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Date:   Tue, 6 Jun 2023 17:16:05 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     Justin Chen <justin.chen@broadcom.com>
Cc:     netdev@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
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Subject: Re: [PATCH net-next v6 3/6] net: bcmasp: Add support for ASP2.0
 Ethernet controller
Message-ID: <20230606171605.3c20ae79@kernel.org>
In-Reply-To: <956dc20f-386c-f4fe-b827-1a749ee8af02@broadcom.com>
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        <1685657551-38291-4-git-send-email-justin.chen@broadcom.com>
        <20230602235859.79042ff0@kernel.org>
        <956dc20f-386c-f4fe-b827-1a749ee8af02@broadcom.com>
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On Tue, 6 Jun 2023 15:58:21 -0700 Justin Chen wrote:
> On 6/2/23 11:58 PM, Jakub Kicinski wrote:
> > On Thu,  1 Jun 2023 15:12:28 -0700 Justin Chen wrote:  
> >> +	/* general stats */
> >> +	STAT_NETDEV(rx_packets),
> >> +	STAT_NETDEV(tx_packets),
> >> +	STAT_NETDEV(rx_bytes),
> >> +	STAT_NETDEV(tx_bytes),
> >> +	STAT_NETDEV(rx_errors),
> >> +	STAT_NETDEV(tx_errors),
> >> +	STAT_NETDEV(rx_dropped),
> >> +	STAT_NETDEV(tx_dropped),
> >> +	STAT_NETDEV(multicast),  
> > 
> > please don't report standard interface stats in ethtool -S
> >   
> 
> These are not netdev statistics but MAC block counters. Guess it is not 
> clear with the naming here, will fix this. We have a use case where the 
> MAC traffic may be redirected from the associated net dev, so the 
> counters may not be the same.

You seem to be dumping straight from the stats member of struct
net_device:

+		if (s->type == BCMASP_STAT_NETDEV)
+			p = (char *)&dev->stats;

No?

Also - can you describe how you can have multiple netdevs for 
the same MAC?