diff options
Diffstat (limited to 'sys/netinet/ip_output.c')
| -rw-r--r-- | sys/netinet/ip_output.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c index a5429eacfa8..cbec4e7f983 100644 --- a/sys/netinet/ip_output.c +++ b/sys/netinet/ip_output.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_output.c,v 1.263 2014/04/21 12:22:26 henning Exp $ */ +/* $OpenBSD: ip_output.c,v 1.264 2014/07/11 15:25:44 henning Exp $ */ /* $NetBSD: ip_output.c,v 1.28 1996/02/13 23:43:07 christos Exp $ */ /* @@ -2075,18 +2075,23 @@ void in_proto_cksum_out(struct mbuf *m, struct ifnet *ifp) { /* some hw and in_delayed_cksum need the pseudo header cksum */ - if (m->m_pkthdr.csum_flags & (M_TCP_CSUM_OUT|M_UDP_CSUM_OUT)) { + if (m->m_pkthdr.csum_flags & + (M_TCP_CSUM_OUT|M_UDP_CSUM_OUT|M_ICMP_CSUM_OUT)) { struct ip *ip; - u_int16_t csum, offset; + u_int16_t csum = 0, offset; ip = mtod(m, struct ip *); offset = ip->ip_hl << 2; - csum = in_cksum_phdr(ip->ip_src.s_addr, ip->ip_dst.s_addr, - htonl(ntohs(ip->ip_len) - offset + ip->ip_p)); + if (m->m_pkthdr.csum_flags & (M_TCP_CSUM_OUT|M_UDP_CSUM_OUT)) + csum = in_cksum_phdr(ip->ip_src.s_addr, + ip->ip_dst.s_addr, htonl(ntohs(ip->ip_len) - + offset + ip->ip_p)); if (ip->ip_p == IPPROTO_TCP) offset += offsetof(struct tcphdr, th_sum); else if (ip->ip_p == IPPROTO_UDP) offset += offsetof(struct udphdr, uh_sum); + else if (ip->ip_p == IPPROTO_ICMP) + offset += offsetof(struct icmp, icmp_cksum); if ((offset + sizeof(u_int16_t)) > m->m_len) m_copyback(m, offset, sizeof(csum), &csum, M_NOWAIT); else |