Andrey V. Elsukov aaef76e1fd Handle delayed checksums if needed in NAT64. ... Upper level protocols defer checksums calculation in hope we have checksums offloading in a network card. CSUM_DELAY_DATA flag is used to determine that checksum calculation was deferred. And IP output routine checks for this flag before pass mbuf to lower layer. Forwarded packets have not this flag. NAT64 uses checksums adjustment when it translates IP headers. In most cases NAT64 is used for forwarded packets, but in case when it handles locally originated packets we need to finish checksum calculation that was deferred to correctly adjust it. Add check for presence of CSUM_DELAY_DATA flag and finish checksum calculation before adjustment. Reported and tested by: Evgeniy Khramtsov <evgeniy at khramtsov org> MFC after: 1 week		2020-08-05 09:16:35 +00:00
..
ipfw	Handle delayed checksums if needed in NAT64.	2020-08-05 09:16:35 +00:00
pf	Add the SCTP_SUPPORT kernel option.	2020-06-18 19:32:34 +00:00