diff options
| author | Yuchung Cheng <[email protected]> | 2017-08-04 03:38:51 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-08-07 04:25:10 +0000 |
| commit | 4faf783998b8cb88294e9df89032f473f8771b78 (patch) | |
| tree | 0ad450f18cbf6c23f23e9f181a4d4ee5c6a99b7a /net/ipv4/tcp_scalable.c | |
| parent | net: systemport: Support 64bit statistics (diff) | |
| download | kernel-4faf783998b8cb88294e9df89032f473f8771b78.tar.gz kernel-4faf783998b8cb88294e9df89032f473f8771b78.zip | |
tcp: fix cwnd undo in Reno and HTCP congestion controls
Using ssthresh to revert cwnd is less reliable when ssthresh is
bounded to 2 packets. This patch uses an existing variable in TCP
"prior_cwnd" that snapshots the cwnd right before entering fast
recovery and RTO recovery in Reno. This fixes the issue discussed
in netdev thread: "A buggy behavior for Linux TCP Reno and HTCP"
https://www.spinics.net/lists/netdev/msg444955.html
Suggested-by: Neal Cardwell <[email protected]>
Reported-by: Wei Sun <[email protected]>
Signed-off-by: Yuchung Cheng <[email protected]>
Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv4/tcp_scalable.c')
0 files changed, 0 insertions, 0 deletions