On 7/6/07, Michael Wu <flamingice@xxxxxxxxxxxx> wrote:
On Thursday 05 July 2007 06:32, Jon Smirl wrote:
> I'm debugging this because I've been trying for two days without
> success to get monitor mode to work. I have the adapter in promisc
> mode and the interface in monitor mode. I can see directed and
> broadcast traffic with tcpdump, but not directed traffic for other
> nodes.
>
Outgoing packets from the wireless adapter are not reported unless you have
Johannes' radiotap patches. Is that what you're talking about?
No, At the interface I am only seeing incoming packets that are to my
mac address or a multicast address. It is like the interface is not in
promiscous mode, but ifconfig shows PROMISC set.
Packets to other mac addresses are arriving at the receiver and I can
trace them up to ieee80211_rx_monitor and onto netif_rx. Something in
the higher level networking code is filtering out these promiscuous
packets; but I don't know what was is doing it. It's not iptables
which it isn't loaded.
My ethernet adapters work fine in promiscuous mode. I have the same
wireless PROMISC problem on both ralink and zd1211 adapters.
Using the wireless-dev tree and wireless_tools.29. Wireless interface
is in monitor mode.I'm using tcpdump -i wlan0 -v to to look for the
packets.
wlan0 Link encap:UNSPEC HWaddr
00-15-E9-2D-76-57-00-00-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:135 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:11610 (11.3 KiB) TX bytes:0 (0.0 b)
wlan0 IEEE 802.11g Mode:Monitor Frequency:2.457 GHz
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
--
Jon Smirl
jonsmirl@xxxxxxxxx
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