148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#include "uverbs.h"
|
|
#include <rdma/uverbs_std_types.h>
|
|
|
|
static int uverbs_free_mr(struct ib_uobject *uobject,
|
|
enum rdma_remove_reason why)
|
|
{
|
|
return ib_dereg_mr((struct ib_mr *)uobject->object);
|
|
}
|
|
|
|
static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(struct ib_device *ib_dev,
|
|
struct ib_uverbs_file *file,
|
|
struct uverbs_attr_bundle *attrs)
|
|
{
|
|
struct ib_dm_mr_attr attr = {};
|
|
struct ib_uobject *uobj;
|
|
struct ib_dm *dm;
|
|
struct ib_pd *pd;
|
|
struct ib_mr *mr;
|
|
int ret;
|
|
|
|
if (!ib_dev->reg_dm_mr)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = uverbs_copy_from(&attr.offset, attrs, UVERBS_ATTR_REG_DM_MR_OFFSET);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = uverbs_copy_from(&attr.length, attrs,
|
|
UVERBS_ATTR_REG_DM_MR_LENGTH);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = uverbs_copy_from(&attr.access_flags, attrs,
|
|
UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!(attr.access_flags & IB_ZERO_BASED))
|
|
return -EINVAL;
|
|
|
|
ret = ib_check_mr_access(attr.access_flags);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pd = uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_PD_HANDLE);
|
|
|
|
dm = uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_DM_HANDLE);
|
|
|
|
uobj = uverbs_attr_get(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE)->obj_attr.uobject;
|
|
|
|
if (attr.offset > dm->length || attr.length > dm->length ||
|
|
attr.length > dm->length - attr.offset)
|
|
return -EINVAL;
|
|
|
|
mr = pd->device->reg_dm_mr(pd, dm, &attr, attrs);
|
|
if (IS_ERR(mr))
|
|
return PTR_ERR(mr);
|
|
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->dm = dm;
|
|
mr->uobject = uobj;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_inc(&dm->usecnt);
|
|
|
|
uobj->object = mr;
|
|
|
|
ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_LKEY, &mr->lkey,
|
|
sizeof(mr->lkey));
|
|
if (ret)
|
|
goto err_dereg;
|
|
|
|
ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
|
|
&mr->rkey, sizeof(mr->rkey));
|
|
if (ret)
|
|
goto err_dereg;
|
|
|
|
return 0;
|
|
|
|
err_dereg:
|
|
ib_dereg_mr(mr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_DM_MR_REG,
|
|
&UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_HANDLE, UVERBS_OBJECT_MR,
|
|
UVERBS_ACCESS_NEW,
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_OFFSET,
|
|
UVERBS_ATTR_TYPE(u64),
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_LENGTH,
|
|
UVERBS_ATTR_TYPE(u64),
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_PD_HANDLE, UVERBS_OBJECT_PD,
|
|
UVERBS_ACCESS_READ,
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
|
|
UVERBS_ATTR_TYPE(u32),
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_DM_HANDLE, UVERBS_OBJECT_DM,
|
|
UVERBS_ACCESS_READ,
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_LKEY,
|
|
UVERBS_ATTR_TYPE(u32),
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
|
|
&UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
|
|
UVERBS_ATTR_TYPE(u32),
|
|
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
|
|
|
|
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MR,
|
|
/* 1 is used in order to free the MR after all the MWs */
|
|
&UVERBS_TYPE_ALLOC_IDR(1, uverbs_free_mr),
|
|
&UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG));
|