diff options
| author |   Yuchung Cheng <ycheng@google.com> | 2017-01-12 22:11:39 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-01-13 22:37:16 -0500 |
| commit | bec41a11dd3dc8c54f766b4f494140ca92ba7c10 (patch) | |
| tree | 62a888654cc55636c2ab85adf331db2361aae118 /net/ipv4/tcp_metrics.c | |
| parent | tcp: remove forward retransmit feature (diff) | |
| download | linux-dev-bec41a11dd3dc8c54f766b4f494140ca92ba7c10.tar.xz linux-dev-bec41a11dd3dc8c54f766b4f494140ca92ba7c10.zip | |
tcp: remove early retransmit
This patch removes the support of RFC5827 early retransmit (i.e.,
fast recovery on small inflight with <3 dupacks) because it is
subsumed by the new RACK loss detection. More specifically when
RACK receives DUPACKs, it'll arm a reordering timer to start fast
recovery after a quarter of (min)RTT, hence it covers the early
retransmit except RACK does not limit itself to specific inflight
or dupack numbers.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_metrics.c')
| -rw-r--r-- | net/ipv4/tcp_metrics.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index ba8f02d0f283..b9ed0d50aead 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -522,7 +522,6 @@ void tcp_init_metrics(struct sock *sk) val = tcp_metric_get(tm, TCP_METRIC_REORDERING); if (val && tp->reordering != val) { tcp_disable_fack(tp); - tcp_disable_early_retrans(tp); tp->reordering = val; } |