On Monday, April 23, 2012 06:27:03 AM Janusz Dziedzic wrote: > This is a scenario: > AP <--> STA1 (channel 6) > STA2 == carl_monitor (channel 6) ah, I assumed you were running the STA & Monitor on the same device [which is possible for most mac80211 devices!]. > This is what I can see on STA1: > # iperf -c 192.168.254.1 -t 100 -i 5 > ------------------------------------------------------------ > Client connecting to 192.168.254.1, TCP port 5001 > TCP window size: 512 KByte (default) > ------------------------------------------------------------ > [ 3] local 192.168.254.181 port 46048 connected with 192.168.254.1 port 5001 > [ ID] Interval Transfer Bandwidth > [ 3] 0.0- 5.0 sec 17.4 MBytes 29.2 Mbits/sec > [ 3] 5.0-10.0 sec 19.6 MBytes 32.9 Mbits/sec > [ 3] 10.0-15.0 sec 20.4 MBytes 34.2 Mbits/sec > > =====> here I setup carl monitor on second PC, like this: > =====> iw dev wlan0 set type monitor > =====> iw dev wlan0 set freq 2437 > =====> ifconfig wlan0 up > > [ 3] 40.0-45.0 sec 2.38 MBytes 3.98 Mbits/sec > [ 3] 45.0-50.0 sec 2.50 MBytes 4.19 Mbits/sec > [ 3] 50.0-55.0 sec 3.00 MBytes 5.03 Mbits/sec > > Seems I don't even need to start wireshark here ... and see this TP drop. Well, there's the "AR9170_MAC_RX_CTRL_ACK_IN_SNIFFER = bit (30)" in "AR9170_MAC_REG_RX_CONTROL = (0x1c3c40)". If you have enabled CONFIG_CARL9170_DEBUGFS build option, you can disable this bit (on the fly) by executing: echo "0x1c3c40 0x10000003" > /sys/kernel/debug/ieee80211/phyX/carl9170/hw_iowrite32 (phyX needs to be the phy dev of the carl9170 instance) and there's the AR9170_MAC_SNIFFER_ENABLE_PROMISC (bit 0) in AR9170_MAC_REG_SNIFFER (0x1c3674). Which can be disabled in a similar way: echo "0x1c3674 0x02000000" > /sys/... Regards, Christian -- 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
