Linux/WL1831MOD: How to enable the ACS feature?

Hi,

What version of hostapd are you using?

Best Regards,
Eyal

Hi Eyal,
we are using hostap 2.5-devel version that released from TI git repository.
thanks.

Dear Eyal

There was a mistake in the upper logs.
Please refer to the following log.

In the below log, it was supposed that an error occurs because there is no survey data.
Please let me know whether normal situation or not?

also if you have any other root cause tell me kindly.

thanks.

=======================================================

~ # hostapd -dd /data/misc/wifi/hostapd.conf
random: Trying to read entropy from /dev/random
Configuration file: /data/misc/wifi/hostapd.conf
ctrl_interface_group=0
rfkill: initial event: idx=0 type=1 op=0 soft=0 hard=0
nl80211: Supported cipher 00-0f-ac:1
nl80211: Supported cipher 00-0f-ac:5
nl80211: Supported cipher 00-0f-ac:2
nl80211: Supported cipher 00-0f-ac:4
nl80211: Supported cipher 00-14-72:1
nl80211: Supports Probe Response offload in AP mode
nl80211: Using driver-based off-channel TX
nl80211: Supported vendor command: vendor_id=0x80028 subcmd=0
nl80211: Supported vendor command: vendor_id=0x80028 subcmd=1
nl80211: Supported vendor command: vendor_id=0x80028 subcmd=2
nl80211: Supported vendor event: vendor_id=0x80028 subcmd=0
nl80211: Supported vendor event: vendor_id=0x80028 subcmd=1
nl80211: Use separate P2P group interface (driver advertised support)
nl80211: Enable multi-channel concurrent (driver advertised support)
nl80211: interface wlan0 in phy phy0
nl80211: Set mode ifindex 2 iftype 3 (AP)
nl80211: Setup AP(wlan0) - device_ap_sme=0 use_monitor=0
nl80211: Subscribe to mgmt frames with AP handle 0xb2938
nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0xb2938 match=
nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0xb2938 match=
nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0xb2938 match=
nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0xb2938 match=
nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0xb2938 match=
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb2938 match=
nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0xb2938 match=
[ 1044.410345] wlcore: PHY firmware version: Rev 8.2.0.0.233
[ 1044.580753] wlcore: firmware booted (Rev 8.9.0.1.55)
[ 1044.680722] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
nl80211: Add own interface ifinde 1044.688941] cfg80211: Calling CRDA to update world regulatory domain

nl80211: if_indices[16]: 2
phy: phy0
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
Previous country code 00, new country code US
Continue interface setup after channel list update
ctrl_iface not configured!
random: Got 20/20 bytes from /dev/random
RTM_NEWLINK: ifi_index=2 ifname=wlan0 operstate=2 linkmode=0 ifi_family=0 ifi_flags=0x1003 ([UP])
Channel list update timeout - try to continue any
nl80211: Regulatory information - country=00
nl80211: 2402-2472 @ 40 MHz 20 mBm
nl80211: 2457-2482 @ 40 MHz 20 mBm (no IR)
nl80211: 2474-2494 @ 20 MHz 20 mBm (no OFDM) (no IR)
nl80211: 5170-5250 @ 160 MHz 20 mBm (no IR)
nl80211: 5250-5330 @ 160 MHz 20 mBm (DFS) (no IR)
nl80211: 5490-5730 @ 160 MHz 20 mBm (DFS) [ 1049.752781] wlcore: down
(no IR)
nl80211: Added 802.11b mode based on 802.11g information
Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel:[ 1049.895303] wlcore: down
mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
Scan for neighboring BSSes to select channel
wlan0: nl80211: scan request
Scan requested (ret=0) - scan timeout 10 seconds
ACS: Automatic channel selection started, this may take a bit
ACS: Scanning 1 / 1
wlan0: nl80211: scan request
nl80211: Scan frequency 2412 MHz
nl80211: Scan frequency 2417 MHz
nl80211: Scan frequency 2422 MHz
nl80211: Scan frequency 2427 MHz
nl80211: Scan frequency 2432 MHz
nl80211: Scan frequency 2437 MHz
nl80211: Scan frequency 2442 MHz
nl80211: Scan frequency 2447 MHz
nl80211: Scan frequency 2452 MHz
nl80211: Scan frequency 2457 MHz
nl80211: Scan frequency 2462 MHz
nl80211: Scan trigger failed: ret=-16 (Device or resource busy)
nl80211: Set mode ifindex 2 iftype 2 (STATION)
nl80211: Teardown AP(wlan0) - device_ap_sme=0 use_monitor=0
nl80211: Unsubscribe mgmt frames handle 0x8883a1b1 (AP teardown)
nl80211: Subscribe to mgmt frames with non-AP handle 0xb29e8
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=0801
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=06
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=0a07
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=0a11
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=1101
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=1102
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=0505
wlan0: nl80211: scan request
nl80211: Scan frequency 2412 MHz
nl80211: Scan frequency 2417 MHz
nl80211: Scan frequency 2422 MHz
nl80211: Scan frequency 2427 MHz
nl80211: Scan frequency 2432 MHz
nl80211: Scan frequency 2437 MHz
nl80211: Scan frequency 2442 MHz
nl80211: Scan frequency 2447 MHz
nl80211: Scan frequency 2452 MHz
nl80211: Scan frequency 2457 MHz
nl80211: Scan frequency 2462 MHz
Scan requested (ret=0) - scan timeout 10 seconds
Scan requested (ret=0) - scan timeout 10 seconds
wl[ 1050.121861] wlcore: down
an0: interface state COUNTRY_UPDATE->ACS
wlan0: ACS-STARTED
Interface initialization will be completed in a callback (ACS)
nl80211: Event message available
nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0
wlan0: nl80211: Scan trigger
wlan0: Event SCAN_STARTED (47) received
Unknown event 47
nl80211: Event message available
nl80211: Drv Event 35 (NL80211_CMD_SCAN_ABORTED) received for wlan0
nl80211: Set mode ifindex 2 iftype 3 (AP)
nl80211: Unsubscribe mgmt frames handle 0x8883a161 (start AP)
nl80211: Setup AP(wlan0) - device_ap_sme=0 use_monitor=0
nl80211: Subscribe to mgmt frames with AP handle 0xb29e8
nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0xb29e8 match=
nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0xb29e8 match=
nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0xb29e8 match=
nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0xb29e8 match=
nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0xb29e8 match=
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0xb29e8 match=
nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0xb29e8 match=
wlan0: nl80211: Scan aborted
nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484 5180 5190 5200 5210 5220 5230 5240 5260 5280 5300 5320 5500 5520 5540 5560 5580 5600 5620 5640 5660 5680 5700
wlan0: Event SCAN_RESULTS (3) received
ACS: Using survey based algorithm (acs_num_scans=1)
nl80211: Fetch survey data
wlan0: Event SURVEY (46) received
No survey data received
ACS: Trying survey-based ACS
ACS: Unable to collect survey data
ACS: All study options have failed
Interface initialization failed
wlan0: interface state ACS->DISABLED
wlan0: AP-DISABLED
ACS: Possibly channel configuration is invalid, please report this along with your config file.
ACS: Failed to start
wlan0: AP-DISABLED
wlan0: Deauthenticate all stations
nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
nl80211: send_mlme -> send_frame
nl80211: send_frame - Use bss->freq=0
nl80211: send_frame -> send_frame_cmd
nl80211: CMD_FRAME freq=0 wait=0 no_cck=0 no_ack=0 offchanok=0
CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff a4 d5 78 1c 98 67 a4 d5 78 1c 98 67 00 00 03 00
nl80211: Frame command failed: ret=-22 (Invalid argument) (freq=0 wait=0)
hostapd_free_hapd_data: Interface wlan0 wasn't started
hostapd_deinit_driver: driver=0xac710 drv_priv=0xb2810 -> hapd_deinit
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
nl80211: Remove monitor interface: refcount=0
nl80211: Remove beacon (ifindex=2)
netlink: Operstate: ifindex=2 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
nl80211: Set mode ifindex 2 iftype 2 (STATION)
nl80211: Teardown AP(wlan0) - device_ap_sme=0 use_monitor=0
nl80211: Unsubscribe mgmt frames handle 0x8883a161 (AP teardown)
hostapd_deinit_driver:bss[0]->drv_priv=0xb2810
hostapd_cleanup_iface_partial(0xb02b8)
Interface wlan0 disabled
wlan0: interface state DISABLED->DISABLED
hostapd_interface_deinit_free(0xb02b8)
hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
hostapd_interface_deinit(0xb02b8)
wlan0: interface state DISABLED->DISABLED
hostapd_bss_deinit: deinit bss wlan0
wlan0: AP-DISABLED
hostapd_cleanup(hapd=0xb1eb8 (wlan0))
hostapd_free_hapd_data: Interface wlan0 wasn't started
hostapd_interface_deinit_free: driver=0xac710 drv_priv=(nil) -> hapd_deinit
hostapd_interface_free(0xb02b8)
hostapd_interface_free: free hapd 0xb1eb8
hostapd_cleanup_iface(0xb02b8)
hostapd_cleanup_iface_partial(0xb02b8)
hostapd_cleanup_iface: free iface=0xb02b8

Hi,

Can you double check that the channel number is set to "0" in your hostapd.conf?
Can you share your hostapd.conf so we can double check as well?

Best,
Eyal

Hi,

I attached my hostapd.conf and default configuration file.

We look forward to hearing from you.

thanks.config.zip

Hi,

Are you using hostapd from our latest releaase or an older one?
We are not sure you have all the ACS related patches in the version you use.

BR,
Eyal

Hi,

we are using hostapd2.4-devel version of WiLink8_R8_6_SP1 cloned from TI git repository.
the following command was used.
- git clone git://git.ti.com/wilink8-wlan/build-utilites.git
- ./build_wl18xx.sh init
- ./build_wl18xx.sh update R8.6_SP1 -> we decided to use this WiLink version because the kenel version is 3.18.

In my opinion, I think there were some problems when porting network drivers or hostap.
So we want to debug at the source level.
Can you tell me what functions are involved in generating the survey data?
If possible, please provide detailed call flows for debugging.

I'm much obliged to you for your help.
thanks.