Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V

[David Miller]

From: KY Srinivasan <kys@xxxxxxxxxxxxx>
Date: Thu, 17 Sep 2015 15:14:05 +0000

> I think I can achieve my original goal of not having any allocation
> in the send path by carefully using the memory available in the skb:

Please stop flat-out ignoring David L.'s suggestion.

Have a pre-cooked ring of buffers for these descriptors that you can
point the chip at.  No per-packet allocation is necessary at all.

If you play games with SKBs you will get burned.
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