213 lines
6.4 KiB
C
213 lines
6.4 KiB
C
/*
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* Copyright (c) 2017, Mellanox Technologies inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/uverbs_std_types.h>
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#include "rdma_core.h"
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#include "uverbs.h"
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static int uverbs_free_cq(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_cq *cq = uobject->object;
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struct ib_uverbs_event_queue *ev_queue = cq->cq_context;
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struct ib_ucq_object *ucq =
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container_of(uobject, struct ib_ucq_object, uobject);
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int ret;
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ret = ib_destroy_cq(cq);
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if (ib_is_destroy_retryable(ret, why, uobject))
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return ret;
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ib_uverbs_release_ucq(
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uobject->context->ufile,
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ev_queue ? container_of(ev_queue,
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struct ib_uverbs_completion_event_file,
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ev_queue) :
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NULL,
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ucq);
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return ret;
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}
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static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_ucq_object *obj = container_of(
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uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE),
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typeof(*obj), uobject);
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struct ib_device *ib_dev = obj->uobject.context->device;
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int ret;
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u64 user_handle;
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struct ib_cq_init_attr attr = {};
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struct ib_cq *cq;
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struct ib_uverbs_completion_event_file *ev_file = NULL;
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struct ib_uobject *ev_file_uobj;
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if (!ib_dev->ops.create_cq || !ib_dev->ops.destroy_cq)
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return -EOPNOTSUPP;
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ret = uverbs_copy_from(&attr.comp_vector, attrs,
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UVERBS_ATTR_CREATE_CQ_COMP_VECTOR);
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if (!ret)
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ret = uverbs_copy_from(&attr.cqe, attrs,
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UVERBS_ATTR_CREATE_CQ_CQE);
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if (!ret)
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ret = uverbs_copy_from(&user_handle, attrs,
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UVERBS_ATTR_CREATE_CQ_USER_HANDLE);
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if (ret)
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return ret;
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ret = uverbs_get_flags32(&attr.flags, attrs,
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UVERBS_ATTR_CREATE_CQ_FLAGS,
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IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION |
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IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN);
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if (ret)
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return ret;
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ev_file_uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
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if (!IS_ERR(ev_file_uobj)) {
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ev_file = container_of(ev_file_uobj,
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struct ib_uverbs_completion_event_file,
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uobj);
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uverbs_uobject_get(ev_file_uobj);
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}
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if (attr.comp_vector >= attrs->ufile->device->num_comp_vectors) {
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ret = -EINVAL;
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goto err_event_file;
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}
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obj->comp_events_reported = 0;
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obj->async_events_reported = 0;
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INIT_LIST_HEAD(&obj->comp_list);
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INIT_LIST_HEAD(&obj->async_list);
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cq = ib_dev->ops.create_cq(ib_dev, &attr, obj->uobject.context,
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&attrs->driver_udata);
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if (IS_ERR(cq)) {
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ret = PTR_ERR(cq);
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goto err_event_file;
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}
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cq->device = ib_dev;
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cq->uobject = &obj->uobject;
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cq->comp_handler = ib_uverbs_comp_handler;
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cq->event_handler = ib_uverbs_cq_event_handler;
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cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
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obj->uobject.object = cq;
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obj->uobject.user_handle = user_handle;
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atomic_set(&cq->usecnt, 0);
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cq->res.type = RDMA_RESTRACK_CQ;
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rdma_restrack_uadd(&cq->res);
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ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,
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sizeof(cq->cqe));
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if (ret)
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goto err_cq;
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return 0;
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err_cq:
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ib_destroy_cq(cq);
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err_event_file:
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if (ev_file)
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uverbs_uobject_put(ev_file_uobj);
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return ret;
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};
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DECLARE_UVERBS_NAMED_METHOD(
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UVERBS_METHOD_CQ_CREATE,
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UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE,
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UVERBS_OBJECT_CQ,
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UVERBS_ACCESS_NEW,
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE,
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UVERBS_ATTR_TYPE(u64),
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UA_MANDATORY),
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UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL,
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UVERBS_OBJECT_COMP_CHANNEL,
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UVERBS_ACCESS_READ,
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UA_OPTIONAL),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_CQ_FLAGS,
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enum ib_uverbs_ex_create_cq_flags),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_UHW());
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static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_uobject *uobj =
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uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE);
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struct ib_ucq_object *obj =
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container_of(uobj, struct ib_ucq_object, uobject);
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struct ib_uverbs_destroy_cq_resp resp = {
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.comp_events_reported = obj->comp_events_reported,
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.async_events_reported = obj->async_events_reported
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};
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return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp,
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sizeof(resp));
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}
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DECLARE_UVERBS_NAMED_METHOD(
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UVERBS_METHOD_CQ_DESTROY,
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UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE,
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UVERBS_OBJECT_CQ,
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UVERBS_ACCESS_DESTROY,
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UA_MANDATORY),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP,
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UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp),
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UA_MANDATORY));
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DECLARE_UVERBS_NAMED_OBJECT(
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UVERBS_OBJECT_CQ,
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UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), uverbs_free_cq),
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#if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI)
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&UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE),
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&UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY)
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#endif
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);
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const struct uapi_definition uverbs_def_obj_cq[] = {
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_CQ,
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UAPI_DEF_OBJ_NEEDS_FN(destroy_cq)),
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{}
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};
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