Commit 5062430c authored Jan 03, 2006 by Patrick Caulfield Committed by David S. Miller Jan 03, 2006

[DECNET]: Only use local routers



The attached patch makes DECnet routing only use routers from the same
area - rather than the highest rated router seen.

In theory there should not be an out-of-area router on a local network
but some networks are bridged rather than properly routed. VMS seems
to behave similarly: if I bring up a VMS node with no router then it
can't see anything else on the global network.

Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 4b5bdf5c

net/decnet/dn_neigh.c

+8 −5

Original line number	Diff line number	Diff line
		@@ -408,12 +408,15 @@ int dn_neigh_router_hello(struct sk_buff *skb)
		}
		}

		/* Only use routers in our area */
		if ((dn_ntohs(src)>>10) == dn_ntohs((decnet_address)>>10)) {
		if (!dn_db->router) {
		dn_db->router = neigh_clone(neigh);
		} else {
		if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
		neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
		}
		}
		write_unlock(&neigh->lock);
		neigh_release(neigh);
		}

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