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| author | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
|---|---|---|
| committer | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
| commit | 41710e1b810aa25c14ceb657a40b9ba616615435 (patch) | |
| tree | 4953322c9930fde10dae9ff057de28827e87fb52 /ebpf/include/linux/rpl.h | |
| parent | 4a51050c498da33eaecb520b78aeb5f445a442f1 (diff) | |
| download | tailscale-danderson/ebpf.tar.xz tailscale-danderson/ebpf.zip | |
ebpf: experiments.danderson/ebpf
Diffstat (limited to 'ebpf/include/linux/rpl.h')
| -rw-r--r-- | ebpf/include/linux/rpl.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/ebpf/include/linux/rpl.h b/ebpf/include/linux/rpl.h new file mode 100644 index 000000000..72d60e096 --- /dev/null +++ b/ebpf/include/linux/rpl.h @@ -0,0 +1,48 @@ +/* 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 |