drivers/infiniband/core/uverbs_std_types_async_fd.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * Copyright (c) 2019, Mellanox Technologies inc.  All rights reserved.
   4  */
   5
   6 #include <rdma/uverbs_std_types.h>
   7 #include <rdma/uverbs_ioctl.h>
   8 #include "rdma_core.h"
   9 #include "uverbs.h"
  10
  11 static int UVERBS_HANDLER(UVERBS_METHOD_ASYNC_EVENT_ALLOC)(
  12         struct uverbs_attr_bundle *attrs)
  13 {
  14         struct ib_uobject *uobj =
  15                 uverbs_attr_get_uobject(attrs, UVERBS_METHOD_ASYNC_EVENT_ALLOC);
  16
  17         ib_uverbs_init_async_event_file(
  18                 container_of(uobj, struct ib_uverbs_async_event_file, uobj));
  19         return 0;
  20 }
  21
  22 static int uverbs_async_event_destroy_uobj(struct ib_uobject *uobj,
  23                                            enum rdma_remove_reason why)
  24 {
  25         struct ib_uverbs_async_event_file *event_file =
  26                 container_of(uobj, struct ib_uverbs_async_event_file, uobj);
  27
  28         ib_unregister_event_handler(&event_file->event_handler);
  29         ib_uverbs_free_event_queue(&event_file->ev_queue);
  30         return 0;
  31 }
  32
  33 DECLARE_UVERBS_NAMED_METHOD(
  34         UVERBS_METHOD_ASYNC_EVENT_ALLOC,
  35         UVERBS_ATTR_FD(UVERBS_ATTR_ASYNC_EVENT_ALLOC_FD_HANDLE,
  36                        UVERBS_OBJECT_ASYNC_EVENT,
  37                        UVERBS_ACCESS_NEW,
  38                        UA_MANDATORY));
  39
  40 DECLARE_UVERBS_NAMED_OBJECT(
  41         UVERBS_OBJECT_ASYNC_EVENT,
  42         UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_async_event_file),
  43                              uverbs_async_event_destroy_uobj,
  44                              &uverbs_async_event_fops,
  45                              "[infinibandevent]",
  46                              O_RDONLY),
  47         &UVERBS_METHOD(UVERBS_METHOD_ASYNC_EVENT_ALLOC));
  48
  49 const struct uapi_definition uverbs_def_obj_async_fd[] = {
  50         UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_ASYNC_EVENT),
  51         {}
  52 };