From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 7 Dec 2025 20:10:31 +0100
Subject: Add build system scaffolding and libc headers

---
 include/arch/x86_64/linux/rpl.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 include/arch/x86_64/linux/rpl.h

(limited to 'include/arch/x86_64/linux/rpl.h')

diff --git a/include/arch/x86_64/linux/rpl.h b/include/arch/x86_64/linux/rpl.h
new file mode 100644
index 00000000..c934a9ca
--- /dev/null
+++ b/include/arch/x86_64/linux/rpl.h
@@ -0,0 +1,41 @@
+/* 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 {
+		__DECLARE_FLEX_ARRAY(struct in6_addr, addr);
+		__DECLARE_FLEX_ARRAY(__u8, data);
+	} segments;
+} __attribute__((packed));
+
+#define rpl_segaddr segments.addr
+#define rpl_segdata segments.data
+
+#endif
-- 
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