diff options
| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-25 20:26:21 +0300 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-25 22:39:55 +0300 |
| commit | 3b1e0a655f8eba44ab1ee2a1068d169ccfb853b9 (patch) | |
| tree | 09edb35f32ebcfb1b4dad904425128a110ef16ee /include/net/sock.h | |
| parent | c346dca10840a874240c78efe3f39acf4312a1f2 (diff) | |
| download | linux-3b1e0a655f8eba44ab1ee2a1068d169ccfb853b9.tar.xz | |
[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.
Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index b433b1ed203d..7e0d4a0c4d12 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -126,7 +126,9 @@ struct sock_common { atomic_t skc_refcnt; unsigned int skc_hash; struct proto *skc_prot; +#ifdef CONFIG_NET_NS struct net *skc_net; +#endif }; /** @@ -1345,6 +1347,24 @@ static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_e } #endif +static inline +struct net *sock_net(const struct sock *sk) +{ +#ifdef CONFIG_NET_NS + return sk->sk_net; +#else + return &init_net; +#endif +} + +static inline +void sock_net_set(struct sock *sk, const struct net *net) +{ +#ifdef CONFIG_NET_NS + sk->sk_net = net; +#endif +} + /* * Kernel sockets, f.e. rtnl or icmp_socket, are a part of a namespace. * They should not hold a referrence to a namespace in order to allow @@ -1353,8 +1373,8 @@ static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_e */ static inline void sk_change_net(struct sock *sk, struct net *net) { - put_net(sk->sk_net); - sk->sk_net = net; + put_net(sock_net(sk)); + sock_net_set(sk, net); } extern void sock_enable_timestamp(struct sock *sk); |