diff options
| author | Yuchung Cheng <[email protected]> | 2021-09-23 21:17:07 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2021-09-24 14:16:40 +0100 |
| commit | 40bc6063796ec77b6073861f9a1993be20d5befd (patch) | |
| tree | cc2672d4809c34d3f8318724bb557a9fb641ddca /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | ae98f40d32cd0ee6fc222e765734ffa497a0a95e (diff) | |
tcp: tracking packets with CE marks in BW rate sample
In order to track CE marks per rate sample (one round trip), TCP needs a
per-skb header field to record the tp->delivered_ce count when the skb
was sent. To make space, we replace the "last_in_flight" field which is
used exclusively for NV congestion control. The stat needed by NV can be
alternatively approximated by existing stats tcp_sock delivered and
mss_cache.
This patch counts the number of packets delivered which have CE marks in
the rate sample, using similar approach of delivery accounting.
Cc: Lawrence Brakmo <[email protected]>
Signed-off-by: Yuchung Cheng <[email protected]>
Acked-by: Neal Cardwell <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Luke Hsiao <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions