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author | Enke Chen <enchen@paloaltonetworks.com> | 2021-01-22 11:13:06 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-07 15:35:47 +0100 |
commit | 1960c3d40b6999dba2c7ca2ad333e394bfcc358d (patch) | |
tree | d51270601cfd6c9ad38d1e69af94a2d36adfb23e /fs/btrfs | |
parent | 55cb8e232f9ac72f432b081877faa18848058bd3 (diff) |
tcp: make TCP_USER_TIMEOUT accurate for zero window probes
commit 344db93ae3ee69fc137bd6ed89a8ff1bf5b0db08 upstream.
The TCP_USER_TIMEOUT is checked by the 0-window probe timer. As the
timer has backoff with a max interval of about two minutes, the
actual timeout for TCP_USER_TIMEOUT can be off by up to two minutes.
In this patch the TCP_USER_TIMEOUT is made more accurate by taking it
into account when computing the timer value for the 0-window probes.
This patch is similar to and builds on top of the one that made
TCP_USER_TIMEOUT accurate for RTOs in commit b701a99e431d ("tcp: Add
tcp_clamp_rto_to_user_timeout() helper to improve accuracy").
Fixes: 9721e709fa68 ("tcp: simplify window probe aborting on USER_TIMEOUT")
Signed-off-by: Enke Chen <enchen@paloaltonetworks.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20210122191306.GA99540@localhost.localdomain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs')
0 files changed, 0 insertions, 0 deletions