Re: Xilinx EMAC - cannot ping

Hi Shamile,

          TX packets:7 errors:0 dropped:0 overruns:0

...

4) interrupts
bash-2.05# cat /proc/interrupts
           CPU0
 30:       8046     Xilinx INTC  Level  serial
 31:          7     Xilinx INTC  Level  eth0
BAD:          0

5) Running ethereal on host which I am pinging to, I can
see ARP requests from my linux target sent to the host but
nothing is sent back to target.

From the diagnostic results cited above it looks like the
problem is in your host: the tagret sends 7 ARP requests
which are decoded correctly (I assume this because neither
you nor you host complain about ARP requests contents), but
host doesn't respond to them.

I would check the ARP requests contents and then your host settings.

Best regards,
Andrei

Shamile Khan wrote:

Hi,

I have a Memec FG456 evaluation board with P160 module. I
am using Xilinx ethernet core (with default configuration
in mhs file) and the open source linux driver for Xilinx
EMAC. It seems that the ethernet device is detected
correctly but I cannot seem to ping any machine in my
network. I can ping myself though. Here are some diagnostic
results.

1) insmod the driver
bash-2.05# insmod a.out
eth0: Xilinx EMAC #0 at 0xFEFE8000 mapped to 0xC3008000,
irq=31

2)  ifconfig
bash-2.05# ifconfig eth0 192.168.0.55
bash-2.05# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:60:08:27:11:7B
          inet addr:192.168.0.55  Bcast:192.168.0.255
Mask:255.255.255.0
          inet6 addr: fe80::260:8ff:fe27:117b/10 Scope:Link
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0
frame:0
          TX packets:7 errors:0 dropped:0 overruns:0
carrier:0
          collisions:0 txqueuelen:100
          RX bytes:0 (0.0 b)  TX bytes:414 (414.0 b)
          Interrupt:31

lo        Link encap:Local Loopback
          LOOPBACK  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0
frame:0
          TX packets:0 errors:0 dropped:0 overruns:0
carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0
frame:0
          TX packets:0 errors:0 dropped:0 overruns:0
carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

3) bash-2.05# mii-tool -v
eth0: negotiated 100baseTx-FD flow-control, link ok
  product info: vendor 00:10:18, model 30 rev 4
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD
10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD
10baseT-HD flow-control  link partner: 100baseTx-FD
100baseTx-HD 10baseT-FD 10baseT-HD flow-control

4) interrupts
bash-2.05# cat /proc/interrupts
           CPU0
 30:       8046     Xilinx INTC  Level  serial
 31:          7     Xilinx INTC  Level  eth0
BAD:          0

5) Running ethereal on host which I am pinging to, I can
see ARP requests from my linux target sent to the host but
nothing is sent back to target.

Any ideas on the source of the problem?

Regards,
Shamile

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