From 06a4c1c55dbe5d9f7a708e8f1a52fd2ac8e5874f Mon Sep 17 00:00:00 2001 From: "alex.bluesman.smirnov@gmail.com" Date: Thu, 10 May 2012 03:25:52 +0000 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index e3b3421f8dad..8b7f100a4b45 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -66,6 +66,7 @@ #include #include +#include #include #include #include @@ -1514,6 +1515,14 @@ static int addrconf_ifid_eui48(u8 *eui, struct net_device *dev) 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 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev) 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 @@ static void addrconf_dev_config(struct net_device *dev) (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; } -- 2.39.5