netdev - Re: [EXTERNAL] Re: [PATCH v11 07/10] net: ti: icssg-prueth: Add ICSSG Stats

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Date: Wed, 26 Jul 2023 08:39:15 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Md Danish Anwar <a0501179@...com>
Cc: MD Danish Anwar <danishanwar@...com>, Randy Dunlap
 <rdunlap@...radead.org>, Roger Quadros <rogerq@...nel.org>, Simon Horman
 <simon.horman@...igine.com>, Vignesh Raghavendra <vigneshr@...com>, Andrew
 Lunn <andrew@...n.ch>, Richard Cochran <richardcochran@...il.com>, Conor
 Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh+dt@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, "David
 S. Miller" <davem@...emloft.net>, <nm@...com>, <srk@...com>,
 <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <netdev@...r.kernel.org>, <linux-omap@...r.kernel.org>,
 <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [EXTERNAL] Re: [PATCH v11 07/10] net: ti: icssg-prueth: Add
 ICSSG Stats

On Wed, 26 Jul 2023 16:06:06 +0530 Md Danish Anwar wrote:
> > Are the bucket sizes configurable? Can we set the bucket sizes
> > to standard RMON ones and use ethtool RMON stats?  
> 
> The bucket sizes are not configurable. Bucket size is read from hardware and is
> fixed. I don't think we can configure bucket size and use ethtool RMON stats.
> It's better to dump bucket sizes via ethtool -S.

The buckets in the ethtool API are up to the device to define.
Driver returns bucket ranges via struct ethtool_rmon_hist_range
from struct ethtool_ops::get_rmon_stats.