ath6kl and ieee80211n

Drasko DRASKOVIC drasko.draskovic at gmail.com
Thu Oct 31 11:29:02 EDT 2013


HI all,
I have AR6004 USB dongle connected to Linux kernel 3.10, and am
testing latest hostapd.

I noticed that I was able to put the dongle in the AP mode only for
not-n mode (a or g).

Enabling both of these options:
hw_mode=g
ieee80211n=1

gives an error like this on starting:

random: Trying to read entropy from /dev/random
Configuration file: /home/drasko/hostapd.conf
HT (IEEE 802.11n) with WPA/WPA2 requires CCMP/GCMP to be enabled,
disabling HT capabilities
rfkill: initial event: idx=0 type=1 op=0 soft=0 hard=0
rfkill: initial event: idx=1 type=1 op=0 soft=0 hard=0
rfkill: initial event: idx=2 type=2 op=0 soft=0 hard=0
rfkill: initial event: idx=5 type=1 op=0 soft=0 hard=0
nl80211: Using driver-based roaming
nl80211: Supports Probe Response offload in AP mode
nl80211: Disable use_monitor with device_ap_sme since no monitor mode
support detected
nl80211: interface wlan3 in phy phy3
nl80211: Add own interface ifindex 6
nl80211: Set mode ifindex 6 iftype 3 (AP)
nl80211: Setup AP - device_ap_sme=1 use_monitor=0
nl80211: Subscribe to mgmt frames with AP handle 0x1441480 (device SME)
nl80211: Register frame type=0xd0 nl_handle=0x1441480
nl80211: Register frame match - hexdump(len=0): [NULL]
nl80211: Enable Probe Request reporting nl_preq=0x14414c0
nl80211: Register frame type=0x40 nl_handle=0x14414c0
nl80211: Register frame match - hexdump(len=0): [NULL]
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
nl80211: Regulatory information - country=FR
nl80211: 2402-2482 @ 40 MHz
nl80211: 2402-2482 @ 20 mBm
nl80211: 5170-5250 @ 40 MHz
nl80211: 5170-5250 @ 20 mBm
nl80211: 5250-5330 @ 40 MHz
nl80211: 5250-5330 @ 20 mBm
nl80211: 5490-5710 @ 40 MHz
nl80211: 5490-5710 @ 27 mBm
nl80211: 57240-65880 @ 2160 MHz
nl80211: 57240-65880 @ 40 mBm
nl80211: Added 802.11b mode based on 802.11g information
Completing interface initialization
Mode: IEEE 802.11g  Channel: 7  Frequency: 2442 MHz
DFS 0 channels required radar detection
nl80211: Set freq 2442 (ht_enabled=1, vht_enabled=0, bandwidth=20 MHz,
cf1=2442 MHz, cf2=0 MHz)
nl80211: Failed to set channel (freq=2442): -22 (Invalid argument)
Could not set channel for kernel driver
wlan3: Unable to setup interface.
wlan3: Flushing old station entries
nl80211: flush -> DEL_STATION wlan3 (all)
wlan3: Deauthenticate all stations
nl80211: sta_remove -> DEL_STATION wlan3 ff:ff:ff:ff:ff:ff --> 0 (Success)
wpa_driver_nl80211_set_key: ifindex=6 (wlan3) alg=0 addr=(nil)
key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=6 (wlan3) alg=0 addr=(nil)
key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=6 (wlan3) alg=0 addr=(nil)
key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=6 (wlan3) alg=0 addr=(nil)
key_idx=3 set_tx=0 seq_len=0 key_len=0
nl80211: Skip disabling of Probe Request reporting
nl_preq=0x8888888889cc9c49 while in AP mode
netlink: Operstate: linkmode=0, operstate=6
nl80211: Set mode ifindex 6 iftype 2 (STATION)
nl80211: Disable Probe Request reporting nl_preq=0x8888888889cc9c49
nl80211: Unsubscribe mgmt frames handle 0x8888888889cc9c09 (AP
teardown (dev SME))
Failed to initialize interface

I have tried several channels - all were rejected with the same message.

Any idea where these error messages come from?

How can I obtain more debugging messages in hostapd to examine this issue?


Best regards,
Drasko


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