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.
patrick
Signed-off-by: Patrick Caulfield <[EMAIL PROTECTED]>
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -408,11 +408,14 @@ int dn_neigh_router_hello(struct sk_buff
}
}
- 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)));
+ /* 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);
