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Re: [PATCH] net/8021q/vlan_dev.c - Use print_mac

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On Mon, 2008-02-18 at 16:19 +0100, Patrick McHardy wrote:
> > @@ -404,11 +405,8 @@ static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
> >  
> >  	pr_debug("%s: about to send skb: %p to dev: %s\n",
> >  		__FUNCTION__, skb, skb->dev->name);
> > -	pr_debug("  " MAC_FMT " " MAC_FMT " %4hx %4hx %4hx\n",
> > -		 veth->h_dest[0], veth->h_dest[1], veth->h_dest[2],
> > -		 veth->h_dest[3], veth->h_dest[4], veth->h_dest[5],
> > -		 veth->h_source[0], veth->h_source[1], veth->h_source[2],
> > -		 veth->h_source[3], veth->h_source[4], veth->h_source[5],
> > +	pr_debug("  %s %s %4hx %4hx %4hx\n",
> > +		 print_mac(mac, veth->h_dest), print_mac(mac2, veth->h_source),
> This results in print_mac getting called twice per packet even without
> debugging. Whats the problem with MAC_FMT?

It's just a consistency thing.
It identifies code where MAC addresses are used.
an allyesconfig is a bit smaller (~.1%).
pr_debug is a noop when not debugging, print_mac is optimized away.

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