https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193579
--- Comment #6 from commit-h...@freebsd.org --- A commit references this bug: Author: kp Date: Fri Dec 25 15:12:12 UTC 2015 New revision: 292731 URL: https://svnweb.freebsd.org/changeset/base/292731 Log: pf: Fix TSO issues In certain configurations (mostly but not exclusively as a VM on Xen) pf produced packets with an invalid TCP checksum. The problem was that pf could only handle packets with a full checksum. The FreeBSD IP stack produces TCP packets with a pseudo-header checksum (only addresses, length and protocol). Certain network interfaces expect to see the pseudo-header checksum, so they end up producing packets with invalid checksums. To fix this stop calculating the full checksum and teach pf to only update TCP checksums if TSO is disabled or the change affects the pseudo-header checksum. PR: 154428, 193579, 198868 Sponsored by: RootBSD Changes: stable/9/sys/contrib/pf/net/pf.c stable/9/sys/contrib/pf/net/pf_ioctl.c stable/9/sys/contrib/pf/net/pf_norm.c stable/9/sys/contrib/pf/net/pfvar.h -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
