6lowpan: IPv6 link local address (06a4c1c5) · Commits · 戴 / test

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>

net/ipv6/addrconf.c

+13 −1

Original line number	Diff line number	Diff line
		@@ -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 @@ 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;
		}

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