netdev - Re: Face some error after applying commit 7dfa4b414d4(net/mlx4

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Date:	Tue, 11 Nov 2014 08:49:06 +0200
From:	Or Gerlitz <gerlitz.or@...il.com>
To:	Wei Yang <weiyang@...ux.vnet.ibm.com>
Cc:	Amir Vadai <amirv@...lanox.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: Face some error after applying commit 7dfa4b414d4(net/mlx4_en:
 Code cleanups in tx path)

On Tue, Nov 11, 2014 at 3:57 AM, Wei Yang <weiyang@...ux.vnet.ibm.com> wrote:
>>Please send me the module parameters you used when loading mlx4_core, a
>>full dmesg with both mlx4_core and mlx4_en loading.
>
> The command line I use is:
>         modprobe mlx4_core num_vfs=1 probe_vf=1 port_type_array=2,2
>
> The log I sent in the first mail is the full log, including the CQE error, one
> warning in watchdog, and then print the CQE error periodicly. What else
> message you would like me to capture?
>
> And this error is reported from VF always. After the error, the other network
> interface seems can't function.

Guys, do we have here something which isn't bisectable (i.e the code
doesn't work if you force it to an arbitrary commit within in the
chain) - something which doesn't work as a whole? in case the former,
we will work to do better next times.. in case the latter, Wei, as
Amir asked, please send us full logs when you load/run the driver with
debug level set, for mlx4_core it would be loading with debug_level=1
for mlx4_en you should be able to raise the debug level using ethtool

Or.
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