This patch adds support for 48 bit 6LoWPAN address length
autoconfiguration which is the case for BTLE 6LoWPAN.
Signed-off-by: Alexander Aring <aar@xxxxxxxxxxxxxx>
---
net/ipv6/addrconf.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a1f6b7b..aab9b0d 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2007,12 +2007,21 @@ 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:
+ if (dev->addr_len != EUI64_ADDR_LEN)
+ return -1;
+ 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;
}
@@ -2103,7 +2112,7 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
case ARPHRD_IPGRE:
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:
--
2.9.0
--
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