2 * Copyright (c) 2017, Mellanox Technologies inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <rdma/uverbs_std_types.h>
34 #include "rdma_core.h"
37 static int uverbs_free_cq(struct ib_uobject *uobject,
38 enum rdma_remove_reason why)
40 struct ib_cq *cq = uobject->object;
41 struct ib_uverbs_event_queue *ev_queue = cq->cq_context;
42 struct ib_ucq_object *ucq =
43 container_of(uobject, struct ib_ucq_object, uobject);
46 ret = ib_destroy_cq(cq);
47 if (ib_is_destroy_retryable(ret, why, uobject))
50 ib_uverbs_release_ucq(
51 uobject->context->ufile,
52 ev_queue ? container_of(ev_queue,
53 struct ib_uverbs_completion_event_file,
60 static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(
61 struct uverbs_attr_bundle *attrs)
63 struct ib_ucq_object *obj = container_of(
64 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE),
65 typeof(*obj), uobject);
66 struct ib_device *ib_dev = obj->uobject.context->device;
69 struct ib_cq_init_attr attr = {};
71 struct ib_uverbs_completion_event_file *ev_file = NULL;
72 struct ib_uobject *ev_file_uobj;
74 if (!ib_dev->ops.create_cq || !ib_dev->ops.destroy_cq)
77 ret = uverbs_copy_from(&attr.comp_vector, attrs,
78 UVERBS_ATTR_CREATE_CQ_COMP_VECTOR);
80 ret = uverbs_copy_from(&attr.cqe, attrs,
81 UVERBS_ATTR_CREATE_CQ_CQE);
83 ret = uverbs_copy_from(&user_handle, attrs,
84 UVERBS_ATTR_CREATE_CQ_USER_HANDLE);
88 ret = uverbs_get_flags32(&attr.flags, attrs,
89 UVERBS_ATTR_CREATE_CQ_FLAGS,
90 IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION |
91 IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN);
95 ev_file_uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
96 if (!IS_ERR(ev_file_uobj)) {
97 ev_file = container_of(ev_file_uobj,
98 struct ib_uverbs_completion_event_file,
100 uverbs_uobject_get(ev_file_uobj);
103 if (attr.comp_vector >= attrs->ufile->device->num_comp_vectors) {
108 obj->comp_events_reported = 0;
109 obj->async_events_reported = 0;
110 INIT_LIST_HEAD(&obj->comp_list);
111 INIT_LIST_HEAD(&obj->async_list);
113 cq = ib_dev->ops.create_cq(ib_dev, &attr, obj->uobject.context,
114 &attrs->driver_udata);
121 cq->uobject = &obj->uobject;
122 cq->comp_handler = ib_uverbs_comp_handler;
123 cq->event_handler = ib_uverbs_cq_event_handler;
124 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
125 obj->uobject.object = cq;
126 obj->uobject.user_handle = user_handle;
127 atomic_set(&cq->usecnt, 0);
128 cq->res.type = RDMA_RESTRACK_CQ;
129 rdma_restrack_uadd(&cq->res);
131 ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,
142 uverbs_uobject_put(ev_file_uobj);
146 DECLARE_UVERBS_NAMED_METHOD(
147 UVERBS_METHOD_CQ_CREATE,
148 UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE,
152 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE,
153 UVERBS_ATTR_TYPE(u32),
155 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE,
156 UVERBS_ATTR_TYPE(u64),
158 UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL,
159 UVERBS_OBJECT_COMP_CHANNEL,
162 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR,
163 UVERBS_ATTR_TYPE(u32),
165 UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_CQ_FLAGS,
166 enum ib_uverbs_ex_create_cq_flags),
167 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE,
168 UVERBS_ATTR_TYPE(u32),
172 static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(
173 struct uverbs_attr_bundle *attrs)
175 struct ib_uobject *uobj =
176 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE);
177 struct ib_ucq_object *obj =
178 container_of(uobj, struct ib_ucq_object, uobject);
179 struct ib_uverbs_destroy_cq_resp resp = {
180 .comp_events_reported = obj->comp_events_reported,
181 .async_events_reported = obj->async_events_reported
184 return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp,
188 DECLARE_UVERBS_NAMED_METHOD(
189 UVERBS_METHOD_CQ_DESTROY,
190 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE,
192 UVERBS_ACCESS_DESTROY,
194 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP,
195 UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp),
198 DECLARE_UVERBS_NAMED_OBJECT(
200 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), uverbs_free_cq),
202 #if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI)
203 &UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE),
204 &UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY)
208 const struct uapi_definition uverbs_def_obj_cq[] = {
209 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_CQ,
210 UAPI_DEF_OBJ_NEEDS_FN(destroy_cq)),