Gesendet: Mittwoch, 26. April 2023 um 19:25 Uhr Von: "Arınç ÜNAL" arinc.unal@arinc9.com On 26/04/2023 20:21, Frank Wunderlich wrote:
From: Felix Fietkau nbd@nbd.name
Through testing I found out that hardware vlan rx offload support seems to have some hardware issues. At least when using multiple MACs and when receiving tagged packets on the secondary MAC, the hardware can sometimes start to emit wrong tags on the first MAC as well.
In order to avoid such issues, drop the feature configuration and use the offload feature only for DSA hardware untagging on MT7621/MT7622 devices where this feature works properly.
Fixes: 08666cbb7dd5 ("net: ethernet: mtk_eth_soc: add support for configuring vlan rx offload") Tested-by: Frank Wunderlich frank-w@public-files.de Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Frank Wunderlich frank-w@public-files.de Tested-by: Arınç ÜNAL arinc.unal@arinc9.com
I'm confused by this. What is HW-vlan-untagging, and which SoCs do you think this patch would break this feature? How can I utilise this feature on Linux so I can confirm whether it works or not?
the feature itself breaks vlan on mac of bpi-r3
1 mac is connected to switch and uses dsa tags, the other mac is directly accessible and vlan-tag there is stripped by this feature.
with this patch i can use vlans on the "standalone" mac again (see tagged packets incoming).
regards Frank