Index: netinet/tcp_subr.c
===================================================================
RCS file: /cvs/src/sys/netinet/tcp_subr.c,v
retrieving revision 1.125
diff -u -p -r1.125 tcp_subr.c
--- netinet/tcp_subr.c 24 Oct 2013 11:31:43 -0000 1.125
+++ netinet/tcp_subr.c 24 Jan 2014 06:31:21 -0000
@@ -385,6 +385,7 @@ tcp_respond(struct tcpcb *tp, caddr_t te
m->m_len = tlen;
m->m_pkthdr.len = tlen;
m->m_pkthdr.rcvif = (struct ifnet *) 0;
+ m->m_pkthdr.csum_flags |= M_TCP_CSUM_OUT;
th->th_seq = htonl(seq);
th->th_ack = htonl(ack);
th->th_x2 = 0;
@@ -410,9 +411,6 @@ tcp_respond(struct tcpcb *tp, caddr_t te
ip6->ip6_nxt = IPPROTO_TCP;
ip6->ip6_hlim = in6_selecthlim(tp ? tp->t_inpcb : NULL, NULL);
/*XXX*/
ip6->ip6_plen = tlen - sizeof(struct ip6_hdr);
- th->th_sum = 0;
- th->th_sum = in6_cksum(m, IPPROTO_TCP,
- sizeof(struct ip6_hdr), ip6->ip6_plen);
HTONS(ip6->ip6_plen);
ip6_output(m, tp ? tp->t_inpcb->inp_outputopts6 : NULL,
(struct route_in6 *)ro, 0, NULL, NULL,
@@ -420,19 +418,9 @@ tcp_respond(struct tcpcb *tp, caddr_t te
break;
#endif /* INET6 */
case AF_INET:
- ih = (struct ipovly *)ip;
- bzero(ih->ih_x1, sizeof ih->ih_x1);
- ih->ih_len = htons((u_short)tlen - sizeof(struct ip));
-
- /*
- * There's no point deferring to hardware checksum processing
- * here, as we only send a minimal TCP packet whose checksum
- * we need to compute in any case.
- */
- th->th_sum = 0;
- th->th_sum = in_cksum(m, tlen);
ip->ip_len = htons(tlen);
ip->ip_ttl = ip_defttl;
+ ip->ip_tos = 0;
ip_output(m, (void *)NULL, ro, ip_mtudisc ? IP_MTUDISC : 0,
(void *)NULL, tp ? tp->t_inpcb : (void *)NULL);
}
--
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