uverbs_std_types.h

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    1 /*
    2  * Copyright (c) 2017, Mellanox Technologies inc.  All rights reserved.
    3  *
    4  * This software is available to you under a choice of one of two
    5  * licenses.  You may choose to be licensed under the terms of the GNU
    6  * General Public License (GPL) Version 2, available from the file
    7  * COPYING in the main directory of this source tree, or the
    8  * OpenIB.org BSD license below:
    9  *
   10  *     Redistribution and use in source and binary forms, with or
   11  *     without modification, are permitted provided that the following
   12  *     conditions are met:
   13  *
   14  *      - Redistributions of source code must retain the above
   15  *        copyright notice, this list of conditions and the following
   16  *        disclaimer.
   17  *
   18  *      - Redistributions in binary form must reproduce the above
   19  *        copyright notice, this list of conditions and the following
   20  *        disclaimer in the documentation and/or other materials
   21  *        provided with the distribution.
   22  *
   23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   30  * SOFTWARE.
   31  */
   32 
   33 #ifndef _UVERBS_STD_TYPES__
   34 #define _UVERBS_STD_TYPES__
   35 
   36 #include <rdma/uverbs_types.h>
   37 #include <rdma/uverbs_ioctl.h>
   38 #include <rdma/ib_user_ioctl_verbs.h>
   39 
   40 /* Returns _id, or causes a compile error if _id is not a u32.
   41  *
   42  * The uobj APIs should only be used with the write based uAPI to access
   43  * object IDs. The write API must use a u32 for the object handle, which is
   44  * checked by this macro.
   45  */
   46 #define _uobj_check_id(_id) ({ CTASSERT(sizeof(_id) == sizeof(u32)); (_id); })
   47 
   48 #define uobj_get_type(_attrs, _object)                                         \
   49         uapi_get_object((_attrs)->ufile->device->uapi, _object)
   50 
   51 #define uobj_get_read(_type, _id, _attrs)                                      \
   52         rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
   53                                 _uobj_check_id(_id), UVERBS_LOOKUP_READ,       \
   54                                 _attrs)
   55 
   56 #define ufd_get_read(_type, _fdnum, _attrs) ({                                 \
   57         CTASSERT(sizeof(_fdnum) == sizeof(s32));                               \
   58         rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
   59                                 (_fdnum),                                      \
   60                                 UVERBS_LOOKUP_READ, _attrs);                   \
   61 })
   62 
   63 static inline void *_uobj_get_obj_read(struct ib_uobject *uobj)
   64 {
   65         if (IS_ERR(uobj))
   66                 return NULL;
   67         return uobj->object;
   68 }
   69 #define uobj_get_obj_read(_object, _type, _id, _attrs)                         \
   70         ((struct ib_##_object *)_uobj_get_obj_read(                            \
   71                 uobj_get_read(_type, _id, _attrs)))
   72 
   73 #define uobj_get_write(_type, _id, _attrs)                                     \
   74         rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
   75                                 _uobj_check_id(_id), UVERBS_LOOKUP_WRITE,      \
   76                                 _attrs)
   77 
   78 int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
   79                            struct uverbs_attr_bundle *attrs);
   80 #define uobj_perform_destroy(_type, _id, _attrs)                               \
   81         __uobj_perform_destroy(uobj_get_type(_attrs, _type),                   \
   82                                _uobj_check_id(_id), _attrs)
   83 
   84 struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj,
   85                                       u32 id, struct uverbs_attr_bundle *attrs);
   86 
   87 #define uobj_get_destroy(_type, _id, _attrs)                                   \
   88         __uobj_get_destroy(uobj_get_type(_attrs, _type), _uobj_check_id(_id),  \
   89                            _attrs)
   90 
   91 static inline void uobj_put_destroy(struct ib_uobject *uobj)
   92 {
   93         rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
   94 }
   95 
   96 static inline void uobj_put_read(struct ib_uobject *uobj)
   97 {
   98         rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_READ);
   99 }
  100 
  101 #define uobj_put_obj_read(_obj)                                 \
  102         uobj_put_read((_obj)->uobject)
  103 
  104 static inline void uobj_put_write(struct ib_uobject *uobj)
  105 {
  106         rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
  107 }
  108 
  109 static inline void uobj_alloc_abort(struct ib_uobject *uobj,
  110                                     struct uverbs_attr_bundle *attrs)
  111 {
  112         rdma_alloc_abort_uobject(uobj, attrs);
  113 }
  114 
  115 static inline struct ib_uobject *
  116 __uobj_alloc(const struct uverbs_api_object *obj,
  117              struct uverbs_attr_bundle *attrs, struct ib_device **ib_dev)
  118 {
  119         struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, attrs);
  120 
  121         if (!IS_ERR(uobj))
  122                 *ib_dev = attrs->context->device;
  123         return uobj;
  124 }
  125 
  126 #define uobj_alloc(_type, _attrs, _ib_dev)                                     \
  127         __uobj_alloc(uobj_get_type(_attrs, _type), _attrs, _ib_dev)
  128 
  129 static inline void uverbs_flow_action_fill_action(struct ib_flow_action *action,
  130                                                   struct ib_uobject *uobj,
  131                                                   struct ib_device *ib_dev,
  132                                                   enum ib_flow_action_type type)
  133 {
  134         atomic_set(&action->usecnt, 0);
  135         action->device = ib_dev;
  136         action->type = type;
  137         action->uobject = uobj;
  138         uobj->object = action;
  139 }
  140 
  141 struct ib_uflow_resources {
  142         size_t                  max;
  143         size_t                  num;
  144         size_t                  collection_num;
  145         size_t                  counters_num;
  146         struct ib_counters      **counters;
  147         struct ib_flow_action   **collection;
  148 };
  149 
  150 struct ib_uflow_object {
  151         struct ib_uobject               uobject;
  152         struct ib_uflow_resources       *resources;
  153 };
  154 
  155 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs);
  156 void flow_resources_add(struct ib_uflow_resources *uflow_res,
  157                         enum ib_flow_spec_type type,
  158                         void *ibobj);
  159 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res);
  160 
  161 static inline void ib_set_flow(struct ib_uobject *uobj, struct ib_flow *ibflow,
  162                                struct ib_qp *qp, struct ib_device *device,
  163                                struct ib_uflow_resources *uflow_res)
  164 {
  165         struct ib_uflow_object *uflow;
  166 
  167         uobj->object = ibflow;
  168         ibflow->uobject = uobj;
  169 
  170         if (qp) {
  171                 atomic_inc(&qp->usecnt);
  172                 ibflow->qp = qp;
  173         }
  174 
  175         ibflow->device = device;
  176         uflow = container_of(uobj, typeof(*uflow), uobject);
  177         uflow->resources = uflow_res;
  178 }
  179 
  180 struct uverbs_api_object {
  181         const struct uverbs_obj_type *type_attrs;
  182         const struct uverbs_obj_type_class *type_class;
  183         u8 disabled:1;
  184         u32 id;
  185 };
  186 
  187 static inline u32 uobj_get_object_id(struct ib_uobject *uobj)
  188 {
  189         return uobj->uapi_object->id;
  190 }
  191 
  192 #endif
  193

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FreeBSD/Linux Kernel Cross Reference sys/ofed/include/rdma/uverbs_std_types.h

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sys/ofed/include/rdma/uverbs_std_types.h