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Date:   Thu, 15 Oct 2020 11:37:32 +0800
From:   Coiby Xu <>
To:     Benjamin Poirier <>
Cc:, Shung-Hsi Yu <>,
        Manish Chopra <>,
        "supporter:QLOGIC QLGE 10Gb ETHERNET DRIVER" 
        Greg Kroah-Hartman <>,
        open list <>,
        "open list:QLOGIC QLGE 10Gb ETHERNET DRIVER" <>
Subject: Re: [PATCH v1 1/6] staging: qlge: Initialize devlink health dump
 framework for the dlge driver

On Tue, Oct 13, 2020 at 09:37:04AM +0900, Benjamin Poirier wrote:
>On 2020-10-12 19:24 +0800, Coiby Xu wrote:
>> > I think, but didn't check in depth, that in those drivers, the devlink
>> > device is tied to the pci device and can exist independently of the
>> > netdev, at least in principle.
>> >
>> You are right. Take drivers/net/ethernet/mellanox/mlxsw as an example,
>> devlink reload would first first unregister_netdev and then
>> register_netdev but struct devlink stays put. But I have yet to
>> understand when unregister/register_netdev is needed.
>Maybe it can be useful to manually recover if the hardware or driver
>gets in an erroneous state. I've used `modprobe -r qlge && modprobe
>qlge` for the same in the past.

Thank you for providing this user case!
>> Do we need to
>> add "devlink reload" for qlge?
>Not for this patchset. That would be a new feature.

To implement this feature, it seems I need to understand how qlge work
under the hood. For example, what's the difference between
qlge_soft_reset_mpi_risc and qlge_hard_reset_mpi_risc? Or should we use
a brute-force way like do the tasks in qlge_remove and then re-do the
tasks in qlge_probe? Is a hardware reference manual for qlge device?

Best regards,

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