add support for VLAN tags on TX path
For a WRTD node to be able to send events in the CERN WR network, it needs to use VLAN tags.
MockTurtle HDL and firmware already support this feature, see also this example on how to send with VLAN tag:
The relevant fields should probably be set for TX in:
Up to you to decide if you always tag or you provide a mechanism to enable/disable it and when you tag if you always tag with zero or not.
For RX, it looks like the MockTurtle HDL automatically detects a VLAN tag if present so there's nothing to do there I think:
Edited by Dimitris Lampridis