Yuchung Cheng 40bc606379 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 <brakmo@fb.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Luke Hsiao <lukehsiao@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-24 14:16:40 +01:00
..
2021-07-01 13:19:48 -07:00
2021-06-11 13:32:46 -07:00
2019-01-23 11:18:00 -08:00
2021-08-03 11:50:22 +01:00
2021-07-29 12:18:11 +01:00
2020-05-05 13:23:29 -07:00
2019-12-09 10:36:44 -08:00
2020-06-22 21:12:44 -07:00
2021-07-27 20:11:44 +01:00
2021-03-30 13:29:39 -07:00
2021-07-27 13:05:56 +01:00
2021-09-18 14:20:00 +01:00
2019-12-09 10:36:44 -08:00
2020-03-04 13:25:55 -08:00
2021-05-17 15:29:35 -07:00
2021-08-04 10:01:26 +01:00
2019-04-22 21:47:25 -07:00
2019-10-05 16:29:00 -07:00
2021-08-03 13:05:26 +01:00
2021-06-29 11:28:21 -07:00
2020-06-18 20:46:23 -07:00
2019-12-09 10:28:43 -08:00