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| author | Fan Du <fan.du@intel.com> | 2015-03-06 06:18:25 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-06 22:57:42 +0300 |
| commit | fab42760843734a82b6b2d1241ca44f375a686eb (patch) | |
| tree | edd39a71398f8639e3166dd64805399c5a8cec11 /Documentation/networking/ip-sysctl.txt | |
| parent | 05cbc0db03e82128f2e7e353d4194dd24a1627fe (diff) | |
| download | linux-fab42760843734a82b6b2d1241ca44f375a686eb.tar.xz | |
ipv4: Documenting two sysctls for tcp PMTU probe
Namely tcp_probe_interval to control how often to restart
a probe. And tcp_probe_threshold to control when stop the
probing in respect to the width of search range in bytes
Signed-off-by: Fan Du <fan.du@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 1b8c964b0d17..4412f695a62f 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -388,6 +388,16 @@ tcp_mtu_probing - INTEGER 1 - Disabled by default, enabled when an ICMP black hole detected 2 - Always enabled, use initial MSS of tcp_base_mss. +tcp_probe_interval - INTEGER + Controls how often to start TCP Packetization-Layer Path MTU + Discovery reprobe. The default is reprobing every 10 minutes as + per RFC4821. + +tcp_probe_threshold - INTEGER + Controls when TCP Packetization-Layer Path MTU Discovery probing + will stop in respect to the width of search range in bytes. Default + is 8 bytes. + tcp_no_metrics_save - BOOLEAN By default, TCP saves various connection metrics in the route cache when the connection closes, so that connections established in the |