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This patch is a simple implementation of 802.1q tagging in the vsc73xx driver. Currently, devices with DSA_TAG_PROTO_NONE are not functional. The VSC73XX family doesn't provide any tag support for external Ethernet ports. The only option available is VLAN-based tagging, which requires constant hardware VLAN filtering. While the VSC73XX family supports provider bridging, it only supports QinQ without full implementation of 802.1AD. This means it only allows the doubled 0x8100 TPID. In the simple port mode, QinQ is enabled to preserve forwarding of VLAN-tagged frames. Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Link: https://patch.msgid.link/20240713211620.1125910-9-paweldembicki@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
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