009cae09a1
git-svn-id: svn://svn.openwrt.org/openwrt/packages@10666 3c298f89-4303-0410-b956-a3cf2f4a3e73
94 lines
3.0 KiB
Diff
94 lines
3.0 KiB
Diff
diff -Nur quagga-0.98.6/bgpd/bgp_aspath.c quagga-0.98.6-patched/bgpd/bgp_aspath.c
|
|
--- quagga-0.98.6/bgpd/bgp_aspath.c 2005-06-15 14:53:50.000000000 +0300
|
|
+++ quagga-0.98.6-patched/bgpd/bgp_aspath.c 2007-11-24 03:20:02.000000000 +0200
|
|
@@ -614,6 +614,47 @@
|
|
return 1;
|
|
}
|
|
|
|
+/* AS path confed check. If aspath contains confed set or sequence then return 1. */
|
|
+int
|
|
+aspath_confed_check (struct aspath *aspath)
|
|
+{
|
|
+ caddr_t pnt;
|
|
+ caddr_t end;
|
|
+ struct assegment *assegment;
|
|
+
|
|
+ if (aspath == NULL)
|
|
+ return 0;
|
|
+
|
|
+ pnt = aspath->data;
|
|
+ end = aspath->data + aspath->length;
|
|
+
|
|
+ while (pnt < end)
|
|
+ {
|
|
+ assegment = (struct assegment *) pnt;
|
|
+ if (assegment->type == AS_CONFED_SET || assegment->type == AS_CONFED_SEQUENCE)
|
|
+ return 1;
|
|
+ pnt += (assegment->length * AS_VALUE_SIZE) + AS_HEADER_SIZE;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/* Leftmost AS path segment confed check. If leftmost AS segment is of type
|
|
+ AS_CONFED_SEQUENCE or AS_CONFED_SET then return 1. */
|
|
+int
|
|
+aspath_left_confed_check (struct aspath *aspath)
|
|
+{
|
|
+ struct assegment *assegment;
|
|
+
|
|
+ if (aspath == NULL)
|
|
+ return 0;
|
|
+
|
|
+ assegment = (struct assegment *) aspath->data;
|
|
+ if (assegment->type == AS_CONFED_SEQUENCE || assegment->type == AS_CONFED_SET)
|
|
+ return 1;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
/* Merge as1 to as2. as2 should be uninterned aspath. */
|
|
struct aspath *
|
|
aspath_merge (struct aspath *as1, struct aspath *as2)
|
|
@@ -671,6 +712,10 @@
|
|
if (seg1 == NULL)
|
|
return as2;
|
|
|
|
+ /* Delete any AS_CONFED_SEQUENCE segment from as2. */
|
|
+ if (seg1->type == AS_SEQUENCE && seg2->type == AS_CONFED_SEQUENCE)
|
|
+ as2 = aspath_delete_confed_seq (as2);
|
|
+
|
|
/* Compare last segment type of as1 and first segment type of as2. */
|
|
if (seg1->type != seg2->type)
|
|
return aspath_merge (as1, as2);
|
|
diff -Nur quagga-0.98.6/bgpd/bgp_aspath.h quagga-0.98.6-patched/bgpd/bgp_aspath.h
|
|
--- quagga-0.98.6/bgpd/bgp_aspath.h 2005-06-15 14:53:50.000000000 +0300
|
|
+++ quagga-0.98.6-patched/bgpd/bgp_aspath.h 2007-11-24 03:21:24.000000000 +0200
|
|
@@ -76,4 +76,6 @@
|
|
int aspath_loop_check (struct aspath *, as_t);
|
|
int aspath_private_as_check (struct aspath *);
|
|
int aspath_firstas_check (struct aspath *, as_t);
|
|
+int aspath_confed_check (struct aspath *);
|
|
+int aspath_left_confed_check (struct aspath *);
|
|
unsigned long aspath_count ();
|
|
diff -Nur quagga-0.98.6/bgpd/bgp_attr.c quagga-0.98.6-patched/bgpd/bgp_attr.c
|
|
--- quagga-0.98.6/bgpd/bgp_attr.c 2006-05-03 01:37:47.000000000 +0300
|
|
+++ quagga-0.98.6-patched/bgpd/bgp_attr.c 2007-11-24 03:09:56.000000000 +0200
|
|
@@ -673,6 +673,17 @@
|
|
return -1;
|
|
}
|
|
|
|
+ /* Confederation sanity check. */
|
|
+ if ((peer_sort (peer) == BGP_PEER_CONFED && ! aspath_left_confed_check (attr->aspath)) ||
|
|
+ (peer_sort (peer) == BGP_PEER_EBGP && aspath_confed_check (attr->aspath)))
|
|
+ {
|
|
+ zlog (peer->log, LOG_ERR, "Malformed AS path from %s", peer->host);
|
|
+ bgp_notify_send (peer,
|
|
+ BGP_NOTIFY_UPDATE_ERR,
|
|
+ BGP_NOTIFY_UPDATE_MAL_AS_PATH);
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
bgp = peer->bgp;
|
|
|
|
/* First AS check for EBGP. */
|