| 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * IPv6 RPL-SR implementation |
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| 4 | * |
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| 5 | * Author: |
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| 6 | * (C) 2020 Alexander Aring <alex.aring@gmail.com> |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef _UAPI_LINUX_RPL_H |
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| 10 | #define _UAPI_LINUX_RPL_H |
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| 11 | |
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| 12 | #include <asm/byteorder.h> |
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| 13 | #include <linux/types.h> |
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| 14 | #include <linux/in6.h> |
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| 15 | |
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| 16 | /* |
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| 17 | * RPL SR Header |
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| 18 | */ |
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| 19 | struct ipv6_rpl_sr_hdr { |
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| 20 | __u8 nexthdr; |
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| 21 | __u8 hdrlen; |
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| 22 | __u8 type; |
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| 23 | __u8 segments_left; |
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| 24 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
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| 25 | __u32 cmpre:4, |
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| 26 | cmpri:4, |
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| 27 | reserved:4, |
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| 28 | pad:4, |
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| 29 | reserved1:16; |
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| 30 | #elif defined(__BIG_ENDIAN_BITFIELD) |
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| 31 | __u32 cmpri:4, |
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| 32 | cmpre:4, |
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| 33 | pad:4, |
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| 34 | reserved:20; |
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| 35 | #else |
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| 36 | #error "Please fix <asm/byteorder.h>" |
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| 37 | #endif |
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| 38 | |
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| 39 | union { |
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| 40 | __DECLARE_FLEX_ARRAY(struct in6_addr, addr); |
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| 41 | __DECLARE_FLEX_ARRAY(__u8, data); |
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| 42 | } segments; |
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| 43 | } __attribute__((packed)); |
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| 44 | |
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| 45 | #define rpl_segaddr segments.addr |
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| 46 | #define rpl_segdata segments.data |
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| 47 | |
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| 48 | #endif |
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| 49 | |
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