^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * IPv6 Address [auto]configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Linux INET6 implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Pedro Roque <roque@di.fc.ul.pt>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Janos Farkas : delete timer on ifdown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * <chexum@bankinf.banki.hu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Andi Kleen : kill double kfree on module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * unload.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Maciej W. Rozycki : FDDI support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * sekiya@USAGI : Don't send too many RS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * yoshfuji@USAGI : Fixed interval between DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * YOSHIFUJI Hideaki @USAGI : improved accuracy of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * address validation timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * YOSHIFUJI Hideaki @USAGI : Privacy Extensions (RFC3041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Yuji SEKIYA @USAGI : Don't assign a same IPv6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * address on a same interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * YOSHIFUJI Hideaki @USAGI : ARCnet support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * YOSHIFUJI Hideaki @USAGI : convert /proc/net/if_inet6 to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * seq_file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * YOSHIFUJI Hideaki @USAGI : improved source address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * selection; consider scope,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * status etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define pr_fmt(fmt) "IPv6: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/sockios.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/if_addr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/if_arcnet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/if_infiniband.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/inetdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <net/snmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #include <net/6lowpan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #include <net/firewire.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #include <net/protocol.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #include <net/ndisc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #include <net/ip6_route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #include <net/addrconf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #include <net/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #include <net/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #include <net/pkt_sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #include <net/l3mdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #include <linux/if_tunnel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #include <linux/netconf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #include <trace/hooks/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define INFINITY_LIFE_TIME 0xFFFFFFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define IPV6_MAX_STRLEN \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static inline u32 cstamp_delta(unsigned long cstamp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return (cstamp - INITIAL_JIFFIES) * 100UL / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static inline s32 rfc3315_s14_backoff_init(s32 irt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* multiply 'initial retransmission time' by 0.9 .. 1.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u64 tmp = (900000 + prandom_u32() % 200001) * (u64)irt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) do_div(tmp, 1000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return (s32)tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* multiply 'retransmission timeout' by 1.9 .. 2.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) u64 tmp = (1900000 + prandom_u32() % 200001) * (u64)rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) do_div(tmp, 1000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if ((s32)tmp > mrt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* multiply 'maximum retransmission time' by 0.9 .. 1.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) tmp = (900000 + prandom_u32() % 200001) * (u64)mrt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) do_div(tmp, 1000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return (s32)tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static int addrconf_sysctl_register(struct inet6_dev *idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static void addrconf_sysctl_unregister(struct inet6_dev *idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static inline int addrconf_sysctl_register(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static void ipv6_gen_rnd_iid(struct in6_addr *addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int ipv6_generate_eui64(u8 *eui, struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int ipv6_count_addresses(const struct inet6_dev *idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int ipv6_generate_stable_address(struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u8 dad_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) const struct inet6_dev *idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #define IN6_ADDR_HSIZE_SHIFT 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define IN6_ADDR_HSIZE (1 << IN6_ADDR_HSIZE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Configured unicast address hash table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static struct hlist_head inet6_addr_lst[IN6_ADDR_HSIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static DEFINE_SPINLOCK(addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static void addrconf_verify(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static void addrconf_verify_rtnl(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static void addrconf_verify_work(struct work_struct *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static struct workqueue_struct *addrconf_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static DECLARE_DELAYED_WORK(addr_chk_work, addrconf_verify_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void addrconf_join_anycast(struct inet6_ifaddr *ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static void addrconf_leave_anycast(struct inet6_ifaddr *ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static void addrconf_type_change(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned long event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static int addrconf_ifdown(struct net_device *dev, bool unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static struct fib6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) u32 flags, u32 noflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) bool no_gw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static void addrconf_dad_start(struct inet6_ifaddr *ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static void addrconf_dad_work(struct work_struct *w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) bool send_na);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static void addrconf_dad_run(struct inet6_dev *idev, bool restart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static void addrconf_rs_timer(struct timer_list *t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static void inet6_prefix_notify(int event, struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct prefix_info *pinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static struct ipv6_devconf ipv6_devconf __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .forwarding = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .hop_limit = IPV6_DEFAULT_HOPLIMIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .mtu6 = IPV6_MIN_MTU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .accept_ra = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .accept_redirects = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) .autoconf = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) .force_mld_version = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) .mldv1_unsolicited_report_interval = 10 * HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) .mldv2_unsolicited_report_interval = HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) .dad_transmits = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) .rtr_solicits = MAX_RTR_SOLICITATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .rtr_solicit_interval = RTR_SOLICITATION_INTERVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .rtr_solicit_max_interval = RTR_SOLICITATION_MAX_INTERVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .rtr_solicit_delay = MAX_RTR_SOLICITATION_DELAY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .use_tempaddr = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .temp_valid_lft = TEMP_VALID_LIFETIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) .temp_prefered_lft = TEMP_PREFERRED_LIFETIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) .regen_max_retry = REGEN_MAX_RETRY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .max_desync_factor = MAX_DESYNC_FACTOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) .max_addresses = IPV6_MAX_ADDRESSES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) .accept_ra_defrtr = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) .accept_ra_from_local = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) .accept_ra_min_hop_limit= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) .accept_ra_pinfo = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #ifdef CONFIG_IPV6_ROUTER_PREF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .accept_ra_rtr_pref = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .rtr_probe_interval = 60 * HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #ifdef CONFIG_IPV6_ROUTE_INFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) .accept_ra_rt_info_min_plen = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) .accept_ra_rt_info_max_plen = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) .accept_ra_rt_table = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) .proxy_ndp = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) .accept_source_route = 0, /* we do not accept RH0 by default. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) .disable_ipv6 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) .accept_dad = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) .suppress_frag_ndisc = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) .accept_ra_mtu = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) .stable_secret = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) .initialized = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) .use_oif_addrs_only = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) .ignore_routes_with_linkdown = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) .keep_addr_on_down = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) .seg6_enabled = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #ifdef CONFIG_IPV6_SEG6_HMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) .seg6_require_hmac = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .enhanced_dad = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .disable_policy = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .rpl_seg_enabled = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .forwarding = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) .hop_limit = IPV6_DEFAULT_HOPLIMIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) .mtu6 = IPV6_MIN_MTU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .accept_ra = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) .accept_redirects = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .autoconf = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .force_mld_version = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) .mldv1_unsolicited_report_interval = 10 * HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) .mldv2_unsolicited_report_interval = HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) .dad_transmits = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) .rtr_solicits = MAX_RTR_SOLICITATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .rtr_solicit_interval = RTR_SOLICITATION_INTERVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .rtr_solicit_max_interval = RTR_SOLICITATION_MAX_INTERVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .rtr_solicit_delay = MAX_RTR_SOLICITATION_DELAY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .use_tempaddr = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .temp_valid_lft = TEMP_VALID_LIFETIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) .temp_prefered_lft = TEMP_PREFERRED_LIFETIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) .regen_max_retry = REGEN_MAX_RETRY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) .max_desync_factor = MAX_DESYNC_FACTOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) .max_addresses = IPV6_MAX_ADDRESSES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) .accept_ra_defrtr = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .accept_ra_from_local = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) .accept_ra_min_hop_limit= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) .accept_ra_pinfo = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #ifdef CONFIG_IPV6_ROUTER_PREF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) .accept_ra_rtr_pref = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) .rtr_probe_interval = 60 * HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #ifdef CONFIG_IPV6_ROUTE_INFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) .accept_ra_rt_info_min_plen = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) .accept_ra_rt_info_max_plen = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) .accept_ra_rt_table = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .proxy_ndp = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) .accept_source_route = 0, /* we do not accept RH0 by default. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) .disable_ipv6 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .accept_dad = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .suppress_frag_ndisc = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .accept_ra_mtu = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) .stable_secret = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) .initialized = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .use_oif_addrs_only = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) .ignore_routes_with_linkdown = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) .keep_addr_on_down = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) .seg6_enabled = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) #ifdef CONFIG_IPV6_SEG6_HMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .seg6_require_hmac = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) .enhanced_dad = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .disable_policy = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) .rpl_seg_enabled = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /* Check if link is ready: is it up and is a valid qdisc available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static inline bool addrconf_link_ready(const struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return netif_oper_up(dev) && !qdisc_tx_is_noop(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static void addrconf_del_rs_timer(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (del_timer(&idev->rs_timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) __in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static void addrconf_del_dad_work(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (cancel_delayed_work(&ifp->dad_work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) __in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static void addrconf_mod_rs_timer(struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) unsigned long when)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (!timer_pending(&idev->rs_timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) in6_dev_hold(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) mod_timer(&idev->rs_timer, jiffies + when);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static void addrconf_mod_dad_work(struct inet6_ifaddr *ifp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) unsigned long delay)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (mod_delayed_work(addrconf_wq, &ifp->dad_work, delay))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static int snmp6_alloc_dev(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) idev->stats.ipv6 = alloc_percpu(struct ipstats_mib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (!idev->stats.ipv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) goto err_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) for_each_possible_cpu(i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct ipstats_mib *addrconf_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) addrconf_stats = per_cpu_ptr(idev->stats.ipv6, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) u64_stats_init(&addrconf_stats->syncp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) idev->stats.icmpv6dev = kzalloc(sizeof(struct icmpv6_mib_device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (!idev->stats.icmpv6dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) goto err_icmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) idev->stats.icmpv6msgdev = kzalloc(sizeof(struct icmpv6msg_mib_device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (!idev->stats.icmpv6msgdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) goto err_icmpmsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) err_icmpmsg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) kfree(idev->stats.icmpv6dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) err_icmp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) free_percpu(idev->stats.ipv6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) err_ip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct inet6_dev *ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (dev->mtu < IPV6_MIN_MTU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!ndev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) rwlock_init(&ndev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) ndev->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) INIT_LIST_HEAD(&ndev->addr_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) timer_setup(&ndev->rs_timer, addrconf_rs_timer, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (ndev->cnf.stable_secret.initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) ndev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ndev->cnf.mtu6 = dev->mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!ndev->nd_parms) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) kfree(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (ndev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) dev_disable_lro(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) /* We refer to the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) dev_hold(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (snmp6_alloc_dev(ndev) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) netdev_dbg(dev, "%s: cannot allocate memory for statistics\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) neigh_parms_release(&nd_tbl, ndev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) kfree(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (snmp6_register_dev(ndev) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) netdev_dbg(dev, "%s: cannot create /proc/net/dev_snmp6/%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) __func__, dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) goto err_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /* One reference from device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) refcount_set(&ndev->refcnt, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (dev->flags & (IFF_NOARP | IFF_LOOPBACK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) ndev->cnf.accept_dad = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) #if IS_ENABLED(CONFIG_IPV6_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) pr_info("%s: Disabled Multicast RS\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) ndev->cnf.rtr_solicits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) INIT_LIST_HEAD(&ndev->tempaddr_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) ndev->desync_factor = U32_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if ((dev->flags&IFF_LOOPBACK) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) dev->type == ARPHRD_TUNNEL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) dev->type == ARPHRD_TUNNEL6 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) dev->type == ARPHRD_SIT ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) dev->type == ARPHRD_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) ndev->cnf.use_tempaddr = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) ndev->token = in6addr_any;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (netif_running(dev) && addrconf_link_ready(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) ndev->if_flags |= IF_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) ipv6_mc_init_dev(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) ndev->tstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) err = addrconf_sysctl_register(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ipv6_mc_destroy_dev(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) snmp6_unregister_dev(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) goto err_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /* protected by rtnl_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) rcu_assign_pointer(dev->ip6_ptr, ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* Join interface-local all-node multicast group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allnodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) /* Join all-node multicast group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /* Join all-router multicast group if forwarding is set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (ndev->cnf.forwarding && (dev->flags & IFF_MULTICAST))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) err_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) neigh_parms_release(&nd_tbl, ndev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ndev->dead = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) in6_dev_finish_destroy(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static struct inet6_dev *ipv6_find_idev(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (!idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) idev = ipv6_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) return idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (dev->flags&IFF_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ipv6_mc_up(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) return idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) static int inet6_netconf_msgsize_devconf(int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) int size = NLMSG_ALIGN(sizeof(struct netconfmsg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) + nla_total_size(4); /* NETCONFA_IFINDEX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) bool all = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (type == NETCONFA_ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) all = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (all || type == NETCONFA_FORWARDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) size += nla_total_size(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (all || type == NETCONFA_MC_FORWARDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) size += nla_total_size(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (all || type == NETCONFA_PROXY_NEIGH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) size += nla_total_size(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) size += nla_total_size(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) struct ipv6_devconf *devconf, u32 portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) u32 seq, int event, unsigned int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct netconfmsg *ncm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) bool all = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (type == NETCONFA_ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) all = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) ncm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) ncm->ncm_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (!devconf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if ((all || type == NETCONFA_FORWARDING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) nla_put_s32(skb, NETCONFA_FORWARDING, devconf->forwarding) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if ((all || type == NETCONFA_MC_FORWARDING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) nla_put_s32(skb, NETCONFA_MC_FORWARDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) devconf->mc_forwarding) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) if ((all || type == NETCONFA_PROXY_NEIGH) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) nla_put_s32(skb, NETCONFA_PROXY_NEIGH, devconf->proxy_ndp) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if ((all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) nla_put_s32(skb, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) devconf->ignore_routes_with_linkdown) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) void inet6_netconf_notify_devconf(struct net *net, int event, int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) int ifindex, struct ipv6_devconf *devconf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) int err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) skb = nlmsg_new(inet6_netconf_msgsize_devconf(type), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) err = inet6_netconf_fill_devconf(skb, ifindex, devconf, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) event, 0, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) rtnl_notify(skb, net, 0, RTNLGRP_IPV6_NETCONF, NULL, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) rtnl_set_sk_err(net, RTNLGRP_IPV6_NETCONF, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) [NETCONFA_IFINDEX] = { .len = sizeof(int) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) [NETCONFA_FORWARDING] = { .len = sizeof(int) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) [NETCONFA_PROXY_NEIGH] = { .len = sizeof(int) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) [NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN] = { .len = sizeof(int) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) static int inet6_netconf_valid_get_req(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) const struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) struct nlattr **tb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(struct netconfmsg))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) NL_SET_ERR_MSG_MOD(extack, "Invalid header for netconf get request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (!netlink_strict_get_check(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) return nlmsg_parse_deprecated(nlh, sizeof(struct netconfmsg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) tb, NETCONFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) devconf_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct netconfmsg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) tb, NETCONFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) devconf_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) for (i = 0; i <= NETCONFA_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (!tb[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) switch (i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) case NETCONFA_IFINDEX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) NL_SET_ERR_MSG_MOD(extack, "Unsupported attribute in netconf get request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) static int inet6_netconf_get_devconf(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct nlattr *tb[NETCONFA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct inet6_dev *in6_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) struct net_device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) struct ipv6_devconf *devconf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) int ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) err = inet6_netconf_valid_get_req(in_skb, nlh, tb, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if (!tb[NETCONFA_IFINDEX])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) switch (ifindex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) case NETCONFA_IFINDEX_ALL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) devconf = net->ipv6.devconf_all;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) case NETCONFA_IFINDEX_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) devconf = net->ipv6.devconf_dflt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) dev = dev_get_by_index(net, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) in6_dev = in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (!in6_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) devconf = &in6_dev->cnf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) skb = nlmsg_new(inet6_netconf_msgsize_devconf(NETCONFA_ALL), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) err = inet6_netconf_fill_devconf(skb, ifindex, devconf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) NETLINK_CB(in_skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) nlh->nlmsg_seq, RTM_NEWNETCONF, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) NETCONFA_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (in6_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) in6_dev_put(in6_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) static int inet6_netconf_dump_devconf(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) const struct nlmsghdr *nlh = cb->nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) int h, s_h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) int idx, s_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) struct hlist_head *head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) if (cb->strict_check) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) struct netlink_ext_ack *extack = cb->extack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) struct netconfmsg *ncm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ncm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) NL_SET_ERR_MSG_MOD(extack, "Invalid header for netconf dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) if (nlmsg_attrlen(nlh, sizeof(*ncm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) NL_SET_ERR_MSG_MOD(extack, "Invalid data after header in netconf dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) s_h = cb->args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) s_idx = idx = cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) head = &net->dev_index_head[h];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) net->dev_base_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) hlist_for_each_entry_rcu(dev, head, index_hlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (idx < s_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (inet6_netconf_fill_devconf(skb, dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) &idev->cnf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) NETCONFA_ALL) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) nl_dump_check_consistent(cb, nlmsg_hdr(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) cont:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) idx++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) if (h == NETDEV_HASHENTRIES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) net->ipv6.devconf_all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) RTM_NEWNETCONF, NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) NETCONFA_ALL) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) h++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) if (h == NETDEV_HASHENTRIES + 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) net->ipv6.devconf_dflt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) RTM_NEWNETCONF, NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) NETCONFA_ALL) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) h++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) cb->args[0] = h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) cb->args[1] = idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) static void dev_forward_change(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) dev = idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) if (idev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) dev_disable_lro(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (dev->flags & IFF_MULTICAST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) if (idev->cnf.forwarding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) ipv6_dev_mc_inc(dev, &in6addr_sitelocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) ipv6_dev_mc_dec(dev, &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) ipv6_dev_mc_dec(dev, &in6addr_interfacelocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) ipv6_dev_mc_dec(dev, &in6addr_sitelocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) list_for_each_entry(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (ifa->flags&IFA_F_TENTATIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) if (idev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) addrconf_join_anycast(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) addrconf_leave_anycast(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) inet6_netconf_notify_devconf(dev_net(dev), RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) NETCONFA_FORWARDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) dev->ifindex, &idev->cnf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) static void addrconf_forward_change(struct net *net, __s32 newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) int changed = (!idev->cnf.forwarding) ^ (!newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) idev->cnf.forwarding = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) dev_forward_change(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) int old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) net = (struct net *)table->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) old = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) *p = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) if (p == &net->ipv6.devconf_dflt->forwarding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) NETCONFA_FORWARDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) NETCONFA_IFINDEX_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) net->ipv6.devconf_dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (p == &net->ipv6.devconf_all->forwarding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) int old_dflt = net->ipv6.devconf_dflt->forwarding;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) net->ipv6.devconf_dflt->forwarding = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) if ((!newf) ^ (!old_dflt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) NETCONFA_FORWARDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) NETCONFA_IFINDEX_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) net->ipv6.devconf_dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) addrconf_forward_change(net, newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) NETCONFA_FORWARDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) NETCONFA_IFINDEX_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) net->ipv6.devconf_all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) } else if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) dev_forward_change((struct inet6_dev *)table->extra1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) if (newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) rt6_purge_dflt_routers(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) static void addrconf_linkdown_change(struct net *net, __s32 newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int changed = (!idev->cnf.ignore_routes_with_linkdown) ^ (!newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) idev->cnf.ignore_routes_with_linkdown = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) if (changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) inet6_netconf_notify_devconf(dev_net(dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) &idev->cnf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) static int addrconf_fixup_linkdown(struct ctl_table *table, int *p, int newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) int old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) net = (struct net *)table->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) old = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) *p = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) if (p == &net->ipv6.devconf_dflt->ignore_routes_with_linkdown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) inet6_netconf_notify_devconf(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) NETCONFA_IFINDEX_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) net->ipv6.devconf_dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) if (p == &net->ipv6.devconf_all->ignore_routes_with_linkdown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) net->ipv6.devconf_dflt->ignore_routes_with_linkdown = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) addrconf_linkdown_change(net, newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) inet6_netconf_notify_devconf(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) NETCONFA_IFINDEX_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) net->ipv6.devconf_all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) /* Nobody refers to this ifaddr, destroy it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) WARN_ON(!hlist_unhashed(&ifp->addr_lst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) #ifdef NET_REFCNT_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) pr_debug("%s\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) in6_dev_put(ifp->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (cancel_delayed_work(&ifp->dad_work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) pr_notice("delayed DAD work was pending while freeing ifa=%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) if (ifp->state != INET6_IFADDR_STATE_DEAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) pr_warn("Freeing alive inet6 address %p\n", ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) kfree_rcu(ifp, rcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) ipv6_link_dev_addr(struct inet6_dev *idev, struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) struct list_head *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) int ifp_scope = ipv6_addr_src_scope(&ifp->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) * Each device address list is sorted in order of scope -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) * global before linklocal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) list_for_each(p, &idev->addr_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) struct inet6_ifaddr *ifa
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) = list_entry(p, struct inet6_ifaddr, if_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) if (ifp_scope >= ipv6_addr_src_scope(&ifa->addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) list_add_tail_rcu(&ifp->if_list, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) static u32 inet6_addr_hash(const struct net *net, const struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) u32 val = ipv6_addr_hash(addr) ^ net_hash_mix(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) return hash_32(val, IN6_ADDR_HSIZE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) struct net_device *dev, unsigned int hash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) hlist_for_each_entry(ifp, &inet6_addr_lst[hash], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (!net_eq(dev_net(ifp->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (ipv6_addr_equal(&ifp->addr, addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) if (!dev || ifp->idev->dev == dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) static int ipv6_add_addr_hash(struct net_device *dev, struct inet6_ifaddr *ifa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) unsigned int hash = inet6_addr_hash(dev_net(dev), &ifa->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) spin_lock(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) /* Ignore adding duplicate addresses on an interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (ipv6_chk_same_addr(dev_net(dev), &ifa->addr, dev, hash)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) netdev_dbg(dev, "ipv6_add_addr: already assigned\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) spin_unlock(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) /* On success it returns ifp with increased reference count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) static struct inet6_ifaddr *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) ipv6_add_addr(struct inet6_dev *idev, struct ifa6_config *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) bool can_block, struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) gfp_t gfp_flags = can_block ? GFP_KERNEL : GFP_ATOMIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) int addr_type = ipv6_addr_type(cfg->pfx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) struct net *net = dev_net(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) struct inet6_ifaddr *ifa = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) struct fib6_info *f6i = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) if (addr_type == IPV6_ADDR_ANY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) (addr_type & IPV6_ADDR_MULTICAST &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) !(cfg->ifa_flags & IFA_F_MCAUTOJOIN)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) (!(idev->dev->flags & IFF_LOOPBACK) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) !netif_is_l3_master(idev->dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) addr_type & IPV6_ADDR_LOOPBACK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) return ERR_PTR(-EADDRNOTAVAIL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) if (idev->dead) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) err = -ENODEV; /*XXX*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (idev->cnf.disable_ipv6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) err = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) /* validator notifier needs to be blocking;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) * do not call in atomic context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) if (can_block) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) struct in6_validator_info i6vi = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) .i6vi_addr = *cfg->pfx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) .i6vi_dev = idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) .extack = extack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) err = inet6addr_validator_notifier_call_chain(NETDEV_UP, &i6vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) err = notifier_to_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) ifa = kzalloc(sizeof(*ifa), gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) if (!ifa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) f6i = addrconf_f6i_alloc(net, idev, cfg->pfx, false, gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) if (IS_ERR(f6i)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) err = PTR_ERR(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) f6i = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) if (net->ipv6.devconf_all->disable_policy ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) idev->cnf.disable_policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) f6i->dst_nopolicy = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) neigh_parms_data_state_setall(idev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) ifa->addr = *cfg->pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (cfg->peer_pfx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) ifa->peer_addr = *cfg->peer_pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) spin_lock_init(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) INIT_DELAYED_WORK(&ifa->dad_work, addrconf_dad_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) INIT_HLIST_NODE(&ifa->addr_lst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) ifa->scope = cfg->scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) ifa->prefix_len = cfg->plen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) ifa->rt_priority = cfg->rt_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) ifa->flags = cfg->ifa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) /* No need to add the TENTATIVE flag for addresses with NODAD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) if (!(cfg->ifa_flags & IFA_F_NODAD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) ifa->flags |= IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) ifa->valid_lft = cfg->valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) ifa->prefered_lft = cfg->preferred_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) ifa->cstamp = ifa->tstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) ifa->tokenized = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) ifa->rt = f6i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) ifa->idev = idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) in6_dev_hold(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) /* For caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) refcount_set(&ifa->refcnt, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) rcu_read_lock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) err = ipv6_add_addr_hash(idev->dev, ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) rcu_read_unlock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) write_lock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) /* Add to inet6_dev unicast addr list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) ipv6_link_dev_addr(idev, ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) if (ifa->flags&IFA_F_TEMPORARY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) list_add(&ifa->tmp_list, &idev->tempaddr_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) in6_ifa_hold(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) in6_ifa_hold(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) write_unlock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) rcu_read_unlock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) inet6addr_notifier_call_chain(NETDEV_UP, ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) if (unlikely(err < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) fib6_info_release(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) if (ifa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) if (ifa->idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) in6_dev_put(ifa->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) kfree(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) ifa = ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) return ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) enum cleanup_prefix_rt_t {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) CLEANUP_PREFIX_RT_NOP, /* no cleanup action for prefix route */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) CLEANUP_PREFIX_RT_DEL, /* delete the prefix route */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) CLEANUP_PREFIX_RT_EXPIRE, /* update the lifetime of the prefix route */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) * Check, whether the prefix for ifp would still need a prefix route
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) * after deleting ifp. The function returns one of the CLEANUP_PREFIX_RT_*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) * constants.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) * 1) we don't purge prefix if address was not permanent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) * prefix is managed by its own lifetime.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) * 2) we also don't purge, if the address was IFA_F_NOPREFIXROUTE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) * 3) if there are no addresses, delete prefix.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) * 4) if there are still other permanent address(es),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) * corresponding prefix is still permanent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) * 5) if there are still other addresses with IFA_F_NOPREFIXROUTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) * don't purge the prefix, assume user space is managing it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) * 6) otherwise, update prefix lifetime to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) * longest valid lifetime among the corresponding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) * addresses on the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * Note: subsequent RA will update lifetime.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) static enum cleanup_prefix_rt_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) check_cleanup_prefix_route(struct inet6_ifaddr *ifp, unsigned long *expires)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) unsigned long lifetime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) enum cleanup_prefix_rt_t action = CLEANUP_PREFIX_RT_DEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) *expires = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) list_for_each_entry(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) if (ifa == ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) if (ifa->prefix_len != ifp->prefix_len ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) !ipv6_prefix_equal(&ifa->addr, &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) ifp->prefix_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) if (ifa->flags & (IFA_F_PERMANENT | IFA_F_NOPREFIXROUTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) return CLEANUP_PREFIX_RT_NOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) action = CLEANUP_PREFIX_RT_EXPIRE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) spin_lock(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) lifetime = addrconf_timeout_fixup(ifa->valid_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) * Note: Because this address is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) * not permanent, lifetime <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) * LONG_MAX / HZ here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) if (time_before(*expires, ifa->tstamp + lifetime * HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) *expires = ifa->tstamp + lifetime * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) spin_unlock(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) cleanup_prefix_route(struct inet6_ifaddr *ifp, unsigned long expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) bool del_rt, bool del_peer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) struct fib6_info *f6i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) f6i = addrconf_get_prefix_route(del_peer ? &ifp->peer_addr : &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) ifp->idev->dev, 0, RTF_DEFAULT, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) if (f6i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) if (del_rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) ip6_del_rt(dev_net(ifp->idev->dev), f6i, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) if (!(f6i->fib6_flags & RTF_EXPIRES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) fib6_set_expires(f6i, expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) fib6_info_release(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) /* This function wants to get referenced ifp and releases it before return */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) static void ipv6_del_addr(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) enum cleanup_prefix_rt_t action = CLEANUP_PREFIX_RT_NOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) unsigned long expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) state = ifp->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) ifp->state = INET6_IFADDR_STATE_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) if (state == INET6_IFADDR_STATE_DEAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) spin_lock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) hlist_del_init_rcu(&ifp->addr_lst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) spin_unlock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) write_lock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) if (ifp->flags&IFA_F_TEMPORARY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) list_del(&ifp->tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (ifp->ifpub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) in6_ifa_put(ifp->ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) ifp->ifpub = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) __in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) if (ifp->flags & IFA_F_PERMANENT && !(ifp->flags & IFA_F_NOPREFIXROUTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) action = check_cleanup_prefix_route(ifp, &expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) list_del_rcu(&ifp->if_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) __in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) write_unlock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) addrconf_del_dad_work(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) ipv6_ifa_notify(RTM_DELADDR, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) inet6addr_notifier_call_chain(NETDEV_DOWN, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) if (action != CLEANUP_PREFIX_RT_NOP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) cleanup_prefix_route(ifp, expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) action == CLEANUP_PREFIX_RT_DEL, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) /* clean up prefsrc entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) rt6_remove_prefsrc(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp, bool block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) unsigned long tmp_tstamp, age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) unsigned long regen_advance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) unsigned long now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) s32 cnf_temp_preferred_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) struct inet6_ifaddr *ift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) struct ifa6_config cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) long max_desync_factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) in6_dev_hold(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) if (idev->cnf.use_tempaddr <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) pr_info("%s: use_tempaddr is disabled\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) if (ifp->regen_count++ >= idev->cnf.regen_max_retry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) idev->cnf.use_tempaddr = -1; /*XXX*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) pr_warn("%s: regeneration time exceeded - disabled temporary address support\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) memcpy(addr.s6_addr, ifp->addr.s6_addr, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) ipv6_gen_rnd_iid(&addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) age = (now - ifp->tstamp) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) regen_advance = idev->cnf.regen_max_retry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) idev->cnf.dad_transmits *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) max(NEIGH_VAR(idev->nd_parms, RETRANS_TIME), HZ/100) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) /* recalculate max_desync_factor each time and update
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) * idev->desync_factor if it's larger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) cnf_temp_preferred_lft = READ_ONCE(idev->cnf.temp_prefered_lft);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) max_desync_factor = min_t(__u32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) idev->cnf.max_desync_factor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) cnf_temp_preferred_lft - regen_advance);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if (unlikely(idev->desync_factor > max_desync_factor)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) if (max_desync_factor > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) get_random_bytes(&idev->desync_factor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) sizeof(idev->desync_factor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) idev->desync_factor %= max_desync_factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) idev->desync_factor = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) memset(&cfg, 0, sizeof(cfg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) cfg.valid_lft = min_t(__u32, ifp->valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) idev->cnf.temp_valid_lft + age);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) cfg.preferred_lft = cnf_temp_preferred_lft + age - idev->desync_factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) cfg.preferred_lft = min_t(__u32, ifp->prefered_lft, cfg.preferred_lft);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) cfg.plen = ifp->prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) tmp_tstamp = ifp->tstamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) /* A temporary address is created only if this calculated Preferred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) * Lifetime is greater than REGEN_ADVANCE time units. In particular,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) * an implementation must not create a temporary address with a zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) * Preferred Lifetime.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) * Use age calculation as in addrconf_verify to avoid unnecessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) * temporary addresses being generated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) age = (now - tmp_tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) if (cfg.preferred_lft <= regen_advance + age) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) cfg.ifa_flags = IFA_F_TEMPORARY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) /* set in addrconf_prefix_rcv() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) if (ifp->flags & IFA_F_OPTIMISTIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) cfg.ifa_flags |= IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) cfg.pfx = &addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) cfg.scope = ipv6_addr_scope(cfg.pfx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) ift = ipv6_add_addr(idev, &cfg, block, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) if (IS_ERR(ift)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) pr_info("%s: retry temporary address regeneration\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) spin_lock_bh(&ift->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) ift->ifpub = ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) ift->cstamp = now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) ift->tstamp = tmp_tstamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) spin_unlock_bh(&ift->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) addrconf_dad_start(ift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) in6_ifa_put(ift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) * Choose an appropriate source address (RFC3484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) IPV6_SADDR_RULE_INIT = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) IPV6_SADDR_RULE_LOCAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) IPV6_SADDR_RULE_SCOPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) IPV6_SADDR_RULE_PREFERRED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) #ifdef CONFIG_IPV6_MIP6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) IPV6_SADDR_RULE_HOA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) IPV6_SADDR_RULE_OIF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) IPV6_SADDR_RULE_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) IPV6_SADDR_RULE_PRIVACY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) IPV6_SADDR_RULE_ORCHID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) IPV6_SADDR_RULE_PREFIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) IPV6_SADDR_RULE_NOT_OPTIMISTIC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) IPV6_SADDR_RULE_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) struct ipv6_saddr_score {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) int rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) int addr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) DECLARE_BITMAP(scorebits, IPV6_SADDR_RULE_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) int scopedist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) int matchlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) struct ipv6_saddr_dst {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) const struct in6_addr *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) int ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) int scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) int label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) unsigned int prefs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) static inline int ipv6_saddr_preferred(int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) if (type & (IPV6_ADDR_MAPPED|IPV6_ADDR_COMPATv4|IPV6_ADDR_LOOPBACK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) static bool ipv6_use_optimistic_addr(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) if (!net->ipv6.devconf_all->optimistic_dad && !idev->cnf.optimistic_dad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) if (!net->ipv6.devconf_all->use_optimistic && !idev->cnf.use_optimistic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) static bool ipv6_allow_optimistic_dad(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) if (!net->ipv6.devconf_all->optimistic_dad && !idev->cnf.optimistic_dad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) static int ipv6_get_saddr_eval(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) struct ipv6_saddr_score *score,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) struct ipv6_saddr_dst *dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) int i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) if (i <= score->rule) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) switch (i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) case IPV6_SADDR_RULE_SCOPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) ret = score->scopedist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) case IPV6_SADDR_RULE_PREFIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) ret = score->matchlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) ret = !!test_bit(i, score->scorebits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) switch (i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) case IPV6_SADDR_RULE_INIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) /* Rule 0: remember if hiscore is not ready yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) ret = !!score->ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) case IPV6_SADDR_RULE_LOCAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) /* Rule 1: Prefer same address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) ret = ipv6_addr_equal(&score->ifa->addr, dst->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) case IPV6_SADDR_RULE_SCOPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) /* Rule 2: Prefer appropriate scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) * ret
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) * ^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) * -1 | d 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) * ---+--+-+---> scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) * |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) * | d is scope of the destination.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) * B-d | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) * | \ <- smaller scope is better if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) * B-15 | \ if scope is enough for destination.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) * | ret = B - scope (-1 <= scope >= d <= 15).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) * d-C-1 | /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) * |/ <- greater is better
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) * -C / if scope is not enough for destination.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) * /| ret = scope - C (-1 <= d < scope <= 15).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) * d - C - 1 < B -15 (for all -1 <= d <= 15).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) * C > d + 14 - B >= 15 + 14 - B = 29 - B.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) * Assume B = 0 and we get C > 29.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) ret = __ipv6_addr_src_scope(score->addr_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) if (ret >= dst->scope)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) ret = -ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) ret -= 128; /* 30 is enough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) score->scopedist = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) case IPV6_SADDR_RULE_PREFERRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) /* Rule 3: Avoid deprecated and optimistic addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) u8 avoid = IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) if (!ipv6_use_optimistic_addr(net, score->ifa->idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) avoid |= IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) ret = ipv6_saddr_preferred(score->addr_type) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) !(score->ifa->flags & avoid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) #ifdef CONFIG_IPV6_MIP6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) case IPV6_SADDR_RULE_HOA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) /* Rule 4: Prefer home address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) int prefhome = !(dst->prefs & IPV6_PREFER_SRC_COA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) ret = !(score->ifa->flags & IFA_F_HOMEADDRESS) ^ prefhome;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) case IPV6_SADDR_RULE_OIF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) /* Rule 5: Prefer outgoing interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) ret = (!dst->ifindex ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) dst->ifindex == score->ifa->idev->dev->ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) case IPV6_SADDR_RULE_LABEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) /* Rule 6: Prefer matching label */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) ret = ipv6_addr_label(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) &score->ifa->addr, score->addr_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) score->ifa->idev->dev->ifindex) == dst->label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) case IPV6_SADDR_RULE_PRIVACY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) /* Rule 7: Prefer public address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) * Note: prefer temporary address if use_tempaddr >= 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) int preftmp = dst->prefs & (IPV6_PREFER_SRC_PUBLIC|IPV6_PREFER_SRC_TMP) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) !!(dst->prefs & IPV6_PREFER_SRC_TMP) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) score->ifa->idev->cnf.use_tempaddr >= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) ret = (!(score->ifa->flags & IFA_F_TEMPORARY)) ^ preftmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) case IPV6_SADDR_RULE_ORCHID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) /* Rule 8-: Prefer ORCHID vs ORCHID or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) * non-ORCHID vs non-ORCHID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) ret = !(ipv6_addr_orchid(&score->ifa->addr) ^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) ipv6_addr_orchid(dst->addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) case IPV6_SADDR_RULE_PREFIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) /* Rule 8: Use longest matching prefix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) ret = ipv6_addr_diff(&score->ifa->addr, dst->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) if (ret > score->ifa->prefix_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) ret = score->ifa->prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) score->matchlen = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) case IPV6_SADDR_RULE_NOT_OPTIMISTIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) /* Optimistic addresses still have lower precedence than other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) * preferred addresses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) ret = !(score->ifa->flags & IFA_F_OPTIMISTIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) __set_bit(i, score->scorebits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) score->rule = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) static int __ipv6_dev_get_saddr(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) struct ipv6_saddr_dst *dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) struct ipv6_saddr_score *scores,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) int hiscore_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) struct ipv6_saddr_score *score = &scores[1 - hiscore_idx], *hiscore = &scores[hiscore_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) list_for_each_entry_rcu(score->ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) * - Tentative Address (RFC2462 section 5.4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) * - A tentative address is not considered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) * "assigned to an interface" in the traditional
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) * sense, unless it is also flagged as optimistic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) * - Candidate Source Address (section 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) * - In any case, anycast addresses, multicast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) * addresses, and the unspecified address MUST
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) * NOT be included in a candidate set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) if ((score->ifa->flags & IFA_F_TENTATIVE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) (!(score->ifa->flags & IFA_F_OPTIMISTIC)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) score->addr_type = __ipv6_addr_type(&score->ifa->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) if (unlikely(score->addr_type == IPV6_ADDR_ANY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) score->addr_type & IPV6_ADDR_MULTICAST)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) net_dbg_ratelimited("ADDRCONF: unspecified / multicast address assigned as unicast address on %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) score->rule = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) bitmap_zero(score->scorebits, IPV6_SADDR_RULE_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) for (i = 0; i < IPV6_SADDR_RULE_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) int minihiscore, miniscore;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) minihiscore = ipv6_get_saddr_eval(net, hiscore, dst, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) miniscore = ipv6_get_saddr_eval(net, score, dst, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) if (minihiscore > miniscore) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) if (i == IPV6_SADDR_RULE_SCOPE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) score->scopedist > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * special case:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) * each remaining entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) * has too small (not enough)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) * scope, because ifa entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) * are sorted by their scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) * values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) } else if (minihiscore < miniscore) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) swap(hiscore, score);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) hiscore_idx = 1 - hiscore_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) /* restore our iterator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) score->ifa = hiscore->ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) return hiscore_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) static int ipv6_get_saddr_master(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) const struct net_device *dst_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) const struct net_device *master,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) struct ipv6_saddr_dst *dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) struct ipv6_saddr_score *scores,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) int hiscore_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) idev = __in6_dev_get(dst_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) if (idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) scores, hiscore_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) idev = __in6_dev_get(master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) if (idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) scores, hiscore_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) return hiscore_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) const struct in6_addr *daddr, unsigned int prefs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) struct in6_addr *saddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) struct ipv6_saddr_score scores[2], *hiscore;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) struct ipv6_saddr_dst dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) int dst_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) bool use_oif_addr = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) int hiscore_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) dst_type = __ipv6_addr_type(daddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) dst.addr = daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) dst.ifindex = dst_dev ? dst_dev->ifindex : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) dst.scope = __ipv6_addr_src_scope(dst_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) dst.label = ipv6_addr_label(net, daddr, dst_type, dst.ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) dst.prefs = prefs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) scores[hiscore_idx].rule = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) scores[hiscore_idx].ifa = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) /* Candidate Source Address (section 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) * - multicast and link-local destination address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) * the set of candidate source address MUST only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) * include addresses assigned to interfaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) * belonging to the same link as the outgoing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) * interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) * (- For site-local destination addresses, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) * set of candidate source addresses MUST only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) * include addresses assigned to interfaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) * belonging to the same site as the outgoing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) * interface.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) * - "It is RECOMMENDED that the candidate source addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) * be the set of unicast addresses assigned to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) * interface that will be used to send to the destination
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) * (the 'outgoing' interface)." (RFC 6724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) if (dst_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) idev = __in6_dev_get(dst_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) if ((dst_type & IPV6_ADDR_MULTICAST) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) dst.scope <= IPV6_ADDR_SCOPE_LINKLOCAL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) (idev && idev->cnf.use_oif_addrs_only)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) use_oif_addr = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) if (use_oif_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) if (idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) const struct net_device *master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) int master_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) /* if dst_dev exists and is enslaved to an L3 device, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) * prefer addresses from dst_dev and then the master over
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) * any other enslaved devices in the L3 domain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) master = l3mdev_master_dev_rcu(dst_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) if (master) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) master_idx = master->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) hiscore_idx = ipv6_get_saddr_master(net, dst_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) master, &dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) scores, hiscore_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) if (scores[hiscore_idx].ifa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) for_each_netdev_rcu(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) /* only consider addresses on devices in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) * same L3 domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) if (l3mdev_master_ifindex_rcu(dev) != master_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) hiscore = &scores[hiscore_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) if (!hiscore->ifa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) ret = -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) *saddr = hiscore->ifa->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) EXPORT_SYMBOL(ipv6_dev_get_saddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) u32 banned_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) int err = -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) list_for_each_entry_reverse(ifp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) if (ifp->scope > IFA_LINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) if (ifp->scope == IFA_LINK &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) !(ifp->flags & banned_flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) *addr = ifp->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) u32 banned_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) int err = -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) err = __ipv6_get_lladdr(idev, addr, banned_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) static int ipv6_count_addresses(const struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) const struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) int cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) list_for_each_entry_rcu(ifp, &idev->addr_list, if_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) return cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) int ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) const struct net_device *dev, int strict)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) return ipv6_chk_addr_and_flags(net, addr, dev, !dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) strict, IFA_F_TENTATIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) EXPORT_SYMBOL(ipv6_chk_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) /* device argument is used to find the L3 domain of interest. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) * skip_dev_check is set, then the ifp device is not checked against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) * the passed in dev argument. So the 2 cases for addresses checks are:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) * 1. does the address exist in the L3 domain that dev is part of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) * (skip_dev_check = true), or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) * 2. does the address exist on the specific device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) * (skip_dev_check = false)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) static struct net_device *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) __ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) const struct net_device *dev, bool skip_dev_check,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) int strict, u32 banned_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) unsigned int hash = inet6_addr_hash(net, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) struct net_device *l3mdev, *ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) u32 ifp_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) l3mdev = l3mdev_master_dev_rcu(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) if (skip_dev_check)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) ndev = ifp->idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) if (!net_eq(dev_net(ndev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) if (l3mdev_master_dev_rcu(ndev) != l3mdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) /* Decouple optimistic from tentative for evaluation here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) * Ban optimistic addresses explicitly, when required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) ifp_flags = (ifp->flags&IFA_F_OPTIMISTIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) ? (ifp->flags&~IFA_F_TENTATIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) : ifp->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) if (ipv6_addr_equal(&ifp->addr, addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) !(ifp_flags&banned_flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) (!dev || ndev == dev ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) return ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) const struct net_device *dev, bool skip_dev_check,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) int strict, u32 banned_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) return __ipv6_chk_addr_and_flags(net, addr, dev, skip_dev_check,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) strict, banned_flags) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) EXPORT_SYMBOL(ipv6_chk_addr_and_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) /* Compares an address/prefix_len with addresses on device @dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) * If one is found it returns true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) bool ipv6_chk_custom_prefix(const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) const unsigned int prefix_len, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) const struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) const struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) bool ret = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) list_for_each_entry_rcu(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) ret = ipv6_prefix_equal(addr, &ifa->addr, prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) EXPORT_SYMBOL(ipv6_chk_custom_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) const struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) const struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) int onlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) onlink = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) list_for_each_entry_rcu(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) onlink = ipv6_prefix_equal(addr, &ifa->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) ifa->prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) if (onlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) return onlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) EXPORT_SYMBOL(ipv6_chk_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) * ipv6_dev_find - find the first device with a given source address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) * @net: the net namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) * @addr: the source address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) * The caller should be protected by RCU, or RTNL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) struct net_device *ipv6_dev_find(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) return __ipv6_chk_addr_and_flags(net, addr, dev, !dev, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) IFA_F_TENTATIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) EXPORT_SYMBOL(ipv6_dev_find);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) struct net_device *dev, int strict)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) unsigned int hash = inet6_addr_hash(net, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) struct inet6_ifaddr *ifp, *result = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) if (!net_eq(dev_net(ifp->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) if (ipv6_addr_equal(&ifp->addr, addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) if (!dev || ifp->idev->dev == dev ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) !(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) result = ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) /* Gets referenced address, destroys ifaddr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) if (dad_failed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) ifp->flags |= IFA_F_DADFAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) if (ifp->flags&IFA_F_TEMPORARY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) struct inet6_ifaddr *ifpub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) ifpub = ifp->ifpub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) if (ifpub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) in6_ifa_hold(ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) ipv6_create_tempaddr(ifpub, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) in6_ifa_put(ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) ipv6_del_addr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) } else if (ifp->flags&IFA_F_PERMANENT || !dad_failed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) addrconf_del_dad_work(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) ifp->flags |= IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) if (dad_failed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) ifp->flags &= ~IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) if (dad_failed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) ipv6_ifa_notify(0, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) ipv6_del_addr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) static int addrconf_dad_end(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) int err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) if (ifp->state == INET6_IFADDR_STATE_DAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) ifp->state = INET6_IFADDR_STATE_POSTDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) struct net *net = dev_net(ifp->idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) if (addrconf_dad_end(ifp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) net_info_ratelimited("%s: IPv6 duplicate address %pI6c used by %pM detected!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) ifp->idev->dev->name, &ifp->addr, eth_hdr(skb)->h_source);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) if (ifp->flags & IFA_F_STABLE_PRIVACY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) struct in6_addr new_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) struct inet6_ifaddr *ifp2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) int retries = ifp->stable_privacy_retry + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) struct ifa6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) .pfx = &new_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) .plen = ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) .ifa_flags = ifp->flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) .valid_lft = ifp->valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) .preferred_lft = ifp->prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) .scope = ifp->scope,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) if (retries > net->ipv6.sysctl.idgen_retries) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) net_info_ratelimited("%s: privacy stable address generation failed because of DAD conflicts!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) ifp->idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) goto errdad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) new_addr = ifp->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) if (ipv6_generate_stable_address(&new_addr, retries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) goto errdad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) if (idev->cnf.max_addresses &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) ipv6_count_addresses(idev) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) idev->cnf.max_addresses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) goto lock_errdad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) net_info_ratelimited("%s: generating new stable privacy address because of DAD conflict\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) ifp->idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) ifp2 = ipv6_add_addr(idev, &cfg, false, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) if (IS_ERR(ifp2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) goto lock_errdad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) spin_lock_bh(&ifp2->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) ifp2->stable_privacy_retry = retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) ifp2->state = INET6_IFADDR_STATE_PREDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) spin_unlock_bh(&ifp2->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) addrconf_mod_dad_work(ifp2, net->ipv6.sysctl.idgen_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) in6_ifa_put(ifp2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) lock_errdad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) errdad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) /* transition from _POSTDAD to _ERRDAD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) ifp->state = INET6_IFADDR_STATE_ERRDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) addrconf_mod_dad_work(ifp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) /* Join to solicited addr multicast group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) * caller must hold RTNL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) struct in6_addr maddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) if (dev->flags&(IFF_LOOPBACK|IFF_NOARP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) addrconf_addr_solict_mult(addr, &maddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) ipv6_dev_mc_inc(dev, &maddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) /* caller must hold RTNL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) struct in6_addr maddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) if (idev->dev->flags&(IFF_LOOPBACK|IFF_NOARP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) addrconf_addr_solict_mult(addr, &maddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) __ipv6_dev_mc_dec(idev, &maddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) /* caller must hold RTNL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) if (ifp->prefix_len >= 127) /* RFC 6164 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) if (ipv6_addr_any(&addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) __ipv6_dev_ac_inc(ifp->idev, &addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) /* caller must hold RTNL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) if (ifp->prefix_len >= 127) /* RFC 6164 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) if (ipv6_addr_any(&addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) __ipv6_dev_ac_dec(ifp->idev, &addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) static int addrconf_ifid_6lowpan(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) switch (dev->addr_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) case ETH_ALEN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) memcpy(eui, dev->dev_addr, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) eui[3] = 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) eui[4] = 0xFE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) memcpy(eui + 5, dev->dev_addr + 3, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) case EUI64_ADDR_LEN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) eui[0] ^= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) static int addrconf_ifid_ieee1394(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) union fwnet_hwaddr *ha;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) if (dev->addr_len != FWNET_ALEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) ha = (union fwnet_hwaddr *)dev->dev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) memcpy(eui, &ha->uc.uniq_id, sizeof(ha->uc.uniq_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) eui[0] ^= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) static int addrconf_ifid_arcnet(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) /* XXX: inherit EUI-64 from other interface -- yoshfuji */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) if (dev->addr_len != ARCNET_ALEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) memset(eui, 0, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) eui[7] = *(u8 *)dev->dev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) static int addrconf_ifid_infiniband(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) if (dev->addr_len != INFINIBAND_ALEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) memcpy(eui, dev->dev_addr + 12, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) eui[0] |= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) static int __ipv6_isatap_ifid(u8 *eui, __be32 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) if (addr == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) ipv4_is_lbcast(addr)) ? 0x00 : 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) eui[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) eui[2] = 0x5E;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) eui[3] = 0xFE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) memcpy(eui + 4, &addr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) static int addrconf_ifid_sit(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) if (dev->priv_flags & IFF_ISATAP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) static int addrconf_ifid_gre(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) static int addrconf_ifid_ip6tnl(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) memcpy(eui, dev->perm_addr, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) memcpy(eui + 5, dev->perm_addr + 3, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) eui[3] = 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) eui[4] = 0xFE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) eui[0] ^= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) switch (dev->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) case ARPHRD_ETHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) case ARPHRD_FDDI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) return addrconf_ifid_eui48(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) case ARPHRD_ARCNET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) return addrconf_ifid_arcnet(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) case ARPHRD_INFINIBAND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) return addrconf_ifid_infiniband(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) case ARPHRD_SIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) return addrconf_ifid_sit(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) case ARPHRD_IPGRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) case ARPHRD_TUNNEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) return addrconf_ifid_gre(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) case ARPHRD_6LOWPAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) return addrconf_ifid_6lowpan(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) case ARPHRD_IEEE1394:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) return addrconf_ifid_ieee1394(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) case ARPHRD_TUNNEL6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) case ARPHRD_IP6GRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) case ARPHRD_RAWIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) return addrconf_ifid_ip6tnl(eui, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) int err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) list_for_each_entry_reverse(ifp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) if (ifp->scope > IFA_LINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) memcpy(eui, ifp->addr.s6_addr+8, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) /* Generation of a randomized Interface Identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) * draft-ietf-6man-rfc4941bis, Section 3.3.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) static void ipv6_gen_rnd_iid(struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) regen:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) get_random_bytes(&addr->s6_addr[8], 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) /* <draft-ietf-6man-rfc4941bis-08.txt>, Section 3.3.1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) * check if generated address is not inappropriate:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) * - Reserved IPv6 Interface Identifers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) * - XXX: already assigned to an address on the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) /* Subnet-router anycast: 0000:0000:0000:0000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) if (!(addr->s6_addr32[2] | addr->s6_addr32[3]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) goto regen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) /* IANA Ethernet block: 0200:5EFF:FE00:0000-0200:5EFF:FE00:5212
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) * Proxy Mobile IPv6: 0200:5EFF:FE00:5213
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) * IANA Ethernet block: 0200:5EFF:FE00:5214-0200:5EFF:FEFF:FFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) if (ntohl(addr->s6_addr32[2]) == 0x02005eff &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) (ntohl(addr->s6_addr32[3]) & 0Xff000000) == 0xfe000000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) goto regen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) /* Reserved subnet anycast addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) if (ntohl(addr->s6_addr32[2]) == 0xfdffffff &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) ntohl(addr->s6_addr32[3]) >= 0Xffffff80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) goto regen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) u32 addrconf_rt_table(const struct net_device *dev, u32 default_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) struct inet6_dev *idev = in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) int sysctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) u32 table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) return default_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) sysctl = idev->cnf.accept_ra_rt_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) if (sysctl == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) table = default_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) } else if (sysctl > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) table = (u32) sysctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) table = (unsigned) dev->ifindex + (-sysctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) return table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) * Add prefix route.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) addrconf_prefix_route(struct in6_addr *pfx, int plen, u32 metric,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) struct net_device *dev, unsigned long expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) u32 flags, gfp_t gfp_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) struct fib6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) .fc_table = l3mdev_fib_table(dev) ? : addrconf_rt_table(dev, RT6_TABLE_PREFIX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) .fc_metric = metric ? : IP6_RT_PRIO_ADDRCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) .fc_ifindex = dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) .fc_expires = expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) .fc_dst_len = plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) .fc_flags = RTF_UP | flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) .fc_nlinfo.nl_net = dev_net(dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) .fc_protocol = RTPROT_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) .fc_type = RTN_UNICAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) cfg.fc_dst = *pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) /* Prevent useless cloning on PtP SIT.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) This thing is done here expecting that the whole
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) class of non-broadcast devices need not cloning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) #if IS_ENABLED(CONFIG_IPV6_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) cfg.fc_flags |= RTF_NONEXTHOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) ip6_route_add(&cfg, gfp_flags, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) static struct fib6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) int plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) u32 flags, u32 noflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) bool no_gw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) struct fib6_node *fn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) struct fib6_info *rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) struct fib6_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) u32 tb_id = l3mdev_fib_table(dev) ? : addrconf_rt_table(dev, RT6_TABLE_PREFIX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) table = fib6_get_table(dev_net(dev), tb_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) if (!table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) fn = fib6_locate(&table->tb6_root, pfx, plen, NULL, 0, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) if (!fn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) for_each_fib6_node_rt_rcu(fn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) /* prefix routes only use builtin fib6_nh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) if (rt->nh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) if (rt->fib6_nh->fib_nh_dev->ifindex != dev->ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) if (no_gw && rt->fib6_nh->fib_nh_gw_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) if ((rt->fib6_flags & flags) != flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) if ((rt->fib6_flags & noflags) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) if (!fib6_info_hold_safe(rt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) return rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) /* Create "default" multicast route to the interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) static void addrconf_add_mroute(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) struct fib6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) .fc_table = l3mdev_fib_table(dev) ? : RT6_TABLE_LOCAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) .fc_metric = IP6_RT_PRIO_ADDRCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) .fc_ifindex = dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) .fc_dst_len = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) .fc_flags = RTF_UP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) .fc_type = RTN_MULTICAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) .fc_nlinfo.nl_net = dev_net(dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) .fc_protocol = RTPROT_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) ip6_route_add(&cfg, GFP_KERNEL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) idev = ipv6_find_idev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) return idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) if (idev->cnf.disable_ipv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) return ERR_PTR(-EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) /* Add default multicast route */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) if (!(dev->flags & IFF_LOOPBACK) && !netif_is_l3_master(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) addrconf_add_mroute(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) return idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) static void manage_tempaddrs(struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) struct inet6_ifaddr *ifp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) __u32 valid_lft, __u32 prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) bool create, unsigned long now)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) struct inet6_ifaddr *ift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) /* update all temporary addresses in the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) list_for_each_entry(ift, &idev->tempaddr_list, tmp_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) int age, max_valid, max_prefered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) if (ifp != ift->ifpub)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) /* RFC 4941 section 3.3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) * If a received option will extend the lifetime of a public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) * address, the lifetimes of temporary addresses should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) * be extended, subject to the overall constraint that no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) * temporary addresses should ever remain "valid" or "preferred"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) * for a time longer than (TEMP_VALID_LIFETIME) or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) * (TEMP_PREFERRED_LIFETIME - DESYNC_FACTOR), respectively.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) age = (now - ift->cstamp) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) max_valid = idev->cnf.temp_valid_lft - age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) if (max_valid < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) max_valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) max_prefered = idev->cnf.temp_prefered_lft -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) idev->desync_factor - age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) if (max_prefered < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) max_prefered = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) if (valid_lft > max_valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) valid_lft = max_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) if (prefered_lft > max_prefered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) prefered_lft = max_prefered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) spin_lock(&ift->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) flags = ift->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) ift->valid_lft = valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) ift->prefered_lft = prefered_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) ift->tstamp = now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) if (prefered_lft > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) ift->flags &= ~IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) spin_unlock(&ift->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) if (!(flags&IFA_F_TENTATIVE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) ipv6_ifa_notify(0, ift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) if ((create || list_empty(&idev->tempaddr_list)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) idev->cnf.use_tempaddr > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) /* When a new public address is created as described
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) * in [ADDRCONF], also create a new temporary address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) * Also create a temporary address if it's enabled but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) * no temporary address currently exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) ipv6_create_tempaddr(ifp, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) static bool is_addr_mode_generate_stable(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) return idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_STABLE_PRIVACY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_RANDOM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) const struct prefix_info *pinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) struct inet6_dev *in6_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) const struct in6_addr *addr, int addr_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) u32 addr_flags, bool sllao, bool tokenized,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) __u32 valid_lft, u32 prefered_lft)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) struct inet6_ifaddr *ifp = ipv6_get_ifaddr(net, addr, dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) int create = 0, update_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) if (!ifp && valid_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) int max_addresses = in6_dev->cnf.max_addresses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) struct ifa6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) .pfx = addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) .plen = pinfo->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) .ifa_flags = addr_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) .valid_lft = valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) .preferred_lft = prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) .scope = addr_type & IPV6_ADDR_SCOPE_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) if ((net->ipv6.devconf_all->optimistic_dad ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) in6_dev->cnf.optimistic_dad) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) !net->ipv6.devconf_all->forwarding && sllao)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) cfg.ifa_flags |= IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) /* Do not allow to create too much of autoconfigured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) * addresses; this would be too easy way to crash kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) if (!max_addresses ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) ipv6_count_addresses(in6_dev) < max_addresses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) ifp = ipv6_add_addr(in6_dev, &cfg, false, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) if (IS_ERR_OR_NULL(ifp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) create = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) ifp->flags |= IFA_F_MANAGETEMPADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) ifp->cstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) ifp->tokenized = tokenized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) addrconf_dad_start(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) if (ifp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) unsigned long now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) u32 stored_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) /* update lifetime (RFC2462 5.5.3 e) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) if (ifp->valid_lft > (now - ifp->tstamp) / HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) stored_lft = ifp->valid_lft - (now - ifp->tstamp) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) stored_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) if (!create && stored_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) const u32 minimum_lft = min_t(u32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) stored_lft, MIN_VALID_LIFETIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) valid_lft = max(valid_lft, minimum_lft);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) /* RFC4862 Section 5.5.3e:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) * "Note that the preferred lifetime of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) * corresponding address is always reset to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) * the Preferred Lifetime in the received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) * Prefix Information option, regardless of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) * whether the valid lifetime is also reset or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) * ignored."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) * So we should always update prefered_lft here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) update_lft = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) if (update_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) ifp->valid_lft = valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) ifp->prefered_lft = prefered_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) ifp->tstamp = now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) flags = ifp->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) ifp->flags &= ~IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) if (!(flags&IFA_F_TENTATIVE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) ipv6_ifa_notify(0, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) manage_tempaddrs(in6_dev, ifp, valid_lft, prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) create, now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) addrconf_verify();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) EXPORT_SYMBOL_GPL(addrconf_prefix_rcv_add_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) struct prefix_info *pinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) __u32 valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) __u32 prefered_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) int addr_type, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) u32 addr_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704) struct inet6_dev *in6_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) struct net *net = dev_net(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) pinfo = (struct prefix_info *) opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709) if (len < sizeof(struct prefix_info)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) netdev_dbg(dev, "addrconf: prefix option too short\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) * Validation checks ([ADDRCONF], page 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) addr_type = ipv6_addr_type(&pinfo->prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) if (addr_type & (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) valid_lft = ntohl(pinfo->valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) prefered_lft = ntohl(pinfo->prefered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) if (prefered_lft > valid_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) net_warn_ratelimited("addrconf: prefix option has invalid lifetime\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) in6_dev = in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) if (!in6_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) net_dbg_ratelimited("addrconf: device %s not configured\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) * Two things going on here:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) * 1) Add routes for on-link prefixes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) * 2) Configure prefixes with the auto flag set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) if (pinfo->onlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) struct fib6_info *rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747) unsigned long rt_expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) /* Avoid arithmetic overflow. Really, we could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750) * save rt_expires in seconds, likely valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) * but it would require division in fib gc, that it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) * not good.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) if (HZ > USER_HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) rt_expires = addrconf_timeout_fixup(valid_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) rt_expires = addrconf_timeout_fixup(valid_lft, USER_HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) if (addrconf_finite_timeout(rt_expires))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760) rt_expires *= HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) rt = addrconf_get_prefix_route(&pinfo->prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) pinfo->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) RTF_ADDRCONF | RTF_PREFIX_RT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) RTF_DEFAULT, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) if (rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) /* Autoconf prefix route */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770) if (valid_lft == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) ip6_del_rt(net, rt, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) } else if (addrconf_finite_timeout(rt_expires)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) /* not infinity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) fib6_set_expires(rt, jiffies + rt_expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) fib6_clean_expires(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779) } else if (valid_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) clock_t expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) int flags = RTF_ADDRCONF | RTF_PREFIX_RT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782) if (addrconf_finite_timeout(rt_expires)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) /* not infinity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) flags |= RTF_EXPIRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) expires = jiffies_to_clock_t(rt_expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) 0, dev, expires, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) fib6_info_release(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794) /* Try to figure out our local address for this prefix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) if (pinfo->autoconf && in6_dev->cnf.autoconf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) bool tokenized = false, dev_addr_generated = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) if (pinfo->prefix_len == 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) memcpy(&addr, &pinfo->prefix, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) if (!ipv6_addr_any(&in6_dev->token)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) read_lock_bh(&in6_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) memcpy(addr.s6_addr + 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) in6_dev->token.s6_addr + 8, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) read_unlock_bh(&in6_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) tokenized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) } else if (is_addr_mode_generate_stable(in6_dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810) !ipv6_generate_stable_address(&addr, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) in6_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) addr_flags |= IFA_F_STABLE_PRIVACY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) goto ok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) } else if (ipv6_generate_eui64(addr.s6_addr + 8, dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) ipv6_inherit_eui64(addr.s6_addr + 8, in6_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) dev_addr_generated = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820) goto ok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) net_dbg_ratelimited("IPv6 addrconf: prefix with wrong length %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) pinfo->prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) ok:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827) err = addrconf_prefix_rcv_add_addr(net, dev, pinfo, in6_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) &addr, addr_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) addr_flags, sllao,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830) tokenized, valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) prefered_lft);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) /* Ignore error case here because previous prefix add addr was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) * successful which will be notified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) ndisc_ops_prefix_rcv_add_addr(net, dev, pinfo, in6_dev, &addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) addr_type, addr_flags, sllao,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) tokenized, valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) dev_addr_generated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) inet6_prefix_notify(RTM_NEWPREFIX, in6_dev, pinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845) put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) in6_dev_put(in6_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849) static int addrconf_set_sit_dstaddr(struct net *net, struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) struct in6_ifreq *ireq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) struct ip_tunnel_parm p = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) if (!(ipv6_addr_type(&ireq->ifr6_addr) & IPV6_ADDR_COMPATv4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) p.iph.daddr = ireq->ifr6_addr.s6_addr32[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) p.iph.version = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) p.iph.ihl = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) p.iph.protocol = IPPROTO_IPV6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) p.iph.ttl = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) if (!dev->netdev_ops->ndo_tunnel_ctl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) err = dev->netdev_ops->ndo_tunnel_ctl(dev, &p, SIOCADDTUNNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) dev = __dev_get_by_name(net, p.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) return -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) return dev_open(dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877) * Set destination address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) * Special case for SIT interfaces where we create a new "virtual"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) * device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) int addrconf_set_dstaddr(struct net *net, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) struct in6_ifreq ireq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885) int err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) if (!IS_ENABLED(CONFIG_IPV6_SIT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) dev = __dev_get_by_index(net, ireq.ifr6_ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) if (dev && dev->type == ARPHRD_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) err = addrconf_set_sit_dstaddr(net, dev, &ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) static int ipv6_mc_config(struct sock *sk, bool join,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) const struct in6_addr *addr, int ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) if (join)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) ret = ipv6_sock_mc_join(sk, ifindex, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) ret = ipv6_sock_mc_drop(sk, ifindex, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) * Manual configuration of address on an interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) static int inet6_addr_add(struct net *net, int ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) struct ifa6_config *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928) clock_t expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) if (cfg->plen > 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936) /* check the lifetime */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) if (!cfg->valid_lft || cfg->preferred_lft > cfg->valid_lft)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940) if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR && cfg->plen != 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) dev = __dev_get_by_index(net, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) idev = addrconf_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) return PTR_ERR(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951) if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952) int ret = ipv6_mc_config(net->ipv6.mc_autojoin_sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953) true, cfg->pfx, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) cfg->scope = ipv6_addr_scope(cfg->pfx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) timeout = addrconf_timeout_fixup(cfg->valid_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) if (addrconf_finite_timeout(timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) expires = jiffies_to_clock_t(timeout * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) cfg->valid_lft = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965) flags = RTF_EXPIRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) cfg->ifa_flags |= IFA_F_PERMANENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) timeout = addrconf_timeout_fixup(cfg->preferred_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) if (addrconf_finite_timeout(timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974) if (timeout == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) cfg->ifa_flags |= IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) cfg->preferred_lft = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) ifp = ipv6_add_addr(idev, cfg, true, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980) if (!IS_ERR(ifp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) if (!(cfg->ifa_flags & IFA_F_NOPREFIXROUTE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983) ifp->rt_priority, dev, expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) flags, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) /* Send a netlink notification if DAD is enabled and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) * optimistic flag is not set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) if (!(ifp->flags & (IFA_F_OPTIMISTIC | IFA_F_NODAD)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) ipv6_ifa_notify(0, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) * Note that section 3.1 of RFC 4429 indicates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) * that the Optimistic flag should not be set for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995) * manually configured addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) addrconf_dad_start(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) manage_tempaddrs(idev, ifp, cfg->valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000) cfg->preferred_lft, true, jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) } else if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) ipv6_mc_config(net->ipv6.mc_autojoin_sk, false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006) cfg->pfx, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) return PTR_ERR(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012) static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) const struct in6_addr *pfx, unsigned int plen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) if (plen > 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022) dev = __dev_get_by_index(net, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) list_for_each_entry(ifp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) if (ifp->prefix_len == plen &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) ipv6_addr_equal(pfx, &ifp->addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) if (!(ifp->flags & IFA_F_TEMPORARY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) (ifa_flags & IFA_F_MANAGETEMPADDR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) manage_tempaddrs(idev, ifp, 0, 0, false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) ipv6_del_addr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) if (ipv6_addr_is_multicast(pfx)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) ipv6_mc_config(net->ipv6.mc_autojoin_sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045) false, pfx, dev->ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) int addrconf_add_ifaddr(struct net *net, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) struct ifa6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) .ifa_flags = IFA_F_PERMANENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) .preferred_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060) .valid_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) struct in6_ifreq ireq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068) if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) cfg.pfx = &ireq.ifr6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) cfg.plen = ireq.ifr6_prefixlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) err = inet6_addr_add(net, ireq.ifr6_ifindex, &cfg, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080) int addrconf_del_ifaddr(struct net *net, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) struct in6_ifreq ireq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092) err = inet6_addr_del(net, ireq.ifr6_ifindex, 0, &ireq.ifr6_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) ireq.ifr6_prefixlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) static void add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) int plen, int scope)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) struct ifa6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103) .pfx = addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) .plen = plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105) .ifa_flags = IFA_F_PERMANENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) .valid_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) .preferred_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) .scope = scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) ifp = ipv6_add_addr(idev, &cfg, true, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) if (!IS_ERR(ifp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) ifp->flags &= ~IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) rt_genid_bump_ipv6(dev_net(idev->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) ipv6_ifa_notify(RTM_NEWADDR, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) #if IS_ENABLED(CONFIG_IPV6_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) static void sit_add_v4_addrs(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) struct net *net = dev_net(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128) int scope, plen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) u32 pflags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) memset(&addr, 0, sizeof(struct in6_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136) if (idev->dev->flags&IFF_POINTOPOINT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) if (idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140) addr.s6_addr32[0] = htonl(0xfe800000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) scope = IFA_LINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) plen = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) scope = IPV6_ADDR_COMPATv4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) plen = 96;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) pflags |= RTF_NONEXTHOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) if (addr.s6_addr32[3]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) add_addr(idev, &addr, plen, scope);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) addrconf_prefix_route(&addr, plen, 0, idev->dev, 0, pflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) struct in_device *in_dev = __in_dev_get_rtnl(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158) if (in_dev && (dev->flags & IFF_UP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159) struct in_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) int flag = scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162) in_dev_for_each_ifa_rtnl(ifa, in_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) addr.s6_addr32[3] = ifa->ifa_local;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) if (ifa->ifa_scope == RT_SCOPE_LINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167) if (ifa->ifa_scope >= RT_SCOPE_HOST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168) if (idev->dev->flags&IFF_POINTOPOINT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) flag |= IFA_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173) add_addr(idev, &addr, plen, flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) addrconf_prefix_route(&addr, plen, 0, idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175) 0, pflags, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) static void init_loopback(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186) /* ::1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) idev = ipv6_find_idev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191) if (IS_ERR(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) pr_debug("%s: add_dev failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196) add_addr(idev, &in6addr_loopback, 128, IFA_HOST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) void addrconf_add_linklocal(struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200) const struct in6_addr *addr, u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202) struct ifa6_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) .pfx = addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) .plen = 64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) .ifa_flags = flags | IFA_F_PERMANENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) .valid_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207) .preferred_lft = INFINITY_LIFE_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) .scope = IFA_LINK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213) if ((dev_net(idev->dev)->ipv6.devconf_all->optimistic_dad ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214) idev->cnf.optimistic_dad) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) !dev_net(idev->dev)->ipv6.devconf_all->forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) cfg.ifa_flags |= IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) ifp = ipv6_add_addr(idev, &cfg, true, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220) if (!IS_ERR(ifp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221) addrconf_prefix_route(&ifp->addr, ifp->prefix_len, 0, idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222) 0, 0, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) addrconf_dad_start(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227) EXPORT_SYMBOL_GPL(addrconf_add_linklocal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229) static bool ipv6_reserved_interfaceid(struct in6_addr address)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) if ((address.s6_addr32[2] | address.s6_addr32[3]) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) if (address.s6_addr32[2] == htonl(0x02005eff) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235) ((address.s6_addr32[3] & htonl(0xfe000000)) == htonl(0xfe000000)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238) if (address.s6_addr32[2] == htonl(0xfdffffff) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) ((address.s6_addr32[3] & htonl(0xffffff80)) == htonl(0xffffff80)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) static int ipv6_generate_stable_address(struct in6_addr *address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246) u8 dad_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247) const struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249) static DEFINE_SPINLOCK(lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) static __u32 digest[SHA1_DIGEST_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251) static __u32 workspace[SHA1_WORKSPACE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253) static union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) char __data[SHA1_BLOCK_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256) struct in6_addr secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257) __be32 prefix[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258) unsigned char hwaddr[MAX_ADDR_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259) u8 dad_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261) } data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3263) struct in6_addr secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3264) struct in6_addr temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3265) struct net *net = dev_net(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3267) BUILD_BUG_ON(sizeof(data.__data) != sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3269) if (idev->cnf.stable_secret.initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3270) secret = idev->cnf.stable_secret.secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3271) else if (net->ipv6.devconf_dflt->stable_secret.initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3272) secret = net->ipv6.devconf_dflt->stable_secret.secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3273) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3274) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3276) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3277) spin_lock_bh(&lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3279) sha1_init(digest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3280) memset(&data, 0, sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3281) memset(workspace, 0, sizeof(workspace));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3282) memcpy(data.hwaddr, idev->dev->perm_addr, idev->dev->addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3283) data.prefix[0] = address->s6_addr32[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3284) data.prefix[1] = address->s6_addr32[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3285) data.secret = secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3286) data.dad_count = dad_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3288) sha1_transform(digest, data.__data, workspace);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3290) temp = *address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3291) temp.s6_addr32[2] = (__force __be32)digest[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3292) temp.s6_addr32[3] = (__force __be32)digest[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3294) spin_unlock_bh(&lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3296) if (ipv6_reserved_interfaceid(temp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3297) dad_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3298) if (dad_count > dev_net(idev->dev)->ipv6.sysctl.idgen_retries)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3299) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3300) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3303) *address = temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3304) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3307) static void ipv6_gen_mode_random_init(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3309) struct ipv6_stable_secret *s = &idev->cnf.stable_secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3311) if (s->initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3312) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3313) s = &idev->cnf.stable_secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3314) get_random_bytes(&s->secret, sizeof(s->secret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3315) s->initialized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3318) static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3320) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3322) /* no link local addresses on L3 master devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3323) if (netif_is_l3_master(idev->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3324) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3326) /* no link local addresses on devices flagged as slaves */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3327) if (idev->dev->flags & IFF_SLAVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3328) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3330) ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3332) switch (idev->cnf.addr_gen_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3333) case IN6_ADDR_GEN_MODE_RANDOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3334) ipv6_gen_mode_random_init(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3335) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3336) case IN6_ADDR_GEN_MODE_STABLE_PRIVACY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3337) if (!ipv6_generate_stable_address(&addr, 0, idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3338) addrconf_add_linklocal(idev, &addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3339) IFA_F_STABLE_PRIVACY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3340) else if (prefix_route)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3341) addrconf_prefix_route(&addr, 64, 0, idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3342) 0, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3343) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3344) case IN6_ADDR_GEN_MODE_EUI64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3345) /* addrconf_add_linklocal also adds a prefix_route and we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3346) * only need to care about prefix routes if ipv6_generate_eui64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3347) * couldn't generate one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3348) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3349) if (ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3350) addrconf_add_linklocal(idev, &addr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3351) else if (prefix_route)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3352) addrconf_prefix_route(&addr, 64, 0, idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3353) 0, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3354) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3355) case IN6_ADDR_GEN_MODE_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3356) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3357) /* will not add any link local address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3358) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3362) static void addrconf_dev_config(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3364) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3365) bool ret = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3367) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3369) if ((dev->type != ARPHRD_ETHER) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3370) (dev->type != ARPHRD_FDDI) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3371) (dev->type != ARPHRD_ARCNET) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3372) (dev->type != ARPHRD_INFINIBAND) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3373) (dev->type != ARPHRD_IEEE1394) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3374) (dev->type != ARPHRD_TUNNEL6) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3375) (dev->type != ARPHRD_6LOWPAN) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3376) (dev->type != ARPHRD_IP6GRE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3377) (dev->type != ARPHRD_IPGRE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3378) (dev->type != ARPHRD_TUNNEL) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3379) (dev->type != ARPHRD_NONE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3380) (dev->type != ARPHRD_RAWIP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3381) /* Alas, we support only Ethernet autoconfiguration. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3382) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3383) if (!IS_ERR_OR_NULL(idev) && dev->flags & IFF_UP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3384) dev->flags & IFF_MULTICAST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3385) ipv6_mc_up(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3386) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3389) idev = addrconf_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3390) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3391) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3393) trace_android_vh_ipv6_gen_linklocal_addr(dev, &ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3394) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3395) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3397) /* this device type has no EUI support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3398) if (dev->type == ARPHRD_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3399) idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3400) idev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_RANDOM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3402) addrconf_addr_gen(idev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3405) #if IS_ENABLED(CONFIG_IPV6_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3406) static void addrconf_sit_config(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3408) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3410) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3412) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3413) * Configure the tunnel with one of our IPv4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3414) * addresses... we should configure all of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3415) * our v4 addrs in the tunnel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3416) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3418) idev = ipv6_find_idev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3419) if (IS_ERR(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3420) pr_debug("%s: add_dev failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3421) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3424) if (dev->priv_flags & IFF_ISATAP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3425) addrconf_addr_gen(idev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3426) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3429) sit_add_v4_addrs(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3431) if (dev->flags&IFF_POINTOPOINT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3432) addrconf_add_mroute(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3434) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3436) #if IS_ENABLED(CONFIG_NET_IPGRE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3437) static void addrconf_gre_config(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3438) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3439) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3441) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3443) idev = ipv6_find_idev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3444) if (IS_ERR(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3445) pr_debug("%s: add_dev failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3446) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3449) addrconf_addr_gen(idev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3450) if (dev->flags & IFF_POINTOPOINT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3451) addrconf_add_mroute(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3453) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3455) static int fixup_permanent_addr(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3456) struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3457) struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3459) /* !fib6_node means the host route was removed from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3460) * FIB, for example, if 'lo' device is taken down. In that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3461) * case regenerate the host route.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3462) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3463) if (!ifp->rt || !ifp->rt->fib6_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3464) struct fib6_info *f6i, *prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3466) f6i = addrconf_f6i_alloc(net, idev, &ifp->addr, false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3467) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3468) if (IS_ERR(f6i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3469) return PTR_ERR(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3471) /* ifp->rt can be accessed outside of rtnl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3472) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3473) prev = ifp->rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3474) ifp->rt = f6i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3475) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3477) fib6_info_release(prev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3480) if (!(ifp->flags & IFA_F_NOPREFIXROUTE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3481) addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3482) ifp->rt_priority, idev->dev, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3483) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3486) if (ifp->state == INET6_IFADDR_STATE_PREDAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3487) addrconf_dad_start(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3489) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3492) static void addrconf_permanent_addr(struct net *net, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3493) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3494) struct inet6_ifaddr *ifp, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3495) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3497) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3498) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3499) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3501) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3503) list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3504) if ((ifp->flags & IFA_F_PERMANENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3505) fixup_permanent_addr(net, idev, ifp) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3506) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3507) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3508) ipv6_del_addr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3509) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3511) net_info_ratelimited("%s: Failed to add prefix route for address %pI6c; dropping\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3512) idev->dev->name, &ifp->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3516) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3519) static int addrconf_notify(struct notifier_block *this, unsigned long event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3520) void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3522) struct net_device *dev = netdev_notifier_info_to_dev(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3523) struct netdev_notifier_change_info *change_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3524) struct netdev_notifier_changeupper_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3525) struct inet6_dev *idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3526) struct net *net = dev_net(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3527) int run_pending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3528) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3530) switch (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3531) case NETDEV_REGISTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3532) if (!idev && dev->mtu >= IPV6_MIN_MTU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3533) idev = ipv6_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3534) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3535) return notifier_from_errno(PTR_ERR(idev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3537) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3539) case NETDEV_CHANGEMTU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3540) /* if MTU under IPV6_MIN_MTU stop IPv6 on this interface. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3541) if (dev->mtu < IPV6_MIN_MTU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3542) addrconf_ifdown(dev, dev != net->loopback_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3543) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3546) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3547) rt6_mtu_change(dev, dev->mtu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3548) idev->cnf.mtu6 = dev->mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3549) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3552) /* allocate new idev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3553) idev = ipv6_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3554) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3555) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3557) /* device is still not ready */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3558) if (!(idev->if_flags & IF_READY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3559) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3561) run_pending = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3562) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3563) case NETDEV_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3564) case NETDEV_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3565) if (dev->flags & IFF_SLAVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3566) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3568) if (idev && idev->cnf.disable_ipv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3569) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3571) if (event == NETDEV_UP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3572) /* restore routes for permanent addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3573) addrconf_permanent_addr(net, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3575) if (!addrconf_link_ready(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3576) /* device is not ready yet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3577) pr_debug("ADDRCONF(NETDEV_UP): %s: link is not ready\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3578) dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3579) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3582) if (!idev && dev->mtu >= IPV6_MIN_MTU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3583) idev = ipv6_add_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3585) if (!IS_ERR_OR_NULL(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3586) idev->if_flags |= IF_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3587) run_pending = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3589) } else if (event == NETDEV_CHANGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3590) if (!addrconf_link_ready(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3591) /* device is still not ready. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3592) rt6_sync_down_dev(dev, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3593) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3596) if (!IS_ERR_OR_NULL(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3597) if (idev->if_flags & IF_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3598) /* device is already configured -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3599) * but resend MLD reports, we might
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3600) * have roamed and need to update
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3601) * multicast snooping switches
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3602) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3603) ipv6_mc_up(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3604) change_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3605) if (change_info->flags_changed & IFF_NOARP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3606) addrconf_dad_run(idev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3607) rt6_sync_up(dev, RTNH_F_LINKDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3608) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3610) idev->if_flags |= IF_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3613) pr_info("ADDRCONF(NETDEV_CHANGE): %s: link becomes ready\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3614) dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3616) run_pending = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3619) switch (dev->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3620) #if IS_ENABLED(CONFIG_IPV6_SIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3621) case ARPHRD_SIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3622) addrconf_sit_config(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3623) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3624) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3625) #if IS_ENABLED(CONFIG_NET_IPGRE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3626) case ARPHRD_IPGRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3627) addrconf_gre_config(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3628) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3629) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3630) case ARPHRD_LOOPBACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3631) init_loopback(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3632) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3634) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3635) addrconf_dev_config(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3636) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3639) if (!IS_ERR_OR_NULL(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3640) if (run_pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3641) addrconf_dad_run(idev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3643) /* Device has an address by now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3644) rt6_sync_up(dev, RTNH_F_DEAD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3646) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3647) * If the MTU changed during the interface down,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3648) * when the interface up, the changed MTU must be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3649) * reflected in the idev as well as routers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3650) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3651) if (idev->cnf.mtu6 != dev->mtu &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3652) dev->mtu >= IPV6_MIN_MTU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3653) rt6_mtu_change(dev, dev->mtu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3654) idev->cnf.mtu6 = dev->mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3656) idev->tstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3657) inet6_ifinfo_notify(RTM_NEWLINK, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3659) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3660) * If the changed mtu during down is lower than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3661) * IPV6_MIN_MTU stop IPv6 on this interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3662) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3663) if (dev->mtu < IPV6_MIN_MTU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3664) addrconf_ifdown(dev, dev != net->loopback_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3666) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3668) case NETDEV_DOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3669) case NETDEV_UNREGISTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3670) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3671) * Remove all addresses from this interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3672) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3673) addrconf_ifdown(dev, event != NETDEV_DOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3674) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3676) case NETDEV_CHANGENAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3677) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3678) snmp6_unregister_dev(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3679) addrconf_sysctl_unregister(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3680) err = addrconf_sysctl_register(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3681) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3682) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3683) err = snmp6_register_dev(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3684) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3685) addrconf_sysctl_unregister(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3686) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3688) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3689) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3691) case NETDEV_PRE_TYPE_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3692) case NETDEV_POST_TYPE_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3693) if (idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3694) addrconf_type_change(dev, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3695) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3697) case NETDEV_CHANGEUPPER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3698) info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3700) /* flush all routes if dev is linked to or unlinked from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3701) * an L3 master device (e.g., VRF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3702) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3703) if (info->upper_dev && netif_is_l3_master(info->upper_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3704) addrconf_ifdown(dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3707) return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3710) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3711) * addrconf module should be notified of a device going up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3712) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3713) static struct notifier_block ipv6_dev_notf = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3714) .notifier_call = addrconf_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3715) .priority = ADDRCONF_NOTIFY_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3716) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3718) static void addrconf_type_change(struct net_device *dev, unsigned long event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3719) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3720) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3721) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3723) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3725) if (event == NETDEV_POST_TYPE_CHANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3726) ipv6_mc_remap(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3727) else if (event == NETDEV_PRE_TYPE_CHANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3728) ipv6_mc_unmap(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3731) static bool addr_is_local(const struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3732) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3733) return ipv6_addr_type(addr) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3734) (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3737) static int addrconf_ifdown(struct net_device *dev, bool unregister)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3738) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3739) unsigned long event = unregister ? NETDEV_UNREGISTER : NETDEV_DOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3740) struct net *net = dev_net(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3741) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3742) struct inet6_ifaddr *ifa, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3743) bool keep_addr = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3744) bool was_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3745) int state, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3747) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3749) rt6_disable_ip(dev, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3751) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3752) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3753) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3755) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3756) * Step 1: remove reference to ipv6 device from parent device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3757) * Do not dev_put!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3758) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3759) if (unregister) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3760) idev->dead = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3762) /* protected by rtnl_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3763) RCU_INIT_POINTER(dev->ip6_ptr, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3765) /* Step 1.5: remove snmp6 entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3766) snmp6_unregister_dev(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3770) /* combine the user config with event to determine if permanent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3771) * addresses are to be removed from address hash table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3772) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3773) if (!unregister && !idev->cnf.disable_ipv6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3774) /* aggregate the system setting and interface setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3775) int _keep_addr = net->ipv6.devconf_all->keep_addr_on_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3777) if (!_keep_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3778) _keep_addr = idev->cnf.keep_addr_on_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3780) keep_addr = (_keep_addr > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3783) /* Step 2: clear hash table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3784) for (i = 0; i < IN6_ADDR_HSIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3785) struct hlist_head *h = &inet6_addr_lst[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3787) spin_lock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3788) restart:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3789) hlist_for_each_entry_rcu(ifa, h, addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3790) if (ifa->idev == idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3791) addrconf_del_dad_work(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3792) /* combined flag + permanent flag decide if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3793) * address is retained on a down event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3794) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3795) if (!keep_addr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3796) !(ifa->flags & IFA_F_PERMANENT) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3797) addr_is_local(&ifa->addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3798) hlist_del_init_rcu(&ifa->addr_lst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3799) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3802) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3803) spin_unlock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3806) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3808) addrconf_del_rs_timer(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3810) /* Step 2: clear flags for stateless addrconf, repeated down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3811) * detection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3812) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3813) was_ready = idev->if_flags & IF_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3814) if (!unregister)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3815) idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3817) /* Step 3: clear tempaddr list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3818) while (!list_empty(&idev->tempaddr_list)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3819) ifa = list_first_entry(&idev->tempaddr_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3820) struct inet6_ifaddr, tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3821) list_del(&ifa->tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3822) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3823) spin_lock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3825) if (ifa->ifpub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3826) in6_ifa_put(ifa->ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3827) ifa->ifpub = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3829) spin_unlock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3830) in6_ifa_put(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3831) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3834) list_for_each_entry_safe(ifa, tmp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3835) struct fib6_info *rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3836) bool keep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3838) addrconf_del_dad_work(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3840) keep = keep_addr && (ifa->flags & IFA_F_PERMANENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3841) !addr_is_local(&ifa->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3843) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3844) spin_lock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3846) if (keep) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3847) /* set state to skip the notifier below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3848) state = INET6_IFADDR_STATE_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3849) ifa->state = INET6_IFADDR_STATE_PREDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3850) if (!(ifa->flags & IFA_F_NODAD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3851) ifa->flags |= IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3853) rt = ifa->rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3854) ifa->rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3855) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3856) state = ifa->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3857) ifa->state = INET6_IFADDR_STATE_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3860) spin_unlock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3862) if (rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3863) ip6_del_rt(net, rt, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3865) if (state != INET6_IFADDR_STATE_DEAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3866) __ipv6_ifa_notify(RTM_DELADDR, ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3867) inet6addr_notifier_call_chain(NETDEV_DOWN, ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3868) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3869) if (idev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3870) addrconf_leave_anycast(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3871) addrconf_leave_solict(ifa->idev, &ifa->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3874) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3875) if (!keep) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3876) list_del_rcu(&ifa->if_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3877) in6_ifa_put(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3881) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3883) /* Step 5: Discard anycast and multicast list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3884) if (unregister) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3885) ipv6_ac_destroy_dev(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3886) ipv6_mc_destroy_dev(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3887) } else if (was_ready) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3888) ipv6_mc_down(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3891) idev->tstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3893) /* Last: Shot the device (if unregistered) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3894) if (unregister) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3895) addrconf_sysctl_unregister(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3896) neigh_parms_release(&nd_tbl, idev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3897) neigh_ifdown(&nd_tbl, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3898) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3899) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3900) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3903) static void addrconf_rs_timer(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3904) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3905) struct inet6_dev *idev = from_timer(idev, t, rs_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3906) struct net_device *dev = idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3907) struct in6_addr lladdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3909) write_lock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3910) if (idev->dead || !(idev->if_flags & IF_READY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3911) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3913) if (!ipv6_accept_ra(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3914) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3916) /* Announcement received after solicitation was sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3917) if (idev->if_flags & IF_RA_RCVD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3918) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3920) if (idev->rs_probes++ < idev->cnf.rtr_solicits || idev->cnf.rtr_solicits < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3921) write_unlock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3922) if (!ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3923) ndisc_send_rs(dev, &lladdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3924) &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3925) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3926) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3928) write_lock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3929) idev->rs_interval = rfc3315_s14_backoff_update(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3930) idev->rs_interval, idev->cnf.rtr_solicit_max_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3931) /* The wait after the last probe can be shorter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3932) addrconf_mod_rs_timer(idev, (idev->rs_probes ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3933) idev->cnf.rtr_solicits) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3934) idev->cnf.rtr_solicit_delay :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3935) idev->rs_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3936) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3937) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3938) * Note: we do not support deprecated "all on-link"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3939) * assumption any longer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3940) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3941) pr_debug("%s: no IPv6 routers present\n", idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3944) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3945) write_unlock(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3946) put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3947) in6_dev_put(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3950) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3951) * Duplicate Address Detection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3952) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3953) static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3955) unsigned long rand_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3956) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3957) u64 nonce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3959) if (ifp->flags & IFA_F_OPTIMISTIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3960) rand_num = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3961) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3962) rand_num = prandom_u32() % (idev->cnf.rtr_solicit_delay ? : 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3964) nonce = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3965) if (idev->cnf.enhanced_dad ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3966) dev_net(idev->dev)->ipv6.devconf_all->enhanced_dad) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3967) do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3968) get_random_bytes(&nonce, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3969) while (nonce == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3971) ifp->dad_nonce = nonce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3972) ifp->dad_probes = idev->cnf.dad_transmits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3973) addrconf_mod_dad_work(ifp, rand_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3974) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3976) static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3977) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3978) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3979) struct net_device *dev = idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3980) bool bump_id, notify = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3981) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3983) addrconf_join_solict(dev, &ifp->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3985) prandom_seed((__force u32) ifp->addr.s6_addr32[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3987) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3988) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3989) if (ifp->state == INET6_IFADDR_STATE_DEAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3990) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3992) net = dev_net(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3993) if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3994) (net->ipv6.devconf_all->accept_dad < 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3995) idev->cnf.accept_dad < 1) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3996) !(ifp->flags&IFA_F_TENTATIVE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3997) ifp->flags & IFA_F_NODAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3998) bool send_na = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4000) if (ifp->flags & IFA_F_TENTATIVE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4001) !(ifp->flags & IFA_F_OPTIMISTIC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4002) send_na = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4003) bump_id = ifp->flags & IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4004) ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4005) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4006) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4008) addrconf_dad_completed(ifp, bump_id, send_na);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4009) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4010) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4012) if (!(idev->if_flags & IF_READY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4013) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4014) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4015) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4016) * If the device is not ready:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4017) * - keep it tentative if it is a permanent address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4018) * - otherwise, kill it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4020) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4021) addrconf_dad_stop(ifp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4022) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4025) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4026) * Optimistic nodes can start receiving
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4027) * Frames right away
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4028) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4029) if (ifp->flags & IFA_F_OPTIMISTIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4030) ip6_ins_rt(net, ifp->rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4031) if (ipv6_use_optimistic_addr(net, idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4032) /* Because optimistic nodes can use this address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4033) * notify listeners. If DAD fails, RTM_DELADDR is sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4034) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4035) notify = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4037) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4039) addrconf_dad_kick(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4040) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4041) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4042) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4043) if (notify)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4044) ipv6_ifa_notify(RTM_NEWADDR, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4047) static void addrconf_dad_start(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4048) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4049) bool begin_dad = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4051) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4052) if (ifp->state != INET6_IFADDR_STATE_DEAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4053) ifp->state = INET6_IFADDR_STATE_PREDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4054) begin_dad = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4055) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4056) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4058) if (begin_dad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4059) addrconf_mod_dad_work(ifp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4060) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4062) static void addrconf_dad_work(struct work_struct *w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4063) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4064) struct inet6_ifaddr *ifp = container_of(to_delayed_work(w),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4065) struct inet6_ifaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4066) dad_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4067) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4068) bool bump_id, disable_ipv6 = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4069) struct in6_addr mcaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4071) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4072) DAD_PROCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4073) DAD_BEGIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4074) DAD_ABORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4075) } action = DAD_PROCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4077) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4079) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4080) if (ifp->state == INET6_IFADDR_STATE_PREDAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4081) action = DAD_BEGIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4082) ifp->state = INET6_IFADDR_STATE_DAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4083) } else if (ifp->state == INET6_IFADDR_STATE_ERRDAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4084) action = DAD_ABORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4085) ifp->state = INET6_IFADDR_STATE_POSTDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4087) if ((dev_net(idev->dev)->ipv6.devconf_all->accept_dad > 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4088) idev->cnf.accept_dad > 1) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4089) !idev->cnf.disable_ipv6 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4090) !(ifp->flags & IFA_F_STABLE_PRIVACY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4091) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4093) addr.s6_addr32[0] = htonl(0xfe800000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4094) addr.s6_addr32[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4096) if (!ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4097) ipv6_addr_equal(&ifp->addr, &addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4098) /* DAD failed for link-local based on MAC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4099) idev->cnf.disable_ipv6 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4101) pr_info("%s: IPv6 being disabled!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4102) ifp->idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4103) disable_ipv6 = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4107) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4109) if (action == DAD_BEGIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4110) addrconf_dad_begin(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4111) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4112) } else if (action == DAD_ABORT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4113) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4114) addrconf_dad_stop(ifp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4115) if (disable_ipv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4116) addrconf_ifdown(idev->dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4117) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4120) if (!ifp->dad_probes && addrconf_dad_end(ifp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4121) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4123) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4124) if (idev->dead || !(idev->if_flags & IF_READY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4125) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4126) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4129) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4130) if (ifp->state == INET6_IFADDR_STATE_DEAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4131) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4132) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4133) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4136) if (ifp->dad_probes == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4137) bool send_na = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4140) * DAD was successful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4143) if (ifp->flags & IFA_F_TENTATIVE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4144) !(ifp->flags & IFA_F_OPTIMISTIC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4145) send_na = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4146) bump_id = ifp->flags & IFA_F_TENTATIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4147) ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4148) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4149) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4151) addrconf_dad_completed(ifp, bump_id, send_na);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4153) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4156) ifp->dad_probes--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4157) addrconf_mod_dad_work(ifp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4158) max(NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4159) HZ/100));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4160) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4161) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4163) /* send a neighbour solicitation for our addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4164) addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4165) ndisc_send_ns(ifp->idev->dev, &ifp->addr, &mcaddr, &in6addr_any,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4166) ifp->dad_nonce);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4167) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4168) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4169) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4172) /* ifp->idev must be at least read locked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4173) static bool ipv6_lonely_lladdr(struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4175) struct inet6_ifaddr *ifpiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4176) struct inet6_dev *idev = ifp->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4178) list_for_each_entry_reverse(ifpiter, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4179) if (ifpiter->scope > IFA_LINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4180) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4181) if (ifp != ifpiter && ifpiter->scope == IFA_LINK &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4182) (ifpiter->flags & (IFA_F_PERMANENT|IFA_F_TENTATIVE|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4183) IFA_F_OPTIMISTIC|IFA_F_DADFAILED)) ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4184) IFA_F_PERMANENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4185) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4187) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4190) static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4191) bool send_na)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4193) struct net_device *dev = ifp->idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4194) struct in6_addr lladdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4195) bool send_rs, send_mld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4197) addrconf_del_dad_work(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4200) * Configure the address for reception. Now it is valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4203) ipv6_ifa_notify(RTM_NEWADDR, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4205) /* If added prefix is link local and we are prepared to process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4206) router advertisements, start sending router solicitations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4207) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4209) read_lock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4210) send_mld = ifp->scope == IFA_LINK && ipv6_lonely_lladdr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4211) send_rs = send_mld &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4212) ipv6_accept_ra(ifp->idev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4213) ifp->idev->cnf.rtr_solicits != 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4214) (dev->flags&IFF_LOOPBACK) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4215) read_unlock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4217) /* While dad is in progress mld report's source address is in6_addrany.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4218) * Resend with proper ll now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4219) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4220) if (send_mld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4221) ipv6_mc_dad_complete(ifp->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4223) /* send unsolicited NA if enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4224) if (send_na &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4225) (ifp->idev->cnf.ndisc_notify ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4226) dev_net(dev)->ipv6.devconf_all->ndisc_notify)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4227) ndisc_send_na(dev, &in6addr_linklocal_allnodes, &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4228) /*router=*/ !!ifp->idev->cnf.forwarding,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4229) /*solicited=*/ false, /*override=*/ true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4230) /*inc_opt=*/ true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4233) if (send_rs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4234) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4235) * If a host as already performed a random delay
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4236) * [...] as part of DAD [...] there is no need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4237) * to delay again before sending the first RS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4239) if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4240) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4241) ndisc_send_rs(dev, &lladdr, &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4243) write_lock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4244) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4245) ifp->idev->rs_interval = rfc3315_s14_backoff_init(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4246) ifp->idev->cnf.rtr_solicit_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4247) ifp->idev->rs_probes = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4248) ifp->idev->if_flags |= IF_RS_SENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4249) addrconf_mod_rs_timer(ifp->idev, ifp->idev->rs_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4250) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4251) write_unlock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4254) if (bump_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4255) rt_genid_bump_ipv6(dev_net(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4257) /* Make sure that a new temporary address will be created
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4258) * before this temporary address becomes deprecated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4259) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4260) if (ifp->flags & IFA_F_TEMPORARY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4261) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4264) static void addrconf_dad_run(struct inet6_dev *idev, bool restart)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4266) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4268) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4269) list_for_each_entry(ifp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4270) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4271) if ((ifp->flags & IFA_F_TENTATIVE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4272) ifp->state == INET6_IFADDR_STATE_DAD) || restart) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4273) if (restart)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4274) ifp->state = INET6_IFADDR_STATE_PREDAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4275) addrconf_dad_kick(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4277) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4279) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4282) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4283) struct if6_iter_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4284) struct seq_net_private p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4285) int bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4286) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4287) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4289) static struct inet6_ifaddr *if6_get_first(struct seq_file *seq, loff_t pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4291) struct if6_iter_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4292) struct net *net = seq_file_net(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4293) struct inet6_ifaddr *ifa = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4294) int p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4296) /* initial bucket if pos is 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4297) if (pos == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4298) state->bucket = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4299) state->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4302) for (; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4303) hlist_for_each_entry_rcu(ifa, &inet6_addr_lst[state->bucket],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4304) addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4305) if (!net_eq(dev_net(ifa->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4306) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4307) /* sync with offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4308) if (p < state->offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4309) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4310) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4312) return ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4315) /* prepare for next bucket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4316) state->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4317) p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4319) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4322) static struct inet6_ifaddr *if6_get_next(struct seq_file *seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4323) struct inet6_ifaddr *ifa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4324) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4325) struct if6_iter_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4326) struct net *net = seq_file_net(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4328) hlist_for_each_entry_continue_rcu(ifa, addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4329) if (!net_eq(dev_net(ifa->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4330) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4331) state->offset++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4332) return ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4335) state->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4336) while (++state->bucket < IN6_ADDR_HSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4337) hlist_for_each_entry_rcu(ifa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4338) &inet6_addr_lst[state->bucket], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4339) if (!net_eq(dev_net(ifa->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4340) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4341) return ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4345) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4348) static void *if6_seq_start(struct seq_file *seq, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4349) __acquires(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4351) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4352) return if6_get_first(seq, *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4355) static void *if6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4357) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4359) ifa = if6_get_next(seq, v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4360) ++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4361) return ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4364) static void if6_seq_stop(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4365) __releases(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4367) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4370) static int if6_seq_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4372) struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4373) seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4374) &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4375) ifp->idev->dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4376) ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4377) ifp->scope,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4378) (u8) ifp->flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4379) ifp->idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4380) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4383) static const struct seq_operations if6_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4384) .start = if6_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4385) .next = if6_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4386) .show = if6_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4387) .stop = if6_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4388) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4390) static int __net_init if6_proc_net_init(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4391) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4392) if (!proc_create_net("if_inet6", 0444, net->proc_net, &if6_seq_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4393) sizeof(struct if6_iter_state)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4394) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4395) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4398) static void __net_exit if6_proc_net_exit(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4400) remove_proc_entry("if_inet6", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4403) static struct pernet_operations if6_proc_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4404) .init = if6_proc_net_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4405) .exit = if6_proc_net_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4406) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4408) int __init if6_proc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4410) return register_pernet_subsys(&if6_proc_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4413) void if6_proc_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4414) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4415) unregister_pernet_subsys(&if6_proc_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4417) #endif /* CONFIG_PROC_FS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4419) #if IS_ENABLED(CONFIG_IPV6_MIP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4420) /* Check if address is a home address configured on any interface. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4421) int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4423) unsigned int hash = inet6_addr_hash(net, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4424) struct inet6_ifaddr *ifp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4425) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4427) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4428) hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4429) if (!net_eq(dev_net(ifp->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4430) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4431) if (ipv6_addr_equal(&ifp->addr, addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4432) (ifp->flags & IFA_F_HOMEADDRESS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4433) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4437) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4438) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4440) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4442) /* RFC6554 has some algorithm to avoid loops in segment routing by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4443) * checking if the segments contains any of a local interface address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4444) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4445) * Quote:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4446) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4447) * To detect loops in the SRH, a router MUST determine if the SRH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4448) * includes multiple addresses assigned to any interface on that router.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4449) * If such addresses appear more than once and are separated by at least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4450) * one address not assigned to that router.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4451) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4452) int ipv6_chk_rpl_srh_loop(struct net *net, const struct in6_addr *segs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4453) unsigned char nsegs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4455) const struct in6_addr *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4456) int i, ret = 0, found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4457) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4458) bool separated = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4459) unsigned int hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4460) bool hash_found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4462) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4463) for (i = 0; i < nsegs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4464) addr = &segs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4465) hash = inet6_addr_hash(net, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4467) hash_found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4468) hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4469) if (!net_eq(dev_net(ifp->idev->dev), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4470) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4472) if (ipv6_addr_equal(&ifp->addr, addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4473) hash_found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4474) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4478) if (hash_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4479) if (found > 1 && separated) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4480) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4481) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4484) separated = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4485) found++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4486) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4487) separated = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4490) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4492) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4495) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4496) * Periodic address status verification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4499) static void addrconf_verify_rtnl(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4501) unsigned long now, next, next_sec, next_sched;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4502) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4503) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4505) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4507) rcu_read_lock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4508) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4509) next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4511) cancel_delayed_work(&addr_chk_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4513) for (i = 0; i < IN6_ADDR_HSIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4514) restart:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4515) hlist_for_each_entry_rcu_bh(ifp, &inet6_addr_lst[i], addr_lst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4516) unsigned long age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4518) /* When setting preferred_lft to a value not zero or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4519) * infinity, while valid_lft is infinity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4520) * IFA_F_PERMANENT has a non-infinity life time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4521) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4522) if ((ifp->flags & IFA_F_PERMANENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4523) (ifp->prefered_lft == INFINITY_LIFE_TIME))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4524) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4526) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4527) /* We try to batch several events at once. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4528) age = (now - ifp->tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4530) if (ifp->valid_lft != INFINITY_LIFE_TIME &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4531) age >= ifp->valid_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4532) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4533) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4534) ipv6_del_addr(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4535) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4536) } else if (ifp->prefered_lft == INFINITY_LIFE_TIME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4537) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4538) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4539) } else if (age >= ifp->prefered_lft) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4540) /* jiffies - ifp->tstamp > age >= ifp->prefered_lft */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4541) int deprecate = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4543) if (!(ifp->flags&IFA_F_DEPRECATED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4544) deprecate = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4545) ifp->flags |= IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4548) if ((ifp->valid_lft != INFINITY_LIFE_TIME) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4549) (time_before(ifp->tstamp + ifp->valid_lft * HZ, next)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4550) next = ifp->tstamp + ifp->valid_lft * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4552) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4554) if (deprecate) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4555) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4557) ipv6_ifa_notify(0, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4558) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4559) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4561) } else if ((ifp->flags&IFA_F_TEMPORARY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4562) !(ifp->flags&IFA_F_TENTATIVE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4563) unsigned long regen_advance = ifp->idev->cnf.regen_max_retry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4564) ifp->idev->cnf.dad_transmits *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4565) max(NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME), HZ/100) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4567) if (age >= ifp->prefered_lft - regen_advance) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4568) struct inet6_ifaddr *ifpub = ifp->ifpub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4569) if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4570) next = ifp->tstamp + ifp->prefered_lft * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4571) if (!ifp->regen_count && ifpub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4572) ifp->regen_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4573) in6_ifa_hold(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4574) in6_ifa_hold(ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4575) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4577) spin_lock(&ifpub->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4578) ifpub->regen_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4579) spin_unlock(&ifpub->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4580) rcu_read_unlock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4581) ipv6_create_tempaddr(ifpub, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4582) in6_ifa_put(ifpub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4583) in6_ifa_put(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4584) rcu_read_lock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4585) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4587) } else if (time_before(ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ, next))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4588) next = ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4589) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4590) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4591) /* ifp->prefered_lft <= ifp->valid_lft */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4592) if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4593) next = ifp->tstamp + ifp->prefered_lft * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4594) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4599) next_sec = round_jiffies_up(next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4600) next_sched = next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4602) /* If rounded timeout is accurate enough, accept it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4603) if (time_before(next_sec, next + ADDRCONF_TIMER_FUZZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4604) next_sched = next_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4606) /* And minimum interval is ADDRCONF_TIMER_FUZZ_MAX. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4607) if (time_before(next_sched, jiffies + ADDRCONF_TIMER_FUZZ_MAX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4608) next_sched = jiffies + ADDRCONF_TIMER_FUZZ_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4610) pr_debug("now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4611) now, next, next_sec, next_sched);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4612) mod_delayed_work(addrconf_wq, &addr_chk_work, next_sched - now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4613) rcu_read_unlock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4616) static void addrconf_verify_work(struct work_struct *w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4617) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4618) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4619) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4620) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4623) static void addrconf_verify(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4625) mod_delayed_work(addrconf_wq, &addr_chk_work, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4628) static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4629) struct in6_addr **peer_pfx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4631) struct in6_addr *pfx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4633) *peer_pfx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4635) if (addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4636) pfx = nla_data(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4638) if (local) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4639) if (pfx && nla_memcmp(local, pfx, sizeof(*pfx)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4640) *peer_pfx = pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4641) pfx = nla_data(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4644) return pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4647) static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4648) [IFA_ADDRESS] = { .len = sizeof(struct in6_addr) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4649) [IFA_LOCAL] = { .len = sizeof(struct in6_addr) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4650) [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4651) [IFA_FLAGS] = { .len = sizeof(u32) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4652) [IFA_RT_PRIORITY] = { .len = sizeof(u32) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4653) [IFA_TARGET_NETNSID] = { .type = NLA_S32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4654) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4656) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4657) inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4658) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4659) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4660) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4661) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4662) struct nlattr *tb[IFA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4663) struct in6_addr *pfx, *peer_pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4664) u32 ifa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4665) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4667) err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4668) ifa_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4669) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4670) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4672) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4673) pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4674) if (!pfx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4675) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4677) ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4679) /* We ignore other flags so far. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4680) ifa_flags &= IFA_F_MANAGETEMPADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4682) return inet6_addr_del(net, ifm->ifa_index, ifa_flags, pfx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4683) ifm->ifa_prefixlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4686) static int modify_prefix_route(struct inet6_ifaddr *ifp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4687) unsigned long expires, u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4688) bool modify_peer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4689) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4690) struct fib6_info *f6i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4691) u32 prio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4693) f6i = addrconf_get_prefix_route(modify_peer ? &ifp->peer_addr : &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4694) ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4695) ifp->idev->dev, 0, RTF_DEFAULT, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4696) if (!f6i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4697) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4699) prio = ifp->rt_priority ? : IP6_RT_PRIO_ADDRCONF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4700) if (f6i->fib6_metric != prio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4701) /* delete old one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4702) ip6_del_rt(dev_net(ifp->idev->dev), f6i, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4704) /* add new one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4705) addrconf_prefix_route(modify_peer ? &ifp->peer_addr : &ifp->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4706) ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4707) ifp->rt_priority, ifp->idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4708) expires, flags, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4709) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4710) if (!expires)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4711) fib6_clean_expires(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4712) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4713) fib6_set_expires(f6i, expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4715) fib6_info_release(f6i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4718) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4721) static int inet6_addr_modify(struct inet6_ifaddr *ifp, struct ifa6_config *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4722) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4723) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4724) clock_t expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4725) unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4726) bool was_managetempaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4727) bool had_prefixroute;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4728) bool new_peer = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4730) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4732) if (!cfg->valid_lft || cfg->preferred_lft > cfg->valid_lft)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4733) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4735) if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4736) (ifp->flags & IFA_F_TEMPORARY || ifp->prefix_len != 64))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4737) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4739) if (!(ifp->flags & IFA_F_TENTATIVE) || ifp->flags & IFA_F_DADFAILED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4740) cfg->ifa_flags &= ~IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4742) timeout = addrconf_timeout_fixup(cfg->valid_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4743) if (addrconf_finite_timeout(timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4744) expires = jiffies_to_clock_t(timeout * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4745) cfg->valid_lft = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4746) flags = RTF_EXPIRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4747) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4748) expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4749) flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4750) cfg->ifa_flags |= IFA_F_PERMANENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4751) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4753) timeout = addrconf_timeout_fixup(cfg->preferred_lft, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4754) if (addrconf_finite_timeout(timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4755) if (timeout == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4756) cfg->ifa_flags |= IFA_F_DEPRECATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4757) cfg->preferred_lft = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4760) if (cfg->peer_pfx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4761) memcmp(&ifp->peer_addr, cfg->peer_pfx, sizeof(struct in6_addr))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4762) if (!ipv6_addr_any(&ifp->peer_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4763) cleanup_prefix_route(ifp, expires, true, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4764) new_peer = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4767) spin_lock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4768) was_managetempaddr = ifp->flags & IFA_F_MANAGETEMPADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4769) had_prefixroute = ifp->flags & IFA_F_PERMANENT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4770) !(ifp->flags & IFA_F_NOPREFIXROUTE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4771) ifp->flags &= ~(IFA_F_DEPRECATED | IFA_F_PERMANENT | IFA_F_NODAD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4772) IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4773) IFA_F_NOPREFIXROUTE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4774) ifp->flags |= cfg->ifa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4775) ifp->tstamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4776) ifp->valid_lft = cfg->valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4777) ifp->prefered_lft = cfg->preferred_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4779) if (cfg->rt_priority && cfg->rt_priority != ifp->rt_priority)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4780) ifp->rt_priority = cfg->rt_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4782) if (new_peer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4783) ifp->peer_addr = *cfg->peer_pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4785) spin_unlock_bh(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4786) if (!(ifp->flags&IFA_F_TENTATIVE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4787) ipv6_ifa_notify(0, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4789) if (!(cfg->ifa_flags & IFA_F_NOPREFIXROUTE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4790) int rc = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4792) if (had_prefixroute)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4793) rc = modify_prefix_route(ifp, expires, flags, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4795) /* prefix route could have been deleted; if so restore it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4796) if (rc == -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4797) addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4798) ifp->rt_priority, ifp->idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4799) expires, flags, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4802) if (had_prefixroute && !ipv6_addr_any(&ifp->peer_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4803) rc = modify_prefix_route(ifp, expires, flags, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4805) if (rc == -ENOENT && !ipv6_addr_any(&ifp->peer_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4806) addrconf_prefix_route(&ifp->peer_addr, ifp->prefix_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4807) ifp->rt_priority, ifp->idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4808) expires, flags, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4810) } else if (had_prefixroute) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4811) enum cleanup_prefix_rt_t action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4812) unsigned long rt_expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4814) write_lock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4815) action = check_cleanup_prefix_route(ifp, &rt_expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4816) write_unlock_bh(&ifp->idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4818) if (action != CLEANUP_PREFIX_RT_NOP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4819) cleanup_prefix_route(ifp, rt_expires,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4820) action == CLEANUP_PREFIX_RT_DEL, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4824) if (was_managetempaddr || ifp->flags & IFA_F_MANAGETEMPADDR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4825) if (was_managetempaddr &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4826) !(ifp->flags & IFA_F_MANAGETEMPADDR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4827) cfg->valid_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4828) cfg->preferred_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4829) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4830) manage_tempaddrs(ifp->idev, ifp, cfg->valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4831) cfg->preferred_lft, !was_managetempaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4832) jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4833) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4835) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4837) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4840) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4841) inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4842) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4843) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4844) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4845) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4846) struct nlattr *tb[IFA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4847) struct in6_addr *peer_pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4848) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4849) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4850) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4851) struct ifa6_config cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4852) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4854) err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4855) ifa_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4856) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4857) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4859) memset(&cfg, 0, sizeof(cfg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4861) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4862) cfg.pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4863) if (!cfg.pfx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4864) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4866) cfg.peer_pfx = peer_pfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4867) cfg.plen = ifm->ifa_prefixlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4868) if (tb[IFA_RT_PRIORITY])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4869) cfg.rt_priority = nla_get_u32(tb[IFA_RT_PRIORITY]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4871) cfg.valid_lft = INFINITY_LIFE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4872) cfg.preferred_lft = INFINITY_LIFE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4874) if (tb[IFA_CACHEINFO]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4875) struct ifa_cacheinfo *ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4877) ci = nla_data(tb[IFA_CACHEINFO]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4878) cfg.valid_lft = ci->ifa_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4879) cfg.preferred_lft = ci->ifa_prefered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4882) dev = __dev_get_by_index(net, ifm->ifa_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4883) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4884) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4886) if (tb[IFA_FLAGS])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4887) cfg.ifa_flags = nla_get_u32(tb[IFA_FLAGS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4888) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4889) cfg.ifa_flags = ifm->ifa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4891) /* We ignore other flags so far. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4892) cfg.ifa_flags &= IFA_F_NODAD | IFA_F_HOMEADDRESS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4893) IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4894) IFA_F_MCAUTOJOIN | IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4896) idev = ipv6_find_idev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4897) if (IS_ERR(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4898) return PTR_ERR(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4900) if (!ipv6_allow_optimistic_dad(net, idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4901) cfg.ifa_flags &= ~IFA_F_OPTIMISTIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4903) if (cfg.ifa_flags & IFA_F_NODAD &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4904) cfg.ifa_flags & IFA_F_OPTIMISTIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4905) NL_SET_ERR_MSG(extack, "IFA_F_NODAD and IFA_F_OPTIMISTIC are mutually exclusive");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4906) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4909) ifa = ipv6_get_ifaddr(net, cfg.pfx, dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4910) if (!ifa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4911) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4912) * It would be best to check for !NLM_F_CREATE here but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4913) * userspace already relies on not having to provide this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4914) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4915) return inet6_addr_add(net, ifm->ifa_index, &cfg, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4918) if (nlh->nlmsg_flags & NLM_F_EXCL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4919) !(nlh->nlmsg_flags & NLM_F_REPLACE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4920) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4921) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4922) err = inet6_addr_modify(ifa, &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4924) in6_ifa_put(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4926) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4929) static void put_ifaddrmsg(struct nlmsghdr *nlh, u8 prefixlen, u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4930) u8 scope, int ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4932) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4934) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4935) ifm->ifa_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4936) ifm->ifa_prefixlen = prefixlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4937) ifm->ifa_flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4938) ifm->ifa_scope = scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4939) ifm->ifa_index = ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4942) static int put_cacheinfo(struct sk_buff *skb, unsigned long cstamp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4943) unsigned long tstamp, u32 preferred, u32 valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4945) struct ifa_cacheinfo ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4947) ci.cstamp = cstamp_delta(cstamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4948) ci.tstamp = cstamp_delta(tstamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4949) ci.ifa_prefered = preferred;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4950) ci.ifa_valid = valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4952) return nla_put(skb, IFA_CACHEINFO, sizeof(ci), &ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4953) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4955) static inline int rt_scope(int ifa_scope)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4956) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4957) if (ifa_scope & IFA_HOST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4958) return RT_SCOPE_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4959) else if (ifa_scope & IFA_LINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4960) return RT_SCOPE_LINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4961) else if (ifa_scope & IFA_SITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4962) return RT_SCOPE_SITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4963) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4964) return RT_SCOPE_UNIVERSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4965) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4967) static inline int inet6_ifaddr_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4968) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4969) return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4970) + nla_total_size(16) /* IFA_LOCAL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4971) + nla_total_size(16) /* IFA_ADDRESS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4972) + nla_total_size(sizeof(struct ifa_cacheinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4973) + nla_total_size(4) /* IFA_FLAGS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4974) + nla_total_size(4) /* IFA_RT_PRIORITY */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4975) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4977) enum addr_type_t {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4978) UNICAST_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4979) MULTICAST_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4980) ANYCAST_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4981) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4983) struct inet6_fill_args {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4984) u32 portid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4985) u32 seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4986) int event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4987) unsigned int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4988) int netnsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4989) int ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4990) enum addr_type_t type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4991) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4993) static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4994) struct inet6_fill_args *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4995) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4996) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4997) u32 preferred, valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4999) nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5000) sizeof(struct ifaddrmsg), args->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5001) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5002) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5004) put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5005) ifa->idev->dev->ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5007) if (args->netnsid >= 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5008) nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5009) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5011) spin_lock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5012) if (!((ifa->flags&IFA_F_PERMANENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5013) (ifa->prefered_lft == INFINITY_LIFE_TIME))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5014) preferred = ifa->prefered_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5015) valid = ifa->valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5016) if (preferred != INFINITY_LIFE_TIME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5017) long tval = (jiffies - ifa->tstamp)/HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5018) if (preferred > tval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5019) preferred -= tval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5020) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5021) preferred = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5022) if (valid != INFINITY_LIFE_TIME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5023) if (valid > tval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5024) valid -= tval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5025) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5026) valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5028) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5029) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5030) preferred = INFINITY_LIFE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5031) valid = INFINITY_LIFE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5033) spin_unlock_bh(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5035) if (!ipv6_addr_any(&ifa->peer_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5036) if (nla_put_in6_addr(skb, IFA_LOCAL, &ifa->addr) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5037) nla_put_in6_addr(skb, IFA_ADDRESS, &ifa->peer_addr) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5038) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5039) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5040) if (nla_put_in6_addr(skb, IFA_ADDRESS, &ifa->addr) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5041) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5043) if (ifa->rt_priority &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5044) nla_put_u32(skb, IFA_RT_PRIORITY, ifa->rt_priority))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5045) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5047) if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5048) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5050) if (nla_put_u32(skb, IFA_FLAGS, ifa->flags) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5051) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5053) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5054) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5056) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5057) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5058) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5059) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5061) static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5062) struct inet6_fill_args *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5063) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5064) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5065) u8 scope = RT_SCOPE_UNIVERSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5066) int ifindex = ifmca->idev->dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5068) if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5069) scope = RT_SCOPE_SITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5071) nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5072) sizeof(struct ifaddrmsg), args->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5073) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5074) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5076) if (args->netnsid >= 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5077) nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5078) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5079) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5082) put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5083) if (nla_put_in6_addr(skb, IFA_MULTICAST, &ifmca->mca_addr) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5084) put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5085) INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5086) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5087) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5088) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5090) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5091) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5092) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5094) static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5095) struct inet6_fill_args *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5096) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5097) struct net_device *dev = fib6_info_nh_dev(ifaca->aca_rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5098) int ifindex = dev ? dev->ifindex : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5099) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5100) u8 scope = RT_SCOPE_UNIVERSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5102) if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5103) scope = RT_SCOPE_SITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5105) nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5106) sizeof(struct ifaddrmsg), args->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5107) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5108) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5110) if (args->netnsid >= 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5111) nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5112) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5113) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5116) put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5117) if (nla_put_in6_addr(skb, IFA_ANYCAST, &ifaca->aca_addr) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5118) put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5119) INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5120) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5121) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5124) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5125) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5128) /* called with rcu_read_lock() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5129) static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5130) struct netlink_callback *cb, int s_ip_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5131) struct inet6_fill_args *fillargs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5133) struct ifmcaddr6 *ifmca;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5134) struct ifacaddr6 *ifaca;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5135) int ip_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5136) int err = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5138) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5139) switch (fillargs->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5140) case UNICAST_ADDR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5141) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5142) fillargs->event = RTM_NEWADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5144) /* unicast address incl. temp addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5145) list_for_each_entry(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5146) if (ip_idx < s_ip_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5147) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5148) err = inet6_fill_ifaddr(skb, ifa, fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5149) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5150) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5151) nl_dump_check_consistent(cb, nlmsg_hdr(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5152) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5153) ip_idx++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5155) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5157) case MULTICAST_ADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5158) fillargs->event = RTM_GETMULTICAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5160) /* multicast address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5161) for (ifmca = idev->mc_list; ifmca;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5162) ifmca = ifmca->next, ip_idx++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5163) if (ip_idx < s_ip_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5164) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5165) err = inet6_fill_ifmcaddr(skb, ifmca, fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5166) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5167) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5169) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5170) case ANYCAST_ADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5171) fillargs->event = RTM_GETANYCAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5172) /* anycast address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5173) for (ifaca = idev->ac_list; ifaca;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5174) ifaca = ifaca->aca_next, ip_idx++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5175) if (ip_idx < s_ip_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5176) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5177) err = inet6_fill_ifacaddr(skb, ifaca, fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5178) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5179) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5181) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5182) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5183) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5185) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5186) cb->args[2] = ip_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5187) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5190) static int inet6_valid_dump_ifaddr_req(const struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5191) struct inet6_fill_args *fillargs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5192) struct net **tgt_net, struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5193) struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5195) struct netlink_ext_ack *extack = cb->extack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5196) struct nlattr *tb[IFA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5197) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5198) int err, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5200) if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5201) NL_SET_ERR_MSG_MOD(extack, "Invalid header for address dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5202) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5205) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5206) if (ifm->ifa_prefixlen || ifm->ifa_flags || ifm->ifa_scope) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5207) NL_SET_ERR_MSG_MOD(extack, "Invalid values in header for address dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5208) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5211) fillargs->ifindex = ifm->ifa_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5212) if (fillargs->ifindex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5213) cb->answer_flags |= NLM_F_DUMP_FILTERED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5214) fillargs->flags |= NLM_F_DUMP_FILTERED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5217) err = nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5218) ifa_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5219) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5220) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5222) for (i = 0; i <= IFA_MAX; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5223) if (!tb[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5224) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5226) if (i == IFA_TARGET_NETNSID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5227) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5229) fillargs->netnsid = nla_get_s32(tb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5230) net = rtnl_get_net_ns_capable(sk, fillargs->netnsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5231) if (IS_ERR(net)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5232) fillargs->netnsid = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5233) NL_SET_ERR_MSG_MOD(extack, "Invalid target network namespace id");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5234) return PTR_ERR(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5236) *tgt_net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5237) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5238) NL_SET_ERR_MSG_MOD(extack, "Unsupported attribute in dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5239) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5246) static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5247) enum addr_type_t type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5249) const struct nlmsghdr *nlh = cb->nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5250) struct inet6_fill_args fillargs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5251) .portid = NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5252) .seq = cb->nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5253) .flags = NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5254) .netnsid = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5255) .type = type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5256) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5257) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5258) struct net *tgt_net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5259) int idx, s_idx, s_ip_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5260) int h, s_h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5261) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5262) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5263) struct hlist_head *head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5264) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5266) s_h = cb->args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5267) s_idx = idx = cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5268) s_ip_idx = cb->args[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5270) if (cb->strict_check) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5271) err = inet6_valid_dump_ifaddr_req(nlh, &fillargs, &tgt_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5272) skb->sk, cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5273) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5274) goto put_tgt_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5276) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5277) if (fillargs.ifindex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5278) dev = __dev_get_by_index(tgt_net, fillargs.ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5279) if (!dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5280) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5281) goto put_tgt_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5283) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5284) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5285) err = in6_dump_addrs(idev, skb, cb, s_ip_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5286) &fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5287) if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5288) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5290) goto put_tgt_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5294) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5295) cb->seq = atomic_read(&tgt_net->ipv6.dev_addr_genid) ^ tgt_net->dev_base_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5296) for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5297) idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5298) head = &tgt_net->dev_index_head[h];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5299) hlist_for_each_entry_rcu(dev, head, index_hlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5300) if (idx < s_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5301) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5302) if (h > s_h || idx > s_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5303) s_ip_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5304) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5305) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5306) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5308) if (in6_dump_addrs(idev, skb, cb, s_ip_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5309) &fillargs) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5310) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5311) cont:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5312) idx++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5315) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5316) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5317) cb->args[0] = h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5318) cb->args[1] = idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5319) put_tgt_net:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5320) if (fillargs.netnsid >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5321) put_net(tgt_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5323) return skb->len ? : err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5326) static int inet6_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5328) enum addr_type_t type = UNICAST_ADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5330) return inet6_dump_addr(skb, cb, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5333) static int inet6_dump_ifmcaddr(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5335) enum addr_type_t type = MULTICAST_ADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5337) return inet6_dump_addr(skb, cb, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5341) static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5343) enum addr_type_t type = ANYCAST_ADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5345) return inet6_dump_addr(skb, cb, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5348) static int inet6_rtm_valid_getaddr_req(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5349) const struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5350) struct nlattr **tb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5351) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5352) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5353) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5354) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5356) if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5357) NL_SET_ERR_MSG_MOD(extack, "Invalid header for get address request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5358) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5361) if (!netlink_strict_get_check(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5362) return nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5363) ifa_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5365) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5366) if (ifm->ifa_prefixlen || ifm->ifa_flags || ifm->ifa_scope) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5367) NL_SET_ERR_MSG_MOD(extack, "Invalid values in header for get address request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5368) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5371) err = nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5372) ifa_ipv6_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5373) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5374) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5376) for (i = 0; i <= IFA_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5377) if (!tb[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5378) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5380) switch (i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5381) case IFA_TARGET_NETNSID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5382) case IFA_ADDRESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5383) case IFA_LOCAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5384) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5385) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5386) NL_SET_ERR_MSG_MOD(extack, "Unsupported attribute in get address request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5387) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5391) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5394) static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5395) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5397) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5398) struct inet6_fill_args fillargs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5399) .portid = NETLINK_CB(in_skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5400) .seq = nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5401) .event = RTM_NEWADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5402) .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5403) .netnsid = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5404) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5405) struct net *tgt_net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5406) struct ifaddrmsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5407) struct nlattr *tb[IFA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5408) struct in6_addr *addr = NULL, *peer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5409) struct net_device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5410) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5411) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5412) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5414) err = inet6_rtm_valid_getaddr_req(in_skb, nlh, tb, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5415) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5416) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5418) if (tb[IFA_TARGET_NETNSID]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5419) fillargs.netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5421) tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(in_skb).sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5422) fillargs.netnsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5423) if (IS_ERR(tgt_net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5424) return PTR_ERR(tgt_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5427) addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5428) if (!addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5429) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5431) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5432) if (ifm->ifa_index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5433) dev = dev_get_by_index(tgt_net, ifm->ifa_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5435) ifa = ipv6_get_ifaddr(tgt_net, addr, dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5436) if (!ifa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5437) err = -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5438) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5441) skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5442) if (!skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5443) err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5444) goto errout_ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5447) err = inet6_fill_ifaddr(skb, ifa, &fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5448) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5449) /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5450) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5451) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5452) goto errout_ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5454) err = rtnl_unicast(skb, tgt_net, NETLINK_CB(in_skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5455) errout_ifa:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5456) in6_ifa_put(ifa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5457) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5458) if (dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5459) dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5460) if (fillargs.netnsid >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5461) put_net(tgt_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5463) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5466) static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5468) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5469) struct net *net = dev_net(ifa->idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5470) struct inet6_fill_args fillargs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5471) .portid = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5472) .seq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5473) .event = event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5474) .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5475) .netnsid = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5476) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5477) int err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5479) skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5480) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5481) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5483) err = inet6_fill_ifaddr(skb, ifa, &fillargs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5484) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5485) /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5486) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5487) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5488) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5490) rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5491) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5492) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5493) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5494) rtnl_set_sk_err(net, RTNLGRP_IPV6_IFADDR, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5497) static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5498) __s32 *array, int bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5500) BUG_ON(bytes < (DEVCONF_MAX * 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5502) memset(array, 0, bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5503) array[DEVCONF_FORWARDING] = cnf->forwarding;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5504) array[DEVCONF_HOPLIMIT] = cnf->hop_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5505) array[DEVCONF_MTU6] = cnf->mtu6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5506) array[DEVCONF_ACCEPT_RA] = cnf->accept_ra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5507) array[DEVCONF_ACCEPT_REDIRECTS] = cnf->accept_redirects;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5508) array[DEVCONF_AUTOCONF] = cnf->autoconf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5509) array[DEVCONF_DAD_TRANSMITS] = cnf->dad_transmits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5510) array[DEVCONF_RTR_SOLICITS] = cnf->rtr_solicits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5511) array[DEVCONF_RTR_SOLICIT_INTERVAL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5512) jiffies_to_msecs(cnf->rtr_solicit_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5513) array[DEVCONF_RTR_SOLICIT_MAX_INTERVAL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5514) jiffies_to_msecs(cnf->rtr_solicit_max_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5515) array[DEVCONF_RTR_SOLICIT_DELAY] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5516) jiffies_to_msecs(cnf->rtr_solicit_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5517) array[DEVCONF_FORCE_MLD_VERSION] = cnf->force_mld_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5518) array[DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5519) jiffies_to_msecs(cnf->mldv1_unsolicited_report_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5520) array[DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5521) jiffies_to_msecs(cnf->mldv2_unsolicited_report_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5522) array[DEVCONF_USE_TEMPADDR] = cnf->use_tempaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5523) array[DEVCONF_TEMP_VALID_LFT] = cnf->temp_valid_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5524) array[DEVCONF_TEMP_PREFERED_LFT] = cnf->temp_prefered_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5525) array[DEVCONF_REGEN_MAX_RETRY] = cnf->regen_max_retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5526) array[DEVCONF_MAX_DESYNC_FACTOR] = cnf->max_desync_factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5527) array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5528) array[DEVCONF_ACCEPT_RA_DEFRTR] = cnf->accept_ra_defrtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5529) array[DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT] = cnf->accept_ra_min_hop_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5530) array[DEVCONF_ACCEPT_RA_PINFO] = cnf->accept_ra_pinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5531) #ifdef CONFIG_IPV6_ROUTER_PREF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5532) array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5533) array[DEVCONF_RTR_PROBE_INTERVAL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5534) jiffies_to_msecs(cnf->rtr_probe_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5535) #ifdef CONFIG_IPV6_ROUTE_INFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5536) array[DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN] = cnf->accept_ra_rt_info_min_plen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5537) array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5538) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5539) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5540) array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5541) array[DEVCONF_ACCEPT_SOURCE_ROUTE] = cnf->accept_source_route;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5542) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5543) array[DEVCONF_OPTIMISTIC_DAD] = cnf->optimistic_dad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5544) array[DEVCONF_USE_OPTIMISTIC] = cnf->use_optimistic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5545) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5546) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5547) array[DEVCONF_MC_FORWARDING] = cnf->mc_forwarding;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5548) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5549) array[DEVCONF_DISABLE_IPV6] = cnf->disable_ipv6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5550) array[DEVCONF_ACCEPT_DAD] = cnf->accept_dad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5551) array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5552) array[DEVCONF_NDISC_NOTIFY] = cnf->ndisc_notify;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5553) array[DEVCONF_SUPPRESS_FRAG_NDISC] = cnf->suppress_frag_ndisc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5554) array[DEVCONF_ACCEPT_RA_FROM_LOCAL] = cnf->accept_ra_from_local;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5555) array[DEVCONF_ACCEPT_RA_MTU] = cnf->accept_ra_mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5556) array[DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN] = cnf->ignore_routes_with_linkdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5557) /* we omit DEVCONF_STABLE_SECRET for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5558) array[DEVCONF_USE_OIF_ADDRS_ONLY] = cnf->use_oif_addrs_only;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5559) array[DEVCONF_DROP_UNICAST_IN_L2_MULTICAST] = cnf->drop_unicast_in_l2_multicast;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5560) array[DEVCONF_DROP_UNSOLICITED_NA] = cnf->drop_unsolicited_na;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5561) array[DEVCONF_KEEP_ADDR_ON_DOWN] = cnf->keep_addr_on_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5562) array[DEVCONF_SEG6_ENABLED] = cnf->seg6_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5563) #ifdef CONFIG_IPV6_SEG6_HMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5564) array[DEVCONF_SEG6_REQUIRE_HMAC] = cnf->seg6_require_hmac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5565) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5566) array[DEVCONF_ENHANCED_DAD] = cnf->enhanced_dad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5567) array[DEVCONF_ADDR_GEN_MODE] = cnf->addr_gen_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5568) array[DEVCONF_DISABLE_POLICY] = cnf->disable_policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5569) array[DEVCONF_NDISC_TCLASS] = cnf->ndisc_tclass;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5570) array[DEVCONF_RPL_SEG_ENABLED] = cnf->rpl_seg_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5573) static inline size_t inet6_ifla6_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5575) return nla_total_size(4) /* IFLA_INET6_FLAGS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5576) + nla_total_size(sizeof(struct ifla_cacheinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5577) + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5578) + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5579) + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5580) + nla_total_size(sizeof(struct in6_addr)) /* IFLA_INET6_TOKEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5581) + nla_total_size(1) /* IFLA_INET6_ADDR_GEN_MODE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5582) + 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5585) static inline size_t inet6_if_nlmsg_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5587) return NLMSG_ALIGN(sizeof(struct ifinfomsg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5588) + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5589) + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5590) + nla_total_size(4) /* IFLA_MTU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5591) + nla_total_size(4) /* IFLA_LINK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5592) + nla_total_size(1) /* IFLA_OPERSTATE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5593) + nla_total_size(inet6_ifla6_size()); /* IFLA_PROTINFO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5596) static inline void __snmp6_fill_statsdev(u64 *stats, atomic_long_t *mib,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5597) int bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5599) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5600) int pad = bytes - sizeof(u64) * ICMP6_MIB_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5601) BUG_ON(pad < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5603) /* Use put_unaligned() because stats may not be aligned for u64. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5604) put_unaligned(ICMP6_MIB_MAX, &stats[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5605) for (i = 1; i < ICMP6_MIB_MAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5606) put_unaligned(atomic_long_read(&mib[i]), &stats[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5608) memset(&stats[ICMP6_MIB_MAX], 0, pad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5611) static inline void __snmp6_fill_stats64(u64 *stats, void __percpu *mib,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5612) int bytes, size_t syncpoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5614) int i, c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5615) u64 buff[IPSTATS_MIB_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5616) int pad = bytes - sizeof(u64) * IPSTATS_MIB_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5618) BUG_ON(pad < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5620) memset(buff, 0, sizeof(buff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5621) buff[0] = IPSTATS_MIB_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5623) for_each_possible_cpu(c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5624) for (i = 1; i < IPSTATS_MIB_MAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5625) buff[i] += snmp_get_cpu_field64(mib, c, i, syncpoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5628) memcpy(stats, buff, IPSTATS_MIB_MAX * sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5629) memset(&stats[IPSTATS_MIB_MAX], 0, pad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5632) static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5633) int bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5634) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5635) switch (attrtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5636) case IFLA_INET6_STATS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5637) __snmp6_fill_stats64(stats, idev->stats.ipv6, bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5638) offsetof(struct ipstats_mib, syncp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5639) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5640) case IFLA_INET6_ICMP6STATS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5641) __snmp6_fill_statsdev(stats, idev->stats.icmpv6dev->mibs, bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5642) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5646) static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5647) u32 ext_filter_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5649) struct nlattr *nla;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5650) struct ifla_cacheinfo ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5652) if (nla_put_u32(skb, IFLA_INET6_FLAGS, idev->if_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5653) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5654) ci.max_reasm_len = IPV6_MAXPLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5655) ci.tstamp = cstamp_delta(idev->tstamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5656) ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5657) ci.retrans_time = jiffies_to_msecs(NEIGH_VAR(idev->nd_parms, RETRANS_TIME));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5658) if (nla_put(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5659) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5660) nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5661) if (!nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5662) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5663) ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5665) /* XXX - MC not implemented */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5667) if (ext_filter_mask & RTEXT_FILTER_SKIP_STATS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5668) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5670) nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5671) if (!nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5672) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5673) snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5675) nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5676) if (!nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5677) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5678) snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5680) nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5681) if (!nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5682) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5683) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5684) memcpy(nla_data(nla), idev->token.s6_addr, nla_len(nla));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5685) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5687) if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->cnf.addr_gen_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5688) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5690) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5692) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5693) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5696) static size_t inet6_get_link_af_size(const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5697) u32 ext_filter_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5698) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5699) if (!__in6_dev_get(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5700) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5702) return inet6_ifla6_size();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5705) static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5706) u32 ext_filter_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5707) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5708) struct inet6_dev *idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5710) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5711) return -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5713) if (inet6_fill_ifla6_attrs(skb, idev, ext_filter_mask) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5714) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5716) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5719) static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5720) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5721) struct inet6_ifaddr *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5722) struct net_device *dev = idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5723) bool clear_token, update_rs = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5724) struct in6_addr ll_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5726) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5728) if (!token)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5729) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5730) if (dev->flags & (IFF_LOOPBACK | IFF_NOARP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5731) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5732) if (!ipv6_accept_ra(idev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5733) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5734) if (idev->cnf.rtr_solicits == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5735) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5737) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5739) BUILD_BUG_ON(sizeof(token->s6_addr) != 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5740) memcpy(idev->token.s6_addr + 8, token->s6_addr + 8, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5742) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5744) clear_token = ipv6_addr_any(token);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5745) if (clear_token)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5746) goto update_lft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5748) if (!idev->dead && (idev->if_flags & IF_READY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5749) !ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5750) IFA_F_OPTIMISTIC)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5751) /* If we're not ready, then normal ifup will take care
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5752) * of this. Otherwise, we need to request our rs here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5753) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5754) ndisc_send_rs(dev, &ll_addr, &in6addr_linklocal_allrouters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5755) update_rs = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5758) update_lft:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5759) write_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5761) if (update_rs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5762) idev->if_flags |= IF_RS_SENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5763) idev->rs_interval = rfc3315_s14_backoff_init(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5764) idev->cnf.rtr_solicit_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5765) idev->rs_probes = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5766) addrconf_mod_rs_timer(idev, idev->rs_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5769) /* Well, that's kinda nasty ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5770) list_for_each_entry(ifp, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5771) spin_lock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5772) if (ifp->tokenized) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5773) ifp->valid_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5774) ifp->prefered_lft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5776) spin_unlock(&ifp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5777) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5779) write_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5780) inet6_ifinfo_notify(RTM_NEWLINK, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5781) addrconf_verify_rtnl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5782) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5785) static const struct nla_policy inet6_af_policy[IFLA_INET6_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5786) [IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5787) [IFLA_INET6_TOKEN] = { .len = sizeof(struct in6_addr) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5788) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5790) static int check_addr_gen_mode(int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5791) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5792) if (mode != IN6_ADDR_GEN_MODE_EUI64 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5793) mode != IN6_ADDR_GEN_MODE_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5794) mode != IN6_ADDR_GEN_MODE_STABLE_PRIVACY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5795) mode != IN6_ADDR_GEN_MODE_RANDOM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5796) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5797) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5798) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5800) static int check_stable_privacy(struct inet6_dev *idev, struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5801) int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5802) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5803) if (mode == IN6_ADDR_GEN_MODE_STABLE_PRIVACY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5804) !idev->cnf.stable_secret.initialized &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5805) !net->ipv6.devconf_dflt->stable_secret.initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5806) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5807) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5810) static int inet6_validate_link_af(const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5811) const struct nlattr *nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5812) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5813) struct nlattr *tb[IFLA_INET6_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5814) struct inet6_dev *idev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5815) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5817) if (dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5818) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5819) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5820) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5823) err = nla_parse_nested_deprecated(tb, IFLA_INET6_MAX, nla,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5824) inet6_af_policy, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5825) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5826) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5828) if (!tb[IFLA_INET6_TOKEN] && !tb[IFLA_INET6_ADDR_GEN_MODE])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5829) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5831) if (tb[IFLA_INET6_ADDR_GEN_MODE]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5832) u8 mode = nla_get_u8(tb[IFLA_INET6_ADDR_GEN_MODE]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5834) if (check_addr_gen_mode(mode) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5835) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5836) if (dev && check_stable_privacy(idev, dev_net(dev), mode) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5837) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5840) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5843) static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5845) struct inet6_dev *idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5846) struct nlattr *tb[IFLA_INET6_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5847) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5849) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5850) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5852) if (nla_parse_nested_deprecated(tb, IFLA_INET6_MAX, nla, NULL, NULL) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5853) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5855) if (tb[IFLA_INET6_TOKEN]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5856) err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5857) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5858) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5861) if (tb[IFLA_INET6_ADDR_GEN_MODE]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5862) u8 mode = nla_get_u8(tb[IFLA_INET6_ADDR_GEN_MODE]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5864) idev->cnf.addr_gen_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5867) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5870) static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5871) u32 portid, u32 seq, int event, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5872) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5873) struct net_device *dev = idev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5874) struct ifinfomsg *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5875) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5876) void *protoinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5878) nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5879) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5880) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5882) hdr = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5883) hdr->ifi_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5884) hdr->__ifi_pad = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5885) hdr->ifi_type = dev->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5886) hdr->ifi_index = dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5887) hdr->ifi_flags = dev_get_flags(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5888) hdr->ifi_change = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5890) if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5891) (dev->addr_len &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5892) nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5893) nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5894) (dev->ifindex != dev_get_iflink(dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5895) nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5896) nla_put_u8(skb, IFLA_OPERSTATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5897) netif_running(dev) ? dev->operstate : IF_OPER_DOWN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5898) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5899) protoinfo = nla_nest_start_noflag(skb, IFLA_PROTINFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5900) if (!protoinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5901) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5903) if (inet6_fill_ifla6_attrs(skb, idev, 0) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5904) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5906) nla_nest_end(skb, protoinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5907) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5908) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5910) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5911) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5912) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5913) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5915) static int inet6_valid_dump_ifinfo(const struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5916) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5917) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5918) struct ifinfomsg *ifm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5920) if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5921) NL_SET_ERR_MSG_MOD(extack, "Invalid header for link dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5922) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5925) if (nlmsg_attrlen(nlh, sizeof(*ifm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5926) NL_SET_ERR_MSG_MOD(extack, "Invalid data after header");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5927) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5930) ifm = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5931) if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5932) ifm->ifi_change || ifm->ifi_index) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5933) NL_SET_ERR_MSG_MOD(extack, "Invalid values in header for dump request");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5934) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5937) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5940) static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5941) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5942) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5943) int h, s_h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5944) int idx = 0, s_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5945) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5946) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5947) struct hlist_head *head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5949) /* only requests using strict checking can pass data to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5950) * influence the dump
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5951) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5952) if (cb->strict_check) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5953) int err = inet6_valid_dump_ifinfo(cb->nlh, cb->extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5955) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5956) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5957) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5959) s_h = cb->args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5960) s_idx = cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5962) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5963) for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5964) idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5965) head = &net->dev_index_head[h];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5966) hlist_for_each_entry_rcu(dev, head, index_hlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5967) if (idx < s_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5968) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5969) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5970) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5971) goto cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5972) if (inet6_fill_ifinfo(skb, idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5973) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5974) cb->nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5975) RTM_NEWLINK, NLM_F_MULTI) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5976) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5977) cont:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5978) idx++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5981) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5982) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5983) cb->args[1] = idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5984) cb->args[0] = h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5986) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5987) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5989) void inet6_ifinfo_notify(int event, struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5990) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5991) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5992) struct net *net = dev_net(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5993) int err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5995) skb = nlmsg_new(inet6_if_nlmsg_size(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5996) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5997) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5999) err = inet6_fill_ifinfo(skb, idev, 0, 0, event, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6000) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6001) /* -EMSGSIZE implies BUG in inet6_if_nlmsg_size() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6002) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6003) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6004) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6006) rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFINFO, NULL, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6007) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6008) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6009) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6010) rtnl_set_sk_err(net, RTNLGRP_IPV6_IFINFO, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6013) static inline size_t inet6_prefix_nlmsg_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6015) return NLMSG_ALIGN(sizeof(struct prefixmsg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6016) + nla_total_size(sizeof(struct in6_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6017) + nla_total_size(sizeof(struct prefix_cacheinfo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6018) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6020) static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6021) struct prefix_info *pinfo, u32 portid, u32 seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6022) int event, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6023) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6024) struct prefixmsg *pmsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6025) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6026) struct prefix_cacheinfo ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6028) nlh = nlmsg_put(skb, portid, seq, event, sizeof(*pmsg), flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6029) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6030) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6032) pmsg = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6033) pmsg->prefix_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6034) pmsg->prefix_pad1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6035) pmsg->prefix_pad2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6036) pmsg->prefix_ifindex = idev->dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6037) pmsg->prefix_len = pinfo->prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6038) pmsg->prefix_type = pinfo->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6039) pmsg->prefix_pad3 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6040) pmsg->prefix_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6041) if (pinfo->onlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6042) pmsg->prefix_flags |= IF_PREFIX_ONLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6043) if (pinfo->autoconf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6044) pmsg->prefix_flags |= IF_PREFIX_AUTOCONF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6046) if (nla_put(skb, PREFIX_ADDRESS, sizeof(pinfo->prefix), &pinfo->prefix))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6047) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6048) ci.preferred_time = ntohl(pinfo->prefered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6049) ci.valid_time = ntohl(pinfo->valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6050) if (nla_put(skb, PREFIX_CACHEINFO, sizeof(ci), &ci))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6051) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6052) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6053) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6055) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6056) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6057) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6058) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6060) static void inet6_prefix_notify(int event, struct inet6_dev *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6061) struct prefix_info *pinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6063) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6064) struct net *net = dev_net(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6065) int err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6067) skb = nlmsg_new(inet6_prefix_nlmsg_size(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6068) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6069) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6071) err = inet6_fill_prefix(skb, idev, pinfo, 0, 0, event, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6072) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6073) /* -EMSGSIZE implies BUG in inet6_prefix_nlmsg_size() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6074) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6075) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6076) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6077) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6078) rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6079) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6080) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6081) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6082) rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6083) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6085) static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6086) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6087) struct net *net = dev_net(ifp->idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6089) if (event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6090) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6092) inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6094) switch (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6095) case RTM_NEWADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6097) * If the address was optimistic we inserted the route at the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6098) * start of our DAD process, so we don't need to do it again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6099) * If the device was taken down in the middle of the DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6100) * cycle there is a race where we could get here without a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6101) * host route, so nothing to insert. That will be fixed when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6102) * the device is brought up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6104) if (ifp->rt && !rcu_access_pointer(ifp->rt->fib6_node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6105) ip6_ins_rt(net, ifp->rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6106) } else if (!ifp->rt && (ifp->idev->dev->flags & IFF_UP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6107) pr_warn("BUG: Address %pI6c on device %s is missing its host route.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6108) &ifp->addr, ifp->idev->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6111) if (ifp->idev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6112) addrconf_join_anycast(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6113) if (!ipv6_addr_any(&ifp->peer_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6114) addrconf_prefix_route(&ifp->peer_addr, 128,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6115) ifp->rt_priority, ifp->idev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6116) 0, 0, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6117) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6118) case RTM_DELADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6119) if (ifp->idev->cnf.forwarding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6120) addrconf_leave_anycast(ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6121) addrconf_leave_solict(ifp->idev, &ifp->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6122) if (!ipv6_addr_any(&ifp->peer_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6123) struct fib6_info *rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6125) rt = addrconf_get_prefix_route(&ifp->peer_addr, 128,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6126) ifp->idev->dev, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6127) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6128) if (rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6129) ip6_del_rt(net, rt, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6131) if (ifp->rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6132) ip6_del_rt(net, ifp->rt, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6133) ifp->rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6135) rt_genid_bump_ipv6(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6136) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6138) atomic_inc(&net->ipv6.dev_addr_genid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6141) static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6143) rcu_read_lock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6144) if (likely(ifp->idev->dead == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6145) __ipv6_ifa_notify(event, ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6146) rcu_read_unlock_bh();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6149) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6151) static int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6152) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6154) int *valp = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6155) int val = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6156) loff_t pos = *ppos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6157) struct ctl_table lctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6158) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6161) * ctl->data points to idev->cnf.forwarding, we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6162) * not modify it until we get the rtnl lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6164) lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6165) lctl.data = &val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6167) ret = proc_dointvec(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6169) if (write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6170) ret = addrconf_fixup_forwarding(ctl, valp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6171) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6172) *ppos = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6173) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6176) static int addrconf_sysctl_mtu(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6177) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6179) struct inet6_dev *idev = ctl->extra1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6180) int min_mtu = IPV6_MIN_MTU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6181) struct ctl_table lctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6183) lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6184) lctl.extra1 = &min_mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6185) lctl.extra2 = idev ? &idev->dev->mtu : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6187) return proc_dointvec_minmax(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6190) static void dev_disable_change(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6192) struct netdev_notifier_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6194) if (!idev || !idev->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6195) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6197) netdev_notifier_info_init(&info, idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6198) if (idev->cnf.disable_ipv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6199) addrconf_notify(NULL, NETDEV_DOWN, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6200) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6201) addrconf_notify(NULL, NETDEV_UP, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6204) static void addrconf_disable_change(struct net *net, __s32 newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6206) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6207) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6209) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6210) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6211) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6212) int changed = (!idev->cnf.disable_ipv6) ^ (!newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6213) idev->cnf.disable_ipv6 = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6214) if (changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6215) dev_disable_change(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6220) static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6222) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6223) int old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6225) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6226) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6228) net = (struct net *)table->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6229) old = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6230) *p = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6232) if (p == &net->ipv6.devconf_dflt->disable_ipv6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6233) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6234) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6237) if (p == &net->ipv6.devconf_all->disable_ipv6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6238) net->ipv6.devconf_dflt->disable_ipv6 = newf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6239) addrconf_disable_change(net, newf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6240) } else if ((!newf) ^ (!old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6241) dev_disable_change((struct inet6_dev *)table->extra1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6243) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6244) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6247) static int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6248) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6250) int *valp = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6251) int val = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6252) loff_t pos = *ppos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6253) struct ctl_table lctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6254) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6256) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6257) * ctl->data points to idev->cnf.disable_ipv6, we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6258) * not modify it until we get the rtnl lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6259) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6260) lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6261) lctl.data = &val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6263) ret = proc_dointvec(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6265) if (write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6266) ret = addrconf_disable_ipv6(ctl, valp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6267) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6268) *ppos = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6269) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6272) static int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6273) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6275) int *valp = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6276) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6277) int old, new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6279) old = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6280) ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6281) new = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6283) if (write && old != new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6284) struct net *net = ctl->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6286) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6287) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6289) if (valp == &net->ipv6.devconf_dflt->proxy_ndp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6290) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6291) NETCONFA_PROXY_NEIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6292) NETCONFA_IFINDEX_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6293) net->ipv6.devconf_dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6294) else if (valp == &net->ipv6.devconf_all->proxy_ndp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6295) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6296) NETCONFA_PROXY_NEIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6297) NETCONFA_IFINDEX_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6298) net->ipv6.devconf_all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6299) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6300) struct inet6_dev *idev = ctl->extra1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6302) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6303) NETCONFA_PROXY_NEIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6304) idev->dev->ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6305) &idev->cnf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6307) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6310) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6313) static int addrconf_sysctl_addr_gen_mode(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6314) void *buffer, size_t *lenp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6315) loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6316) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6317) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6318) u32 new_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6319) struct inet6_dev *idev = (struct inet6_dev *)ctl->extra1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6320) struct net *net = (struct net *)ctl->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6321) struct ctl_table tmp = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6322) .data = &new_val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6323) .maxlen = sizeof(new_val),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6324) .mode = ctl->mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6325) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6327) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6328) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6330) new_val = *((u32 *)ctl->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6332) ret = proc_douintvec(&tmp, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6333) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6334) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6336) if (write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6337) if (check_addr_gen_mode(new_val) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6338) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6339) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6342) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6343) if (check_stable_privacy(idev, net, new_val) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6344) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6345) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6348) if (idev->cnf.addr_gen_mode != new_val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6349) idev->cnf.addr_gen_mode = new_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6350) addrconf_dev_config(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6352) } else if (&net->ipv6.devconf_all->addr_gen_mode == ctl->data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6353) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6355) net->ipv6.devconf_dflt->addr_gen_mode = new_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6356) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6357) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6358) if (idev &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6359) idev->cnf.addr_gen_mode != new_val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6360) idev->cnf.addr_gen_mode = new_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6361) addrconf_dev_config(idev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6366) *((u32 *)ctl->data) = new_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6369) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6370) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6372) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6375) static int addrconf_sysctl_stable_secret(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6376) void *buffer, size_t *lenp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6377) loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6379) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6380) struct in6_addr addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6381) char str[IPV6_MAX_STRLEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6382) struct ctl_table lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6383) struct net *net = ctl->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6384) struct ipv6_stable_secret *secret = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6386) if (&net->ipv6.devconf_all->stable_secret == ctl->data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6387) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6389) lctl.maxlen = IPV6_MAX_STRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6390) lctl.data = str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6392) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6393) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6395) if (!write && !secret->initialized) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6396) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6397) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6400) err = snprintf(str, sizeof(str), "%pI6", &secret->secret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6401) if (err >= sizeof(str)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6402) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6403) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6406) err = proc_dostring(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6407) if (err || !write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6408) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6410) if (in6_pton(str, -1, addr.in6_u.u6_addr8, -1, NULL) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6411) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6412) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6415) secret->initialized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6416) secret->secret = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6418) if (&net->ipv6.devconf_dflt->stable_secret == ctl->data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6419) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6421) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6422) struct inet6_dev *idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6424) if (idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6425) idev->cnf.addr_gen_mode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6426) IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6429) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6430) struct inet6_dev *idev = ctl->extra1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6432) idev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6435) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6436) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6438) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6441) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6442) int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6443) int write, void *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6444) size_t *lenp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6445) loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6447) int *valp = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6448) int val = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6449) loff_t pos = *ppos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6450) struct ctl_table lctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6451) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6453) /* ctl->data points to idev->cnf.ignore_routes_when_linkdown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6454) * we should not modify it until we get the rtnl lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6455) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6456) lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6457) lctl.data = &val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6459) ret = proc_dointvec(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6461) if (write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6462) ret = addrconf_fixup_linkdown(ctl, valp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6463) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6464) *ppos = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6465) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6468) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6469) void addrconf_set_nopolicy(struct rt6_info *rt, int action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6471) if (rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6472) if (action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6473) rt->dst.flags |= DST_NOPOLICY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6474) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6475) rt->dst.flags &= ~DST_NOPOLICY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6479) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6480) void addrconf_disable_policy_idev(struct inet6_dev *idev, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6481) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6482) struct inet6_ifaddr *ifa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6484) read_lock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6485) list_for_each_entry(ifa, &idev->addr_list, if_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6486) spin_lock(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6487) if (ifa->rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6488) /* host routes only use builtin fib6_nh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6489) struct fib6_nh *nh = ifa->rt->fib6_nh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6490) int cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6492) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6493) ifa->rt->dst_nopolicy = val ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6494) if (nh->rt6i_pcpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6495) for_each_possible_cpu(cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6496) struct rt6_info **rtp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6498) rtp = per_cpu_ptr(nh->rt6i_pcpu, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6499) addrconf_set_nopolicy(*rtp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6502) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6504) spin_unlock(&ifa->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6506) read_unlock_bh(&idev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6509) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6510) int addrconf_disable_policy(struct ctl_table *ctl, int *valp, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6511) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6512) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6513) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6515) if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6516) return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6518) *valp = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6520) net = (struct net *)ctl->extra2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6521) if (valp == &net->ipv6.devconf_dflt->disable_policy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6522) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6523) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6526) if (valp == &net->ipv6.devconf_all->disable_policy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6527) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6529) for_each_netdev(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6530) idev = __in6_dev_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6531) if (idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6532) addrconf_disable_policy_idev(idev, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6534) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6535) idev = (struct inet6_dev *)ctl->extra1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6536) addrconf_disable_policy_idev(idev, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6539) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6540) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6543) static int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6544) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6546) int *valp = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6547) int val = *valp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6548) loff_t pos = *ppos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6549) struct ctl_table lctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6550) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6552) lctl = *ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6553) lctl.data = &val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6554) ret = proc_dointvec(&lctl, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6556) if (write && (*valp != val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6557) ret = addrconf_disable_policy(ctl, valp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6559) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6560) *ppos = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6562) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6565) static int minus_one = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6566) static const int two_five_five = 255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6568) static const struct ctl_table addrconf_sysctl[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6570) .procname = "forwarding",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6571) .data = &ipv6_devconf.forwarding,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6572) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6573) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6574) .proc_handler = addrconf_sysctl_forward,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6575) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6576) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6577) .procname = "hop_limit",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6578) .data = &ipv6_devconf.hop_limit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6579) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6580) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6581) .proc_handler = proc_dointvec_minmax,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6582) .extra1 = (void *)SYSCTL_ONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6583) .extra2 = (void *)&two_five_five,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6584) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6585) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6586) .procname = "mtu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6587) .data = &ipv6_devconf.mtu6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6588) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6589) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6590) .proc_handler = addrconf_sysctl_mtu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6591) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6593) .procname = "accept_ra",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6594) .data = &ipv6_devconf.accept_ra,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6595) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6596) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6597) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6598) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6599) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6600) .procname = "accept_redirects",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6601) .data = &ipv6_devconf.accept_redirects,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6602) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6603) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6604) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6605) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6607) .procname = "autoconf",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6608) .data = &ipv6_devconf.autoconf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6609) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6610) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6611) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6612) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6614) .procname = "dad_transmits",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6615) .data = &ipv6_devconf.dad_transmits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6616) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6617) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6618) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6619) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6620) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6621) .procname = "router_solicitations",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6622) .data = &ipv6_devconf.rtr_solicits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6623) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6624) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6625) .proc_handler = proc_dointvec_minmax,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6626) .extra1 = &minus_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6627) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6629) .procname = "router_solicitation_interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6630) .data = &ipv6_devconf.rtr_solicit_interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6631) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6632) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6633) .proc_handler = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6634) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6636) .procname = "router_solicitation_max_interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6637) .data = &ipv6_devconf.rtr_solicit_max_interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6638) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6639) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6640) .proc_handler = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6641) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6642) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6643) .procname = "router_solicitation_delay",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6644) .data = &ipv6_devconf.rtr_solicit_delay,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6645) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6646) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6647) .proc_handler = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6648) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6650) .procname = "force_mld_version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6651) .data = &ipv6_devconf.force_mld_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6652) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6653) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6654) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6655) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6656) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6657) .procname = "mldv1_unsolicited_report_interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6658) .data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6659) &ipv6_devconf.mldv1_unsolicited_report_interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6660) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6661) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6662) .proc_handler = proc_dointvec_ms_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6663) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6665) .procname = "mldv2_unsolicited_report_interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6666) .data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6667) &ipv6_devconf.mldv2_unsolicited_report_interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6668) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6669) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6670) .proc_handler = proc_dointvec_ms_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6671) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6672) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6673) .procname = "use_tempaddr",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6674) .data = &ipv6_devconf.use_tempaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6675) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6676) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6677) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6678) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6680) .procname = "temp_valid_lft",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6681) .data = &ipv6_devconf.temp_valid_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6682) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6683) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6684) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6685) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6686) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6687) .procname = "temp_prefered_lft",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6688) .data = &ipv6_devconf.temp_prefered_lft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6689) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6690) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6691) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6692) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6693) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6694) .procname = "regen_max_retry",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6695) .data = &ipv6_devconf.regen_max_retry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6696) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6697) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6698) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6699) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6701) .procname = "max_desync_factor",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6702) .data = &ipv6_devconf.max_desync_factor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6703) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6704) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6705) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6706) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6707) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6708) .procname = "max_addresses",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6709) .data = &ipv6_devconf.max_addresses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6710) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6711) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6712) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6713) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6714) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6715) .procname = "accept_ra_defrtr",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6716) .data = &ipv6_devconf.accept_ra_defrtr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6717) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6718) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6719) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6720) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6721) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6722) .procname = "accept_ra_min_hop_limit",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6723) .data = &ipv6_devconf.accept_ra_min_hop_limit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6724) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6725) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6726) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6727) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6728) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6729) .procname = "accept_ra_pinfo",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6730) .data = &ipv6_devconf.accept_ra_pinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6731) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6732) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6733) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6734) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6735) #ifdef CONFIG_IPV6_ROUTER_PREF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6737) .procname = "accept_ra_rtr_pref",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6738) .data = &ipv6_devconf.accept_ra_rtr_pref,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6739) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6740) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6741) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6742) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6743) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6744) .procname = "router_probe_interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6745) .data = &ipv6_devconf.rtr_probe_interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6746) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6747) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6748) .proc_handler = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6749) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6750) #ifdef CONFIG_IPV6_ROUTE_INFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6751) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6752) .procname = "accept_ra_rt_info_min_plen",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6753) .data = &ipv6_devconf.accept_ra_rt_info_min_plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6754) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6755) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6756) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6757) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6758) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6759) .procname = "accept_ra_rt_info_max_plen",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6760) .data = &ipv6_devconf.accept_ra_rt_info_max_plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6761) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6762) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6763) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6764) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6765) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6766) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6767) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6768) .procname = "accept_ra_rt_table",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6769) .data = &ipv6_devconf.accept_ra_rt_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6770) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6771) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6772) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6773) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6774) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6775) .procname = "proxy_ndp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6776) .data = &ipv6_devconf.proxy_ndp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6777) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6778) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6779) .proc_handler = addrconf_sysctl_proxy_ndp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6780) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6781) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6782) .procname = "accept_source_route",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6783) .data = &ipv6_devconf.accept_source_route,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6784) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6785) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6786) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6787) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6788) #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6789) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6790) .procname = "optimistic_dad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6791) .data = &ipv6_devconf.optimistic_dad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6792) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6793) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6794) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6795) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6796) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6797) .procname = "use_optimistic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6798) .data = &ipv6_devconf.use_optimistic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6799) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6800) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6801) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6802) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6803) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6804) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6805) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6806) .procname = "mc_forwarding",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6807) .data = &ipv6_devconf.mc_forwarding,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6808) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6809) .mode = 0444,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6810) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6811) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6812) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6813) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6814) .procname = "disable_ipv6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6815) .data = &ipv6_devconf.disable_ipv6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6816) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6817) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6818) .proc_handler = addrconf_sysctl_disable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6819) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6820) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6821) .procname = "accept_dad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6822) .data = &ipv6_devconf.accept_dad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6823) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6824) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6825) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6826) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6827) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6828) .procname = "force_tllao",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6829) .data = &ipv6_devconf.force_tllao,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6830) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6831) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6832) .proc_handler = proc_dointvec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6833) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6834) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6835) .procname = "ndisc_notify",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6836) .data = &ipv6_devconf.ndisc_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6837) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6838) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6839) .proc_handler = proc_dointvec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6840) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6841) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6842) .procname = "suppress_frag_ndisc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6843) .data = &ipv6_devconf.suppress_frag_ndisc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6844) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6845) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6846) .proc_handler = proc_dointvec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6847) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6848) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6849) .procname = "accept_ra_from_local",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6850) .data = &ipv6_devconf.accept_ra_from_local,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6851) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6852) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6853) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6854) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6855) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6856) .procname = "accept_ra_mtu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6857) .data = &ipv6_devconf.accept_ra_mtu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6858) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6859) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6860) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6861) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6862) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6863) .procname = "stable_secret",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6864) .data = &ipv6_devconf.stable_secret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6865) .maxlen = IPV6_MAX_STRLEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6866) .mode = 0600,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6867) .proc_handler = addrconf_sysctl_stable_secret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6868) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6869) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6870) .procname = "use_oif_addrs_only",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6871) .data = &ipv6_devconf.use_oif_addrs_only,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6872) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6873) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6874) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6875) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6877) .procname = "ignore_routes_with_linkdown",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6878) .data = &ipv6_devconf.ignore_routes_with_linkdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6879) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6880) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6881) .proc_handler = addrconf_sysctl_ignore_routes_with_linkdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6882) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6884) .procname = "drop_unicast_in_l2_multicast",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6885) .data = &ipv6_devconf.drop_unicast_in_l2_multicast,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6886) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6887) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6888) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6889) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6890) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6891) .procname = "drop_unsolicited_na",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6892) .data = &ipv6_devconf.drop_unsolicited_na,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6893) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6894) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6895) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6896) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6898) .procname = "keep_addr_on_down",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6899) .data = &ipv6_devconf.keep_addr_on_down,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6900) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6901) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6902) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6904) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6906) .procname = "seg6_enabled",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6907) .data = &ipv6_devconf.seg6_enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6908) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6909) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6910) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6911) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6912) #ifdef CONFIG_IPV6_SEG6_HMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6913) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6914) .procname = "seg6_require_hmac",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6915) .data = &ipv6_devconf.seg6_require_hmac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6916) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6917) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6918) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6919) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6920) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6921) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6922) .procname = "enhanced_dad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6923) .data = &ipv6_devconf.enhanced_dad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6924) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6925) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6926) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6927) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6928) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6929) .procname = "addr_gen_mode",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6930) .data = &ipv6_devconf.addr_gen_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6931) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6932) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6933) .proc_handler = addrconf_sysctl_addr_gen_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6934) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6936) .procname = "disable_policy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6937) .data = &ipv6_devconf.disable_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6938) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6939) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6940) .proc_handler = addrconf_sysctl_disable_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6941) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6942) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6943) .procname = "ndisc_tclass",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6944) .data = &ipv6_devconf.ndisc_tclass,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6945) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6946) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6947) .proc_handler = proc_dointvec_minmax,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6948) .extra1 = (void *)SYSCTL_ZERO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6949) .extra2 = (void *)&two_five_five,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6950) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6951) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6952) .procname = "rpl_seg_enabled",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6953) .data = &ipv6_devconf.rpl_seg_enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6954) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6955) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6956) .proc_handler = proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6957) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6959) /* sentinel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6960) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6961) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6963) static int __addrconf_sysctl_register(struct net *net, char *dev_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6964) struct inet6_dev *idev, struct ipv6_devconf *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6965) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6966) int i, ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6967) struct ctl_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6968) char path[sizeof("net/ipv6/conf/") + IFNAMSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6970) table = kmemdup(addrconf_sysctl, sizeof(addrconf_sysctl), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6971) if (!table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6972) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6974) for (i = 0; table[i].data; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6975) table[i].data += (char *)p - (char *)&ipv6_devconf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6976) /* If one of these is already set, then it is not safe to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6977) * overwrite either of them: this makes proc_dointvec_minmax
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6978) * usable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6979) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6980) if (!table[i].extra1 && !table[i].extra2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6981) table[i].extra1 = idev; /* embedded; no ref */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6982) table[i].extra2 = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6986) snprintf(path, sizeof(path), "net/ipv6/conf/%s", dev_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6988) p->sysctl_header = register_net_sysctl(net, path, table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6989) if (!p->sysctl_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6990) goto free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6992) if (!strcmp(dev_name, "all"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6993) ifindex = NETCONFA_IFINDEX_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6994) else if (!strcmp(dev_name, "default"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6995) ifindex = NETCONFA_IFINDEX_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6996) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6997) ifindex = idev->dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6998) inet6_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6999) ifindex, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7000) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7002) free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7003) kfree(table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7004) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7005) return -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7008) static void __addrconf_sysctl_unregister(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7009) struct ipv6_devconf *p, int ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7010) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7011) struct ctl_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7013) if (!p->sysctl_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7014) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7016) table = p->sysctl_header->ctl_table_arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7017) unregister_net_sysctl_table(p->sysctl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7018) p->sysctl_header = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7019) kfree(table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7021) inet6_netconf_notify_devconf(net, RTM_DELNETCONF, 0, ifindex, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7024) static int addrconf_sysctl_register(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7025) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7026) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7028) if (!sysctl_dev_name_is_allowed(idev->dev->name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7029) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7031) err = neigh_sysctl_register(idev->dev, idev->nd_parms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7032) &ndisc_ifinfo_sysctl_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7033) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7034) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7035) err = __addrconf_sysctl_register(dev_net(idev->dev), idev->dev->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7036) idev, &idev->cnf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7037) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7038) neigh_sysctl_unregister(idev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7040) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7043) static void addrconf_sysctl_unregister(struct inet6_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7044) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7045) __addrconf_sysctl_unregister(dev_net(idev->dev), &idev->cnf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7046) idev->dev->ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7047) neigh_sysctl_unregister(idev->nd_parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7051) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7053) static int __net_init addrconf_init_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7054) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7055) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7056) struct ipv6_devconf *all, *dflt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7058) all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7059) if (!all)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7060) goto err_alloc_all;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7062) dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7063) if (!dflt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7064) goto err_alloc_dflt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7066) if (IS_ENABLED(CONFIG_SYSCTL) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7067) !net_eq(net, &init_net)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7068) switch (sysctl_devconf_inherit_init_net) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7069) case 1: /* copy from init_net */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7070) memcpy(all, init_net.ipv6.devconf_all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7071) sizeof(ipv6_devconf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7072) memcpy(dflt, init_net.ipv6.devconf_dflt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7073) sizeof(ipv6_devconf_dflt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7074) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7075) case 3: /* copy from the current netns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7076) memcpy(all, current->nsproxy->net_ns->ipv6.devconf_all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7077) sizeof(ipv6_devconf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7078) memcpy(dflt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7079) current->nsproxy->net_ns->ipv6.devconf_dflt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7080) sizeof(ipv6_devconf_dflt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7081) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7082) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7083) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7084) /* use compiled values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7085) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7086) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7089) /* these will be inherited by all namespaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7090) dflt->autoconf = ipv6_defaults.autoconf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7091) dflt->disable_ipv6 = ipv6_defaults.disable_ipv6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7093) dflt->stable_secret.initialized = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7094) all->stable_secret.initialized = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7096) net->ipv6.devconf_all = all;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7097) net->ipv6.devconf_dflt = dflt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7099) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7100) err = __addrconf_sysctl_register(net, "all", NULL, all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7101) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7102) goto err_reg_all;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7104) err = __addrconf_sysctl_register(net, "default", NULL, dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7105) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7106) goto err_reg_dflt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7107) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7108) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7110) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7111) err_reg_dflt:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7112) __addrconf_sysctl_unregister(net, all, NETCONFA_IFINDEX_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7113) err_reg_all:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7114) kfree(dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7115) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7116) err_alloc_dflt:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7117) kfree(all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7118) err_alloc_all:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7119) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7122) static void __net_exit addrconf_exit_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7124) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7125) __addrconf_sysctl_unregister(net, net->ipv6.devconf_dflt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7126) NETCONFA_IFINDEX_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7127) __addrconf_sysctl_unregister(net, net->ipv6.devconf_all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7128) NETCONFA_IFINDEX_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7129) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7130) kfree(net->ipv6.devconf_dflt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7131) kfree(net->ipv6.devconf_all);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7134) static struct pernet_operations addrconf_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7135) .init = addrconf_init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7136) .exit = addrconf_exit_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7139) static struct rtnl_af_ops inet6_ops __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7140) .family = AF_INET6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7141) .fill_link_af = inet6_fill_link_af,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7142) .get_link_af_size = inet6_get_link_af_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7143) .validate_link_af = inet6_validate_link_af,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7144) .set_link_af = inet6_set_link_af,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7145) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7148) * Init / cleanup code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7151) int __init addrconf_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7153) struct inet6_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7154) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7156) err = ipv6_addr_label_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7157) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7158) pr_crit("%s: cannot initialize default policy table: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7159) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7160) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7163) err = register_pernet_subsys(&addrconf_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7164) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7165) goto out_addrlabel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7167) addrconf_wq = create_workqueue("ipv6_addrconf");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7168) if (!addrconf_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7169) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7170) goto out_nowq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7173) /* The addrconf netdev notifier requires that loopback_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7174) * has it's ipv6 private information allocated and setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7175) * before it can bring up and give link-local addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7176) * to other devices which are up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7177) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7178) * Unfortunately, loopback_dev is not necessarily the first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7179) * entry in the global dev_base list of net devices. In fact,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7180) * it is likely to be the very last entry on that list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7181) * So this causes the notifier registry below to try and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7182) * give link-local addresses to all devices besides loopback_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7183) * first, then loopback_dev, which cases all the non-loopback_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7184) * devices to fail to get a link-local address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7185) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7186) * So, as a temporary fix, allocate the ipv6 structure for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7187) * loopback_dev first by hand.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7188) * Longer term, all of the dependencies ipv6 has upon the loopback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7189) * device and it being up should be removed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7191) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7192) idev = ipv6_add_dev(init_net.loopback_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7193) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7194) if (IS_ERR(idev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7195) err = PTR_ERR(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7196) goto errlo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7199) ip6_route_init_special_entries();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7201) for (i = 0; i < IN6_ADDR_HSIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7202) INIT_HLIST_HEAD(&inet6_addr_lst[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7204) register_netdevice_notifier(&ipv6_dev_notf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7206) addrconf_verify();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7208) rtnl_af_register(&inet6_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7210) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETLINK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7211) NULL, inet6_dump_ifinfo, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7212) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7213) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7215) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_NEWADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7216) inet6_rtm_newaddr, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7217) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7218) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7219) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_DELADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7220) inet6_rtm_deladdr, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7221) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7222) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7223) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7224) inet6_rtm_getaddr, inet6_dump_ifaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7225) RTNL_FLAG_DOIT_UNLOCKED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7226) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7227) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7228) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETMULTICAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7229) NULL, inet6_dump_ifmcaddr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7230) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7231) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7232) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETANYCAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7233) NULL, inet6_dump_ifacaddr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7234) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7235) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7236) err = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETNETCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7237) inet6_netconf_get_devconf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7238) inet6_netconf_dump_devconf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7239) RTNL_FLAG_DOIT_UNLOCKED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7240) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7241) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7242) err = ipv6_addr_label_rtnl_register();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7243) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7244) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7247) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7248) rtnl_unregister_all(PF_INET6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7249) rtnl_af_unregister(&inet6_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7250) unregister_netdevice_notifier(&ipv6_dev_notf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7251) errlo:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7252) destroy_workqueue(addrconf_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7253) out_nowq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7254) unregister_pernet_subsys(&addrconf_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7255) out_addrlabel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7256) ipv6_addr_label_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7257) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7258) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7261) void addrconf_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7263) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7264) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7266) unregister_netdevice_notifier(&ipv6_dev_notf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7267) unregister_pernet_subsys(&addrconf_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7268) ipv6_addr_label_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7270) rtnl_af_unregister(&inet6_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7272) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7274) /* clean dev list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7275) for_each_netdev(&init_net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7276) if (__in6_dev_get(dev) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7277) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7278) addrconf_ifdown(dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7280) addrconf_ifdown(init_net.loopback_dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7282) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7283) * Check hash table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7285) spin_lock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7286) for (i = 0; i < IN6_ADDR_HSIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7287) WARN_ON(!hlist_empty(&inet6_addr_lst[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7288) spin_unlock_bh(&addrconf_hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7289) cancel_delayed_work(&addr_chk_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7290) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7292) destroy_workqueue(addrconf_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7293) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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