Updates: I tried hostapd 2.6 release version (from .tar.gz), and it equally doesn't perform ACS. The expected ACS behaviour would be similar to this. My output cuts out at "ctrl_iface not configured!", so just search for "ctrl_iface" on this page to see all the fetching of survey data that I am missing out on. http://lists.infradead.org/pipermail/hostap/2016-July/035942.html The second question should be easy to answer by anyone who has observed ACS in action. Cheers, Sam On 26 April 2017 at 23:01, Sam Jaeschke <sam.jaeschke@xxxxxxxxx> wrote: > Hi, > > I'm attempting to get ACS working to see how it behaves. Unfortunately > I can't get it working. > > Release version: > https://w1.fi/releases/hostapd-2.4.tar.gz > > Only differences in hostapd.conf: > logger_stdout_level=0 > ap_max_inactivity=10 > ieee80211n=1 > channel=0 > > Only differences in defconfig: > CONFIG_LIBNL32=y > CONFIG_IEEE80211N=y > CONFIG_IEEE80211AC=y (should have turned that off - unused) > CONFIG_ACS=y > > Using ath9k driver, with message on bootup: > [ 1.891393] ath9k 0000:01:00.0: enabling device (0140 -> 0142) > [ 2.018054] ieee80211 phy0: Atheros AR9300 Rev:3 mem=0xf0980000, irq=171 > > > I turned on ACS, expecting it to automatically select the best of the > 1-11 channels on 2.4GHz in 802.11n mode. > > > Starting up hostapd with -dd: > > Starting HOSTAP Daemon: 1493191720.536396: random: Trying to read > entropy from /dev/random > 1493191720.536549: Configuration file: /etc/hostapd.conf > 1493191720.538374: ctrl_interface_group=0 > 1493191720.540665: rfkill: initial event: idx=0 type=1 op=0 soft=0 hard=0 > 1493191720.54115[ 4.420957] IPv6: ADDRCONF(NETDEV_UP): wlan0: link > is not ready > 3: nl80211: TDLS supported > 1493191720.541183: nl80211: TDLS external setup > 1493191720.541209: nl80211: Supported cipher 00-0f-ac:1 > 1493191720.541230: nl80211: Supported cipher 00-0f-ac:5 > 1493191720.541248: nl80211: Supported cipher 00-0f-ac:2 > 1493191720.541264: nl80211: Supported cipher 00-0f-ac:4 > 1493191720.541280: nl80211: Supported cipher 00-0f-ac:10 > 1493191720.541296: nl80211: Supported cipher 00-0f-ac:8 > 1493191720.541311: nl80211: Supported cipher 00-0f-ac:9 > 1493191720.541326: nl80211: Supported cipher 00-0f-ac:6 > 1493191720.541342: nl80211: Supported cipher 00-0f-ac:13 > 1493191720.541357: nl80211: Supported cipher 00-0f-ac:11 > 1493191720.541373: nl80211: Supported cipher 00-0f-ac:12 > 1493191720.541550: nl80211: Using driver-based off-channel TX > 1493191720.541619: nl80211: Use separate P2P group interface (driver > advertised support) > 1493191720.541639: nl80211: interface wlan0 in phy phy0 > 1493191720.541718: nl80211: Set mode ifindex 3 iftype 3 (AP) > 1493191720.541788: nl80211: Setup AP(wlan0) - device_ap_sme=0 use_monitor=0 > 1493191720.541908: nl80211: Subscribe to mgmt frames with AP handle 0xad850 > 1493191720.541935: nl80211: Register frame type=0xb0 > (WLAN_FC_STYPE_AUTH) nl_handle=0xad850 match= > 1493191720.542004: nl80211: Register frame type=0x0 > (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0xad850 match= > 1493191720.542067: nl80211: Register frame type=0x20 > (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0xad850 match= > 1493191720.542129: nl80211: Register frame type=0xa0 > (WLAN_FC_STYPE_DISASSOC) nl_handle=0xad850 match= > 1493191720.542189: nl80211: Register frame type=0xc0 > (WLAN_FC_STYPE_DEAUTH) nl_handle=0xad850 match= > 1493191720.542248: nl80211: Register frame type=0xd0 > (WLAN_FC_STYPE_ACTION) nl_handle=0xad850 match= > 1493191720.542309: nl80211: Register frame type=0x40 > (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0xad850 match= > 1493191720.565668: nl80211: Add own interface ifindex 3 > 1493191720.565707: nl80211: if_indices[16]: 3 > 1493191720.565754: phy: phy0 > 1493191720.565776: BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits) > 1493191720.566559: nl80211: Regulatory information - country=00 > 1493191720.566591: nl80211: 2402-2472 @ 40 MHz 20 mBm > 1493191720.566616: nl80211: 2457-2482 @ 40 MHz 20 mBm (no IR) > 1493191720.566639: nl80211: 2474-2494 @ 20 MHz 20 mBm (no OFDM) (no IR) > 1493191720.566661: nl80211: 5170-5250 @ 160 MHz 20 mBm (no IR) > 1493191720.566682: nl80211: 5250-5330 @ 160 MHz 20 mBm (DFS) (no IR) > 1493191720.566704: nl80211: 5490-5730 @ 160 MHz 20 mBm (DFS) (no IR) > 1493191720.566726: nl80211: 5735-5835 @ 80 MHz 20 mBm (no IR) > 1493191720.566747: nl80211: 57240-63720 @ 2160 MHz 0 mBm > 1493191720.566819: nl80211: Added 802.11b mode based on 802.11g information > 1493191720.566840: Allowed channel: mode=1 chan=1 freq=2412 MHz > max_tx_power=20 dBm > 1493191720.566859: Allowed channel: mode=1 chan=2 freq=2417 MHz > max_tx_power=20 dBm > 1493191720.566877: Allowed channel: mode=1 chan=3 freq=2422 MHz > max_tx_power=20 dBm > 1493191720.566894: Allowed channel: mode=1 chan=4 freq=2427 MHz > max_tx_power=20 dBm > 1493191720.566910: Allowed channel: mode=1 chan=5 freq=2432 MHz > max_tx_power=20 dBm > 1493191720.566927: Allowed channel: mode=1 chan=6 freq=2437 MHz > max_tx_power=20 dBm > 1493191720.566944: Allowed channel: mode=1 chan=7 freq=2442 MHz > max_tx_power=20 dBm > 1493191720.566960: Allowed channel: mode=1 chan=8 freq=2447 MHz > max_tx_power=20 dBm > 1493191720.566977: Allowed channel: mode=1 chan=9 freq=2452 MHz > max_tx_power=20 dBm > 1493191720.566994: Allowed channel: mode=1 chan=10 freq=2457 MHz > max_tx_power=20 dBm > 1493191720.567010: Allowed channel: mode=1 chan=11 freq=2462 MHz > max_tx_power=20 dBm > 1493191720.567028: Allowed channel: mode=0 chan=1 freq=2412 MHz > max_tx_power=20 dBm > 1493191720.567045: Allowed channel: mode=0 chan=2 freq=2417 MHz > max_tx_power=20 dBm > 1493191720.567062: Allowed channel: mode=0 chan=3 freq=2422 MHz > max_tx_power=20 dBm > 1493191720.567078: Allowed channel: mode=0 chan=4 freq=2427 MHz > max_tx_power=20 dBm > 1493191720.567095: Allowed channel: mode=0 chan=5 freq=2432 MHz > max_tx_power=20 dBm > 1493191720.567112: Allowed channel: mode=0 chan=6 freq=2437 MHz > max_tx_power=20 dBm > 1493191720.567128: Allowed channel: mode=0 chan=7 freq=2442 MHz > max_tx_power=20 dBm > 1493191720.900419: Allowed channel: mode=0 chan=8 freq=2447 MHz > max_tx_power=20 dBm > 1493191720.900452: Allowed channel: mode=0 chan=9 freq=2452 MHz > max_tx_power=20 dBm > 1493191720.900471: Allowed channel: mode=0 chan=10 freq=2457 MHz > max_tx_power=20 dBm > 1493191720.900489: Allowed channel: mode=0 chan=11 freq=2462 MHz > max_tx_power=20 dBm > 1493191720.900508: ACS: Automatic channel selection started, this may take a bit > 1493191720.900527: ACS: Scanning 1 / 5 > 1493191720.900552: wlan0: nl80211: scan request > 1493191720.900584: nl80211: Scan frequency 2412 MHz > 1493191720.900601: nl80211: Scan frequency 2417 MHz > 1493191720.900616: nl80211: Scan frequency 2422 MHz > 1493191720.900630: nl80211: Scan frequency 2427 MHz > 1493191720.900644: nl80211: Scan frequency 2432 MHz > 1493191720.900659: nl80211: Scan frequency 2437 MHz > 1493191720.900673: nl80211: Scan frequency 2442 MHz > 1493191720.900687: nl80211: Scan frequency 2447 MHz > 1493191720.900701: nl80211: Scan frequency 2452 MHz > 1493191720.900714: nl80211: Scan frequency 2457 MHz > 1493191720.900728: nl80211: Scan frequency 2462 MHz > 1493191720.912015: Scan requested (ret=0) - scan timeout 10 seconds > 1493191720.912068: wlan0: interface state UNINITIALIZED->ACS > 1493191720.912107: wlan0: ACS-STARTED > 1493191720.912134: Interface initialization will be completed in a > callback (ACS) > 1493191720.912159: ctrl_iface not configured! > hostapd. <--------- this indicates the end of hostapd output > [ 10.971004] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready > > > So hostapd does work and provide an AP, but it's not on an automatic > channel, and it's seems to always pick channel 1 regardless of how > crowded it is with other devices. > My understanding is that it should output some ACS scan info at the > end, but it's not. > > Any ideas why ACS would not be working? > > > > I have been reading the ACS documentation (and the comments in the > hostapd.conf), and haven't worked out how it does behave yet. Does it > only scan once on startup? Or does it scan periodically while > operation, and jump channels when it sees fit? > > Many thanks, > Sam _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
