From c27b2449d1f57e780974ed13fbd572a48e2a3602 Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Mon, 8 Feb 2010 16:01:03 +0100
Subject: Shows source (Router ID) for OSPF routes and adds such attribute.

A sad thing is that we does not have a 'router_id' filter type,
so it must be given as decimal number in filters.
---
 proto/ospf/ospf.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

(limited to 'proto/ospf/ospf.c')

diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 232803d..d2ceab2 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -278,19 +278,20 @@ ospf_rte_same(struct rte *new, struct rte *old)
   return
     new->u.ospf.metric1 == old->u.ospf.metric1 &&
     new->u.ospf.metric2 == old->u.ospf.metric2 &&
-    new->u.ospf.tag == old->u.ospf.tag;
+    new->u.ospf.tag == old->u.ospf.tag &&
+    new->u.ospf.router_id == old->u.ospf.router_id;
 }
 
 static ea_list *
 ospf_build_attrs(ea_list * next, struct linpool *pool, u32 m1, u32 m2,
-		 u32 tag)
+		 u32 tag, u32 rid)
 {
   struct ea_list *l =
-    lp_alloc(pool, sizeof(struct ea_list) + 3 * sizeof(eattr));
+    lp_alloc(pool, sizeof(struct ea_list) + 4 * sizeof(eattr));
 
   l->next = next;
   l->flags = EALF_SORTED;
-  l->count = 3;
+  l->count = 4;
   l->attrs[0].id = EA_OSPF_METRIC1;
   l->attrs[0].flags = 0;
   l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
@@ -303,6 +304,10 @@ ospf_build_attrs(ea_list * next, struct linpool *pool, u32 m1, u32 m2,
   l->attrs[2].flags = 0;
   l->attrs[2].type = EAF_TYPE_INT | EAF_TEMP;
   l->attrs[2].u.data = tag;
+  l->attrs[3].id = EA_OSPF_ROUTER_ID;
+  l->attrs[3].flags = 0;
+  l->attrs[3].type = EAF_TYPE_INT | EAF_TEMP;
+  l->attrs[3].u.data = rid;
   return l;
 }
 
@@ -435,7 +440,7 @@ ospf_import_control(struct proto *p, rte ** new, ea_list ** attrs,
 
   if (p == e->attrs->proto)
     return -1;			/* Reject our own routes */
-  *attrs = ospf_build_attrs(*attrs, pool, LSINFINITY, 10000, 0);
+  *attrs = ospf_build_attrs(*attrs, pool, LSINFINITY, 10000, 0, 0);
   return 0;			/* Leave decision to the filters */
 }
 
@@ -443,7 +448,7 @@ struct ea_list *
 ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
 {
   return ospf_build_attrs(NULL, pool, rt->u.ospf.metric1, rt->u.ospf.metric2,
-			  rt->u.ospf.tag);
+			  rt->u.ospf.tag, rt->u.ospf.router_id);
 }
 
 void
@@ -452,6 +457,7 @@ ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs)
   rt->u.ospf.metric1 = ea_get_int(attrs, EA_OSPF_METRIC1, LSINFINITY);
   rt->u.ospf.metric2 = ea_get_int(attrs, EA_OSPF_METRIC2, 10000);
   rt->u.ospf.tag = ea_get_int(attrs, EA_OSPF_TAG, 0);
+  rt->u.ospf.router_id = ea_get_int(attrs, EA_OSPF_ROUTER_ID, 0);
 }
 
 /**
@@ -569,6 +575,8 @@ ospf_get_route_info(rte * rte, byte * buf, ea_list * attrs UNUSED)
   {
     buf += bsprintf(buf, " [%x]", rte->u.ospf.tag);
   }
+  if (rte->u.ospf.router_id)
+    buf += bsprintf(buf, " [%R]", rte->u.ospf.router_id);
 }
 
 static int
@@ -583,7 +591,10 @@ ospf_get_attr(eattr * a, byte * buf, int buflen UNUSED)
     bsprintf(buf, "metric2");
     return GA_NAME;
   case EA_OSPF_TAG:
-    bsprintf(buf, "tag: %08x", a->u.data);
+    bsprintf(buf, "tag: %08x (%u)", a->u.data, a->u.data);
+    return GA_FULL;
+ case EA_OSPF_ROUTER_ID:
+   bsprintf(buf, "router_id: %R (%u)", a->u.data, a->u.data);
     return GA_FULL;
   default:
     return GA_UNKNOWN;
-- 
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