Author: rrs Date: Wed Feb 12 13:04:19 2020 New Revision: 357816 URL: https://svnweb.freebsd.org/changeset/base/357816
Log: This small fix makes it so we properly follow the RFC and only enable ECN when both the CWR and ECT bits our set within the SYN packet. Sponsored by: Netflix Inc. Differential Revision: https://reviews.freebsd.org/D23645 Modified: head/sys/netinet/tcp_syncache.c Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Wed Feb 12 12:40:06 2020 (r357815) +++ head/sys/netinet/tcp_syncache.c Wed Feb 12 13:04:19 2020 (r357816) @@ -1668,7 +1668,8 @@ skip_alloc: sc->sc_peer_mss = to->to_mss; /* peer mss may be zero */ if (ltflags & TF_NOOPT) sc->sc_flags |= SCF_NOOPT; - if ((th->th_flags & (TH_ECE|TH_CWR)) && V_tcp_do_ecn) + if (((th->th_flags & (TH_ECE|TH_CWR)) == (TH_ECE|TH_CWR)) && + V_tcp_do_ecn) sc->sc_flags |= SCF_ECN; if (V_tcp_syncookies) _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
