About AT91RM9200's EMAC driver

[Thomas Doerfler]

Hi,

just a basic question: how is your sniffer attached to the 
network? 

If you are running the sniffer on your "host", which is directly 
involved in the real ethernet communication with your target, 
everything should work. 

If your "sniffer" is a third machine (not the RTEMS system and 
not the host), usually the network switches will ensure that any 
communication between your RTEMS target and your host will be 
invisible to the sniffer. Switches will send ethernet packets 
only to the network trunks which lead to the system specified in 
the ethernet MAC address. The only exception to this rule are 
broadcast frames.

wkr,
Thomas.

> Hi, Lars
> 
> > The network driver in csb337 bsp assumes that you have a MAC address 
> > in the EMAC. Have you verified that U-BOOT puts a MAC address in the 
> > EMAC before loading rtems?
> 
> Yes, I set MAC address at the init.c before initialize the network.
> and from running network-demos-4.6.2, I can see status like below,
> and I think the config is ok.
> I'm wonder why the interrupt is always zero, like my board never
> receive a packet at all.
> 
> ---------------------------------------------------------------------------
> Destination     Gateway/Mask/Hw    Flags     Refs     Use Expire Interface
> default         192.168.0.1        UGS         0        0      0 eth0
> 192.168.0.0     255.255.255.0      U           0        0      1 eth0
> 192.168.0.1                        UHL         1        0      1 eth0
> 192.168.0.255   FF:FF:FF:FF:FF:FF  UHL         0       18      0 eth0
> ************ MBUF STATISTICS ************
> mbufs:2048    clusters: 256    free: 256
> drops:   0       waits:   0  drains:   0
>       free:2047          data:1           header:0           socket:0       
>        pcb:0           rtable:0           htable:0           atable:0       
>     soname:0           soopts:0           ftable:0           rights:0       
>     ifaddr:0          control:0          oobdata:0       
> 
> ************ INTERFACE STATISTICS ************
> ***** eth0 *****
> Ethernet Address: 00:01:02:03:04:08
> Address:192.168.0.144   Broadcast Address:192.168.0.255   Net 
> mask:255.255.255.0   
> Flags: Up Broadcast Running
> Send queue limit:50   length:0    Dropped:0       
>  Total Interrupts:0           Rx Interrupts:0                   
> Giant:0               Non-octet:0       
>           Bad CRC:0               Collision:0                  Missed:0       
>     Tx Interrupts:0                  Deferred:0               Lost 
> Carrier:0       
> Single Collisions:0       Multiple Collisions:0       Excessive 
> Collisions:0       
>  Total Collisions:0            Late Collision:0                   
> Underrun:0       
>   Raw output wait:0       
> 
> ************ IP Statistics ************
>     total ip packets generated here        3030
>   datagrams successfully fragmented          12
>            output fragments created          72
> 
> ************ ICMP Statistics ************
> 
> ************ UDP Statistics ************
>                total output packets        3030
> 
> ************ TCP Statistics ************
> 
> ----------------------------------------------------------------------------
> 
> > Btw, which version of u-boot are you using?
> > http://mmd.ath.cx/csb337-boot/ ?
> 
> I'm using U-BOOT 1.1.1 (at91rm9200dk_config) ported by myself,
> running from ATMEL's boot. and actually I just changed the code
>  about flash chip.
> 
> Regards,
> Yanjun Luo.
> 
> 
> 
> On Tue, 30 Nov 2004 10:14:22 +0100, Lars Munch wrote
> > On Tue, Nov 30, 2004 at 04:01:57PM +0800, Yanjun Luo wrote:
> > > Hi Jay,
> > > I just test AT91RM9200's EMAC driver from your CSB337 BSP.
> > > I use network-demos to test it. Whatever TCP or UDP packet
> > > I send, I can't catch it with sniffer. It seems that my board
> > > have not send anything out.
> > > 
> > > My hardware is working because I use U-BOOT with TFTP to download
> > > my RTEMS image, and it works smoothly.
> > > 
> > > Do you have any suggestions to test/verify it?
> > > 
> > > Anyone's any hints are welcome.
> > > 
> > > BTW, where can I find a ping(client) to test my system?
> > > 
> > > Regards,
> > > Yanjun Luo.
> > >
> > 
> > Hello Yanjun
> > 
> > The network driver in csb337 bsp assumes that you have a MAC address 
> > in the EMAC. Have you verified that U-BOOT puts a MAC address in the 
> > EMAC before loading rtems?
> > 
> > Btw, which version of u-boot are you using?
> > http://mmd.ath.cx/csb337-boot/ ?
> > 
> > Regards
> > Lars Munch

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Thomas Doerfler           Herbststrasse 8
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