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

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Message-ID: <20230726083915.1323c501@kernel.org>
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.