1 files changed, 61 insertions, 0 deletions

diff --git a/staticd/static_routes.c b/staticd/static_routes.c
index cd0330ed8..7fbeb1785 100644
--- a/staticd/static_routes.c
+++ b/staticd/static_routes.c
@@ -497,6 +497,67 @@ void static_cleanup_vrf_ids(struct static_vrf *disable_svrf)
 	}
 }
 
+/*
+ * This function enables static routes when an interface it relies
+ * on in a different vrf is coming up.
+ *
+ * svrf -> The svrf that ifp is being brought up
+ * stable -> The stable we are looking at.
+ * ifp -> interface coming up
+ * afi -> the afi in question
+ * safi -> the safi in question
+ */
+static void static_fixup_intf_nh(struct route_table *stable,
+				 struct interface *ifp,
+				 afi_t afi, safi_t safi)
+{
+	struct route_node *rn;
+	struct static_route *si;
+
+	for (rn = route_top(stable); rn; rn = route_next(rn)) {
+		for (si = rn->info; si; si = si->next) {
+			if (si->nh_vrf_id != ifp->vrf_id)
+				continue;
+
+			if (si->ifindex != ifp->ifindex)
+				continue;
+
+			static_install_route(rn, si, safi);
+		}
+	}
+}
+
+/*
+ * This function enables static routes that rely on an interface in
+ * a different vrf when that interface comes up.
+ */
+void static_install_intf_nh(struct interface *ifp)
+{
+	struct route_table *stable;
+	struct vrf *vrf;
+	afi_t afi;
+	safi_t safi;
+
+	RB_FOREACH(vrf, vrf_name_head, &vrfs_by_name) {
+		struct static_vrf *svrf = vrf->info;
+
+		/* Not needed if same vrf since happens naturally */
+		if (vrf->vrf_id == ifp->vrf_id)
+			continue;
+
+		/* Install any static routes configured for this interface. */
+		for (afi = AFI_IP; afi < AFI_MAX; afi++) {
+			for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++) {
+				stable = svrf->stable[afi][safi];
+				if (!stable)
+					continue;
+
+				static_fixup_intf_nh(stable, ifp, afi, safi);
+			}
+		}
+	}
+}
+
 /* called from if_{add,delete}_update, i.e. when ifindex becomes [in]valid */
 void static_ifindex_update(struct interface *ifp, bool up)
 {