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 #if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
41 const struct uverbs_object_tree_def *uverbs_default_get_objects(void);
42 #else
uverbs_default_get_objects(void)43 static inline const struct uverbs_object_tree_def *uverbs_default_get_objects(void)
44 {
45 return NULL;
46 }
47 #endif
48
49 /* Returns _id, or causes a compile error if _id is not a u32.
50 *
51 * The uobj APIs should only be used with the write based uAPI to access
52 * object IDs. The write API must use a u32 for the object handle, which is
53 * checked by this macro.
54 */
55 #define _uobj_check_id(_id) ((_id) * typecheck(u32, _id))
56
57 #define uobj_get_type(_ufile, _object) \
58 uapi_get_object((_ufile)->device->uapi, _object)
59
60 #define uobj_get_read(_type, _id, _ufile) \
61 rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
62 _uobj_check_id(_id), UVERBS_LOOKUP_READ)
63
64 #define ufd_get_read(_type, _fdnum, _ufile) \
65 rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
66 (_fdnum)*typecheck(s32, _fdnum), \
67 UVERBS_LOOKUP_READ)
68
_uobj_get_obj_read(struct ib_uobject * uobj)69 static inline void *_uobj_get_obj_read(struct ib_uobject *uobj)
70 {
71 if (IS_ERR(uobj))
72 return NULL;
73 return uobj->object;
74 }
75 #define uobj_get_obj_read(_object, _type, _id, _ufile) \
76 ((struct ib_##_object *)_uobj_get_obj_read( \
77 uobj_get_read(_type, _id, _ufile)))
78
79 #define uobj_get_write(_type, _id, _ufile) \
80 rdma_lookup_get_uobject(uobj_get_type(_ufile, _type), _ufile, \
81 _uobj_check_id(_id), UVERBS_LOOKUP_WRITE)
82
83 int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
84 struct ib_uverbs_file *ufile, int success_res);
85 #define uobj_perform_destroy(_type, _id, _ufile, _success_res) \
86 __uobj_perform_destroy(uobj_get_type(_ufile, _type), \
87 _uobj_check_id(_id), _ufile, _success_res)
88
89 struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj,
90 u32 id, struct ib_uverbs_file *ufile);
91
92 #define uobj_get_destroy(_type, _id, _ufile) \
93 __uobj_get_destroy(uobj_get_type(_ufile, _type), _uobj_check_id(_id), \
94 _ufile)
95
uobj_put_destroy(struct ib_uobject * uobj)96 static inline void uobj_put_destroy(struct ib_uobject *uobj)
97 {
98 rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
99 }
100
uobj_put_read(struct ib_uobject * uobj)101 static inline void uobj_put_read(struct ib_uobject *uobj)
102 {
103 rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_READ);
104 }
105
106 #define uobj_put_obj_read(_obj) \
107 uobj_put_read((_obj)->uobject)
108
uobj_put_write(struct ib_uobject * uobj)109 static inline void uobj_put_write(struct ib_uobject *uobj)
110 {
111 rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
112 }
113
uobj_alloc_commit(struct ib_uobject * uobj,int success_res)114 static inline int __must_check uobj_alloc_commit(struct ib_uobject *uobj,
115 int success_res)
116 {
117 int ret = rdma_alloc_commit_uobject(uobj);
118
119 if (ret)
120 return ret;
121 return success_res;
122 }
123
uobj_alloc_abort(struct ib_uobject * uobj)124 static inline void uobj_alloc_abort(struct ib_uobject *uobj)
125 {
126 rdma_alloc_abort_uobject(uobj);
127 }
128
129 static inline struct ib_uobject *
__uobj_alloc(const struct uverbs_api_object * obj,struct ib_uverbs_file * ufile,struct ib_device ** ib_dev)130 __uobj_alloc(const struct uverbs_api_object *obj, struct ib_uverbs_file *ufile,
131 struct ib_device **ib_dev)
132 {
133 struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, ufile);
134
135 if (!IS_ERR(uobj))
136 *ib_dev = uobj->context->device;
137 return uobj;
138 }
139
140 #define uobj_alloc(_type, _ufile, _ib_dev) \
141 __uobj_alloc(uobj_get_type(_ufile, _type), _ufile, _ib_dev)
142
143 #endif
144
145
