1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linu 1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /* 2 /*
3 * IPv6 IOAM implementation 3 * IPv6 IOAM implementation
4 * 4 *
5 * Author: 5 * Author:
6 * Justin Iurman <justin.iurman@uliege.be> 6 * Justin Iurman <justin.iurman@uliege.be>
7 */ 7 */
8 8
9 #ifndef _UAPI_LINUX_IOAM6_H 9 #ifndef _UAPI_LINUX_IOAM6_H
10 #define _UAPI_LINUX_IOAM6_H 10 #define _UAPI_LINUX_IOAM6_H
11 11
12 #include <asm/byteorder.h> 12 #include <asm/byteorder.h>
13 #include <linux/types.h> 13 #include <linux/types.h>
14 14
15 #define IOAM6_U16_UNAVAILABLE U16_MAX 15 #define IOAM6_U16_UNAVAILABLE U16_MAX
16 #define IOAM6_U32_UNAVAILABLE U32_MAX 16 #define IOAM6_U32_UNAVAILABLE U32_MAX
17 #define IOAM6_U64_UNAVAILABLE U64_MAX 17 #define IOAM6_U64_UNAVAILABLE U64_MAX
18 18
19 #define IOAM6_DEFAULT_ID (IOAM6_U32_UNAVAILABL 19 #define IOAM6_DEFAULT_ID (IOAM6_U32_UNAVAILABLE >> 8)
20 #define IOAM6_DEFAULT_ID_WIDE (IOAM6_U64_UNAVA 20 #define IOAM6_DEFAULT_ID_WIDE (IOAM6_U64_UNAVAILABLE >> 8)
21 #define IOAM6_DEFAULT_IF_ID IOAM6_U16_UNAVAILA 21 #define IOAM6_DEFAULT_IF_ID IOAM6_U16_UNAVAILABLE
22 #define IOAM6_DEFAULT_IF_ID_WIDE IOAM6_U32_UNA 22 #define IOAM6_DEFAULT_IF_ID_WIDE IOAM6_U32_UNAVAILABLE
23 23
24 /* 24 /*
25 * IPv6 IOAM Option Header 25 * IPv6 IOAM Option Header
26 */ 26 */
27 struct ioam6_hdr { 27 struct ioam6_hdr {
28 __u8 opt_type; 28 __u8 opt_type;
29 __u8 opt_len; 29 __u8 opt_len;
30 __u8 :8; 30 __u8 :8; /* reserved */
31 #define IOAM6_TYPE_PREALLOC 0 31 #define IOAM6_TYPE_PREALLOC 0
32 __u8 type; 32 __u8 type;
33 } __attribute__((packed)); 33 } __attribute__((packed));
34 34
35 /* 35 /*
36 * IOAM Trace Header 36 * IOAM Trace Header
37 */ 37 */
38 struct ioam6_trace_hdr { 38 struct ioam6_trace_hdr {
39 __be16 namespace_id; 39 __be16 namespace_id;
40 40
41 #if defined(__LITTLE_ENDIAN_BITFIELD) 41 #if defined(__LITTLE_ENDIAN_BITFIELD)
42 42
43 __u8 :1, 43 __u8 :1, /* unused */
44 :1, 44 :1, /* unused */
45 overflow:1, 45 overflow:1,
46 nodelen:5; 46 nodelen:5;
47 47
48 __u8 remlen:7, 48 __u8 remlen:7,
49 :1; 49 :1; /* unused */
50 50
51 union { 51 union {
52 __be32 type_be32; 52 __be32 type_be32;
53 53
54 struct { 54 struct {
55 __u32 bit7:1, 55 __u32 bit7:1,
56 bit6:1, 56 bit6:1,
57 bit5:1, 57 bit5:1,
58 bit4:1, 58 bit4:1,
59 bit3:1, 59 bit3:1,
60 bit2:1, 60 bit2:1,
61 bit1:1, 61 bit1:1,
62 bit0:1, 62 bit0:1,
63 bit15:1, 63 bit15:1, /* unused */
64 bit14:1, 64 bit14:1, /* unused */
65 bit13:1, 65 bit13:1, /* unused */
66 bit12:1, 66 bit12:1, /* unused */
67 bit11:1, 67 bit11:1,
68 bit10:1, 68 bit10:1,
69 bit9:1, 69 bit9:1,
70 bit8:1, 70 bit8:1,
71 bit23:1, 71 bit23:1, /* reserved */
72 bit22:1, 72 bit22:1,
73 bit21:1, 73 bit21:1, /* unused */
74 bit20:1, 74 bit20:1, /* unused */
75 bit19:1, 75 bit19:1, /* unused */
76 bit18:1, 76 bit18:1, /* unused */
77 bit17:1, 77 bit17:1, /* unused */
78 bit16:1, 78 bit16:1, /* unused */
79 :8; 79 :8; /* reserved */
80 } type; 80 } type;
81 }; 81 };
82 82
83 #elif defined(__BIG_ENDIAN_BITFIELD) 83 #elif defined(__BIG_ENDIAN_BITFIELD)
84 84
85 __u8 nodelen:5, 85 __u8 nodelen:5,
86 overflow:1, 86 overflow:1,
87 :1, 87 :1, /* unused */
88 :1; 88 :1; /* unused */
89 89
90 __u8 :1, 90 __u8 :1, /* unused */
91 remlen:7; 91 remlen:7;
92 92
93 union { 93 union {
94 __be32 type_be32; 94 __be32 type_be32;
95 95
96 struct { 96 struct {
97 __u32 bit0:1, 97 __u32 bit0:1,
98 bit1:1, 98 bit1:1,
99 bit2:1, 99 bit2:1,
100 bit3:1, 100 bit3:1,
101 bit4:1, 101 bit4:1,
102 bit5:1, 102 bit5:1,
103 bit6:1, 103 bit6:1,
104 bit7:1, 104 bit7:1,
105 bit8:1, 105 bit8:1,
106 bit9:1, 106 bit9:1,
107 bit10:1, 107 bit10:1,
108 bit11:1, 108 bit11:1,
109 bit12:1, 109 bit12:1, /* unused */
110 bit13:1, 110 bit13:1, /* unused */
111 bit14:1, 111 bit14:1, /* unused */
112 bit15:1, 112 bit15:1, /* unused */
113 bit16:1, 113 bit16:1, /* unused */
114 bit17:1, 114 bit17:1, /* unused */
115 bit18:1, 115 bit18:1, /* unused */
116 bit19:1, 116 bit19:1, /* unused */
117 bit20:1, 117 bit20:1, /* unused */
118 bit21:1, 118 bit21:1, /* unused */
119 bit22:1, 119 bit22:1,
120 bit23:1, 120 bit23:1, /* reserved */
121 :8; 121 :8; /* reserved */
122 } type; 122 } type;
123 }; 123 };
124 124
125 #else 125 #else
126 #error "Please fix <asm/byteorder.h>" 126 #error "Please fix <asm/byteorder.h>"
127 #endif 127 #endif
128 128
129 #define IOAM6_TRACE_DATA_SIZE_MAX 244 129 #define IOAM6_TRACE_DATA_SIZE_MAX 244
130 __u8 data[]; 130 __u8 data[];
131 } __attribute__((packed)); 131 } __attribute__((packed));
132 132
133 #endif /* _UAPI_LINUX_IOAM6_H */ 133 #endif /* _UAPI_LINUX_IOAM6_H */
134 134
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