netdev - Re: [PATCH v2 iwl-next 1/2] igbvf: add lbtx_packets and lbtx

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Message-ID: <20250827122712.GA1063@horms.kernel.org>
Date: Wed, 27 Aug 2025 13:27:12 +0100
From: Simon Horman <horms@...nel.org>
To: Kohei Enju <enjuk@...zon.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Tony Nguyen <anthony.l.nguyen@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	kohei.enju@...il.com, Paul Menzel <pmenzel@...gen.mpg.de>
Subject: Re: [PATCH v2 iwl-next 1/2] igbvf: add lbtx_packets and lbtx_bytes
 to ethtool statistics

On Tue, Aug 19, 2025 at 12:18:26AM +0900, Kohei Enju wrote:
> Currently ethtool shows lbrx_packets and lbrx_bytes (Good RX
> Packets/Octets loopback Count), but doesn't show the TX-side equivalents
> (lbtx_packets and lbtx_bytes). Add visibility of those missing
> statistics by adding them to ethtool statistics.
> 
> In addition, the order of lbrx_bytes and lbrx_packets is not consistent
> with non-loopback statistics (rx_packets, rx_bytes). Therefore,
> align the order by swapping positions of lbrx_bytes and lbrx_packets.
> 
> Tested on Intel Corporation I350 Gigabit Network Connection.
> 
> Before:
>   # ethtool -S ens5 | grep -E "x_(bytes|packets)"
>        rx_packets: 135
>        tx_packets: 106
>        rx_bytes: 16010
>        tx_bytes: 12451
>        lbrx_bytes: 1148
>        lbrx_packets: 12
> 
> After:
>   # ethtool -S ens5 | grep -E "x_(bytes|packets)"
>        rx_packets: 748
>        tx_packets: 304
>        rx_bytes: 81513
>        tx_bytes: 33698
>        lbrx_packets: 97
>        lbtx_packets: 109
>        lbrx_bytes: 12090
>        lbtx_bytes: 12401
> 
> Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>
> Signed-off-by: Kohei Enju <enjuk@...zon.com>

Reviewed-by: Simon Horman <horms@...nel.org>