15f256becSEric W. Biederman /* 25f256becSEric W. Biederman * Operations on the network namespace 35f256becSEric W. Biederman */ 45f256becSEric W. Biederman #ifndef __NET_NET_NAMESPACE_H 55f256becSEric W. Biederman #define __NET_NET_NAMESPACE_H 65f256becSEric W. Biederman 760063497SArun Sharma #include <linux/atomic.h> 8c122e14dSReshetova, Elena #include <linux/refcount.h> 95f256becSEric W. Biederman #include <linux/workqueue.h> 105f256becSEric W. Biederman #include <linux/list.h> 11bee95250SDavid S. Miller #include <linux/sysctl.h> 125f256becSEric W. Biederman 136a662719SCong Wang #include <net/flow.h> 148efa6e93SPavel Emelyanov #include <net/netns/core.h> 15852566f5SPavel Emelyanov #include <net/netns/mib.h> 16a0a53c8bSDenis V. Lunev #include <net/netns/unix.h> 172aaef4e4SDenis V. Lunev #include <net/netns/packet.h> 188afd351cSPavel Emelyanov #include <net/netns/ipv4.h> 19b0f159dbSDaniel Lezcano #include <net/netns/ipv6.h> 20633fc86fSAlexander Aring #include <net/netns/ieee802154_6lowpan.h> 214db67e80SEric W. Biederman #include <net/netns/sctp.h> 2267019cc9SPavel Emelyanov #include <net/netns/dccp.h> 23f3c1a44aSGao feng #include <net/netns/netfilter.h> 248d870052SAlexey Dobriyan #include <net/netns/x_tables.h> 25dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 26dfdb8d79SAlexey Dobriyan #include <net/netns/conntrack.h> 27dfdb8d79SAlexey Dobriyan #endif 2899633ab2SPablo Neira Ayuso #include <net/netns/nftables.h> 29d62ddc21SAlexey Dobriyan #include <net/netns/xfrm.h> 300189197fSEric W. Biederman #include <net/netns/mpls.h> 318e8cda6dSMario Kicherer #include <net/netns/can.h> 32435d5f4bSAl Viro #include <linux/ns_common.h> 3304c52decSPablo Neira Ayuso #include <linux/idr.h> 3404c52decSPablo Neira Ayuso #include <linux/skbuff.h> 35a0a53c8bSDenis V. Lunev 36038e7332SEric W. Biederman struct user_namespace; 37457c4cbcSEric W. Biederman struct proc_dir_entry; 382774c7abSEric W. Biederman struct net_device; 3997c53cacSDenis V. Lunev struct sock; 401597fbc0SPavel Emelyanov struct ctl_table_header; 41dec827d1SPavel Emelyanov struct net_generic; 42134e6375SJohannes Berg struct sock; 432553d064SJulian Anastasov struct netns_ipvs; 441597fbc0SPavel Emelyanov 457c28bd0bSEric Dumazet 467c28bd0bSEric Dumazet #define NETDEV_HASHBITS 8 477c28bd0bSEric Dumazet #define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS) 487c28bd0bSEric Dumazet 495f256becSEric W. Biederman struct net { 50c122e14dSReshetova, Elena refcount_t passive; /* To decided when the network 515f256becSEric W. Biederman * namespace should be freed. 525f256becSEric W. Biederman */ 53a685e089SAl Viro atomic_t count; /* To decided when the network 54a685e089SAl Viro * namespace should be shut down. 55a685e089SAl Viro */ 568e602ce2SEric Dumazet spinlock_t rules_mod_lock; 578e602ce2SEric Dumazet 5833cf7c90SEric Dumazet atomic64_t cookie_gen; 5933cf7c90SEric Dumazet 605f256becSEric W. Biederman struct list_head list; /* list of network namespaces */ 612b035b39SEric W. Biederman struct list_head cleanup_list; /* namespaces on death row */ 6272ad937aSEric W. Biederman struct list_head exit_list; /* Use only net_mutex */ 63457c4cbcSEric W. Biederman 64038e7332SEric W. Biederman struct user_namespace *user_ns; /* Owning user namespace */ 6570328660SEric W. Biederman struct ucounts *ucounts; 66de133464SWANG Cong spinlock_t nsid_lock; 670c7aecd4SNicolas Dichtel struct idr netns_ids; 68038e7332SEric W. Biederman 69435d5f4bSAl Viro struct ns_common ns; 7098f842e6SEric W. Biederman 71457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net; 72457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net_stat; 73881d966bSEric W. Biederman 7473455092SAl Viro #ifdef CONFIG_SYSCTL 7573455092SAl Viro struct ctl_table_set sysctls; 7673455092SAl Viro #endif 7795bdfccbSEric W. Biederman 788e602ce2SEric Dumazet struct sock *rtnl; /* rtnetlink socket */ 798e602ce2SEric Dumazet struct sock *genl_sock; 802774c7abSEric W. Biederman 81881d966bSEric W. Biederman struct list_head dev_base_head; 82881d966bSEric W. Biederman struct hlist_head *dev_name_head; 83881d966bSEric W. Biederman struct hlist_head *dev_index_head; 844e985adaSThomas Graf unsigned int dev_base_seq; /* protected by rtnl_mutex */ 85aa79e66eSPavel Emelyanov int ifindex; 8650624c93SEric W. Biederman unsigned int dev_unreg_count; 8797c53cacSDenis V. Lunev 885fd30ee7SDenis V. Lunev /* core fib_rules */ 895fd30ee7SDenis V. Lunev struct list_head rules_ops; 905fd30ee7SDenis V. Lunev 91d12d01d6SDenis V. Lunev 928e602ce2SEric Dumazet struct net_device *loopback_dev; /* The loopback */ 938efa6e93SPavel Emelyanov struct netns_core core; 94852566f5SPavel Emelyanov struct netns_mib mib; 952aaef4e4SDenis V. Lunev struct netns_packet packet; 96a0a53c8bSDenis V. Lunev struct netns_unix unx; 978afd351cSPavel Emelyanov struct netns_ipv4 ipv4; 98dfd56b8bSEric Dumazet #if IS_ENABLED(CONFIG_IPV6) 99b0f159dbSDaniel Lezcano struct netns_ipv6 ipv6; 100b0f159dbSDaniel Lezcano #endif 101633fc86fSAlexander Aring #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 102633fc86fSAlexander Aring struct netns_ieee802154_lowpan ieee802154_lowpan; 103633fc86fSAlexander Aring #endif 1044db67e80SEric W. Biederman #if defined(CONFIG_IP_SCTP) || defined(CONFIG_IP_SCTP_MODULE) 1054db67e80SEric W. Biederman struct netns_sctp sctp; 1064db67e80SEric W. Biederman #endif 10767019cc9SPavel Emelyanov #if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE) 10867019cc9SPavel Emelyanov struct netns_dccp dccp; 10967019cc9SPavel Emelyanov #endif 1108d870052SAlexey Dobriyan #ifdef CONFIG_NETFILTER 111f3c1a44aSGao feng struct netns_nf nf; 1128d870052SAlexey Dobriyan struct netns_xt xt; 113dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 114dfdb8d79SAlexey Dobriyan struct netns_ct ct; 115dfdb8d79SAlexey Dobriyan #endif 11699633ab2SPablo Neira Ayuso #if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE) 11799633ab2SPablo Neira Ayuso struct netns_nftables nft; 11899633ab2SPablo Neira Ayuso #endif 119c038a767SAmerigo Wang #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) 120c038a767SAmerigo Wang struct netns_nf_frag nf_frag; 121c038a767SAmerigo Wang #endif 122cd8c20b6SAlexey Dobriyan struct sock *nfnl; 123cd8c20b6SAlexey Dobriyan struct sock *nfnl_stash; 1243499abb2SAndreas Schultz #if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT) 1253499abb2SAndreas Schultz struct list_head nfnl_acct_list; 1263499abb2SAndreas Schultz #endif 12719576c94SPablo Neira #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT) 12819576c94SPablo Neira struct list_head nfct_timeout_list; 12919576c94SPablo Neira #endif 1308d870052SAlexey Dobriyan #endif 1313d23e349SJohannes Berg #ifdef CONFIG_WEXT_CORE 132b333b3d2SJohannes Berg struct sk_buff_head wext_nlevents; 133b333b3d2SJohannes Berg #endif 1341c87733dSEric Dumazet struct net_generic __rcu *gen; 1358e602ce2SEric Dumazet 1368e602ce2SEric Dumazet /* Note : following structs are cache line aligned */ 1378e602ce2SEric Dumazet #ifdef CONFIG_XFRM 1388e602ce2SEric Dumazet struct netns_xfrm xfrm; 1398e602ce2SEric Dumazet #endif 1408b4d14d8SJunweiZhang #if IS_ENABLED(CONFIG_IP_VS) 14161b1ab45SHans Schillstrom struct netns_ipvs *ipvs; 1428b4d14d8SJunweiZhang #endif 1430189197fSEric W. Biederman #if IS_ENABLED(CONFIG_MPLS) 1440189197fSEric W. Biederman struct netns_mpls mpls; 1450189197fSEric W. Biederman #endif 1468e8cda6dSMario Kicherer #if IS_ENABLED(CONFIG_CAN) 1478e8cda6dSMario Kicherer struct netns_can can; 1488e8cda6dSMario Kicherer #endif 14951d7cccfSAndrey Vagin struct sock *diag_nlsk; 1505aad1de5STimo Teräs atomic_t fnhe_genid; 1515f256becSEric W. Biederman }; 1525f256becSEric W. Biederman 153c0f39322SDenis V. Lunev #include <linux/seq_file_net.h> 154c0f39322SDenis V. Lunev 1554fabcd71SDaniel Lezcano /* Init's network namespace */ 1565f256becSEric W. Biederman extern struct net init_net; 157a4aa834aSDenis V. Lunev 158d727abcbSEric W. Biederman #ifdef CONFIG_NET_NS 159e67e16eaSJoe Perches struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns, 160e67e16eaSJoe Perches struct net *old_net); 161225c0a01SDenis V. Lunev 1627866cc57SFlorian Westphal void net_ns_barrier(void); 163d727abcbSEric W. Biederman #else /* CONFIG_NET_NS */ 164d727abcbSEric W. Biederman #include <linux/sched.h> 165d727abcbSEric W. Biederman #include <linux/nsproxy.h> 166038e7332SEric W. Biederman static inline struct net *copy_net_ns(unsigned long flags, 167038e7332SEric W. Biederman struct user_namespace *user_ns, struct net *old_net) 1689dd776b6SEric W. Biederman { 169d727abcbSEric W. Biederman if (flags & CLONE_NEWNET) 170d727abcbSEric W. Biederman return ERR_PTR(-EINVAL); 171d727abcbSEric W. Biederman return old_net; 1729dd776b6SEric W. Biederman } 1737866cc57SFlorian Westphal 1747866cc57SFlorian Westphal static inline void net_ns_barrier(void) {} 175d727abcbSEric W. Biederman #endif /* CONFIG_NET_NS */ 176225c0a01SDenis V. Lunev 177225c0a01SDenis V. Lunev 178225c0a01SDenis V. Lunev extern struct list_head net_namespace_list; 1799dd776b6SEric W. Biederman 180e67e16eaSJoe Perches struct net *get_net_ns_by_pid(pid_t pid); 1810f5258cdSStefan Hajnoczi struct net *get_net_ns_by_fd(int fd); 18230ffee84SJohannes Berg 183535d3ae9SRashika Kheria #ifdef CONFIG_SYSCTL 184535d3ae9SRashika Kheria void ipx_register_sysctl(void); 185535d3ae9SRashika Kheria void ipx_unregister_sysctl(void); 186535d3ae9SRashika Kheria #else 187535d3ae9SRashika Kheria #define ipx_register_sysctl() 188535d3ae9SRashika Kheria #define ipx_unregister_sysctl() 189535d3ae9SRashika Kheria #endif 190535d3ae9SRashika Kheria 191d4655795SPavel Emelyanov #ifdef CONFIG_NET_NS 192e67e16eaSJoe Perches void __put_net(struct net *net); 1935f256becSEric W. Biederman 1945f256becSEric W. Biederman static inline struct net *get_net(struct net *net) 1955f256becSEric W. Biederman { 1965f256becSEric W. Biederman atomic_inc(&net->count); 1975f256becSEric W. Biederman return net; 1985f256becSEric W. Biederman } 1995f256becSEric W. Biederman 200077130c0SEric W. Biederman static inline struct net *maybe_get_net(struct net *net) 201077130c0SEric W. Biederman { 202077130c0SEric W. Biederman /* Used when we know struct net exists but we 203077130c0SEric W. Biederman * aren't guaranteed a previous reference count 204077130c0SEric W. Biederman * exists. If the reference count is zero this 205077130c0SEric W. Biederman * function fails and returns NULL. 206077130c0SEric W. Biederman */ 207077130c0SEric W. Biederman if (!atomic_inc_not_zero(&net->count)) 208077130c0SEric W. Biederman net = NULL; 209077130c0SEric W. Biederman return net; 210077130c0SEric W. Biederman } 211077130c0SEric W. Biederman 2125f256becSEric W. Biederman static inline void put_net(struct net *net) 2135f256becSEric W. Biederman { 2145f256becSEric W. Biederman if (atomic_dec_and_test(&net->count)) 2155f256becSEric W. Biederman __put_net(net); 2165f256becSEric W. Biederman } 2175f256becSEric W. Biederman 218878628fbSYOSHIFUJI Hideaki static inline 219878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 220878628fbSYOSHIFUJI Hideaki { 221878628fbSYOSHIFUJI Hideaki return net1 == net2; 222878628fbSYOSHIFUJI Hideaki } 223a685e089SAl Viro 224e67e16eaSJoe Perches void net_drop_ns(void *); 225a685e089SAl Viro 226d4655795SPavel Emelyanov #else 227b9f75f45SEric W. Biederman 228d4655795SPavel Emelyanov static inline struct net *get_net(struct net *net) 229d4655795SPavel Emelyanov { 230d4655795SPavel Emelyanov return net; 231d4655795SPavel Emelyanov } 232d4655795SPavel Emelyanov 233d4655795SPavel Emelyanov static inline void put_net(struct net *net) 234d4655795SPavel Emelyanov { 235d4655795SPavel Emelyanov } 236d4655795SPavel Emelyanov 237d4655795SPavel Emelyanov static inline struct net *maybe_get_net(struct net *net) 238d4655795SPavel Emelyanov { 239d4655795SPavel Emelyanov return net; 240d4655795SPavel Emelyanov } 241878628fbSYOSHIFUJI Hideaki 242878628fbSYOSHIFUJI Hideaki static inline 243878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 244878628fbSYOSHIFUJI Hideaki { 245878628fbSYOSHIFUJI Hideaki return 1; 246878628fbSYOSHIFUJI Hideaki } 247a685e089SAl Viro 248a685e089SAl Viro #define net_drop_ns NULL 249d4655795SPavel Emelyanov #endif 2505f256becSEric W. Biederman 2515d1e4468SDenis V. Lunev 2520c5c9fb5SEric W. Biederman typedef struct { 2538f424b5fSEric Dumazet #ifdef CONFIG_NET_NS 2540c5c9fb5SEric W. Biederman struct net *net; 2558f424b5fSEric Dumazet #endif 2560c5c9fb5SEric W. Biederman } possible_net_t; 2570c5c9fb5SEric W. Biederman 2580c5c9fb5SEric W. Biederman static inline void write_pnet(possible_net_t *pnet, struct net *net) 2590c5c9fb5SEric W. Biederman { 2600c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2610c5c9fb5SEric W. Biederman pnet->net = net; 2620c5c9fb5SEric W. Biederman #endif 2630c5c9fb5SEric W. Biederman } 2640c5c9fb5SEric W. Biederman 2650c5c9fb5SEric W. Biederman static inline struct net *read_pnet(const possible_net_t *pnet) 2660c5c9fb5SEric W. Biederman { 2670c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2680c5c9fb5SEric W. Biederman return pnet->net; 2690c5c9fb5SEric W. Biederman #else 2700c5c9fb5SEric W. Biederman return &init_net; 2710c5c9fb5SEric W. Biederman #endif 2720c5c9fb5SEric W. Biederman } 2735d1e4468SDenis V. Lunev 2745f256becSEric W. Biederman #define for_each_net(VAR) \ 2755f256becSEric W. Biederman list_for_each_entry(VAR, &net_namespace_list, list) 2765f256becSEric W. Biederman 27711a28d37SJohannes Berg #define for_each_net_rcu(VAR) \ 27811a28d37SJohannes Berg list_for_each_entry_rcu(VAR, &net_namespace_list, list) 27911a28d37SJohannes Berg 2804665079cSPavel Emelyanov #ifdef CONFIG_NET_NS 2814665079cSPavel Emelyanov #define __net_init 2824665079cSPavel Emelyanov #define __net_exit 283022cbae6SDenis V. Lunev #define __net_initdata 28404a6f82cSAndi Kleen #define __net_initconst 2854665079cSPavel Emelyanov #else 2864665079cSPavel Emelyanov #define __net_init __init 287bd721ea7SFabian Frederick #define __net_exit __ref 288022cbae6SDenis V. Lunev #define __net_initdata __initdata 28904a6f82cSAndi Kleen #define __net_initconst __initconst 2904665079cSPavel Emelyanov #endif 2915f256becSEric W. Biederman 2927a0877d4SNicolas Dichtel int peernet2id_alloc(struct net *net, struct net *peer); 29359324cf3SNicolas Dichtel int peernet2id(struct net *net, struct net *peer); 29459324cf3SNicolas Dichtel bool peernet_has_id(struct net *net, struct net *peer); 2950c7aecd4SNicolas Dichtel struct net *get_net_ns_by_id(struct net *net, int id); 2960c7aecd4SNicolas Dichtel 2975f256becSEric W. Biederman struct pernet_operations { 2985f256becSEric W. Biederman struct list_head list; 2995f256becSEric W. Biederman int (*init)(struct net *net); 3005f256becSEric W. Biederman void (*exit)(struct net *net); 30172ad937aSEric W. Biederman void (*exit_batch)(struct list_head *net_exit_list); 302c7d03a00SAlexey Dobriyan unsigned int *id; 303f875bae0SEric W. Biederman size_t size; 3045f256becSEric W. Biederman }; 3055f256becSEric W. Biederman 30617edde52SEric W. Biederman /* 30717edde52SEric W. Biederman * Use these carefully. If you implement a network device and it 30817edde52SEric W. Biederman * needs per network namespace operations use device pernet operations, 30917edde52SEric W. Biederman * otherwise use pernet subsys operations. 31017edde52SEric W. Biederman * 3114edf547bSJohannes Berg * Network interfaces need to be removed from a dying netns _before_ 3124edf547bSJohannes Berg * subsys notifiers can be called, as most of the network code cleanup 3134edf547bSJohannes Berg * (which is done from subsys notifiers) runs with the assumption that 3144edf547bSJohannes Berg * dev_remove_pack has been called so no new packets will arrive during 3154edf547bSJohannes Berg * and after the cleanup functions have been called. dev_remove_pack 3164edf547bSJohannes Berg * is not per namespace so instead the guarantee of no more packets 3174edf547bSJohannes Berg * arriving in a network namespace is provided by ensuring that all 3184edf547bSJohannes Berg * network devices and all sockets have left the network namespace 3194edf547bSJohannes Berg * before the cleanup methods are called. 32017edde52SEric W. Biederman * 32117edde52SEric W. Biederman * For the longest time the ipv4 icmp code was registered as a pernet 32217edde52SEric W. Biederman * device which caused kernel oops, and panics during network 32317edde52SEric W. Biederman * namespace cleanup. So please don't get this wrong. 32417edde52SEric W. Biederman */ 325e67e16eaSJoe Perches int register_pernet_subsys(struct pernet_operations *); 326e67e16eaSJoe Perches void unregister_pernet_subsys(struct pernet_operations *); 327e67e16eaSJoe Perches int register_pernet_device(struct pernet_operations *); 328e67e16eaSJoe Perches void unregister_pernet_device(struct pernet_operations *); 329f875bae0SEric W. Biederman 33095bdfccbSEric W. Biederman struct ctl_table; 33195bdfccbSEric W. Biederman struct ctl_table_header; 332d62c612eSPavel Emelyanov 3332ca794e5SEric W. Biederman #ifdef CONFIG_SYSCTL 334e67e16eaSJoe Perches int net_sysctl_init(void); 335e67e16eaSJoe Perches struct ctl_table_header *register_net_sysctl(struct net *net, const char *path, 336e67e16eaSJoe Perches struct ctl_table *table); 337e67e16eaSJoe Perches void unregister_net_sysctl_table(struct ctl_table_header *header); 33848c74958SEric W. Biederman #else 33948c74958SEric W. Biederman static inline int net_sysctl_init(void) { return 0; } 34048c74958SEric W. Biederman static inline struct ctl_table_header *register_net_sysctl(struct net *net, 34148c74958SEric W. Biederman const char *path, struct ctl_table *table) 34248c74958SEric W. Biederman { 34348c74958SEric W. Biederman return NULL; 34448c74958SEric W. Biederman } 34548c74958SEric W. Biederman static inline void unregister_net_sysctl_table(struct ctl_table_header *header) 34648c74958SEric W. Biederman { 34748c74958SEric W. Biederman } 34848c74958SEric W. Biederman #endif 34948c74958SEric W. Biederman 350ca4c3fc2Sfan.du static inline int rt_genid_ipv4(struct net *net) 351b42664f8SNicolas Dichtel { 352ca4c3fc2Sfan.du return atomic_read(&net->ipv4.rt_genid); 353b42664f8SNicolas Dichtel } 354b42664f8SNicolas Dichtel 355ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv4(struct net *net) 356b42664f8SNicolas Dichtel { 357ca4c3fc2Sfan.du atomic_inc(&net->ipv4.rt_genid); 358ca4c3fc2Sfan.du } 359ca4c3fc2Sfan.du 360705f1c86SHannes Frederic Sowa extern void (*__fib6_flush_trees)(struct net *net); 361ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv6(struct net *net) 362ca4c3fc2Sfan.du { 363705f1c86SHannes Frederic Sowa if (__fib6_flush_trees) 364705f1c86SHannes Frederic Sowa __fib6_flush_trees(net); 365ca4c3fc2Sfan.du } 366ca4c3fc2Sfan.du 367599018a7SLuis R. Rodriguez #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 368599018a7SLuis R. Rodriguez static inline struct netns_ieee802154_lowpan * 369599018a7SLuis R. Rodriguez net_ieee802154_lowpan(struct net *net) 370599018a7SLuis R. Rodriguez { 371599018a7SLuis R. Rodriguez return &net->ieee802154_lowpan; 372599018a7SLuis R. Rodriguez } 373599018a7SLuis R. Rodriguez #endif 374599018a7SLuis R. Rodriguez 375ca4c3fc2Sfan.du /* For callers who don't really care about whether it's IPv4 or IPv6 */ 376ca4c3fc2Sfan.du static inline void rt_genid_bump_all(struct net *net) 377ca4c3fc2Sfan.du { 378ca4c3fc2Sfan.du rt_genid_bump_ipv4(net); 379ca4c3fc2Sfan.du rt_genid_bump_ipv6(net); 380b42664f8SNicolas Dichtel } 38195bdfccbSEric W. Biederman 3825aad1de5STimo Teräs static inline int fnhe_genid(struct net *net) 3835aad1de5STimo Teräs { 3845aad1de5STimo Teräs return atomic_read(&net->fnhe_genid); 3855aad1de5STimo Teräs } 3865aad1de5STimo Teräs 3875aad1de5STimo Teräs static inline void fnhe_genid_bump(struct net *net) 3885aad1de5STimo Teräs { 3895aad1de5STimo Teräs atomic_inc(&net->fnhe_genid); 3905aad1de5STimo Teräs } 3915aad1de5STimo Teräs 3925f256becSEric W. Biederman #endif /* __NET_NET_NAMESPACE_H */ 393