Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Operations on the network namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #ifndef __NET_NET_NAMESPACE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #define __NET_NET_NAMESPACE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/refcount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/uidgid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <net/flow.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <net/netns/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <net/netns/mib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <net/netns/unix.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <net/netns/packet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <net/netns/ipv4.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <net/netns/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <net/netns/nexthop.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <net/netns/ieee802154_6lowpan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <net/netns/sctp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <net/netns/dccp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <net/netns/netfilter.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <net/netns/x_tables.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <net/netns/conntrack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <net/netns/nftables.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <net/netns/xfrm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <net/netns/mpls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <net/netns/can.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <net/netns/xdp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <net/netns/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <linux/ns_common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) struct user_namespace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) struct proc_dir_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) struct net_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) struct sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) struct ctl_table_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) struct net_generic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) struct uevent_sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) struct netns_ipvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) struct bpf_prog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define NETDEV_HASHBITS    8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) struct net {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	/* First cache line can be often dirtied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	 * Do not place here read-mostly fields.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	refcount_t		passive;	/* To decide when the network
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 						 * namespace should be freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 						 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	refcount_t		count;		/* To decided when the network
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 						 *  namespace should be shut down.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 						 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	spinlock_t		rules_mod_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	unsigned int		dev_unreg_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	unsigned int		dev_base_seq;	/* protected by rtnl_mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	int			ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	spinlock_t		nsid_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	atomic_t		fnhe_genid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	struct list_head	list;		/* list of network namespaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	struct list_head	exit_list;	/* To linked to call pernet exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 						 * methods on dead net (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 						 * pernet_ops_rwsem read locked),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 						 * or to unregister pernet ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 						 * (pernet_ops_rwsem write locked).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 						 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	struct llist_node	cleanup_list;	/* namespaces on death row */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) #ifdef CONFIG_KEYS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	struct key_tag		*key_domain;	/* Key domain of operation tag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	struct user_namespace   *user_ns;	/* Owning user namespace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	struct ucounts		*ucounts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	struct idr		netns_ids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	struct ns_common	ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	struct list_head 	dev_base_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	struct proc_dir_entry 	*proc_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	struct proc_dir_entry 	*proc_net_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	struct ctl_table_set	sysctls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct sock 		*rtnl;			/* rtnetlink socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct sock		*genl_sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	struct uevent_sock	*uevent_sock;		/* uevent socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct hlist_head 	*dev_name_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	struct hlist_head	*dev_index_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	struct raw_notifier_head	netdev_chain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	/* Note that @hash_mix can be read millions times per second,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	 * it is critical that it is on a read_mostly cache line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	u32			hash_mix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	struct net_device       *loopback_dev;          /* The loopback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	/* core fib_rules */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	struct list_head	rules_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	struct netns_core	core;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	struct netns_mib	mib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	struct netns_packet	packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	struct netns_unix	unx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct netns_nexthop	nexthop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	struct netns_ipv4	ipv4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	struct netns_ipv6	ipv6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct netns_ieee802154_lowpan	ieee802154_lowpan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #if defined(CONFIG_IP_SCTP) || defined(CONFIG_IP_SCTP_MODULE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct netns_sctp	sctp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	struct netns_dccp	dccp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #ifdef CONFIG_NETFILTER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	struct netns_nf		nf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct netns_xt		xt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	struct netns_ct		ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	struct netns_nftables	nft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	struct netns_nf_frag	nf_frag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct ctl_table_header *nf_frag_frags_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct sock		*nfnl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct sock		*nfnl_stash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	struct list_head        nfnl_acct_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	struct list_head	nfct_timeout_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #ifdef CONFIG_WEXT_CORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	struct sk_buff_head	wext_nlevents;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	struct net_generic __rcu	*gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	/* Used to store attached BPF programs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	struct netns_bpf	bpf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	/* Note : following structs are cache line aligned */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #ifdef CONFIG_XFRM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct netns_xfrm	xfrm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	atomic64_t		net_cookie; /* written once */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #if IS_ENABLED(CONFIG_IP_VS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	struct netns_ipvs	*ipvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #if IS_ENABLED(CONFIG_MPLS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	struct netns_mpls	mpls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #if IS_ENABLED(CONFIG_CAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	struct netns_can	can;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #ifdef CONFIG_XDP_SOCKETS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct netns_xdp	xdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #if IS_ENABLED(CONFIG_CRYPTO_USER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct sock		*crypto_nlsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	struct sock		*diag_nlsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) } __randomize_layout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) #include <linux/seq_file_net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /* Init's network namespace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) extern struct net init_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			struct net *old_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) void net_ns_get_ownership(const struct net *net, kuid_t *uid, kgid_t *gid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) void net_ns_barrier(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct ns_common *get_net_ns(struct ns_common *ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #else /* CONFIG_NET_NS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #include <linux/nsproxy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static inline struct net *copy_net_ns(unsigned long flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct user_namespace *user_ns, struct net *old_net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	if (flags & CLONE_NEWNET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return old_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static inline void net_ns_get_ownership(const struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 					kuid_t *uid, kgid_t *gid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	*uid = GLOBAL_ROOT_UID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	*gid = GLOBAL_ROOT_GID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static inline void net_ns_barrier(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static inline struct ns_common *get_net_ns(struct ns_common *ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #endif /* CONFIG_NET_NS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) extern struct list_head net_namespace_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct net *get_net_ns_by_pid(pid_t pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct net *get_net_ns_by_fd(int fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) u64 __net_gen_cookie(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) void ipx_register_sysctl(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) void ipx_unregister_sysctl(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define ipx_register_sysctl()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #define ipx_unregister_sysctl()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) void __put_net(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static inline struct net *get_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	refcount_inc(&net->count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	return net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static inline struct net *maybe_get_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	/* Used when we know struct net exists but we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	 * aren't guaranteed a previous reference count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	 * exists.  If the reference count is zero this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	 * function fails and returns NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (!refcount_inc_not_zero(&net->count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		net = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	return net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static inline void put_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	if (refcount_dec_and_test(&net->count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		__put_net(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) int net_eq(const struct net *net1, const struct net *net2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	return net1 == net2;
^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) static inline int check_net(const struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	return refcount_read(&net->count) != 0;
^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) void net_drop_ns(void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static inline struct net *get_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	return net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static inline void put_net(struct net *net)
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static inline struct net *maybe_get_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	return net;
^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 inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int net_eq(const struct net *net1, const struct net *net2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	return 1;
^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 inline int check_net(const struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) #define net_drop_ns NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) } possible_net_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static inline void write_pnet(possible_net_t *pnet, struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	pnet->net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) #endif
^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 inline struct net *read_pnet(const possible_net_t *pnet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	return pnet->net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	return &init_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* Protected by net_rwsem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) #define for_each_net(VAR)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	list_for_each_entry(VAR, &net_namespace_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) #define for_each_net_continue_reverse(VAR)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	list_for_each_entry_continue_reverse(VAR, &net_namespace_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) #define for_each_net_rcu(VAR)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	list_for_each_entry_rcu(VAR, &net_namespace_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #ifdef CONFIG_NET_NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) #define __net_init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #define __net_exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) #define __net_initdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) #define __net_initconst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) #define __net_init	__init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) #define __net_exit	__ref
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) #define __net_initdata	__initdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) #define __net_initconst	__initconst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int peernet2id(const struct net *net, struct net *peer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) bool peernet_has_id(const struct net *net, struct net *peer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct net *get_net_ns_by_id(const struct net *net, int id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct pernet_operations {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	 * Below methods are called without any exclusive locks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	 * More than one net may be constructed and destructed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	 * in parallel on several cpus. Every pernet_operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	 * have to keep in mind all other pernet_operations and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	 * to introduce a locking, if they share common resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	 * The only time they are called with exclusive lock is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	 * from register_pernet_subsys(), unregister_pernet_subsys()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	 * register_pernet_device() and unregister_pernet_device().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	 * Exit methods using blocking RCU primitives, such as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	 * synchronize_rcu(), should be implemented via exit_batch.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	 * Then, destruction of a group of net requires single
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	 * synchronize_rcu() related to these pernet_operations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	 * instead of separate synchronize_rcu() for every net.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	 * Please, avoid synchronize_rcu() at all, where it's possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	 * Note that a combination of pre_exit() and exit() can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	 * be used, since a synchronize_rcu() is guaranteed between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	 * the calls.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	int (*init)(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	void (*pre_exit)(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	void (*exit)(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	void (*exit_batch)(struct list_head *net_exit_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	unsigned int *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)  * Use these carefully.  If you implement a network device and it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)  * needs per network namespace operations use device pernet operations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)  * otherwise use pernet subsys operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)  * Network interfaces need to be removed from a dying netns _before_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)  * subsys notifiers can be called, as most of the network code cleanup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)  * (which is done from subsys notifiers) runs with the assumption that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)  * dev_remove_pack has been called so no new packets will arrive during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)  * and after the cleanup functions have been called.  dev_remove_pack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)  * is not per namespace so instead the guarantee of no more packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)  * arriving in a network namespace is provided by ensuring that all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)  * network devices and all sockets have left the network namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)  * before the cleanup methods are called.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)  * For the longest time the ipv4 icmp code was registered as a pernet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)  * device which caused kernel oops, and panics during network
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)  * namespace cleanup.   So please don't get this wrong.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) int register_pernet_subsys(struct pernet_operations *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) void unregister_pernet_subsys(struct pernet_operations *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int register_pernet_device(struct pernet_operations *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) void unregister_pernet_device(struct pernet_operations *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct ctl_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct ctl_table_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int net_sysctl_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct ctl_table_header *register_net_sysctl(struct net *net, const char *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 					     struct ctl_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) void unregister_net_sysctl_table(struct ctl_table_header *header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static inline int net_sysctl_init(void) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static inline struct ctl_table_header *register_net_sysctl(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	const char *path, struct ctl_table *table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static inline int rt_genid_ipv4(const struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	return atomic_read(&net->ipv4.rt_genid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static inline int rt_genid_ipv6(const struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 	return atomic_read(&net->ipv6.fib6_sernum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) static inline void rt_genid_bump_ipv4(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	atomic_inc(&net->ipv4.rt_genid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) extern void (*__fib6_flush_trees)(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) static inline void rt_genid_bump_ipv6(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	if (__fib6_flush_trees)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		__fib6_flush_trees(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static inline struct netns_ieee802154_lowpan *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) net_ieee802154_lowpan(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 	return &net->ieee802154_lowpan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /* For callers who don't really care about whether it's IPv4 or IPv6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) static inline void rt_genid_bump_all(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 	rt_genid_bump_ipv4(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 	rt_genid_bump_ipv6(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static inline int fnhe_genid(const struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 	return atomic_read(&net->fnhe_genid);
^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) static inline void fnhe_genid_bump(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	atomic_inc(&net->fnhe_genid);
^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) #endif /* __NET_NET_NAMESPACE_H */