1 | /* |
2 | * Copyright (c) 2018, 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 RDMA_USER_IOCTL_CMDS_H |
34 | #define RDMA_USER_IOCTL_CMDS_H |
35 | |
36 | #include <linux/types.h> |
37 | #include <linux/ioctl.h> |
38 | |
39 | /* Documentation/userspace-api/ioctl/ioctl-number.rst */ |
40 | #define RDMA_IOCTL_MAGIC 0x1b |
41 | #define RDMA_VERBS_IOCTL \ |
42 | _IOWR(RDMA_IOCTL_MAGIC, 1, struct ib_uverbs_ioctl_hdr) |
43 | |
44 | enum { |
45 | /* User input */ |
46 | UVERBS_ATTR_F_MANDATORY = 1U << 0, |
47 | /* |
48 | * Valid output bit should be ignored and considered set in |
49 | * mandatory fields. This bit is kernel output. |
50 | */ |
51 | UVERBS_ATTR_F_VALID_OUTPUT = 1U << 1, |
52 | }; |
53 | |
54 | struct ib_uverbs_attr { |
55 | __u16 attr_id; /* command specific type attribute */ |
56 | __u16 len; /* only for pointers and IDRs array */ |
57 | __u16 flags; /* combination of UVERBS_ATTR_F_XXXX */ |
58 | union { |
59 | struct { |
60 | __u8 elem_id; |
61 | __u8 reserved; |
62 | } enum_data; |
63 | __u16 reserved; |
64 | } attr_data; |
65 | union { |
66 | /* |
67 | * ptr to command, inline data, idr/fd or |
68 | * ptr to __u32 array of IDRs |
69 | */ |
70 | __aligned_u64 data; |
71 | /* Used by FD_IN and FD_OUT */ |
72 | __s64 data_s64; |
73 | }; |
74 | }; |
75 | |
76 | struct ib_uverbs_ioctl_hdr { |
77 | __u16 length; |
78 | __u16 object_id; |
79 | __u16 method_id; |
80 | __u16 num_attrs; |
81 | __aligned_u64 reserved1; |
82 | __u32 driver_id; |
83 | __u32 reserved2; |
84 | struct ib_uverbs_attr attrs[]; |
85 | }; |
86 | |
87 | #endif |
88 | |