tcp: improve compilation of cc and their helper modules
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Authored by tuexen on Sep 15 2025, 10:31 AM.

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Reviewers

rrs
timo.voelker_fh-muenster.de
rscheff
cc
peter.lei_ieee.org
lstewart

Commits

rGbf2391ee2ef2: tcp: improve compilation of cc and their helper modules
rG65a9bef46996: tcp: improve compilation of cc and their helper modules
rG1bb72d3d6eee: tcp: improve compilation of cc and their helper modules

Summary

Allow the congestion control modules CDG, CHD, HD, and vegas also to be compiled into the kernel for IPv6 only kernel configs
Compile the helper module h_ertt for round trip time estimation only into the kernel, if one of the congestion control module using it (one of CDG, CDH, HD, or vegas) is also compiled into the kernel.

Please note the second point implies that TCP TSO is done whenever possible as long as none of the congestion control modules CDG, CHD, HD, or vegas is loaded or compiled into the kernel.

Diff Detail

Repository

rG FreeBSD src repository

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Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

tuexen created this revision.Sep 15 2025, 10:31 AM

Herald added a subscriber: imp. · View Herald TranscriptSep 15 2025, 10:31 AM

tuexen requested review of this revision.Sep 15 2025, 10:31 AM

cc accepted this revision.Sep 15 2025, 10:49 PM

This revision is now accepted and ready to land.Sep 15 2025, 10:49 PM

The suggested changes in the summary make sense to me and the changes in sys/conf/files seem to correctly correspond to them. Looks all good to me. However, I haven't touched this file and don't know enough to review it.

Closed by commit rG1bb72d3d6eee: tcp: improve compilation of cc and their helper modules (authored by tuexen). · Explain WhySep 16 2025, 9:35 PM

This revision was automatically updated to reflect the committed changes.

tuexen added a commit: rG1bb72d3d6eee: tcp: improve compilation of cc and their helper modules.

tuexen added a commit: rG65a9bef46996: tcp: improve compilation of cc and their helper modules.Sep 22 2025, 7:23 PM

tuexen added a commit: rGbf2391ee2ef2: tcp: improve compilation of cc and their helper modules.Sep 22 2025, 7:31 PM