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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.
- */
- #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 (ib_is_destroy_retryable(ret, why, uobject))
- return ret;
- for (i = 0; i < table_size; i++)
- atomic_dec(&ind_tbl[i]->usecnt);
- kfree(rwq_ind_tbl);
- kfree(ind_tbl);
- return ret;
- }
- 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;
- ret = ib_destroy_usecnt(&uxrcd->refcnt, why, uobject);
- if (ret)
- return ret;
- 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;
- int ret;
- ret = ib_destroy_usecnt(&pd->usecnt, why, uobject);
- if (ret)
- return ret;
- 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 int
- 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);
- return 0;
- }
- 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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