[Olsr-users] DLEP Radio test: Can mac80211_hwsim help?

[Vigneswaran R]

On 12/17/2014 04:01 PM, Vigneswaran R wrote:
> Hi,
>
> I am running DLEP radio on a linux host and DLEP router inside a 
> virtual machine (VM) running on that host. The VM's host side tap 
> interface is bridged with a (simulated) wifi device on the host.
>
> I am able to query DLEP radio for layer2info (as I mentioned earlier 
> in this mail chain). However, how to verify whether the radio and 
> router components are communicating and sharing data?
>
> Also, do we need to assign IP to any of the interfaces on the radio 
> side (wlan, tap, bridge)? as of now, I haven't set IP address to any 
> of them.

My test setup looks like this,

+----------------------------------------+
| Host                                   |
|                                        |
| +-------------+        +-------------+ |
| |VM1          |        |VM2          | |
| |             |        |             | |
| |             |        |             | |
| |(dlep_router)|        |(dlep_router)| |
| |             |        |             | |
| |             |        |             | |
| |    eth0     |        |     eth0    | |
| +-----||------+        +------||-----+ |
|   +--tap0                    tap1--+   |
|   |                                |   |
|BR0|                                |BR1|
|   |                                |   |
|   +-wlan0  [mac80211_hwsim]  wlan1-+   |
|   (wlan0.sta1)                 |       |
|       |                        |       |
|       \~~~~~~~~~~~~~~~~~~~~~~~~/       |
|   (hostapd)            (wpa_supplicant)|
|                          (dlep_radio)  |
+----------------------------------------+

I am running OLSRv2 (with dlep_router plugin loaded) on VM1 and VM2. The 
VMs are able to ping each other and OLSRv2 is able to establish routes.

For testing, I am running dlep_radio on the host, and configured to 
collect information about wlan1 and send via tap1 ([dlep_radio=tap1] 
source wlan1). I hope, this is equivalent to, having DLEP supported 
radio device for VM2.

On the host/radio side, I am able to query the dlep_radio and getting 
the following information.

# echo "/layer2info interface"|nc 127.0.0.1 2009
wlan1    25    02:00:00:00:01:00                    2.412 GHz    0 Hz    
20 MHz    0  Hz

On the VM2/router side, how to check whether the DLEP session is 
established, radio is sharing the Layer2 details (or whatever details it 
supposed to share) etc.? Thanks.

Vignesh

>
>
> Vignesh
>
> On 12/16/2014 02:37 PM, Vigneswaran R wrote:
>> On 12/16/2014 12:53 PM, Henning Rogge wrote:
>>> On Tue, Dec 16, 2014 at 6:27 AM, Vigneswaran R <(spam-protected)> 
>>> wrote:
>>>> I could get some information using layer2info as shown below.
>>> Yes :)
>>>
>>> (I meant the layer2info plugin when I said "layer2 viewer")
>>
>> Ok :-)
>>
>>>> # echo "/layer2info interface"|nc 127.0.0.1 2009
>>>> wlan1    74    02:00:00:00:01:00                    2.412 GHz    0 
>>>> Hz    20
>>>> MHz    0  Hz
>>>>
>>>> I used the following configuration entries.
>>>>
>>>> dlep_radio.conf
>>>> ===============
>>>> [global]
>>>>          plugin          dlep_radio
>>>>          plugin          layer2info
>>>>          plugin          nl80211_listener
>>>>
>>>> [dlep_radio=tap0]
>>>>          source          wlan1
>>>>
>>>> [nl80211_listener]
>>>>          if              wlan1
>>>>          interval        1.0
>>>>
>>>> [layer2_viewer]
>>> Remove this line or replace it with "[layer2info]".
>>
>> Ok. We have to update in 
>> oonf/src-plugins/generic/dlep/README_DLEP_RADIO also. Thanks.
>>
>>
>> Vignesh
>>
>>
>
>