diff options
| author | Christian Weisgerber <naddy@cvs.openbsd.org> | 2009-06-03 18:22:45 +0000 |
|---|---|---|
| committer | Christian Weisgerber <naddy@cvs.openbsd.org> | 2009-06-03 18:22:45 +0000 |
| commit | 4eae039596e1aea5bbdea0ea1dd8f760958a5e4c (patch) | |
| tree | d41b8a2bb2923e8c5b458bd58202dc21d0eb93e5 /sys/netinet | |
| parent | a81e6e68cc8ef18fbed6c9885d694cd0bf4dc259 (diff) | |
add the basic infrastructure to take advantage of TCP and UDP receive
checksum offload over IPv6; ok deraadt@
Diffstat (limited to 'sys/netinet')
| -rw-r--r-- | sys/netinet/tcp_input.c | 19 | ||||
| -rw-r--r-- | sys/netinet/udp_usrreq.c | 20 |
2 files changed, 31 insertions, 8 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index cd63922fe2b..aee2240007e 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_input.c,v 1.224 2008/11/02 10:37:29 claudio Exp $ */ +/* $OpenBSD: tcp_input.c,v 1.225 2009/06/03 18:22:44 naddy Exp $ */ /* $NetBSD: tcp_input.c,v 1.23 1996/02/13 23:43:44 christos Exp $ */ /* @@ -522,9 +522,20 @@ tcp_input(struct mbuf *m, ...) /* * Checksum extended TCP header and data. */ - if (in6_cksum(m, IPPROTO_TCP, sizeof(struct ip6_hdr), tlen)) { - tcpstat.tcps_rcvbadsum++; - goto drop; + if ((m->m_pkthdr.csum_flags & M_TCP_CSUM_IN_OK) == 0) { + if (m->m_pkthdr.csum_flags & M_TCP_CSUM_IN_BAD) { + tcpstat.tcps_inhwcsum++; + tcpstat.tcps_rcvbadsum++; + goto drop; + } + if (in6_cksum(m, IPPROTO_TCP, sizeof(struct ip6_hdr), + tlen)) { + tcpstat.tcps_rcvbadsum++; + goto drop; + } + } else { + m->m_pkthdr.csum_flags &= ~M_TCP_CSUM_IN_OK; + tcpstat.tcps_inhwcsum++; } break; #endif diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c index 59374375801..d93dcd1b26a 100644 --- a/sys/netinet/udp_usrreq.c +++ b/sys/netinet/udp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: udp_usrreq.c,v 1.127 2009/06/02 15:32:19 blambert Exp $ */ +/* $OpenBSD: udp_usrreq.c,v 1.128 2009/06/03 18:22:44 naddy Exp $ */ /* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */ /* @@ -286,9 +286,21 @@ udp_input(struct mbuf *m, ...) udpstat.udps_nosum++; goto bad; } - if ((uh->uh_sum = in6_cksum(m, IPPROTO_UDP, iphlen, len))) { - udpstat.udps_badsum++; - goto bad; + if ((m->m_pkthdr.csum_flags & M_UDP_CSUM_IN_OK) == 0) { + if (m->m_pkthdr.csum_flags & M_UDP_CSUM_IN_BAD) { + udpstat.udps_badsum++; + udpstat.udps_inhwcsum++; + goto bad; + } + + if ((uh->uh_sum = in6_cksum(m, IPPROTO_UDP, + iphlen, len))) { + udpstat.udps_badsum++; + goto bad; + } + } else { + m->m_pkthdr.csum_flags &= ~M_UDP_CSUM_IN_OK; + udpstat.udps_inhwcsum++; } } else #endif /* INET6 */ |