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| author | fjoe <fjoe@FreeBSD.org> | 2012-09-27 18:15:01 +0000 |
|---|---|---|
| committer | fjoe <fjoe@FreeBSD.org> | 2012-09-27 18:15:01 +0000 |
| commit | 8f394b36947fe1d8e82fef172f40b2901063475d (patch) | |
| tree | fe396017ec49f41a945f578dd9701050c79105a6 | |
| parent | e4c096aeb4d0889884334130ea1e8ab58ca88a8d (diff) | |
| download | FreeBSD-src-8f394b36947fe1d8e82fef172f40b2901063475d.zip FreeBSD-src-8f394b36947fe1d8e82fef172f40b2901063475d.tar.gz | |
Fix pseudo checksum calculation.
This fixes ipfilter w/ network controllers that implement only
partial rx csum offloading.
PR: 106438
Obtained from: upstream
MFC after: 1 week
| -rw-r--r-- | sys/contrib/ipfilter/netinet/ip_fil_freebsd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c index cac56ef..338b69a 100644 --- a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c +++ b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c @@ -1357,7 +1357,9 @@ fr_info_t *fin; else sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr, htonl(m->m_pkthdr.csum_data + - fin->fin_ip->ip_len + fin->fin_p)); + fin->fin_ip->ip_len - + (fin->fin_ip->ip_hl << 2) + + fin->fin_p)); sum ^= 0xffff; if (sum != 0) { fin->fin_flx |= FI_BAD; |
