blob: 1a68eca7c6b48ee5ed8b98b13e18ae0ee3910ee1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
/*
* Header file for the io_uring query interface.
*
* Copyright (C) 2026 Pavel Begunkov <asml.silence@gmail.com>
* Copyright (C) Meta Platforms, Inc.
*/
#ifndef LINUX_IO_URING_QUERY_H
#define LINUX_IO_URING_QUERY_H
#include <linux/types.h>
struct io_uring_query_hdr {
__u64 next_entry;
__u64 query_data;
__u32 query_op;
__u32 size;
__s32 result;
__u32 __resv[3];
};
enum {
IO_URING_QUERY_OPCODES = 0,
IO_URING_QUERY_ZCRX = 1,
IO_URING_QUERY_SCQ = 2,
IO_URING_QUERY_ZCRX_NOTIF = 3,
__IO_URING_QUERY_MAX,
};
/* Doesn't require a ring */
struct io_uring_query_opcode {
/* The number of supported IORING_OP_* opcodes */
__u32 nr_request_opcodes;
/* The number of supported IORING_[UN]REGISTER_* opcodes */
__u32 nr_register_opcodes;
/* Bitmask of all supported IORING_FEAT_* flags */
__u64 feature_flags;
/* Bitmask of all supported IORING_SETUP_* flags */
__u64 ring_setup_flags;
/* Bitmask of all supported IORING_ENTER_** flags */
__u64 enter_flags;
/* Bitmask of all supported IOSQE_* flags */
__u64 sqe_flags;
/* The number of available query opcodes */
__u32 nr_query_opcodes;
__u32 __pad;
};
struct io_uring_query_zcrx {
/* Bitmask of supported ZCRX_REG_* flags, */
__u64 register_flags;
/* Bitmask of all supported IORING_ZCRX_AREA_* flags */
__u64 area_flags;
/* The number of supported ZCRX_CTRL_* opcodes */
__u32 nr_ctrl_opcodes;
/* Bitmask of ZCRX_FEATURE_* indicating which features are available */
__u32 features;
/* The refill ring header size */
__u32 rq_hdr_size;
/* The alignment for the header */
__u32 rq_hdr_alignment;
__u64 __resv2;
};
struct io_uring_query_zcrx_notif {
/* Bitmask of supported ZCRX_NOTIF_* flags */
__u32 notif_flags;
/* Size of io_uring_zcrx_notif_stats */
__u32 notif_stats_size;
/* Required alignment for the stats struct within the region (ie stats_offset) */
__u32 notif_stats_off_alignment;
__u32 __resv1;
__u64 __resv2[4];
};
struct io_uring_query_scq {
/* The SQ/CQ rings header size */
__u64 hdr_size;
/* The alignment for the header */
__u64 hdr_alignment;
};
#endif
|
