Author: sephe Date: Fri Apr 29 07:23:08 2016 New Revision: 298769 URL: https://svnweb.freebsd.org/changeset/base/298769
Log: tcp/syncache: Set flowid and hash type properly for SYN|ACK So the underlying drivers can use it to select the sending queue properly for SYN|ACK instead of rolling their own hash. Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D6120 Modified: head/sys/netinet/tcp_syncache.c Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Fri Apr 29 05:28:40 2016 (r298768) +++ head/sys/netinet/tcp_syncache.c Fri Apr 29 07:23:08 2016 (r298769) @@ -127,7 +127,8 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, sync static void syncache_drop(struct syncache *, struct syncache_head *); static void syncache_free(struct syncache *); static void syncache_insert(struct syncache *, struct syncache_head *); -static int syncache_respond(struct syncache *, struct syncache_head *, int); +static int syncache_respond(struct syncache *, struct syncache_head *, int, + const struct mbuf *); static struct socket *syncache_socket(struct syncache *, struct socket *, struct mbuf *m); static void syncache_timeout(struct syncache *sc, struct syncache_head *sch, @@ -457,7 +458,7 @@ syncache_timer(void *xsch) free(s, M_TCPLOG); } - syncache_respond(sc, sch, 1); + syncache_respond(sc, sch, 1, NULL); TCPSTAT_INC(tcps_sc_retransmitted); syncache_timeout(sc, sch, 0); } @@ -1307,7 +1308,7 @@ syncache_add(struct in_conninfo *inc, st s, __func__); free(s, M_TCPLOG); } - if (syncache_respond(sc, sch, 1) == 0) { + if (syncache_respond(sc, sch, 1, m) == 0) { sc->sc_rxmits = 0; syncache_timeout(sc, sch, 1); TCPSTAT_INC(tcps_sndacks); @@ -1474,7 +1475,7 @@ skip_alloc: /* * Do a standard 3-way handshake. */ - if (syncache_respond(sc, sch, 0) == 0) { + if (syncache_respond(sc, sch, 0, m) == 0) { if (V_tcp_syncookies && V_tcp_syncookiesonly && sc != &scs) syncache_free(sc); else if (sc != &scs) @@ -1505,7 +1506,8 @@ tfo_done: } static int -syncache_respond(struct syncache *sc, struct syncache_head *sch, int locked) +syncache_respond(struct syncache *sc, struct syncache_head *sch, int locked, + const struct mbuf *m0) { struct ip *ip = NULL; struct mbuf *m; @@ -1686,6 +1688,10 @@ 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 (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)); + } #ifdef INET6 if (sc->sc_inc.inc_flags & INC_ISIPV6) { m->m_pkthdr.csum_flags = CSUM_TCP_IPV6; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
