[ECOS] ecos + lwip
Wed Sep 2 13:19:00 GMT 2009
On Wed, Sep 2, 2009 at 11:45 AM, Mandeep
>> You need to wait for cyg_lwip_sequential_init() to return before creating
>> user threads.
> That should be happening since I'm calling cyg_lwip_sequential_init() before
> even creating my own thread!
> cyg_lwip_thread_new( "My thread", m_main, (void *)"My thread",
> my_stack, 0x1000, 5 );
> I'll enable more debugs to see where it's getting stuck.
I think I've partially fixed the issue. While going through the default config
I noticed that the TCPIP thread's default priority is set to 8. Which was lower
than my threads prio - 5.
After changing it to 2, it's able to find the interface (et0) with all
the right settings.
Now another problem has cropped up! :) Sorry.
My app's actually a DHCP server. So it receives DHCP packets with 0.0.0.0
as the src IP. However, the stack is dropping them with the following message:
ip_input: iphdr->dest 0xffffffff netif->ip_addr 0x101010b (0xffffff,
ip_input: packet accepted on interface et
ip_input: packet source is not valid.
I've enabled the following in my config:
* Support broadcast filter
* Receive support
Is anything else needed?
Just one more thing:
While tracing the path from cyg_lwip_sequential_init() to see what
all happens, I saw that
we end up calling lwip_init() twice!
Once in cyg_lwip_sequential_init() and then again in tcpip_init().
Why do we do it twice? The only function called between these 2 calls is
I think we can remove one of these. Or am I missing something?
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