uverbs_std_types.c 8.1 KB

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  1. /*
  2. * Copyright (c) 2017, Mellanox Technologies inc. All rights reserved.
  3. *
  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:
  9. *
  10. * Redistribution and use in source and binary forms, with or
  11. * without modification, are permitted provided that the following
  12. * conditions are met:
  13. *
  14. * - Redistributions of source code must retain the above
  15. * copyright notice, this list of conditions and the following
  16. * disclaimer.
  17. *
  18. * - Redistributions in binary form must reproduce the above
  19. * copyright notice, this list of conditions and the following
  20. * disclaimer in the documentation and/or other materials
  21. * provided with the distribution.
  22. *
  23. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30. * SOFTWARE.
  31. */
  32. #include <rdma/uverbs_std_types.h>
  33. #include <rdma/ib_user_verbs.h>
  34. #include <rdma/ib_verbs.h>
  35. #include <linux/bug.h>
  36. #include <linux/file.h>
  37. #include <rdma/restrack.h>
  38. #include "rdma_core.h"
  39. #include "uverbs.h"
  40. static int uverbs_free_ah(struct ib_uobject *uobject,
  41. enum rdma_remove_reason why,
  42. struct uverbs_attr_bundle *attrs)
  43. {
  44. return rdma_destroy_ah_user((struct ib_ah *)uobject->object,
  45. RDMA_DESTROY_AH_SLEEPABLE,
  46. &attrs->driver_udata);
  47. }
  48. static int uverbs_free_flow(struct ib_uobject *uobject,
  49. enum rdma_remove_reason why,
  50. struct uverbs_attr_bundle *attrs)
  51. {
  52. struct ib_flow *flow = (struct ib_flow *)uobject->object;
  53. struct ib_uflow_object *uflow =
  54. container_of(uobject, struct ib_uflow_object, uobject);
  55. struct ib_qp *qp = flow->qp;
  56. int ret;
  57. ret = flow->device->ops.destroy_flow(flow);
  58. if (!ret) {
  59. if (qp)
  60. atomic_dec(&qp->usecnt);
  61. ib_uverbs_flow_resources_free(uflow->resources);
  62. }
  63. return ret;
  64. }
  65. static int uverbs_free_mw(struct ib_uobject *uobject,
  66. enum rdma_remove_reason why,
  67. struct uverbs_attr_bundle *attrs)
  68. {
  69. return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
  70. }
  71. static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
  72. enum rdma_remove_reason why,
  73. struct uverbs_attr_bundle *attrs)
  74. {
  75. struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object;
  76. struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
  77. u32 table_size = (1 << rwq_ind_tbl->log_ind_tbl_size);
  78. int ret, i;
  79. if (atomic_read(&rwq_ind_tbl->usecnt))
  80. return -EBUSY;
  81. ret = rwq_ind_tbl->device->ops.destroy_rwq_ind_table(rwq_ind_tbl);
  82. if (ib_is_destroy_retryable(ret, why, uobject))
  83. return ret;
  84. for (i = 0; i < table_size; i++)
  85. atomic_dec(&ind_tbl[i]->usecnt);
  86. kfree(rwq_ind_tbl);
  87. kfree(ind_tbl);
  88. return ret;
  89. }
  90. static int uverbs_free_xrcd(struct ib_uobject *uobject,
  91. enum rdma_remove_reason why,
  92. struct uverbs_attr_bundle *attrs)
  93. {
  94. struct ib_xrcd *xrcd = uobject->object;
  95. struct ib_uxrcd_object *uxrcd =
  96. container_of(uobject, struct ib_uxrcd_object, uobject);
  97. int ret;
  98. ret = ib_destroy_usecnt(&uxrcd->refcnt, why, uobject);
  99. if (ret)
  100. return ret;
  101. mutex_lock(&attrs->ufile->device->xrcd_tree_mutex);
  102. ret = ib_uverbs_dealloc_xrcd(uobject, xrcd, why, attrs);
  103. mutex_unlock(&attrs->ufile->device->xrcd_tree_mutex);
  104. return ret;
  105. }
  106. static int uverbs_free_pd(struct ib_uobject *uobject,
  107. enum rdma_remove_reason why,
  108. struct uverbs_attr_bundle *attrs)
  109. {
  110. struct ib_pd *pd = uobject->object;
  111. int ret;
  112. ret = ib_destroy_usecnt(&pd->usecnt, why, uobject);
  113. if (ret)
  114. return ret;
  115. return ib_dealloc_pd_user(pd, &attrs->driver_udata);
  116. }
  117. void ib_uverbs_free_event_queue(struct ib_uverbs_event_queue *event_queue)
  118. {
  119. struct ib_uverbs_event *entry, *tmp;
  120. spin_lock_irq(&event_queue->lock);
  121. /*
  122. * The user must ensure that no new items are added to the event_list
  123. * once is_closed is set.
  124. */
  125. event_queue->is_closed = 1;
  126. spin_unlock_irq(&event_queue->lock);
  127. wake_up_interruptible(&event_queue->poll_wait);
  128. kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN);
  129. spin_lock_irq(&event_queue->lock);
  130. list_for_each_entry_safe(entry, tmp, &event_queue->event_list, list) {
  131. if (entry->counter)
  132. list_del(&entry->obj_list);
  133. list_del(&entry->list);
  134. kfree(entry);
  135. }
  136. spin_unlock_irq(&event_queue->lock);
  137. }
  138. static int
  139. uverbs_completion_event_file_destroy_uobj(struct ib_uobject *uobj,
  140. enum rdma_remove_reason why)
  141. {
  142. struct ib_uverbs_completion_event_file *file =
  143. container_of(uobj, struct ib_uverbs_completion_event_file,
  144. uobj);
  145. ib_uverbs_free_event_queue(&file->ev_queue);
  146. return 0;
  147. }
  148. int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs)
  149. {
  150. return 0;
  151. }
  152. EXPORT_SYMBOL(uverbs_destroy_def_handler);
  153. DECLARE_UVERBS_NAMED_OBJECT(
  154. UVERBS_OBJECT_COMP_CHANNEL,
  155. UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file),
  156. uverbs_completion_event_file_destroy_uobj,
  157. &uverbs_event_fops,
  158. "[infinibandevent]",
  159. O_RDONLY));
  160. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  161. UVERBS_METHOD_MW_DESTROY,
  162. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MW_HANDLE,
  163. UVERBS_OBJECT_MW,
  164. UVERBS_ACCESS_DESTROY,
  165. UA_MANDATORY));
  166. DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MW,
  167. UVERBS_TYPE_ALLOC_IDR(uverbs_free_mw),
  168. &UVERBS_METHOD(UVERBS_METHOD_MW_DESTROY));
  169. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  170. UVERBS_METHOD_AH_DESTROY,
  171. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_AH_HANDLE,
  172. UVERBS_OBJECT_AH,
  173. UVERBS_ACCESS_DESTROY,
  174. UA_MANDATORY));
  175. DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_AH,
  176. UVERBS_TYPE_ALLOC_IDR(uverbs_free_ah),
  177. &UVERBS_METHOD(UVERBS_METHOD_AH_DESTROY));
  178. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  179. UVERBS_METHOD_FLOW_DESTROY,
  180. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_FLOW_HANDLE,
  181. UVERBS_OBJECT_FLOW,
  182. UVERBS_ACCESS_DESTROY,
  183. UA_MANDATORY));
  184. DECLARE_UVERBS_NAMED_OBJECT(
  185. UVERBS_OBJECT_FLOW,
  186. UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uflow_object),
  187. uverbs_free_flow),
  188. &UVERBS_METHOD(UVERBS_METHOD_FLOW_DESTROY));
  189. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  190. UVERBS_METHOD_RWQ_IND_TBL_DESTROY,
  191. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_RWQ_IND_TBL_HANDLE,
  192. UVERBS_OBJECT_RWQ_IND_TBL,
  193. UVERBS_ACCESS_DESTROY,
  194. UA_MANDATORY));
  195. DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_RWQ_IND_TBL,
  196. UVERBS_TYPE_ALLOC_IDR(uverbs_free_rwq_ind_tbl),
  197. &UVERBS_METHOD(UVERBS_METHOD_RWQ_IND_TBL_DESTROY));
  198. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  199. UVERBS_METHOD_XRCD_DESTROY,
  200. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_XRCD_HANDLE,
  201. UVERBS_OBJECT_XRCD,
  202. UVERBS_ACCESS_DESTROY,
  203. UA_MANDATORY));
  204. DECLARE_UVERBS_NAMED_OBJECT(
  205. UVERBS_OBJECT_XRCD,
  206. UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object),
  207. uverbs_free_xrcd),
  208. &UVERBS_METHOD(UVERBS_METHOD_XRCD_DESTROY));
  209. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  210. UVERBS_METHOD_PD_DESTROY,
  211. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_PD_HANDLE,
  212. UVERBS_OBJECT_PD,
  213. UVERBS_ACCESS_DESTROY,
  214. UA_MANDATORY));
  215. DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_PD,
  216. UVERBS_TYPE_ALLOC_IDR(uverbs_free_pd),
  217. &UVERBS_METHOD(UVERBS_METHOD_PD_DESTROY));
  218. const struct uapi_definition uverbs_def_obj_intf[] = {
  219. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_PD,
  220. UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
  221. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_COMP_CHANNEL,
  222. UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)),
  223. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_AH,
  224. UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
  225. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MW,
  226. UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)),
  227. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW,
  228. UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)),
  229. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
  230. UVERBS_OBJECT_RWQ_IND_TBL,
  231. UAPI_DEF_OBJ_NEEDS_FN(destroy_rwq_ind_table)),
  232. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_XRCD,
  233. UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
  234. {}
  235. };