Re: [lwip-users] Debugging new driver

[Bastien Allibert]

With ICMP request you might also consider to pad your replies to 64bytes. They 
could be discarded.

Bastien

Le 5 juin 2013 à 18:27, "Pomeroy, Marty" <address@hidden> a écrit :

> 
> Get Wireshark installed, and look at the raw packets at the Linux box.
> 
> Also make sure your checksum configuration is right.
> 
> Marty
> 
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On
> Behalf Of Dimax
> Sent: Wednesday, June 05, 2013 10:07 AM
> To: address@hidden
> Subject: [lwip-users] Debugging new driver
> 
> Hi,
> I'm done with a coding of a new driver and have started it's debugging.
> I have started with ping.
> I have a linux box 192.168.16.31
> And my ST32 board with fixed IP configuration 192.168.16.43
> 
> I'm trying to ping from linux to my board running new driver.
> 
> On linux side I get:
> ---------------------------
> From 192.168.16.31 icmp_seq=62 Destination Host Unreachable and in
> tcpdump sequence of:
> 09:00:45.277619 ARP, Request who-has 192.168.16.43 tell 192.168.16.31,
> length 28
> 09:00:46.277617 ARP, Request who-has 192.168.16.43 tell 192.168.16.31,
> length 28 ...
> 
> On board side (my traces):
> ------------------
> 000023.072 ETH:DMA_RX SZ:64
> 000023.072 ETH:DMA_TX SZ:64
> 000024.072 ETH:DMA_RX SZ:64
> 000024.072 ETH:DMA_TX SZ:64
> 000025.080 ETH:DMA_RX SZ:64
> 000025.080 ETH:DMA_TX SZ:64
> 000026.080 ETH:DMA_RX SZ:64
> 000026.080 ETH:DMA_TX SZ:64
> 
> Looks like a ARP packets arrives to board and are processed by lwIP.
> But outcoming packets from board are dropped somewhere. Not sure if they
> get out from PHY at all or dropped on receiving linux side.
> How would you suggest to debug this?
> Thanks.
> 
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