Patchwork [U-Boot,RFC,1/2] Initial net6.h

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Submitter Chris Packham
Date Jan. 16, 2013, 10:01 a.m.
Message ID <1358330487-18955-2-git-send-email-judge.packham@gmail.com>
Download mbox | patch
Permalink /patch/212468/
State RFC
Headers show

Comments

Chris Packham - Jan. 16, 2013, 10:01 a.m.
From: Chris Packham <chris.packham@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).

Cc: Joe Hershberger <joe.hershberger@gmail.com>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
 include/net6.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 include/net6.h
Kim Phillips - Jan. 16, 2013, 10:37 p.m.
On Wed, 16 Jan 2013 23:01:26 +1300
Chris Packham <judge.packham@gmail.com> wrote:

> +typedef union ip6addr_t {
> +	__u8	u6_addr8[16];
> +	__u16	u6_addr16[8];

__be16, for use with sparse.

> +	__u32	u6_addr32[4];

__be32

> +} IP6addr_t;

Kim

Patch

diff --git a/include/net6.h b/include/net6.h
new file mode 100644
index 0000000..2ef7405
--- /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.
+ */
+
+typedef union ip6addr_t {
+	__u8	u6_addr8[16];
+	__u16	u6_addr16[8];
+	__u32	u6_addr32[4];
+} IP6addr_t;
+
+/**
+ * struct ipv6hdr - Internet Protocol V6 (IPv6) header.
+ *
+ * IPv6 packet header as defined in RFC xxxx.
+ *
+ * BEWARE, it is incorrect. The first 4 bits of flow_lbl
+ * are glued to priority now, forming "class".
+ */
+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];
+	__u16		payload_len;
+	__u8		nexthdr;
+	__u8		hop_limit;
+	IP6addr_t	saddr;
+	IP6addr_t	daddr;
+};
+