From: wang dengyi <dy_wang@yahoo.com>
To: linuxppc-embedded@ozlabs.org
Subject: lite5200b ethernet statistics always is 0
Date: Wed, 31 Jan 2007 09:24:10 -0800 (PST) [thread overview]
Message-ID: <291223.31248.qm@web51908.mail.yahoo.com> (raw)
Hi,
On my development board:lite5200b, All value from the
ethernet statistics is 0. Please see the ifconfig
output at the end of my email.
The CPU is MPC5200b and the kernel is 2.4.14.
I checked the driver code:
linux/drivers/net/fec_mpc52xx/fec.c. The get_stats()
function looks fine. The function read the statistics
register using in_be32() function. But it always
returns 0. The following line is my code to print the
value from the register. The output is 0 for the
register.
printk(KERN_ERR "%s:%d: rmon_r_octest: %x\n",
__FUNCTION__, __LINE__, in_be32(&fec->rmon_r_octets));
Any idea, how do I fix it?
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr
CA:2A:AA:AB:EA:2A
UP BROADCAST RUNNING MULTICAST MTU:1500
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:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:43
Thanks in advance.
Regards,
Dengyi Wang
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