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authorOndrej Filip <feela@network.cz>2005-03-14 12:24:56 +0100
committerOndrej Filip <feela@network.cz>2005-03-14 12:24:56 +0100
commite300066d5f66b8bd1d5561d63c10a8fbdce3ba8e (patch)
tree59a1850f334f13206bcc4d2e5ef57fff71a7d16f /proto/ospf
parent427e59939bc72c79f1566167b337927b14cb1715 (diff)
downloadbird-e300066d5f66b8bd1d5561d63c10a8fbdce3ba8e.tar
bird-e300066d5f66b8bd1d5561d63c10a8fbdce3ba8e.zip
OSPF can accept larger packets than MTU.
Diffstat (limited to 'proto/ospf')
-rw-r--r--proto/ospf/iface.c14
-rw-r--r--proto/ospf/ospf.h15
2 files changed, 21 insertions, 8 deletions
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index e4070fd..3306285 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.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.
*/
@@ -59,7 +59,7 @@ ospf_open_ip_socket(struct ospf_iface *ifa)
ipsk->tx_hook = ospf_tx_hook;
ipsk->err_hook = ospf_err_hook;
ipsk->iface = ifa->iface;
- ipsk->rbsize = ifa->iface->mtu;
+ ipsk->rbsize = OSPF_MAX_PKT_SIZE;
ipsk->tbsize = ifa->iface->mtu;
ipsk->data = (void *) ifa;
if (sk_open(ipsk) != 0)
@@ -126,7 +126,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
ifa->dr_sk->tx_hook = ospf_tx_hook;
ifa->dr_sk->err_hook = ospf_err_hook;
ifa->dr_sk->iface = ifa->iface;
- ifa->dr_sk->rbsize = ifa->iface->mtu;
+ ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
ifa->dr_sk->tbsize = ifa->iface->mtu;
ifa->dr_sk->data = (void *) ifa;
if (sk_open(ifa->dr_sk) != 0)
@@ -299,7 +299,7 @@ ospf_open_mc_socket(struct ospf_iface *ifa)
mcsk->tx_hook = ospf_tx_hook;
mcsk->err_hook = ospf_err_hook;
mcsk->iface = ifa->iface;
- mcsk->rbsize = ifa->iface->mtu;
+ mcsk->rbsize = OSPF_MAX_PKT_SIZE;
mcsk->tbsize = ifa->iface->mtu;
mcsk->data = (void *) ifa;
if (sk_open(mcsk) != 0)
@@ -523,19 +523,19 @@ ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface)
OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s.", iface->name);
if (ifa->hello_sk)
{
- ifa->hello_sk->rbsize = ifa->iface->mtu;
+ ifa->hello_sk->rbsize = OSPF_MAX_PKT_SIZE;
ifa->hello_sk->tbsize = ifa->iface->mtu;
sk_reallocate(ifa->hello_sk);
}
if (ifa->dr_sk)
{
- ifa->dr_sk->rbsize = ifa->iface->mtu;
+ ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
ifa->dr_sk->tbsize = ifa->iface->mtu;
sk_reallocate(ifa->dr_sk);
}
if (ifa->ip_sk)
{
- ifa->ip_sk->rbsize = ifa->iface->mtu;
+ ifa->ip_sk->rbsize = OSPF_MAX_PKT_SIZE;
ifa->ip_sk->tbsize = ifa->iface->mtu;
sk_reallocate(ifa->ip_sk);
}
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 79d1f4f..e52a6ef 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -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.
*/
@@ -10,6 +10,19 @@
#define _BIRD_OSPF_H_
#define MAXNETS 10
+#undef OSPF_BIG_PACKETS /*
+ * RFC 2328 says, maximum packet size is 65535
+ * This could be too much for small systems, so I
+ * normally allocate 2*mtu - (I found one cisco
+ * sending packets mtu+16)
+ */
+
+#ifdef OSPF_BIG_PACKETS
+#define OSPF_MAX_PKT_SIZE 65536
+#else
+#define OSPF_MAX_PKT_SIZE (ifa->iface->mtu * 2)
+#endif
+
#ifdef LOCAL_DEBUG
#define OSPF_FORCE_DEBUG 1
#else