Author: tuexen Date: Thu Sep 10 12:49:16 2020 New Revision: 365567 URL: https://svnweb.freebsd.org/changeset/base/365567
Log: MFC 359422: Be a bit more precisly in the description of the sysctl variable net.inet.tcp.pmtud_blackhole_detection. Also remove three entries, which are not sysctl variables but statistic counters for TCP. Thanks to 0mp@ for suggesting an improvement. Modified: stable/12/share/man/man4/tcp.4 Directory Properties: stable/12/ (props changed) Modified: stable/12/share/man/man4/tcp.4 ============================================================================== --- stable/12/share/man/man4/tcp.4 Thu Sep 10 12:41:01 2020 (r365566) +++ stable/12/share/man/man4/tcp.4 Thu Sep 10 12:49:16 2020 (r365567) @@ -34,7 +34,7 @@ .\" From: @(#)tcp.4 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd December 1, 2019 +.Dd March 29, 2020 .Dt TCP 4 .Os .Sh NAME @@ -577,7 +577,12 @@ Turn on automatic path MTU blackhole detection. In case of retransmits OS will lower the MSS to check if it's MTU problem. If current MSS is greater than -configured value to try, it will be set to configured value, otherwise, +configured value to try +.Po Va net.inet.tcp.pmtud_blackhole_mss +and +.Va net.inet.tcp.v6pmtud_blackhole_mss +.Pc , +it will be set to this value, otherwise, MSS will be set to default values .Po Va net.inet.tcp.mssdflt and @@ -587,13 +592,6 @@ and MSS to try for IPv4 if PMTU blackhole detection is turned on. .It Va v6pmtud_blackhole_mss MSS to try for IPv6 if PMTU blackhole detection is turned on. -.It Va pmtud_blackhole_activated -Number of times configured values were used in an attempt to downshift. -.It Va pmtud_blackhole_activated_min_mss -Number of times default MSS was used in an attempt to downshift. -.It Va pmtud_blackhole_failed -Number of connections for which retransmits continued even after MSS -downshift. .It Va functions_available List of available TCP function blocks (TCP stacks). .It Va functions_default _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
