diff options
Diffstat (limited to 'sys/netinet/tcp_input.c')
| -rw-r--r-- | sys/netinet/tcp_input.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index c1375e9faaa..a11b872a3bc 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_input.c,v 1.170 2004/05/27 08:17:31 markus Exp $ */ +/* $OpenBSD: tcp_input.c,v 1.171 2004/05/31 11:02:11 markus Exp $ */ /* $NetBSD: tcp_input.c,v 1.23 1996/02/13 23:43:44 christos Exp $ */ /* @@ -375,7 +375,7 @@ tcp_input(struct mbuf *m, ...) struct inpcb *inp; u_int8_t *optp = NULL; int optlen = 0; - int len, tlen, off; + int tlen, off; struct tcpcb *tp = 0; int tiflags; struct socket *so = NULL; @@ -470,6 +470,7 @@ tcp_input(struct mbuf *m, ...) return; } + tlen = m->m_pkthdr.len - iphlen; ip = NULL; #ifdef INET6 ip6 = NULL; @@ -480,9 +481,6 @@ tcp_input(struct mbuf *m, ...) if (IN_MULTICAST(ip->ip_dst.s_addr) || in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) goto drop; - - tlen = m->m_pkthdr.len - iphlen; - #ifdef TCP_ECN /* save ip_tos before clearing it for checksum */ iptos = ip->ip_tos; @@ -496,8 +494,7 @@ tcp_input(struct mbuf *m, ...) tcpstat.tcps_rcvbadsum++; goto drop; } - len = m->m_pkthdr.len - iphlen; - if (in4_cksum(m, IPPROTO_TCP, iphlen, len) != 0) { + if (in4_cksum(m, IPPROTO_TCP, iphlen, tlen) != 0) { tcpstat.tcps_rcvbadsum++; goto drop; } @@ -509,7 +506,6 @@ tcp_input(struct mbuf *m, ...) #ifdef INET6 case AF_INET6: ip6 = mtod(m, struct ip6_hdr *); - tlen = m->m_pkthdr.len - iphlen; #ifdef TCP_ECN iptos = (ntohl(ip6->ip6_flow) >> 20) & 0xff; #endif |