+/** Prototype of a server command handler. */
+typedef int (*server_cmd_handler_t)(struct command_context *,
+ struct lls_parse_result *);
+
+/**
+ * The lopsub user data structure for server commands.
+ *
+ * One such structure exists for each server command. Lopsub maintains
+ * references to the user data structures and provides lls_user_data() for
+ * applications to fetch the user data pointer of a given command. This
+ * mechanism is used by the dispatcher of command.c to run the command handler.
+ */
+struct server_cmd_user_data {
+ /** Pointer to the command handler. */
+ server_cmd_handler_t handler;
+};
+
+/** Define the user data structure for one command. */
+#define EXPORT_SERVER_CMD_HANDLER(_cmd) \
+ const struct server_cmd_user_data lsg_server_cmd_com_ ## _cmd ## _user_data = { \
+ .handler = com_ ## _cmd \
+ };
+
+/** Get the lopsub command pointer by command name. */
+#define SERVER_CMD_CMD_PTR(_cmd) \
+ (lls_cmd(LSG_SERVER_CMD_CMD_ ## _cmd, server_cmd_suite))
+
+/** Get the lopsub parse result of an option. */
+#define SERVER_CMD_OPT_RESULT(_cmd, _opt, _lpr) \
+ (lls_opt_result(LSG_SERVER_CMD_ ## _cmd ## _OPT_ ## _opt, _lpr))
+
+/** How many times an option was given. */
+#define SERVER_CMD_OPT_GIVEN(_cmd, _opt, _lpr) \
+ (lls_opt_given(SERVER_CMD_OPT_RESULT(_cmd, _opt, _lpr)))
+
+/** Fetch the (first) argument given to an option of type uint32. */
+#define SERVER_CMD_UINT32_VAL(_cmd, _opt, _lpr) \
+ (lls_uint32_val(0, SERVER_CMD_OPT_RESULT(_cmd, _opt, _lpr)))
+