The scenario is very specific: I have both ieee80211n=1 and ieee80211ac=1 also with ht_capab and vht_capab both set. Here is some log; ====== 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 00-0f-ac:6 nl80211: Using driver-based off-channel TX nl80211: Driver-advertised extended capabilities (default) - hexdump(len=8): 04 00 00 00 00 00 00 40 nl80211: Driver-advertised extended capabilities mask (default) - hexdump(len=8): 04 00 00 00 00 00 0 40 nl80211: interface wlp2s0 in phy phy0 nl80211: Set mode ifindex 4 iftype 3 (AP) nl80211: Setup AP(wlp2s0) - device_ap_sme=0 use_monitor=0 nl80211: Subscribe to mgmt frames with AP handle 0x2094cd0 nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0x2094cd0 match= nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0x2094cd0 match= nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0x2094cd0 match= nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0x2094cd0 match= nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0x2094cd0 match= nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x2094cd0 match= nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=04 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=0501 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=0503 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=0504 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=06 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=08 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=09 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=0a nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=11 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=12 nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x2094cd0 match=7f rfkill: initial event: idx=1 type=1 op=0 soft=0 hard=0 nl80211: Add own interface ifindex 4 (ifidx_reason -1) nl80211: if_indices[16]: 4(-1) phy: phy0 BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits) wlp2s0: interface state UNINITIALIZED->COUNTRY_UPDATE Previous country code US, new country code US nl80211: Regulatory information - country=US (DFS-FCC) nl80211: 2402-2472 @ 40 MHz 30 mBm nl80211: 5170-5250 @ 80 MHz 17 mBm nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS) nl80211: 5735-5835 @ 80 MHz 30 mBm nl80211: 57240-63720 @ 2160 MHz 40 mBm Allowed channel: mode=2 chan=36 freq=5180 MHz max_tx_power=17 dBm Allowed channel: mode=2 chan=40 freq=5200 MHz max_tx_power=17 dBm Allowed channel: mode=2 chan=44 freq=5220 MHz max_tx_power=17 dBm Allowed channel: mode=2 chan=48 freq=5240 MHz max_tx_power=17 dBm Allowed channel: mode=2 chan=52 freq=5260 MHz max_tx_power=23 dBm (DFS state = usable) Allowed channel: mode=2 chan=56 freq=5280 MHz max_tx_power=23 dBm (DFS state = usable) Allowed channel: mode=2 chan=60 freq=5300 MHz max_tx_power=23 dBm (DFS state = usable) Allowed channel: mode=2 chan=64 freq=5320 MHz max_tx_power=23 dBm (DFS state = usable) Allowed channel: mode=2 chan=149 freq=5745 MHz max_tx_power=30 dBm Allowed channel: mode=2 chan=153 freq=5765 MHz max_tx_power=30 dBm Allowed channel: mode=2 chan=157 freq=5785 MHz max_tx_power=30 dBm Allowed channel: mode=2 chan=161 freq=5805 MHz max_tx_power=30 dBm Allowed channel: mode=2 chan=165 freq=5825 MHz max_tx_power=30 dBm Disable HT capability [DSSS_CCK-40] on 5 GHz band hw vht capab: 0x338001b2, conf vht capab: 0x338000b2 wlp2s0: interface state COUNTRY_UPDATE->HT_SCAN Scan for neighboring BSSes prior to enabling 40 MHz channel 40 MHz affected channel range: [5795,5835] MHz wlp2s0: nl80211: scan request nl80211: Passive scan requested nl80211: Scan frequency 5805 MHz nl80211: Scan frequency 5825 MHz Scan requested (ret=0) - scan timeout 10 seconds Interface initialization will be completed in a callback ctrl_iface not configured! RTM_NEWLINK: ifi_index=4 ifname=wlp2s0 operstate=2 linkmode=0 ifi_family=0 ifi_flags=0x1002 () nl80211: Ignore interface down event since interface wlp2s0 is up RTM_NEWLINK: ifi_index=4 ifname=wlp2s0 operstate=2 linkmode=0 ifi_family=0 ifi_flags=0x1002 () nl80211: Ignore interface down event since interface wlp2s0 is up RTM_NEWLINK: ifi_index=4 ifname=wlp2s0 operstate=2 linkmode=0 ifi_family=0 ifi_flags=0x1003 ([UP]) nl80211: Event message available nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlp2s0 wlp2s0: nl80211: Scan trigger wlp2s0: Event SCAN_STARTED (47) received Unknown event 47 RTM_NEWLINK: ifi_index=4 ifname=wlp2s0 wext ifi_family=0 ifi_flags=0x1003 ([UP]) nl80211: Event message available nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlp2s0 wlp2s0: nl80211: New scan results available nl80211: Scan included frequencies: 5805 5825 wlp2s0: Event SCAN_RESULTS (3) received nl80211: Received scan results (0 BSSes) HT40: control channel: 161 secondary channel: 165 HT40 channel pair (161, 165) not allowed Fallback to 20 MHz Completing interface initialization Mode: IEEE 802.11a Channel: 161 Frequency: 5805 MHz DFS chan_idx seems wrong; num-ch: 25 ch-no: -6 conf-ch-no: 161 11n: 1 sec-ch: 0 vht-oper-width: 1 Available channel: 36 Available channel: 40 Available channel: 44 Available channel: 48 Available channel: 52 Available channel: 56 Available channel: 60 Available channel: 64 Available channel: 100 Available channel: 104 Available channel: 108 Available channel: 112 Available channel: 116 Available channel: 120 Available channel: 124 Available channel: 128 Available channel: 132 Available channel: 136 Available channel: 140 Available channel: 144 Available channel: 149 Available channel: 153 Available channel: 157 Available channel: 161 Available channel: 165 Interface initialization failed wlp2s0: interface state HT_SCAN->DISABLED wlp2s0: AP-DISABLED hostapd_interface_deinit_free(0x2091fa0) hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1 hostapd_interface_deinit(0x2091fa0) wlp2s0: interface state DISABLED->DISABLED hostapd_bss_deinit: deinit bss wlp2s0 wlp2s0: 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 6c 98 eb 40 d6 30 6c 98 eb 40 d6 30 00 00 03 00 nl80211: Frame command failed: ret=-22 (Invalid argument) (freq=0 wait=0) wlp2s0: AP-DISABLED hostapd_cleanup(hapd=0x2093b80 (wlp2s0)) wlp2s0: CTRL-EVENT-TERMINATING ======== Thanks, Eduardo > On 29 January 2017 at 23:46, Jouni Malinen <j@xxxxx> wrote: >> >> On Tue, Jan 17, 2017 at 11:59:03AM +0100, Eduardo Abinader wrote: >> > Some channels fail to be set, when falling back to 20MHz, due to >> > remaining info of center freq. As we are going 20 MHz, reset the >> > info as well. >> >> Do you happen to have a debug log that would show an issue with the >> current implementation or a description of a case where leaving the VHT >> center frequencies set breaks something? I would like to add a hwsim >> test case to cover that and could not hit a case that would display such >> behavior. >> >> -- >> Jouni Malinen PGP id EFC895FA > > _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
