[Click] Reserving extra header room on (transit) packets

[Philip Prindeville]

On 3/7/11 12:30 AM, Harald Schioeberg wrote:
>
> On 03/07/2011 01:03 AM, Philip Prindeville wrote:
>
>> So two questions: how do I tell click I want extra space
>> reserved for headers on ingress?
> This may help for the first question:
>
> Use HEADROOM in userlevel, you can't in linuxmodule:
> https://pdos.csail.mit.edu/pipermail/click/2008-July/007068.html
>
> 	Harald
>

Ah... well, I am in kernel mode, and I was wondering why it wasn't seeming to have any effect.

Ok, so what needs to be done to make it work in linuxmodule?

Or rather, how would a driver need to be changed to support this?  I'm using ixgbe...

Thanks.