netdev - Re: bnxt: card intermittently hanging and dropping link

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Date:   Wed, 15 Aug 2018 23:29:34 -0700
From:   Michael Chan <michael.chan@...adcom.com>
To:     Daniel Axtens <dja@...ens.net>
Cc:     Netdev <netdev@...r.kernel.org>, jay.vosburgh@...onical.com
Subject: Re: bnxt: card intermittently hanging and dropping link

On Wed, Aug 15, 2018 at 10:29 PM, Daniel Axtens <dja@...ens.net> wrote:

> [ 2682.911295] ------------[ cut here ]------------
> [ 2682.911319] NETDEV WATCHDOG: eth4 (bnxt_en): transmit queue 0 timed out

The main issue is the TX timeout.
.....

> [ 2682.911693] bnxt_en 0000:3b:00.0 eth4: TX timeout detected, starting reset task!
> [ 2683.782496] bnxt_en 0000:3b:00.0 eth4: Resp cmpl intr err msg: 0x51
> [ 2683.783061] bnxt_en 0000:3b:00.0 eth4: hwrm_ring_free tx failed. rc:-1
> [ 2684.634557] bnxt_en 0000:3b:00.0 eth4: Resp cmpl intr err msg: 0x51
> [ 2684.635120] bnxt_en 0000:3b:00.0 eth4: hwrm_ring_free tx failed. rc:-1

and it is not recovering.

Please provide ethtool -i eth4 which will show the firmware version on
the NIC.  Let's see if the firmware is too old.

Thanks.