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authorEric Dumazet <eric.dumazet@gmail.com>2011-12-14 04:58:33 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-14 13:34:55 -0500
commitf943cbe6fb71d1389dd8684b9b4181e49f8e870c (patch)
treee895be7b8d2985e0123ad48500005d2a86eac101 /include/net/inet_timewait_sock.h
parentnet: ping: remove some sparse errors (diff)
downloadlinux-dev-f943cbe6fb71d1389dd8684b9b4181e49f8e870c.tar.xz
linux-dev-f943cbe6fb71d1389dd8684b9b4181e49f8e870c.zip
inet: remove rcu protection on tw_net
commit b099ce2602d806 (net: Batch inet_twsk_purge) added rcu protection on tw_net for no obvious reason. struct net are refcounted anyway since timewait sockets escape from rcu protected sections. tw_net stay valid for the whole timwait lifetime. This also removes a lot of sparse errors. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_timewait_sock.h')
-rw-r--r--include/net/inet_timewait_sock.h12
1 files changed, 2 insertions, 10 deletions
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index e8c25b981205..ba52c830a7a5 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -218,20 +218,12 @@ extern void inet_twsk_purge(struct inet_hashinfo *hashinfo,
static inline
struct net *twsk_net(const struct inet_timewait_sock *twsk)
{
-#ifdef CONFIG_NET_NS
- return rcu_dereference_raw(twsk->tw_net); /* protected by locking, */
- /* reference counting, */
- /* initialization, or RCU. */
-#else
- return &init_net;
-#endif
+ return read_pnet(&twsk->tw_net);
}
static inline
void twsk_net_set(struct inet_timewait_sock *twsk, struct net *net)
{
-#ifdef CONFIG_NET_NS
- rcu_assign_pointer(twsk->tw_net, net);
-#endif
+ write_pnet(&twsk->tw_net, net);
}
#endif /* _INET_TIMEWAIT_SOCK_ */