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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * IPv6 RPL-SR implementation * * Author: * (C) 2020 Alexander Aring <alex.aring@gmail.com> */ #ifndef _LINUX_RPL_H #define _LINUX_RPL_H #include <asm/byteorder.h> #include <linux/types.h> #include <linux/in6.h> /* * RPL SR Header */ struct ipv6_rpl_sr_hdr { __u8 nexthdr; __u8 hdrlen; __u8 type; __u8 segments_left; #if defined(__LITTLE_ENDIAN_BITFIELD) __u32 cmpre:4, cmpri:4, reserved:4, pad:4, reserved1:16; #elif defined(__BIG_ENDIAN_BITFIELD) __u32 cmpri:4, cmpre:4, pad:4, reserved:20; #else #error "Please fix <asm/byteorder.h>" #endif union { struct in6_addr addr[0]; __u8 data[0]; } segments; } __attribute__((packed)); #define rpl_segaddr segments.addr #define rpl_segdata segments.data #endif