Author: sephe Date: Tue May 10 04:59:04 2016 New Revision: 299315 URL: https://svnweb.freebsd.org/changeset/base/299315
Log: tcp/syncache: Add comment for syncache_respond Suggested by: hiren, hps Reviewed by: sbruno Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D6148 Modified: head/sys/netinet/tcp_syncache.c Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Tue May 10 04:55:57 2016 (r299314) +++ head/sys/netinet/tcp_syncache.c Tue May 10 04:59:04 2016 (r299315) @@ -1505,6 +1505,10 @@ tfo_done: return (rv); } +/* + * Send SYN|ACK to the peer. Either in response to the peer's SYN, + * i.e. m0 != NULL, or upon 3WHS ACK timeout, i.e. m0 == NULL. + */ static int syncache_respond(struct syncache *sc, struct syncache_head *sch, int locked, const struct mbuf *m0) @@ -1688,6 +1692,11 @@ syncache_respond(struct syncache *sc, st M_SETFIB(m, sc->sc_inc.inc_fibnum); m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum); + /* + * If we have peer's SYN and it has a flowid, then let's assign it to + * our SYN|ACK. ip6_output() and ip_output() will not assign flowid + * to SYN|ACK due to lack of inp here. + */ if (m0 != NULL && M_HASHTYPE_GET(m0) != M_HASHTYPE_NONE) { m->m_pkthdr.flowid = m0->m_pkthdr.flowid; M_HASHTYPE_SET(m, M_HASHTYPE_GET(m0)); _______________________________________________ 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"
