net: lwm2m: LwM2M Object path equal API

Added new API for check is 2 object path equal.

Signed-off-by: Juha Heiskanen <juha.heiskanen@nordicsemi.no>

subsys/net/lib/lwm2m/lwm2m_observation.c

@@ -1468,18 +1468,6 @@ void lwm2m_engine_free_list(sys_slist_t *path_list, sys_slist_t *free_list)
 	}
 }
 
-static bool lwm2m_path_object_compare(struct lwm2m_obj_path *path,
-				      struct lwm2m_obj_path *compare_path)
-{
-	if (path->level != compare_path->level || path->obj_id != compare_path->obj_id ||
-	    path->obj_inst_id != compare_path->obj_inst_id ||
-	    path->res_id != compare_path->res_id ||
-	    path->res_inst_id != compare_path->res_inst_id) {
-		return false;
-	}
-	return true;
-}
-
 void lwm2m_engine_path_list_init(sys_slist_t *lwm2m_path_list, sys_slist_t *lwm2m_free_list,
 				 struct lwm2m_obj_path_list path_object_buf[],
 				 uint8_t path_object_size)
@@ -1519,7 +1507,7 @@ int lwm2m_engine_add_path_to_list(sys_slist_t *lwm2m_path_list, sys_slist_t *lwm
 		/* Keep list Ordered by Object ID/ Object instance/ resource ID */
 		SYS_SLIST_FOR_EACH_CONTAINER(lwm2m_path_list, entry, node) {
 			if (entry->path.level == LWM2M_PATH_LEVEL_NONE ||
-			    lwm2m_path_object_compare(&entry->path, &new_entry->path)) {
+			    lwm2m_obj_path_equal(&entry->path, &new_entry->path)) {
 				/* Already Root request at list or current path is at list */
 				sys_slist_append(lwm2m_free_list, &new_entry->node);
 				return 0;

subsys/net/lib/lwm2m/lwm2m_util.c

@@ -551,3 +551,30 @@ int lwm2m_string_to_path(const char *pathstr, struct lwm2m_obj_path *path,
 
 	return 0;
 }
+
+bool lwm2m_obj_path_equal(struct lwm2m_obj_path *a, struct lwm2m_obj_path *b)
+{
+	uint8_t level = a->level;
+
+	if (a->level != b->level) {
+		return false;
+	}
+
+	if (level >= LWM2M_PATH_LEVEL_OBJECT && (a->obj_id != b->obj_id)) {
+		return false;
+	}
+
+	if (level >= LWM2M_PATH_LEVEL_OBJECT_INST && (a->obj_inst_id != b->obj_inst_id)) {
+		return false;
+	}
+
+	if (level >= LWM2M_PATH_LEVEL_RESOURCE && (a->res_id != b->res_id)) {
+		return false;
+	}
+
+	if (level >= LWM2M_PATH_LEVEL_RESOURCE_INST && (a->res_inst_id != b->res_inst_id)) {
+		return false;
+	}
+
+	return true;
+}

subsys/net/lib/lwm2m/lwm2m_util.h

@@ -33,4 +33,5 @@ int lwm2m_path_to_string(char *buf, size_t buf_size, struct lwm2m_obj_path *inpu
 
 int lwm2m_string_to_path(const char *pathstr, struct lwm2m_obj_path *path, char delim);
 
+bool lwm2m_obj_path_equal(struct lwm2m_obj_path *a, struct lwm2m_obj_path *b);
 #endif /* LWM2M_UTIL_H_ */