tree 113a691ab55819f20b367cdeb8ba86440aa62177
parent 071d5080e33d6f24139e4213c2d9f97a2c21b602
author Yuchung Cheng <ycheng@google.com> 1436472990 -0700
committer David S. Miller <davem@davemloft.net> 1436476972 -0700

tcp: do not slow start when cwnd equals ssthresh

In the original design slow start is only used to raise cwnd
when cwnd is stricly below ssthresh. It makes little sense
to slow start when cwnd == ssthresh: especially
when hystart has set ssthresh in the initial ramp, or after
recovery when cwnd resets to ssthresh. Not doing so will
also help reduce the buffer bloat slightly.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Nandita Dukkipati <nanditad@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>