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

Browse source 
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>
This commit is contained in:
Subash Abhinov Kasiviswanathan 2018-06-04 19:26:07 -06:00 committed by David S. Miller
parent f4c9f85f3b
commit 9deb441c11
2 changed files with 7 additions and 1 deletions
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4
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
View file

@ -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 */

4
net/ipv6/addrconf.c
View file

@ -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;
}