Re: [Discuss-gnuradio] Problem with BBN's 802.11 MAC

[Dola Saha]

When I run
./bbn_80211b_rx.py -v

I get the following output:

-------------------------------------------------
Bits Per Encoded Sample = 8
adc frequency =  64000000
decimation frequency =  16
input_rate =  4000000
gain =  45.0
desired freq =  2400000000.0
baseband frequency 2396000000.0
dxc frequency -4000000.0
Samples per data bit =  8
> > > gr_fir_ccf: using SSE
-------------------------------------------------

No packet is captured.

However, when I use ./bbn_80211b_tx.py to transmit packets, I can
capture those packets and the output of ./bbn_80211b_rx.py -v is as
follows (with ./bbn_80211b_tx.py run in another terminal)

--------------------------------------------------------------------
Bits Per Encoded Sample = 8
adc frequency =  64000000
decimation frequency =  16
input_rate =  4000000
gain =  45.0
desired freq =  2400000000.0
baseband frequency 2396000000.0
dxc frequency -4000000.0
Samples per data bit =  8
> > > gr_fir_ccf: using SSE
uOPKT: 1, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=6981528, rate=1 Mbps
PKT: 2, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=6993624, rate=1 Mbps
uOuOuOPKT: 3, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8045696,
rate=1 Mbps
PKT: 4, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8057792, rate=1 Mbps
PKT: 5, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8069888, rate=1 Mbps
PKT: 6, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8139992, rate=1 Mbps
PKT: 7, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8164184, rate=1 Mbps
PKT: 8, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8188376, rate=1 Mbps
PKT: 9, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8212568, rate=1 Mbps
PKT: 10, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8236760, rate=1 Mbps
PKT: 11, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8335648, rate=1 Mbps
PKT: 12, len=1477, rssi=-19, src=20:61:6e:64:20:73, time=8347744, rate=1 Mbps
-------------------------------------------------------------------------------------------------

The packet counts are not from original code, I printed them.




Thanks,
Dola




On 4/4/07, Greg Troxel <address@hidden> wrote:
> Could you explain more precisely what you are doing, and what happens?
>
> I have run the code under NetBSD with modified tap(4) driver that
> handles 802.11 in addition to Ethernet.  I am not clear on the state of
> 802.11 support in the Linux tap driver.
>
> --
>     Greg Troxel <address@hidden>