linux-kernel - Re: [PATCH net 1/2] net: enetc: correct the statistics of rx bytes

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Message-ID: <20230602103142.ryesgb7ykamtzxnx@skbuf>
Date:   Fri, 2 Jun 2023 13:31:42 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     wei.fang@....com
Cc:     claudiu.manoil@....com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, ast@...nel.org,
        daniel@...earbox.net, hawk@...nel.org, john.fastabend@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 1/2] net: enetc: correct the statistics of rx bytes

On Fri, Jun 02, 2023 at 05:46:58PM +0800, wei.fang@....com wrote:
> From: Wei Fang <wei.fang@....com>
> 
> The rx_bytes of struct net_device_stats should count the length of
> ethernet frames excluding the FCS. However, there are two problems
> with the rx_bytes statistics of the current enetc driver. one is
> that the length of VLAN header is not counted if the VLAN extraction
> feature is enabled. The other is that the length of L2 header is not
> counted, because eth_type_trans() is invoked before updating rx_bytes
> which will subtract the length of L2 header from skb->len.
> BTW, the rx_bytes statistics of XDP path also have similar problem,
> I will fix it in another patch.
> 
> Fixes: a800abd3ecb9 ("net: enetc: move skb creation into enetc_build_skb")
> Signed-off-by: Wei Fang <wei.fang@....com>
> ---

Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>

By the way, you mangled Jakub's email (kuba@...nel.or) - I've fixed it up.