hostapd 802.11n 설정하기 시도중

ht_capab 에서 HT40으로 되어있어서 에러가 나던데

일단은 conf 파일 예제에 있던 대로 HT40- 으로 하니 문제없이 작동하긴 한다.

ht_capab=[HT40-][SHORT-GI-20][SHORT-GI-40]

[링크 : https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf]

 

로그를 분석해보니 HT40이 문제가 아니었군

5월 16 09:46:44 raspberrypi kernel: WARN::dwc_otg_hcd_urb_dequeue:639: Timed out waiting for FSM NP transfer to complete on 0  5월 16 09:46:45 raspberrypi kernel: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready  5월 16 09:46:45 raspberrypi hostapd[1455]: Driver does not support configured HT capability [DSSS_CCK-40]  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: interface state UNINITIALIZED->DISABLED  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: AP-DISABLED  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: Unable to setup interface.  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: interface state DISABLED->DISABLED  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: AP-DISABLED  5월 16 09:46:45 raspberrypi hostapd[1455]: wlan0: CTRL-EVENT-TERMINATING  5월 16 09:46:45 raspberrypi hostapd[1455]: hostapd_free_hapd_data: Interface wlan0 wasn't started  5월 16 09:46:45 raspberrypi hostapd[1455]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0  5월 16 09:46:45 raspberrypi kernel: WARN::dwc_otg_hcd_urb_dequeue:639: Timed out waiting for FSM NP transfer to complete on 7  5월 16 09:46:45 raspberrypi systemd[1]: hostapd.service: Control process exited, code=exited, status=1/FAILURE

 

iwlist 명령을 통해서 capability를 볼 수 있는 듯

$ iw list Wiphy phy0         max # scan SSIDs: 4         max scan IEs length: 2257 bytes         max # sched scan SSIDs: 0         max # match sets: 0         max # scan plans: 1         max scan plan interval: -1         max scan plan iterations: 0         Retry short long limit: 2         Coverage class: 0 (up to 0m)         Device supports RSN-IBSS.         Supported Ciphers:                 * WEP40 (00-0f-ac:1)                 * WEP104 (00-0f-ac:5)                 * TKIP (00-0f-ac:2)                 * CCMP-128 (00-0f-ac:4)                 * CCMP-256 (00-0f-ac:10)                 * GCMP-128 (00-0f-ac:8)                 * GCMP-256 (00-0f-ac:9)         Available Antennas: TX 0 RX 0         Supported interface modes:                  * IBSS                  * managed                  * AP                  * AP/VLAN                  * monitor                  * mesh point         Band 1:                 Capabilities: 0x17e                         HT20/HT40                         SM Power Save disabled                         RX Greenfield                         RX HT20 SGI                         RX HT40 SGI                         RX STBC 1-stream                         Max AMSDU length: 3839 bytes                         No DSSS/CCK HT40                 Maximum RX AMPDU length 32767 bytes (exponent: 0x002)                 Minimum RX AMPDU time spacing: 2 usec (0x04)                 HT TX/RX MCS rate indexes supported: 0-7, 32                 Bitrates (non-HT):                         * 1.0 Mbps                         * 2.0 Mbps (short preamble supported)                         * 5.5 Mbps (short preamble supported)                         * 11.0 Mbps (short preamble supported)                         * 6.0 Mbps                         * 9.0 Mbps                         * 12.0 Mbps                         * 18.0 Mbps                         * 24.0 Mbps                         * 36.0 Mbps                         * 48.0 Mbps                         * 54.0 Mbps                 Frequencies:                         * 2412 MHz [1] (20.0 dBm)                         * 2417 MHz [2] (20.0 dBm)                         * 2422 MHz [3] (20.0 dBm)                         * 2427 MHz [4] (20.0 dBm)                         * 2432 MHz [5] (20.0 dBm)                         * 2437 MHz [6] (20.0 dBm)                         * 2442 MHz [7] (20.0 dBm)                         * 2447 MHz [8] (20.0 dBm)                         * 2452 MHz [9] (20.0 dBm)                         * 2457 MHz [10] (20.0 dBm)                         * 2462 MHz [11] (20.0 dBm)                         * 2467 MHz [12] (20.0 dBm) (no IR)                         * 2472 MHz [13] (20.0 dBm) (no IR)                         * 2484 MHz [14] (20.0 dBm) (no IR)         Supported commands:                  * new_interface                  * set_interface                  * new_key                  * start_ap                  * new_station                  * new_mpath                  * set_mesh_config                  * set_bss                  * authenticate                  * associate                  * deauthenticate                  * disassociate                  * join_ibss                  * join_mesh                  * set_tx_bitrate_mask                  * frame                  * frame_wait_cancel                  * set_wiphy_netns                  * set_channel                  * set_wds_peer                  * probe_client                  * set_noack_map                  * register_beacons                  * start_p2p_device                  * set_mcast_rate                  * connect                  * disconnect                  * set_qos_map                  * set_multicast_to_unicast         Supported TX frame types:                  * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0                  * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0         Supported RX frame types:                  * IBSS: 0x40 0xb0 0xc0 0xd0                  * managed: 0x40 0xd0                  * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0                  * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0                  * mesh point: 0xb0 0xc0 0xd0                  * P2P-client: 0x40 0xd0                  * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0                  * P2P-device: 0x40 0xd0         software interface modes (can always be added):                  * AP/VLAN                  * monitor         valid interface combinations:                  * #{ AP, mesh point } <= 8,                    total <= 8, #channels <= 1         HT Capability overrides:                  * MCS: ff ff ff ff ff ff ff ff ff ff                  * maximum A-MSDU length                  * supported channel width                  * short GI for 40 MHz                  * max A-MPDU length exponent                  * min MPDU start spacing         Device supports TX status socket option.         Device supports HT-IBSS.         Device supports SAE with AUTHENTICATE command         Device supports low priority scan.         Device supports scan flush.         Device supports AP scan.         Device supports per-vif TX power setting         Driver supports full state transitions for AP/GO clients         Driver supports a userspace MPM         Device supports configuring vdev MAC-addr on create.         Supported extended features:                 * [ RRM ]: RRM                 * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)                 * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records                 * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211

[링크 : https://unix.stackexchange.com/questions/405282/finding-capabilities-of-wifi-driver-device]