[U-Boot] [RFC PATCH v3 1/7] Initial net6.h

[Chris Packham]

From: Chris Packham <chris.packham at alliedtelesis.co.nz>

Has the definition of an IPv6 address and IPv6 header. It may make sense
to separate the v4 support from net.h (or to include this in net.h).

Signed-off-by: Chris Packham <chris.packham at alliedtelesis.co.nz>

---
Changes in v3:
- add reviewed-by from Kim Phillips
Changes in v2:
- use __be16/__be32
- add ipv6_addr_v4mapped and ipv6_addr_is_isatap inline functions

 include/net6.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 include/net6.h

diff --git a/include/net6.h b/include/net6.h
new file mode 100644
index 0000000..03bccb2
--- /dev/null
+++ b/include/net6.h
@@ -0,0 +1,43 @@
+/**
+ * Simple IPv6 network layer implementation.
+ *
+ * Based and/or adapted from the IPv4 network layer in net.[hc]
+ *
+ * (C) Copyright 2013 Allied Telesis Labs NZ
+ *
+ * This file is released under the terms of GPL v2 and any later version.
+ * See the file COPYING in the root directory of the source tree for details.
+ */
+#ifndef __NET6_H__
+#define __NET6_H__
+
+typedef union ip6addr_t {
+	__u8	u6_addr8[16];
+	__be16	u6_addr16[8];
+	__be32	u6_addr32[4];
+} IP6addr_t;
+
+/**
+ * struct ipv6hdr - Internet Protocol V6 (IPv6) header.
+ *
+ * IPv6 packet header as defined in RFC 2460.
+ */
+struct ip6_hdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	__u8    priority:4,
+		version:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	__u8    version:4,
+		priority:4;
+#else
+#error  "Please fix <asm/byteorder.h>"
+#endif
+	__u8		flow_lbl[3];
+	__be16		payload_len;
+	__u8		nexthdr;
+	__u8		hop_limit;
+	IP6addr_t	saddr;
+	IP6addr_t	daddr;
+};
+
+#endif /* __NET6_H__ */
-- 
1.7.12.rc2.16.g034161a