tree 8a6f3b84e190d48fa39c1921768fd08ce1e5d658
parent 52d6c8c6ca125872459054daa70f2f1c698c8e75
author Neal Cardwell <ncardwell@google.com> 1424457196 -0500
committer David S. Miller <davem@davemloft.net> 1424664431 -0500

tcp: fix tcp_should_expand_sndbuf() to use tcp_packets_in_flight()

tcp_should_expand_sndbuf() does not expand the send buffer if we have
filled the congestion window.

However, it should use tcp_packets_in_flight() instead of
tp->packets_out to make this check.

Testing has established that the difference matters a lot if there are
many SACKed packets, causing a needless performance shortfall.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@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>