From: Stephen Worley <sworley@cumulusnetworks.com>
Date: Tue, 14 May 2019 17:11:30 +0000 (-0700)
Subject: zebra: Add interface down marking to NHE's
X-Git-Tag: base_7.3~219^2~107
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=f862383fc9f0055dc068d5374e5efc7b49a23e2e;p=mirror%2Ffrr.git

zebra: Add interface down marking to NHE's

Add functionality to allow an interface down event to mark
any dependent NHE's as invalid.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
---

diff --git a/zebra/interface.c b/zebra/interface.c
index 8fe7af3f2a..798cb92690 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -983,7 +983,17 @@ bool if_nhg_dependents_is_empty(const struct interface *ifp)
 	return false;
 }
 
+void if_down_nhg_dependents(const struct interface *ifp)
 {
+	if (!if_nhg_dependents_is_empty(ifp)) {
+		struct nhg_connected *rb_node_dep = NULL;
+		struct zebra_if *zif = (struct zebra_if *)ifp->info;
+
+		RB_FOREACH (rb_node_dep, nhg_connected_head,
+			    &zif->nhg_dependents) {
+			zebra_nhg_set_invalid(rb_node_dep->nhe);
+		}
+	}
 }
 
 /* Interface is up. */
@@ -1049,6 +1059,8 @@ void if_down(struct interface *ifp)
 	zif->down_count++;
 	quagga_timestamp(2, zif->down_last, sizeof(zif->down_last));
 
+	if_down_nhg_dependents(ifp);
+
 	/* Handle interface down for specific types for EVPN. Non-VxLAN
 	 * interfaces
 	 * are checked to see if (remote) neighbor entries need to be purged
diff --git a/zebra/interface.h b/zebra/interface.h
index d5c1e17131..c5614a2a60 100644
--- a/zebra/interface.h
+++ b/zebra/interface.h
@@ -441,6 +441,7 @@ extern void if_nhg_dependents_del(struct interface *ifp,
 				  struct nhg_hash_entry *nhe);
 extern unsigned int if_nhg_dependents_count(const struct interface *ifp);
 extern bool if_nhg_dependents_is_empty(const struct interface *ifp);
+extern void if_down_nhg_dependents(const struct interface *ifp);
 
 extern void vrf_add_update(struct vrf *vrfp);