1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 *  IPv6 IOAM Lightweight Tunnel API
4 *
5 *  Author:
6 *  Justin Iurman <justin.iurman@uliege.be>
7 */
8
9#ifndef _UAPI_LINUX_IOAM6_IPTUNNEL_H
10#define _UAPI_LINUX_IOAM6_IPTUNNEL_H
11
12/* Encap modes:
13 *  - inline: direct insertion
14 *  - encap: ip6ip6 encapsulation
15 *  - auto: inline for local packets, encap for in-transit packets
16 */
17enum {
18	__IOAM6_IPTUNNEL_MODE_MIN,
19
20	IOAM6_IPTUNNEL_MODE_INLINE,
21	IOAM6_IPTUNNEL_MODE_ENCAP,
22	IOAM6_IPTUNNEL_MODE_AUTO,
23
24	__IOAM6_IPTUNNEL_MODE_MAX,
25};
26
27#define IOAM6_IPTUNNEL_MODE_MIN (__IOAM6_IPTUNNEL_MODE_MIN + 1)
28#define IOAM6_IPTUNNEL_MODE_MAX (__IOAM6_IPTUNNEL_MODE_MAX - 1)
29
30enum {
31	IOAM6_IPTUNNEL_UNSPEC,
32
33	/* Encap mode */
34	IOAM6_IPTUNNEL_MODE,		/* u8 */
35
36	/* Tunnel dst address.
37	 * For encap,auto modes.
38	 */
39	IOAM6_IPTUNNEL_DST,		/* struct in6_addr */
40
41	/* IOAM Trace Header */
42	IOAM6_IPTUNNEL_TRACE,		/* struct ioam6_trace_hdr */
43
44	/* Insertion frequency:
45	 * "k over n" packets (0 < k <= n)
46	 * [0.0001% ... 100%]
47	 */
48#define IOAM6_IPTUNNEL_FREQ_MIN 1
49#define IOAM6_IPTUNNEL_FREQ_MAX 1000000
50	IOAM6_IPTUNNEL_FREQ_K,		/* u32 */
51	IOAM6_IPTUNNEL_FREQ_N,		/* u32 */
52
53	__IOAM6_IPTUNNEL_MAX,
54};
55
56#define IOAM6_IPTUNNEL_MAX (__IOAM6_IPTUNNEL_MAX - 1)
57
58#endif /* _UAPI_LINUX_IOAM6_IPTUNNEL_H */
59