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1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */2/*3 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.4 */5 6#ifndef _UVERBS_NAMED_IOCTL_7#define _UVERBS_NAMED_IOCTL_8 9#include <rdma/uverbs_ioctl.h>10 11#ifndef UVERBS_MODULE_NAME12#error "Please #define UVERBS_MODULE_NAME before including rdma/uverbs_named_ioctl.h"13#endif14 15#define _UVERBS_PASTE(x, y) x ## y16#define _UVERBS_NAME(x, y) _UVERBS_PASTE(x, y)17#define UVERBS_METHOD(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _method_##id)18#define UVERBS_HANDLER(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _handler_##id)19#define UVERBS_OBJECT(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _object_##id)20 21/* These are static so they do not need to be qualified */22#define UVERBS_METHOD_ATTRS(method_id) _method_attrs_##method_id23#define UVERBS_OBJECT_METHODS(object_id) _UVERBS_NAME(_object_methods_##object_id, __LINE__)24 25#define DECLARE_UVERBS_NAMED_METHOD(_method_id, ...) \26 static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \27 _method_id)[] = { __VA_ARGS__ }; \28 static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \29 .id = _method_id, \30 .handler = UVERBS_HANDLER(_method_id), \31 .num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \32 .attrs = &UVERBS_METHOD_ATTRS(_method_id), \33 }34 35/* Create a standard destroy method using the default handler. The handle_attr36 * argument must be the attribute specifying the handle to destroy, the37 * default handler does not support any other attributes.38 */39#define DECLARE_UVERBS_NAMED_METHOD_DESTROY(_method_id, _handle_attr) \40 static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \41 _method_id)[] = { _handle_attr }; \42 static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \43 .id = _method_id, \44 .handler = uverbs_destroy_def_handler, \45 .num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \46 .attrs = &UVERBS_METHOD_ATTRS(_method_id), \47 }48 49#define DECLARE_UVERBS_NAMED_OBJECT(_object_id, _type_attrs, ...) \50 static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \51 _object_id)[] = { __VA_ARGS__ }; \52 static const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \53 .id = _object_id, \54 .type_attrs = &_type_attrs, \55 .num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \56 .methods = &UVERBS_OBJECT_METHODS(_object_id) \57 }58 59/*60 * Declare global methods. These still have a unique object_id because we61 * identify all uapi methods with a (object,method) tuple. However, they have62 * no type pointer.63 */64#define DECLARE_UVERBS_GLOBAL_METHODS(_object_id, ...) \65 static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \66 _object_id)[] = { __VA_ARGS__ }; \67 static const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \68 .id = _object_id, \69 .num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \70 .methods = &UVERBS_OBJECT_METHODS(_object_id) \71 }72 73/* Used by drivers to declare a complete parsing tree for new methods74 */75#define ADD_UVERBS_METHODS(_name, _object_id, ...) \76 static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \77 _object_id)[] = { __VA_ARGS__ }; \78 static const struct uverbs_object_def _name = { \79 .id = _object_id, \80 .num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \81 .methods = &UVERBS_OBJECT_METHODS(_object_id) \82 };83 84/* Used by drivers to declare a complete parsing tree for a single method that85 * differs only in having additional driver specific attributes.86 */87#define ADD_UVERBS_ATTRIBUTES_SIMPLE(_name, _object_id, _method_id, ...) \88 static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \89 _method_id)[] = { __VA_ARGS__ }; \90 static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \91 .id = _method_id, \92 .num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \93 .attrs = &UVERBS_METHOD_ATTRS(_method_id), \94 }; \95 ADD_UVERBS_METHODS(_name, _object_id, &UVERBS_METHOD(_method_id))96 97#endif98