2 * Copyright (c) 2018, 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:
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11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
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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_core.h"
35 #include <rdma/uverbs_std_types.h>
37 static int uverbs_free_mr(struct ib_uobject *uobject,
38 enum rdma_remove_reason why,
39 struct uverbs_attr_bundle *attrs)
41 return ib_dereg_mr_user((struct ib_mr *)uobject->object,
42 &attrs->driver_udata);
45 static int UVERBS_HANDLER(UVERBS_METHOD_ADVISE_MR)(
46 struct uverbs_attr_bundle *attrs)
49 uverbs_attr_get_obj(attrs, UVERBS_ATTR_ADVISE_MR_PD_HANDLE);
50 enum ib_uverbs_advise_mr_advice advice;
51 struct ib_device *ib_dev = pd->device;
52 struct ib_sge *sg_list;
57 /* FIXME: Extend the UAPI_DEF_OBJ_NEEDS_FN stuff.. */
58 if (!ib_dev->ops.advise_mr)
61 ret = uverbs_get_const(&advice, attrs, UVERBS_ATTR_ADVISE_MR_ADVICE);
65 ret = uverbs_get_flags32(&flags, attrs, UVERBS_ATTR_ADVISE_MR_FLAGS,
66 IB_UVERBS_ADVISE_MR_FLAG_FLUSH);
70 num_sge = uverbs_attr_ptr_get_array_size(
71 attrs, UVERBS_ATTR_ADVISE_MR_SGE_LIST, sizeof(struct ib_sge));
75 sg_list = uverbs_attr_get_alloced_ptr(attrs,
76 UVERBS_ATTR_ADVISE_MR_SGE_LIST);
77 return ib_dev->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
81 static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(
82 struct uverbs_attr_bundle *attrs)
84 struct ib_dm_mr_attr attr = {};
85 struct ib_uobject *uobj =
86 uverbs_attr_get_uobject(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
88 uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_DM_HANDLE);
90 uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_PD_HANDLE);
91 struct ib_device *ib_dev = pd->device;
96 if (!ib_dev->ops.reg_dm_mr)
99 ret = uverbs_copy_from(&attr.offset, attrs, UVERBS_ATTR_REG_DM_MR_OFFSET);
103 ret = uverbs_copy_from(&attr.length, attrs,
104 UVERBS_ATTR_REG_DM_MR_LENGTH);
108 ret = uverbs_get_flags32(&attr.access_flags, attrs,
109 UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
110 IB_ACCESS_SUPPORTED);
114 if (!(attr.access_flags & IB_ZERO_BASED))
117 ret = ib_check_mr_access(attr.access_flags);
121 if (attr.offset > dm->length || attr.length > dm->length ||
122 attr.length > dm->length - attr.offset)
125 mr = pd->device->ops.reg_dm_mr(pd, dm, &attr, attrs);
129 mr->device = pd->device;
131 mr->type = IB_MR_TYPE_DM;
134 atomic_inc(&pd->usecnt);
135 atomic_inc(&dm->usecnt);
139 uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
141 ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_LKEY, &mr->lkey,
146 ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
147 &mr->rkey, sizeof(mr->rkey));
151 static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)(
152 struct uverbs_attr_bundle *attrs)
155 uverbs_attr_get_obj(attrs, UVERBS_ATTR_QUERY_MR_HANDLE);
158 ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LKEY, &mr->lkey,
163 ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_RKEY,
164 &mr->rkey, sizeof(mr->rkey));
169 ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
170 &mr->length, sizeof(mr->length));
175 ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_IOVA,
176 &mr->iova, sizeof(mr->iova));
178 return IS_UVERBS_COPY_ERR(ret) ? ret : 0;
181 DECLARE_UVERBS_NAMED_METHOD(
182 UVERBS_METHOD_ADVISE_MR,
183 UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE,
187 UVERBS_ATTR_CONST_IN(UVERBS_ATTR_ADVISE_MR_ADVICE,
188 enum ib_uverbs_advise_mr_advice,
190 UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_ADVISE_MR_FLAGS,
191 enum ib_uverbs_advise_mr_flag,
193 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ADVISE_MR_SGE_LIST,
194 UVERBS_ATTR_MIN_SIZE(sizeof(struct ib_uverbs_sge)),
198 DECLARE_UVERBS_NAMED_METHOD(
199 UVERBS_METHOD_QUERY_MR,
200 UVERBS_ATTR_IDR(UVERBS_ATTR_QUERY_MR_HANDLE,
204 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_RKEY,
205 UVERBS_ATTR_TYPE(u32),
207 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LKEY,
208 UVERBS_ATTR_TYPE(u32),
210 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
211 UVERBS_ATTR_TYPE(u64),
213 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_IOVA,
214 UVERBS_ATTR_TYPE(u64),
217 DECLARE_UVERBS_NAMED_METHOD(
218 UVERBS_METHOD_DM_MR_REG,
219 UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_HANDLE,
223 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_OFFSET,
224 UVERBS_ATTR_TYPE(u64),
226 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_LENGTH,
227 UVERBS_ATTR_TYPE(u64),
229 UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_PD_HANDLE,
233 UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
234 enum ib_access_flags),
235 UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_DM_HANDLE,
239 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_LKEY,
240 UVERBS_ATTR_TYPE(u32),
242 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
243 UVERBS_ATTR_TYPE(u32),
246 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
247 UVERBS_METHOD_MR_DESTROY,
248 UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MR_HANDLE,
250 UVERBS_ACCESS_DESTROY,
253 DECLARE_UVERBS_NAMED_OBJECT(
255 UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr),
256 &UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG),
257 &UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY),
258 &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR),
259 &UVERBS_METHOD(UVERBS_METHOD_QUERY_MR));
261 const struct uapi_definition uverbs_def_obj_mr[] = {
262 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR,
263 UAPI_DEF_OBJ_NEEDS_FN(dereg_mr)),