Differential D31149 Diff 94461 sys/ofed/include/rdma/uverbs_std_types.h

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sys/ofed/include/rdma/uverbs_std_types.h

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				/*
				* 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.
				*/

				#ifndef _UVERBS_STD_TYPES__
				#define _UVERBS_STD_TYPES__

				#include <rdma/uverbs_types.h>
				#include <rdma/uverbs_ioctl.h>
				#include <rdma/ib_user_ioctl_verbs.h>

				/* Returns _id, or causes a compile error if _id is not a u32.
				*
				* The uobj APIs should only be used with the write based uAPI to access
				* object IDs. The write API must use a u32 for the object handle, which is
				* checked by this macro.
				*/
				#define _uobj_check_id(_id) ({ CTASSERT(sizeof(_id) == sizeof(u32)); (_id); })

				#define uobj_get_type(_attrs, _object) \
				uapi_get_object((_attrs)->ufile->device->uapi, _object)

				#define uobj_get_read(_type, _id, _attrs) \
				rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
				_uobj_check_id(_id), UVERBS_LOOKUP_READ, \
				_attrs)

				#define ufd_get_read(_type, _fdnum, _attrs) ({ \
				CTASSERT(sizeof(_fdnum) == sizeof(s32)); \
				rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
				(_fdnum), \
				UVERBS_LOOKUP_READ, _attrs); \
				})

				static inline void _uobj_get_obj_read(struct ib_uobject uobj)
				{
				if (IS_ERR(uobj))
				return NULL;
				return uobj->object;
				}
				#define uobj_get_obj_read(_object, _type, _id, _attrs) \
				((struct ib_##_object *)_uobj_get_obj_read( \
				uobj_get_read(_type, _id, _attrs)))

				#define uobj_get_write(_type, _id, _attrs) \
				rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
				_uobj_check_id(_id), UVERBS_LOOKUP_WRITE, \
				_attrs)

				int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
				struct uverbs_attr_bundle *attrs);
				#define uobj_perform_destroy(_type, _id, _attrs) \
				__uobj_perform_destroy(uobj_get_type(_attrs, _type), \
				_uobj_check_id(_id), _attrs)

				struct ib_uobject __uobj_get_destroy(const struct uverbs_api_object obj,
				u32 id, struct uverbs_attr_bundle *attrs);

				#define uobj_get_destroy(_type, _id, _attrs) \
				__uobj_get_destroy(uobj_get_type(_attrs, _type), _uobj_check_id(_id), \
				_attrs)

				static inline void uobj_put_destroy(struct ib_uobject *uobj)
				{
				rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
				}

				static inline void uobj_put_read(struct ib_uobject *uobj)
				{
				rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_READ);
				}

				#define uobj_put_obj_read(_obj) \
				uobj_put_read((_obj)->uobject)

				static inline void uobj_put_write(struct ib_uobject *uobj)
				{
				rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
				}

				static inline void uobj_alloc_abort(struct ib_uobject *uobj,
				struct uverbs_attr_bundle *attrs)
				{
				rdma_alloc_abort_uobject(uobj, attrs);
				}

				static inline struct ib_uobject *
				__uobj_alloc(const struct uverbs_api_object *obj,
				struct uverbs_attr_bundle attrs, struct ib_device *ib_dev)
				{
				struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, attrs);

				if (!IS_ERR(uobj))
				*ib_dev = attrs->context->device;
				return uobj;
				}

				#define uobj_alloc(_type, _attrs, _ib_dev) \
				__uobj_alloc(uobj_get_type(_attrs, _type), _attrs, _ib_dev)

				static inline void uverbs_flow_action_fill_action(struct ib_flow_action *action,
				struct ib_uobject *uobj,
				struct ib_device *ib_dev,
				enum ib_flow_action_type type)
				{
				atomic_set(&action->usecnt, 0);
				action->device = ib_dev;
				action->type = type;
				action->uobject = uobj;
				uobj->object = action;
				}

				struct ib_uflow_resources {
				size_t max;
				size_t num;
				size_t collection_num;
				size_t counters_num;
				struct ib_counters **counters;
				struct ib_flow_action **collection;
				};

				struct ib_uflow_object {
				struct ib_uobject uobject;
				struct ib_uflow_resources *resources;
				};

				struct ib_uflow_resources *flow_resources_alloc(size_t num_specs);
				void flow_resources_add(struct ib_uflow_resources *uflow_res,
				enum ib_flow_spec_type type,
				void *ibobj);
				void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res);

				static inline void ib_set_flow(struct ib_uobject uobj, struct ib_flow ibflow,
				struct ib_qp qp, struct ib_device device,
				struct ib_uflow_resources *uflow_res)
				{
				struct ib_uflow_object *uflow;

				uobj->object = ibflow;
				ibflow->uobject = uobj;

				if (qp) {
				atomic_inc(&qp->usecnt);
				ibflow->qp = qp;
				}

				ibflow->device = device;
				uflow = container_of(uobj, typeof(*uflow), uobject);
				uflow->resources = uflow_res;
				}

				struct uverbs_api_object {
				const struct uverbs_obj_type *type_attrs;
				const struct uverbs_obj_type_class *type_class;
				u8 disabled:1;
				u32 id;
				};

				static inline u32 uobj_get_object_id(struct ib_uobject *uobj)
				{
				return uobj->uapi_object->id;
				}

				#endif