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
44enum {
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
54struct 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
76struct 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