netdev - Re: [PATCH] pktgen: fix multiple queue warning

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Date:	Sun, 16 Nov 2008 23:30:06 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	robert@...ur.slu.se
Cc:	jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org,
	jeff@...zik.org, jesse.brandeburg@...el.com,
	robert.olsson@....uu.se
Subject: Re: [PATCH] pktgen: fix multiple queue warning

From: Robert Olsson <robert@...ur.slu.se>
Date: Sat, 8 Nov 2008 12:29:32 +0100

> Jeff Kirsher writes:
> 
>  > -	if (ntxq <= num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
>  > +	if (ntxq > num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
>  >  		printk(KERN_WARNING "pktgen: WARNING: QUEUE_MAP_CPU "
>  > -		       "disabled because CPU count (%d) exceeds number ",
>  > -		       num_online_cpus());
>  > -		printk(KERN_WARNING "pktgen: WARNING: of tx queues "
>  > -		       "(%d) on %s \n", ntxq, pkt_dev->odev->name);
> 
>  This triggers with the niu driver which has 12 TX queues on our 8 CPU-core 
>  system. Might be best to make sure that pkt_dev->cur_queue_map never exceeds 
>  ntxq.
> 
> pkt_dev->cur_queue_map  = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;

Can someone cook up a patch to fix this?

Thanks.
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