staticd: add command to show monitored routes

Add command to visualize all monitored routes and their state.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

3 files changed, 184 insertions, 0 deletions

diff --git a/staticd/static_bfd.c b/staticd/static_bfd.c
index dda048713..a955d155e 100644
--- a/staticd/static_bfd.c
+++ b/staticd/static_bfd.c
@@ -217,3 +217,171 @@ void static_bfd_initialize(struct zclient *zc, struct thread_master *tm)
 	/* Initialize BFD integration library. */
 	bfd_protocol_integration_init(zc, tm);
 }
+
+/*
+ * Display functions
+ */
+static void static_bfd_show_nexthop_json(struct vty *vty,
+					 struct json_object *jo,
+					 const struct static_nexthop *sn)
+{
+	const struct prefix *dst_p, *src_p;
+	struct json_object *jo_nh;
+
+	jo_nh = json_object_new_object();
+
+	srcdest_rnode_prefixes(sn->rn, &dst_p, &src_p);
+	if (src_p)
+		json_object_string_addf(jo_nh, "from", "%pFX", src_p);
+
+	json_object_string_addf(jo_nh, "prefix", "%pFX", dst_p);
+	json_object_string_add(jo_nh, "vrf", sn->nh_vrfname);
+
+	json_object_boolean_add(jo_nh, "installed", !sn->path_down);
+
+	json_object_array_add(jo, jo_nh);
+}
+
+static void static_bfd_show_path_json(struct vty *vty, struct json_object *jo,
+				      struct route_table *rt)
+{
+	struct route_node *rn;
+
+	for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) {
+		struct static_route_info *si = static_route_info_from_rnode(rn);
+		struct static_path *sp;
+
+		if (si == NULL)
+			continue;
+
+		frr_each (static_path_list, &si->path_list, sp) {
+			struct static_nexthop *sn;
+
+			frr_each (static_nexthop_list, &sp->nexthop_list, sn) {
+				/* Skip non configured BFD sessions. */
+				if (sn->bsp == NULL)
+					continue;
+
+				static_bfd_show_nexthop_json(vty, jo, sn);
+			}
+		}
+	}
+}
+
+static void static_bfd_show_json(struct vty *vty)
+{
+	struct json_object *jo, *jo_path, *jo_afi_safi;
+	struct vrf *vrf;
+
+	jo = json_object_new_object();
+	jo_path = json_object_new_object();
+
+	json_object_object_add(jo, "path-list", jo_path);
+	RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
+		const struct static_vrf *svrf = vrf->info;
+		struct route_table *rt;
+
+		jo_afi_safi = json_object_new_array();
+		json_object_object_add(jo_path, "ipv4-unicast", jo_afi_safi);
+		rt = svrf->stable[AFI_IP][SAFI_UNICAST];
+		if (rt)
+			static_bfd_show_path_json(vty, jo_afi_safi, rt);
+
+		jo_afi_safi = json_object_new_array();
+		json_object_object_add(jo_path, "ipv4-multicast", jo_afi_safi);
+		rt = svrf->stable[AFI_IP][SAFI_MULTICAST];
+		if (rt)
+			static_bfd_show_path_json(vty, jo_afi_safi, rt);
+
+		jo_afi_safi = json_object_new_array();
+		json_object_object_add(jo_path, "ipv6-unicast", jo_afi_safi);
+		rt = svrf->stable[AFI_IP6][SAFI_UNICAST];
+		if (rt)
+			static_bfd_show_path_json(vty, jo_afi_safi, rt);
+	}
+
+	vty_out(vty, "%s\n", json_object_to_json_string_ext(jo, 0));
+	json_object_free(jo);
+}
+
+static void static_bfd_show_nexthop(struct vty *vty,
+				    const struct static_nexthop *sn)
+{
+	vty_out(vty, "        %pRN", sn->rn);
+
+	if (sn->bsp == NULL) {
+		vty_out(vty, "\n");
+		return;
+	}
+
+	if (sn->type == STATIC_IPV4_GATEWAY ||
+	    sn->type == STATIC_IPV4_GATEWAY_IFNAME)
+		vty_out(vty, " peer %pI4", &sn->addr.ipv4);
+	else if (sn->type == STATIC_IPV6_GATEWAY ||
+		 sn->type == STATIC_IPV6_GATEWAY_IFNAME)
+		vty_out(vty, " peer %pI6", &sn->addr.ipv6);
+	else
+		vty_out(vty, " peer unknown");
+
+	vty_out(vty, " (status: %s)\n",
+		sn->path_down ? "uninstalled" : "installed");
+}
+
+static void static_bfd_show_path(struct vty *vty, struct route_table *rt)
+{
+	struct route_node *rn;
+
+	for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) {
+		struct static_route_info *si = static_route_info_from_rnode(rn);
+		struct static_path *sp;
+
+		if (si == NULL)
+			continue;
+
+		frr_each (static_path_list, &si->path_list, sp) {
+			struct static_nexthop *sn;
+
+			frr_each (static_nexthop_list, &sp->nexthop_list, sn) {
+				/* Skip non configured BFD sessions. */
+				if (sn->bsp == NULL)
+					continue;
+
+				static_bfd_show_nexthop(vty, sn);
+			}
+		}
+	}
+}
+
+void static_bfd_show(struct vty *vty, bool json)
+{
+	struct vrf *vrf;
+
+	if (json) {
+		static_bfd_show_json(vty);
+		return;
+	}
+
+	vty_out(vty, "Showing BFD monitored static routes:\n");
+	vty_out(vty, "\n  Next hops:\n");
+	RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
+		const struct static_vrf *svrf = vrf->info;
+		struct route_table *rt;
+
+		vty_out(vty, "    VRF %s IPv4 Unicast:\n", vrf->name);
+		rt = svrf->stable[AFI_IP][SAFI_UNICAST];
+		if (rt)
+			static_bfd_show_path(vty, rt);
+
+		vty_out(vty, "\n    VRF %s IPv4 Multicast:\n", vrf->name);
+		rt = svrf->stable[AFI_IP][SAFI_MULTICAST];
+		if (rt)
+			static_bfd_show_path(vty, rt);
+
+		vty_out(vty, "\n    VRF %s IPv6 Unicast:\n", vrf->name);
+		rt = svrf->stable[AFI_IP6][SAFI_UNICAST];
+		if (rt)
+			static_bfd_show_path(vty, rt);
+	}
+
+	vty_out(vty, "\n");
+}
diff --git a/staticd/static_routes.h b/staticd/static_routes.h
index 7082e8959..2332cfd2b 100644
--- a/staticd/static_routes.h
+++ b/staticd/static_routes.h
@@ -244,6 +244,8 @@ extern void static_next_hop_bfd_multi_hop(struct static_nexthop *sn, bool mhop);
 /** Call this function after zebra client initialization. */
 extern void static_bfd_initialize(struct zclient *zc, struct thread_master *tm);
 
+extern void static_bfd_show(struct vty *vty, bool isjson);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/staticd/static_vty.c b/staticd/static_vty.c
index 0d4a91f34..d62ea092b 100644
--- a/staticd/static_vty.c
+++ b/staticd/static_vty.c
@@ -1471,6 +1471,18 @@ DEFPY_YANG(debug_staticd, debug_staticd_cmd,
 	return CMD_SUCCESS;
 }
 
+DEFPY(staticd_show_bfd_routes, staticd_show_bfd_routes_cmd,
+      "show bfd static route [json]$isjson",
+      SHOW_STR
+      BFD_INTEGRATION_STR
+      STATICD_STR
+      ROUTE_STR
+      JSON_STR)
+{
+	static_bfd_show(vty, !!isjson);
+	return CMD_SUCCESS;
+}
+
 DEFUN_NOSH (show_debugging_static,
 	    show_debugging_static_cmd,
 	    "show debugging [static]",
@@ -1517,4 +1529,6 @@ void static_vty_init(void)
 	install_element(ENABLE_NODE, &show_debugging_static_cmd);
 	install_element(ENABLE_NODE, &debug_staticd_cmd);
 	install_element(CONFIG_NODE, &debug_staticd_cmd);
+
+	install_element(ENABLE_NODE, &staticd_show_bfd_routes_cmd);
 }