tcp: use callout(9) directly instead of pr_slowtimo
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Authored by glebius on Aug 12 2022, 8:14 AM.

Details

Reviewers

tuexen
melifaro

Group Reviewers

network
transport

Commits

rG6c452841ef9b: tcp: use callout(9) directly instead of pr_slowtimo

Summary

Modern TCP stacks uses multiple callouts per tcpcb, and a global
callout is ancient artifact. However it is still used to garbage
collect compressed timewait entries.

Diff Detail

Repository

rG FreeBSD src repository

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Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

glebius created this revision.Aug 12 2022, 8:14 AM

Herald added a reviewer: transport. · View Herald TranscriptAug 12 2022, 8:14 AM

Herald added subscribers: melifaro, bz, ae, imp. · View Herald Transcript

glebius requested review of this revision.Aug 12 2022, 8:14 AM

Harbormaster completed remote builds in B46883: Diff 109225.Aug 12 2022, 8:14 AM

glebius added a parent revision: D36158: protosw: just use NULL pointer instead of struct nousrreqs.Aug 12 2022, 8:14 AM

glebius added a child revision: D36160: igmp: use callout(9) directly instead of pr_slowtimo, pr_fasttimo.

tuexen accepted this revision as: transport, tuexen.Aug 12 2022, 10:06 AM

This revision is now accepted and ready to land.Aug 12 2022, 10:06 AM

melifaro accepted this revision.Aug 12 2022, 11:04 AM

melifaro added inline comments.Aug 12 2022, 11:16 AM

sys/netinet/tcp_subr.c
1573 ↗	(On Diff #109225)	Maybe schedule it immediately to avoid duplicating the timeout? Or define it explicitly in `tcp_var.h` ?
sys/netinet/tcp_timer.c
256