1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 25f256becSEric W. Biederman /* 35f256becSEric W. Biederman * Operations on the network namespace 45f256becSEric W. Biederman */ 55f256becSEric W. Biederman #ifndef __NET_NET_NAMESPACE_H 65f256becSEric W. Biederman #define __NET_NET_NAMESPACE_H 75f256becSEric W. Biederman 860063497SArun Sharma #include <linux/atomic.h> 9c122e14dSReshetova, Elena #include <linux/refcount.h> 105f256becSEric W. Biederman #include <linux/workqueue.h> 115f256becSEric W. Biederman #include <linux/list.h> 12bee95250SDavid S. Miller #include <linux/sysctl.h> 135f256becSEric W. Biederman 146a662719SCong Wang #include <net/flow.h> 158efa6e93SPavel Emelyanov #include <net/netns/core.h> 16852566f5SPavel Emelyanov #include <net/netns/mib.h> 17a0a53c8bSDenis V. Lunev #include <net/netns/unix.h> 182aaef4e4SDenis V. Lunev #include <net/netns/packet.h> 198afd351cSPavel Emelyanov #include <net/netns/ipv4.h> 20b0f159dbSDaniel Lezcano #include <net/netns/ipv6.h> 21633fc86fSAlexander Aring #include <net/netns/ieee802154_6lowpan.h> 224db67e80SEric W. Biederman #include <net/netns/sctp.h> 2367019cc9SPavel Emelyanov #include <net/netns/dccp.h> 24f3c1a44aSGao feng #include <net/netns/netfilter.h> 258d870052SAlexey Dobriyan #include <net/netns/x_tables.h> 26dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 27dfdb8d79SAlexey Dobriyan #include <net/netns/conntrack.h> 28dfdb8d79SAlexey Dobriyan #endif 2999633ab2SPablo Neira Ayuso #include <net/netns/nftables.h> 30d62ddc21SAlexey Dobriyan #include <net/netns/xfrm.h> 310189197fSEric W. Biederman #include <net/netns/mpls.h> 328e8cda6dSMario Kicherer #include <net/netns/can.h> 33435d5f4bSAl Viro #include <linux/ns_common.h> 3404c52decSPablo Neira Ayuso #include <linux/idr.h> 3504c52decSPablo Neira Ayuso #include <linux/skbuff.h> 36a0a53c8bSDenis V. Lunev 37038e7332SEric W. Biederman struct user_namespace; 38457c4cbcSEric W. Biederman struct proc_dir_entry; 392774c7abSEric W. Biederman struct net_device; 4097c53cacSDenis V. Lunev struct sock; 411597fbc0SPavel Emelyanov struct ctl_table_header; 42dec827d1SPavel Emelyanov struct net_generic; 43134e6375SJohannes Berg struct sock; 442553d064SJulian Anastasov struct netns_ipvs; 451597fbc0SPavel Emelyanov 467c28bd0bSEric Dumazet 477c28bd0bSEric Dumazet #define NETDEV_HASHBITS 8 487c28bd0bSEric Dumazet #define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS) 497c28bd0bSEric Dumazet 505f256becSEric W. Biederman struct net { 51c122e14dSReshetova, Elena refcount_t passive; /* To decided when the network 525f256becSEric W. Biederman * namespace should be freed. 535f256becSEric W. Biederman */ 54273c28bcSKirill Tkhai refcount_t count; /* To decided when the network 55a685e089SAl Viro * namespace should be shut down. 56a685e089SAl Viro */ 578e602ce2SEric Dumazet spinlock_t rules_mod_lock; 588e602ce2SEric Dumazet 5933cf7c90SEric Dumazet atomic64_t cookie_gen; 6033cf7c90SEric Dumazet 615f256becSEric W. Biederman struct list_head list; /* list of network namespaces */ 622b035b39SEric W. Biederman struct list_head cleanup_list; /* namespaces on death row */ 6372ad937aSEric W. Biederman struct list_head exit_list; /* Use only net_mutex */ 64457c4cbcSEric W. Biederman 65038e7332SEric W. Biederman struct user_namespace *user_ns; /* Owning user namespace */ 6670328660SEric W. Biederman struct ucounts *ucounts; 67de133464SWANG Cong spinlock_t nsid_lock; 680c7aecd4SNicolas Dichtel struct idr netns_ids; 69038e7332SEric W. Biederman 70435d5f4bSAl Viro struct ns_common ns; 7198f842e6SEric W. Biederman 72457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net; 73457c4cbcSEric W. Biederman struct proc_dir_entry *proc_net_stat; 74881d966bSEric W. Biederman 7573455092SAl Viro #ifdef CONFIG_SYSCTL 7673455092SAl Viro struct ctl_table_set sysctls; 7773455092SAl Viro #endif 7895bdfccbSEric W. Biederman 798e602ce2SEric Dumazet struct sock *rtnl; /* rtnetlink socket */ 808e602ce2SEric Dumazet struct sock *genl_sock; 812774c7abSEric W. Biederman 82881d966bSEric W. Biederman struct list_head dev_base_head; 83881d966bSEric W. Biederman struct hlist_head *dev_name_head; 84881d966bSEric W. Biederman struct hlist_head *dev_index_head; 854e985adaSThomas Graf unsigned int dev_base_seq; /* protected by rtnl_mutex */ 86aa79e66eSPavel Emelyanov int ifindex; 8750624c93SEric W. Biederman unsigned int dev_unreg_count; 8897c53cacSDenis V. Lunev 895fd30ee7SDenis V. Lunev /* core fib_rules */ 905fd30ee7SDenis V. Lunev struct list_head rules_ops; 915fd30ee7SDenis V. Lunev 9204b1d4e5SIdo Schimmel struct list_head fib_notifier_ops; /* protected by net_mutex */ 93d12d01d6SDenis V. Lunev 948e602ce2SEric Dumazet struct net_device *loopback_dev; /* The loopback */ 958efa6e93SPavel Emelyanov struct netns_core core; 96852566f5SPavel Emelyanov struct netns_mib mib; 972aaef4e4SDenis V. Lunev struct netns_packet packet; 98a0a53c8bSDenis V. Lunev struct netns_unix unx; 998afd351cSPavel Emelyanov struct netns_ipv4 ipv4; 100dfd56b8bSEric Dumazet #if IS_ENABLED(CONFIG_IPV6) 101b0f159dbSDaniel Lezcano struct netns_ipv6 ipv6; 102b0f159dbSDaniel Lezcano #endif 103633fc86fSAlexander Aring #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 104633fc86fSAlexander Aring struct netns_ieee802154_lowpan ieee802154_lowpan; 105633fc86fSAlexander Aring #endif 1064db67e80SEric W. Biederman #if defined(CONFIG_IP_SCTP) || defined(CONFIG_IP_SCTP_MODULE) 1074db67e80SEric W. Biederman struct netns_sctp sctp; 1084db67e80SEric W. Biederman #endif 10967019cc9SPavel Emelyanov #if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE) 11067019cc9SPavel Emelyanov struct netns_dccp dccp; 11167019cc9SPavel Emelyanov #endif 1128d870052SAlexey Dobriyan #ifdef CONFIG_NETFILTER 113f3c1a44aSGao feng struct netns_nf nf; 1148d870052SAlexey Dobriyan struct netns_xt xt; 115dfdb8d79SAlexey Dobriyan #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) 116dfdb8d79SAlexey Dobriyan struct netns_ct ct; 117dfdb8d79SAlexey Dobriyan #endif 11899633ab2SPablo Neira Ayuso #if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE) 11999633ab2SPablo Neira Ayuso struct netns_nftables nft; 12099633ab2SPablo Neira Ayuso #endif 121c038a767SAmerigo Wang #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) 122c038a767SAmerigo Wang struct netns_nf_frag nf_frag; 123c038a767SAmerigo Wang #endif 124cd8c20b6SAlexey Dobriyan struct sock *nfnl; 125cd8c20b6SAlexey Dobriyan struct sock *nfnl_stash; 1263499abb2SAndreas Schultz #if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT) 1273499abb2SAndreas Schultz struct list_head nfnl_acct_list; 1283499abb2SAndreas Schultz #endif 12919576c94SPablo Neira #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT) 13019576c94SPablo Neira struct list_head nfct_timeout_list; 13119576c94SPablo Neira #endif 1328d870052SAlexey Dobriyan #endif 1333d23e349SJohannes Berg #ifdef CONFIG_WEXT_CORE 134b333b3d2SJohannes Berg struct sk_buff_head wext_nlevents; 135b333b3d2SJohannes Berg #endif 1361c87733dSEric Dumazet struct net_generic __rcu *gen; 1378e602ce2SEric Dumazet 1388e602ce2SEric Dumazet /* Note : following structs are cache line aligned */ 1398e602ce2SEric Dumazet #ifdef CONFIG_XFRM 1408e602ce2SEric Dumazet struct netns_xfrm xfrm; 1418e602ce2SEric Dumazet #endif 1428b4d14d8SJunweiZhang #if IS_ENABLED(CONFIG_IP_VS) 14361b1ab45SHans Schillstrom struct netns_ipvs *ipvs; 1448b4d14d8SJunweiZhang #endif 1450189197fSEric W. Biederman #if IS_ENABLED(CONFIG_MPLS) 1460189197fSEric W. Biederman struct netns_mpls mpls; 1470189197fSEric W. Biederman #endif 1488e8cda6dSMario Kicherer #if IS_ENABLED(CONFIG_CAN) 1498e8cda6dSMario Kicherer struct netns_can can; 1508e8cda6dSMario Kicherer #endif 15151d7cccfSAndrey Vagin struct sock *diag_nlsk; 1525aad1de5STimo Teräs atomic_t fnhe_genid; 1533859a271SKees Cook } __randomize_layout; 1545f256becSEric W. Biederman 155c0f39322SDenis V. Lunev #include <linux/seq_file_net.h> 156c0f39322SDenis V. Lunev 1574fabcd71SDaniel Lezcano /* Init's network namespace */ 1585f256becSEric W. Biederman extern struct net init_net; 159a4aa834aSDenis V. Lunev 160d727abcbSEric W. Biederman #ifdef CONFIG_NET_NS 161e67e16eaSJoe Perches struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns, 162e67e16eaSJoe Perches struct net *old_net); 163225c0a01SDenis V. Lunev 1647866cc57SFlorian Westphal void net_ns_barrier(void); 165d727abcbSEric W. Biederman #else /* CONFIG_NET_NS */ 166d727abcbSEric W. Biederman #include <linux/sched.h> 167d727abcbSEric W. Biederman #include <linux/nsproxy.h> 168038e7332SEric W. Biederman static inline struct net *copy_net_ns(unsigned long flags, 169038e7332SEric W. Biederman struct user_namespace *user_ns, struct net *old_net) 1709dd776b6SEric W. Biederman { 171d727abcbSEric W. Biederman if (flags & CLONE_NEWNET) 172d727abcbSEric W. Biederman return ERR_PTR(-EINVAL); 173d727abcbSEric W. Biederman return old_net; 1749dd776b6SEric W. Biederman } 1757866cc57SFlorian Westphal 1767866cc57SFlorian Westphal static inline void net_ns_barrier(void) {} 177d727abcbSEric W. Biederman #endif /* CONFIG_NET_NS */ 178225c0a01SDenis V. Lunev 179225c0a01SDenis V. Lunev 180225c0a01SDenis V. Lunev extern struct list_head net_namespace_list; 1819dd776b6SEric W. Biederman 182e67e16eaSJoe Perches struct net *get_net_ns_by_pid(pid_t pid); 1830f5258cdSStefan Hajnoczi struct net *get_net_ns_by_fd(int fd); 18430ffee84SJohannes Berg 185535d3ae9SRashika Kheria #ifdef CONFIG_SYSCTL 186535d3ae9SRashika Kheria void ipx_register_sysctl(void); 187535d3ae9SRashika Kheria void ipx_unregister_sysctl(void); 188535d3ae9SRashika Kheria #else 189535d3ae9SRashika Kheria #define ipx_register_sysctl() 190535d3ae9SRashika Kheria #define ipx_unregister_sysctl() 191535d3ae9SRashika Kheria #endif 192535d3ae9SRashika Kheria 193d4655795SPavel Emelyanov #ifdef CONFIG_NET_NS 194e67e16eaSJoe Perches void __put_net(struct net *net); 1955f256becSEric W. Biederman 1965f256becSEric W. Biederman static inline struct net *get_net(struct net *net) 1975f256becSEric W. Biederman { 198273c28bcSKirill Tkhai refcount_inc(&net->count); 1995f256becSEric W. Biederman return net; 2005f256becSEric W. Biederman } 2015f256becSEric W. Biederman 202077130c0SEric W. Biederman static inline struct net *maybe_get_net(struct net *net) 203077130c0SEric W. Biederman { 204077130c0SEric W. Biederman /* Used when we know struct net exists but we 205077130c0SEric W. Biederman * aren't guaranteed a previous reference count 206077130c0SEric W. Biederman * exists. If the reference count is zero this 207077130c0SEric W. Biederman * function fails and returns NULL. 208077130c0SEric W. Biederman */ 209273c28bcSKirill Tkhai if (!refcount_inc_not_zero(&net->count)) 210077130c0SEric W. Biederman net = NULL; 211077130c0SEric W. Biederman return net; 212077130c0SEric W. Biederman } 213077130c0SEric W. Biederman 2145f256becSEric W. Biederman static inline void put_net(struct net *net) 2155f256becSEric W. Biederman { 216273c28bcSKirill Tkhai if (refcount_dec_and_test(&net->count)) 2175f256becSEric W. Biederman __put_net(net); 2185f256becSEric W. Biederman } 2195f256becSEric W. Biederman 220878628fbSYOSHIFUJI Hideaki static inline 221878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 222878628fbSYOSHIFUJI Hideaki { 223878628fbSYOSHIFUJI Hideaki return net1 == net2; 224878628fbSYOSHIFUJI Hideaki } 225a685e089SAl Viro 2264ee806d5SDan Streetman static inline int check_net(const struct net *net) 2274ee806d5SDan Streetman { 2283e3ab9ccSDavid S. Miller return refcount_read(&net->count) != 0; 2294ee806d5SDan Streetman } 2304ee806d5SDan Streetman 231e67e16eaSJoe Perches void net_drop_ns(void *); 232a685e089SAl Viro 233d4655795SPavel Emelyanov #else 234b9f75f45SEric W. Biederman 235d4655795SPavel Emelyanov static inline struct net *get_net(struct net *net) 236d4655795SPavel Emelyanov { 237d4655795SPavel Emelyanov return net; 238d4655795SPavel Emelyanov } 239d4655795SPavel Emelyanov 240d4655795SPavel Emelyanov static inline void put_net(struct net *net) 241d4655795SPavel Emelyanov { 242d4655795SPavel Emelyanov } 243d4655795SPavel Emelyanov 244d4655795SPavel Emelyanov static inline struct net *maybe_get_net(struct net *net) 245d4655795SPavel Emelyanov { 246d4655795SPavel Emelyanov return net; 247d4655795SPavel Emelyanov } 248878628fbSYOSHIFUJI Hideaki 249878628fbSYOSHIFUJI Hideaki static inline 250878628fbSYOSHIFUJI Hideaki int net_eq(const struct net *net1, const struct net *net2) 251878628fbSYOSHIFUJI Hideaki { 252878628fbSYOSHIFUJI Hideaki return 1; 253878628fbSYOSHIFUJI Hideaki } 254a685e089SAl Viro 2554ee806d5SDan Streetman static inline int check_net(const struct net *net) 2564ee806d5SDan Streetman { 2574ee806d5SDan Streetman return 1; 2584ee806d5SDan Streetman } 2594ee806d5SDan Streetman 260a685e089SAl Viro #define net_drop_ns NULL 261d4655795SPavel Emelyanov #endif 2625f256becSEric W. Biederman 2635d1e4468SDenis V. Lunev 2640c5c9fb5SEric W. Biederman typedef struct { 2658f424b5fSEric Dumazet #ifdef CONFIG_NET_NS 2660c5c9fb5SEric W. Biederman struct net *net; 2678f424b5fSEric Dumazet #endif 2680c5c9fb5SEric W. Biederman } possible_net_t; 2690c5c9fb5SEric W. Biederman 2700c5c9fb5SEric W. Biederman static inline void write_pnet(possible_net_t *pnet, struct net *net) 2710c5c9fb5SEric W. Biederman { 2720c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2730c5c9fb5SEric W. Biederman pnet->net = net; 2740c5c9fb5SEric W. Biederman #endif 2750c5c9fb5SEric W. Biederman } 2760c5c9fb5SEric W. Biederman 2770c5c9fb5SEric W. Biederman static inline struct net *read_pnet(const possible_net_t *pnet) 2780c5c9fb5SEric W. Biederman { 2790c5c9fb5SEric W. Biederman #ifdef CONFIG_NET_NS 2800c5c9fb5SEric W. Biederman return pnet->net; 2810c5c9fb5SEric W. Biederman #else 2820c5c9fb5SEric W. Biederman return &init_net; 2830c5c9fb5SEric W. Biederman #endif 2840c5c9fb5SEric W. Biederman } 2855d1e4468SDenis V. Lunev 2865f256becSEric W. Biederman #define for_each_net(VAR) \ 2875f256becSEric W. Biederman list_for_each_entry(VAR, &net_namespace_list, list) 2885f256becSEric W. Biederman 28911a28d37SJohannes Berg #define for_each_net_rcu(VAR) \ 29011a28d37SJohannes Berg list_for_each_entry_rcu(VAR, &net_namespace_list, list) 29111a28d37SJohannes Berg 2924665079cSPavel Emelyanov #ifdef CONFIG_NET_NS 2934665079cSPavel Emelyanov #define __net_init 2944665079cSPavel Emelyanov #define __net_exit 295022cbae6SDenis V. Lunev #define __net_initdata 29604a6f82cSAndi Kleen #define __net_initconst 2974665079cSPavel Emelyanov #else 2984665079cSPavel Emelyanov #define __net_init __init 299bd721ea7SFabian Frederick #define __net_exit __ref 300022cbae6SDenis V. Lunev #define __net_initdata __initdata 30104a6f82cSAndi Kleen #define __net_initconst __initconst 3024665079cSPavel Emelyanov #endif 3035f256becSEric W. Biederman 3047a0877d4SNicolas Dichtel int peernet2id_alloc(struct net *net, struct net *peer); 30559324cf3SNicolas Dichtel int peernet2id(struct net *net, struct net *peer); 30659324cf3SNicolas Dichtel bool peernet_has_id(struct net *net, struct net *peer); 3070c7aecd4SNicolas Dichtel struct net *get_net_ns_by_id(struct net *net, int id); 3080c7aecd4SNicolas Dichtel 3095f256becSEric W. Biederman struct pernet_operations { 3105f256becSEric W. Biederman struct list_head list; 3115f256becSEric W. Biederman int (*init)(struct net *net); 3125f256becSEric W. Biederman void (*exit)(struct net *net); 31372ad937aSEric W. Biederman void (*exit_batch)(struct list_head *net_exit_list); 314c7d03a00SAlexey Dobriyan unsigned int *id; 315f875bae0SEric W. Biederman size_t size; 3165f256becSEric W. Biederman }; 3175f256becSEric W. Biederman 31817edde52SEric W. Biederman /* 31917edde52SEric W. Biederman * Use these carefully. If you implement a network device and it 32017edde52SEric W. Biederman * needs per network namespace operations use device pernet operations, 32117edde52SEric W. Biederman * otherwise use pernet subsys operations. 32217edde52SEric W. Biederman * 3234edf547bSJohannes Berg * Network interfaces need to be removed from a dying netns _before_ 3244edf547bSJohannes Berg * subsys notifiers can be called, as most of the network code cleanup 3254edf547bSJohannes Berg * (which is done from subsys notifiers) runs with the assumption that 3264edf547bSJohannes Berg * dev_remove_pack has been called so no new packets will arrive during 3274edf547bSJohannes Berg * and after the cleanup functions have been called. dev_remove_pack 3284edf547bSJohannes Berg * is not per namespace so instead the guarantee of no more packets 3294edf547bSJohannes Berg * arriving in a network namespace is provided by ensuring that all 3304edf547bSJohannes Berg * network devices and all sockets have left the network namespace 3314edf547bSJohannes Berg * before the cleanup methods are called. 33217edde52SEric W. Biederman * 33317edde52SEric W. Biederman * For the longest time the ipv4 icmp code was registered as a pernet 33417edde52SEric W. Biederman * device which caused kernel oops, and panics during network 33517edde52SEric W. Biederman * namespace cleanup. So please don't get this wrong. 33617edde52SEric W. Biederman */ 337e67e16eaSJoe Perches int register_pernet_subsys(struct pernet_operations *); 338e67e16eaSJoe Perches void unregister_pernet_subsys(struct pernet_operations *); 339e67e16eaSJoe Perches int register_pernet_device(struct pernet_operations *); 340e67e16eaSJoe Perches void unregister_pernet_device(struct pernet_operations *); 341f875bae0SEric W. Biederman 34295bdfccbSEric W. Biederman struct ctl_table; 34395bdfccbSEric W. Biederman struct ctl_table_header; 344d62c612eSPavel Emelyanov 3452ca794e5SEric W. Biederman #ifdef CONFIG_SYSCTL 346e67e16eaSJoe Perches int net_sysctl_init(void); 347e67e16eaSJoe Perches struct ctl_table_header *register_net_sysctl(struct net *net, const char *path, 348e67e16eaSJoe Perches struct ctl_table *table); 349e67e16eaSJoe Perches void unregister_net_sysctl_table(struct ctl_table_header *header); 35048c74958SEric W. Biederman #else 35148c74958SEric W. Biederman static inline int net_sysctl_init(void) { return 0; } 35248c74958SEric W. Biederman static inline struct ctl_table_header *register_net_sysctl(struct net *net, 35348c74958SEric W. Biederman const char *path, struct ctl_table *table) 35448c74958SEric W. Biederman { 35548c74958SEric W. Biederman return NULL; 35648c74958SEric W. Biederman } 35748c74958SEric W. Biederman static inline void unregister_net_sysctl_table(struct ctl_table_header *header) 35848c74958SEric W. Biederman { 35948c74958SEric W. Biederman } 36048c74958SEric W. Biederman #endif 36148c74958SEric W. Biederman 362ca4c3fc2Sfan.du static inline int rt_genid_ipv4(struct net *net) 363b42664f8SNicolas Dichtel { 364ca4c3fc2Sfan.du return atomic_read(&net->ipv4.rt_genid); 365b42664f8SNicolas Dichtel } 366b42664f8SNicolas Dichtel 367ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv4(struct net *net) 368b42664f8SNicolas Dichtel { 369ca4c3fc2Sfan.du atomic_inc(&net->ipv4.rt_genid); 370ca4c3fc2Sfan.du } 371ca4c3fc2Sfan.du 372705f1c86SHannes Frederic Sowa extern void (*__fib6_flush_trees)(struct net *net); 373ca4c3fc2Sfan.du static inline void rt_genid_bump_ipv6(struct net *net) 374ca4c3fc2Sfan.du { 375705f1c86SHannes Frederic Sowa if (__fib6_flush_trees) 376705f1c86SHannes Frederic Sowa __fib6_flush_trees(net); 377ca4c3fc2Sfan.du } 378ca4c3fc2Sfan.du 379599018a7SLuis R. Rodriguez #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) 380599018a7SLuis R. Rodriguez static inline struct netns_ieee802154_lowpan * 381599018a7SLuis R. Rodriguez net_ieee802154_lowpan(struct net *net) 382599018a7SLuis R. Rodriguez { 383599018a7SLuis R. Rodriguez return &net->ieee802154_lowpan; 384599018a7SLuis R. Rodriguez } 385599018a7SLuis R. Rodriguez #endif 386599018a7SLuis R. Rodriguez 387ca4c3fc2Sfan.du /* For callers who don't really care about whether it's IPv4 or IPv6 */ 388ca4c3fc2Sfan.du static inline void rt_genid_bump_all(struct net *net) 389ca4c3fc2Sfan.du { 390ca4c3fc2Sfan.du rt_genid_bump_ipv4(net); 391ca4c3fc2Sfan.du rt_genid_bump_ipv6(net); 392b42664f8SNicolas Dichtel } 39395bdfccbSEric W. Biederman 3945aad1de5STimo Teräs static inline int fnhe_genid(struct net *net) 3955aad1de5STimo Teräs { 3965aad1de5STimo Teräs return atomic_read(&net->fnhe_genid); 3975aad1de5STimo Teräs } 3985aad1de5STimo Teräs 3995aad1de5STimo Teräs static inline void fnhe_genid_bump(struct net *net) 4005aad1de5STimo Teräs { 4015aad1de5STimo Teräs atomic_inc(&net->fnhe_genid); 4025aad1de5STimo Teräs } 4035aad1de5STimo Teräs 4045f256becSEric W. Biederman #endif /* __NET_NET_NAMESPACE_H */ 405