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 */ 17 enum { 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 30 enum { 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