RAWIP devices such as rmnet do not have a hardware address and
instead require the kernel to generate a random IID for the
temporary addresses. For permanent addresses, the device IID is
used along with prefix received.
Signed-off-by: Subash Abhinov Kasiviswanathan <subas...@codeaurora.org>
---
net/ipv6/addrconf.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f09afc2..e4c4540 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2230,6 +2230,18 @@ static int addrconf_ifid_ip6tnl(u8 *eui, struct
net_device *dev)
return 0;
}
+static int addrconf_ifid_rawip(u8 *eui, struct net_device *dev)
+{
+ struct in6_addr lladdr;
+
+ if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
+ get_random_bytes(eui, 8);
+ else
+ memcpy(eui, lladdr.s6_addr + 8, 8);
+
+ return 0;
+}
+
static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
{
switch (dev->type) {
@@ -2252,6 +2264,8 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device
*dev)
case ARPHRD_TUNNEL6:
case ARPHRD_IP6GRE:
return addrconf_ifid_ip6tnl(eui, dev);
+ case ARPHRD_RAWIP:
+ return addrconf_ifid_rawip(eui, dev);
}
return -1;
}
@@ -3286,7 +3300,8 @@ 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;
}
--
1.9.1
