netdev - Re: [net-next v2 09/11] devlink: implement DEVLINK_CMD_REGION

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Date:   Thu, 26 Mar 2020 09:51:03 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jacob Keller <jacob.e.keller@...el.com>
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>
Subject: Re: [net-next v2 09/11] devlink: implement DEVLINK_CMD_REGION_NEW

Thu, Mar 26, 2020 at 04:51:55AM CET, jacob.e.keller@...el.com wrote:
>Implement support for the DEVLINK_CMD_REGION_NEW command for creating
>snapshots. This new command parallels the existing
>DEVLINK_CMD_REGION_DEL.
>
>In order for DEVLINK_CMD_REGION_NEW to work for a region, the new
>".snapshot" operation must be implemented in the region's ops structure.
>
>The desired snapshot id must be provided. This helps avoid confusion on
>the purpose of DEVLINK_CMD_REGION_NEW, and keeps the API simpler.
>
>The requested id will be inserted into the xarray tracking the number of
>snapshots using each id. If this id is already used by another snapshot
>on any region, an error will be returned.
>
>Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>

Reviewed-by: Jiri Pirko <jiri@...lanox.com>