Re: [Linux-ATM-General] stop_queue for ATM?

[Karl H. <ka...@hi...>]

  On 20/08/2010 3:12, Nathan Williams wrote:
> Hi,
>
> Is there any mechanism for an ATM driver to tell the kernel that its TX
> queue is full?  I'd like to keep solos-pci's TX queue short so traffic
> priorities can be managed in the kernel.
>
> I think network devices can use netif_stop_queue(), so I'm wondering if
> there's something similar for ATM devices.
>
AFIK it's not currently possible inside device drivers.   Currently it's 
done where we have a netdevice,  see the clip and br2684 modules.  With 
br2684ctl you can adjust the sndbuff to change when netif_stop_queue() 
is called.


Two issues i have now are:
1.  There is no way for the device driver to stop the queue.

2.  For example when there are multiple br2684 or clip VCs  on a device, 
if one VC has the device full the other VCs don't netif_stop_queue()


--
Karl