Re: NAPI for eepro100

Andrey Savochkin
2002-06-13T08:48:20Z

On Wed, Jun 12, 2002 at 04:05:32PM -0700, David S. Miller wrote:
> From: Jeff Garzik <jgarzik@mandrakesoft.com>
> 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