Yousuk Seung
f35318b289
tcp: invalidate rate samples during SACK reneging
...
[ Upstream commit d4761754b4 ]
Mark tcp_sock during a SACK reneging event and invalidate rate samples
while marked. Such rate samples may overestimate bw by including packets
that were SACKed before reneging.
< ack 6001 win 10000 sack 7001:38001
< ack 7001 win 0 sack 8001:38001 // Reneg detected
> seq 7001:8001 // RTO, SACK cleared.
< ack 38001 win 10000
In above example the rate sample taken after the last ack will count
7001-38001 as delivered while the actual delivery rate likely could
be much lower i.e. 7001-8001.
This patch adds a new field tcp_sock.sack_reneg and marks it when we
declare SACK reneging and entering TCP_CA_Loss, and unmarks it after
the last rate sample was taken before moving back to TCP_CA_Open. This
patch also invalidates rate samples taken while tcp_sock.is_sack_reneg
is set.
Fixes: b9f64820fb ("tcp: track data delivery rate for a TCP connection")
Signed-off-by: Yousuk Seung <ysseung@google.com >
Signed-off-by: Neal Cardwell <ncardwell@google.com >
Signed-off-by: Yuchung Cheng <ycheng@google.com >
Acked-by: Soheil Hassas Yeganeh <soheil@google.com >
Acked-by: Eric Dumazet <edumazet@google.com >
Acked-by: Priyaranjan Jha <priyarjha@google.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2018-01-02 20:31:09 +01:00
..
2017-07-11 06:08:58 -04:00
2017-09-01 22:49:47 +02:00
2015-02-20 17:35:14 -05:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-04-05 10:15:20 +02:00
2016-02-11 03:54:14 -05:00
2017-10-29 18:03:24 +09:00
2017-11-02 11:10:55 +01:00
2017-04-12 22:02:36 +02:00
2017-11-09 10:03:09 +09:00
2017-11-02 11:10:55 +01:00
2015-09-17 13:20:05 +02:00
2017-08-29 10:55:20 +01:00
2017-11-02 11:10:55 +01:00
2017-04-24 12:35:56 -04:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2016-02-09 04:45:49 -05:00
2014-11-10 13:27:49 -05:00
2017-05-27 18:51:41 -04:00
2017-08-11 14:21:42 -07:00
2017-08-11 14:59:24 -07:00
2017-07-04 22:35:16 +01:00
2017-06-13 11:04:37 +02:00
2016-07-08 12:20:57 +02:00
2017-01-20 12:12:13 -05:00
2017-07-04 01:29:04 -07:00
2016-04-19 20:09:25 -04:00
2016-04-25 16:44:27 -04:00
2016-06-25 12:19:35 -04:00
2016-04-25 16:44:27 -04:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2015-03-06 21:50:02 -05:00
2017-08-31 14:42:19 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-09-05 11:53:34 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-08-22 14:29:30 -07:00
2017-11-02 11:10:55 +01:00
2015-09-23 15:33:15 -07:00
2017-09-01 20:33:42 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-10-18 09:40:35 +02:00
2016-09-30 13:29:21 +02:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2016-04-27 22:48:25 -04:00
2017-01-25 16:00:33 +01:00
2016-01-04 20:40:41 +01:00
2017-07-04 01:29:04 -07:00
2017-11-02 11:10:55 +01:00
2015-12-15 23:25:20 -05:00
2017-01-18 13:04:28 -05:00
2017-08-07 11:39:22 -07:00
2017-11-02 11:10:55 +01:00
2017-06-15 12:12:40 -04:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-08-07 11:39:21 -07:00
2017-10-26 17:41:32 +09:00
2016-12-29 11:38:31 -05:00
2017-11-02 11:10:55 +01:00
2016-03-13 23:55:13 -04:00
2017-09-01 17:42:05 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-08-03 15:35:59 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2018-01-02 20:31:06 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-12-17 15:07:58 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2016-08-17 19:36:23 -04:00
2016-10-13 12:05:26 -04:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2014-12-10 15:21:24 -05:00
2015-05-11 10:50:17 -04:00
2014-12-10 15:21:24 -05:00
2017-07-04 22:35:15 +01:00
2017-11-02 11:10:55 +01:00
2017-09-05 11:28:43 +02:00
2016-07-08 13:23:12 +02:00
2017-11-02 11:10:55 +01:00
2017-04-01 20:21:44 -07:00
2016-10-03 02:00:22 -04:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-07-01 07:39:09 -07:00
2017-11-02 11:10:55 +01:00
2015-12-08 22:02:33 -05:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2016-07-08 12:20:57 +02:00
2017-08-29 15:16:52 -07:00
2017-11-02 11:10:55 +01:00
2016-03-23 22:09:58 -04:00
2017-11-09 10:03:09 +09:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-10-01 03:55:47 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-08-07 11:39:21 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2014-12-17 11:49:55 +01:00
2017-07-01 07:39:08 -07:00
2017-11-02 11:10:55 +01:00
2017-10-01 03:55:47 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 10:04:46 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2016-11-09 20:40:06 -05:00
2017-08-25 17:10:23 -07:00
2017-11-02 11:10:55 +01:00
2016-04-28 11:49:45 -04:00
2017-11-02 11:10:55 +01:00
2017-12-17 15:07:57 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-10-25 10:37:11 +09:00
2017-08-07 14:48:48 -07:00
2015-03-12 22:58:12 -04:00
2018-01-02 20:31:09 +01:00
2015-07-09 15:12:20 -07:00
2017-11-30 08:40:40 +00:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-08-29 15:16:52 -07:00
2017-11-02 11:10:55 +01:00
2017-10-01 03:55:47 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2014-09-05 17:35:28 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00