Re: 3c59x network driver question

On Sat, 24 Sep 2005, Jonathan Lynch wrote:

> what does the register RxDComplete mean ?

It's not a register, but a bit. It means that the card has finished 
all processing needed for receiving the packet and the CPU is now free 
to do whatever it wants with the packet.

> The function boomerang_rx() loops on its value to take packets of 
> the rx ring buffer. Does this mean that while there are still 
> packets in the rx ring the interrupt handler will pass them up to 
> upper layers ?

Yes.

> I have notcied that a lot of delay is introduced in the router due 
> to the way packets from both incoming interfaces end up in the 
> output queue.

I don't quite understand what you want to say here: what delay are you 
measuring ? How do you track packets from the incoming interfaces in 
the output queue ?

> When there are two network interfaces mainly receiving packets and 
> one mainly sending, will their interrupt number affect how the order 
> packets are put into the queue for transmission?

No.

> Again, I would really appreciate if someone could answer my question.

Apart from the RxDComplete bit, your questions are not vortex 
specific; you might get better answers on the netdev mailing list.

-- 
Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: [email protected]
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