Lines Matching refs:net
48 struct net init_net;
82 static int net_assign_generic(struct net *net, unsigned int id, void *data) in net_assign_generic() argument
88 old_ng = rcu_dereference_protected(net->gen, in net_assign_generic()
114 rcu_assign_pointer(net->gen, ng); in net_assign_generic()
119 static int ops_init(const struct pernet_operations *ops, struct net *net) in ops_init() argument
130 err = net_assign_generic(net, *ops->id, data); in ops_init()
136 err = ops->init(net); in ops_init()
141 ng = rcu_dereference_protected(net->gen, in ops_init()
156 struct net *net; in ops_pre_exit_list() local
159 list_for_each_entry(net, net_exit_list, exit_list) in ops_pre_exit_list()
160 ops->pre_exit(net); in ops_pre_exit_list()
170 struct net *net; in ops_exit_rtnl_list() local
174 list_for_each_entry(net, net_exit_list, exit_list) { in ops_exit_rtnl_list()
175 __rtnl_net_lock(net); in ops_exit_rtnl_list()
180 ops->exit_rtnl(net, &dev_kill_list); in ops_exit_rtnl_list()
183 __rtnl_net_unlock(net); in ops_exit_rtnl_list()
195 struct net *net; in ops_exit_list() local
197 list_for_each_entry(net, net_exit_list, exit_list) { in ops_exit_list()
198 ops->exit(net); in ops_exit_list()
210 struct net *net; in ops_free_list() local
213 list_for_each_entry(net, net_exit_list, exit_list) in ops_free_list()
214 kfree(net_generic(net, *ops->id)); in ops_free_list()
269 static int alloc_netid(struct net *net, struct net *peer, int reqid) in alloc_netid() argument
278 return idr_alloc(&net->netns_ids, peer, min, max, GFP_ATOMIC); in alloc_netid()
287 static int net_eq_idr(int id, void *net, void *peer) in net_eq_idr() argument
289 if (net_eq(net, peer)) in net_eq_idr()
295 static int __peernet2id(const struct net *net, struct net *peer) in __peernet2id() argument
297 int id = idr_for_each(&net->netns_ids, net_eq_idr, peer); in __peernet2id()
308 static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid,
313 int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp) in peernet2id_alloc() argument
317 if (refcount_read(&net->ns.count) == 0) in peernet2id_alloc()
320 spin_lock(&net->nsid_lock); in peernet2id_alloc()
321 id = __peernet2id(net, peer); in peernet2id_alloc()
323 spin_unlock(&net->nsid_lock); in peernet2id_alloc()
333 spin_unlock(&net->nsid_lock); in peernet2id_alloc()
337 id = alloc_netid(net, peer, -1); in peernet2id_alloc()
338 spin_unlock(&net->nsid_lock); in peernet2id_alloc()
344 rtnl_net_notifyid(net, RTM_NEWNSID, id, 0, NULL, gfp); in peernet2id_alloc()
351 int peernet2id(const struct net *net, struct net *peer) in peernet2id() argument
356 id = __peernet2id(net, peer); in peernet2id()
366 bool peernet_has_id(const struct net *net, struct net *peer) in peernet_has_id() argument
368 return peernet2id(net, peer) >= 0; in peernet_has_id()
371 struct net *get_net_ns_by_id(const struct net *net, int id) in get_net_ns_by_id() argument
373 struct net *peer; in get_net_ns_by_id()
379 peer = idr_find(&net->netns_ids, id); in get_net_ns_by_id()
388 static __net_init void preinit_net_sysctl(struct net *net) in preinit_net_sysctl() argument
390 net->core.sysctl_somaxconn = SOMAXCONN; in preinit_net_sysctl()
394 net->core.sysctl_optmem_max = 128 * 1024; in preinit_net_sysctl()
395 net->core.sysctl_txrehash = SOCK_TXREHASH_ENABLED; in preinit_net_sysctl()
396 net->core.sysctl_tstamp_allow_data = 1; in preinit_net_sysctl()
400 static __net_init void preinit_net(struct net *net, struct user_namespace *user_ns) in preinit_net() argument
402 refcount_set(&net->passive, 1); in preinit_net()
403 refcount_set(&net->ns.count, 1); in preinit_net()
404 ref_tracker_dir_init(&net->refcnt_tracker, 128, "net_refcnt"); in preinit_net()
405 ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net_notrefcnt"); in preinit_net()
407 get_random_bytes(&net->hash_mix, sizeof(u32)); in preinit_net()
408 net->dev_base_seq = 1; in preinit_net()
409 net->user_ns = user_ns; in preinit_net()
411 idr_init(&net->netns_ids); in preinit_net()
412 spin_lock_init(&net->nsid_lock); in preinit_net()
413 mutex_init(&net->ipv4.ra_mutex); in preinit_net()
416 mutex_init(&net->rtnl_mutex); in preinit_net()
417 lock_set_cmp_fn(&net->rtnl_mutex, rtnl_net_lock_cmp_fn, NULL); in preinit_net()
420 INIT_LIST_HEAD(&net->ptype_all); in preinit_net()
421 INIT_LIST_HEAD(&net->ptype_specific); in preinit_net()
422 preinit_net_sysctl(net); in preinit_net()
428 static __net_init int setup_net(struct net *net) in setup_net() argument
435 net->net_cookie = atomic64_inc_return(&net_aligned_data.net_cookie); in setup_net()
438 error = ops_init(ops, net); in setup_net()
443 list_add_tail_rcu(&net->list, &net_namespace_list); in setup_net()
452 list_add(&net->exit_list, &net_exit_list); in setup_net()
472 static struct net *net_alloc(void) in net_alloc()
474 struct net *net = NULL; in net_alloc() local
481 net = kmem_cache_zalloc(net_cachep, GFP_KERNEL); in net_alloc()
482 if (!net) in net_alloc()
486 net->key_domain = kzalloc(sizeof(struct key_tag), GFP_KERNEL); in net_alloc()
487 if (!net->key_domain) in net_alloc()
489 refcount_set(&net->key_domain->usage, 1); in net_alloc()
492 rcu_assign_pointer(net->gen, ng); in net_alloc()
494 return net; in net_alloc()
498 kmem_cache_free(net_cachep, net); in net_alloc()
499 net = NULL; in net_alloc()
511 struct net *net, *next; in net_complete_free() local
516 llist_for_each_entry_safe(net, next, kill_list, defer_free_list) in net_complete_free()
517 kmem_cache_free(net_cachep, net); in net_complete_free()
521 void net_passive_dec(struct net *net) in net_passive_dec() argument
523 if (refcount_dec_and_test(&net->passive)) { in net_passive_dec()
524 kfree(rcu_access_pointer(net->gen)); in net_passive_dec()
527 ref_tracker_dir_exit(&net->notrefcnt_tracker); in net_passive_dec()
530 llist_add(&net->defer_free_list, &defer_free_list); in net_passive_dec()
536 struct net *net = (struct net *)p; in net_drop_ns() local
538 if (net) in net_drop_ns()
539 net_passive_dec(net); in net_drop_ns()
542 struct net *copy_net_ns(unsigned long flags, in copy_net_ns()
543 struct user_namespace *user_ns, struct net *old_net) in copy_net_ns()
546 struct net *net; in copy_net_ns() local
556 net = net_alloc(); in copy_net_ns()
557 if (!net) { in copy_net_ns()
562 preinit_net(net, user_ns); in copy_net_ns()
563 net->ucounts = ucounts; in copy_net_ns()
570 rv = setup_net(net); in copy_net_ns()
577 key_remove_domain(net->key_domain); in copy_net_ns()
580 net_passive_dec(net); in copy_net_ns()
585 return net; in copy_net_ns()
597 void net_ns_get_ownership(const struct net *net, kuid_t *uid, kgid_t *gid) in net_ns_get_ownership() argument
599 if (net) { in net_ns_get_ownership()
600 kuid_t ns_root_uid = make_kuid(net->user_ns, 0); in net_ns_get_ownership()
601 kgid_t ns_root_gid = make_kgid(net->user_ns, 0); in net_ns_get_ownership()
615 static void unhash_nsid(struct net *net, struct net *last) in unhash_nsid() argument
617 struct net *tmp; in unhash_nsid()
628 id = __peernet2id(tmp, net); in unhash_nsid()
638 spin_lock(&net->nsid_lock); in unhash_nsid()
639 idr_destroy(&net->netns_ids); in unhash_nsid()
640 spin_unlock(&net->nsid_lock); in unhash_nsid()
650 struct net *net, *tmp, *last; in cleanup_net() local
662 llist_for_each_entry(net, net_kill_list, cleanup_list) in cleanup_net()
663 list_del_rcu(&net->list); in cleanup_net()
674 last = list_last_entry(&net_namespace_list, struct net, list); in cleanup_net()
677 llist_for_each_entry(net, net_kill_list, cleanup_list) { in cleanup_net()
678 unhash_nsid(net, last); in cleanup_net()
679 list_add_tail(&net->exit_list, &net_exit_list); in cleanup_net()
694 list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) { in cleanup_net()
695 list_del_init(&net->exit_list); in cleanup_net()
696 dec_net_namespaces(net->ucounts); in cleanup_net()
698 key_remove_domain(net->key_domain); in cleanup_net()
700 put_user_ns(net->user_ns); in cleanup_net()
701 net_passive_dec(net); in cleanup_net()
724 void __put_net(struct net *net) in __put_net() argument
726 ref_tracker_dir_exit(&net->refcnt_tracker); in __put_net()
728 if (llist_add(&net->cleanup_list, &cleanup_list)) in __put_net()
741 struct net *net; in get_net_ns() local
743 net = maybe_get_net(container_of(ns, struct net, ns)); in get_net_ns()
744 if (net) in get_net_ns()
745 return &net->ns; in get_net_ns()
750 struct net *get_net_ns_by_fd(int fd) in get_net_ns_by_fd()
760 return get_net(container_of(ns, struct net, ns)); in get_net_ns_by_fd()
768 struct net *get_net_ns_by_pid(pid_t pid) in get_net_ns_by_pid()
771 struct net *net; in get_net_ns_by_pid() local
774 net = ERR_PTR(-ESRCH); in get_net_ns_by_pid()
782 net = get_net(nsproxy->net_ns); in get_net_ns_by_pid()
786 return net; in get_net_ns_by_pid()
791 static void net_ns_net_debugfs(struct net *net) in net_ns_net_debugfs() argument
793 ref_tracker_dir_symlink(&net->refcnt_tracker, "netns-%llx-%u-refcnt", in net_ns_net_debugfs()
794 net->net_cookie, net->ns.inum); in net_ns_net_debugfs()
795 ref_tracker_dir_symlink(&net->notrefcnt_tracker, "netns-%llx-%u-notrefcnt", in net_ns_net_debugfs()
796 net->net_cookie, net->ns.inum); in net_ns_net_debugfs()
808 static void net_ns_net_debugfs(struct net *net) in net_ns_net_debugfs() argument
813 static __net_init int net_ns_net_init(struct net *net) in net_ns_net_init() argument
816 net->ns.ops = &netns_operations; in net_ns_net_init()
818 net->ns.inum = PROC_NET_INIT_INO; in net_ns_net_init()
819 if (net != &init_net) { in net_ns_net_init()
820 int ret = ns_alloc_inum(&net->ns); in net_ns_net_init()
824 net_ns_net_debugfs(net); in net_ns_net_init()
828 static __net_exit void net_ns_net_exit(struct net *net) in net_ns_net_exit() argument
834 ns_free_inum(&net->ns); in net_ns_net_exit()
853 struct net *net = sock_net(skb->sk); in rtnl_net_newid() local
856 struct net *peer; in rtnl_net_newid()
885 spin_lock(&net->nsid_lock); in rtnl_net_newid()
886 if (__peernet2id(net, peer) >= 0) { in rtnl_net_newid()
887 spin_unlock(&net->nsid_lock); in rtnl_net_newid()
895 err = alloc_netid(net, peer, nsid); in rtnl_net_newid()
896 spin_unlock(&net->nsid_lock); in rtnl_net_newid()
898 rtnl_net_notifyid(net, RTM_NEWNSID, err, NETLINK_CB(skb).portid, in rtnl_net_newid()
997 struct net *net = sock_net(skb->sk); in rtnl_net_getid() local
1004 struct net *peer, *target = net; in rtnl_net_getid()
1019 peer = get_net_ns_by_id(net, nla_get_s32(tb[NETNSA_NSID])); in rtnl_net_getid()
1046 fillargs.ref_nsid = peernet2id(net, peer); in rtnl_net_getid()
1060 err = rtnl_unicast(msg, net, NETLINK_CB(skb).portid); in rtnl_net_getid()
1073 struct net *tgt_net;
1074 struct net *ref_net;
1121 struct net *net; in rtnl_valid_dump_net_req() local
1123 net = rtnl_get_net_ns_capable(sk, nla_get_s32(tb[i])); in rtnl_valid_dump_net_req()
1124 if (IS_ERR(net)) { in rtnl_valid_dump_net_req()
1128 return PTR_ERR(net); in rtnl_valid_dump_net_req()
1132 net_cb->tgt_net = net; in rtnl_valid_dump_net_req()
1177 static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid, in rtnl_net_notifyid() argument
1197 rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlh, gfp); in rtnl_net_notifyid()
1203 rtnl_set_sk_err(net, RTNLGRP_NSID, err); in rtnl_net_notifyid()
1266 net_cachep = kmem_cache_create("net_namespace", sizeof(struct net), in net_ns_init()
1305 struct net *net; in __register_pernet_operations() local
1313 for_each_net(net) { in __register_pernet_operations()
1314 error = ops_init(ops, net); in __register_pernet_operations()
1317 list_add_tail(&net->exit_list, &net_exit_list); in __register_pernet_operations()
1332 struct net *net; in __unregister_pernet_operations() local
1335 for_each_net(net) in __unregister_pernet_operations()
1336 list_add_tail(&net->exit_list, &net_exit_list); in __unregister_pernet_operations()
1508 struct net *net = NULL; in netns_get() local
1514 net = get_net(nsproxy->net_ns); in netns_get()
1517 return net ? &net->ns : NULL; in netns_get()
1520 static inline struct net *to_net_ns(struct ns_common *ns) in to_net_ns()
1522 return container_of(ns, struct net, ns); in to_net_ns()
1533 struct net *net = to_net_ns(ns); in netns_install() local
1535 if (!ns_capable(net->user_ns, CAP_SYS_ADMIN) || in netns_install()
1540 nsproxy->net_ns = get_net(net); in netns_install()