netdev - Re: [PATCH iproute2 net-next] devlink: Add support for devlink-region access

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Date:   Thu, 19 Jul 2018 10:21:20 -0600
From:   David Ahern <dsahern@...il.com>
To:     Alex Vesker <valex@...lanox.com>, netdev@...r.kernel.org,
        jiri@...lanox.com
Subject: Re: [PATCH iproute2 net-next] devlink: Add support for devlink-region
 access

On 7/17/18 2:34 AM, Alex Vesker wrote:
> Devlink region allows access to driver defined address regions.
> Each device can create its supported address regions and register
> them. A device which exposes a region will allow access to it
> using devlink.
> 
> This support allows reading and dumping regions snapshots as well
> as presenting information such as region size and current available
> snapshots.
> 
> A snapshot represents a memory image of a region taken by the driver.
> If a device collects a snapshot of an address region it can be later
> exposed using devlink region read or dump commands.
> This functionality allows for future analyses on the snapshots.
> 
> The dump command is designed to read the full address space of a
> region or of a snapshot unlike the read command which allows
> reading only a specific section in a region/snapshot indicated by
> an address and a length, current support is for reading and dumping
> for a previously taken snapshot ID.
> 
> New commands added:
>  devlink region show [ DEV/REGION ]
>  devlink region delete DEV/REGION snapshot SNAPSHOT_ID
>  devlink region dump DEV/REGION [ snapshot SNAPSHOT_ID ]
>  devlink region read DEV/REGION [ snapshot SNAPSHOT_ID ]
>                                 address ADDRESS length length
> 
> Signed-off-by: Alex Vesker <valex@...lanox.com>
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>
> ---
>  devlink/devlink.c         | 485 +++++++++++++++++++++++++++++++++++++++++++++-
>  man/man8/devlink-region.8 | 131 +++++++++++++
>  man/man8/devlink.8        |   1 +
>  3 files changed, 616 insertions(+), 1 deletion(-)
>  create mode 100644 man/man8/devlink-region.8
> 

applied to iproute2-next. Thanks