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tcp: md5: only call tp->af_specific->md5_lookup() for md5 sockets
authorEric Dumazet <edumazet@google.com>
Mon, 23 Apr 2018 21:46:25 +0000 (14:46 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 24 Apr 2018 17:20:03 +0000 (13:20 -0400)
commit8c2320e84c193d4d42b8446986afa2797fb411e1
treea48a7aee60f3098f9a0f50296500556f1dec8b91tree
parenta06ac0d67d9fda7c255476c6391032319030045dcommit | diff
tcp: md5: only call tp->af_specific->md5_lookup() for md5 sockets

RETPOLINE made calls to tp->af_specific->md5_lookup() quite expensive,
given they have no result.
We can omit the calls for sockets that have no md5 keys.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_output.c diff | blob | history
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