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

[bobbyb]

i started in etharp.c where netif->linkout is being called by etharp_raw. i
then traced it xlltemacif.c, xlltemacif_sdma.c, xlldma_bdring.c in that
order. In bdring.c it seems to succesfully write to the register tell the
temac to begin processing the packet. Yet, i get nothing in wireshark.


Dick Balaska wrote:
> 
> 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
>>>
>>>
>>>
>>> _______________________________________________
>>> lwip-users mailing list
>>> address@hidden
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>>>
>>>
>>>     
>>
>>   
> 
> 
> 
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> 

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