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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* 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_counters(struct ib_uobject *uobject,
enum rdma_remove_reason why)
{
struct ib_counters *counters = uobject->object;
if (why == RDMA_REMOVE_DESTROY &&
atomic_read(&counters->usecnt))
return -EBUSY;
return counters->device->destroy_counters(counters);
}
static int UVERBS_HANDLER(UVERBS_METHOD_COUNTERS_CREATE)(struct ib_device *ib_dev,
struct ib_uverbs_file *file,
struct uverbs_attr_bundle *attrs)
{
struct ib_counters *counters;
struct ib_uobject *uobj;
int ret;
/*
* This check should be removed once the infrastructure
* have the ability to remove methods from parse tree once
* such condition is met.
*/
if (!ib_dev->create_counters)
return -EOPNOTSUPP;
uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_COUNTERS_HANDLE);
counters = ib_dev->create_counters(ib_dev, attrs);
if (IS_ERR(counters)) {
ret = PTR_ERR(counters);
goto err_create_counters;
}
counters->device = ib_dev;
counters->uobject = uobj;
uobj->object = counters;
atomic_set(&counters->usecnt, 0);
return 0;
err_create_counters:
return ret;
}
static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_COUNTERS_CREATE,
&UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_COUNTERS_HANDLE,
UVERBS_OBJECT_COUNTERS,
UVERBS_ACCESS_NEW,
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
static DECLARE_UVERBS_NAMED_METHOD_WITH_HANDLER(UVERBS_METHOD_COUNTERS_DESTROY,
uverbs_destroy_def_handler,
&UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_COUNTERS_HANDLE,
UVERBS_OBJECT_COUNTERS,
UVERBS_ACCESS_DESTROY,
UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_COUNTERS,
&UVERBS_TYPE_ALLOC_IDR(0, uverbs_free_counters),
&UVERBS_METHOD(UVERBS_METHOD_COUNTERS_CREATE),
&UVERBS_METHOD(UVERBS_METHOD_COUNTERS_DESTROY));
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