> Basically I need a version of skb_realloc_headroom that allows me to
> specify needed headroom _and_ tailroom, because my driver adds a
> "footer" in addition to its own header. I can well imagine there could
> be real hardware drivers that need this too.
I see. Let's try to add it to skbuff.c.
BTW it is interesting to know, how it is used. I am just curious,
because encapsulation with trailers may give real advantages sometimes.
I have only one guess: intuition prompts me, that you copy data
in skb, and then encrypt it in place. Right? 8)8) If it is right,
it is worth to remind, that it is much slower, than parallel
encrypt and copy.
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