CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2026/11/10 15:49:36
Modified files:
sys/netinet : Tag: OPENBSD_7_9 tcp_output.c
Log message:
Do not advance snd_nxt and snd_max for TCP SACK retransmits.
In the SACK case, the calculation that decided whether we should
adjust snd_nxt and snd_max was wrong. Use the same logic as FreeBSD
and NetBSD, and never advance them when retransmitting a SACK hole.
This may delay a FIN packet in a corner case, but the logic gets
much simpler. Also simplify the SACK checks, sack_rxmit is only
set if tp->sack_enable is true.
reported by OpenAI
from bluhm@; OK sashan@
this is errata/7.9/051_tcpsack.patch.sig
