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ipv6: addrconf: fix 48 bit 6lowpan autoconfiguration 

This patch adds support for 48 bit 6LoWPAN address length
autoconfiguration which is the case for BTLE 6LoWPAN.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2017-03-12 10:19:36 +02:00 committed by Marcel Holtmann
parent 94e4a68039
commit 8a7a4b4767
1 changed files with 12 additions and 5 deletions
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17
net/ipv6/addrconf.c
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@ -2073,12 +2073,19 @@ static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
__ipv6_dev_ac_dec(ifp->idev, &addr);
}
static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev)
static int addrconf_ifid_6lowpan(u8 *eui, struct net_device *dev)
{
if (dev->addr_len != EUI64_ADDR_LEN)
switch (dev->addr_len) {
case ETH_ALEN:
return addrconf_ifid_eui48(eui, dev);
case EUI64_ADDR_LEN:
memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN);
eui[0] ^= 2;
break;
default:
return -1;
memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN);
eui[0] ^= 2;
}
return 0;
}
@ -2170,7 +2177,7 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
case ARPHRD_TUNNEL:
return addrconf_ifid_gre(eui, dev);
case ARPHRD_6LOWPAN:
return addrconf_ifid_eui64(eui, dev);
return addrconf_ifid_6lowpan(eui, dev);
case ARPHRD_IEEE1394:
return addrconf_ifid_ieee1394(eui, dev);
case ARPHRD_TUNNEL6: