tcp: md5: only call tp->af_specific->md5_lookup() for md5 sockets

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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>

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Eric Dumazet 2018-04-23 14:46:25 -07:00 • committed by David S. Miller

parent a06ac0d67d

commit 8c2320e84c

1 changed files with 14 additions and 12 deletions

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net/ipv4/tcp_output.c

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