In article <[EMAIL PROTECTED]> (at Thu, 08 Nov 2007 12:41:39 -0800), osprey67
<[EMAIL PROTECTED]> says:
> From: Fred L. Templin <[EMAIL PROTECTED]>
>
> This is experimental support for the Intra-Site Automatic
> Tunnel Addressing Protocol (ISATAP) per RFC4214. It uses
> the SIT module, and is configured using the unmodified
> "ip" utility with device names beginning with: "isatap".
>
> The following diffs are specific to the Linux 2.6.24-rc2
> kernel distribution.
>
> Signed-off-by: Fred L. Templin <[EMAIL PROTECTED]>
Hmm...tabs are still mangled, and it's better to have your
official address. Anyway...
> --- linux-2.6.24-rc2/include/net/addrconf.h.orig 2007-11-08
> 12:06:17.000000000 -0800
> +++ linux-2.6.24-rc2/include/net/addrconf.h 2007-11-08 08:27:24.000000000
> -0800
> @@ -241,6 +241,37 @@ static inline int ipv6_addr_is_ll_all_ro
> addr->s6_addr32[3] == htonl(0x00000002));
> }
>
> +#if defined(CONFIG_IPV6_ISATAP)
> +static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
> +{
> +
> + /* RFC3330 Special-Use IPv4 Addresses */
> + eui[0] = (((addr & htonl(0xFF000000)) == htonl(0x00000000)) ||
> + ((addr & htonl(0xFF000000)) == htonl(0x0A000000)) ||
> + ((addr & htonl(0xFF000000)) == htonl(0x0D000000)) ||
> + ((addr & htonl(0xFF000000)) == htonl(0x18000000)) ||
> + ((addr & htonl(0xFF000000)) == htonl(0x7F000000)) ||
> + ((addr & htonl(0xFFFF0000)) == htonl(0xA9FE0000)) ||
> + ((addr & htonl(0xFFF00000)) == htonl(0xAC100000)) ||
> + ((addr & htonl(0xFFFFFF00)) == htonl(0xC0000200)) ||
> + ((addr & htonl(0xFFFFFF00)) == htonl(0xC0586300)) ||
> + ((addr & htonl(0xFFFF0000)) == htonl(0xC0A80000)) ||
> + ((addr & htonl(0xFFFE0000)) == htonl(0xC6120000)) ||
> + ((addr & htonl(0xF0000000)) == htonl(0xE0000000)) ||
> + ((addr & htonl(0xF0000000)) == htonl(0xF0000000))) ?
> + 0x00 : 0x02;
> +
> + eui[1] = 0; eui[2] = 0x5E; eui[3] = 0xFE;
> + memcpy (eui+4, &addr, 4);
> + return 0;
> +}
> +
Please put this function in net/ipv6/addrconf.c as addrconf_ifid_isatap().
Please use MULTICAST, LOCALNET etc. (and probaly introduce new macro
for others). IMHO, it's better to add a comment for each entry, e.g.,
MULTICAST(addr) || /* 224.0.0.0/4 */
instead of
((addr & htonl(0xF0000000)) == htonl(0xE0000000)) ||
> +static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
> +{
> + return ((addr->s6_addr32[2] | htonl(0x02000000)) ==
> htonl(0x02005EFE));
> +}
> +#endif
> +
ipv6_addr_isatap(), maybe (to align with ipv6_addr_any() etc.).
--yoshfuji
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