/* * 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 "uverbs.h" #include static int uverbs_free_mr(struct ib_uobject *uobject, enum rdma_remove_reason why) { return ib_dereg_mr((struct ib_mr *)uobject->object); } 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->dm = dm; mr->uobject = uobj; atomic_inc(&pd->usecnt); atomic_inc(&dm->usecnt); uobj->object = mr; ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_LKEY, &mr->lkey, sizeof(mr->lkey)); if (ret) goto err_dereg; ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DM_MR_RESP_RKEY, &mr->rkey, sizeof(mr->rkey)); if (ret) goto err_dereg; return 0; err_dereg: ib_dereg_mr(mr); return ret; } 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_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)); const struct uapi_definition uverbs_def_obj_mr[] = { UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR, UAPI_DEF_OBJ_NEEDS_FN(dereg_mr)), {} };