2008-10-15 21:37:38 usbnet on bf527 unstable????

zc liang (CHINA)

Message: 63742

I have tested the usbnet on bf527.The usbnet can be found on my pc.But there is a bug.

THE TEST:

root:/> modprobe g_ether host_addr=00:dc:c8:f7:75:05 dev_addr=00:dd:dc:eb:6d:f1

musb_hdrc: version 6.0, pio, peripheral, debug=0

musb_hdrc: USB Peripheral mode controller at ffc03800 using PIO, IRQ 59

usb0: Ethernet Gadget, version: May Day 2005

usb0: using musb_hdrc, OUT ep6out IN ep5in STATUS ep1in

usb0: MAC 00:dd:dc:eb:6d:f1

usb0: HOST MAC 00:dc:c8:f7:75:05

usb0: RNDIS ready

root:/> usb0: high speed config #1: 100 mA, Ethernet Gadget, using CDC Ethernet

root:/> ifconfig usb0 192.168.1.111 up

root:/> ping 192.168.1.222

PING 192.168.1.222 (192.168.1.222): 56 data bytes

64 bytes from 192.168.1.222: seq=0 ttl=64 time=4.000 ms

64 bytes from 192.168.1.222: seq=1 ttl=64 time=0.000 ms

64 bytes from 192.168.1.222: seq=2 ttl=64 time=0.000 ms

--- 192.168.1.222 ping statistics ---

3 packets transmitted, 3 packets received, 0% packet loss

round-trip min/avg/max = 0.000/1.333/4.000 ms

root:/> mount -o nolock,rsize=1024,wsize=1024 192.168.1.222:/tmp /mnt/

root:/> cp /mnt/3MB-file /tmp/

nfs: server 192.168.1.222 not responding, still trying

Another test:

bf527 ping to pc while ping form pc with "-f" ,after an hour(about), found packet lossing.

The kernel my bf527 used is 2.6.26.5-ADI-2009R1.

Is it unstable for usbnet on bf527?

QuoteReplyEditDelete

2008-10-15 21:48:33 Re: usbnet on bf527 unstable????

Mike Frysinger (UNITED STATES)

Message: 63746

i have never found a system that can respond completely to `ping -f` without dropping a packet ... so without any real information, that test isnt really valid

as for nfs, it looks like you're using NFSv2/UDP ... that's an awful idea as it's completely unreliable (has nothing to do with the Blackfin -- try it on any system and you'll find it unreliable). please read the NFS documentation:

http://docs.blackfin.uclinux.org/doku.php?id=uclinux-dist:nfs

QuoteReplyEditDelete

2008-10-16 22:37:19 Re: usbnet on bf527 unstable????

zc liang (CHINA)

Message: 63818

So,how do I test that I can make sure the usbnet work stable?

I compare Emac-net with usbnet on bf527.The emac test fine.

The nfs I used is nfsv3/udp.But I also test nfs over tcp.

Moreover, I tested the nfs with the option "timeo=600" "sync".

The results are the same except that the testing file is less than 1MB.

root:/> ls /mnt/800.bmp4 -l

-rw-r--r-- 1 1000 1000 768008 Oct 16 2008 /mnt/800.bmp4