From 5062430c5cc526655e3d10c670fc9c263656f66c Mon Sep 17 00:00:00 2001 From: Patrick Caulfield Date: Tue, 3 Jan 2006 14:24:02 -0800 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- net/decnet/dn_neigh.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c index 8d0cc3cf3e4..33ab256cfd4 100644 --- a/net/decnet/dn_neigh.c +++ b/net/decnet/dn_neigh.c @@ -408,11 +408,14 @@ int dn_neigh_router_hello(struct sk_buff *skb) } } - 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); -- 2.20.1