Stop processing UPDATES if the peer is not up.

When the RDE issues an UPDATE NOTIFICATION because of some fatal error
like max-prefix count reached the peer is put into state PEER_ERR by
rde_update_err() and all UDPDATEs that are still queued should be dropped.
Noticed and OK deraadt@, OK job@

diff --git a/usr.sbin/bgpd/rde.c b/usr.sbin/bgpd/rde.c
index 9cbeb7c..11d7d57 100644 (file)
--- a/usr.sbin/bgpd/rde.c
+++ b/usr.sbin/bgpd/rde.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rde.c,v 1.523 2021/05/27 14:32:08 claudio Exp $ */
+/*     $OpenBSD: rde.c,v 1.524 2021/05/27 16:32:13 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -1077,6 +1077,8 @@ rde_dispatch_imsg_peer(struct rde_peer *peer, void *bula)
 
        switch (imsg.hdr.type) {
        case IMSG_UPDATE:
+               if (peer->state != PEER_UP)
+                       break;
                rde_update_dispatch(peer, &imsg);
                break;
        case IMSG_SESSION_UP: