Re: [PATCH net-next v2 0/8] Add Xilinx TSN Endpoint Ethernet MAC driver

On Wed, 16 Sep 2026 13:31:26 +0530 Neeli, Srinivas wrote:

On the data path, DSA maps onto the hardware cleanly. On RX, the EP DMA 
path delivers the source port in sideband metadata, which feeds DSA's 
existing metadata-based
demultiplexing to the per-port netdevs. On TX, the normal data path has 
no destination-port selector and the switch has no independent per-port 
forwarding mask, so
standalone isolation is done with a private VLAN containing only the 
selected port and the EP. The next version uses DSA's tag_8021q helpers 
to manage those VLANs, insert
the destination port's VLAN tag (which the hardware strips before wire 
egress), and handle the transitions between standalone and bridged 
operation.

Oh, well, that probably makes DSA justifiable here.
Please provide more details in the cover letter for v3.
Given the TSN focus I was expecting that the "EP" will
have the ability to apply metadata to control the treatment
of the egress packets, but sounds like quite the opposite :(