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Commit 9deb441c authored Jun 04, 2018 by Subash Abhinov Kasiviswanathan Committed by David S. Miller Jun 05, 2018

net: ipv6: Generate random IID for addresses on RAWIP devices



RAWIP devices such as rmnet do not have a hardware address and
instead require the kernel to generate a random IID for the
IPv6 addresses.

Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent f4c9f85f

drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -221,6 +221,10 @@ void rmnet_vnd_setup(struct net_device *rmnet_dev)

		rmnet_dev->needs_free_netdev = true;
		rmnet_dev->ethtool_ops = &rmnet_ethtool_ops;

		/* This perm addr will be used as interface identifier by IPv6 */
		rmnet_dev->addr_assign_type = NET_ADDR_RANDOM;
		eth_random_addr(rmnet_dev->perm_addr);
		}

		/* Exposed API */

net/ipv6/addrconf.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2251,6 +2251,7 @@ static int ipv6_generate_eui64(u8 eui, struct net_device dev)
		return addrconf_ifid_ieee1394(eui, dev);
		case ARPHRD_TUNNEL6:
		case ARPHRD_IP6GRE:
		case ARPHRD_RAWIP:
		return addrconf_ifid_ip6tnl(eui, dev);
		}
		return -1;
		@@ -3286,7 +3287,8 @@ static void addrconf_dev_config(struct net_device *dev)
		(dev->type != ARPHRD_IP6GRE) &&
		(dev->type != ARPHRD_IPGRE) &&
		(dev->type != ARPHRD_TUNNEL) &&
		(dev->type != ARPHRD_NONE)) {
		(dev->type != ARPHRD_NONE) &&
		(dev->type != ARPHRD_RAWIP)) {
		/* Alas, we support only Ethernet autoconfiguration. */
		return;
		}