linux-kernel - Re: [Intel-wired-lan] [PATCH v1 iwl-next 1/2] igbvf: add lbtx_packets and lbtx

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Message-ID: <9b44df93-acec-4416-9f32-f97d0bfaaa7b@molgen.mpg.de>
Date: Wed, 13 Aug 2025 10:18:29 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
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
Subject: Re: [Intel-wired-lan] [PATCH v1 iwl-next 1/2] igbvf: add lbtx_packets
 and lbtx_bytes to ethtool statistics

Dear Kohei,


Thank you for your patch.

Am 13.08.25 um 09:50 schrieb Kohei Enju:
> 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
> 
> Tested-by: Kohei Enju <enjuk@...zon.com>

No need to resend, but I believe, you only add a Tested-by: tag, if the 
person differs from the author/Signed-off-by: tag.

> Signed-off-by: Kohei Enju <enjuk@...zon.com>
> ---
>   drivers/net/ethernet/intel/igbvf/ethtool.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/intel/igbvf/ethtool.c b/drivers/net/ethernet/intel/igbvf/ethtool.c
> index 773895c663fd..c6defc495f13 100644
> --- a/drivers/net/ethernet/intel/igbvf/ethtool.c
> +++ b/drivers/net/ethernet/intel/igbvf/ethtool.c
> @@ -30,8 +30,10 @@ static const struct igbvf_stats igbvf_gstrings_stats[] = {
>   	{ "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
>   	{ "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
>   	{ "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
> -	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
>   	{ "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
> +	{ "lbtx_packets", IGBVF_STAT(stats.gptlbc, stats.base_gptlbc) },
> +	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
> +	{ "lbtx_bytes", IGBVF_STAT(stats.gotlbc, stats.base_gotlbc) },
>   	{ "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
>   	{ "tx_timeout_count", IGBVF_STAT(tx_timeout_count, zero_base) },
>   	{ "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },

Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>


Kind regards,

Paul