OSPF can accept larger packets than MTU.
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parent
427e59939b
commit
e300066d5f
2 changed files with 21 additions and 8 deletions
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@ -1,7 +1,7 @@
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/*
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* BIRD -- OSPF
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*
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* (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
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* (c) 1999--2005 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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@ -59,7 +59,7 @@ ospf_open_ip_socket(struct ospf_iface *ifa)
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ipsk->tx_hook = ospf_tx_hook;
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ipsk->err_hook = ospf_err_hook;
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ipsk->iface = ifa->iface;
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ipsk->rbsize = ifa->iface->mtu;
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ipsk->rbsize = OSPF_MAX_PKT_SIZE;
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ipsk->tbsize = ifa->iface->mtu;
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ipsk->data = (void *) ifa;
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if (sk_open(ipsk) != 0)
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@ -126,7 +126,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
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ifa->dr_sk->tx_hook = ospf_tx_hook;
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ifa->dr_sk->err_hook = ospf_err_hook;
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ifa->dr_sk->iface = ifa->iface;
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ifa->dr_sk->rbsize = ifa->iface->mtu;
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ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
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ifa->dr_sk->tbsize = ifa->iface->mtu;
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ifa->dr_sk->data = (void *) ifa;
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if (sk_open(ifa->dr_sk) != 0)
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@ -299,7 +299,7 @@ ospf_open_mc_socket(struct ospf_iface *ifa)
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mcsk->tx_hook = ospf_tx_hook;
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mcsk->err_hook = ospf_err_hook;
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mcsk->iface = ifa->iface;
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mcsk->rbsize = ifa->iface->mtu;
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mcsk->rbsize = OSPF_MAX_PKT_SIZE;
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mcsk->tbsize = ifa->iface->mtu;
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mcsk->data = (void *) ifa;
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if (sk_open(mcsk) != 0)
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@ -523,19 +523,19 @@ ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface)
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OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s.", iface->name);
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if (ifa->hello_sk)
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{
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ifa->hello_sk->rbsize = ifa->iface->mtu;
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ifa->hello_sk->rbsize = OSPF_MAX_PKT_SIZE;
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ifa->hello_sk->tbsize = ifa->iface->mtu;
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sk_reallocate(ifa->hello_sk);
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}
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if (ifa->dr_sk)
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{
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ifa->dr_sk->rbsize = ifa->iface->mtu;
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ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
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ifa->dr_sk->tbsize = ifa->iface->mtu;
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sk_reallocate(ifa->dr_sk);
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}
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if (ifa->ip_sk)
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{
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ifa->ip_sk->rbsize = ifa->iface->mtu;
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ifa->ip_sk->rbsize = OSPF_MAX_PKT_SIZE;
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ifa->ip_sk->tbsize = ifa->iface->mtu;
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sk_reallocate(ifa->ip_sk);
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}
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@ -1,7 +1,7 @@
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/*
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* BIRD -- OSPF
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*
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* (c) 1999--2004 Ondrej Filip <feela@network.cz>
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* (c) 1999--2005 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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@ -10,6 +10,19 @@
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#define _BIRD_OSPF_H_
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#define MAXNETS 10
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#undef OSPF_BIG_PACKETS /*
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* RFC 2328 says, maximum packet size is 65535
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* This could be too much for small systems, so I
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* normally allocate 2*mtu - (I found one cisco
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* sending packets mtu+16)
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*/
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#ifdef OSPF_BIG_PACKETS
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#define OSPF_MAX_PKT_SIZE 65536
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#else
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#define OSPF_MAX_PKT_SIZE (ifa->iface->mtu * 2)
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#endif
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#ifdef LOCAL_DEBUG
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#define OSPF_FORCE_DEBUG 1
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#else
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