The branch main has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=2fb53436cd05f65164d166ef3ab33660fe451470
commit 2fb53436cd05f65164d166ef3ab33660fe451470 Author: Michael Tuexen <[email protected]> AuthorDate: 2026-09-04 07:24:40 +0000 Commit: Michael Tuexen <[email protected]> CommitDate: 2026-09-04 07:28:35 +0000 tcp md5: fix accounting of ACK with bad signatures When processing the ACK of the initial TCP handshake using the SYN cookie, don't increment the counter for unexpected signatures (tcps_sig_err_sigopt). The correct counter (tcps_sig_rcvbadsig) for bad signatures is already incremented in TCPMD5_INPUT(). Reported by: Hannes Elfert Reviewed by: rscheff MFC after: 1 week MFC to: stable/14 MFC to: stable/15 Differential Revision: https://reviews.freebsd.org/D59302 --- sys/netinet/tcp_syncache.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c index 1b7e03e4ff79..3a447703b628 100644 --- a/sys/netinet/tcp_syncache.c +++ b/sys/netinet/tcp_syncache.c @@ -1169,7 +1169,6 @@ syncache_expand(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th, s, __func__); free(s, M_TCPLOG); } - TCPSTAT_INC(tcps_sig_err_sigopt); return (-1); /* Do not send RST */ } #endif /* TCP_SIGNATURE */
