// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved.
*/
#include <rdma/uverbs_std_types.h>
#include "rdma_core.h"
#include "uverbs.h"
static int uverbs_free_wq(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct ib_wq *wq = uobject->object;
struct ib_uwq_object *uwq =
container_of(uobject, struct ib_uwq_object, uevent.uobject);
int ret;
ret = ib_destroy_wq_user(wq, &attrs->driver_udata);
if (ret)
return ret;
ib_uverbs_release_uevent(&uwq->uevent);
return 0;
}
static int UVERBS_HANDLER(UVERBS_METHOD_WQ_CREATE)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uwq_object *obj = container_of(
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_WQ_HANDLE),
typeof(*obj), uevent.uobject);
struct ib_pd *pd =
uverbs_attr_get_obj(attrs, UVERBS_ATTR_CREATE_WQ_PD_HANDLE);
struct ib_cq *cq =
uverbs_attr_get_obj(attrs, UVERBS_ATTR_CREATE_WQ_CQ_HANDLE);
struct ib_wq_init_attr wq_init_attr = {};
struct ib_wq *wq;
u64 user_handle;
int ret;
ret = uverbs_get_flags32(&wq_init_attr.create_flags, attrs,
UVERBS_ATTR_CREATE_WQ_FLAGS,
IB_UVERBS_WQ_FLAGS_CVLAN_STRIPPING |
IB_UVERBS_WQ_FLAGS_SCATTER_FCS |
IB_UVERBS_WQ_FLAGS_DELAY_DROP |
IB_UVERBS_WQ_FLAGS_PCI_WRITE_END_PADDING);
if (!ret)
ret = uverbs_copy_from(&wq_init_attr.max_sge, attrs,
UVERBS_ATTR_CREATE_WQ_MAX_SGE);
if (!ret)
ret = uverbs_copy_from(&wq_init_attr.max_wr, attrs,
UVERBS_ATTR_CREATE_WQ_MAX_WR);
if (!ret)
ret = uverbs_copy_from(&user_handle, attrs,
UVERBS_ATTR_CREATE_WQ_USER_HANDLE);
if (!ret)
ret = uverbs_get_const(&wq_init_attr.wq_type, attrs,
UVERBS_ATTR_CREATE_WQ_TYPE);
if (ret)
return ret;
if (wq_init_attr.wq_type != IB_WQT_RQ)
return -EINVAL;
obj->uevent.event_file = ib_uverbs_get_async_event(attrs,
UVERBS_ATTR_CREATE_WQ_EVENT_FD);
obj->uevent.uobject.user_handle = user_handle;
INIT_LIST_HEAD(&obj->uevent.event_list);
wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
wq_init_attr.wq_context = attrs->ufile;
wq_init_attr.cq = cq;
wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
if (IS_ERR(wq)) {
ret = PTR_ERR(wq);
goto err;
}
obj->uevent.uobject.object = wq;
wq->wq_type = wq_init_attr.wq_type;
wq->cq = cq;
wq->pd = pd;
wq->device = pd->device;
wq->wq_context = wq_init_attr.wq_context;
atomic_set(&wq->usecnt, 0);
atomic_inc(&pd->usecnt);
atomic_inc(&cq->usecnt);
wq->uobject = obj;
uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_CREATE_WQ_HANDLE);
ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR,
&wq_init_attr.max_wr,
sizeof(wq_init_attr.max_wr));
if (ret)
return ret;
ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE,
&wq_init_attr.max_sge,
sizeof(wq_init_attr.max_sge));
if (ret)
return ret;
ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM,
&wq->wq_num,
sizeof(wq->wq_num));
return ret;
err:
if (obj->uevent.event_file)
uverbs_uobject_put(&obj->uevent.event_file->uobj);
return ret;
};
DECLARE_UVERBS_NAMED_METHOD(
UVERBS_METHOD_WQ_CREATE,
UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_HANDLE,
UVERBS_OBJECT_WQ,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_CONST_IN(UVERBS_ATTR_CREATE_WQ_TYPE,
enum ib_wq_type,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_USER_HANDLE,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_MAX_WR,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_MAX_SGE,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_WQ_FLAGS,
enum ib_uverbs_wq_flags,
UA_MANDATORY),
UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_CQ_HANDLE,
UVERBS_OBJECT_CQ,
UVERBS_ACCESS_READ,
UA_OPTIONAL),
UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_WQ_EVENT_FD,
UVERBS_OBJECT_ASYNC_EVENT,
UVERBS_ACCESS_READ,
UA_OPTIONAL),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM,
UVERBS_ATTR_TYPE(u32),
UA_OPTIONAL),
UVERBS_ATTR_UHW());
static int UVERBS_HANDLER(UVERBS_METHOD_WQ_DESTROY)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj =
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_WQ_HANDLE);
struct ib_uwq_object *obj =
container_of(uobj, struct ib_uwq_object, uevent.uobject);
return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_WQ_RESP,
&obj->uevent.events_reported,
sizeof(obj->uevent.events_reported));
}
DECLARE_UVERBS_NAMED_METHOD(
UVERBS_METHOD_WQ_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_WQ_HANDLE,
UVERBS_OBJECT_WQ,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_WQ_RESP,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_WQ,
UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), uverbs_free_wq),
&UVERBS_METHOD(UVERBS_METHOD_WQ_CREATE),
&UVERBS_METHOD(UVERBS_METHOD_WQ_DESTROY)
);
const struct uapi_definition uverbs_def_obj_wq[] = {
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_WQ,
UAPI_DEF_OBJ_NEEDS_FN(destroy_wq)),
{}
};
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