diff options
Diffstat (limited to 'proto/ospf/packet.c')
| -rw-r--r-- | proto/ospf/packet.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c index 443efa0..eba4bc2 100644 --- a/proto/ospf/packet.c +++ b/proto/ospf/packet.c @@ -1,7 +1,7 @@ /* * BIRD -- OSPF * - * (c) 1999--2004 Ondrej Filip <feela@network.cz> + * (c) 1999--2005 Ondrej Filip <feela@network.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ @@ -31,8 +31,11 @@ ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type) unsigned ospf_pkt_maxsize(struct ospf_iface *ifa) { - return ifa->iface->mtu - SIZE_OF_IP_HEADER - - ((ifa->autype == OSPF_AUTH_CRYPT) ? OSPF_AUTH_CRYPT_SIZE : 0); + unsigned mtu = (ifa->type == OSPF_IT_VLINK) ? OSPF_VLINK_MTU : ifa->iface->mtu; + /* Can be mtu < 576? */ + return ((mtu <= ifa->iface->mtu) ? mtu : ifa->iface->mtu) - + SIZE_OF_IP_HEADER - ((ifa->autype == OSPF_AUTH_CRYPT) ? OSPF_AUTH_CRYPT_SIZE : 0); + /* For virtual links use mtu=576 */ } void |