uverbs_std_types_mr.c 7.7 KB

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  1. /*
  2. * Copyright (c) 2018, 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_core.h"
  33. #include "uverbs.h"
  34. #include <rdma/uverbs_std_types.h>
  35. #include "restrack.h"
  36. static int uverbs_free_mr(struct ib_uobject *uobject,
  37. enum rdma_remove_reason why,
  38. struct uverbs_attr_bundle *attrs)
  39. {
  40. return ib_dereg_mr_user((struct ib_mr *)uobject->object,
  41. &attrs->driver_udata);
  42. }
  43. static int UVERBS_HANDLER(UVERBS_METHOD_ADVISE_MR)(
  44. struct uverbs_attr_bundle *attrs)
  45. {
  46. struct ib_pd *pd =
  47. uverbs_attr_get_obj(attrs, UVERBS_ATTR_ADVISE_MR_PD_HANDLE);
  48. enum ib_uverbs_advise_mr_advice advice;
  49. struct ib_device *ib_dev = pd->device;
  50. struct ib_sge *sg_list;
  51. int num_sge;
  52. u32 flags;
  53. int ret;
  54. /* FIXME: Extend the UAPI_DEF_OBJ_NEEDS_FN stuff.. */
  55. if (!ib_dev->ops.advise_mr)
  56. return -EOPNOTSUPP;
  57. ret = uverbs_get_const(&advice, attrs, UVERBS_ATTR_ADVISE_MR_ADVICE);
  58. if (ret)
  59. return ret;
  60. ret = uverbs_get_flags32(&flags, attrs, UVERBS_ATTR_ADVISE_MR_FLAGS,
  61. IB_UVERBS_ADVISE_MR_FLAG_FLUSH);
  62. if (ret)
  63. return ret;
  64. num_sge = uverbs_attr_ptr_get_array_size(
  65. attrs, UVERBS_ATTR_ADVISE_MR_SGE_LIST, sizeof(struct ib_sge));
  66. if (num_sge <= 0)
  67. return num_sge;
  68. sg_list = uverbs_attr_get_alloced_ptr(attrs,
  69. UVERBS_ATTR_ADVISE_MR_SGE_LIST);
  70. return ib_dev->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
  71. attrs);
  72. }
  73. static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(
  74. struct uverbs_attr_bundle *attrs)
  75. {
  76. struct ib_dm_mr_attr attr = {};
  77. struct ib_uobject *uobj =
  78. uverbs_attr_get_uobject(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
  79. struct ib_dm *dm =
  80. uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_DM_HANDLE);
  81. struct ib_pd *pd =
  82. uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_PD_HANDLE);
  83. struct ib_device *ib_dev = pd->device;
  84. struct ib_mr *mr;
  85. int ret;
  86. if (!ib_dev->ops.reg_dm_mr)
  87. return -EOPNOTSUPP;
  88. ret = uverbs_copy_from(&attr.offset, attrs, UVERBS_ATTR_REG_DM_MR_OFFSET);
  89. if (ret)
  90. return ret;
  91. ret = uverbs_copy_from(&attr.length, attrs,
  92. UVERBS_ATTR_REG_DM_MR_LENGTH);
  93. if (ret)
  94. return ret;
  95. ret = uverbs_get_flags32(&attr.access_flags, attrs,
  96. UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
  97. IB_ACCESS_SUPPORTED);
  98. if (ret)
  99. return ret;
  100. if (!(attr.access_flags & IB_ZERO_BASED))
  101. return -EINVAL;
  102. ret = ib_check_mr_access(attr.access_flags);
  103. if (ret)
  104. return ret;
  105. if (attr.offset > dm->length || attr.length > dm->length ||
  106. attr.length > dm->length - attr.offset)
  107. return -EINVAL;
  108. mr = pd->device->ops.reg_dm_mr(pd, dm, &attr, attrs);
  109. if (IS_ERR(mr))
  110. return PTR_ERR(mr);
  111. mr->device = pd->device;
  112. mr->pd = pd;
  113. mr->type = IB_MR_TYPE_DM;
  114. mr->dm = dm;
  115. mr->uobject = uobj;
  116. atomic_inc(&pd->usecnt);
  117. atomic_inc(&dm->usecnt);
  118. rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
  119. rdma_restrack_set_name(&mr->res, NULL);
  120. rdma_restrack_add(&mr->res);
  121. uobj->object = mr;
  122. uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
  123. ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_LKEY, &mr->lkey,
  124. sizeof(mr->lkey));
  125. if (ret)
  126. return ret;
  127. ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
  128. &mr->rkey, sizeof(mr->rkey));
  129. return ret;
  130. }
  131. static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)(
  132. struct uverbs_attr_bundle *attrs)
  133. {
  134. struct ib_mr *mr =
  135. uverbs_attr_get_obj(attrs, UVERBS_ATTR_QUERY_MR_HANDLE);
  136. int ret;
  137. ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LKEY, &mr->lkey,
  138. sizeof(mr->lkey));
  139. if (ret)
  140. return ret;
  141. ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_RKEY,
  142. &mr->rkey, sizeof(mr->rkey));
  143. if (ret)
  144. return ret;
  145. ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
  146. &mr->length, sizeof(mr->length));
  147. if (ret)
  148. return ret;
  149. ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_IOVA,
  150. &mr->iova, sizeof(mr->iova));
  151. return IS_UVERBS_COPY_ERR(ret) ? ret : 0;
  152. }
  153. DECLARE_UVERBS_NAMED_METHOD(
  154. UVERBS_METHOD_ADVISE_MR,
  155. UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE,
  156. UVERBS_OBJECT_PD,
  157. UVERBS_ACCESS_READ,
  158. UA_MANDATORY),
  159. UVERBS_ATTR_CONST_IN(UVERBS_ATTR_ADVISE_MR_ADVICE,
  160. enum ib_uverbs_advise_mr_advice,
  161. UA_MANDATORY),
  162. UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_ADVISE_MR_FLAGS,
  163. enum ib_uverbs_advise_mr_flag,
  164. UA_MANDATORY),
  165. UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ADVISE_MR_SGE_LIST,
  166. UVERBS_ATTR_MIN_SIZE(sizeof(struct ib_uverbs_sge)),
  167. UA_MANDATORY,
  168. UA_ALLOC_AND_COPY));
  169. DECLARE_UVERBS_NAMED_METHOD(
  170. UVERBS_METHOD_QUERY_MR,
  171. UVERBS_ATTR_IDR(UVERBS_ATTR_QUERY_MR_HANDLE,
  172. UVERBS_OBJECT_MR,
  173. UVERBS_ACCESS_READ,
  174. UA_MANDATORY),
  175. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_RKEY,
  176. UVERBS_ATTR_TYPE(u32),
  177. UA_MANDATORY),
  178. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LKEY,
  179. UVERBS_ATTR_TYPE(u32),
  180. UA_MANDATORY),
  181. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
  182. UVERBS_ATTR_TYPE(u64),
  183. UA_MANDATORY),
  184. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_IOVA,
  185. UVERBS_ATTR_TYPE(u64),
  186. UA_OPTIONAL));
  187. DECLARE_UVERBS_NAMED_METHOD(
  188. UVERBS_METHOD_DM_MR_REG,
  189. UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_HANDLE,
  190. UVERBS_OBJECT_MR,
  191. UVERBS_ACCESS_NEW,
  192. UA_MANDATORY),
  193. UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_OFFSET,
  194. UVERBS_ATTR_TYPE(u64),
  195. UA_MANDATORY),
  196. UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_LENGTH,
  197. UVERBS_ATTR_TYPE(u64),
  198. UA_MANDATORY),
  199. UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_PD_HANDLE,
  200. UVERBS_OBJECT_PD,
  201. UVERBS_ACCESS_READ,
  202. UA_MANDATORY),
  203. UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
  204. enum ib_access_flags),
  205. UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_DM_HANDLE,
  206. UVERBS_OBJECT_DM,
  207. UVERBS_ACCESS_READ,
  208. UA_MANDATORY),
  209. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_LKEY,
  210. UVERBS_ATTR_TYPE(u32),
  211. UA_MANDATORY),
  212. UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
  213. UVERBS_ATTR_TYPE(u32),
  214. UA_MANDATORY));
  215. DECLARE_UVERBS_NAMED_METHOD_DESTROY(
  216. UVERBS_METHOD_MR_DESTROY,
  217. UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MR_HANDLE,
  218. UVERBS_OBJECT_MR,
  219. UVERBS_ACCESS_DESTROY,
  220. UA_MANDATORY));
  221. DECLARE_UVERBS_NAMED_OBJECT(
  222. UVERBS_OBJECT_MR,
  223. UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr),
  224. &UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG),
  225. &UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY),
  226. &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR),
  227. &UVERBS_METHOD(UVERBS_METHOD_QUERY_MR));
  228. const struct uapi_definition uverbs_def_obj_mr[] = {
  229. UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR,
  230. UAPI_DEF_OBJ_NEEDS_FN(dereg_mr)),
  231. {}
  232. };