Date: Thu, 7 May 2020 03:29:19 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r360768 - stable/11/sys/netinet Message-ID: <202005070329.0473TJ8Z033787@repo.freebsd.org>
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Author: tuexen Date: Thu May 7 03:29:18 2020 New Revision: 360768 URL: https://svnweb.freebsd.org/changeset/base/360768 Log: MFC r358621: When using automatically generated flow labels and using TCP SYN cookies, use the same flow label for the segments sent during the handshake and after the handshake. This fixes a bug by making sure that sc_flowlabel is always stored in network byte order. Reviewed by: bz Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D23957 Modified: stable/11/sys/netinet/tcp_syncache.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/tcp_syncache.c ============================================================================== --- stable/11/sys/netinet/tcp_syncache.c Thu May 7 03:27:10 2020 (r360767) +++ stable/11/sys/netinet/tcp_syncache.c Thu May 7 03:29:18 2020 (r360768) @@ -2110,7 +2110,8 @@ syncookie_lookup(struct in_conninfo *inc, struct synca #ifdef INET6 case INC_ISIPV6: if (sotoinpcb(lso)->inp_flags & IN6P_AUTOFLOWLABEL) - sc->sc_flowlabel = sc->sc_iss & IPV6_FLOWLABEL_MASK; + sc->sc_flowlabel = + htonl(sc->sc_iss) & IPV6_FLOWLABEL_MASK; break; #endif }
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