This source file includes following definitions.
- uverbs_free_cq
- UVERBS_HANDLER
- UVERBS_HANDLER
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33 #include <rdma/uverbs_std_types.h>
34 #include "rdma_core.h"
35 #include "uverbs.h"
36
37 static int uverbs_free_cq(struct ib_uobject *uobject,
38 enum rdma_remove_reason why,
39 struct uverbs_attr_bundle *attrs)
40 {
41 struct ib_cq *cq = uobject->object;
42 struct ib_uverbs_event_queue *ev_queue = cq->cq_context;
43 struct ib_ucq_object *ucq =
44 container_of(uobject, struct ib_ucq_object, uobject);
45 int ret;
46
47 ret = ib_destroy_cq_user(cq, &attrs->driver_udata);
48 if (ib_is_destroy_retryable(ret, why, uobject))
49 return ret;
50
51 ib_uverbs_release_ucq(
52 attrs->ufile,
53 ev_queue ? container_of(ev_queue,
54 struct ib_uverbs_completion_event_file,
55 ev_queue) :
56 NULL,
57 ucq);
58 return ret;
59 }
60
61 static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(
62 struct uverbs_attr_bundle *attrs)
63 {
64 struct ib_ucq_object *obj = container_of(
65 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE),
66 typeof(*obj), uobject);
67 struct ib_device *ib_dev = attrs->context->device;
68 int ret;
69 u64 user_handle;
70 struct ib_cq_init_attr attr = {};
71 struct ib_cq *cq;
72 struct ib_uverbs_completion_event_file *ev_file = NULL;
73 struct ib_uobject *ev_file_uobj;
74
75 if (!ib_dev->ops.create_cq || !ib_dev->ops.destroy_cq)
76 return -EOPNOTSUPP;
77
78 ret = uverbs_copy_from(&attr.comp_vector, attrs,
79 UVERBS_ATTR_CREATE_CQ_COMP_VECTOR);
80 if (!ret)
81 ret = uverbs_copy_from(&attr.cqe, attrs,
82 UVERBS_ATTR_CREATE_CQ_CQE);
83 if (!ret)
84 ret = uverbs_copy_from(&user_handle, attrs,
85 UVERBS_ATTR_CREATE_CQ_USER_HANDLE);
86 if (ret)
87 return ret;
88
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);
93 if (ret)
94 return ret;
95
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,
100 uobj);
101 uverbs_uobject_get(ev_file_uobj);
102 }
103
104 if (attr.comp_vector >= attrs->ufile->device->num_comp_vectors) {
105 ret = -EINVAL;
106 goto err_event_file;
107 }
108
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);
113
114 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
115 if (!cq) {
116 ret = -ENOMEM;
117 goto err_event_file;
118 }
119
120 cq->device = ib_dev;
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 atomic_set(&cq->usecnt, 0);
126 cq->res.type = RDMA_RESTRACK_CQ;
127
128 ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
129 if (ret)
130 goto err_free;
131
132 obj->uobject.object = cq;
133 obj->uobject.user_handle = user_handle;
134 rdma_restrack_uadd(&cq->res);
135
136 ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,
137 sizeof(cq->cqe));
138 if (ret)
139 goto err_cq;
140
141 return 0;
142 err_cq:
143 ib_destroy_cq_user(cq, uverbs_get_cleared_udata(attrs));
144 cq = NULL;
145 err_free:
146 kfree(cq);
147 err_event_file:
148 if (ev_file)
149 uverbs_uobject_put(ev_file_uobj);
150 return ret;
151 };
152
153 DECLARE_UVERBS_NAMED_METHOD(
154 UVERBS_METHOD_CQ_CREATE,
155 UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE,
156 UVERBS_OBJECT_CQ,
157 UVERBS_ACCESS_NEW,
158 UA_MANDATORY),
159 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE,
160 UVERBS_ATTR_TYPE(u32),
161 UA_MANDATORY),
162 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE,
163 UVERBS_ATTR_TYPE(u64),
164 UA_MANDATORY),
165 UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL,
166 UVERBS_OBJECT_COMP_CHANNEL,
167 UVERBS_ACCESS_READ,
168 UA_OPTIONAL),
169 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR,
170 UVERBS_ATTR_TYPE(u32),
171 UA_MANDATORY),
172 UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_CQ_FLAGS,
173 enum ib_uverbs_ex_create_cq_flags),
174 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE,
175 UVERBS_ATTR_TYPE(u32),
176 UA_MANDATORY),
177 UVERBS_ATTR_UHW());
178
179 static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(
180 struct uverbs_attr_bundle *attrs)
181 {
182 struct ib_uobject *uobj =
183 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE);
184 struct ib_ucq_object *obj =
185 container_of(uobj, struct ib_ucq_object, uobject);
186 struct ib_uverbs_destroy_cq_resp resp = {
187 .comp_events_reported = obj->comp_events_reported,
188 .async_events_reported = obj->async_events_reported
189 };
190
191 return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp,
192 sizeof(resp));
193 }
194
195 DECLARE_UVERBS_NAMED_METHOD(
196 UVERBS_METHOD_CQ_DESTROY,
197 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE,
198 UVERBS_OBJECT_CQ,
199 UVERBS_ACCESS_DESTROY,
200 UA_MANDATORY),
201 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP,
202 UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp),
203 UA_MANDATORY));
204
205 DECLARE_UVERBS_NAMED_OBJECT(
206 UVERBS_OBJECT_CQ,
207 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), uverbs_free_cq),
208
209 #if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI)
210 &UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE),
211 &UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY)
212 #endif
213 );
214
215 const struct uapi_definition uverbs_def_obj_cq[] = {
216 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_CQ,
217 UAPI_DEF_OBJ_NEEDS_FN(destroy_cq)),
218 {}
219 };