On 3/3/06, Herbert Xu <[EMAIL PROTECTED]> wrote:
> Stephen Hemminger <[EMAIL PROTECTED]> wrote:
> >
> > Also, you should use 2 rather than NET_IP_ALIGN here.
> > The point of NET_IP_ALIGN is to allow architectures where unaligned
> > DMA is expensive to redefine NET_IP_ALIGN to 0.  But in this case you
> > are not DMA'ing into the new buffer but using memcpy so you always
> > want to reserve 2 (16 - ETH_HLEN) to cause aligned access in IP receive.
>
> Good point.  The name of this macro is really misleading.  Can we perhaps
> replace NET_IP_ALIGN with NET_IP_DMA_ALIGN and add a new macro
> NET_IP_SW_ALIGN and use that instead of 2.

Excellent idea :-)

- Arnaldo
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