Hi all, I have a problem of Ether frame corruption on using mv88e6xxx DSA driver. Could you please tell me the solving method or patch if it is a known problem? Attached is workaround patch, and it seems to works fine.
Environment: kernel: linux-yocto-4.4 Hardware: Marvell 88E6182 L2SW with mv88e6xxx DSA driver +---------------------+ | L2SW(88E6182) | | with DSA Driver | +-+----------------+--+ | | VLAN 100 untagged port CPU external | | br.100 HUB -- PC The Ether frame sending from external port was corrupted by a data of VLAN tag and IPv4 header. There is no problem in case of received from external port. Analyze corrupted data by capturing external port and debugging by printing: Original packet: | Dst MAC |Src MAC | type | IPv4 hdr | | 8000273c8b6d|005043000201 | 0800 | 4500006cc7514000.. | VLAN packet: | Dst MAC |Src MAC | VLAN |type | IPv4 hdr | | 8000273c8b6d|005043000201 | 81000064 |0800 | 4500006cc7514000.. | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ < from this correct data > Corrupted packet: | Dst MAC |Src MAC | VLAN |type | IPv4 hdr | | 8000273c0064|08004500006c | c7514000 |0800 | 4500006cc7514000.. | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ < to this corrupted data > Best regards, Seiichi Ishitsuka
0001-Add-NETIF_F_HW_VLAN_CTAG_TX-to-hw_enc_features.patch
Description: 0001-Add-NETIF_F_HW_VLAN_CTAG_TX-to-hw_enc_features.patch