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Old 04-11-2007, 05:02 AM   #1
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Registered: Sep 2006
Location: Romania
Distribution: Gentoo
Posts: 14

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br2684ctl Invalid argument

I try to configure a Speedtouch 330 ADSL modem on USB. I'm working in an embedded environment using OpenWrt distribution, with kernel.

Here are the dmesg messages when I plugin the modem:
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver speedtch
speedtch 1-2:1.0: found stage 1 firmware speedtch-1.bin
speedtch 1-2:1.0: found stage 2 firmware speedtch-2.bin
ATM dev 0: ADSL line is synchronising
ATM dev 0: ADSL line is up (2560 kb/s down | 512 kb/s up)
Everything looks fine, but I can't get the br2684ctl to work:
root@OpenWrt:~# br2684ctl -b -c 0 -a 0.35
RFC1483/2684 bridge: Interface "nas0" could not be created, reason: File exists

RFC1483/2684 bridge: Communicating over ATM 0.0.35, encapsulation: LLC

RFC1483/2684 bridge: Could not configure interface:Invalid argument
With dmesg spiting:
usbcore: registered new interface driver speedtch
ATM dev 0: ADSL line is synchronising
br2684: br2684_create
br2684: registered netdev nas0
br2684_create: register_netdev failed
Everything I though was necessary I've compiled as modules:
root@OpenWrt:~# lsmod 
Module                  Size  Used by    Tainted: P  
br2684                  5616  0 
speedtch               10000  0 
usbatm                 13952  1 speedtch
uhci_hcd               18480  0 
ath_pci                68288  0 
wlan_xauth               480  0 
wlan_wep                4320  0 
wlan_tkip               9984  0 
wlan_ccmp               5856  0 
wlan_acl                2208  0 
ath_rate_sample         8000  1 ath_pci
ath_hal               222016  2 ath_pci,ath_rate_sample
wlan_scan_sta           8224  0 
wlan_scan_ap            2720  0 
wlan                  135488  9 ath_pci,wlan_xauth,wlan_wep,wlan_tkip,wlan_ccmp,wlan_acl,ath_rate_sample,wlan_scan_sta,wlan_scan_ap
ip_conntrack_tftp       1680  0 
ip_nat_irc               960  0 
ip_conntrack_irc        2832  1 ip_nat_irc
ip_nat_ftp              1696  0 
ip_conntrack_ftp        4016  1 ip_nat_ftp
ppp_async               9504  0 
ppp_generic            20480  1 ppp_async
slhc                    5472  1 ppp_generic
crc_ccitt               1024  1 ppp_async
atm                    43056  2 br2684,usbatm
usbcore               102016  4 speedtch,usbatm,uhci_hcd
switch_robo             4048  0 
switch_core             5056  1 switch_robo
diag                    7696  0
Do you have any idea why I get the "Invalid argument" message from br2684ctl?

PS: the same line with the same modem works fine on my desktop PC.

Last edited by kenjiru; 04-19-2007 at 10:06 AM. Reason: detailed dmesg output
Old 04-14-2007, 03:51 AM   #2
LQ Newbie
Registered: Sep 2006
Location: Romania
Distribution: Gentoo
Posts: 14

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I still haven't solved the problem


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