> My bad, it merely allows for devices that can handle
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> frag lists in sk_buff as transmit packets.

:)

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> I guess you could use this, btw, to take on arbitrary things
> to the front of frames to handle big headers.  But that's more
> expensive than just getting the LL header length right.

Not necessarily because we seem to be getting a lot of cloned frames
that we need to copy all the time. If we would remove the ethernet
header and stick that skb into the fraglist of a new skb we'd win.

johannes