Hello,
I'm seeing a problem with the carl driver. If I change channels
repeatedly on the 2.4ghz band, monitoring (e.g. tcpdump) will
eventually halt. I've seen this on various versions of the carl
driver/firmware (both from 1.9.4 to 1.9.7)
After monitoring has hung, changing to a 5ghz channel, causes
monitoring to resume. Bouncing the interface (ip link set mon0
down/up) also fixes it.
Here are some steps to reproduce:
# setup interface
iw wlan0 interface add mon0 type monitor
ip link set mon0 up
# start channging channels
while true ; do for i in 1 6 11 ; do iw mon0 set channel $i ; \
sleep .250 ; done ; done
In a second terminal:
tcpdump -i mon0
Wait until tcpdump stops printing. I've seen the failure rate vary
greatly, sometime minutes, sometime hours, but usually less then an
hour.
Regards,
Marco Fonseca
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
