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IB/uverbs: Introduce create/destroy WQ commands over ioctl 

Introduce create/destroy WQ commands over the ioctl interface to let it
be extended to get an asynchronous event FD.

Link: https://lore.kernel.org/r/20200519072711.257271-7-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas 2020-05-19 10:27:10 +03:00 committed by Jason Gunthorpe
parent c3eab946ab
commit ef3bc084a8
6 changed files with 223 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/core/Makefile
View File

@ -37,6 +37,7 @@ ib_uverbs-y := uverbs_main.o uverbs_cmd.o uverbs_marshall.o \
uverbs_std_types_mr.o uverbs_std_types_counters.o \
uverbs_uapi.o uverbs_std_types_device.o \
uverbs_std_types_async_fd.o \
uverbs_std_types_srq.o
uverbs_std_types_srq.o \
uverbs_std_types_wq.o
ib_uverbs-$(CONFIG_INFINIBAND_USER_MEM) += umem.o
ib_uverbs-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) += umem_odp.o

1
drivers/infiniband/core/rdma_core.h
View File

@ -160,6 +160,7 @@ extern const struct uapi_definition uverbs_def_obj_flow_action[];
extern const struct uapi_definition uverbs_def_obj_intf[];
extern const struct uapi_definition uverbs_def_obj_mr[];
extern const struct uapi_definition uverbs_def_obj_srq[];
extern const struct uapi_definition uverbs_def_obj_wq[];
extern const struct uapi_definition uverbs_def_write_intf[];
static inline const struct uverbs_api_write_method *

23
drivers/infiniband/core/uverbs_std_types.c
View File

@ -125,23 +125,6 @@ static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
return ret;
}
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(wq, &attrs->driver_udata);
if (ib_is_destroy_retryable(ret, why, uobject))
return ret;
ib_uverbs_release_uevent(&uwq->uevent);
return ret;
}
static int uverbs_free_xrcd(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
@ -266,10 +249,6 @@ DECLARE_UVERBS_NAMED_OBJECT(
uverbs_free_flow),
&UVERBS_METHOD(UVERBS_METHOD_FLOW_DESTROY));
DECLARE_UVERBS_NAMED_OBJECT(
UVERBS_OBJECT_WQ,
UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), uverbs_free_wq));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
UVERBS_METHOD_RWQ_IND_TBL_DESTROY,
UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_RWQ_IND_TBL_HANDLE,
@ -318,8 +297,6 @@ const struct uapi_definition uverbs_def_obj_intf[] = {
UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW,
UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_WQ,
UAPI_DEF_OBJ_NEEDS_FN(destroy_wq)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
UVERBS_OBJECT_RWQ_IND_TBL,
UAPI_DEF_OBJ_NEEDS_FN(destroy_rwq_ind_table)),

194
drivers/infiniband/core/uverbs_std_types_wq.c Normal file
View File

@ -0,0 +1,194 @@
// 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(wq, &attrs->driver_udata);
if (ib_is_destroy_retryable(ret, why, uobject))
return ret;
ib_uverbs_release_uevent(&uwq->uevent);
return ret;
}
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)),
{}
};

1
drivers/infiniband/core/uverbs_uapi.c
View File

@ -635,6 +635,7 @@ static const struct uapi_definition uverbs_core_api[] = {
UAPI_DEF_CHAIN(uverbs_def_obj_intf),
UAPI_DEF_CHAIN(uverbs_def_obj_mr),
UAPI_DEF_CHAIN(uverbs_def_obj_srq),
UAPI_DEF_CHAIN(uverbs_def_obj_wq),
UAPI_DEF_CHAIN(uverbs_def_write_intf),
{},
};

25
include/uapi/rdma/ib_user_ioctl_cmds.h
View File

@ -153,6 +153,31 @@ enum uverbs_methods_cq {
UVERBS_METHOD_CQ_DESTROY,
};
enum uverbs_attrs_create_wq_cmd_attr_ids {
UVERBS_ATTR_CREATE_WQ_HANDLE,
UVERBS_ATTR_CREATE_WQ_PD_HANDLE,
UVERBS_ATTR_CREATE_WQ_CQ_HANDLE,
UVERBS_ATTR_CREATE_WQ_USER_HANDLE,
UVERBS_ATTR_CREATE_WQ_TYPE,
UVERBS_ATTR_CREATE_WQ_EVENT_FD,
UVERBS_ATTR_CREATE_WQ_MAX_WR,
UVERBS_ATTR_CREATE_WQ_MAX_SGE,
UVERBS_ATTR_CREATE_WQ_FLAGS,
UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR,
UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE,
UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM,
};
enum uverbs_attrs_destroy_wq_cmd_attr_ids {
UVERBS_ATTR_DESTROY_WQ_HANDLE,
UVERBS_ATTR_DESTROY_WQ_RESP,
};
enum uverbs_methods_wq {
UVERBS_METHOD_WQ_CREATE,
UVERBS_METHOD_WQ_DESTROY,
};
enum uverbs_methods_actions_flow_action_ops {
UVERBS_METHOD_FLOW_ACTION_ESP_CREATE,
UVERBS_METHOD_FLOW_ACTION_DESTROY,