tree 6836047a30acd0c55c00e11d2814b427fadca5a5
parent 0cf3a68a53829815db58461da1807728437c5de2
author Yafang Shao <laoar.shao@gmail.com> 1541938210 +0800
committer David S. Miller <davem@davemloft.net> 1541960658 -0800

tcp: minor optimization in tcp ack fast path processing

Bitwise operation is a little faster.
So I replace after() with using the flag FLAG_SND_UNA_ADVANCED as it is
already set before.

In addtion, there's another similar improvement in tcp_cwnd_reduction().

Cc: Joe Perches <joe@perches.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>