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| author | Yuchung Cheng <ycheng@google.com> | 2022-05-19 03:34:10 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-20 04:49:50 +0300 |
| commit | 9ad084d666194c20a30e3589cbfaf971dae55c24 (patch) | |
| tree | 59657475684dfced6cdf223b3eddbdea038396dd /net/mptcp/pm.c | |
| parent | 7ebe52f555de21a1f239b963aa49972a6916a49a (diff) | |
| download | linux-9ad084d666194c20a30e3589cbfaf971dae55c24.tar.xz | |
tcp: improve PRR loss recovery
This patch improves TCP PRR loss recovery behavior for a corner
case. Previously during PRR conservation-bound mode, it strictly
sends the amount equals to the amount newly acked or s/acked.
The patch changes s.t. PRR may send additional amount that was banked
previously (e.g. application-limited) in the conservation-bound
mode, similar to the slow-start mode. This unifies and simplifies the
algorithm further and may improve the recovery latency. This change
still follow the general packet conservation design principle and
always keep inflight/cwnd below the slow start threshold set
by the congestion control module.
PRR is described in RFC 6937. We'll include this change in the
latest revision rfc6937-bis as well.
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220519003410.2531936-1-ycheng@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/pm.c')
0 files changed, 0 insertions, 0 deletions