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-rw-r--r--proto/ospf/ospf.c29
-rw-r--r--proto/ospf/ospf.h2
2 files changed, 31 insertions, 0 deletions
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 710c414..e73e1ce 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -15,6 +15,7 @@ ospf_start(struct proto *p)
DBG("%s: Start\n",p->name);
p->if_notify=ospf_if_notify;
+ p->rte_better=ospf_rte_better;
fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib);
return PS_UP;
@@ -69,6 +70,34 @@ ospf_init(struct proto_config *c)
return p;
}
+/* If new is better return 1 */
+static int
+ospf_rte_better(struct rte *new, struct rte *old)
+{
+ struct proto *p = new->attrs->proto;
+
+ if(new->u.ospf.metric1=LSINFINITY) return 0;
+
+ if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA))
+ && (old->attrs->source==RTS_OSPF_EXT)) return 1;
+
+ if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA))
+ && (new->attrs->source==RTS_OSPF_EXT)) return 0;
+
+ if(new->u.ospf.metric2!=0)
+ {
+ if(old->u.ospf.metric2==0) return 0;
+ if(new->u.ospf.metric2<old->u.ospf.metric2) return 1;
+ return 0;
+ }
+ else
+ {
+ if(old->u.ospf.metric2!=0) return 1;
+ if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
+ return 0;
+ }
+}
+
static void
ospf_postconfig(struct proto_config *c)
{
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 13ce8fe..7214a00 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -349,6 +349,8 @@ static void ospf_dump(struct proto *p);
static struct proto *ospf_init(struct proto_config *c);
static void ospf_preconfig(struct protocol *p, struct config *c);
static void ospf_postconfig(struct proto_config *c);
+static int ospf_rte_better(struct rte *new, struct rte *old);
+
#include "proto/ospf/hello.h"
#include "proto/ospf/packet.h"