MIRRORS/linux-imx
1
0
Fork 0
mirror of https://github.com/nxp-imx/linux-imx.git synced 2025-07-18 23:29:57 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

net: usb: usbnet: fix name regression

Browse Source 
[ Upstream commit 8a7d12d674 ]

The fix for MAC addresses broke detection of the naming convention
because it gave network devices no random MAC before bind()
was called. This means that the check for the local assignment bit
was always negative as the address was zeroed from allocation,
instead of from overwriting the MAC with a unique hardware address.

The correct check for whether bind() has altered the MAC is
done with is_zero_ether_addr

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: Greg Thelen <gthelen@google.com>
Diagnosed-by: John Sperbeck <jsperbeck@google.com>
Fixes: bab8eb0dd4 ("usbnet: modern method to get random MAC")
Link: https://patch.msgid.link/20241017071849.389636-1-oneukum@suse.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Oliver Neukum 2024-10-17 09:18:37 +02:00 committed by Greg Kroah-Hartman
parent a7bdb19978
commit 7caee37c46
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/usb/usbnet.c
View File

@ -1771,7 +1771,8 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
// can rename the link if it knows better.
if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
(net->dev_addr [0] & 0x02) == 0))
/* somebody touched it*/
!is_zero_ether_addr(net->dev_addr)))
strscpy(net->name, "eth%d", sizeof(net->name));
/* WLAN devices should always be named "wlan%d" */
if ((dev->driver_info->flags & FLAG_WLAN) != 0)