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

[bobbyb]

I am not getting any traffic from my board to show up in wireshark so no ARP
requests. do you mean the driver on the board or the driver on my pc or
possibly both?


Kieran Mansley wrote:
> 
> On Fri, 2009-09-18 at 07:36 -0700, bobbyb wrote:
>> To familiarize myself with lwip, i've been trying to use it to send one
>> single udp packet in raw mode from xilinx virtex5 board to the connected
>> pc.
>> My code is based off the sample tftp code but i can't seem to get it to
>> work. The transmit light never blinks and wireshark never receives any
>> packets from the board. I've attached my code and the debug output. does
>> anything look wrong with this? please help!
> 
> You packet causes the stack to try to use ARP to find the MAC address of
> the other end of the connection.  Your packet is then queued waiting for
> an ARP response from the other end.  If you don't see any ARP packets on
> the network as a result, then there is probably something wrong with
> your driver.  The ARP packet should have been sent using the
> netif->linkoutput() function, so this is where I would start looking.
> 
> Kieran 
> 
> 
> 
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