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Re: RFC/RFT: compat-wireless for 2.6.32.4 - MQ backport support

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On Thu, 2010-01-21 at 10:16 -0800, Luis R. Rodriguez wrote:
> On Thu, Jan 21, 2010 at 1:44 AM, Johannes Berg
> <johannes@xxxxxxxxxxxxxxxx> wrote:
> > On Wed, 2010-01-20 at 21:55 -0500, Luis R. Rodriguez wrote:
> >
> >> @@ -287,7 +287,13 @@
> >>
> >>       rcu_read_lock();
> >>       list_for_each_entry_rcu(sdata, &local->interfaces, list)
> >> +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
> >>               netif_tx_wake_queue(netdev_get_tx_queue(sdata->dev, queue));
> >> +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23))
> >> +             netif_start_subqueue(sdata->dev, queue);
> >> +#else
> >> +             netif_wake_queue(sdata->dev);
> >> +#endif
> >
> > That's incorrect, you need to check for all hardware queues being awake.
> 
> Can you elaborate? I'm not following.

Well something like

stopped = 0;
for (i = 0; i < hw_queues; i++)
	if (queue_stop_reason[i])
		stopped++;

if (stopped == 0)
	netif_wake_queue()

johannes

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