From: Kristian Evensen <kristian.evensen@xxxxxxxxx>
All ZTE MF910 mifis, at least on some revisions, export the same MAC
address (36:4b:50:b7:ef:da). Check for this MAC address and set a random
MAC if detected.
Also, changed the memcpy() to ether_addr_copy(), as pointed out by
checkpatch.
Signed-off-by: Kristian Evensen <kristian.evensen@xxxxxxxxx>
---
drivers/net/usb/rndis_host.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 524a47a281..85bdbdf 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -295,6 +295,9 @@ static const struct net_device_ops rndis_netdev_ops = {
.ndo_validate_addr = eth_validate_addr,
};
+/* well-known buggy ZTE MF910 MAC address */
+static const u8 buggy_zte_addr[ETH_ALEN] = {0x36, 0x4b, 0x50, 0xb7, 0xef, 0xda};
+
int
generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
{
@@ -428,7 +431,11 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto halt_fail_and_release;
}
- memcpy(net->dev_addr, bp, ETH_ALEN);
+
+ if (ether_addr_equal(bp, buggy_zte_addr))
+ eth_hw_addr_random(net);
+ else
+ ether_addr_copy(net->dev_addr, bp);
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
--
2.5.0
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