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[0];
85};
86
87#endif