linux-kernel - Re: [PATCH net] net: dsa: report rx_bytes unadjusted for ETH

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Message-Id: <167930401755.16850.9444829347109631863.git-patchwork-notify@kernel.org>
Date:   Mon, 20 Mar 2023 09:20:17 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, andrew@...n.ch, f.fainelli@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: dsa: report rx_bytes unadjusted for ETH_HLEN

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@...emloft.net>:

On Sat, 18 Mar 2023 01:19:00 +0200 you wrote:
> We collect the software statistics counters for RX bytes (reported to
> /proc/net/dev and to ethtool -S $dev | grep 'rx_bytes: ") at a time when
> skb->len has already been adjusted by the eth_type_trans() ->
> skb_pull_inline(skb, ETH_HLEN) call to exclude the L2 header.
> 
> This means that when connecting 2 DSA interfaces back to back and
> sending 1 packet with length 100, the sending interface will report
> tx_bytes as incrementing by 100, and the receiving interface will report
> rx_bytes as incrementing by 86.
> 
> [...]

Here is the summary with links:
  - [net] net: dsa: report rx_bytes unadjusted for ETH_HLEN
    https://git.kernel.org/netdev/net/c/a8eff03545d4

You are awesome, thank you!
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