Differential D48236

tcp: properly reset sackhint values when SACK recovery is done
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Authored by glebius on Dec 29 2024, 12:26 AM.

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	F171440643: D48236.id148501.diff
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	F171422064: D48236.diff
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rGb84f41b4e82d: tcp: properly reset sackhint values when SACK recovery is done

Summary

When the SACK scoreboard collapses, properly clear all the counters.
The counters are used in tcp_compute_pipe(), which can be called
anytime later after the SACK recovery. The returned result can be
totally bogus, including both too large and too small values.

PR: 283649

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rG FreeBSD src repository

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Event Timeline

glebius created this revision.Dec 29 2024, 12:26 AM

Herald added 1 blocking reviewer(s): transport. · View Herald TranscriptDec 29 2024, 12:26 AM

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

glebius requested review of this revision.Dec 29 2024, 12:26 AM

Harbormaster completed remote builds in B61376: Diff 148501.Dec 29 2024, 12:26 AM

glebius added a parent revision: D48235: tcp: make sack_rxmit in tcp_output() a bool.Dec 29 2024, 12:26 AM

glebius added a child revision: D48237: tcp: don't send beyond receivers advertised window.

emaste added a subscriber: emaste.Jan 13 2025, 1:04 AM

rscheff accepted this revision.Jan 13 2025, 10:20 AM

This revision is now accepted and ready to land.Jan 13 2025, 10:20 AM

Closed by commit rGb84f41b4e82d: tcp: properly reset sackhint values when SACK recovery is done (authored by glebius). · Explain WhyJan 13 2025, 6:15 PM

This revision was automatically updated to reflect the committed changes.

glebius added a commit: rGb84f41b4e82d: tcp: properly reset sackhint values when SACK recovery is done.

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sys/

netinet/

27 lines

Diff 149198

sys/netinet/tcp_sack.c

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