Packet structure for Ethernet frames with a Marvell DSA switch tag inserted

+-----------------------------------+
|   Destination Address (6 octets)  |
+-----------------------------------+
|      Source Address (6 octets)    |
+-----------------------------------+
| Marvell DSA switch tag (4 octets) |
+-----------------------------------+
|       Type/Length (2 octets)      |
+-----------------------------------+
|              Payload              |
.                                   .
.                                   .
.                                   .

Description

A Marvell DSA switch tag is inserted in the Ethernet header before the Type/Length field.