Re: NAPI for eepro100

[Andrey Savochkin <saw@xxxxxxxxxxxxx>]

On Wed, Jun 12, 2002 at 04:05:32PM -0700, David S. Miller wrote:
>    From: Jeff Garzik <jgarzik@xxxxxxxxxxxxxxxx>
>    Date: Wed, 12 Jun 2002 19:00:00 -0400
>    
>    for the 'mips' patch, it looks 
>    like the arch maintainer(s) need to fix the PCI DMA support...
> 
> No, it's worse than that.
> 
> See how non-consistent memory is used by the eepro100 driver
> for descriptor bits?  The skb->tail bits?
> 
> That is very problematic.

What's the problem?
If it isn't allowed to do, then what is the meaning of PCI_DMA_BIDIRECTIONAL
mappings?

        Andrey