Paolo Abeni
2e5d316882
udp: fix rx queue len reported by diag and proc interface
...
[ Upstream commit 6c206b20092a3623184cff9470dba75d21507874 ]
After commit 6b229cf77d ("udp: add batching to udp_rmem_release()")
the sk_rmem_alloc field does not measure exactly anymore the
receive queue length, because we batch the rmem release. The issue
is really apparent only after commit 0d4a6608f68c ("udp: do rmem bulk
free even if the rx sk queue is empty"): the user space can easily
check for an empty socket with not-0 queue length reported by the 'ss'
tool or the procfs interface.
We need to use a custom UDP helper to report the correct queue length,
taking into account the forward allocation deficit.
Reported-by: trevor.francis@46labs.com
Fixes: 6b229cf77d ("UDP: add batching to udp_rmem_release()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2018-06-26 08:06:28 +08:00
..
2017-07-11 06:08:58 -04:00
2018-04-19 08:56:19 +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
2017-04-05 10:15:20 +02:00
2018-02-25 11:07:47 +01:00
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
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
2018-01-31 14:03:44 +01:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2017-05-27 18:51:41 -04:00
2018-05-19 10:20:26 +02:00
2017-08-11 14:59:24 -07:00
2017-07-04 22:35:16 +01:00
2018-02-25 11:07:45 +01:00
2017-01-20 12:12:13 -05:00
2017-07-04 01:29:04 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
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
2018-05-09 09:51:48 +02:00
2017-08-22 14:29:30 -07:00
2017-11-02 11:10:55 +01:00
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
2017-01-25 16:00:33 +01:00
2017-07-04 01:29:04 -07:00
2018-04-29 11:33:13 +02:00
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
2018-02-22 15:42:23 +01:00
2018-05-16 10:10:24 +02:00
2017-11-02 11:10:55 +01:00
2017-09-01 17:42:05 -07:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2018-05-30 07:52:14 +02:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2018-05-30 07:52:14 +02:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2018-06-11 22:49:19 +02:00
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
2018-05-30 07:52:20 +02:00
2017-07-04 22:35:15 +01:00
2017-11-02 11:10:55 +01:00
2018-05-30 07:51:58 +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
2018-01-31 14:03:45 +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
2017-11-02 11:10:55 +01:00
2018-05-16 10:10:23 +02:00
2017-08-29 15:16:52 -07:00
2017-11-02 11:10:55 +01:00
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
2018-02-25 11:07:59 +01:00
2018-05-30 07:52:01 +02:00
2017-07-01 07:39:08 -07:00
2017-11-02 11:10:55 +01:00
2018-05-30 07:52:14 +02:00
2017-11-02 11:10:55 +01:00
2018-03-31 18:10:40 +02:00
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
2018-04-19 08:56:16 +02:00
2017-11-02 11:10:55 +01:00
2017-11-02 11:10:55 +01:00
2018-02-22 15:42:23 +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
2018-04-29 11:33:13 +02:00
2018-05-19 10:20:24 +02:00
2018-06-26 08:06:28 +08:00
2017-11-02 11:10:55 +01:00
2017-08-29 15:16:52 -07:00
2017-11-02 11:10:55 +01:00
2018-06-26 08:06:28 +08:00
2018-03-08 22:41:10 -08:00
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
2018-03-03 10:24:25 +01:00