Re: Ethernet over SPI driver for ENC424J600

[Ilija Kocho <ilijak@siva.com.mk>]

John Dallaway wrote:
> Hi Sergei
>
> Sergei Gavrikov wrote:
>
>   
>> Hello guys, may be I miss something but I thought that any Ethernet
>> eCos driver is enough abstract thing to manage ETH L2 and that does
>> not depend (well, depends a bit) on any next layer, e.g., a TCP/IP
>> implementation (RedBoot TCP/IP, *BSD, lwIP* stacks) even if the driver
>> uses another channel (SPI) to get a memory access to MAC buffers.  I
>> talk about generic io/eth/* stuff and..., well some kind of a future
>> devs/eth/mc/spi/* eth_drv_.* routines, for example.
>>     
>
> In theory, of course, you are correct. The network abstractions should
> ensure compatibility between any ethernet device driver and any TCP/IP
> stack. But in practice, testing can reveal all manner of issues which
> no-one was expecting.
>   
This is our first eCos driver of this kind and we take the abstraction 
and stack independence for granted. It may save us some effort and help 
bring the driver sooner if somebody more experienced points out 
potential potholes.

Regards
Ilija Kocho