ILD

iw命令
作者:Yuan Jianpeng 邮箱:yuanjp89@163.com
发布时间:2020-4-10 站点:Inside Linux Development


iw event

Monitor events from the kernel.
        -t - print timestamp
        -r - print relative timstamp
        -f - print full frame for auth/assoc etc.


/tmp # iw event -f
ap5g: del station 70:ef:00:af:31:52
ap5g (phy #1): mgmt TX status (cookie bbe): no ack
ap5g (phy #1): mgmt TX status (cookie bbf): acked
ap5g: new station 70:ef:00:af:31:52
ap5g (phy #1): mgmt TX status (cookie bc0): acked
ap5g (phy #1): mgmt TX status (cookie bc1): acked


iw phy phy0 info

Show capabilities for the specified wireless device.

/tmp # iw phy phy0 info
Wiphy phy0
        max # scan SSIDs: 16
        max scan IEs length: 195 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 limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Device supports RSN-IBSS.
        Device supports AP-side u-APSD.
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP-128 (00-0f-ac:4)
                * CMAC (00-0f-ac:6)
                * CMAC-256 (00-0f-ac:13)
                * GMAC-128 (00-0f-ac:11)
                * GMAC-256 (00-0f-ac:12)
                * GCMP-128 (00-0f-ac:8)
                * GCMP-256 (00-0f-ac:9)
                * CCMP-256 (00-0f-ac:10)
        Available Antennas: TX 0x3 RX 0x3
        Configured Antennas: TX 0x3 RX 0x3
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * monitor
                 * mesh point
                 * P2P-client
                 * P2P-GO
                 * P2P-device
        Band 1:
                Capabilities: 0x19ef
                        RX LDPC
                        HT20/HT40
                        SM Power Save disabled
                        RX HT20 SGI
                        RX HT40 SGI
                        TX STBC
                        RX STBC 1-stream
                        Max AMSDU length: 7935 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 8 usec (0x06)
                HT TX/RX MCS rate indexes supported: 0-15
                VHT Capabilities (0x339959b2):
                        Max MPDU length: 11454
                        Supported Channel Width: neither 160 nor 80+80
                        RX LDPC
                        short GI (80 MHz)
                        TX STBC
                        SU Beamformer
                        SU Beamformee
                        MU Beamformer
                        MU Beamformee
                        RX antenna pattern consistency
                        TX antenna pattern consistency
                VHT RX MCS set:
                        1 streams: MCS 0-9
                        2 streams: MCS 0-9
                        3 streams: not supported
                        4 streams: not supported
                        5 streams: not supported
                        6 streams: not supported
                        7 streams: not supported
                        8 streams: not supported
                VHT RX highest supported: 0 Mbps
                VHT TX MCS set:
                        1 streams: MCS 0-9
                        2 streams: MCS 0-9
                        3 streams: not supported
                        4 streams: not supported
                        5 streams: not supported
                        6 streams: not supported
                        7 streams: not supported
                        8 streams: not supported
                VHT TX highest supported: 0 Mbps
                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] (30.0 dBm)
                        * 2417 MHz [2] (30.0 dBm)
                        * 2422 MHz [3] (30.0 dBm)
                        * 2427 MHz [4] (30.0 dBm)
                        * 2432 MHz [5] (30.0 dBm)
                        * 2437 MHz [6] (30.0 dBm)
                        * 2442 MHz [7] (30.0 dBm)
                        * 2447 MHz [8] (30.0 dBm)
                        * 2452 MHz [9] (30.0 dBm)
                        * 2457 MHz [10] (30.0 dBm)
                        * 2462 MHz [11] (30.0 dBm)
                        * 2467 MHz [12] (disabled)
                        * 2472 MHz [13] (disabled)
                        * 2484 MHz [14] (disabled)
        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
                 * remain_on_channel
                 * 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
                 * testmode
                 * connect
                 * disconnect
                 * channel_switch
                 * 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):
                 * monitor
        valid interface combinations:
                 * #{ managed } <= 16, #{ AP, mesh point } <= 16, #{ IBSS } <= 1,
                   total <= 16, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }

        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 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
        Driver/device bandwidth changes during BSS lifetime (AP/GO mode)
        Device supports static SMPS
        Device supports configuring vdev MAC-addr on create.
        Supported extended features:
                * [ VHT_IBSS ]: VHT-IBSS
                * [ RRM ]: RRM
                * [ SET_SCAN_DWELL ]: scan dwell setting
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs


iw list

iw phy

List all wireless devices and their capabilities.



iw commands

list all known commands and their decimal & hex value


/tmp # iw commands
1 (0x1): get_wiphy
2 (0x2): set_wiphy
3 (0x3): new_wiphy
4 (0x4): del_wiphy
5 (0x5): get_interface
6 (0x6): set_interface
7 (0x7): new_interface
8 (0x8): del_interface
9 (0x9): get_key
10 (0xa): set_key
11 (0xb): new_key
12 (0xc): del_key
13 (0xd): get_beacon
14 (0xe): set_beacon
15 (0xf): start_ap
16 (0x10): stop_ap
17 (0x11): get_station
18 (0x12): set_station
19 (0x13): new_station
20 (0x14): del_station
21 (0x15): get_mpath
22 (0x16): set_mpath
23 (0x17): new_mpath
24 (0x18): del_mpath
25 (0x19): set_bss
26 (0x1a): set_reg
27 (0x1b): req_set_reg
28 (0x1c): get_mesh_config
29 (0x1d): set_mesh_config
30 (0x1e): Unknown command (30)
31 (0x1f): get_reg
32 (0x20): get_scan
33 (0x21): trigger_scan
34 (0x22): new_scan_results
35 (0x23): scan_aborted
36 (0x24): reg_change
37 (0x25): authenticate
38 (0x26): associate
39 (0x27): deauthenticate
40 (0x28): disassociate
41 (0x29): michael_mic_failure
42 (0x2a): reg_beacon_hint
43 (0x2b): join_ibss
44 (0x2c): leave_ibss
45 (0x2d): testmode
46 (0x2e): connect
47 (0x2f): roam
48 (0x30): disconnect
49 (0x31): set_wiphy_netns
50 (0x32): get_survey
51 (0x33): new_survey_results
52 (0x34): set_pmksa
53 (0x35): del_pmksa
54 (0x36): flush_pmksa
55 (0x37): remain_on_channel
56 (0x38): cancel_remain_on_channel
57 (0x39): set_tx_bitrate_mask
58 (0x3a): register_frame
59 (0x3b): frame
60 (0x3c): frame_tx_status
61 (0x3d): set_power_save
62 (0x3e): get_power_save
63 (0x3f): set_cqm
64 (0x40): notify_cqm
65 (0x41): set_channel
66 (0x42): set_wds_peer
67 (0x43): frame_wait_cancel
68 (0x44): join_mesh
69 (0x45): leave_mesh
70 (0x46): unprot_deauthenticate
71 (0x47): unprot_disassociate
72 (0x48): new_peer_candidate
73 (0x49): get_wowlan
74 (0x4a): set_wowlan
75 (0x4b): start_sched_scan
76 (0x4c): stop_sched_scan
77 (0x4d): sched_scan_results
78 (0x4e): sched_scan_stopped
79 (0x4f): set_rekey_offload
80 (0x50): pmksa_candidate
81 (0x51): tdls_oper
82 (0x52): tdls_mgmt
83 (0x53): unexpected_frame
84 (0x54): probe_client
85 (0x55): register_beacons
86 (0x56): unexpected_4addr_frame
87 (0x57): set_noack_map
88 (0x58): ch_switch_notify
89 (0x59): start_p2p_device
90 (0x5a): stop_p2p_device
91 (0x5b): conn_failed
92 (0x5c): set_mcast_rate
93 (0x5d): set_mac_acl
94 (0x5e): radar_detect
95 (0x5f): get_protocol_features
96 (0x60): update_ft_ies
97 (0x61): ft_event
98 (0x62): crit_protocol_start
99 (0x63): crit_protocol_stop
100 (0x64): get_coalesce
101 (0x65): set_coalesce
102 (0x66): channel_switch
103 (0x67): vendor
104 (0x68): set_qos_map
105 (0x69): add_tx_ts
106 (0x6a): del_tx_ts
107 (0x6b): get_mpp
108 (0x6c): join_ocb
109 (0x6d): leave_ocb
110 (0x6e): ch_switch_started_notify
111 (0x6f): tdls_channel_switch
112 (0x70): tdls_cancel_channel_switch
113 (0x71): wiphy_reg_change
114 (0x72): abort_scan
115 (0x73): start_nan
116 (0x74): stop_nan
117 (0x75): add_nan_function
118 (0x76): del_nan_function
119 (0x77): change_nan_config
120 (0x78): nan_match
121 (0x79): set_multicast_to_unicast
122 (0x7a): update_connect_params
123 (0x7b): set_pmk
124 (0x7c): del_pmk
125 (0x7d): port_authorized
126 (0x7e): reload_regdb
127 (0x7f): external_auth
128 (0x80): sta_opmode_changed
129 (0x81): control_port_frame
130 (0x82): get_ftm_responder_stats
131 (0x83): peer_measurement_start
132 (0x84): peer_measurement_result
133 (0x85): peer_measurement_complete
134 (0x86): notify_radar


iw phy phy0 channels

Show available channels.

/tmp # iw phy phy0 channels
Band 1:
        * 2412 MHz [1]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40+
        * 2417 MHz [2]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40+
        * 2422 MHz [3]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40+
        * 2427 MHz [4]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40+
        * 2432 MHz [5]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40- HT40+
        * 2437 MHz [6]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40- HT40+
        * 2442 MHz [7]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40- HT40+
        * 2447 MHz [8]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40-
        * 2452 MHz [9]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40-
        * 2457 MHz [10]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40-
        * 2462 MHz [11]
          Maximum TX power: 30.0 dBm
          Channel widths: 20MHz HT40-
        * 2467 MHz [12] (disabled)
        * 2472 MHz [13] (disabled)
        * 2484 MHz [14] (disabled)


iw phy phy1 interface add sta20 type managed addr 00:00:00:00:00:a0

    phy <phyname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*] [addr <mac-addr>]
        Add a new virtual interface with the given configuration.
        Valid interface types are: managed, ibss, monitor, mesh, wds.
        
        The flags are only used for monitor interfaces, valid flags are:
        none:     no special flags
        fcsfail:  show frames with FCS errors
        control:  show control frames
        otherbss: show frames from other BSSes
        cook:     use cooked mode
        active:   use active mode (ACK incoming unicast packets)
        mumimo-groupid <GROUP_ID>: use MUMIMO according to a group id
        mumimo-follow-mac <MAC_ADDRESS>: use MUMIMO according to a MAC address
        
        The mesh_id is used only for mesh mode.


/tmp # iw phy phy1 interface add sta20 type managed addr 00:00:00:00:00:a0
/tmp #

 iw dev sta20 del

    dev <devname> del
        Remove this virtual interface


/tmp # iw dev sta20 del
/tmp #


iw dev sta10 info

dev <devname> info
        Show information for this interface.


/tmp # iw dev sta10 info
Interface sta10
        ifindex 7
        wdev 0x2
        addr 00:03:7f:12:34:56
        type managed
        wiphy 0
        txpower 0.00 dBm
        multicast TXQ:
                qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                0       0       0       0       0       0       0       0               0


/tmp # iw dev ap5g info
Interface ap5g
        ifindex 5
        wdev 0x100000001
        addr 12:34:56:78:90:12
        ssid test
        type AP
        wiphy 1
        channel 44 (5220 MHz), width: 20 MHz (no HT), center1: 5220 MHz
        txpower 23.00 dBm
        multicast TXQ:
                qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                0       0       29909   0       0       0       0       3063111         29914


iw dev


    dev
        List all network interfaces for wireless hardware.


/tmp # iw dev
phy#1
        Interface ap5g
                ifindex 5
                wdev 0x100000001
                addr 12:34:56:78:90:12
                ssid test
                type AP
                channel 44 (5220 MHz), width: 20 MHz (no HT), center1: 5220 MHz
                txpower 23.00 dBm
                multicast TXQ:
                        qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                        0       0       29923   0       0       0       0       3065035         29928
phy#0
        Interface sta10
                ifindex 7
                wdev 0x2
                addr 00:03:7f:12:34:56
                type managed
                txpower 0.00 dBm
                multicast TXQ:
                        qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                        0       0       0       0       0       0       0       0               0
        Interface wlan10
                ifindex 6
                wdev 0x1
                addr 00:03:7f:12:34:56
                type managed
                txpower 0.00 dBm
                multicast TXQ:
                        qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                        0       0       0       0       0       0       0       0               0



iw dev ap5g station dump


dev <devname> station dump [-v]
        List all stations known, e.g. the AP on managed interfaces



/tmp # iw dev ap5g station dump
Station 70:ef:00:af:31:52 (on ap5g)
        inactive time:  7600 ms
        rx bytes:       8262163
        rx packets:     80911
        tx bytes:       122851342
        tx packets:     89686
        tx retries:     0
        tx failed:      1438
        rx drop misc:   87
        signal:         -34 [-36, -38, -95, -95] dBm
        signal avg:     -34 [-36, -38, -95, -95] dBm
        tx bitrate:     2.8 MBit/s
        rx bitrate:     24.0 MBit/s
        rx duration:    62868000 us
        last ack signal:-36 dBm
        authorized:     yes
        authenticated:  yes
        associated:     yes
        preamble:       long
        WMM/WME:        no
        MFP:            no
        TDLS peer:      no
        DTIM period:    2
        beacon interval:100
        short slot time:yes
        connected time: 2332 seconds


iw dev ap5g station get 70:ef:00:af:31:52


dev <devname> station get <MAC address>
        Get information for a specific station.


/tmp # iw dev ap5g station get 70:ef:00:af:31:52
Station 70:ef:00:af:31:52 (on ap5g)
        inactive time:  1530 ms
        rx bytes:       8280669
        rx packets:     81045
        tx bytes:       122872864
        tx packets:     89740
        tx retries:     0
        tx failed:      1438
        rx drop misc:   87
        signal:         -34 [-37, -38, -95, -95] dBm
        signal avg:     -33 [-36, -37, -95, -95] dBm
        tx bitrate:     2.8 MBit/s
        rx bitrate:     24.0 MBit/s
        rx duration:    63948000 us
        last ack signal:-34 dBm
        authorized:     yes
        authenticated:  yes
        associated:     yes
        preamble:       long
        WMM/WME:        no
        MFP:            no
        TDLS peer:      no
        DTIM period:    2
        beacon interval:100
        short slot time:yes
        connected time: 2371 seconds


iw dev ap5g station del 70:ef:00:af:31:52


    dev <devname> station del <MAC address> [subtype <subtype>] [reason-code <code>]
        Remove the given station entry (use with caution!)
        Example subtype values: 0xA (disassociation), 0xC (deauthentication)


/tmp # iw dev ap5g station del 70:ef:00:af:31:52
/tmp #


iw dev sta10 scan

扫描ssid,trigger的话,在后台执行


    dev <devname> scan [-u] [freq <freq>*] [duration <dur>] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force,duration-mandatory] [randomise[=<addr>/<mask>]] [ssid <ssid>*|passive]
        Scan on the given frequencies and probe for the given SSIDs
        (or wildcard if not given) unless passive scanning is requested.
        If -u is specified print unknown data in the scan results.
        Specified (vendor) IEs must be well-formed.

    dev <devname> scan dump [-u]
        Dump the current scan results. If -u is specified, print unknown
        data in scan results.

    dev <devname> scan trigger [freq <freq>*] [duration <dur>] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force,duration-mandatory] [randomise[=<addr>/<mask>]] [ssid <ssid>*|passive]
        Trigger a scan on the given frequencies with probing for the given
        SSIDs (or wildcard if not given) unless passive scanning is requested.
        Duration(in TUs), if specified, will be used to set dwell times.


/tmp # iw dev sta10 scan
BSS fc:7c:02:9b:a4:5f(on sta10)
        TSF: 94721345460 usec (1d, 02:18:41)
        freq: 2422
        beacon interval: 100 TUs
        capability: ESS Privacy ShortSlotTime APSD (0x0c11)
        signal: -50.00 dBm
        last seen: 480 ms ago
        Information elements from Probe Response frame:
        SSID: @PHICOMM_2710
        Supported rates: 1.0* 2.0* 5.5* 11.0* 9.0 18.0 36.0 54.0
        DS Parameter set: channel 3
        ERP: Barker_Preamble_Mode
        Extended supported rates: 6.0 12.0 24.0 48.0
        HT capabilities:
                Capabilities: 0x11ee
                        HT20/HT40
                        SM Power Save disabled
                        RX HT20 SGI
                        RX HT40 SGI
                        TX STBC
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 4 usec (0x05)
                HT RX MCS rate indexes supported: 0-15, 32
                HT TX MCS rate indexes are undefined
        HT operation:
                 * primary channel: 3
                 * secondary channel offset: no secondary
                 * STA channel width: 20 MHz
                 * RIFS: 0
                 * HT protection: 20 MHz
                 * non-GF present: 1
                 * OBSS non-GF present: 0
                 * dual beacon: 0
                 * dual CTS protection: 0
                 * STBC beacon: 0
                 * L-SIG TXOP Prot: 0
                 * PCO active: 0
                 * PCO phase: 0
        WPA:     * Version: 1
                 * Group cipher: TKIP
                 * Pairwise ciphers: TKIP CCMP
                 * Authentication suites: PSK
        RSN:     * Version: 1
                 * Group cipher: TKIP
                 * Pairwise ciphers: TKIP CCMP
                 * Authentication suites: PSK
                 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
        WMM:     * Parameter version 1
                 * u-APSD
                 * BE: CW 15-1023, AIFSN 3
                 * BK: CW 15-1023, AIFSN 7
                 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
                 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
        BSS Load:
                 * station count: 4
                 * channel utilisation: 53/255
                 * available admission capacity: 31250 [*32us]
        Overlapping BSS scan params:
                 * passive dwell: 20 TUs
                 * active dwell: 10 TUs
                 * channel width trigger scan interval: 300 s
                 * scan passive total per channel: 200 TUs
                 * scan active total per channel: 20 TUs
                 * BSS width channel transition delay factor: 5
                 * OBSS Scan Activity Threshold: 0.25 %
        Extended capabilities:
                 * HT Information Exchange Supported
        Country: CN     Environment: Indoor/Outdoor
                Channels [1 - 13] @ 16 dBm


设置信道和带宽

    phy <phyname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
    phy <phyname> set freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
        Set frequency/channel the hardware is using, including HT
        configuration.

    dev <devname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
    dev <devname> set freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
    phy <phyname> set channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
    dev <devname> set channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]


/tmp # iw phy phy0 interface add mon0 type monitor
/tmp # iw phy phy0 set channel 3
command failed: Device or resource busy (-16)
/tmp # ifconfig mon0 up
[694616.544587] ath10k_ahb a000000.wifi: 10.4 wmi init: vdevs: 16  peers: 48  tid: 96
[694616.544632] ath10k_ahb a000000.wifi: msdu-desc: 2500  skid: 32
[694616.580059] ath10k_ahb a000000.wifi: wmi print 'P 48/48 V 16 K 144 PH 176 T 186  msdu-desc: 2500  sw-crypt: 0 ct-sta: 0'
[694616.583100] ath10k_ahb a000000.wifi: wmi print 'free: 56576 iram: 23368 sram: 35968'
[694617.121791] ath10k_ahb a000000.wifi: Firmware lacks feature flag indicating a retry limit of > 2 is OK, requested limit: 4
/tmp # iw phy phy0 set channel 3


注意:这里需要up接口,才能设置channel。





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