[Click] Where can I get a correct gen_config_roofnet.sh?

[Juncheol Park]

Hi,

Using Wireshark, I observed more on what's happening.

I installed a click router (kernel mode) at a ping sender node only,
using a click config file generated by gen_config_roofnet.sh, 
which is minimally modified according to my network setup.
Then, at a receiver node (without installing any click), 
I run tshark to sniff packets on ath0 as follows. It turns out that 
basically received packets are garbled.

# tshark -i ath0
Capturing on ath0
  0.000000 00:00:00_00:3c:00 -> 00:00:00_00:00:00 FC [Malformed Packet]
  2.961318 00:00:00_00:3c:00 -> 00:00:00_00:00:00 FC [Malformed Packet]
  5.212191 00:00:00_00:3c:00 -> 00:00:00_00:00:00 FC [Malformed Packet]
  5.997915 00:00:00_00:3c:00 -> 00:00:00_00:00:00 FC [Malformed Packet]
4 packets captured

Is there anyone who experiences similar problems?
Any clues for them?

Thanks,

Jun


===================================
Juncheol Park
MEB #2172, 801-587-3977
School of Computing
University of Utah

On Tue, 1 May 2007, Juncheol Park wrote:

> 
>  Hi,
> 
>  I'm not sure if this question probably had to be put on Roofnet
>  mailing list, but it is about the file included in the click.
> 
>  I'm using the latest releases of roofnet, click and madwifi-ng.
>  I have barely installed all three packages on FC4 (linux-2.6.16.13).
>  Actually, it took unnecessarily too much time mainly due to out-of-date 
>  wiki installation guide of Roofnet.
>  I also have validated if the installed click is properly working
>  using simple examples (KernelTun, etc). Seems ok.
> 
>  Then, I found the file gen_config_roofnet.sh at CLICKDIR/conf/wifi/
>  may be buggy or incomplete.
>  A ping between two roofnet nodes does not work out
>  although I adjusted the file for kernel mode click according to my 
>  network interface setup (e.g. ath3 -> ath0, comment out some setups
>  that had been already made like ifconfig ath0 up).
>  I tested the ping using either ath0's ip addr or srcr1's ip addr.
>  Neither works (simply no response with each other).
> 
>  I believe I correctly set up all required parameters related to wireless 
>  interface such as channel number (freq), ssid, mode, etc as follows.
>  I also had installed ath_pci using:  "modprobe ath_pci autocreate=adhoc".
> 
> ifconfig ath0
> ===============================================================
> ath0      Link encap:Ethernet  HWaddr 00:09:5B:93:0B:14  
>           inet addr:10.1.1.2  Bcast:10.1.255.255  Mask:255.255.0.0
>           inet6 addr: fe80::209:5bff:fe93:b14/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0 
>           RX bytes:0 (0.0 b)  TX bytes:1476 (1.4 KiB)
> 
> c.f.)  Another machine has simply a different IP address of 10.1.1.3.
> 
> ifconfig srcr1
> ===============================================================
> srcr1     Link encap:Ethernet  HWaddr 00:09:5B:93:0B:14  
>           inet addr:5.147.11.20  Bcast:5.255.255.255  Mask:255.0.0.0
>           inet6 addr: fe80::209:5bff:fe93:b14/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:0 (0.0 b)  TX bytes:468 (468.0 b)
> 
> iwconfig ath0
> ===============================================================
> ath0      IEEE 802.11a  ESSID:"lan0_27595"  
>           Mode:Ad-Hoc  Frequency:5.24 GHz  Cell: 02:09:5B:93:0B:14   
>           Bit Rate:0 kb/s   Tx-Power:15 dBm   Sensitivity=0/3  
>           Retry:off   RTS thr:off   Fragment thr:off
>           Encryption key:off
>           Power Management:off
>           Link Quality=23/94  Signal level=-73 dBm  Noise level=-96 dBm
>           Rx invalid nwid:105  Rx invalid crypt:0  Rx invalid frag:0
>           Tx excessive retries:0  Invalid misc:0   Missed beacon:0
> 
> route
> ================================================================
> Kernel IP routing table
> Destination     Gateway   Genmask         Flags Metric Ref Use Iface
> 155.98.36.0     *       255.255.252.0   U     0      0       0 eth0
> 10.1.0.0        *       255.255.0.0     U     0      0       0 ath0
> 169.254.0.0     *       255.255.0.0     U     0      0       0 lo
> 5.0.0.0         *       255.0.0.0       U     0      0       0 srcr1
> 6.0.0.0         *       255.0.0.0       U     0      0       0 srcr2
> default control-router. 0.0.0.0         UG    0      0       0 eth0
> ================================================================
> c.f.) Since I'm using Emulab wireless nodes, the default router 
> should not be changed as above.
> 
>  Any tip or comment would be greatly appreciated.
> 
>  Thanks,
> 
>  Jun
> 
> ===================================
> Juncheol Park
> MEB #2172, 801-587-3977
> School of Computing
> University of Utah
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