ripngd: retrofit the 'network' command to the new northbound model

The frr-ripngd YANG module models the ripngd "network" command
using two separate leaf-lists for simplicity: one leaf-list
for interfaces and another leaf-list for actual networks. In the
'cli_show' callbacks, display the "network" command for entries of
both leaf-lists.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

ripngd/ripng_cli.c

@@ -159,6 +159,50 @@ void cli_show_ripng_default_metric(struct vty *vty, struct lyd_node *dnode,
 		yang_dnode_get_string(dnode, NULL));
 }
 
+/*
+ * XPath: /frr-ripngd:ripngd/instance/network
+ */
+DEFPY (ripng_network_prefix,
+       ripng_network_prefix_cmd,
+       "[no] network X:X::X:X/M",
+       NO_STR
+       "RIPng enable on specified interface or network.\n"
+       "IPv6 network\n")
+{
+	nb_cli_enqueue_change(vty, "./network",
+			      no ? NB_OP_DELETE : NB_OP_CREATE, network_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ripng_network_prefix(struct vty *vty, struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	vty_out(vty, " network %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-ripngd:ripngd/instance/interface
+ */
+DEFPY (ripng_network_if,
+       ripng_network_if_cmd,
+       "[no] network WORD",
+       NO_STR
+       "RIPng enable on specified interface or network.\n"
+       "Interface name\n")
+{
+	nb_cli_enqueue_change(vty, "./interface",
+			      no ? NB_OP_DELETE : NB_OP_CREATE, network);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ripng_network_interface(struct vty *vty, struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	vty_out(vty, " network %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
 void ripng_cli_init(void)
 {
 	install_element(CONFIG_NODE, &router_ripng_cmd);
@@ -168,4 +212,6 @@ void ripng_cli_init(void)
 	install_element(RIPNG_NODE, &ripng_default_information_originate_cmd);
 	install_element(RIPNG_NODE, &ripng_default_metric_cmd);
 	install_element(RIPNG_NODE, &no_ripng_default_metric_cmd);
+	install_element(RIPNG_NODE, &ripng_network_prefix_cmd);
+	install_element(RIPNG_NODE, &ripng_network_if_cmd);
 }

ripngd/ripng_cli.h

@@ -31,5 +31,11 @@ extern void cli_show_ripng_default_information_originate(struct vty *vty,
 extern void cli_show_ripng_default_metric(struct vty *vty,
 					  struct lyd_node *dnode,
 					  bool show_defaults);
+extern void cli_show_ripng_network_prefix(struct vty *vty,
+					  struct lyd_node *dnode,
+					  bool show_defaults);
+extern void cli_show_ripng_network_interface(struct vty *vty,
+					     struct lyd_node *dnode,
+					     bool show_defaults);
 
 #endif /* _FRR_RIPNG_CLI_H_ */

ripngd/ripng_interface.c

@@ -543,7 +543,7 @@ static int ripng_enable_network_lookup2(struct connected *connected)
 }
 
 /* Add RIPng enable network. */
-static int ripng_enable_network_add(struct prefix *p)
+int ripng_enable_network_add(struct prefix *p)
 {
 	struct agg_node *node;
 
@@ -551,18 +551,18 @@ static int ripng_enable_network_add(struct prefix *p)
 
 	if (node->info) {
 		agg_unlock_node(node);
-		return -1;
+		return NB_ERR_INCONSISTENCY;
 	} else
 		node->info = (void *)1;
 
 	/* XXX: One should find a better solution than a generic one */
 	ripng_enable_apply_all();
 
-	return 1;
+	return NB_OK;
 }
 
 /* Delete RIPng enable network. */
-static int ripng_enable_network_delete(struct prefix *p)
+int ripng_enable_network_delete(struct prefix *p)
 {
 	struct agg_node *node;
 
@@ -576,9 +576,10 @@ static int ripng_enable_network_delete(struct prefix *p)
 		/* Unlock lookup lock. */
 		agg_unlock_node(node);
 
-		return 1;
+		return NB_OK;
 	}
-	return -1;
+
+	return NB_ERR_INCONSISTENCY;
 }
 
 /* Lookup function. */
@@ -595,30 +596,30 @@ static int ripng_enable_if_lookup(const char *ifname)
 }
 
 /* Add interface to ripng_enable_if. */
-static int ripng_enable_if_add(const char *ifname)
+int ripng_enable_if_add(const char *ifname)
 {
 	int ret;
 
 	ret = ripng_enable_if_lookup(ifname);
 	if (ret >= 0)
-		return -1;
+		return NB_ERR_INCONSISTENCY;
 
 	vector_set(ripng_enable_if, strdup(ifname));
 
 	ripng_enable_apply_all();
 
-	return 1;
+	return NB_OK;
 }
 
 /* Delete interface from ripng_enable_if. */
-static int ripng_enable_if_delete(const char *ifname)
+int ripng_enable_if_delete(const char *ifname)
 {
 	int index;
 	char *str;
 
 	index = ripng_enable_if_lookup(ifname);
 	if (index < 0)
-		return -1;
+		return NB_ERR_INCONSISTENCY;
 
 	str = vector_slot(ripng_enable_if, index);
 	free(str);
@@ -626,7 +627,7 @@ static int ripng_enable_if_delete(const char *ifname)
 
 	ripng_enable_apply_all();
 
-	return 1;
+	return NB_OK;
 }
 
 /* Wake up interface. */
@@ -909,63 +910,6 @@ int ripng_network_write(struct vty *vty, int config_mode)
 	return 0;
 }
 
-/* RIPng enable on specified interface or matched network. */
-DEFUN (ripng_network,
-       ripng_network_cmd,
-       "network IF_OR_ADDR",
-       "RIPng enable on specified interface or network.\n"
-       "Interface or address\n")
-{
-	int idx_if_or_addr = 1;
-	int ret;
-	struct prefix p;
-
-	ret = str2prefix(argv[idx_if_or_addr]->arg, &p);
-
-	/* Given string is IPv6 network or interface name. */
-	if (ret)
-		ret = ripng_enable_network_add(&p);
-	else
-		ret = ripng_enable_if_add(argv[idx_if_or_addr]->arg);
-
-	if (ret < 0) {
-		vty_out(vty, "There is same network configuration %s\n",
-			argv[idx_if_or_addr]->arg);
-		return CMD_WARNING_CONFIG_FAILED;
-	}
-
-	return CMD_SUCCESS;
-}
-
-/* RIPng enable on specified interface or matched network. */
-DEFUN (no_ripng_network,
-       no_ripng_network_cmd,
-       "no network IF_OR_ADDR",
-       NO_STR
-       "RIPng enable on specified interface or network.\n"
-       "Interface or address\n")
-{
-	int idx_if_or_addr = 2;
-	int ret;
-	struct prefix p;
-
-	ret = str2prefix(argv[idx_if_or_addr]->arg, &p);
-
-	/* Given string is interface name. */
-	if (ret)
-		ret = ripng_enable_network_delete(&p);
-	else
-		ret = ripng_enable_if_delete(argv[idx_if_or_addr]->arg);
-
-	if (ret < 0) {
-		vty_out(vty, "can't find network %s\n",
-			argv[idx_if_or_addr]->arg);
-		return CMD_WARNING_CONFIG_FAILED;
-	}
-
-	return CMD_SUCCESS;
-}
-
 DEFUN (ipv6_ripng_split_horizon,
        ipv6_ripng_split_horizon_cmd,
        "ipv6 ripng split-horizon",
@@ -1138,8 +1082,6 @@ void ripng_if_init()
 	install_node(&interface_node, interface_config_write);
 	if_cmd_init();
 
-	install_element(RIPNG_NODE, &ripng_network_cmd);
-	install_element(RIPNG_NODE, &no_ripng_network_cmd);
 	install_element(RIPNG_NODE, &ripng_passive_interface_cmd);
 	install_element(RIPNG_NODE, &no_ripng_passive_interface_cmd);
 

ripngd/ripng_northbound.c

@@ -140,15 +140,29 @@ static int ripngd_instance_network_create(enum nb_event event,
 					  const struct lyd_node *dnode,
 					  union nb_resource *resource)
 {
-	/* TODO: implement me. */
+	struct prefix p;
-	return NB_OK;
+
+	if (event != NB_EV_APPLY)
+		return NB_OK;
+
+	yang_dnode_get_ipv6p(&p, dnode, NULL);
+	apply_mask_ipv6((struct prefix_ipv6 *)&p);
+
+	return ripng_enable_network_add(&p);
 }
 
 static int ripngd_instance_network_delete(enum nb_event event,
 					  const struct lyd_node *dnode)
 {
-	/* TODO: implement me. */
+	struct prefix p;
-	return NB_OK;
+
+	if (event != NB_EV_APPLY)
+		return NB_OK;
+
+	yang_dnode_get_ipv6p(&p, dnode, NULL);
+	apply_mask_ipv6((struct prefix_ipv6 *)&p);
+
+	return ripng_enable_network_delete(&p);
 }
 
 /*
@@ -158,15 +172,27 @@ static int ripngd_instance_interface_create(enum nb_event event,
 					    const struct lyd_node *dnode,
 					    union nb_resource *resource)
 {
-	/* TODO: implement me. */
+	const char *ifname;
-	return NB_OK;
+
+	if (event != NB_EV_APPLY)
+		return NB_OK;
+
+	ifname = yang_dnode_get_string(dnode, NULL);
+
+	return ripng_enable_if_add(ifname);
 }
 
 static int ripngd_instance_interface_delete(enum nb_event event,
 					    const struct lyd_node *dnode)
 {
-	/* TODO: implement me. */
+	const char *ifname;
-	return NB_OK;
+
+	if (event != NB_EV_APPLY)
+		return NB_OK;
+
+	ifname = yang_dnode_get_string(dnode, NULL);
+
+	return ripng_enable_if_delete(ifname);
 }
 
 /*
@@ -554,11 +580,13 @@ const struct frr_yang_module_info frr_ripngd_info = {
 			.xpath = "/frr-ripngd:ripngd/instance/network",
 			.cbs.create = ripngd_instance_network_create,
 			.cbs.delete = ripngd_instance_network_delete,
+			.cbs.cli_show = cli_show_ripng_network_prefix,
 		},
 		{
 			.xpath = "/frr-ripngd:ripngd/instance/interface",
 			.cbs.create = ripngd_instance_interface_create,
 			.cbs.delete = ripngd_instance_interface_delete,
+			.cbs.cli_show = cli_show_ripng_network_interface,
 		},
 		{
 			.xpath = "/frr-ripngd:ripngd/instance/offset-list",

ripngd/ripngd.c

@@ -2522,8 +2522,6 @@ static int ripng_config_write(struct vty *vty)
 	if (dnode) {
 		nb_cli_show_dnode_cmds(vty, dnode, false);
 
-		ripng_network_write(vty, 1);
-
 		ripng_redistribute_write(vty, 1);
 
 		/* RIP offset-list configuration. */

ripngd/ripngd.h

@@ -337,6 +337,10 @@ extern void ripng_clean(void);
 extern void ripng_clean_network(void);
 extern void ripng_interface_clean(void);
 extern void ripng_interface_reset(void);
+extern int ripng_enable_network_add(struct prefix *p);
+extern int ripng_enable_network_delete(struct prefix *p);
+extern int ripng_enable_if_add(const char *ifname);
+extern int ripng_enable_if_delete(const char *ifname);
 extern void ripng_passive_interface_clean(void);
 extern void ripng_if_init(void);
 extern void ripng_route_map_init(void);