sharpd: support opaque zapi notifications

Add cli and support to sharpd to exercise the zapi opaque
'notification' features.

Signed-off-by: Mark Stapp <mjs@labn.net>

3 files changed, 59 insertions, 1 deletions

diff --git a/sharpd/sharp_vty.c b/sharpd/sharp_vty.c
index ca2212cd87..3a2a7aa407 100644
--- a/sharpd/sharp_vty.c
+++ b/sharpd/sharp_vty.c
@@ -865,6 +865,24 @@ DEFPY (send_opaque_reg,
 	return CMD_SUCCESS;
 }
 
+/* Opaque notifications - register or unregister */
+DEFPY (send_opaque_notif_reg,
+       send_opaque_notif_reg_cmd,
+       "sharp send opaque notify <reg$reg | unreg> type (1-1000)",
+       SHARP_STR
+       "Send messages for testing\n"
+       "Send opaque messages\n"
+       "Opaque notification messages\n"
+       "Send notify registration\n"
+       "Send notify unregistration\n"
+       "Opaque sub-type code\n"
+       "Opaque sub-type code\n")
+{
+	sharp_zebra_opaque_notif_reg((reg != NULL), type);
+
+	return CMD_SUCCESS;
+}
+
 DEFPY (neigh_discover,
        neigh_discover_cmd,
        "sharp neigh discover [vrf NAME$vrf_name] <A.B.C.D$dst4|X:X::X:X$dst6> IFNAME$ifname",
@@ -1406,6 +1424,7 @@ void sharp_vty_init(void)
 	install_element(ENABLE_NODE, &send_opaque_cmd);
 	install_element(ENABLE_NODE, &send_opaque_unicast_cmd);
 	install_element(ENABLE_NODE, &send_opaque_reg_cmd);
+	install_element(ENABLE_NODE, &send_opaque_notif_reg_cmd);
 	install_element(ENABLE_NODE, &neigh_discover_cmd);
 	install_element(ENABLE_NODE, &import_te_cmd);
 
diff --git a/sharpd/sharp_zebra.c b/sharpd/sharp_zebra.c
index 91fb7f03b1..df18118b02 100644
--- a/sharpd/sharp_zebra.c
+++ b/sharpd/sharp_zebra.c
@@ -805,6 +805,28 @@ static int sharp_opaque_handler(ZAPI_CALLBACK_ARGS)
 	return 0;
 }
 
+/* Handler for opaque notification messages */
+static int sharp_opq_notify_handler(ZAPI_CALLBACK_ARGS)
+{
+	struct stream *s;
+	struct zapi_opaque_notif_info info;
+
+	s = zclient->ibuf;
+
+	if (zclient_opaque_notif_decode(s, &info) != 0)
+		return -1;
+
+	if (info.reg)
+		zlog_debug("%s: received opaque notification REG, type %u => %d/%d/%d",
+			   __func__, info.msg_type, info.proto, info.instance,
+			   info.session_id);
+	else
+		zlog_debug("%s: received opaque notification UNREG, type %u",
+			   __func__, info.msg_type);
+
+	return 0;
+}
+
 /*
  * Send OPAQUE messages, using subtype 'type'.
  */
@@ -841,6 +863,17 @@ void sharp_opaque_send(uint32_t type, uint32_t proto, uint32_t instance,
 }
 
 /*
+ * Register/unregister for opaque notifications from zebra about 'type'.
+ */
+void sharp_zebra_opaque_notif_reg(bool is_reg, uint32_t type)
+{
+	if (is_reg)
+		zclient_opaque_request_notify(zclient, type);
+	else
+		zclient_opaque_drop_notify(zclient, type);
+}
+
+/*
  * Send OPAQUE registration messages, using subtype 'type'.
  */
 void sharp_opaque_reg_send(bool is_reg, uint32_t proto, uint32_t instance,
@@ -1036,6 +1069,7 @@ static zclient_handler *const sharp_handlers[] = {
 	[ZEBRA_REDISTRIBUTE_ROUTE_ADD] = sharp_redistribute_route,
 	[ZEBRA_REDISTRIBUTE_ROUTE_DEL] = sharp_redistribute_route,
 	[ZEBRA_OPAQUE_MESSAGE] = sharp_opaque_handler,
+	[ZEBRA_OPAQUE_NOTIFY] = sharp_opq_notify_handler,
 	[ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] =
 		sharp_zebra_process_srv6_locator_chunk,
 };
diff --git a/sharpd/sharp_zebra.h b/sharpd/sharp_zebra.h
index cf8689799a..025b4d8f82 100644
--- a/sharpd/sharp_zebra.h
+++ b/sharpd/sharp_zebra.h
@@ -39,10 +39,15 @@ int sharp_install_lsps_helper(bool install_p, bool update_p,
 void sharp_opaque_send(uint32_t type, uint32_t proto, uint32_t instance,
 		       uint32_t session_id, uint32_t count);
 
-/* Send OPAQUE registration messages, using subtype 'type'. */
+/* Send OPAQUE registration or notification registration messages,
+ * for opaque subtype 'type'.
+ */
 void sharp_opaque_reg_send(bool is_reg, uint32_t proto, uint32_t instance,
 			   uint32_t session_id, uint32_t type);
 
+/* Register/unregister for opaque notifications from zebra about 'type'. */
+void sharp_zebra_opaque_notif_reg(bool is_reg, uint32_t type);
+
 extern void sharp_zebra_send_arp(const struct interface *ifp,
 				 const struct prefix *p);