Author: tuexen Date: Wed Mar 4 16:41:25 2020 New Revision: 358621 URL: https://svnweb.freebsd.org/changeset/base/358621
Log: 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@ MFC after: 3 days Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D23957 Modified: head/sys/netinet/tcp_syncache.c Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Wed Mar 4 16:20:59 2020 (r358620) +++ head/sys/netinet/tcp_syncache.c Wed Mar 4 16:41:25 2020 (r358621) @@ -2224,7 +2224,8 @@ 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 } _______________________________________________ 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"
