/* * Copyright (c) 2017, 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 #include "rdma_core.h" #include "uverbs.h" static int uverbs_free_cq(struct ib_uobject *uobject, enum rdma_remove_reason why) { struct ib_cq *cq = uobject->object; struct ib_uverbs_event_queue *ev_queue = cq->cq_context; struct ib_ucq_object *ucq = container_of(uobject, struct ib_ucq_object, uobject); int ret; ret = ib_destroy_cq(cq); if (!ret || why != RDMA_REMOVE_DESTROY) ib_uverbs_release_ucq(uobject->context->ufile, ev_queue ? container_of(ev_queue, struct ib_uverbs_completion_event_file, ev_queue) : NULL, ucq); return ret; } static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev, struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs) { struct ib_ucontext *ucontext = file->ucontext; struct ib_ucq_object *obj; struct ib_udata uhw; int ret; u64 user_handle; struct ib_cq_init_attr attr = {}; struct ib_cq *cq; struct ib_uverbs_completion_event_file *ev_file = NULL; struct ib_uobject *ev_file_uobj; if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_CREATE_CQ)) return -EOPNOTSUPP; ret = uverbs_copy_from(&attr.comp_vector, attrs, UVERBS_ATTR_CREATE_CQ_COMP_VECTOR); if (!ret) ret = uverbs_copy_from(&attr.cqe, attrs, UVERBS_ATTR_CREATE_CQ_CQE); if (!ret) ret = uverbs_copy_from(&user_handle, attrs, UVERBS_ATTR_CREATE_CQ_USER_HANDLE); if (ret) return ret; /* Optional param, if it doesn't exist, we get -ENOENT and skip it */ if (IS_UVERBS_COPY_ERR(uverbs_copy_from(&attr.flags, attrs, UVERBS_ATTR_CREATE_CQ_FLAGS))) return -EFAULT; ev_file_uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL); if (!IS_ERR(ev_file_uobj)) { ev_file = container_of(ev_file_uobj, struct ib_uverbs_completion_event_file, uobj_file.uobj); uverbs_uobject_get(ev_file_uobj); } if (attr.comp_vector >= ucontext->ufile->device->num_comp_vectors) { ret = -EINVAL; goto err_event_file; } obj = container_of(uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE), typeof(*obj), uobject); obj->uverbs_file = ucontext->ufile; obj->comp_events_reported = 0; obj->async_events_reported = 0; INIT_LIST_HEAD(&obj->comp_list); INIT_LIST_HEAD(&obj->async_list); /* Temporary, only until drivers get the new uverbs_attr_bundle */ create_udata(attrs, &uhw); cq = ib_dev->create_cq(ib_dev, &attr, ucontext, &uhw); if (IS_ERR(cq)) { ret = PTR_ERR(cq); goto err_event_file; } cq->device = ib_dev; cq->uobject = &obj->uobject; cq->comp_handler = ib_uverbs_comp_handler; cq->event_handler = ib_uverbs_cq_event_handler; cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; obj->uobject.object = cq; obj->uobject.user_handle = user_handle; atomic_set(&cq->usecnt, 0); cq->res.type = RDMA_RESTRACK_CQ; rdma_restrack_add(&cq->res); ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe, sizeof(cq->cqe)); if (ret) goto err_cq; return 0; err_cq: ib_destroy_cq(cq); err_event_file: if (ev_file) uverbs_uobject_put(ev_file_uobj); return ret; }; static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_CQ_CREATE, &UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE, UVERBS_OBJECT_CQ, UVERBS_ACCESS_NEW, UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE, UVERBS_ATTR_TYPE(u32), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE, UVERBS_ATTR_TYPE(u64), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL, UVERBS_OBJECT_COMP_CHANNEL, UVERBS_ACCESS_READ), &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR, UVERBS_ATTR_TYPE(u32), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_FLAGS, UVERBS_ATTR_TYPE(u32)), &UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE, UVERBS_ATTR_TYPE(u32), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &uverbs_uhw_compat_in, &uverbs_uhw_compat_out); static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(struct ib_device *ib_dev, struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs) { struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE); struct ib_uverbs_destroy_cq_resp resp; struct ib_ucq_object *obj; int ret; if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_ucq_object, uobject); if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_DESTROY_CQ)) return -EOPNOTSUPP; ret = rdma_explicit_destroy(uobj); if (ret) return ret; resp.comp_events_reported = obj->comp_events_reported; resp.async_events_reported = obj->async_events_reported; return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp, sizeof(resp)); } static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_CQ_DESTROY, &UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE, UVERBS_OBJECT_CQ, UVERBS_ACCESS_DESTROY, UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), &UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP, UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY))); DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_CQ, &UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0, uverbs_free_cq), #if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI) &UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE), &UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY) #endif );