^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) * RAW sockets for IPv6
^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) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Adapted from linux/net/ipv4/raw.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Fixes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Hideaki YOSHIFUJI : sin6_scope_id support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * YOSHIFUJI,H.@USAGI : raw checksum (RFC2292(bis) compliance)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sockios.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/icmpv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/netfilter.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/netfilter_ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/ioctls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <net/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <net/snmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <net/ndisc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <net/protocol.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <net/ip6_route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <net/ip6_checksum.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <net/addrconf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <net/transp_v6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <net/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <net/inet_common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <net/tcp_states.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #if IS_ENABLED(CONFIG_IPV6_MIP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <net/mip6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/mroute6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <net/raw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <net/rawv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <net/xfrm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define ICMPV6_HDRLEN 4 /* ICMPv6 header, RFC 4443 Section 2.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct raw_hashinfo raw_v6_hashinfo = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .lock = __RW_LOCK_UNLOCKED(raw_v6_hashinfo.lock),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) EXPORT_SYMBOL_GPL(raw_v6_hashinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned short num, const struct in6_addr *loc_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) const struct in6_addr *rmt_addr, int dif, int sdif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) bool is_multicast = ipv6_addr_is_multicast(loc_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) sk_for_each_from(sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (inet_sk(sk)->inet_num == num) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (!net_eq(sock_net(sk), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!ipv6_addr_any(&sk->sk_v6_daddr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (!raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) dif, sdif))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) goto found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (is_multicast &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) inet6_mc_check(sk, loc_addr, rmt_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) goto found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) goto found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) found:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) EXPORT_SYMBOL_GPL(__raw_v6_lookup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * 0 - deliver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * 1 - block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static int icmpv6_filter(const struct sock *sk, const struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct icmp6hdr _hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) const struct icmp6hdr *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* We require only the four bytes of the ICMPv6 header, not any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * additional bytes of message body in "struct icmp6hdr".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) hdr = skb_header_pointer(skb, skb_transport_offset(skb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ICMPV6_HDRLEN, &_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (hdr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) const __u32 *data = &raw6_sk(sk)->filter.data[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) unsigned int type = hdr->icmp6_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return (data[type >> 5] & (1U << (type & 31))) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #if IS_ENABLED(CONFIG_IPV6_MIP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) typedef int mh_filter_t(struct sock *sock, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static mh_filter_t __rcu *mh_filter __read_mostly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int rawv6_mh_filter_register(mh_filter_t filter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) rcu_assign_pointer(mh_filter, filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) EXPORT_SYMBOL(rawv6_mh_filter_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int rawv6_mh_filter_unregister(mh_filter_t filter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) RCU_INIT_POINTER(mh_filter, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) synchronize_rcu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) EXPORT_SYMBOL(rawv6_mh_filter_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * demultiplex raw sockets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * (should consider queueing the skb in the sock receive_queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * without calling rawv6.c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * Caller owns SKB so we must make clones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) const struct in6_addr *saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) const struct in6_addr *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) bool delivered = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) __u8 hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) saddr = &ipv6_hdr(skb)->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) daddr = saddr + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) hash = nexthdr & (RAW_HTABLE_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) read_lock(&raw_v6_hashinfo.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) sk = sk_head(&raw_v6_hashinfo.ht[hash]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) net = dev_net(skb->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) inet6_iif(skb), inet6_sdif(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) while (sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int filtered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) delivered = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) switch (nexthdr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) case IPPROTO_ICMPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) filtered = icmpv6_filter(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #if IS_ENABLED(CONFIG_IPV6_MIP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case IPPROTO_MH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /* XXX: To validate MH only once for each packet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * this is placed here. It should be after checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * xfrm policy, however it doesn't. The checking xfrm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * policy is placed in rawv6_rcv() because it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * required for each socket.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) mh_filter_t *filter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) filter = rcu_dereference(mh_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) filtered = filter ? (*filter)(sk, skb) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) filtered = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (filtered < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (filtered == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* Not releasing hash table! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (clone) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) nf_reset_ct(clone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) rawv6_rcv(sk, clone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) inet6_iif(skb), inet6_sdif(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) read_unlock(&raw_v6_hashinfo.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return delivered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) bool raw6_local_deliver(struct sk_buff *skb, int nexthdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct sock *raw_sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (RAW_HTABLE_SIZE - 1)]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) raw_sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return raw_sk != NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* This cleans up af_inet6 a bit. -DaveM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) __be32 v4addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int addr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (addr_len < SIN6_LEN_RFC2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (addr->sin6_family != AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) addr_type = ipv6_addr_type(&addr->sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* Raw sockets are IPv6 only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (addr_type == IPV6_ADDR_MAPPED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (sk->sk_state != TCP_CLOSE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) /* Check if the address belongs to the host. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (addr_type != IPV6_ADDR_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) struct net_device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (__ipv6_addr_needs_scope_id(addr_type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (addr_len >= sizeof(struct sockaddr_in6) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) addr->sin6_scope_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* Override any existing binding, if another
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * one is supplied by user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) sk->sk_bound_dev_if = addr->sin6_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /* Binding to link-local address requires an interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (!sk->sk_bound_dev_if)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (sk->sk_bound_dev_if) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) dev = dev_get_by_index_rcu(sock_net(sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) sk->sk_bound_dev_if);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /* ipv4 addr of the socket is invalid. Only the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * unspecified and mapped address have a v4 equivalent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) v4addr = LOOPBACK4_IPV6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (!(addr_type & IPV6_ADDR_MULTICAST) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) !ipv6_can_nonlocal_bind(sock_net(sk), inet)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) err = -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) dev, 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) inet->inet_rcv_saddr = inet->inet_saddr = v4addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) sk->sk_v6_rcv_saddr = addr->sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (!(addr_type & IPV6_ADDR_MULTICAST))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) np->saddr = addr->sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static void rawv6_err(struct sock *sk, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct inet6_skb_parm *opt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) u8 type, u8 code, int offset, __be32 info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) int harderr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* Report error on raw socket, if:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 1. User requested recverr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 2. Socket is connected (otherwise the error indication
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) is useless without recverr and error is hard.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) harderr = icmpv6_err_convert(type, code, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (type == ICMPV6_PKT_TOOBIG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ip6_sk_update_pmtu(skb, sk, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (type == NDISC_REDIRECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ip6_sk_redirect(skb, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (np->recverr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) u8 *payload = skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (!inet->hdrincl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) payload += offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (np->recverr || harderr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) sk->sk_err = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) sk->sk_error_report(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) u8 type, u8 code, int inner_offset, __be32 info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) int hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) const struct in6_addr *saddr, *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) hash = nexthdr & (RAW_HTABLE_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) read_lock(&raw_v6_hashinfo.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) sk = sk_head(&raw_v6_hashinfo.ht[hash]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) /* Note: ipv6_hdr(skb) != skb->data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) saddr = &ip6h->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) daddr = &ip6h->daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) net = dev_net(skb->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) inet6_iif(skb), inet6_iif(skb)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) rawv6_err(sk, skb, NULL, type, code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) inner_offset, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) sk = sk_next(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) read_unlock(&raw_v6_hashinfo.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) skb_checksum_complete(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) atomic_inc(&sk->sk_drops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) return NET_RX_DROP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) /* Charge it to the socket. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) skb_dst_drop(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (sock_queue_rcv_skb(sk, skb) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return NET_RX_DROP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) * This is next to useless...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * if we demultiplex in network layer we don't need the extra call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * just to queue the skb...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * maybe we could have the network decide upon a hint if it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * should call raw_rcv for demultiplexing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) struct raw6_sock *rp = raw6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) atomic_inc(&sk->sk_drops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return NET_RX_DROP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (!rp->checksum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) skb->ip_summed = CHECKSUM_UNNECESSARY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (skb->ip_summed == CHECKSUM_COMPLETE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) skb_postpull_rcsum(skb, skb_network_header(skb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) skb_network_header_len(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) &ipv6_hdr(skb)->daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) skb->len, inet->inet_num, skb->csum))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) skb->ip_summed = CHECKSUM_UNNECESSARY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (!skb_csum_unnecessary(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) &ipv6_hdr(skb)->daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) skb->len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) inet->inet_num, 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (inet->hdrincl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (skb_checksum_complete(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) atomic_inc(&sk->sk_drops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return NET_RX_DROP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) rawv6_rcv_skb(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * This should be easy, if there is something there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * we return it, otherwise we block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) static int rawv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) int noblock, int flags, int *addr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) size_t copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (flags & MSG_OOB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (flags & MSG_ERRQUEUE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) return ipv6_recv_error(sk, msg, len, addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (np->rxpmtu && np->rxopt.bits.rxpmtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return ipv6_recv_rxpmtu(sk, msg, len, addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) skb = skb_recv_datagram(sk, flags, noblock, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) copied = skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (copied > len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) copied = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) msg->msg_flags |= MSG_TRUNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (skb_csum_unnecessary(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) err = skb_copy_datagram_msg(skb, 0, msg, copied);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) } else if (msg->msg_flags&MSG_TRUNC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (__skb_checksum_complete(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) goto csum_copy_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) err = skb_copy_datagram_msg(skb, 0, msg, copied);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) err = skb_copy_and_csum_datagram_msg(skb, 0, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (err == -EINVAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) goto csum_copy_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* Copy the address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (sin6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) sin6->sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) sin6->sin6_port = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) sin6->sin6_addr = ipv6_hdr(skb)->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) sin6->sin6_flowinfo = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) inet6_iif(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) *addr_len = sizeof(*sin6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) sock_recv_ts_and_drops(msg, sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (np->rxopt.all)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ip6_datagram_recv_ctl(sk, msg, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) err = copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (flags & MSG_TRUNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) err = skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) skb_free_datagram(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) csum_copy_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) skb_kill_datagram(sk, skb, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /* Error for blocking case is chosen to masquerade
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) as some normal condition.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct raw6_sock *rp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) __wsum tmp_csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) __sum16 csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (!rp->checksum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) goto send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) skb = skb_peek(&sk->sk_write_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) offset = rp->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) total_len = inet_sk(sk)->cork.base.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (offset >= total_len - 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) ip6_flush_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /* should be check HW csum miyazawa */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (skb_queue_len(&sk->sk_write_queue) == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * Only one fragment on the socket.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) tmp_csum = skb->csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) struct sk_buff *csum_skb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) tmp_csum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) skb_queue_walk(&sk->sk_write_queue, skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) tmp_csum = csum_add(tmp_csum, skb->csum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (csum_skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) len = skb->len - skb_transport_offset(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (offset >= len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) offset -= len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) csum_skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) skb = csum_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) offset += skb_transport_offset(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) err = skb_copy_bits(skb, offset, &csum, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) ip6_flush_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /* in case cksum was not initialized */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (unlikely(csum))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) csum = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) total_len, fl6->flowi6_proto, tmp_csum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (csum == 0 && fl6->flowi6_proto == IPPROTO_UDP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) csum = CSUM_MANGLED_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) BUG_ON(skb_store_bits(skb, offset, &csum, 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) send:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) err = ip6_push_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) struct flowi6 *fl6, struct dst_entry **dstp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) unsigned int flags, const struct sockcm_cookie *sockc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) struct net *net = sock_net(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct ipv6hdr *iph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) struct rt6_info *rt = (struct rt6_info *)*dstp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) int hlen = LL_RESERVED_SPACE(rt->dst.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) int tlen = rt->dst.dev->needed_tailroom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (length > rt->dst.dev->mtu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) ipv6_local_error(sk, EMSGSIZE, fl6, rt->dst.dev->mtu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (length < sizeof(struct ipv6hdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (flags&MSG_PROBE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) skb = sock_alloc_send_skb(sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) length + hlen + tlen + 15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) flags & MSG_DONTWAIT, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) skb_reserve(skb, hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) skb->protocol = htons(ETH_P_IPV6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) skb->priority = sk->sk_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) skb->mark = sockc->mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) skb->tstamp = sockc->transmit_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) skb_put(skb, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) iph = ipv6_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) skb->ip_summed = CHECKSUM_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) skb_setup_tx_timestamp(skb, sockc->tsflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (flags & MSG_CONFIRM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) skb_set_dst_pending_confirm(skb, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) skb->transport_header = skb->network_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) err = memcpy_from_msg(iph, msg, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) skb_dst_set(skb, &rt->dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) *dstp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* if egress device is enslaved to an L3 master device pass the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * skb to its handler for processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) skb = l3mdev_ip6_out(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) if (unlikely(!skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) /* Acquire rcu_read_lock() in case we need to use rt->rt6i_idev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * in the error path. Since skb has been freed, the dst could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * have been queued for deletion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, sk, skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) NULL, rt->dst.dev, dst_output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) err = net_xmit_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) IP6_INC_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) goto error_check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) IP6_INC_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) error_check:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (err == -ENOBUFS && !np->recverr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) struct raw6_frag_vec {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) struct msghdr *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) int hlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) char c[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) static int rawv6_probe_proto_opt(struct raw6_frag_vec *rfv, struct flowi6 *fl6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) switch (fl6->flowi6_proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) case IPPROTO_ICMPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) rfv->hlen = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) err = memcpy_from_msg(rfv->c, rfv->msg, rfv->hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) fl6->fl6_icmp_type = rfv->c[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) fl6->fl6_icmp_code = rfv->c[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) case IPPROTO_MH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) rfv->hlen = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) err = memcpy_from_msg(rfv->c, rfv->msg, rfv->hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) fl6->fl6_mh_type = rfv->c[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) static int raw6_getfrag(void *from, char *to, int offset, int len, int odd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) struct raw6_frag_vec *rfv = from;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (offset < rfv->hlen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) int copy = min(rfv->hlen - offset, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (skb->ip_summed == CHECKSUM_PARTIAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) memcpy(to, rfv->c + offset, copy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) skb->csum = csum_block_add(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) skb->csum,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) csum_partial_copy_nocheck(rfv->c + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) to, copy),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) odd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) odd = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) offset += copy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) to += copy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) len -= copy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) if (!len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) offset -= rfv->hlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) return ip_generic_getfrag(rfv->msg, to, offset, len, odd, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) struct ipv6_txoptions *opt_to_free = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) struct ipv6_txoptions opt_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct in6_addr *daddr, *final_p, final;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) struct raw6_sock *rp = raw6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) struct ipv6_txoptions *opt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) struct ip6_flowlabel *flowlabel = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) struct dst_entry *dst = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) struct raw6_frag_vec rfv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) struct flowi6 fl6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct ipcm6_cookie ipc6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) int addr_len = msg->msg_namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) int hdrincl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) u16 proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) /* Rough check on arithmetic overflow,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) better check is made in ip6_append_data().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (len > INT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) /* Mirror BSD error message compatibility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (msg->msg_flags & MSG_OOB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) /* hdrincl should be READ_ONCE(inet->hdrincl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) * but READ_ONCE() doesn't work with bit fields.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * Doing this indirectly yields the same result.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) hdrincl = inet->hdrincl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) hdrincl = READ_ONCE(hdrincl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * Get and verify the address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) memset(&fl6, 0, sizeof(fl6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) fl6.flowi6_mark = sk->sk_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) fl6.flowi6_uid = sk->sk_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) ipcm6_init(&ipc6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) ipc6.sockc.tsflags = sk->sk_tsflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) ipc6.sockc.mark = sk->sk_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (sin6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (addr_len < SIN6_LEN_RFC2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) /* port is the proto value [0..255] carried in nexthdr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) proto = ntohs(sin6->sin6_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) if (!proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) proto = inet->inet_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) else if (proto != inet->inet_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (proto > 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) daddr = &sin6->sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (np->sndflow) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (IS_ERR(flowlabel))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) return -EINVAL;
^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) * Otherwise it will be difficult to maintain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * sk->sk_dst_cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (sk->sk_state == TCP_ESTABLISHED &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) daddr = &sk->sk_v6_daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) if (addr_len >= sizeof(struct sockaddr_in6) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) sin6->sin6_scope_id &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) __ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) fl6.flowi6_oif = sin6->sin6_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) if (sk->sk_state != TCP_ESTABLISHED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) return -EDESTADDRREQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) proto = inet->inet_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) daddr = &sk->sk_v6_daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) fl6.flowlabel = np->flow_label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) if (fl6.flowi6_oif == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) fl6.flowi6_oif = sk->sk_bound_dev_if;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) if (msg->msg_controllen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) opt = &opt_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) memset(opt, 0, sizeof(struct ipv6_txoptions));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) opt->tot_len = sizeof(struct ipv6_txoptions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) ipc6.opt = opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) fl6_sock_release(flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (IS_ERR(flowlabel))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) if (!(opt->opt_nflen|opt->opt_flen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) opt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) if (!opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) opt = txopt_get(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) opt_to_free = opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (flowlabel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) opt = fl6_merge_options(&opt_space, flowlabel, opt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) opt = ipv6_fixup_options(&opt_space, opt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) fl6.flowi6_proto = proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) fl6.flowi6_mark = ipc6.sockc.mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) if (!hdrincl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) rfv.msg = msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) rfv.hlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) err = rawv6_probe_proto_opt(&rfv, &fl6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (!ipv6_addr_any(daddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) fl6.daddr = *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) fl6.saddr = np->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) final_p = fl6_update_dst(&fl6, opt, &final);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) fl6.flowi6_oif = np->mcast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) else if (!fl6.flowi6_oif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) fl6.flowi6_oif = np->ucast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) if (hdrincl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) if (ipc6.tclass < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) ipc6.tclass = np->tclass;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) dst = ip6_dst_lookup_flow(sock_net(sk), sk, &fl6, final_p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) if (IS_ERR(dst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) err = PTR_ERR(dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) if (ipc6.hlimit < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (ipc6.dontfrag < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) ipc6.dontfrag = np->dontfrag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) if (msg->msg_flags&MSG_CONFIRM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) goto do_confirm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) back_from_confirm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (hdrincl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) msg->msg_flags, &ipc6.sockc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) ipc6.opt = opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) err = ip6_append_data(sk, raw6_getfrag, &rfv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) len, 0, &ipc6, &fl6, (struct rt6_info *)dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) msg->msg_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) ip6_flush_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) else if (!(msg->msg_flags & MSG_MORE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) err = rawv6_push_pending_frames(sk, &fl6, rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) dst_release(dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) fl6_sock_release(flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) txopt_put(opt_to_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) return err < 0 ? err : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) do_confirm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) if (msg->msg_flags & MSG_PROBE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) dst_confirm_neigh(dst, &fl6.daddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (!(msg->msg_flags & MSG_PROBE) || len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) goto back_from_confirm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) sockptr_t optval, int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) case ICMPV6_FILTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) if (optlen > sizeof(struct icmp6_filter))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) optlen = sizeof(struct icmp6_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) if (copy_from_sockptr(&raw6_sk(sk)->filter, optval, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) case ICMPV6_FILTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (get_user(len, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) if (len < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (len > sizeof(struct icmp6_filter))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) len = sizeof(struct icmp6_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (put_user(len, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) sockptr_t optval, unsigned int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) struct raw6_sock *rp = raw6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (optlen < sizeof(val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (copy_from_sockptr(&val, optval, sizeof(val)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) case IPV6_HDRINCL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) if (sk->sk_type != SOCK_RAW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) inet_sk(sk)->hdrincl = !!val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) case IPV6_CHECKSUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (inet_sk(sk)->inet_num == IPPROTO_ICMPV6 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) level == IPPROTO_IPV6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) * RFC3542 tells that IPV6_CHECKSUM socket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) * option in the IPPROTO_IPV6 level is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) * allowed on ICMPv6 sockets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) * If you want to set it, use IPPROTO_RAW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) * level IPV6_CHECKSUM socket option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) * (Linux extension).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) /* You may get strange result with a positive odd offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) RFC2292bis agrees with me. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) if (val > 0 && (val&1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) if (val < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) rp->checksum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) rp->checksum = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) rp->offset = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) static int rawv6_setsockopt(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) sockptr_t optval, unsigned int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) switch (level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) case SOL_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) case SOL_ICMPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) case SOL_IPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) if (optname == IPV6_CHECKSUM ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) optname == IPV6_HDRINCL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) return ipv6_setsockopt(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) struct raw6_sock *rp = raw6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) int val, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) if (get_user(len, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) case IPV6_HDRINCL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) val = inet_sk(sk)->hdrincl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) case IPV6_CHECKSUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) * We allow getsockopt() for IPPROTO_IPV6-level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) * IPV6_CHECKSUM socket option on ICMPv6 sockets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) * since RFC3542 is silent about it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) if (rp->checksum == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) val = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) val = rp->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) len = min_t(unsigned int, sizeof(int), len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) if (put_user(len, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) if (copy_to_user(optval, &val, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) static int rawv6_getsockopt(struct sock *sk, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) switch (level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) case SOL_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) case SOL_ICMPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) case SOL_IPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if (optname == IPV6_CHECKSUM ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) optname == IPV6_HDRINCL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) return ipv6_getsockopt(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) case SIOCOUTQ: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) int amount = sk_wmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) return put_user(amount, (int __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) case SIOCINQ: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) int amount = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) spin_lock_bh(&sk->sk_receive_queue.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) skb = skb_peek(&sk->sk_receive_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if (skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) amount = skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) spin_unlock_bh(&sk->sk_receive_queue.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) return put_user(amount, (int __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) return ip6mr_ioctl(sk, cmd, (void __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) static int compat_rawv6_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) case SIOCOUTQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) case SIOCINQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) #ifdef CONFIG_IPV6_MROUTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) return ip6mr_compat_ioctl(sk, cmd, compat_ptr(arg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) static void rawv6_close(struct sock *sk, long timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) if (inet_sk(sk)->inet_num == IPPROTO_RAW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) ip6_ra_control(sk, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) ip6mr_sk_done(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) sk_common_release(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) static void raw6_destroy(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) ip6_flush_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) inet6_destroy_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) static int rawv6_init_sk(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) struct raw6_sock *rp = raw6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) switch (inet_sk(sk)->inet_num) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) case IPPROTO_ICMPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) rp->checksum = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) rp->offset = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) case IPPROTO_MH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) rp->checksum = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) rp->offset = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) struct proto rawv6_prot = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) .name = "RAWv6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) .close = rawv6_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) .destroy = raw6_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) .connect = ip6_datagram_connect_v6_only,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) .disconnect = __udp_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) .ioctl = rawv6_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) .init = rawv6_init_sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) .setsockopt = rawv6_setsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) .getsockopt = rawv6_getsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) .sendmsg = rawv6_sendmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) .recvmsg = rawv6_recvmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) .bind = rawv6_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) .backlog_rcv = rawv6_rcv_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) .hash = raw_hash_sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) .unhash = raw_unhash_sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) .obj_size = sizeof(struct raw6_sock),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) .useroffset = offsetof(struct raw6_sock, filter),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) .usersize = sizeof_field(struct raw6_sock, filter),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) .h.raw_hash = &raw_v6_hashinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) .compat_ioctl = compat_rawv6_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) .diag_destroy = raw_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) static int raw6_seq_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) struct sock *sp = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) __u16 srcp = inet_sk(sp)->inet_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) ip6_dgram_sock_seq_show(seq, v, srcp, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) raw_seq_private(seq)->bucket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) static const struct seq_operations raw6_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) .start = raw_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) .next = raw_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) .stop = raw_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) .show = raw6_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) static int __net_init raw6_init_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) if (!proc_create_net_data("raw6", 0444, net->proc_net, &raw6_seq_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) sizeof(struct raw_iter_state), &raw_v6_hashinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) static void __net_exit raw6_exit_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) remove_proc_entry("raw6", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) static struct pernet_operations raw6_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) .init = raw6_init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) .exit = raw6_exit_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) int __init raw6_proc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) return register_pernet_subsys(&raw6_net_ops);
^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) void raw6_proc_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) unregister_pernet_subsys(&raw6_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) #endif /* CONFIG_PROC_FS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) /* Same as inet6_dgram_ops, sans udp_poll. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) const struct proto_ops inet6_sockraw_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) .family = PF_INET6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) .release = inet6_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) .bind = inet6_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) .connect = inet_dgram_connect, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) .socketpair = sock_no_socketpair, /* a do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) .accept = sock_no_accept, /* a do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) .getname = inet6_getname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) .poll = datagram_poll, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) .ioctl = inet6_ioctl, /* must change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) .gettstamp = sock_gettstamp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) .listen = sock_no_listen, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) .shutdown = inet_shutdown, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) .setsockopt = sock_common_setsockopt, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) .getsockopt = sock_common_getsockopt, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) .sendmsg = inet_sendmsg, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) .recvmsg = sock_common_recvmsg, /* ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) .mmap = sock_no_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) .sendpage = sock_no_sendpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) .compat_ioctl = inet6_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) static struct inet_protosw rawv6_protosw = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) .type = SOCK_RAW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) .protocol = IPPROTO_IP, /* wild card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) .prot = &rawv6_prot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) .ops = &inet6_sockraw_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) .flags = INET_PROTOSW_REUSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) int __init rawv6_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) return inet6_register_protosw(&rawv6_protosw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) void rawv6_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) inet6_unregister_protosw(&rawv6_protosw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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