123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269 |
- /*
- * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
- #include "rdma_core.h"
- #include "uverbs.h"
- #include <rdma/uverbs_std_types.h>
- #include "restrack.h"
- static int uverbs_free_mr(struct ib_uobject *uobject,
- enum rdma_remove_reason why,
- struct uverbs_attr_bundle *attrs)
- {
- return ib_dereg_mr_user((struct ib_mr *)uobject->object,
- &attrs->driver_udata);
- }
- static int UVERBS_HANDLER(UVERBS_METHOD_ADVISE_MR)(
- struct uverbs_attr_bundle *attrs)
- {
- struct ib_pd *pd =
- uverbs_attr_get_obj(attrs, UVERBS_ATTR_ADVISE_MR_PD_HANDLE);
- enum ib_uverbs_advise_mr_advice advice;
- struct ib_device *ib_dev = pd->device;
- struct ib_sge *sg_list;
- int num_sge;
- u32 flags;
- int ret;
- /* FIXME: Extend the UAPI_DEF_OBJ_NEEDS_FN stuff.. */
- if (!ib_dev->ops.advise_mr)
- return -EOPNOTSUPP;
- ret = uverbs_get_const(&advice, attrs, UVERBS_ATTR_ADVISE_MR_ADVICE);
- if (ret)
- return ret;
- ret = uverbs_get_flags32(&flags, attrs, UVERBS_ATTR_ADVISE_MR_FLAGS,
- IB_UVERBS_ADVISE_MR_FLAG_FLUSH);
- if (ret)
- return ret;
- num_sge = uverbs_attr_ptr_get_array_size(
- attrs, UVERBS_ATTR_ADVISE_MR_SGE_LIST, sizeof(struct ib_sge));
- if (num_sge <= 0)
- return num_sge;
- sg_list = uverbs_attr_get_alloced_ptr(attrs,
- UVERBS_ATTR_ADVISE_MR_SGE_LIST);
- return ib_dev->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
- attrs);
- }
- static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(
- struct uverbs_attr_bundle *attrs)
- {
- struct ib_dm_mr_attr attr = {};
- struct ib_uobject *uobj =
- uverbs_attr_get_uobject(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
- struct ib_dm *dm =
- uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_DM_HANDLE);
- struct ib_pd *pd =
- uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DM_MR_PD_HANDLE);
- struct ib_device *ib_dev = pd->device;
- struct ib_mr *mr;
- int ret;
- if (!ib_dev->ops.reg_dm_mr)
- return -EOPNOTSUPP;
- ret = uverbs_copy_from(&attr.offset, attrs, UVERBS_ATTR_REG_DM_MR_OFFSET);
- if (ret)
- return ret;
- ret = uverbs_copy_from(&attr.length, attrs,
- UVERBS_ATTR_REG_DM_MR_LENGTH);
- if (ret)
- return ret;
- ret = uverbs_get_flags32(&attr.access_flags, attrs,
- UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
- IB_ACCESS_SUPPORTED);
- if (ret)
- return ret;
- if (!(attr.access_flags & IB_ZERO_BASED))
- return -EINVAL;
- ret = ib_check_mr_access(attr.access_flags);
- if (ret)
- return ret;
- if (attr.offset > dm->length || attr.length > dm->length ||
- attr.length > dm->length - attr.offset)
- return -EINVAL;
- mr = pd->device->ops.reg_dm_mr(pd, dm, &attr, attrs);
- if (IS_ERR(mr))
- return PTR_ERR(mr);
- mr->device = pd->device;
- mr->pd = pd;
- mr->type = IB_MR_TYPE_DM;
- mr->dm = dm;
- mr->uobject = uobj;
- atomic_inc(&pd->usecnt);
- atomic_inc(&dm->usecnt);
- rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
- rdma_restrack_set_name(&mr->res, NULL);
- rdma_restrack_add(&mr->res);
- uobj->object = mr;
- uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_LKEY, &mr->lkey,
- sizeof(mr->lkey));
- if (ret)
- return ret;
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
- &mr->rkey, sizeof(mr->rkey));
- return ret;
- }
- static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)(
- struct uverbs_attr_bundle *attrs)
- {
- struct ib_mr *mr =
- uverbs_attr_get_obj(attrs, UVERBS_ATTR_QUERY_MR_HANDLE);
- int ret;
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LKEY, &mr->lkey,
- sizeof(mr->lkey));
- if (ret)
- return ret;
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_RKEY,
- &mr->rkey, sizeof(mr->rkey));
- if (ret)
- return ret;
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
- &mr->length, sizeof(mr->length));
- if (ret)
- return ret;
- ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_IOVA,
- &mr->iova, sizeof(mr->iova));
- return IS_UVERBS_COPY_ERR(ret) ? ret : 0;
- }
- DECLARE_UVERBS_NAMED_METHOD(
- UVERBS_METHOD_ADVISE_MR,
- UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE,
- UVERBS_OBJECT_PD,
- UVERBS_ACCESS_READ,
- UA_MANDATORY),
- UVERBS_ATTR_CONST_IN(UVERBS_ATTR_ADVISE_MR_ADVICE,
- enum ib_uverbs_advise_mr_advice,
- UA_MANDATORY),
- UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_ADVISE_MR_FLAGS,
- enum ib_uverbs_advise_mr_flag,
- UA_MANDATORY),
- UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ADVISE_MR_SGE_LIST,
- UVERBS_ATTR_MIN_SIZE(sizeof(struct ib_uverbs_sge)),
- UA_MANDATORY,
- UA_ALLOC_AND_COPY));
- DECLARE_UVERBS_NAMED_METHOD(
- UVERBS_METHOD_QUERY_MR,
- UVERBS_ATTR_IDR(UVERBS_ATTR_QUERY_MR_HANDLE,
- UVERBS_OBJECT_MR,
- UVERBS_ACCESS_READ,
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_RKEY,
- UVERBS_ATTR_TYPE(u32),
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LKEY,
- UVERBS_ATTR_TYPE(u32),
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
- UVERBS_ATTR_TYPE(u64),
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_IOVA,
- UVERBS_ATTR_TYPE(u64),
- UA_OPTIONAL));
- DECLARE_UVERBS_NAMED_METHOD(
- UVERBS_METHOD_DM_MR_REG,
- UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_HANDLE,
- UVERBS_OBJECT_MR,
- UVERBS_ACCESS_NEW,
- UA_MANDATORY),
- UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_OFFSET,
- UVERBS_ATTR_TYPE(u64),
- UA_MANDATORY),
- UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DM_MR_LENGTH,
- UVERBS_ATTR_TYPE(u64),
- UA_MANDATORY),
- UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_PD_HANDLE,
- UVERBS_OBJECT_PD,
- UVERBS_ACCESS_READ,
- UA_MANDATORY),
- UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_REG_DM_MR_ACCESS_FLAGS,
- enum ib_access_flags),
- UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_DM_HANDLE,
- UVERBS_OBJECT_DM,
- UVERBS_ACCESS_READ,
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_LKEY,
- UVERBS_ATTR_TYPE(u32),
- UA_MANDATORY),
- UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DM_MR_RESP_RKEY,
- UVERBS_ATTR_TYPE(u32),
- UA_MANDATORY));
- DECLARE_UVERBS_NAMED_METHOD_DESTROY(
- UVERBS_METHOD_MR_DESTROY,
- UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MR_HANDLE,
- UVERBS_OBJECT_MR,
- UVERBS_ACCESS_DESTROY,
- UA_MANDATORY));
- DECLARE_UVERBS_NAMED_OBJECT(
- UVERBS_OBJECT_MR,
- UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr),
- &UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG),
- &UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY),
- &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR),
- &UVERBS_METHOD(UVERBS_METHOD_QUERY_MR));
- const struct uapi_definition uverbs_def_obj_mr[] = {
- UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR,
- UAPI_DEF_OBJ_NEEDS_FN(dereg_mr)),
- {}
- };
|