diff options
| author | jesper <jesper@FreeBSD.org> | 2002-01-11 16:04:47 +0000 |
|---|---|---|
| committer | jesper <jesper@FreeBSD.org> | 2002-01-11 16:04:47 +0000 |
| commit | 927db04f533d2fdbd84db7aa769260149c96f1a4 (patch) | |
| tree | 04dbc7f90561d9bd3e965da432f5324effc66cf3 /sys/net/if_ethersubr.c | |
| parent | db24453e8e14091a9f59f87285a92cc5d75012c6 (diff) | |
| download | FreeBSD-src-927db04f533d2fdbd84db7aa769260149c96f1a4.zip FreeBSD-src-927db04f533d2fdbd84db7aa769260149c96f1a4.tar.gz | |
It turns out that when a broadcast packet is looped back, the checksums
are checked on the way in even if they were not calculated on the
way out.
This fixes rwhod
PR: 31954
Submitted by: fenner
Approved by: fenner
MFC after: 1 week
Diffstat (limited to 'sys/net/if_ethersubr.c')
| -rw-r--r-- | sys/net/if_ethersubr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c index 399f065..d743187 100644 --- a/sys/net/if_ethersubr.c +++ b/sys/net/if_ethersubr.c @@ -325,12 +325,25 @@ ether_output(ifp, m, dst, rt0) * reasons and compatibility with the original behavior. */ if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { + int csum_flags = 0; + + if (m->m_pkthdr.csum_flags & CSUM_IP) + csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID); + if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) + csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR); if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); + n->m_pkthdr.csum_flags |= csum_flags; + if (csum_flags & CSUM_DATA_VALID) + n->m_pkthdr.csum_data = 0xffff; + (void) if_simloop(ifp, n, dst->sa_family, hlen); } else if (bcmp(eh->ether_dhost, eh->ether_shost, ETHER_ADDR_LEN) == 0) { + m->m_pkthdr.csum_flags |= csum_flags; + if (csum_flags & CSUM_DATA_VALID) + m->m_pkthdr.csum_data = 0xffff; (void) if_simloop(ifp, m, dst->sa_family, hlen); return (0); /* XXX */ } |
