linux-kernel - Re: [PATCH net-next RFC 09/13] devlink: Add enable_remote_dev

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Message-ID: <5baf2825-a550-f68f-f76e-3a8688aa6ae6@mellanox.com>
Date:   Wed, 29 Jul 2020 17:42:12 +0300
From:   Moshe Shemesh <moshe@...lanox.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Vasundhara Volam <vasundhara-v.volam@...adcom.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next RFC 09/13] devlink: Add enable_remote_dev_reset
 generic parameter


On 7/28/2020 3:59 AM, Jakub Kicinski wrote:
> On Mon, 27 Jul 2020 14:02:29 +0300 Moshe Shemesh wrote:
>> The enable_remote_dev_reset devlink param flags that the host admin
>> allows device resets that can be initiated by other hosts. This
>> parameter is useful for setups where a device is shared by different
>> hosts, such as multi-host setup. Once the user set this parameter to
>> false, the driver should NACK any attempt to reset the device while the
>> driver is loaded.
>>
>> Signed-off-by: Moshe Shemesh <moshe@...lanox.com>
> There needs to be a devlink event generated when reset is triggered
> (remotely or not).
>
> You're also missing failure reasons. Users need to know if the reset
> request was clearly nacked by some host, not supported, etc. vs
> unexpected failure.


I will fix and send extack message to the user accordingly.