Re: [PATCH RFC] tun: experimental zero copy tx support

From: Stephen Hemminger
Date: Mon May 14 2012 - 12:54:50 EST

On Sun, 13 May 2012 18:52:06 +0300
"Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote:

> + /* Userspace may produce vectors with count greater than
> + * MAX_SKB_FRAGS, so we need to linearize parts of the skb
> + * to let the rest of data to be fit in the frags.
> + */
Rather than complex partial code, just go through slow path for
requests with too many frags (or for really small requests).
Creating mixed skb's seems too easy to get wrong.
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