diff options
Diffstat (limited to 'include/net/net_namespace.h')
| -rw-r--r-- | include/net/net_namespace.h | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index ded434b032a4..a1202841aadd 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -26,6 +26,7 @@ struct net_device; struct sock; struct ctl_table_header; struct net_generic; +struct sock; struct net { atomic_t count; /* To decided when the network @@ -57,6 +58,7 @@ struct net { spinlock_t rules_mod_lock; struct sock *rtnl; /* rtnetlink socket */ + struct sock *genl_sock; struct netns_core core; struct netns_mib mib; @@ -78,6 +80,9 @@ struct net { #ifdef CONFIG_XFRM struct netns_xfrm xfrm; #endif +#ifdef CONFIG_WIRELESS_EXT + struct sk_buff_head wext_nlevents; +#endif struct net_generic *gen; }; @@ -106,6 +111,8 @@ static inline struct net *copy_net_ns(unsigned long flags, struct net *net_ns) extern struct list_head net_namespace_list; +extern struct net *get_net_ns_by_pid(pid_t pid); + #ifdef CONFIG_NET_NS extern void __put_net(struct net *net); @@ -208,6 +215,9 @@ static inline struct net *read_pnet(struct net * const *pnet) #define for_each_net(VAR) \ list_for_each_entry(VAR, &net_namespace_list, list) +#define for_each_net_rcu(VAR) \ + list_for_each_entry_rcu(VAR, &net_namespace_list, list) + #ifdef CONFIG_NET_NS #define __net_init #define __net_exit @@ -229,13 +239,15 @@ struct pernet_operations { * needs per network namespace operations use device pernet operations, * otherwise use pernet subsys operations. * - * This is critically important. Most of the network code cleanup - * runs with the assumption that dev_remove_pack has been called so no - * new packets will arrive during and after the cleanup functions have - * been called. dev_remove_pack is not per namespace so instead the - * guarantee of no more packets arriving in a network namespace is - * provided by ensuring that all network devices and all sockets have - * left the network namespace before the cleanup methods are called. + * Network interfaces need to be removed from a dying netns _before_ + * subsys notifiers can be called, as most of the network code cleanup + * (which is done from subsys notifiers) runs with the assumption that + * dev_remove_pack has been called so no new packets will arrive during + * and after the cleanup functions have been called. dev_remove_pack + * is not per namespace so instead the guarantee of no more packets + * arriving in a network namespace is provided by ensuring that all + * network devices and all sockets have left the network namespace + * before the cleanup methods are called. * * For the longest time the ipv4 icmp code was registered as a pernet * device which caused kernel oops, and panics during network |