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
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; +}; +