diff options
| -rw-r--r-- | net/core/net_namespace.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index b91c15b27fb2..eed5a28e8ee3 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -310,16 +310,26 @@ struct net *get_net_ns_by_id(const struct net *net, int id) EXPORT_SYMBOL_GPL(get_net_ns_by_id); /* init code that must occur even if setup_net() is not called. */ -static __net_init void preinit_net(struct net *net) +static __net_init void preinit_net(struct net *net, struct user_namespace *user_ns) { refcount_set(&net->passive, 1); + refcount_set(&net->ns.count, 1); + ref_tracker_dir_init(&net->refcnt_tracker, 128, "net refcnt"); ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net notrefcnt"); + + get_random_bytes(&net->hash_mix, sizeof(u32)); + net->dev_base_seq = 1; + net->user_ns = user_ns; + + idr_init(&net->netns_ids); + spin_lock_init(&net->nsid_lock); + mutex_init(&net->ipv4.ra_mutex); } /* * setup_net runs the initializers for the network namespace object. */ -static __net_init int setup_net(struct net *net, struct user_namespace *user_ns) +static __net_init int setup_net(struct net *net) { /* Must be called with pernet_ops_rwsem held */ const struct pernet_operations *ops, *saved_ops; @@ -327,18 +337,9 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns) LIST_HEAD(dev_kill_list); int error = 0; - refcount_set(&net->ns.count, 1); - ref_tracker_dir_init(&net->refcnt_tracker, 128, "net refcnt"); - - get_random_bytes(&net->hash_mix, sizeof(u32)); preempt_disable(); net->net_cookie = gen_cookie_next(&net_cookie); preempt_enable(); - net->dev_base_seq = 1; - net->user_ns = user_ns; - idr_init(&net->netns_ids); - spin_lock_init(&net->nsid_lock); - mutex_init(&net->ipv4.ra_mutex); list_for_each_entry(ops, &pernet_list, list) { error = ops_init(ops, net); @@ -497,7 +498,7 @@ struct net *copy_net_ns(unsigned long flags, goto dec_ucounts; } - preinit_net(net); + preinit_net(net, user_ns); net->ucounts = ucounts; get_user_ns(user_ns); @@ -505,7 +506,7 @@ struct net *copy_net_ns(unsigned long flags, if (rv < 0) goto put_userns; - rv = setup_net(net, user_ns); + rv = setup_net(net); up_read(&pernet_ops_rwsem); @@ -1199,10 +1200,10 @@ void __init net_ns_init(void) #ifdef CONFIG_KEYS init_net.key_domain = &init_net_key_domain; #endif - preinit_net(&init_net); + preinit_net(&init_net, &init_user_ns); down_write(&pernet_ops_rwsem); - if (setup_net(&init_net, &init_user_ns)) + if (setup_net(&init_net)) panic("Could not setup the initial network namespace"); init_net_initialized = true; |