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| author | Jakub Kicinski <kuba@kernel.org> | 2026-04-09 05:32:05 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-09 05:32:05 +0300 |
| commit | 3723c3b656ad47bcdad8bc2918a3456f9662a6cc (patch) | |
| tree | 73c213378228be402922de586e7171290b51abc1 /include | |
| parent | 1a6b3965385a935ffd70275d162f68139bd86898 (diff) | |
| parent | 7272d8131a9dc9bda39ecbb639986889fee002a6 (diff) | |
| download | linux-3723c3b656ad47bcdad8bc2918a3456f9662a6cc.tar.xz | |
Merge branch 'mptcp-autotune-related-improvement'
Matthieu Baerts says:
====================
mptcp: autotune related improvement
Here are two patches from Paolo that have been crafted a couple of
months ago, but needed more validation because they were indirectly
causing instabilities in the sefltests. The root cause has been fixed in
'net' recently in commit 8c09412e584d ("selftests: mptcp: more stable
simult_flows tests").
These patches refactor the receive space and RTT estimator, overall
making DRS more correct while avoiding receive buffer drifting to
tcp_rmem[2], which in turn makes the throughput more stable and less
bursty, especially with high bandwidth and low delay environments.
Note that the first patch addresses a very old issue. 'net-next' is
targeted because the change is quite invasive and based on a recent
backlog refactor. The 'Fixes' tag is then there more as a FYI, because
backporting this patch will quickly be blocked due to large conflicts.
====================
Link: https://patch.msgid.link/20260407-net-next-mptcp-reduce-rbuf-v2-0-0d1d135bf6f6@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/trace/events/mptcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/events/mptcp.h b/include/trace/events/mptcp.h index 269d949b2025..04521acba483 100644 --- a/include/trace/events/mptcp.h +++ b/include/trace/events/mptcp.h @@ -219,7 +219,7 @@ TRACE_EVENT(mptcp_rcvbuf_grow, __be32 *p32; __entry->time = time; - __entry->rtt_us = msk->rcvq_space.rtt_us >> 3; + __entry->rtt_us = mptcp_rtt_us_est(msk) >> 3; __entry->copied = msk->rcvq_space.copied; __entry->inq = mptcp_inq_hint(sk); __entry->space = msk->rcvq_space.space; |