Kristof Provost fc1c98645b MFC r289316: ... 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 Relnotes: yes Sponsored by: RootBSD		2015-10-21 15:32:21 +00:00
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ipfw	MFC r266310	2015-09-18 17:29:24 +00:00
pf	MFC r289316:	2015-10-21 15:32:21 +00:00