diff options
| author | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-03-05 03:38:39 +0000 |
|---|---|---|
| committer | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-03-05 03:38:39 +0000 |
| commit | 35d1bea9909efe0d68b5369e8bf2ddb433b1c554 (patch) | |
| tree | dd5b60621c63c4f02d683ab44c4af39760fa7863 /sys/net/if_bridge.c | |
| parent | ed85b29b205624f339c58c7a206c00d21ff93a75 (diff) | |
Clear ip_sum before calculating IP checksum (closes PR 1667)
Diffstat (limited to 'sys/net/if_bridge.c')
| -rw-r--r-- | sys/net/if_bridge.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/net/if_bridge.c b/sys/net/if_bridge.c index 8b2eba659ad..32f64ae0a8b 100644 --- a/sys/net/if_bridge.c +++ b/sys/net/if_bridge.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_bridge.c,v 1.50 2001/02/06 06:48:08 mickey Exp $ */ +/* $OpenBSD: if_bridge.c,v 1.51 2001/03/05 03:38:38 angelos Exp $ */ /* * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net) @@ -1929,6 +1929,7 @@ bridge_filter(sc, ifp, eh, m) ip = mtod(m, struct ip *); } + ip->ip_sum = 0; if ((ip->ip_sum = in_cksum(m, hlen)) != 0) goto dropit; @@ -1961,6 +1962,7 @@ bridge_filter(sc, ifp, eh, m) HTONS(ip->ip_len); HTONS(ip->ip_id); HTONS(ip->ip_off); + ip->ip_sum = 0; ip->ip_sum = in_cksum(m, hlen); /* Reattach SNAP header */ |