netdev - Re: Regression with AX88179A: can't manually set MAC address anymore

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date: Thu, 7 Sep 2023 08:56:42 +0200
From: Sergio Callegari <sergio.callegari@...il.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Bagas Sanjaya <bagasdotme@...il.com>, netdev@...r.kernel.org,
 Linux Kernel Mailing list <linux-kernel@...r.kernel.org>,
 Linux Regressions <regressions@...ts.linux.dev>,
 Oliver Neukum <oliver@...kum.org>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Regression with AX88179A: can't manually set MAC address anymore

For the time being having AX88179A error out on attempts to set an 
hardware address would possibly be useful, though.

Sergio

On 06/09/2023 14:31, Andrew Lunn wrote:
>> So if the in-tree driver could be fixed to correctly support the manual
>> configuration of the hardware (MAC) address as it used to be that would be
>> the best. I hope that Andrew Lunn's hypothesis is correct, and that cdc_ncm
>> can be extended to work with AX88179A even when a manual MAC addr is
>> configured.
> I think it can, but it looks like it needs a different
> implementation. The CDC NCM standard is publicly available. It
> documents an optional call to set the MAC address, and there appears
> to be a capability bit to indicate if its implemented in a specific
> device. Ideally if the bit is not set -EOPNOTSUPP should be returned
> when trying to set the MAC address, otherwise make the call to let the
> hardware know of the new MAC address.
>
> Sorry, i don't have the time or the hardware to actually implement
> this. But i can review patches and help with processes.
>
>        Andrew
>
>