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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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May 25 2024, 4:54 PM
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glebius
imp
melifaro

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Reviewers
rrs
rscheff
gallatin
lstewart
peter.lei_ieee.org
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transport
Commits
rG02d15215cef2: tcp: improve blackhole support
Summary

There are two improvements to the TCP blackhole support:

  1. 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.
  2. 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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Repository
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.

Revision Contents
Changeset List

PathSize
share/
man/
man4/
10 lines
sys/
netinet/
43 lines

Diff 139078

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share/man/man4/blackhole.4

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sys/netinet/tcp_input.c

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