Eric Dumazet 8c2320e84c 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>
2018-04-24 13:20:03 -04:00
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