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* More on Ebony and Ethernet
@ 2003-07-18 18:25 Brian Padalino
  0 siblings, 0 replies; only message in thread
From: Brian Padalino @ 2003-07-18 18:25 UTC (permalink / raw)
  To: Linuxppc-Embedded

I am able to give a bit more information about my ethernet experience with
the Ebony board.  I am still having a lot of trouble getting the IBM OCP
ethernet drivers to work correctly.  It appears that it will transmit
packets just fine, but it does not recieve them properly at all.

I see this by configuring my Ebony board with the IP and ping
a development machine at  On the development machine, I have
tcpdump running sniffing for packets coming from or going to the Ebony

I find that after about 8 packets are sent from pings, the driver just stops
sending packets out at all!!

Here is my ifconfig eth0:

# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:04:AC:E3:22:DA
          inet addr:  Bcast:  Mask:
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:0 (0.0 b)  TX bytes:1134 (1.1 kb)

The rx packets for the lo device will increase as I keep doing the pings,
but after 8 pings out -- the driver for eth0 comes up with nothing.

14:25:26.413840 arp who-has tell
14:25:26.413876 arp reply is-at 0:3:47:b7:54:0
14:25:27.397956 arp who-has tell
14:25:27.397981 arp reply is-at 0:3:47:b7:54:0
14:25:28.397962 arp who-has tell
14:25:28.397988 arp reply is-at 0:3:47:b7:54:0
14:25:37.547904 arp who-has tell
14:25:37.547931 arp reply is-at 0:3:47:b7:54:0
14:25:38.538544 arp who-has tell
14:25:38.538576 arp reply is-at 0:3:47:b7:54:0
14:25:39.538543 arp who-has tell
14:25:39.538573 arp reply is-at 0:3:47:b7:54:0
14:25:43.487944 arp who-has tell
14:25:43.487971 arp reply is-at 0:3:47:b7:54:0
14:25:44.477924 arp who-has tell
14:25:44.477947 arp reply is-at 0:3:47:b7:54:0

I am working off of the linuxppc_2_4_devel tree, my next step is to go for
strictly the linuxppc_2_4 standard tree and see if that works out.

Does anyone else have ANY ideas?


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2003-07-18 18:25 More on Ebony and Ethernet Brian Padalino

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