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33#include <rdma/uverbs_std_types.h>
34#include <rdma/ib_user_verbs.h>
35#include <rdma/ib_verbs.h>
36#include <linux/bug.h>
37#include <linux/file.h>
38#include <rdma/restrack.h>
39#include "rdma_core.h"
40#include "uverbs.h"
41
42static int uverbs_free_ah(struct ib_uobject *uobject,
43 enum rdma_remove_reason why,
44 struct uverbs_attr_bundle *attrs)
45{
46 return rdma_destroy_ah_user((struct ib_ah *)uobject->object,
47 RDMA_DESTROY_AH_SLEEPABLE,
48 &attrs->driver_udata);
49}
50
51static int uverbs_free_flow(struct ib_uobject *uobject,
52 enum rdma_remove_reason why,
53 struct uverbs_attr_bundle *attrs)
54{
55 struct ib_flow *flow = (struct ib_flow *)uobject->object;
56 struct ib_uflow_object *uflow =
57 container_of(uobject, struct ib_uflow_object, uobject);
58 struct ib_qp *qp = flow->qp;
59 int ret;
60
61 ret = flow->device->ops.destroy_flow(flow);
62 if (!ret) {
63 if (qp)
64 atomic_dec(&qp->usecnt);
65 ib_uverbs_flow_resources_free(uflow->resources);
66 }
67
68 return ret;
69}
70
71static int uverbs_free_mw(struct ib_uobject *uobject,
72 enum rdma_remove_reason why,
73 struct uverbs_attr_bundle *attrs)
74{
75 return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
76}
77
78static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
79 enum rdma_remove_reason why,
80 struct uverbs_attr_bundle *attrs)
81{
82 struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object;
83 struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
84 u32 table_size = (1 << rwq_ind_tbl->log_ind_tbl_size);
85 int ret, i;
86
87 if (atomic_read(&rwq_ind_tbl->usecnt))
88 return -EBUSY;
89
90 ret = rwq_ind_tbl->device->ops.destroy_rwq_ind_table(rwq_ind_tbl);
91 if (ret)
92 return ret;
93
94 for (i = 0; i < table_size; i++)
95 atomic_dec(&ind_tbl[i]->usecnt);
96
97 kfree(rwq_ind_tbl);
98 kfree(ind_tbl);
99 return 0;
100}
101
102static int uverbs_free_xrcd(struct ib_uobject *uobject,
103 enum rdma_remove_reason why,
104 struct uverbs_attr_bundle *attrs)
105{
106 struct ib_xrcd *xrcd = uobject->object;
107 struct ib_uxrcd_object *uxrcd =
108 container_of(uobject, struct ib_uxrcd_object, uobject);
109 int ret;
110
111 if (atomic_read(&uxrcd->refcnt))
112 return -EBUSY;
113
114 mutex_lock(&attrs->ufile->device->xrcd_tree_mutex);
115 ret = ib_uverbs_dealloc_xrcd(uobject, xrcd, why, attrs);
116 mutex_unlock(&attrs->ufile->device->xrcd_tree_mutex);
117
118 return ret;
119}
120
121static int uverbs_free_pd(struct ib_uobject *uobject,
122 enum rdma_remove_reason why,
123 struct uverbs_attr_bundle *attrs)
124{
125 struct ib_pd *pd = uobject->object;
126
127 if (atomic_read(&pd->usecnt))
128 return -EBUSY;
129
130 return ib_dealloc_pd_user(pd, &attrs->driver_udata);
131}
132
133void ib_uverbs_free_event_queue(struct ib_uverbs_event_queue *event_queue)
134{
135 struct ib_uverbs_event *entry, *tmp;
136
137 spin_lock_irq(&event_queue->lock);
138
139
140
141
142 event_queue->is_closed = 1;
143 spin_unlock_irq(&event_queue->lock);
144 wake_up_interruptible(&event_queue->poll_wait);
145 kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN);
146
147 spin_lock_irq(&event_queue->lock);
148 list_for_each_entry_safe(entry, tmp, &event_queue->event_list, list) {
149 if (entry->counter)
150 list_del(&entry->obj_list);
151 list_del(&entry->list);
152 kfree(entry);
153 }
154 spin_unlock_irq(&event_queue->lock);
155}
156
157static void
158uverbs_completion_event_file_destroy_uobj(struct ib_uobject *uobj,
159 enum rdma_remove_reason why)
160{
161 struct ib_uverbs_completion_event_file *file =
162 container_of(uobj, struct ib_uverbs_completion_event_file,
163 uobj);
164
165 ib_uverbs_free_event_queue(&file->ev_queue);
166}
167
168int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs)
169{
170 return 0;
171}
172EXPORT_SYMBOL(uverbs_destroy_def_handler);
173
174DECLARE_UVERBS_NAMED_OBJECT(
175 UVERBS_OBJECT_COMP_CHANNEL,
176 UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file),
177 uverbs_completion_event_file_destroy_uobj,
178 &uverbs_event_fops,
179 "[infinibandevent]",
180 O_RDONLY));
181
182DECLARE_UVERBS_NAMED_METHOD_DESTROY(
183 UVERBS_METHOD_MW_DESTROY,
184 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MW_HANDLE,
185 UVERBS_OBJECT_MW,
186 UVERBS_ACCESS_DESTROY,
187 UA_MANDATORY));
188
189DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MW,
190 UVERBS_TYPE_ALLOC_IDR(uverbs_free_mw),
191 &UVERBS_METHOD(UVERBS_METHOD_MW_DESTROY));
192
193DECLARE_UVERBS_NAMED_METHOD_DESTROY(
194 UVERBS_METHOD_AH_DESTROY,
195 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_AH_HANDLE,
196 UVERBS_OBJECT_AH,
197 UVERBS_ACCESS_DESTROY,
198 UA_MANDATORY));
199
200DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_AH,
201 UVERBS_TYPE_ALLOC_IDR(uverbs_free_ah),
202 &UVERBS_METHOD(UVERBS_METHOD_AH_DESTROY));
203
204DECLARE_UVERBS_NAMED_METHOD_DESTROY(
205 UVERBS_METHOD_FLOW_DESTROY,
206 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_FLOW_HANDLE,
207 UVERBS_OBJECT_FLOW,
208 UVERBS_ACCESS_DESTROY,
209 UA_MANDATORY));
210
211DECLARE_UVERBS_NAMED_OBJECT(
212 UVERBS_OBJECT_FLOW,
213 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uflow_object),
214 uverbs_free_flow),
215 &UVERBS_METHOD(UVERBS_METHOD_FLOW_DESTROY));
216
217DECLARE_UVERBS_NAMED_METHOD_DESTROY(
218 UVERBS_METHOD_RWQ_IND_TBL_DESTROY,
219 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_RWQ_IND_TBL_HANDLE,
220 UVERBS_OBJECT_RWQ_IND_TBL,
221 UVERBS_ACCESS_DESTROY,
222 UA_MANDATORY));
223
224DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_RWQ_IND_TBL,
225 UVERBS_TYPE_ALLOC_IDR(uverbs_free_rwq_ind_tbl),
226 &UVERBS_METHOD(UVERBS_METHOD_RWQ_IND_TBL_DESTROY));
227
228DECLARE_UVERBS_NAMED_METHOD_DESTROY(
229 UVERBS_METHOD_XRCD_DESTROY,
230 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_XRCD_HANDLE,
231 UVERBS_OBJECT_XRCD,
232 UVERBS_ACCESS_DESTROY,
233 UA_MANDATORY));
234
235DECLARE_UVERBS_NAMED_OBJECT(
236 UVERBS_OBJECT_XRCD,
237 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object),
238 uverbs_free_xrcd),
239 &UVERBS_METHOD(UVERBS_METHOD_XRCD_DESTROY));
240
241DECLARE_UVERBS_NAMED_METHOD_DESTROY(
242 UVERBS_METHOD_PD_DESTROY,
243 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_PD_HANDLE,
244 UVERBS_OBJECT_PD,
245 UVERBS_ACCESS_DESTROY,
246 UA_MANDATORY));
247
248DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_PD,
249 UVERBS_TYPE_ALLOC_IDR(uverbs_free_pd),
250 &UVERBS_METHOD(UVERBS_METHOD_PD_DESTROY));
251
252const struct uapi_definition uverbs_def_obj_intf[] = {
253 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_PD,
254 UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
255 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_COMP_CHANNEL,
256 UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
257 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_AH,
258 UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
259 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MW,
260 UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)),
261 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW,
262 UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)),
263 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
264 UVERBS_OBJECT_RWQ_IND_TBL,
265 UAPI_DEF_OBJ_NEEDS_FN(destroy_rwq_ind_table)),
266 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_XRCD,
267 UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
268 {}
269};
270
