netdev - Re: [PATCH net-next 6/8] devlink: support directly reading from region memory

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Date:   Wed, 23 Nov 2022 11:20:18 -0800
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, Jiri Pirko <jiri@...dia.com>
Subject: Re: [PATCH net-next 6/8] devlink: support directly reading from
 region memory



On 11/18/2022 5:49 PM, Jakub Kicinski wrote:
> On Thu, 17 Nov 2022 14:08:01 -0800 Jacob Keller wrote:
>> +Regions may optionally allow directly reading from their contents without a
>> +snapshot. A driver wishing to enable this for a region should implement the
>> +``.read`` callback in the ``devlink_region_ops`` structure.
> 
> Perhaps worth adding that direct read has weaker atomicity guarantees
> than snapshot? User at the CLI level may not expect the read request
> to be broken up into smaller chunks.

Sure. I can expand on that.