Subject: Re: [PATCH] ucc_geth: Add 8 bytes to max TX frame for VLANs

From: Benny Amorsen <[email-masked]>
Date: Wed, 19 Mar 2008 22:56:23 +0100

Joakim Tjernlund <[email-masked]> writes:

> Creating a VLAN interface on top of ucc_geth adds 4 bytes
> to the frame and the HW controller is not prepared to
> TX a frame bigger than 1518 bytes which is 4 bytes too
> small for a full VLAN frame. Also add 4 extra bytes for future
> expansion.

What about QinQ -- the 4 extra bytes handle that? If the limit can be
raised so easily, why have a static limit at all?

/Benny