Re: [lwip-users] transmit data using udp in raw mode

[Dick Balaska]

Have you stepped through netif/etharp.c to make sure it is doing its thing?
The very first thing you should see going out the wire is a "gratuitous 
arp" via etharp.c.
When you checked that netif->linkoutput() was being called, who was 
calling it?  It should be etharp first.
Set wireshark to look at all arp messages, NOT filtered by your mac 
address, in case that is stuffed up.

dik

Am 9/18/2009 2:07 PM, also sprach bobbyb:
> Thank you for pointing me in the right direction. I did exactly what you said
> - traced from netif->linkout() as far as i could (that is, to the point
> where the command to send the packet is written to the appropriate register
> and the hardware takes over). It seems to work fine, no errors or strange
> statuses.  Any idea what else it could be? Again, thank you for all your
> effort.
>
>
> Kieran Mansley wrote:
>   
> > On Fri, 2009-09-18 at 08:30 -0700, bobbyb wrote:
> >     
> > > What can i do if that is the problem? I tried switching to the generic
> > > driver
> > > and that doesn't work at all.
> > >       
> > Trace through the code till you find out what's going wrong.  E.g. first
> > check that netif->linkoutput() is getting called.  If it is, follow the
> > packet through the driver until it either makes it out onto the wire or
> > you find the problem.
> >
> > Kieran
> >
> >
> >
> > _______________________________________________
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> >
> >
> >     
>
>