Page MenuHomeFreeBSD

pf tests: Verify (tcp) checksum modification on unaligned options
AbandonedPublic

Authored by kp on Dec 20 2020, 3:02 PM.
Tags
None
Referenced Files
Unknown Object (File)
Fri, Feb 7, 1:55 PM
Unknown Object (File)
Tue, Feb 4, 6:06 PM
Unknown Object (File)
Tue, Feb 4, 2:35 PM
Unknown Object (File)
Thu, Jan 30, 1:37 AM
Unknown Object (File)
Sun, Jan 12, 4:54 AM
Unknown Object (File)
Dec 30 2024, 4:03 AM
Unknown Object (File)
Sep 19 2024, 8:16 PM
Unknown Object (File)
Sep 5 2024, 6:29 PM

Details

Summary

It turns out pf incorrectly updates the TCP checksum if the TCP option
we're modifying is not 2-byte algined with respect to the start of the
packet.

Create a TCP packet with such an option and throw it through a scrub
rule, which will update timestamps and modify the packet.

PR: 240416

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 35584
Build 32484: arc lint + arc unit