uverbs_std_types.h
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/*
* Copyright (c) 2017, 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_STD_TYPES__
#define _UVERBS_STD_TYPES__
#include <rdma/uverbs_types.h>
#include <rdma/uverbs_ioctl.h>
#include <rdma/ib_user_ioctl_verbs.h>
#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
const struct uverbs_object_tree_def *uverbs_default_get_objects(void);
#else
static inline const struct uverbs_object_tree_def *uverbs_default_get_objects(void)
{
return NULL;
}
#endif
/* Returns _id, or causes a compile error if _id is not a u32.
*
* The uobj APIs should only be used with the write based uAPI to access
* object IDs. The write API must use a u32 for the object handle, which is
* checked by this macro.
*/
#define _uobj_check_id(_id) ((_id) * typecheck(u32, _id))
#define uobj_get_type(_ufile, _object) \
uapi_get_object((_ufile)->device->uapi, _object)
#define uobj_get_read(_type, _id, _ufile) \
rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
_uobj_check_id(_id), UVERBS_LOOKUP_READ)
#define ufd_get_read(_type, _fdnum, _ufile) \
rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
(_fdnum)*typecheck(s32, _fdnum), \
UVERBS_LOOKUP_READ)
static inline void *_uobj_get_obj_read(struct ib_uobject *uobj)
{
if (IS_ERR(uobj))
return NULL;
return uobj->object;
}
#define uobj_get_obj_read(_object, _type, _id, _ufile) \
((struct ib_##_object *)_uobj_get_obj_read( \
uobj_get_read(_type, _id, _ufile)))
#define uobj_get_write(_type, _id, _ufile) \
rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
_uobj_check_id(_id), UVERBS_LOOKUP_WRITE)
int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
struct ib_uverbs_file *ufile, int success_res);
#define uobj_perform_destroy(_type, _id, _ufile, _success_res) \
__uobj_perform_destroy(uobj_get_type(_ufile, _type), \
_uobj_check_id(_id), _ufile, _success_res)
struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj,
u32 id, struct ib_uverbs_file *ufile);
#define uobj_get_destroy(_type, _id, _ufile) \
__uobj_get_destroy(uobj_get_type(_ufile, _type), _uobj_check_id(_id), \
_ufile)
static inline void uobj_put_destroy(struct ib_uobject *uobj)
{
rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
}
static inline void uobj_put_read(struct ib_uobject *uobj)
{
rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_READ);
}
#define uobj_put_obj_read(_obj) \
uobj_put_read((_obj)->uobject)
static inline void uobj_put_write(struct ib_uobject *uobj)
{
rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
}
static inline int __must_check uobj_alloc_commit(struct ib_uobject *uobj,
int success_res)
{
int ret = rdma_alloc_commit_uobject(uobj);
if (ret)
return ret;
return success_res;
}
static inline void uobj_alloc_abort(struct ib_uobject *uobj)
{
rdma_alloc_abort_uobject(uobj);
}
static inline struct ib_uobject *
__uobj_alloc(const struct uverbs_api_object *obj, struct ib_uverbs_file *ufile,
struct ib_device **ib_dev)
{
struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, ufile);
if (!IS_ERR(uobj))
*ib_dev = uobj->context->device;
return uobj;
}
#define uobj_alloc(_type, _ufile, _ib_dev) \
__uobj_alloc(uobj_get_type(_ufile, _type), _ufile, _ib_dev)
#endif