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authorpaul <paul>2006-01-18 14:52:52 +0000
committerpaul <paul>2006-01-18 14:52:52 +0000
commitaf887b5111ada0e8cd961e9479aa9d39796a80c8 (patch)
tree0bc5674824e5cebe0c0bd17ef34eac99f7b68a48 /zebra
parenteac314c7c49f6c0ec502be08e244f91bfc778739 (diff)
2006-01-18 Gunnar Stigen <gunnar.stigen@axxessit.no>
* zebra_rib.c: Take interface metric into account.
Diffstat (limited to 'zebra')
-rw-r--r--zebra/ChangeLog4
-rw-r--r--zebra/zebra_rib.c21
2 files changed, 21 insertions, 4 deletions
diff --git a/zebra/ChangeLog b/zebra/ChangeLog
index a40d3e93..b33180f7 100644
--- a/zebra/ChangeLog
+++ b/zebra/ChangeLog
@@ -1,3 +1,7 @@
+2006-01-18 Gunnar Stigen <gunnar.stigen@axxessit.no>
+
+ * zebra_rib.c: Take interface metric into account.
+
2006-01-17 Paul Jakma <paul.jakma@sun.com>
* kernel_socket.c: (ifam_read) Read metric from RTM_NEWADDR.
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c
index fb983bdb..5d9cb2f6 100644
--- a/zebra/zebra_rib.c
+++ b/zebra/zebra_rib.c
@@ -919,10 +919,23 @@ rib_process (struct work_queue *wq, void *data)
if (rib->distance == DISTANCE_INFINITY)
continue;
- /* Newly selected rib. */
- if (! select || rib->distance < select->distance
- || rib->type == ZEBRA_ROUTE_CONNECT)
- select = rib;
+ /* Newly selected rib, the common case. */
+ if (!select)
+ {
+ select = rib;
+ continue;
+ }
+
+ /* filter route selection in following order:
+ * - lower distance beats higher
+ * - connected beats other types
+ * - lower metric beats higher for equal distance
+ * - last, hence oldest, route wins tie break.
+ */
+ if ((rib->type == ZEBRA_ROUTE_CONNECT)
+ || (rib->distance <= select->distance))
+ if (rib->metric <= select->metric)
+ select = rib;
}
/* Deleted route check. */