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> 85f256becSEric W. Biederman #include <linux/workqueue.h> 95f256becSEric W. Biederman #include <linux/list.h> 10bee95250SDavid S. Miller #include <linux/sysctl.h> 115f256becSEric W. Biederman 126a662719SCong Wang #include <net/flow.h> 138efa6e93SPavel Emelyanov #include <net/netns/core.h> 14852566f5SPavel Emelyanov #include <net/netns/mib.h> 15a0a53c8bSDenis V. Lunev #include <net/netns/unix.h> 162aaef4e4SDenis V. Lunev #include <net/netns/packet.h> 178afd351cSPavel Emelyanov #include <net/netns/ipv4.h> 18b0f159dbSDaniel Lezcano #include <net/netns/ipv6.h> 19633fc86fSAlexander Aring #include <net/netns/ieee802154_6lowpan.h> 204db67e80SEric W. Biederman #include <net/netns/sctp.h> 2167019cc9SPavel Emelyanov #include <net/netns/dccp.h> 22f3c1a44aSGao feng #include <net/netns/netfilter.h> 238d870052SAlexey Dobriyan #include <net/netns/x_tables.h> 24dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 25dfdb8d79SAlexey Dobriyan #include <net/netns/conntrack.h> 26dfdb8d79SAlexey Dobriyan #endif 2799633ab2SPablo Neira Ayuso #include <net/netns/nftables.h> 28d62ddc21SAlexey Dobriyan #include <net/netns/xfrm.h> 290189197fSEric W. Biederman #include <net/netns/mpls.h> 308e8cda6dSMario Kicherer #include <net/netns/can.h> 31435d5f4bSAl Viro #include <linux/ns_common.h> 3204c52decSPablo Neira Ayuso #include <linux/idr.h> 3304c52decSPablo Neira Ayuso #include <linux/skbuff.h> 34a0a53c8bSDenis V. Lunev 35038e7332SEric W. Biederman struct user_namespace; 36457c4cbcSEric W. Biederman struct proc_dir_entry; 372774c7abSEric W. Biederman struct net_device; 3897c53cacSDenis V. Lunev struct sock; 391597fbc0SPavel Emelyanov struct ctl_table_header; 40dec827d1SPavel Emelyanov struct net_generic; 41134e6375SJohannes Berg struct sock; 422553d064SJulian Anastasov struct netns_ipvs; 431597fbc0SPavel Emelyanov 447c28bd0bSEric Dumazet 457c28bd0bSEric Dumazet #define NETDEV_HASHBITS 8 467c28bd0bSEric Dumazet #define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS) 477c28bd0bSEric Dumazet 485f256becSEric W. Biederman struct net { 49a685e089SAl Viro atomic_t passive; /* To decided when the network 505f256becSEric W. Biederman * namespace should be freed. 515f256becSEric W. Biederman */ 52a685e089SAl Viro atomic_t count; /* To decided when the network 53a685e089SAl Viro * namespace should be shut down. 54a685e089SAl Viro */ 558e602ce2SEric Dumazet spinlock_t rules_mod_lock; 568e602ce2SEric Dumazet 5733cf7c90SEric Dumazet atomic64_t cookie_gen; 5833cf7c90SEric Dumazet 595f256becSEric W. Biederman struct list_head list; /* list of network namespaces */ 602b035b39SEric W. Biederman struct list_head cleanup_list; /* namespaces on death row */ 6172ad937aSEric W. Biederman struct list_head exit_list; /* Use only net_mutex */ 62457c4cbcSEric W. Biederman 63038e7332SEric W. Biederman struct user_namespace *user_ns; /* Owning user namespace */ 6470328660SEric W. Biederman struct ucounts *ucounts; 65de133464SWANG Cong spinlock_t nsid_lock; 660c7aecd4SNicolas Dichtel struct idr netns_ids; 67038e7332SEric W. Biederman 68435d5f4bSAl Viro struct ns_common ns; 6998f842e6SEric W. Biederman 70457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net; 71457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net_stat; 72881d966bSEric W. Biederman 7373455092SAl Viro #ifdef CONFIG_SYSCTL 7473455092SAl Viro struct ctl_table_set sysctls; 7573455092SAl Viro #endif 7695bdfccbSEric W. Biederman 778e602ce2SEric Dumazet struct sock *rtnl; /* rtnetlink socket */ 788e602ce2SEric Dumazet struct sock *genl_sock; 792774c7abSEric W. Biederman 80881d966bSEric W. Biederman struct list_head dev_base_head; 81881d966bSEric W. Biederman struct hlist_head *dev_name_head; 82881d966bSEric W. Biederman struct hlist_head *dev_index_head; 834e985adaSThomas Graf unsigned int dev_base_seq; /* protected by rtnl_mutex */ 84aa79e66eSPavel Emelyanov int ifindex; 8550624c93SEric W. Biederman unsigned int dev_unreg_count; 8697c53cacSDenis V. Lunev 875fd30ee7SDenis V. Lunev /* core fib_rules */ 885fd30ee7SDenis V. Lunev struct list_head rules_ops; 895fd30ee7SDenis V. Lunev 90d12d01d6SDenis V. Lunev 918e602ce2SEric Dumazet struct net_device *loopback_dev; /* The loopback */ 928efa6e93SPavel Emelyanov struct netns_core core; 93852566f5SPavel Emelyanov struct netns_mib mib; 942aaef4e4SDenis V. Lunev struct netns_packet packet; 95a0a53c8bSDenis V. Lunev struct netns_unix unx; 968afd351cSPavel Emelyanov struct netns_ipv4 ipv4; 97dfd56b8bSEric Dumazet #if IS_ENABLED(CONFIG_IPV6) 98b0f159dbSDaniel Lezcano struct netns_ipv6 ipv6; 99b0f159dbSDaniel Lezcano #endif 100633fc86fSAlexander Aring #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 101633fc86fSAlexander Aring struct netns_ieee802154_lowpan ieee802154_lowpan; 102633fc86fSAlexander Aring #endif 1034db67e80SEric W. Biederman #if defined(CONFIG_IP_SCTP) || defined(CONFIG_IP_SCTP_MODULE) 1044db67e80SEric W. Biederman struct netns_sctp sctp; 1054db67e80SEric W. Biederman #endif 10667019cc9SPavel Emelyanov #if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE) 10767019cc9SPavel Emelyanov struct netns_dccp dccp; 10867019cc9SPavel Emelyanov #endif 1098d870052SAlexey Dobriyan #ifdef CONFIG_NETFILTER 110f3c1a44aSGao feng struct netns_nf nf; 1118d870052SAlexey Dobriyan struct netns_xt xt; 112dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 113dfdb8d79SAlexey Dobriyan struct netns_ct ct; 114dfdb8d79SAlexey Dobriyan #endif 11599633ab2SPablo Neira Ayuso #if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE) 11699633ab2SPablo Neira Ayuso struct netns_nftables nft; 11799633ab2SPablo Neira Ayuso #endif 118c038a767SAmerigo Wang #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) 119c038a767SAmerigo Wang struct netns_nf_frag nf_frag; 120c038a767SAmerigo Wang #endif 121cd8c20b6SAlexey Dobriyan struct sock *nfnl; 122cd8c20b6SAlexey Dobriyan struct sock *nfnl_stash; 1233499abb2SAndreas Schultz #if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT) 1243499abb2SAndreas Schultz struct list_head nfnl_acct_list; 1253499abb2SAndreas Schultz #endif 12619576c94SPablo Neira #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT) 12719576c94SPablo Neira struct list_head nfct_timeout_list; 12819576c94SPablo Neira #endif 1298d870052SAlexey Dobriyan #endif 1303d23e349SJohannes Berg #ifdef CONFIG_WEXT_CORE 131b333b3d2SJohannes Berg struct sk_buff_head wext_nlevents; 132b333b3d2SJohannes Berg #endif 1331c87733dSEric Dumazet struct net_generic __rcu *gen; 1348e602ce2SEric Dumazet 1358e602ce2SEric Dumazet /* Note : following structs are cache line aligned */ 1368e602ce2SEric Dumazet #ifdef CONFIG_XFRM 1378e602ce2SEric Dumazet struct netns_xfrm xfrm; 1388e602ce2SEric Dumazet #endif 1398b4d14d8SJunweiZhang #if IS_ENABLED(CONFIG_IP_VS) 14061b1ab45SHans Schillstrom struct netns_ipvs *ipvs; 1418b4d14d8SJunweiZhang #endif 1420189197fSEric W. Biederman #if IS_ENABLED(CONFIG_MPLS) 1430189197fSEric W. Biederman struct netns_mpls mpls; 1440189197fSEric W. Biederman #endif 1458e8cda6dSMario Kicherer #if IS_ENABLED(CONFIG_CAN) 1468e8cda6dSMario Kicherer struct netns_can can; 1478e8cda6dSMario Kicherer #endif 14851d7cccfSAndrey Vagin struct sock *diag_nlsk; 1495aad1de5STimo Teräs atomic_t fnhe_genid; 1505f256becSEric W. Biederman }; 1515f256becSEric W. Biederman 152c0f39322SDenis V. Lunev #include <linux/seq_file_net.h> 153c0f39322SDenis V. Lunev 1544fabcd71SDaniel Lezcano /* Init's network namespace */ 1555f256becSEric W. Biederman extern struct net init_net; 156a4aa834aSDenis V. Lunev 157d727abcbSEric W. Biederman #ifdef CONFIG_NET_NS 158e67e16eaSJoe Perches struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns, 159e67e16eaSJoe Perches struct net *old_net); 160225c0a01SDenis V. Lunev 1617866cc57SFlorian Westphal void net_ns_barrier(void); 162d727abcbSEric W. Biederman #else /* CONFIG_NET_NS */ 163d727abcbSEric W. Biederman #include <linux/sched.h> 164d727abcbSEric W. Biederman #include <linux/nsproxy.h> 165038e7332SEric W. Biederman static inline struct net *copy_net_ns(unsigned long flags, 166038e7332SEric W. Biederman struct user_namespace *user_ns, struct net *old_net) 1679dd776b6SEric W. Biederman { 168d727abcbSEric W. Biederman if (flags & CLONE_NEWNET) 169d727abcbSEric W. Biederman return ERR_PTR(-EINVAL); 170d727abcbSEric W. Biederman return old_net; 1719dd776b6SEric W. Biederman } 1727866cc57SFlorian Westphal 1737866cc57SFlorian Westphal static inline void net_ns_barrier(void) {} 174d727abcbSEric W. Biederman #endif /* CONFIG_NET_NS */ 175225c0a01SDenis V. Lunev 176225c0a01SDenis V. Lunev 177225c0a01SDenis V. Lunev extern struct list_head net_namespace_list; 1789dd776b6SEric W. Biederman 179e67e16eaSJoe Perches struct net *get_net_ns_by_pid(pid_t pid); 1800f5258cdSStefan Hajnoczi struct net *get_net_ns_by_fd(int fd); 18130ffee84SJohannes Berg 182535d3ae9SRashika Kheria #ifdef CONFIG_SYSCTL 183535d3ae9SRashika Kheria void ipx_register_sysctl(void); 184535d3ae9SRashika Kheria void ipx_unregister_sysctl(void); 185535d3ae9SRashika Kheria #else 186535d3ae9SRashika Kheria #define ipx_register_sysctl() 187535d3ae9SRashika Kheria #define ipx_unregister_sysctl() 188535d3ae9SRashika Kheria #endif 189535d3ae9SRashika Kheria 190d4655795SPavel Emelyanov #ifdef CONFIG_NET_NS 191e67e16eaSJoe Perches void __put_net(struct net *net); 1925f256becSEric W. Biederman 1935f256becSEric W. Biederman static inline struct net *get_net(struct net *net) 1945f256becSEric W. Biederman { 1955f256becSEric W. Biederman atomic_inc(&net->count); 1965f256becSEric W. Biederman return net; 1975f256becSEric W. Biederman } 1985f256becSEric W. Biederman 199077130c0SEric W. Biederman static inline struct net *maybe_get_net(struct net *net) 200077130c0SEric W. Biederman { 201077130c0SEric W. Biederman /* Used when we know struct net exists but we 202077130c0SEric W. Biederman * aren't guaranteed a previous reference count 203077130c0SEric W. Biederman * exists. If the reference count is zero this 204077130c0SEric W. Biederman * function fails and returns NULL. 205077130c0SEric W. Biederman */ 206077130c0SEric W. Biederman if (!atomic_inc_not_zero(&net->count)) 207077130c0SEric W. Biederman net = NULL; 208077130c0SEric W. Biederman return net; 209077130c0SEric W. Biederman } 210077130c0SEric W. Biederman 2115f256becSEric W. Biederman static inline void put_net(struct net *net) 2125f256becSEric W. Biederman { 2135f256becSEric W. Biederman if (atomic_dec_and_test(&net->count)) 2145f256becSEric W. Biederman __put_net(net); 2155f256becSEric W. Biederman } 2165f256becSEric W. Biederman 217878628fbSYOSHIFUJI Hideaki static inline 218878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 219878628fbSYOSHIFUJI Hideaki { 220878628fbSYOSHIFUJI Hideaki return net1 == net2; 221878628fbSYOSHIFUJI Hideaki } 222a685e089SAl Viro 223e67e16eaSJoe Perches void net_drop_ns(void *); 224a685e089SAl Viro 225d4655795SPavel Emelyanov #else 226b9f75f45SEric W. Biederman 227d4655795SPavel Emelyanov static inline struct net *get_net(struct net *net) 228d4655795SPavel Emelyanov { 229d4655795SPavel Emelyanov return net; 230d4655795SPavel Emelyanov } 231d4655795SPavel Emelyanov 232d4655795SPavel Emelyanov static inline void put_net(struct net *net) 233d4655795SPavel Emelyanov { 234d4655795SPavel Emelyanov } 235d4655795SPavel Emelyanov 236d4655795SPavel Emelyanov static inline struct net *maybe_get_net(struct net *net) 237d4655795SPavel Emelyanov { 238d4655795SPavel Emelyanov return net; 239d4655795SPavel Emelyanov } 240878628fbSYOSHIFUJI Hideaki 241878628fbSYOSHIFUJI Hideaki static inline 242878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 243878628fbSYOSHIFUJI Hideaki { 244878628fbSYOSHIFUJI Hideaki return 1; 245878628fbSYOSHIFUJI Hideaki } 246a685e089SAl Viro 247a685e089SAl Viro #define net_drop_ns NULL 248d4655795SPavel Emelyanov #endif 2495f256becSEric W. Biederman 2505d1e4468SDenis V. Lunev 2510c5c9fb5SEric W. Biederman typedef struct { 2528f424b5fSEric Dumazet #ifdef CONFIG_NET_NS 2530c5c9fb5SEric W. Biederman struct net *net; 2548f424b5fSEric Dumazet #endif 2550c5c9fb5SEric W. Biederman } possible_net_t; 2560c5c9fb5SEric W. Biederman 2570c5c9fb5SEric W. Biederman static inline void write_pnet(possible_net_t *pnet, struct net *net) 2580c5c9fb5SEric W. Biederman { 2590c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2600c5c9fb5SEric W. Biederman pnet->net = net; 2610c5c9fb5SEric W. Biederman #endif 2620c5c9fb5SEric W. Biederman } 2630c5c9fb5SEric W. Biederman 2640c5c9fb5SEric W. Biederman static inline struct net *read_pnet(const possible_net_t *pnet) 2650c5c9fb5SEric W. Biederman { 2660c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2670c5c9fb5SEric W. Biederman return pnet->net; 2680c5c9fb5SEric W. Biederman #else 2690c5c9fb5SEric W. Biederman return &init_net; 2700c5c9fb5SEric W. Biederman #endif 2710c5c9fb5SEric W. Biederman } 2725d1e4468SDenis V. Lunev 2735f256becSEric W. Biederman #define for_each_net(VAR) \ 2745f256becSEric W. Biederman list_for_each_entry(VAR, &net_namespace_list, list) 2755f256becSEric W. Biederman 27611a28d37SJohannes Berg #define for_each_net_rcu(VAR) \ 27711a28d37SJohannes Berg list_for_each_entry_rcu(VAR, &net_namespace_list, list) 27811a28d37SJohannes Berg 2794665079cSPavel Emelyanov #ifdef CONFIG_NET_NS 2804665079cSPavel Emelyanov #define __net_init 2814665079cSPavel Emelyanov #define __net_exit 282022cbae6SDenis V. Lunev #define __net_initdata 28304a6f82cSAndi Kleen #define __net_initconst 2844665079cSPavel Emelyanov #else 2854665079cSPavel Emelyanov #define __net_init __init 286bd721ea7SFabian Frederick #define __net_exit __ref 287022cbae6SDenis V. Lunev #define __net_initdata __initdata 28804a6f82cSAndi Kleen #define __net_initconst __initconst 2894665079cSPavel Emelyanov #endif 2905f256becSEric W. Biederman 2917a0877d4SNicolas Dichtel int peernet2id_alloc(struct net *net, struct net *peer); 29259324cf3SNicolas Dichtel int peernet2id(struct net *net, struct net *peer); 29359324cf3SNicolas Dichtel bool peernet_has_id(struct net *net, struct net *peer); 2940c7aecd4SNicolas Dichtel struct net *get_net_ns_by_id(struct net *net, int id); 2950c7aecd4SNicolas Dichtel 2965f256becSEric W. Biederman struct pernet_operations { 2975f256becSEric W. Biederman struct list_head list; 2985f256becSEric W. Biederman int (*init)(struct net *net); 2995f256becSEric W. Biederman void (*exit)(struct net *net); 30072ad937aSEric W. Biederman void (*exit_batch)(struct list_head *net_exit_list); 301c7d03a00SAlexey Dobriyan unsigned int *id; 302f875bae0SEric W. Biederman size_t size; 3035f256becSEric W. Biederman }; 3045f256becSEric W. Biederman 30517edde52SEric W. Biederman /* 30617edde52SEric W. Biederman * Use these carefully. If you implement a network device and it 30717edde52SEric W. Biederman * needs per network namespace operations use device pernet operations, 30817edde52SEric W. Biederman * otherwise use pernet subsys operations. 30917edde52SEric W. Biederman * 3104edf547bSJohannes Berg * Network interfaces need to be removed from a dying netns _before_ 3114edf547bSJohannes Berg * subsys notifiers can be called, as most of the network code cleanup 3124edf547bSJohannes Berg * (which is done from subsys notifiers) runs with the assumption that 3134edf547bSJohannes Berg * dev_remove_pack has been called so no new packets will arrive during 3144edf547bSJohannes Berg * and after the cleanup functions have been called. dev_remove_pack 3154edf547bSJohannes Berg * is not per namespace so instead the guarantee of no more packets 3164edf547bSJohannes Berg * arriving in a network namespace is provided by ensuring that all 3174edf547bSJohannes Berg * network devices and all sockets have left the network namespace 3184edf547bSJohannes Berg * before the cleanup methods are called. 31917edde52SEric W. Biederman * 32017edde52SEric W. Biederman * For the longest time the ipv4 icmp code was registered as a pernet 32117edde52SEric W. Biederman * device which caused kernel oops, and panics during network 32217edde52SEric W. Biederman * namespace cleanup. So please don't get this wrong. 32317edde52SEric W. Biederman */ 324e67e16eaSJoe Perches int register_pernet_subsys(struct pernet_operations *); 325e67e16eaSJoe Perches void unregister_pernet_subsys(struct pernet_operations *); 326e67e16eaSJoe Perches int register_pernet_device(struct pernet_operations *); 327e67e16eaSJoe Perches void unregister_pernet_device(struct pernet_operations *); 328f875bae0SEric W. Biederman 32995bdfccbSEric W. Biederman struct ctl_table; 33095bdfccbSEric W. Biederman struct ctl_table_header; 331d62c612eSPavel Emelyanov 3322ca794e5SEric W. Biederman #ifdef CONFIG_SYSCTL 333e67e16eaSJoe Perches int net_sysctl_init(void); 334e67e16eaSJoe Perches struct ctl_table_header *register_net_sysctl(struct net *net, const char *path, 335e67e16eaSJoe Perches struct ctl_table *table); 336e67e16eaSJoe Perches void unregister_net_sysctl_table(struct ctl_table_header *header); 33748c74958SEric W. Biederman #else 33848c74958SEric W. Biederman static inline int net_sysctl_init(void) { return 0; } 33948c74958SEric W. Biederman static inline struct ctl_table_header *register_net_sysctl(struct net *net, 34048c74958SEric W. Biederman const char *path, struct ctl_table *table) 34148c74958SEric W. Biederman { 34248c74958SEric W. Biederman return NULL; 34348c74958SEric W. Biederman } 34448c74958SEric W. Biederman static inline void unregister_net_sysctl_table(struct ctl_table_header *header) 34548c74958SEric W. Biederman { 34648c74958SEric W. Biederman } 34748c74958SEric W. Biederman #endif 34848c74958SEric W. Biederman 349ca4c3fc2Sfan.du static inline int rt_genid_ipv4(struct net *net) 350b42664f8SNicolas Dichtel { 351ca4c3fc2Sfan.du return atomic_read(&net->ipv4.rt_genid); 352b42664f8SNicolas Dichtel } 353b42664f8SNicolas Dichtel 354ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv4(struct net *net) 355b42664f8SNicolas Dichtel { 356ca4c3fc2Sfan.du atomic_inc(&net->ipv4.rt_genid); 357ca4c3fc2Sfan.du } 358ca4c3fc2Sfan.du 359705f1c86SHannes Frederic Sowa extern void (*__fib6_flush_trees)(struct net *net); 360ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv6(struct net *net) 361ca4c3fc2Sfan.du { 362705f1c86SHannes Frederic Sowa if (__fib6_flush_trees) 363705f1c86SHannes Frederic Sowa __fib6_flush_trees(net); 364ca4c3fc2Sfan.du } 365ca4c3fc2Sfan.du 366599018a7SLuis R. Rodriguez #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 367599018a7SLuis R. Rodriguez static inline struct netns_ieee802154_lowpan * 368599018a7SLuis R. Rodriguez net_ieee802154_lowpan(struct net *net) 369599018a7SLuis R. Rodriguez { 370599018a7SLuis R. Rodriguez return &net->ieee802154_lowpan; 371599018a7SLuis R. Rodriguez } 372599018a7SLuis R. Rodriguez #endif 373599018a7SLuis R. Rodriguez 374ca4c3fc2Sfan.du /* For callers who don't really care about whether it's IPv4 or IPv6 */ 375ca4c3fc2Sfan.du static inline void rt_genid_bump_all(struct net *net) 376ca4c3fc2Sfan.du { 377ca4c3fc2Sfan.du rt_genid_bump_ipv4(net); 378ca4c3fc2Sfan.du rt_genid_bump_ipv6(net); 379b42664f8SNicolas Dichtel } 38095bdfccbSEric W. Biederman 3815aad1de5STimo Teräs static inline int fnhe_genid(struct net *net) 3825aad1de5STimo Teräs { 3835aad1de5STimo Teräs return atomic_read(&net->fnhe_genid); 3845aad1de5STimo Teräs } 3855aad1de5STimo Teräs 3865aad1de5STimo Teräs static inline void fnhe_genid_bump(struct net *net) 3875aad1de5STimo Teräs { 3885aad1de5STimo Teräs atomic_inc(&net->fnhe_genid); 3895aad1de5STimo Teräs } 3905aad1de5STimo Teräs 3915f256becSEric W. Biederman #endif /* __NET_NET_NAMESPACE_H */ 392