Re: [lwip-users] Windows 7 Startup crashes LwIP and Free RTOS

[Simon Goldschmidt]

Marco Jakobs wrote:
> Do you (or anybody) has any example code for this?

Well, I guess that largely depends on your MAC, which I don't know. Personally, 
I don't have these problems as I have enough memory to just allocate a 
maximum-sized frame for every packet (since small packets which just contain 
ACKs are not queued in the stack, anyway).

But from the struct you wrote, the driver should create one pbuf from 
'StartOfFrame' to 'EndOfFrame' and discard any partly concatenated packets that 
don't match this simple rule (e.g. another 'StartOfFrame' before an 
'EndOfFrame' or an overflow flag after a 'StartOfFrame').

As I said, the lwIP code *should* eventually drop such packets gracefully, but 
since this is a thing that doesn't happen often, that code *might* be broken 
and *might* produce the errors you see (which would be a bug worth fixing, of 
course).

Simon
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