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 ib_uverbs_file *file, 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;
70 struct ib_cq_init_attr attr = {};
72 struct ib_uverbs_completion_event_file *ev_file = NULL;
73 struct ib_uobject *ev_file_uobj;
75 if (!ib_dev->create_cq || !ib_dev->destroy_cq)
78 ret = uverbs_copy_from(&attr.comp_vector, attrs,
79 UVERBS_ATTR_CREATE_CQ_COMP_VECTOR);
81 ret = uverbs_copy_from(&attr.cqe, attrs,
82 UVERBS_ATTR_CREATE_CQ_CQE);
84 ret = uverbs_copy_from(&user_handle, attrs,
85 UVERBS_ATTR_CREATE_CQ_USER_HANDLE);
89 ret = uverbs_get_flags32(&attr.flags, attrs,
90 UVERBS_ATTR_CREATE_CQ_FLAGS,
91 IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION |
92 IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN);
96 ev_file_uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
97 if (!IS_ERR(ev_file_uobj)) {
98 ev_file = container_of(ev_file_uobj,
99 struct ib_uverbs_completion_event_file,
101 uverbs_uobject_get(ev_file_uobj);
104 if (attr.comp_vector >= file->device->num_comp_vectors) {
109 obj->comp_events_reported = 0;
110 obj->async_events_reported = 0;
111 INIT_LIST_HEAD(&obj->comp_list);
112 INIT_LIST_HEAD(&obj->async_list);
114 /* Temporary, only until drivers get the new uverbs_attr_bundle */
115 create_udata(attrs, &uhw);
117 cq = ib_dev->create_cq(ib_dev, &attr, obj->uobject.context, &uhw);
124 cq->uobject = &obj->uobject;
125 cq->comp_handler = ib_uverbs_comp_handler;
126 cq->event_handler = ib_uverbs_cq_event_handler;
127 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
128 obj->uobject.object = cq;
129 obj->uobject.user_handle = user_handle;
130 atomic_set(&cq->usecnt, 0);
131 cq->res.type = RDMA_RESTRACK_CQ;
132 rdma_restrack_add(&cq->res);
134 ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,
145 uverbs_uobject_put(ev_file_uobj);
149 DECLARE_UVERBS_NAMED_METHOD(
150 UVERBS_METHOD_CQ_CREATE,
151 UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE,
155 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE,
156 UVERBS_ATTR_TYPE(u32),
158 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE,
159 UVERBS_ATTR_TYPE(u64),
161 UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL,
162 UVERBS_OBJECT_COMP_CHANNEL,
165 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR,
166 UVERBS_ATTR_TYPE(u32),
168 UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_CQ_FLAGS,
169 enum ib_uverbs_ex_create_cq_flags),
170 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE,
171 UVERBS_ATTR_TYPE(u32),
175 static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(
176 struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
178 struct ib_uobject *uobj =
179 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE);
180 struct ib_ucq_object *obj =
181 container_of(uobj, struct ib_ucq_object, uobject);
182 struct ib_uverbs_destroy_cq_resp resp = {
183 .comp_events_reported = obj->comp_events_reported,
184 .async_events_reported = obj->async_events_reported
187 return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp,
191 DECLARE_UVERBS_NAMED_METHOD(
192 UVERBS_METHOD_CQ_DESTROY,
193 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE,
195 UVERBS_ACCESS_DESTROY,
197 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP,
198 UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp),
201 DECLARE_UVERBS_NAMED_OBJECT(
203 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), uverbs_free_cq),
205 #if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI)
206 &UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE),
207 &UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY)