diff options
| author | Kevin Yang <yyd@google.com> | 2024-06-03 23:30:54 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-06-05 14:42:54 +0200 |
| commit | f086edef71be7174a16c1ed67ac65a085cda28b1 (patch) | |
| tree | 3af89709786e212616a07d06b4c0a184efdfce49 /Documentation/networking | |
| parent | tcp: derive delack_max with tcp_rto_min helper (diff) | |
| download | linux-f086edef71be7174a16c1ed67ac65a085cda28b1.tar.xz linux-f086edef71be7174a16c1ed67ac65a085cda28b1.zip | |
tcp: add sysctl_tcp_rto_min_us
Adding a sysctl knob to allow user to specify a default
rto_min at socket init time, other than using the hard
coded 200ms default rto_min.
Note that the rto_min route option has the highest precedence
for configuring this setting, followed by the TCP_BPF_RTO_MIN
socket option, followed by the tcp_rto_min_us sysctl.
Signed-off-by: Kevin Yang <yyd@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index bd50df6a5a42..6e99eccdb837 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -1196,6 +1196,19 @@ tcp_pingpong_thresh - INTEGER Default: 1 +tcp_rto_min_us - INTEGER + Minimal TCP retransmission timeout (in microseconds). Note that the + rto_min route option has the highest precedence for configuring this + setting, followed by the TCP_BPF_RTO_MIN socket option, followed by + this tcp_rto_min_us sysctl. + + The recommended practice is to use a value less or equal to 200000 + microseconds. + + Possible Values: 1 - INT_MAX + + Default: 200000 + UDP variables ============= |