Re: [lwip-users] ethernetif_input usage with Ethernet over SPI

[Sylvain Rochet]

Hi,

On Thu, Aug 23, 2012 at 04:50:07PM +0200, Tomás Svec wrote:
> The problem is, the external chip is a prototype, so this would not help
> the cause. I am currently in contact with the manufacturer to clarify the
> ARP packages. But I am sure it does not have an embedded stack, just ARPs.

Well, but the ARP table is part of an IP stack (if used over Ethernet), 
and is actually in some implementations part of the IP routing table, 
where /32 routing entries contains Ethernet MAC/output-interface 
tupples.

I don't see how it can work if you do not receive ARP answers, you need 
them in order to fill the MAC destination address in Ethernet frames, 
which is either the final destination if the host in is the same IP 
subnet or either an IP router if not.

Or maybe I misunderstood what you said ? :)

Sylvain

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