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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* IPv6 IOAM implementation
*
* Author:
* Justin Iurman <justin.iurman@uliege.be>
*/
#ifndef _LINUX_IOAM6_H
#define _LINUX_IOAM6_H
#include <asm/byteorder.h>
#include <linux/types.h>
#define IOAM6_U16_UNAVAILABLE U16_MAX
#define IOAM6_U32_UNAVAILABLE U32_MAX
#define IOAM6_U64_UNAVAILABLE U64_MAX
#define IOAM6_DEFAULT_ID (IOAM6_U32_UNAVAILABLE >> 8)
#define IOAM6_DEFAULT_ID_WIDE (IOAM6_U64_UNAVAILABLE >> 8)
#define IOAM6_DEFAULT_IF_ID IOAM6_U16_UNAVAILABLE
#define IOAM6_DEFAULT_IF_ID_WIDE IOAM6_U32_UNAVAILABLE
/*
* IPv6 IOAM Option Header
*/
struct ioam6_hdr {
__u8 opt_type;
__u8 opt_len;
__u8 :8; /* reserved */
#define IOAM6_TYPE_PREALLOC 0
__u8 type;
} __attribute__((packed));
/*
* IOAM Trace Header
*/
struct ioam6_trace_hdr {
__be16 namespace_id;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 :1, /* unused */
:1, /* unused */
overflow:1,
nodelen:5;
__u8 remlen:7,
:1; /* unused */
union {
__be32 type_be32;
struct {
__u32 bit7:1,
bit6:1,
bit5:1,
bit4:1,
bit3:1,
bit2:1,
bit1:1,
bit0:1,
bit15:1, /* unused */
bit14:1, /* unused */
bit13:1, /* unused */
bit12:1, /* unused */
bit11:1,
bit10:1,
bit9:1,
bit8:1,
bit23:1, /* reserved */
bit22:1,
bit21:1, /* unused */
bit20:1, /* unused */
bit19:1, /* unused */
bit18:1, /* unused */
bit17:1, /* unused */
bit16:1, /* unused */
:8; /* reserved */
} type;
};
#elif defined(__BIG_ENDIAN_BITFIELD)
__u8 nodelen:5,
overflow:1,
:1, /* unused */
:1; /* unused */
__u8 :1, /* unused */
remlen:7;
union {
__be32 type_be32;
struct {
__u32 bit0:1,
bit1:1,
bit2:1,
bit3:1,
bit4:1,
bit5:1,
bit6:1,
bit7:1,
bit8:1,
bit9:1,
bit10:1,
bit11:1,
bit12:1, /* unused */
bit13:1, /* unused */
bit14:1, /* unused */
bit15:1, /* unused */
bit16:1, /* unused */
bit17:1, /* unused */
bit18:1, /* unused */
bit19:1, /* unused */
bit20:1, /* unused */
bit21:1, /* unused */
bit22:1,
bit23:1, /* reserved */
:8; /* reserved */
} type;
};
#else
#error "Please fix <asm/byteorder.h>"
#endif
#define IOAM6_TRACE_DATA_SIZE_MAX 244
__u8 data[];
} __attribute__((packed));
#endif /* _LINUX_IOAM6_H */
|
