Lines Matching refs:net
48 struct net init_net;
85 static int net_assign_generic(struct net *net, unsigned int id, void *data) in net_assign_generic() argument
91 old_ng = rcu_dereference_protected(net->gen, in net_assign_generic()
117 rcu_assign_pointer(net->gen, ng); in net_assign_generic()
122 static int ops_init(const struct pernet_operations *ops, struct net *net) in ops_init() argument
133 err = net_assign_generic(net, *ops->id, data); in ops_init()
139 err = ops->init(net); in ops_init()
144 ng = rcu_dereference_protected(net->gen, in ops_init()
159 struct net *net; in ops_pre_exit_list() local
162 list_for_each_entry(net, net_exit_list, exit_list) in ops_pre_exit_list()
163 ops->pre_exit(net); in ops_pre_exit_list()
170 struct net *net; in ops_exit_list() local
172 list_for_each_entry(net, net_exit_list, exit_list) { in ops_exit_list()
173 ops->exit(net); in ops_exit_list()
184 struct net *net; in ops_free_list() local
186 list_for_each_entry(net, net_exit_list, exit_list) in ops_free_list()
187 kfree(net_generic(net, *ops->id)); in ops_free_list()
192 static int alloc_netid(struct net *net, struct net *peer, int reqid) in alloc_netid() argument
201 return idr_alloc(&net->netns_ids, peer, min, max, GFP_ATOMIC); in alloc_netid()
210 static int net_eq_idr(int id, void *net, void *peer) in net_eq_idr() argument
212 if (net_eq(net, peer)) in net_eq_idr()
218 static int __peernet2id(const struct net *net, struct net *peer) in __peernet2id() argument
220 int id = idr_for_each(&net->netns_ids, net_eq_idr, peer); in __peernet2id()
231 static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid,
236 int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp) in peernet2id_alloc() argument
240 if (refcount_read(&net->ns.count) == 0) in peernet2id_alloc()
243 spin_lock_bh(&net->nsid_lock); in peernet2id_alloc()
244 id = __peernet2id(net, peer); in peernet2id_alloc()
246 spin_unlock_bh(&net->nsid_lock); in peernet2id_alloc()
256 spin_unlock_bh(&net->nsid_lock); in peernet2id_alloc()
260 id = alloc_netid(net, peer, -1); in peernet2id_alloc()
261 spin_unlock_bh(&net->nsid_lock); in peernet2id_alloc()
267 rtnl_net_notifyid(net, RTM_NEWNSID, id, 0, NULL, gfp); in peernet2id_alloc()
274 int peernet2id(const struct net *net, struct net *peer) in peernet2id() argument
279 id = __peernet2id(net, peer); in peernet2id()
289 bool peernet_has_id(const struct net *net, struct net *peer) in peernet_has_id() argument
291 return peernet2id(net, peer) >= 0; in peernet_has_id()
294 struct net *get_net_ns_by_id(const struct net *net, int id) in get_net_ns_by_id() argument
296 struct net *peer; in get_net_ns_by_id()
302 peer = idr_find(&net->netns_ids, id); in get_net_ns_by_id()
312 static __net_init void preinit_net(struct net *net) in preinit_net() argument
314 ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net notrefcnt"); in preinit_net()
320 static __net_init int setup_net(struct net *net, struct user_namespace *user_ns) in setup_net() argument
327 refcount_set(&net->ns.count, 1); in setup_net()
328 ref_tracker_dir_init(&net->refcnt_tracker, 128, "net refcnt"); in setup_net()
330 refcount_set(&net->passive, 1); in setup_net()
331 get_random_bytes(&net->hash_mix, sizeof(u32)); in setup_net()
333 net->net_cookie = gen_cookie_next(&net_cookie); in setup_net()
335 net->dev_base_seq = 1; in setup_net()
336 net->user_ns = user_ns; in setup_net()
337 idr_init(&net->netns_ids); in setup_net()
338 spin_lock_init(&net->nsid_lock); in setup_net()
339 mutex_init(&net->ipv4.ra_mutex); in setup_net()
342 error = ops_init(ops, net); in setup_net()
347 list_add_tail_rcu(&net->list, &net_namespace_list); in setup_net()
356 list_add(&net->exit_list, &net_exit_list); in setup_net()
375 static int __net_init net_defaults_init_net(struct net *net) in net_defaults_init_net() argument
377 net->core.sysctl_somaxconn = SOMAXCONN; in net_defaults_init_net()
378 net->core.sysctl_txrehash = SOCK_TXREHASH_ENABLED; in net_defaults_init_net()
411 static struct net *net_alloc(void) in net_alloc()
413 struct net *net = NULL; in net_alloc() local
420 net = kmem_cache_zalloc(net_cachep, GFP_KERNEL); in net_alloc()
421 if (!net) in net_alloc()
425 net->key_domain = kzalloc(sizeof(struct key_tag), GFP_KERNEL); in net_alloc()
426 if (!net->key_domain) in net_alloc()
428 refcount_set(&net->key_domain->usage, 1); in net_alloc()
431 rcu_assign_pointer(net->gen, ng); in net_alloc()
433 return net; in net_alloc()
437 kmem_cache_free(net_cachep, net); in net_alloc()
438 net = NULL; in net_alloc()
445 static void net_free(struct net *net) in net_free() argument
447 if (refcount_dec_and_test(&net->passive)) { in net_free()
448 kfree(rcu_access_pointer(net->gen)); in net_free()
451 ref_tracker_dir_exit(&net->notrefcnt_tracker); in net_free()
453 kmem_cache_free(net_cachep, net); in net_free()
459 struct net *net = (struct net *)p; in net_drop_ns() local
461 if (net) in net_drop_ns()
462 net_free(net); in net_drop_ns()
465 struct net *copy_net_ns(unsigned long flags, in copy_net_ns()
466 struct user_namespace *user_ns, struct net *old_net) in copy_net_ns()
469 struct net *net; in copy_net_ns() local
479 net = net_alloc(); in copy_net_ns()
480 if (!net) { in copy_net_ns()
485 preinit_net(net); in copy_net_ns()
486 refcount_set(&net->passive, 1); in copy_net_ns()
487 net->ucounts = ucounts; in copy_net_ns()
494 rv = setup_net(net, user_ns); in copy_net_ns()
501 key_remove_domain(net->key_domain); in copy_net_ns()
504 net_free(net); in copy_net_ns()
509 return net; in copy_net_ns()
521 void net_ns_get_ownership(const struct net *net, kuid_t *uid, kgid_t *gid) in net_ns_get_ownership() argument
523 if (net) { in net_ns_get_ownership()
524 kuid_t ns_root_uid = make_kuid(net->user_ns, 0); in net_ns_get_ownership()
525 kgid_t ns_root_gid = make_kgid(net->user_ns, 0); in net_ns_get_ownership()
539 static void unhash_nsid(struct net *net, struct net *last) in unhash_nsid() argument
541 struct net *tmp; in unhash_nsid()
552 id = __peernet2id(tmp, net); in unhash_nsid()
562 spin_lock_bh(&net->nsid_lock); in unhash_nsid()
563 idr_destroy(&net->netns_ids); in unhash_nsid()
564 spin_unlock_bh(&net->nsid_lock); in unhash_nsid()
572 struct net *net, *tmp, *last; in cleanup_net() local
583 llist_for_each_entry(net, net_kill_list, cleanup_list) in cleanup_net()
584 list_del_rcu(&net->list); in cleanup_net()
595 last = list_last_entry(&net_namespace_list, struct net, list); in cleanup_net()
598 llist_for_each_entry(net, net_kill_list, cleanup_list) { in cleanup_net()
599 unhash_nsid(net, last); in cleanup_net()
600 list_add_tail(&net->exit_list, &net_exit_list); in cleanup_net()
631 list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) { in cleanup_net()
632 list_del_init(&net->exit_list); in cleanup_net()
633 dec_net_namespaces(net->ucounts); in cleanup_net()
635 key_remove_domain(net->key_domain); in cleanup_net()
637 put_user_ns(net->user_ns); in cleanup_net()
638 net_free(net); in cleanup_net()
660 void __put_net(struct net *net) in __put_net() argument
662 ref_tracker_dir_exit(&net->refcnt_tracker); in __put_net()
664 if (llist_add(&net->cleanup_list, &cleanup_list)) in __put_net()
677 struct net *net; in get_net_ns() local
679 net = maybe_get_net(container_of(ns, struct net, ns)); in get_net_ns()
680 if (net) in get_net_ns()
681 return &net->ns; in get_net_ns()
686 struct net *get_net_ns_by_fd(int fd) in get_net_ns_by_fd()
689 struct net *net = ERR_PTR(-EINVAL); in get_net_ns_by_fd() local
697 net = get_net(container_of(ns, struct net, ns)); in get_net_ns_by_fd()
701 return net; in get_net_ns_by_fd()
706 struct net *get_net_ns_by_pid(pid_t pid) in get_net_ns_by_pid()
709 struct net *net; in get_net_ns_by_pid() local
712 net = ERR_PTR(-ESRCH); in get_net_ns_by_pid()
720 net = get_net(nsproxy->net_ns); in get_net_ns_by_pid()
724 return net; in get_net_ns_by_pid()
728 static __net_init int net_ns_net_init(struct net *net) in net_ns_net_init() argument
731 net->ns.ops = &netns_operations; in net_ns_net_init()
733 return ns_alloc_inum(&net->ns); in net_ns_net_init()
736 static __net_exit void net_ns_net_exit(struct net *net) in net_ns_net_exit() argument
738 ns_free_inum(&net->ns); in net_ns_net_exit()
757 struct net *net = sock_net(skb->sk); in rtnl_net_newid() local
760 struct net *peer; in rtnl_net_newid()
789 spin_lock_bh(&net->nsid_lock); in rtnl_net_newid()
790 if (__peernet2id(net, peer) >= 0) { in rtnl_net_newid()
791 spin_unlock_bh(&net->nsid_lock); in rtnl_net_newid()
799 err = alloc_netid(net, peer, nsid); in rtnl_net_newid()
800 spin_unlock_bh(&net->nsid_lock); in rtnl_net_newid()
802 rtnl_net_notifyid(net, RTM_NEWNSID, err, NETLINK_CB(skb).portid, in rtnl_net_newid()
901 struct net *net = sock_net(skb->sk); in rtnl_net_getid() local
908 struct net *peer, *target = net; in rtnl_net_getid()
923 peer = get_net_ns_by_id(net, nla_get_s32(tb[NETNSA_NSID])); in rtnl_net_getid()
950 fillargs.ref_nsid = peernet2id(net, peer); in rtnl_net_getid()
964 err = rtnl_unicast(msg, net, NETLINK_CB(skb).portid); in rtnl_net_getid()
977 struct net *tgt_net;
978 struct net *ref_net;
1025 struct net *net; in rtnl_valid_dump_net_req() local
1027 net = rtnl_get_net_ns_capable(sk, nla_get_s32(tb[i])); in rtnl_valid_dump_net_req()
1028 if (IS_ERR(net)) { in rtnl_valid_dump_net_req()
1032 return PTR_ERR(net); in rtnl_valid_dump_net_req()
1036 net_cb->tgt_net = net; in rtnl_valid_dump_net_req()
1081 static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid, in rtnl_net_notifyid() argument
1101 rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlh, gfp); in rtnl_net_notifyid()
1107 rtnl_set_sk_err(net, RTNLGRP_NSID, err); in rtnl_net_notifyid()
1115 net_cachep = kmem_cache_create("net_namespace", sizeof(struct net), in net_ns_init()
1163 struct net *net; in __register_pernet_operations() local
1172 for_each_net(net) { in __register_pernet_operations()
1173 error = ops_init(ops, net); in __register_pernet_operations()
1176 list_add_tail(&net->exit_list, &net_exit_list); in __register_pernet_operations()
1190 struct net *net; in __unregister_pernet_operations() local
1195 for_each_net(net) in __unregister_pernet_operations()
1196 list_add_tail(&net->exit_list, &net_exit_list); in __unregister_pernet_operations()
1363 struct net *net = NULL; in netns_get() local
1369 net = get_net(nsproxy->net_ns); in netns_get()
1372 return net ? &net->ns : NULL; in netns_get()
1375 static inline struct net *to_net_ns(struct ns_common *ns) in to_net_ns()
1377 return container_of(ns, struct net, ns); in to_net_ns()
1388 struct net *net = to_net_ns(ns); in netns_install() local
1390 if (!ns_capable(net->user_ns, CAP_SYS_ADMIN) || in netns_install()
1395 nsproxy->net_ns = get_net(net); in netns_install()