LARTC - May 2004 - Are multiple output queues in qdisc possible?

Our system sets up multiple connections.  At times, packets can be transmitted
for some connections but not others.

With that in mind:

1. Is it possible to have multiple output queues in a qdisc,
   rather than one?

2. Can a packet that leaves qdisc be returned to qdisc if it
   cannot be transmitted?  

If so, how?

Thank you.

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EyeManBill@aol.com wrote:
> Our system sets up multiple connections.  At times, packets can be
transmitted for some connections but not others.
> 
> With that in mind:
> 
> 1. Is it possible to have multiple output queues in a qdisc,
>    rather than one?
> 
> 2. Can a packet that leaves qdisc be returned to qdisc if it
>    cannot be transmitted?  
> 
> If so, how?
Don''t really know about 1.

2. - there is a requeue function in the queues in net/sched and a 
comment in sch_api.c -

---requeue

    requeues once dequeued packet. It is used for non-standard or
    just buggy devices, which can defer output even if dev->tbusy=0.

I guess that gives a bit of hope.

Andy.


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