6lowpan: IPv6 link local address
According to the RFC4944 (Transmission of IPv6 Packets over
IEEE 802.15.4 Networks), chapter 7:
The IPv6 link-local address [RFC4291] for an IEEE 802.15.4 interface
is formed by appending the Interface Identifier, as defined above, to
the prefix FE80::/64.
10 bits 54 bits 64 bits
+----------+-----------------------+----------------------------+
|1111111010| (zeros) | Interface Identifier |
+----------+-----------------------+----------------------------+
This patch adds IPv6 address generation support for the 6lowpan
interfaces.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e3b3421..8b7f100 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -66,6 +66,7 @@
#include <net/sock.h>
#include <net/snmp.h>
+#include <net/af_ieee802154.h>
#include <net/ipv6.h>
#include <net/protocol.h>
#include <net/ndisc.h>
@@ -1514,6 +1515,14 @@
return 0;
}
+static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev)
+{
+ if (dev->addr_len != IEEE802154_ADDR_LEN)
+ return -1;
+ memcpy(eui, dev->dev_addr, 8);
+ return 0;
+}
+
static int addrconf_ifid_arcnet(u8 *eui, struct net_device *dev)
{
/* XXX: inherit EUI-64 from other interface -- yoshfuji */
@@ -1577,6 +1586,8 @@
return addrconf_ifid_sit(eui, dev);
case ARPHRD_IPGRE:
return addrconf_ifid_gre(eui, dev);
+ case ARPHRD_IEEE802154:
+ return addrconf_ifid_eui64(eui, dev);
}
return -1;
}
@@ -2438,7 +2449,8 @@
(dev->type != ARPHRD_FDDI) &&
(dev->type != ARPHRD_IEEE802_TR) &&
(dev->type != ARPHRD_ARCNET) &&
- (dev->type != ARPHRD_INFINIBAND)) {
+ (dev->type != ARPHRD_INFINIBAND) &&
+ (dev->type != ARPHRD_IEEE802154)) {
/* Alas, we support only Ethernet autoconfiguration. */
return;
}