netdev - Re: [PATCH] net/mlx4_core: print firmware version during driver loading

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

Date:   Fri, 14 Sep 2018 14:14:06 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     qing.huang@...cle.com
Cc:     andrew@...n.ch, leon@...nel.org, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        tariqt@...lanox.com
Subject: Re: [PATCH] net/mlx4_core: print firmware version during driver
 loading

From: Qing Huang <qing.huang@...cle.com>
Date: Fri, 14 Sep 2018 11:33:40 -0700

> 
> 
> On 9/14/2018 11:17 AM, Andrew Lunn wrote:
>> On Fri, Sep 14, 2018 at 10:15:48AM -0700, Qing Huang wrote:
>>> The FW version is actually a very crucial piece of information and
>>> only
>>> printed once here
>>> when the driver is loaded. People tend to get confused when switching
>>> multiple FW files
>>> back and forth without running separate utility tools, especially at
>>> customer sites.
>>> IMHO, this information is very useful and only takes up very little
>>> log file
>>> space. :-)
>> Why not use ethtool -i ?
>>
>> $ sudo ethtool -i eth0
>> driver: r8169
>> version: 2.3LK-NAPI
>> firmware-version: rtl8168g-2_0.0.1 02/06/13
>>
>>      Andrew
> Sure. You can also use ibstat or ibv_devinfo tool if they are
> installed. But it's not very
> convenient in some cases.
> 
> E.g.
> A customer upgrades FW on HCAs and encounters issues. During triage,
> it's much easier
> to study customer uploaded log files when remotely testing different
> FW files.

Not a valid argument.  You can print the ethtool output from initramfs
if necessary for triage.

I still stand by the fact that ethtool is the only fully reliable way
to obtain this information, the kernel log is not.