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/*
* 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 "rdma_core.h"
#include "uverbs.h"
#include <rdma/uverbs_std_types.h>
static int uverbs_free_mr(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
return ib_dereg_mr_user((struct ib_mr *)uobject->object,
&attrs->driver_udata);
}
static int UVERBS_HANDLER(UVERBS_METHOD_ADVISE_MR)(
struct uverbs_attr_bundle *attrs)
{
struct ib_pd *pd =
uverbs_attr_get_obj(attrs, UVERBS_ATTR_ADVISE_MR_PD_HANDLE);
enum ib_uverbs_advise_mr_advice advice;
struct ib_device *ib_dev = pd->device;
struct ib_sge *sg_list;
int num_sge;
u32 flags;
int ret;
/* FIXME: Extend the UAPI_DEF_OBJ_NEEDS_FN stuff.. */
if (!ib_dev->ops.advise_mr)
return -EOPNOTSUPP;
ret = uverbs_get_const(&advice, attrs, UVERBS_ATTR_ADVISE_MR_ADVICE);
if (ret)
return ret;
ret = uverbs_get_flags32(&flags, attrs, UVERBS_ATTR_ADVISE_MR_FLAGS,
IB_UVERBS_ADVISE_MR_FLAG_FLUSH);
if (ret)
return ret;
num_sge = uverbs_attr_ptr_get_array_size(
attrs, UVERBS_ATTR_ADVISE_MR_SGE_LIST, sizeof(struct ib_sge));
if (num_sge < 0)
return num_sge;
sg_list = uverbs_attr_get_alloced_ptr(attrs,
UVERBS_ATTR_ADVISE_MR_SGE_LIST);
return ib_dev->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
attrs);
}
static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(
struct uverbs_attr_bundle *attrs)
{
struct ib_dm_mr_attr attr = {};
struct ib_uobject *uobj =
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
struct ib_dm *dm =
uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_DM_HANDLE);
struct ib_pd *pd =
uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_PD_HANDLE);
struct ib_device *ib_dev = pd->device;
struct ib_mr *mr;
int ret;
if (!ib_dev->ops.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_get_flags32(&attr.access_flags, attrs,
UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
IB_ACCESS_SUPPORTED);
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;
if (attr.offset > dm->length || attr.length > dm->length ||
attr.length > dm->length - attr.offset)
return -EINVAL;
mr = pd->device->ops.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_user(mr, &attrs->driver_udata);
return ret;
}
DECLARE_UVERBS_NAMED_METHOD(
UVERBS_METHOD_ADVISE_MR,
UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_CONST_IN(UVERBS_ATTR_ADVISE_MR_ADVICE,
enum ib_uverbs_advise_mr_advice,
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_ADVISE_MR_FLAGS,
enum ib_uverbs_advise_mr_flag,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ADVISE_MR_SGE_LIST,
UVERBS_ATTR_MIN_SIZE(sizeof(struct ib_uverbs_sge)),
UA_MANDATORY,
UA_ALLOC_AND_COPY));
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_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_OFFSET,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_LENGTH,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY),
UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
enum ib_access_flags),
UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_DM_HANDLE,
UVERBS_OBJECT_DM,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_LKEY,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_MR_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MR_HANDLE,
UVERBS_OBJECT_MR,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_MR,
UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr),
&UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG),
&UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY),
&UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR));
const struct uapi_definition uverbs_def_obj_mr[] = {
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR,
UAPI_DEF_OBJ_NEEDS_FN(dereg_mr)),
{}
};
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