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SubjectRe: hardware time stamping with optional structs in data area
On Wed, Jan 28, 2009 at 10:52:13AM +0100, Patrick Ohly wrote:
>
> Putting that into shinfo should work fine. I thought extending that
> structure with information that isn't needed for all packets was as bad
> as extending sk_buff itself. If that isn't the case, then extending
> shinfo definitely is the simplest solution.

Not at all, the sk_buff has its own slab while skb->head uses
kmalloc. The latter has loads of free space due to padding for
common MTUs such as 1500 or header-only.

Cheers,
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