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

From: "Michael S. Tsirkin" <[email-masked]>
Date: Mon, 14 May 2012 20:04:13 +0300

On Mon, May 14, 2012 at 09:54:46AM -0700, Stephen Hemminger wrote:
> On Sun, 13 May 2012 18:52:06 +0300
> "Michael S. Tsirkin" <[email-masked]> 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.

I don't object in principle but macvtap has same code
so seems better to stay consistent.

-- 
MST