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Differential D45304

tcp: improve blackhole support
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Authored by tuexen on May 22 2024, 7:56 PM.

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rrs
rscheff
gallatin
lstewart
peter.lei_ieee.org

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Commits

rGf0697703dd79: tcp: improve blackhole support
rG02d15215cef2: tcp: improve blackhole support

Summary

There are two improvements to the TCP blackhole support:

If net.inet.tcp.blackhole is set to 2, also sent no RST whenever a segment is received on an existing closed socket or if there is a port mismatch when using UDP encapsulation.
If net.inet.tcp.blackhole is set to 3, no RST segment is sent in response to incoming segments on closed sockets or in response to unexpected segments on listening sockets.

Thanks to gallatin@ for suggesting such an improvement.

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rG FreeBSD src repository

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Event Timeline

tuexen created this revision.May 22 2024, 7:56 PM

Herald added a reviewer: transport. · View Herald TranscriptMay 22 2024, 7:56 PM

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

tuexen requested review of this revision.May 22 2024, 7:56 PM

gallatin accepted this revision.May 24 2024, 5:40 AM

This revision was not accepted when it landed; it landed in state Needs Review.May 25 2024, 8:31 AM

Closed by commit rG02d15215cef2: tcp: improve blackhole support (authored by tuexen). · Explain Why

This revision was automatically updated to reflect the committed changes.

tuexen added a commit: rG02d15215cef2: tcp: improve blackhole support.

tuexen added a commit: rGf0697703dd79: tcp: improve blackhole support.Aug 3 2024, 10:34 PM

Revision Contents
Changeset List

Path

Size

share/

man/

man4/

10 lines

sys/

netinet/

43 lines

Diff 139078

share/man/man4/blackhole.4

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sys/netinet/tcp_input.c

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