/*
* 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.
*/
#include <rdma/uverbs_std_types.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_verbs.h>
#include <linux/bug.h>
#include <linux/file.h>
#include <rdma/restrack.h>
#include "rdma_core.h"
#include "uverbs.h"
static int uverbs_free_ah(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
return rdma_destroy_ah_user((struct ib_ah *)uobject->object,
RDMA_DESTROY_AH_SLEEPABLE,
&attrs->driver_udata);
}
static int uverbs_free_flow(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct ib_flow *flow = (struct ib_flow *)uobject->object;
struct ib_uflow_object *uflow =
container_of(uobject, struct ib_uflow_object, uobject);
struct ib_qp *qp = flow->qp;
int ret;
ret = flow->device->ops.destroy_flow(flow);
if (!ret) {
if (qp)
atomic_dec(&qp->usecnt);
ib_uverbs_flow_resources_free(uflow->resources);
}
return ret;
}
static int uverbs_free_mw(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
}
static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object;
struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
u32 table_size = (1 << rwq_ind_tbl->log_ind_tbl_size);
int ret, i;
if (atomic_read(&rwq_ind_tbl->usecnt))
return -EBUSY;
ret = rwq_ind_tbl->device->ops.destroy_rwq_ind_table(rwq_ind_tbl);
if (ret)
return ret;
for (i = 0; i < table_size; i++)
atomic_dec(&ind_tbl[i]->usecnt);
kfree(rwq_ind_tbl);
kfree(ind_tbl);
return 0;
}
static int uverbs_free_xrcd(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct ib_xrcd *xrcd = uobject->object;
struct ib_uxrcd_object *uxrcd =
container_of(uobject, struct ib_uxrcd_object, uobject);
int ret;
if (atomic_read(&uxrcd->refcnt))
return -EBUSY;
mutex_lock(&attrs->ufile->device->xrcd_tree_mutex);
ret = ib_uverbs_dealloc_xrcd(uobject, xrcd, why, attrs);
mutex_unlock(&attrs->ufile->device->xrcd_tree_mutex);
return ret;
}
static int uverbs_free_pd(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct ib_pd *pd = uobject->object;
if (atomic_read(&pd->usecnt))
return -EBUSY;
return ib_dealloc_pd_user(pd, &attrs->driver_udata);
}
void ib_uverbs_free_event_queue(struct ib_uverbs_event_queue *event_queue)
{
struct ib_uverbs_event *entry, *tmp;
spin_lock_irq(&event_queue->lock);
/*
* The user must ensure that no new items are added to the event_list
* once is_closed is set.
*/
event_queue->is_closed = 1;
spin_unlock_irq(&event_queue->lock);
wake_up_interruptible(&event_queue->poll_wait);
kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN);
spin_lock_irq(&event_queue->lock);
list_for_each_entry_safe(entry, tmp, &event_queue->event_list, list) {
if (entry->counter)
list_del(&entry->obj_list);
list_del(&entry->list);
kfree(entry);
}
spin_unlock_irq(&event_queue->lock);
}
static void
uverbs_completion_event_file_destroy_uobj(struct ib_uobject *uobj,
enum rdma_remove_reason why)
{
struct ib_uverbs_completion_event_file *file =
container_of(uobj, struct ib_uverbs_completion_event_file,
uobj);
ib_uverbs_free_event_queue(&file->ev_queue);
}
int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs)
{
return 0;
}
EXPORT_SYMBOL(uverbs_destroy_def_handler);
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_COMP_CHANNEL,
UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file),
uverbs_completion_event_file_destroy_uobj,
&uverbs_event_fops,
"[infinibandevent]",
O_RDONLY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_MW_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MW_HANDLE,
UVERBS_OBJECT_MW,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MW,
UVERBS_TYPE_ALLOC_IDR(uverbs_free_mw),
&UVERBS_METHOD(UVERBS_METHOD_MW_DESTROY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_AH_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_AH_HANDLE,
UVERBS_OBJECT_AH,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_AH,
UVERBS_TYPE_ALLOC_IDR(uverbs_free_ah),
&UVERBS_METHOD(UVERBS_METHOD_AH_DESTROY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_FLOW_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_FLOW_HANDLE,
UVERBS_OBJECT_FLOW,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_FLOW,
UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uflow_object),
uverbs_free_flow),
&UVERBS_METHOD(UVERBS_METHOD_FLOW_DESTROY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_RWQ_IND_TBL_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_RWQ_IND_TBL_HANDLE,
UVERBS_OBJECT_RWQ_IND_TBL,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_RWQ_IND_TBL,
UVERBS_TYPE_ALLOC_IDR(uverbs_free_rwq_ind_tbl),
&UVERBS_METHOD(UVERBS_METHOD_RWQ_IND_TBL_DESTROY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_XRCD_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_XRCD_HANDLE,
UVERBS_OBJECT_XRCD,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_XRCD,
UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object),
uverbs_free_xrcd),
&UVERBS_METHOD(UVERBS_METHOD_XRCD_DESTROY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_PD_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_PD,
UVERBS_TYPE_ALLOC_IDR(uverbs_free_pd),
&UVERBS_METHOD(UVERBS_METHOD_PD_DESTROY));
const struct uapi_definition uverbs_def_obj_intf[] = {
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_PD,
UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_COMP_CHANNEL,
UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_AH,
UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MW,
UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW,
UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
UVERBS_OBJECT_RWQ_IND_TBL,
UAPI_DEF_OBJ_NEEDS_FN(destroy_rwq_ind_table)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_XRCD,
UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
{}
};
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