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sys/ofed/drivers/infiniband/core/ib_uverbs_std_types_cq.c
- This file was added.
/* | |||||
* 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 <rdma/uverbs_std_types.h> | |||||
#include "rdma_core.h" | |||||
#include "uverbs.h" | |||||
static int uverbs_free_cq(struct ib_uobject *uobject, | |||||
enum rdma_remove_reason why, | |||||
struct uverbs_attr_bundle *attrs) | |||||
{ | |||||
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, uevent.uobject); | |||||
int ret; | |||||
ret = ib_destroy_cq_user(cq, &attrs->driver_udata); | |||||
if (ib_is_destroy_retryable(ret, why, uobject)) | |||||
return ret; | |||||
ib_uverbs_release_ucq( | |||||
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 uverbs_attr_bundle *attrs) | |||||
{ | |||||
struct ib_ucq_object *obj = container_of( | |||||
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE), | |||||
typeof(*obj), uevent.uobject); | |||||
struct ib_device *ib_dev = attrs->context->device; | |||||
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->create_cq || !ib_dev->destroy_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; | |||||
ret = uverbs_get_flags32(&attr.flags, attrs, | |||||
UVERBS_ATTR_CREATE_CQ_FLAGS, | |||||
IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION | | |||||
IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN); | |||||
if (ret) | |||||
return ret; | |||||
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); | |||||
uverbs_uobject_get(ev_file_uobj); | |||||
} | |||||
if (attr.comp_vector >= attrs->ufile->device->num_comp_vectors) { | |||||
ret = -EINVAL; | |||||
goto err_event_file; | |||||
} | |||||
INIT_LIST_HEAD(&obj->comp_list); | |||||
INIT_LIST_HEAD(&obj->uevent.event_list); | |||||
cq = rdma_zalloc_drv_obj(ib_dev, ib_cq); | |||||
if (!cq) { | |||||
ret = -ENOMEM; | |||||
goto err_event_file; | |||||
} | |||||
cq->device = ib_dev; | |||||
cq->uobject = obj; | |||||
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; | |||||
atomic_set(&cq->usecnt, 0); | |||||
ret = ib_dev->create_cq(cq, &attr, &attrs->driver_udata); | |||||
if (ret) | |||||
goto err_free; | |||||
obj->uevent.uobject.object = cq; | |||||
obj->uevent.uobject.user_handle = user_handle; | |||||
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_user(cq, uverbs_get_cleared_udata(attrs)); | |||||
cq = NULL; | |||||
err_free: | |||||
kfree(cq); | |||||
err_event_file: | |||||
if (ev_file) | |||||
uverbs_uobject_put(ev_file_uobj); | |||||
return ret; | |||||
}; | |||||
DECLARE_UVERBS_NAMED_METHOD( | |||||
UVERBS_METHOD_CQ_CREATE, | |||||
UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_CQ_HANDLE, | |||||
UVERBS_OBJECT_CQ, | |||||
UVERBS_ACCESS_NEW, | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_CQE, | |||||
UVERBS_ATTR_TYPE(u32), | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_USER_HANDLE, | |||||
UVERBS_ATTR_TYPE(u64), | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL, | |||||
UVERBS_OBJECT_COMP_CHANNEL, | |||||
UVERBS_ACCESS_READ, | |||||
UA_OPTIONAL), | |||||
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_CQ_COMP_VECTOR, | |||||
UVERBS_ATTR_TYPE(u32), | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_CQ_FLAGS, | |||||
enum ib_uverbs_ex_create_cq_flags), | |||||
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_CQ_RESP_CQE, | |||||
UVERBS_ATTR_TYPE(u32), | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_UHW()); | |||||
static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)( | |||||
struct uverbs_attr_bundle *attrs) | |||||
{ | |||||
struct ib_uobject *uobj = | |||||
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE); | |||||
struct ib_ucq_object *obj = | |||||
container_of(uobj, struct ib_ucq_object, uevent.uobject); | |||||
struct ib_uverbs_destroy_cq_resp resp = { | |||||
.comp_events_reported = obj->comp_events_reported, | |||||
.async_events_reported = obj->uevent.events_reported | |||||
}; | |||||
return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_CQ_RESP, &resp, | |||||
sizeof(resp)); | |||||
} | |||||
DECLARE_UVERBS_NAMED_METHOD( | |||||
UVERBS_METHOD_CQ_DESTROY, | |||||
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_CQ_HANDLE, | |||||
UVERBS_OBJECT_CQ, | |||||
UVERBS_ACCESS_DESTROY, | |||||
UA_MANDATORY), | |||||
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_CQ_RESP, | |||||
UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_cq_resp), | |||||
UA_MANDATORY)); | |||||
DECLARE_UVERBS_NAMED_OBJECT( | |||||
UVERBS_OBJECT_CQ, | |||||
UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), uverbs_free_cq), | |||||
#if 1 /* CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI */ | |||||
&UVERBS_METHOD(UVERBS_METHOD_CQ_CREATE), | |||||
&UVERBS_METHOD(UVERBS_METHOD_CQ_DESTROY) | |||||
#endif | |||||
); | |||||
const struct uapi_definition uverbs_def_obj_cq[] = { | |||||
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_CQ, | |||||
UAPI_DEF_OBJ_NEEDS_FN(destroy_cq)), | |||||
{} | |||||
}; |