Subject: Re: [PATCH v2] net: deliver skbs on inactive slaves to exact matches

From: "Michael S. Tsirkin" <[email-masked]>
Date: Mon, 14 Jun 2010 17:10:12 +0300

On Mon, Jun 14, 2010 at 03:38:28PM +0200, Eric Dumazet wrote:
> Le lundi 14 juin 2010 à 15:34 +0200, Eric Dumazet a écrit :
> 
> > [PATCH] net: fix deliver_no_wcard regression on loopback device
> > 
> > deliver_no_wcard is not being set in skb_copy_header.
> > In the skb_cloned case it is not being cleared and
> > may cause the skb to be dropped when the loopback device
> > pushes it back up the stack.
> > 
> > Signed-off-by: John Fastabend <[email-masked]>
> > Acked-by: Eric Dumazet <[email-masked]>
> 
> Oh I forgot :
> 
> Tested-by: Markus Trippelsdorf <[email-masked]>

Grr. Could have saved myself a bit of time if I guessed
it's related.

> > ---
> > diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> > index 9f07e74..bcf2fa3 100644
> > --- a/net/core/skbuff.c
> > +++ b/net/core/skbuff.c
> > @@ -532,6 +532,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
> >  	new->ip_summed		= old->ip_summed;
> >  	skb_copy_queue_mapping(new, old);
> >  	new->priority		= old->priority;
> > +	new->deliver_no_wcard	= old->deliver_no_wcard;
> >  #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
> >  	new->ipvs_property	= old->ipvs_property;
> >  #endif
> > 
>