![Matan Barak](/assets/img/avatar_default.png)
Enable the ioctl() uAPI for IB by default if the standard write() uAPI (INFINIBAND_USER_ACCESS) is enabled. Verbs that are also available under the old write() uAPI are put inside a new INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI Kconfig. Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
211 lines
7 KiB
C
211 lines
7 KiB
C
/*
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* Copyright (c) 2017, Mellanox Technologies inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/uverbs_std_types.h>
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#include "rdma_core.h"
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#include "uverbs.h"
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static int uverbs_free_cq(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_cq *cq = uobject->object;
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struct ib_uverbs_event_queue *ev_queue = cq->cq_context;
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struct ib_ucq_object *ucq =
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container_of(uobject, struct ib_ucq_object, uobject);
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int ret;
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ret = ib_destroy_cq(cq);
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if (!ret || why != RDMA_REMOVE_DESTROY)
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ib_uverbs_release_ucq(uobject->context->ufile, ev_queue ?
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container_of(ev_queue,
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struct ib_uverbs_completion_event_file,
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ev_queue) : NULL,
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ucq);
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return ret;
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}
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static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
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struct ib_uverbs_file *file,
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_ucontext *ucontext = file->ucontext;
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struct ib_ucq_object *obj;
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struct ib_udata uhw;
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int ret;
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u64 user_handle;
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struct ib_cq_init_attr attr = {};
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struct ib_cq *cq;
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struct ib_uverbs_completion_event_file *ev_file = NULL;
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const struct uverbs_attr *ev_file_attr;
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struct ib_uobject *ev_file_uobj;
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if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_CREATE_CQ))
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return -EOPNOTSUPP;
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ret = uverbs_copy_from(&attr.comp_vector, attrs,
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UVERBS_ATTR_CREATE_CQ_COMP_VECTOR);
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if (!ret)
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ret = uverbs_copy_from(&attr.cqe, attrs,
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UVERBS_ATTR_CREATE_CQ_CQE);
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if (!ret)
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ret = uverbs_copy_from(&user_handle, attrs,
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UVERBS_ATTR_CREATE_CQ_USER_HANDLE);
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if (ret)
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return ret;
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/* Optional param, if it doesn't exist, we get -ENOENT and skip it */
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if (IS_UVERBS_COPY_ERR(uverbs_copy_from(&attr.flags, attrs,
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UVERBS_ATTR_CREATE_CQ_FLAGS)))
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return -EFAULT;
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ev_file_attr = uverbs_attr_get(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
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if (!IS_ERR(ev_file_attr)) {
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ev_file_uobj = ev_file_attr->obj_attr.uobject;
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ev_file = container_of(ev_file_uobj,
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struct ib_uverbs_completion_event_file,
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uobj_file.uobj);
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uverbs_uobject_get(ev_file_uobj);
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}
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if (attr.comp_vector >= ucontext->ufile->device->num_comp_vectors) {
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ret = -EINVAL;
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goto err_event_file;
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}
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obj = container_of(uverbs_attr_get(attrs,
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UVERBS_ATTR_CREATE_CQ_HANDLE)->obj_attr.uobject,
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typeof(*obj), uobject);
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obj->uverbs_file = ucontext->ufile;
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obj->comp_events_reported = 0;
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obj->async_events_reported = 0;
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INIT_LIST_HEAD(&obj->comp_list);
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INIT_LIST_HEAD(&obj->async_list);
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/* Temporary, only until drivers get the new uverbs_attr_bundle */
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create_udata(attrs, &uhw);
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cq = ib_dev->create_cq(ib_dev, &attr, ucontext, &uhw);
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if (IS_ERR(cq)) {
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ret = PTR_ERR(cq);
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goto err_event_file;
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}
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cq->device = ib_dev;
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cq->uobject = &obj->uobject;
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cq->comp_handler = ib_uverbs_comp_handler;
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cq->event_handler = ib_uverbs_cq_event_handler;
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cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
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obj->uobject.object = cq;
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obj->uobject.user_handle = user_handle;
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atomic_set(&cq->usecnt, 0);
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cq->res.type = RDMA_RESTRACK_CQ;
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rdma_restrack_add(&cq->res);
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ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,
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sizeof(cq->cqe));
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if (ret)
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goto err_cq;
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return 0;
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err_cq:
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ib_destroy_cq(cq);
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err_event_file:
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if (ev_file)
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uverbs_uobject_put(ev_file_uobj);
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return ret;
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};
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static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_CQ_CREATE,
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&UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE, UVERBS_OBJECT_CQ,
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UVERBS_ACCESS_NEW,
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE,
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UVERBS_ATTR_TYPE(u32),
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE,
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UVERBS_ATTR_TYPE(u64),
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL,
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UVERBS_OBJECT_COMP_CHANNEL,
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UVERBS_ACCESS_READ),
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&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR, UVERBS_ATTR_TYPE(u32),
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_FLAGS, UVERBS_ATTR_TYPE(u32)),
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&UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE, UVERBS_ATTR_TYPE(u32),
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&uverbs_uhw_compat_in, &uverbs_uhw_compat_out);
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static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(struct ib_device *ib_dev,
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struct ib_uverbs_file *file,
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_uverbs_destroy_cq_resp resp;
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struct ib_uobject *uobj =
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uverbs_attr_get(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE)->obj_attr.uobject;
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struct ib_ucq_object *obj = container_of(uobj, struct ib_ucq_object,
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uobject);
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int ret;
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if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_DESTROY_CQ))
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return -EOPNOTSUPP;
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ret = rdma_explicit_destroy(uobj);
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if (ret)
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return ret;
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resp.comp_events_reported = obj->comp_events_reported;
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resp.async_events_reported = obj->async_events_reported;
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return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp,
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sizeof(resp));
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}
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static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_CQ_DESTROY,
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&UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE, UVERBS_OBJECT_CQ,
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UVERBS_ACCESS_DESTROY,
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
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&UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP,
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UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp),
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UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
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DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_CQ,
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&UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0,
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uverbs_free_cq),
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#if IS_ENABLED(CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI)
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&UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE),
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&UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY)
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#endif
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);
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