Current File : //usr/src/kernels/3.10.0-1160.80.1.el7.centos.plus.x86_64/include/rdma/uverbs_named_ioctl.h
/*
* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _UVERBS_NAMED_IOCTL_
#define _UVERBS_NAMED_IOCTL_
#include <rdma/uverbs_ioctl.h>
#ifndef UVERBS_MODULE_NAME
#error "Please #define UVERBS_MODULE_NAME before including rdma/uverbs_named_ioctl.h"
#endif
#define _UVERBS_PASTE(x, y) x ## y
#define _UVERBS_NAME(x, y) _UVERBS_PASTE(x, y)
#define UVERBS_METHOD(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _method_##id)
#define UVERBS_HANDLER(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _handler_##id)
#define UVERBS_OBJECT(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _object_##id)
/* These are static so they do not need to be qualified */
#define UVERBS_METHOD_ATTRS(method_id) _method_attrs_##method_id
#define UVERBS_OBJECT_METHODS(object_id) _object_methods_##object_id
#define DECLARE_UVERBS_NAMED_METHOD(_method_id, ...) \
static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
_method_id)[] = { __VA_ARGS__ }; \
static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
.id = _method_id, \
.handler = UVERBS_HANDLER(_method_id), \
.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
}
/* Create a standard destroy method using the default handler. The handle_attr
* argument must be the attribute specifying the handle to destroy, the
* default handler does not support any other attributes.
*/
#define DECLARE_UVERBS_NAMED_METHOD_DESTROY(_method_id, _handle_attr) \
static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
_method_id)[] = { _handle_attr }; \
static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
.id = _method_id, \
.handler = uverbs_destroy_def_handler, \
.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
}
#define DECLARE_UVERBS_NAMED_OBJECT(_object_id, _type_attrs, ...) \
static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
_object_id)[] = { __VA_ARGS__ }; \
const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \
.id = _object_id, \
.type_attrs = &_type_attrs, \
.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
.methods = &UVERBS_OBJECT_METHODS(_object_id) \
}
/*
* Declare global methods. These still have a unique object_id because we
* identify all uapi methods with a (object,method) tuple. However, they have
* no type pointer.
*/
#define DECLARE_UVERBS_GLOBAL_METHODS(_object_id, ...) \
static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
_object_id)[] = { __VA_ARGS__ }; \
const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \
.id = _object_id, \
.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
.methods = &UVERBS_OBJECT_METHODS(_object_id) \
}
/* Used by drivers to declare a complete parsing tree for new methods
*/
#define ADD_UVERBS_METHODS(_name, _object_id, ...) \
static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
_object_id)[] = { __VA_ARGS__ }; \
static const struct uverbs_object_def _name = { \
.id = _object_id, \
.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
.methods = &UVERBS_OBJECT_METHODS(_object_id) \
};
/* Used by drivers to declare a complete parsing tree for a single method that
* differs only in having additional driver specific attributes.
*/
#define ADD_UVERBS_ATTRIBUTES_SIMPLE(_name, _object_id, _method_id, ...) \
static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
_method_id)[] = { __VA_ARGS__ }; \
static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
.id = _method_id, \
.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
}; \
ADD_UVERBS_METHODS(_name, _object_id, &UVERBS_METHOD(_method_id))
#endif
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