netdev - Re: bnx2x - odd behaviour

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Date:   Wed, 17 Apr 2019 13:02:28 +0200
From:   Ian Kumlien <ian.kumlien@...il.com>
To:     Sudarsana Reddy Kalluru <skalluru@...vell.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Ariel Elior <aelior@...vell.com>,
        Ameen Rahman <arahman@...vell.com>
Subject: Re: bnx2x - odd behaviour

On Wed, Apr 17, 2019 at 9:58 AM Sudarsana Reddy Kalluru
<skalluru@...vell.com> wrote:
>
> +Ameen
>
> Ian,
>     We couldn't find the root-cause from the logs/register-dump.
> Could you please load the driver with link-debugs enabled, i.e., modprobe bnx2x debug=0x4 or 'ethtool -s <interface> msglvl 0x4'. And collect the complete kernel logs and the register-dump(collected before performing ifconfig-down). Please also provide the output of "ethtool -i <interface>".

I'll try, this is a production system...

Could it be related to the gro changes for UDP that was done in 5.x?

> Thanks,
> Sudarsana
> > -----Original Message-----
> > From: Ian Kumlien <ian.kumlien@...il.com>
> > Sent: Friday, April 12, 2019 4:39 PM
> > To: Sudarsana Reddy Kalluru <skalluru@...vell.com>
> > Cc: Linux Kernel Network Developers <netdev@...r.kernel.org>; Ariel Elior
> > <aelior@...vell.com>
> > Subject: Re: bnx2x - odd behaviour
> >
> > On Fri, Apr 12, 2019 at 12:53 PM Sudarsana Reddy Kalluru
> > <skalluru@...vell.com> wrote:
> > >
> > > Hi Ian,
> > >    Thanks for your info/help. There's not much info in the logs (e.g., FW
> > traces, calltraces). Will contact our firmware team on the register-dump
> > analysis and provide you the update.
> >
> > Thank you =)
> >
> > > Thanks,
> > > Sudarsana
> > > > -----Original Message-----
> > > > From: Ian Kumlien <ian.kumlien@...il.com>
> > > > Sent: Friday, April 12, 2019 2:44 PM
> > > > To: Sudarsana Reddy Kalluru <skalluru@...vell.com>
> > > > Cc: Linux Kernel Network Developers <netdev@...r.kernel.org>; Ariel
> > > > Elior <aelior@...vell.com>
> > > > Subject: Re: bnx2x - odd behaviour
> > > >
> > > > Finally!
> > > >
> > > > Just had a machine with the same issue!
> > > >
> > > > On Thu, Apr 11, 2019 at 10:56 AM Ian Kumlien <ian.kumlien@...il.com>
> > > > wrote:
> > > > >
> > > > > On Thu, Apr 4, 2019 at 4:27 PM Sudarsana Reddy Kalluru
> > > > > <skalluru@...vell.com> wrote:
> > > > > >
> > > > > > Hi,
> > > > > >    We are not aware of this issue. Please collect the register
> > > > > > dump i.e.,
> > > > "ethtool -d <interface>" output when this issue happens (before
> > > > performing
> > > > link-flap) and share it for the analysis.
> > > >
> > > > Sent the dump separately :)