diff options
| author | Neal Cardwell <[email protected]> | 2015-02-06 16:04:41 -0500 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-02-08 01:03:13 -0800 |
| commit | 4fb17a6091674f469e8ac85dc770fbf9a9ba7cc8 (patch) | |
| tree | c01ae32365fd340ddec2a12682a43abd585aed97 /lib/memory-notifier-error-inject.c | |
| parent | f2b2c582e82429270d5818fbabe653f4359d7024 (diff) | |
tcp: mitigate ACK loops for connections as tcp_timewait_sock
Ensure that in state FIN_WAIT2 or TIME_WAIT, where the connection is
represented by a tcp_timewait_sock, we rate limit dupacks in response
to incoming packets (a) with TCP timestamps that fail PAWS checks, or
(b) with sequence numbers that are out of the acceptable window.
We do not send a dupack in response to out-of-window packets if it has
been less than sysctl_tcp_invalid_ratelimit (default 500ms) since we
last sent a dupack in response to an out-of-window packet.
Reported-by: Avery Fay <[email protected]>
Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: Yuchung Cheng <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions