netdev - Re: Aw: Re: Re: [PATCH net v3 4/5] net: ethernet: mtk_eth_soc: drop generic vlan rx offload, only use DSA untagging

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Date:   Fri, 30 Dec 2022 17:13:01 +0100
From:   Felix Fietkau <nbd@....name>
To:     Frank Wunderlich <frank-w@...lic-files.de>
Cc:     netdev@...r.kernel.org, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: Aw: Re: Re: [PATCH net v3 4/5] net: ethernet: mtk_eth_soc: drop
 generic vlan rx offload, only use DSA untagging

On 30.12.22 16:38, Frank Wunderlich wrote:
> seems only tx is affected on r3, as i see packets on the vlan from my laptop
> 
> tcpdump on R3 (e4:b9:7a:f7:c4:8b is mac from laptop):
> 
> 13:47:05.265508 e4:b9:7a:f7:c4:8b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 577: vlan 500, p 0, ethertype IPv4 (0x0800), 192.168.50.2.59389 > 192.168.50.255.21027: UDP, length 531
> 13:47:05.265548 e4:b9:7a:f7:c4:8b > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 577: vlan 600, p 0, ethertype IPv4 (0x0800), 192.168.60.2.59389 > 192.168.60.255.21027: UDP, length 531
> 
> regards Frank
I don't have a setup to test 6.2 on my MT7986 board right now, but I did 
test latest OpenWrt with my changes and couldn't reproduce the issue there.
I checked the diff between my tree and upstream and didn't find any 
relevant differences in mtk_eth_soc.c
Not sure what's going on or how to narrow it down further.

- Felix