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Diffstat (limited to 'include/rdma/uverbs_std_types.h')
| -rw-r--r-- | include/rdma/uverbs_std_types.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/include/rdma/uverbs_std_types.h b/include/rdma/uverbs_std_types.h new file mode 100644 index 000000000..fe0512116 --- /dev/null +++ b/include/rdma/uverbs_std_types.h @@ -0,0 +1,178 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* + * Copyright (c) 2017, Mellanox Technologies inc. All rights reserved. + */ + +#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) ((_id) * typecheck(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) \ + rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \ + (_fdnum)*typecheck(s32, _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_DESTROY); +} + +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, false); +} + +static inline void uobj_finalize_uobj_create(struct ib_uobject *uobj, + struct uverbs_attr_bundle *attrs) +{ + /* + * Tell the core code that the write() handler has completed + * initializing the object and that the core should commit or + * abort this object based upon the return code from the write() + * method. Similar to what uverbs_finalize_uobj_create() does for + * ioctl() + */ + WARN_ON(attrs->uobject); + attrs->uobject = uobj; +} + +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 + |