Implement onlink flag for nexthops

Add proper support for per-nexthop onlink flag in routes to handle next
hop addresses that are not covered by interface IP ranges. Supported by
kernel and static protocols.

Thanks to Vincent Bernat for the idea.

1 files changed, 5 insertions, 1 deletions

diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 1b7f5836..761ba9fe 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -171,7 +171,9 @@ nexthop__same(struct nexthop *x, struct nexthop *y)
 {
   for (; x && y; x = x->next, y = y->next)
   {
-    if (!ipa_equal(x->gw, y->gw) || (x->iface != y->iface) || (x->weight != y->weight) || (x->labels != y->labels))
+    if (!ipa_equal(x->gw, y->gw) || (x->iface != y->iface) ||
+	(x->flags != y->flags) || (x->weight != y->weight) ||
+	(x->labels != y->labels))
       return 0;
 
     for (int i = 0; i < x->labels; i++)
@@ -193,6 +195,8 @@ nexthop_compare_node(struct nexthop *x, struct nexthop *y)
   if (!y)
     return -1;
 
+  /* Should we also compare flags ? */
+
   r = ((int) y->weight) - ((int) x->weight);
   if (r)
     return r;