yang, lib: add 'frr-interface.yang' and associated stub callbacks

Introduce frr-interface.yang, which defines a model for managing FRR
interfaces.

Update the 'frr_yang_module_info' array of all daemons that will
implement this module.

Add automatically generated stub callbacks in if.c. These callbacks will
be implemented in the following commit.

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

2 files changed, 62 insertions, 1 deletions

diff --git a/lib/if.c b/lib/if.c
index e952313e8e..6cf5678554 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -1211,3 +1211,61 @@ void if_link_params_free(struct interface *ifp)
 	XFREE(MTYPE_IF_LINK_PARAMS, ifp->link_params);
 	ifp->link_params = NULL;
 }
+
+/* ------- Northbound callbacks ------- */
+
+/*
+ * XPath: /frr-interface:lib/interface
+ */
+static int lib_interface_create(enum nb_event event,
+				const struct lyd_node *dnode,
+				union nb_resource *resource)
+{
+	/* TODO: implement me. */
+	return NB_OK;
+}
+
+static int lib_interface_delete(enum nb_event event,
+				const struct lyd_node *dnode)
+{
+	/* TODO: implement me. */
+	return NB_OK;
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/description
+ */
+static int lib_interface_description_modify(enum nb_event event,
+					    const struct lyd_node *dnode,
+					    union nb_resource *resource)
+{
+	/* TODO: implement me. */
+	return NB_OK;
+}
+
+static int lib_interface_description_delete(enum nb_event event,
+					    const struct lyd_node *dnode)
+{
+	/* TODO: implement me. */
+	return NB_OK;
+}
+
+/* clang-format off */
+const struct frr_yang_module_info frr_interface_info = {
+	.name = "frr-interface",
+	.nodes = {
+		{
+			.xpath = "/frr-interface:lib/interface",
+			.cbs.create = lib_interface_create,
+			.cbs.delete = lib_interface_delete,
+		},
+		{
+			.xpath = "/frr-interface:lib/interface/description",
+			.cbs.modify = lib_interface_description_modify,
+			.cbs.delete = lib_interface_description_delete,
+		},
+		{
+			.xpath = NULL,
+		},
+	}
+};
diff --git a/lib/if.h b/lib/if.h
index bd5cc17704..24a86c7642 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -497,7 +497,6 @@ extern bool if_is_loopback_or_vrf(struct interface *ifp);
 extern int if_is_broadcast(struct interface *);
 extern int if_is_pointopoint(struct interface *);
 extern int if_is_multicast(struct interface *);
-extern void if_cmd_init(void);
 struct vrf;
 extern void if_terminate(struct vrf *vrf);
 extern void if_dump_all(void);
@@ -534,4 +533,8 @@ struct nbr_connected *nbr_connected_check(struct interface *, struct prefix *);
 struct if_link_params *if_link_params_get(struct interface *);
 void if_link_params_free(struct interface *);
 
+/* Northbound. */
+extern void if_cmd_init(void);
+extern const struct frr_yang_module_info frr_interface_info;
+
 #endif /* _ZEBRA_IF_H */