diff options
Diffstat (limited to 'net/core/net_namespace.c')
| -rw-r--r-- | net/core/net_namespace.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index e39479f1c9a4..ae34ac818cda 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -56,7 +56,6 @@ static bool init_net_initialized; * outside. */ DECLARE_RWSEM(pernet_ops_rwsem); -EXPORT_SYMBOL_GPL(pernet_ops_rwsem); #define MIN_PERNET_OPS_ID \ ((sizeof(struct net_generic) + sizeof(void *) - 1) / sizeof(void *)) @@ -317,6 +316,7 @@ static __net_init void preinit_net_sysctl(struct net *net) */ net->core.sysctl_optmem_max = 128 * 1024; net->core.sysctl_txrehash = SOCK_TXREHASH_ENABLED; + net->core.sysctl_tstamp_allow_data = 1; } /* init code that must occur even if setup_net() is not called. */ @@ -334,6 +334,12 @@ static __net_init void preinit_net(struct net *net, struct user_namespace *user_ idr_init(&net->netns_ids); spin_lock_init(&net->nsid_lock); mutex_init(&net->ipv4.ra_mutex); + +#ifdef CONFIG_DEBUG_NET_SMALL_RTNL + mutex_init(&net->rtnl_mutex); + lock_set_cmp_fn(&net->rtnl_mutex, rtnl_net_lock_cmp_fn, NULL); +#endif + preinit_net_sysctl(net); } @@ -694,20 +700,18 @@ EXPORT_SYMBOL_GPL(get_net_ns); struct net *get_net_ns_by_fd(int fd) { - struct fd f = fdget(fd); - struct net *net = ERR_PTR(-EINVAL); + CLASS(fd, f)(fd); - if (!fd_file(f)) + if (fd_empty(f)) return ERR_PTR(-EBADF); if (proc_ns_file(fd_file(f))) { struct ns_common *ns = get_proc_ns(file_inode(fd_file(f))); if (ns->ops == &netns_operations) - net = get_net(container_of(ns, struct net, ns)); + return get_net(container_of(ns, struct net, ns)); } - fdput(f); - return net; + return ERR_PTR(-EINVAL); } EXPORT_SYMBOL_GPL(get_net_ns_by_fd); #endif @@ -1153,13 +1157,23 @@ static void __init netns_ipv4_struct_check(void) CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_early_demux); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, + sysctl_tcp_l3mdev_accept); + CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_reordering); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_rmem); - CACHELINE_ASSERT_GROUP_SIZE(struct netns_ipv4, netns_ipv4_read_rx, 18); + CACHELINE_ASSERT_GROUP_SIZE(struct netns_ipv4, netns_ipv4_read_rx, 22); } #endif +static const struct rtnl_msg_handler net_ns_rtnl_msg_handlers[] __initconst = { + {.msgtype = RTM_NEWNSID, .doit = rtnl_net_newid, + .flags = RTNL_FLAG_DOIT_UNLOCKED}, + {.msgtype = RTM_GETNSID, .doit = rtnl_net_getid, + .dumpit = rtnl_net_dumpid, + .flags = RTNL_FLAG_DOIT_UNLOCKED | RTNL_FLAG_DUMP_UNLOCKED}, +}; + void __init net_ns_init(void) { struct net_generic *ng; @@ -1197,11 +1211,7 @@ void __init net_ns_init(void) if (register_pernet_subsys(&net_ns_ops)) panic("Could not register network namespace subsystems"); - rtnl_register(PF_UNSPEC, RTM_NEWNSID, rtnl_net_newid, NULL, - RTNL_FLAG_DOIT_UNLOCKED); - rtnl_register(PF_UNSPEC, RTM_GETNSID, rtnl_net_getid, rtnl_net_dumpid, - RTNL_FLAG_DOIT_UNLOCKED | - RTNL_FLAG_DUMP_UNLOCKED); + rtnl_register_many(net_ns_rtnl_msg_handlers); } static void free_exit_list(struct pernet_operations *ops, struct list_head *net_exit_list) |