[IPV6]: Add RFC4214 support
This patch includes support for the Intra-Site Automatic Tunnel
Addressing Protocol (ISATAP) per RFC4214. It uses the SIT
module, and is configured using extensions to the "iproute2"
utility. The diffs are specific to the Linux 2.6.24-rc2 kernel
distribution.
This version includes the diff for ./include/linux/if.h which was
missing in the v2.4 submission and is needed to make the
patch compile. The patch has been installed, compiled and
tested in a clean 2.6.24-rc2 kernel build area.
Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 6c8b193..f177424 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -377,6 +377,13 @@
"%s: Disabled Privacy Extensions\n",
dev->name);
ndev->cnf.use_tempaddr = -1;
+
+ if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) {
+ printk(KERN_INFO
+ "%s: Disabled Multicast RS\n",
+ dev->name);
+ ndev->cnf.rtr_solicits = 0;
+ }
} else {
in6_dev_hold(ndev);
ipv6_regen_rndid((unsigned long) ndev);
@@ -1409,6 +1416,9 @@
return addrconf_ifid_arcnet(eui, dev);
case ARPHRD_INFINIBAND:
return addrconf_ifid_infiniband(eui, dev);
+ case ARPHRD_SIT:
+ if (dev->priv_flags & IFF_ISATAP)
+ return ipv6_isatap_eui64(eui, *(__be32 *)dev->dev_addr);
}
return -1;
}
@@ -1444,7 +1454,7 @@
*
* - Reserved subnet anycast (RFC 2526)
* 11111101 11....11 1xxxxxxx
- * - ISATAP (draft-ietf-ngtrans-isatap-13.txt) 5.1
+ * - ISATAP (RFC4214) 6.1
* 00-00-5E-FE-xx-xx-xx-xx
* - value 0
* - XXX: already assigned to an address on the device
@@ -2175,6 +2185,16 @@
return;
}
+ if (dev->priv_flags & IFF_ISATAP) {
+ struct in6_addr addr;
+
+ ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
+ addrconf_prefix_route(&addr, 64, dev, 0, 0);
+ if (!ipv6_generate_eui64(addr.s6_addr + 8, dev))
+ addrconf_add_linklocal(idev, &addr);
+ return;
+ }
+
sit_add_v4_addrs(idev);
if (dev->flags&IFF_POINTOPOINT) {