xfrm: add rcu protection to sk->sk_policy[]
authorEric Dumazet <edumazet@google.com>
Tue, 8 Dec 2015 15:22:02 +0000 (07:22 -0800)
committerDavid S. Miller <davem@davemloft.net>
Sat, 12 Dec 2015 00:22:06 +0000 (19:22 -0500)
commitd188ba86dd07a72ebebfa22fe9cb0b0572e57740
tree3633c759d096b6fccc50e5641b1dcf8633a1dbf5
parent56f047305dd4b6b61771ac4f523718e4111052a8
xfrm: add rcu protection to sk->sk_policy[]

XFRM can deal with SYNACK messages, sent while listener socket
is not locked. We add proper rcu protection to __xfrm_sk_clone_policy()
and xfrm_sk_policy_lookup()

This might serve as the first step to remove xfrm.xfrm_policy_lock
use in fast path.

Fixes: fa76ce7328b2 ("inet: get rid of central tcp/dccp listener timer")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/sock.h
include/net/xfrm.h
net/core/sock.c
net/xfrm/xfrm_policy.c