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Differential D39234

tcp: update error counter when dropping a packet due to bad source
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Authored by glebius on Mar 23 2023, 9:54 PM.
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Subscribers
imp
melifaro
tuexen
zlei

Details

Reviewers
rrs
gallatin
markj
Group Reviewers
network
transport
Commits
rG78e6c3aacc7f: tcp: update error counter when dropping a packet due to bad source
Summary

Use the same counter that ip_input()/ip6_input() use for bad destination
address. For IPv6 this is already heavily abused ip6s_badscope, which
needs to be split into several separate error counters.

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 50549
Build 47440: arc lint + arc unit

Event Timeline

glebius created this revision.Mar 23 2023, 9:54 PM
Herald added a reviewer: transport. · View Herald TranscriptMar 23 2023, 9:54 PM
Herald added subscribers: melifaro, imp. · View Herald Transcript
glebius requested review of this revision.Mar 23 2023, 9:54 PM
glebius added a child revision: D39235: LRO: improve IPv4/IPv6 packet header checks.
Harbormaster completed remote builds in B50549: Diff 119358.Mar 23 2023, 9:54 PM
tuexen added a subscriber: tuexen.Mar 24 2023, 8:58 AM
tuexen added inline comments.
sys/netinet/tcp_input.c
678

Why do you keep the /* XXX */ in one case, but not in the other. I suggest to be consistent.

markj accepted this revision as: markj.Mar 24 2023, 4:50 PM
markj added inline comments.
sys/netinet/tcp_input.c
678

For v4, badaddr seems like a reasonable counter. Here, the use of badscope is overloaded, I believe the XXX comment indicates that this is not the right counter. However, it's better than not counting at all.

zlei added a subscriber: zlei.Mar 24 2023, 4:50 PM
glebius added inline comments.Mar 25 2023, 12:55 AM
sys/netinet/tcp_input.c
678

Yes, exactly what Mark said. :)

This revision was not accepted when it landed; it landed in state Needs Review.Mar 28 2023, 1:38 AM
Closed by commit rG78e6c3aacc7f: tcp: update error counter when dropping a packet due to bad source (authored by glebius). · Explain Why
This revision was automatically updated to reflect the committed changes.
glebius added a commit: rG78e6c3aacc7f: tcp: update error counter when dropping a packet due to bad source.

Revision Contents
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PathSize
sys/
netinet/
4 lines

Diff 119358

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sys/netinet/tcp_input.c

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