我输入了iw dev wifi
1 info，输出是
Usage: iw [options] command
Options:
--debug enable netlink debugging
--version show version
(5
.16
)
Commands:
dev <devname> ap stop
Stop AP functionality
dev <devname> ap start
<SSID> <control freq> [5|
10|20|40|
80|
80+
80|
160] [<center
1_freq> [<center2_freq>]] <beacon interval in TU> <DTIM period> [hidden-ssid|zeroed-ssid] head <beacon head in hexadecimal> [tail <beacon tail in hexadecimal>] [inactivity-time <inactivity time in seconds>] [key0:abcde d:
1:6
162636465]
phy <phyname> coalesce show
Show coalesce status
.
phy <phyname> coalesce disable
Disable coalesce
.
phy <phyname> coalesce enable <config-file>
Enable coalesce with given configuration
.
The configuration file contains coalesce rules:
delay=<delay>
condition=<condition>
patterns=<[offset
1+]<pattern
1>,<[offset2+]<pattern2>,
...>
delay=<delay>
condition=<condition>
patterns=<[offset
1+]<pattern
1>,<[offset2+]<pattern2>,
...>
...
delay: maximum coalescing delay in msec
.
condition:
1/0 i
.e
. 
9;not match
9;/
9;match
9; the patterns
patterns: each pattern is given as a bytestring with 
9;-
9; in
places where any byte may be present, e
.g
. 00:
11:22:-:44 will
match 00:
11:22:33:44 and 00:
11:22:33:ff:44 etc
. Offset and
pattern should be separated by 
9;+
9;, e
.g
. 18+43:34:00:
12 will
match 
9;43:34:00:
12
9; after
18 bytes of offset in Rx packet
.
dev <devname> auth <SSID> <bssid> <type:open|shared> <freq in MHz> [key 0:abcde d:
1:6
162636465]
Authenticate with the given network
.
dev <devname> connect [-w] <SSID> [<freq in MHz>] [<bssid>] [auth open|shared] [key 0:abcde d:
1:6
162636465] [mfp:req/opt/no]
Join the network with the given SSID
(and frequency, BSSID
).
With -w, wait for the connect to finish or fail
.
dev <devname> disconnect
Disconnect from the current network
.
dev <devname> cqm rssi <threshold|off> [<hysteresis>]
Set connection quality monitor RSSI threshold
.
event [-t|-T|-r] [-f]
Monitor events from the kernel
.
-t - print timestamp
-T - print absolute, human-readable timestamp
-r - print relative timestamp
-f - print full frame for auth/assoc etc
.
dev <devname> ftm start_responder [lci=<lci buffer in hex>] [civic=<civic buffer in hex>]
Start an FTM responder
. Needs a running ap interface
dev <devname> ftm get_stats
Get FTM responder statistics
.
phy <phyname> hwsim wakequeues
phy <phyname> hwsim stopqueues
phy <phyname> hwsim setps <value>
phy <phyname> hwsim getps
dev <devname> ibss join <SSID> <freq in MHz> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>] [basic-rates <rate in Mbps,rate2,
...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]
Join the IBSS cell with the given SSID, if it doesn
9;t exist create
it on the given frequency
. When fixed frequency is requested, don
9;t
join/create a cell on a different frequency
. When a fixed BSSID is
requested use that BSSID and do not adopt another cell
9;s BSSID even
if it has higher TSF and the same SSID
. If an IBSS is created, create
it with the specified basic-rates, multicast-rate and beacon-interval
.
dev <devname> ibss leave
Leave the current IBSS cell
.
features
phy
list
List all wireless devices and their capabilities
.
phy <phyname> info
Show capabilities for the specified wireless device
.
dev <devname> switch channel <channel> [6G] [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|320MHz] [ru-puncturing-bitmap <bitmap>] [beacons <count>] [block-tx]
Switch the operating channel by sending a channel switch announcement
(CSA
).6GHz channels expects 
9;6G
9; in argument
. D
efaults to 5GHz or 2GHz channels
dev <devname> switch freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|320MHz] [ru-puncturing-bitmap <bitmap>] [beacons <count>] [block-tx]
dev <devname> switch freq <control freq> [5|
10|20|40|
80|
80+
80|
160|320] [<center
1_freq> [<center2_freq>]] [ru-puncturing-bitmap <bitmap>] [beacons <count>] [block-tx]
Switch the operating channel by sending a channel switch announcement
(CSA
).
dev
List all network interfaces for wireless hardware
.
dev <devname> info
Show information for this interface
.
dev <devname> del
Remove this virtual interface
dev <devname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*] [addr <mac-addr>]
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
.
help [command]
Print usage for all or a specific command, e
.g
.
"help wowlan" or "help wowlan enable"
.
dev <devname> link
Print information about the current link, if any
.
dev <devname> measurement ftm_request <config-file> [timeout=<seconds>] [randomise[=<addr>/<mask>]]
Send an FTM request to the targets supplied in the config file
.
Each line in the file represents a target, with the following format:
<addr> bw=<[20|40|
80|
80+
80|
160]>
cf=<center_freq> [
cf1=<center_freq
1>] [
cf2=<center_freq2>] [ftms_per_burst=<samples per burst>] [ap-tsf] [asap] [bursts_exp=<num of bursts exponent>] [burst_period=<burst period>] [retries=<num of retries>] [burst_duration=<burst duration>] [preamble=<legacy,ht,vht,dmg>] [lci] [civic] [tb] [non_tb]
dev <devname> mesh_param dump
List all supported mesh parameters
dev <devname> mesh leave
Leave a mesh
.
dev <devname> mesh join <mesh ID> [[freq <freq in MHz> <NOHT|HT20|HT40+|HT40-|
80MHz> [ru-puncturing-bitmap <bitmap>]] [basic-rates <rate in Mbps,rate2,
...>]], [mcast-rate <rate in Mbps>] [beacon-interval <time in TUs>] [dtim-period <value>] [vendor_sync on|off] [<param>=<value>]*
Join a mesh with the given mesh ID with frequency, basic-rates,
mcast-rate and mesh parameters
. Basic-rates are applied only if
frequency is provided
.
dev <devname> mgmt dump frame <type as hex ab> <pattern as hex ab:cd:
..> [frame <type> <pattern>]* [count <frames>]
Register for receiving certain mgmt frames and print them
.
Frames are selected by their type and pattern containing
the first several bytes of the frame that should match
.
Example: iw dev wlan0 mgmt dump frame 40 00 frame 40 0
1:02 count
10
dev <devname> mpath dump
List known mesh paths
.
dev <devname> mpath set <destination MAC address> next_hop <next hop MAC address>
Set an existing mesh path
9;s next hop
.
dev <devname> mpath new <destination MAC address> next_hop <next hop MAC address>
Create a new mesh path
(instead of relying on automatic discovery
).
dev <devname> mpath del <MAC address>
Remove the mesh path to the given node
.
dev <devname> mpath get <MAC address>
Get information on mesh path to the given node
.
dev <devname> mpath probe <destination MAC address> frame <frame>
Inject ethernet frame to given peer overriding the next hop
lookup from mpath table
.
.Example: iw dev wlan0 mpath probe xx:xx:xx:xx:xx:xx frame 0
1:xx:xx:00
dev <devname> mpp dump
List known mesh proxy paths
.
dev <devname> mpp get <MAC address>
Get information on mesh proxy path to the given node
.
wdev <idx> nan add_func type <publish|subscribe|followup> [active] [solicited] [unsolicited] [bcast] [close_range] name <name> [info <info>] [flw_up_id <id> flw_up_req_id <id> flw_up_dest <mac>] [ttl <ttl>] [srf <include|exclude> <bf|list> [bf_idx] [bf_len] <mac
1;mac2
...>] [rx_filter <str
1:str2
...>] [tx_filter <str
1:str2
...>]
wdev <idx> nan rm_func cookie <cookie>
wdev <idx> nan config [pr
ef <pr
ef>] [bands [2GHz] [5GHz]]
wdev <idx> nan stop
wdev <idx> nan start pr
ef <pr
ef> [bands [2GHz] [5GHz]]
dev <devname> ocb leave
Leave the OCB mode network
.
dev <devname> ocb join <freq in MHz> <5MHz|
10MHz>
Join the OCB mode network
.
dev <devname> offchannel <freq> <duration>
Leave operating channel and go to the given channel for a while
.
wdev <idx> p2p stop
wdev <idx> p2p start
dev <devname> cac channel <channel> [6G] [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz]
dev <devname> cac freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz]
dev <devname> cac freq <control freq> [5|
10|20|40|
80|
80+
80|
160] [<center
1_freq> [<center2_freq>]]
dev <devname> cac trigger channel <channel> [6G] [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz]
dev <devname> cac trigger freq <frequency> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz]
dev <devname> cac trigger freq <frequency> [5|
10|20|40|
80|
80+
80|
160] [<center
1_freq> [<center2_freq>]]
Start or trigger a channel availability check
(CAC
) looking to look for
radars on the given channel
.
phy <phyname> channels
Show available channels
.
reg reload
Reload the kernel
9;s regulatory database
.
phy <phyname> reg get
Print out the devices
9; current regulatory domain information
.
reg get
Print out the kernel
9;s current regulatory domain information
.
reg set <ISO/IEC 3
166-
1 alpha2>
Notify the kernel about the current regulatory domain
.
dev <devname> roc start <freq> <time in ms>
dev <devname> scan [-u] [freq <freq>*] [HT40+|HT40-|
80MHz] [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 wil
dcard if not given
) unless passive scanning is requested
.
If channel mode/width is provided along with frequency, only
scanning on primary frequency of channel mode/width is done
.
If -u is specified print unknown data in the scan results
.
Specified
(vendor
) IEs must be well-formed
.
dev <devname> scan sched_stop
Stop an ongoing scheduled scan
.
dev <devname> scan sched_start [interval <in_msecs> | scan_plans [<interval_secs:iterations>*] <interval_secs>] [delay <in_secs>] [freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]] [coloc] [flush]
Start a scheduled scan at the specified interval on the given frequencies
with probing for the given SSIDs
(or wil
dcard if not given
) unless passive
scanning is requested
. If matches are specified, only matching results
will be returned
.
dev <devname> scan abort
Abort ongoing scan
dev <devname> scan trigger [freq <freq>*] [HT40+|HT40-|
80MHz] [duration <dur>] [ies <hex as 00:
11:
..>] [meshid <meshid>] [lowpri,flush,ap-force,duration-mandatory,coloc] [randomise[=<addr>/<mask>]] [ssid <ssid>*|passive]
Trigger a scan on the given frequencies with probing for the given
SSIDs
(or wil
dcard if not given
) unless passive scanning is requested
.
If channel mode/width is provided along with frequency, only
scanning on primary frequency of channel mode/width is done
.
Duration
(in TUs
), if specified, will be used to set dwell times
.
dev <devname> scan dump [-u]
Dump the current scan results
. If -u is specified, print unknown
data in scan results
.
dev <devname> set bitrates [legacy-<2
.4|5> <legacy rate in Mbps>*] [ht-mcs-<2
.4|5> <MCS index>*] [vht-mcs-<2
.4|5> [he-mcs-<2
.4|5|6> <NSS:MCSx,MCSy
... | NSS:MCSx-MCSy>*] [sgi-2
.4|lgi-2
.4] [sgi-5|lgi-5] [he-gi-<2
.4|5|6> <0
.8|
1.6|3
.2>] [he-ltf-<2
.4|5|6> <
1|2|4>] [he-ul-mcs-<2
.4|5> <NSS:MCS>] [eht-mcs-<2
.4|5|6> <NSS:MCSx,MCSy
... | NSS:MCSx-MCSy>*] [eht-gi-<2
.4|5|6> <0
.8|
1.6|3
.2>] [eht-ltf-<2
.4|5|6> <
1|2|4>]
Sets up the specified rate masks
.
Not passing any arguments would clear the existing mask
(if any
).
dev <devname> set ap_ps <Enable[
1]/Disable[0]>
dev <devname> set ti
dconf [peer <MAC address>] tids <mask> [override] [sretry <num>] [lretry <num>] [ampdu [on <num>|off]] [amsdu [on <num>|off]] [noack [on|off]] [rtscts [on|off]][bitrates <type [auto|fixed|limit]> [legacy-<2
.4|5> <legacy rate in Mbps>*] [ht-mcs-<2
.4|5> <MCS index>*] [vht-mcs-<2
.4|5> <NSS:MCSx,MCSy
... | NSS:MCSx-MCSy>*] [sgi-2
.4|lgi-2
.4] [sgi-5|lgi-5]]
Setup per-node TID specific configuration for TIDs selected by bitmask
.
If MAC address is not specified, then supplied TID configuration
applied to all the peers
.
Examples:
$ iw dev wlan0 set ti
dconf tids 0x
1 ampdu off
$ iw dev wlan0 set ti
dconf tids 0x5 ampdu off amsdu off rtscts on
$ iw dev wlan0 set ti
dconf tids 0x3 override ampdu on [
1-
1024] noack on rtscts on
$ iw dev wlan0 set ti
dconf peer xx:xx:xx:xx:xx:xx tids 0x
1 ampdu off tids 0x3 amsdu off rtscts on
$ iw dev wlan0 set ti
dconf peer xx:xx:xx:xx:xx:xx tids 0x2 bitrates auto
$ iw dev wlan0 set ti
dconf peer xx:xx:xx:xx:xx:xx tids 0x2 bitrates limit legacy-5 ht-mcs-5 vht-mcs-5 he-mcs-5 2:3
dev <devname> set tid_aggr_conf tid <tid> <[peer <MAC address>] aggr on|off>
Enable/disable aggregation for the TIDs
dev <devname> set tid_retry_count tid <tid> <[peer <MAC address>] short <limit> long <limit>]>
Set the retry count for the TIDs
dev <devname> set mcast_rate <rate in Mbps>
Set the multicast bitrate
.
dev <devname> set peer <MAC address>
Set interface WDS peer
.
dev <devname> set noack_map <[peer <addr>] [map]>
Set the NoAck map for the TIDs
. (0x000
9 = BE, 0x0006 = BK, 0x0030 = VI, 0x00C0 = VO
)
dev <devname> set 4addr <on|off>
Set interface 4addr
(WDS
) mode
.
dev <devname> set type <type>
Set interface type/mode
.
Valid interface types are: managed, ibss, monitor, mesh, wds
.
dev <devname> set meshid <meshid>
dev <devname> set monitor <flag>*
Set monitor flags
. 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
dev <devname> set mesh_param <param>=<value> [<param>=<value>]*
Set mesh parameter
(run command without any to see available ones
).
phy <phyname> set txq limit <packets> | memory_limit <bytes> | quantum <bytes>
Set TXQ parameters
. The limit and memory_limit are global queue limits
for the whole phy
. The quantum is the DRR scheduler quantum setting
.
Valid values:
1 - 2**32
phy <phyname> set antenna_gain <antenna gain in dBm>
Specify antenna gain
.
phy <phyname> set antenna <bitmap> | all | <tx bitmap> <rx bitmap>
Set a bitmap of allowed antennas to use for TX and RX
.
The driver may reject antenna configurations it cannot support
.
dev <devname> set txpower <auto|fixed|limit> [<tx power in mBm>]
Specify transmit power level and setting type
.
phy <phyname> set txpower <auto|fixed|limit> [<tx power in mBm>]
Specify transmit power level and setting type
.
phy <phyname> set distance <auto|distance>
Enable ACK timeout estimation algorithm
(dynack
) or set appropriate
coverage class for given link distance in meters
.
To disable dynack set valid value for coverage class
.
Valid values: 0 -
114750
phy <phyname> set coverage <coverage class>
Set coverage class
(1 for every 3 usec of air propagation time
).
Valid values: 0 - 255
.
phy <phyname> set netns { <pid> | name <nsname> }
Put this wireless device into a different network namespace:
<pid> - change network namespace by process id
<nsname> - change network namespace by name from /var/run/netns
or by absolute path
(man ip-netns
)
phy <phyname> set retry [short <limit>] [long <limit>]
Set retry limit
.
phy <phyname> set rts <rts threshold|off>
Set rts threshold
.
phy <phyname> set frag <fragmentation threshold|off>
Set fragmentation threshold
.
dev <devname> set channel <channel> [6G] [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|
160MHz|320MHz] [6G] [ru-puncturing-bitmap <bitmap>]
phy <phyname> set channel <channel> [6G] [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|
160MHz|320MHz] [ru-puncturing-bitmap <bitmap>]
dev <devname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|
160MHz|320MHz]
dev <devname> set freq <control freq> [5|
10|20|40|
80|
80+
80|
160|320] [<center
1_freq> [<center2_freq>]] [ru-puncturing-bitmap <bitmap>]
phy <phyname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|
10MHz|
80MHz|
160MHz|320MHz]
phy <phyname> set freq <control freq> [5|
10|20|40|
80|
80+
80|
160|320] [<center
1_freq> [<center2_freq>]] [ru-puncturing-bitmap <bitmap>]
Set frequency/channel the hardware is using, including HT
configuration
.
phy <phyname> set name <new name>
Rename this wireless device
.
dev <devname> set power_save <on|off>
Set power save state to on or off
.
phy <phyname> set sar_specs <sar type> <range index:sar power>*
Set SAR specs corresponding to SAR capa of wiphy
.
dev <devname> get mesh_param [<param>]
Retrieve mesh parameter
(run command without any to see available ones
).
phy <phyname> get txq
Get TXQ parameters
.
dev <devname> get power_save
Retrieve power save state
.
dev <devname> station dump [-v]
List all stations known, e
.g
. the AP on managed interfaces
dev <devname> station set <MAC address> mgmt_rts_cts <on|off>
Enable/Disable rts/cts for management frames
dev <devname> station set <MAC address> txpwr <auto|limit> [<tx power dBm>]
Set Tx power for this station
.
dev <devname> station set <MAC address> airtime_weight <weight>
Set airtime weight for this station
.
dev <devname> station set <MAC address> mesh_power_mode <active|light|deep>
Set link-specific mesh power mode for this station
dev <devname> station set <MAC address> vlan <ifindex>
Set an AP VLAN for this station
.
dev <devname> station set <MAC address> plink_action <open|block>
Set mesh peer link action for this station
(peer
).
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
)
dev <devname> station get <MAC address>
Get information for a specific station
.
dev <devname> survey dump
List all gathered channel survey data
dev <devname> vendor recvbin <oui> <subcmd> <filename|-|hex data>
dev <devname> vendor recv <oui> <subcmd> <filename|-|hex data>
dev <devname> vendor send <oui> <subcmd> <filename|-|hex data>
phy <phyname> wowlan show
Show WoWLAN status
.
phy <phyname> wowlan disable
Disable WoWLAN
.
phy <phyname> wowlan enable [any] [disconnect] [magic-packet] [gtk-rekey-failure] [eap-identity-request] [4way-handshake] [rfkill-release] [net-detect [interval <in_msecs> | scan_plans [<interval_secs:iterations>*] <interval_secs>] [delay <in_secs>] [freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]] [coloc] [flush]] [tcp <config-file>] [patterns [offset
1+]<pattern
1>
...]
Enable WoWLAN with the given triggers
.
Each pattern is given as a bytestring with 
9;-
9; in places where any byte
may be present, e
.g
. 00:
11:22:-:44 will match 00:
11:22:33:44 and
00:
11:22:33:ff:44 etc
.
Offset and pattern should be separated by 
9;+
9;, e
.g
. 18+43:34:00:
12 will match 
9;43:34:00:
12
9; after
18 bytes of offset in Rx packet
.
The TCP configuration file contains:
source=ip[:port]
dest=ip:port@mac
data=<hex data packet>
data
.interval=seconds
[wake=<hex packet with masked out bytes indicated by 
9;-
9;>]
[data
.seq=len,offset[,start]]
[data
.tok=len,offset,<token stream>]
Net-detect configuration example:
iw phy0 wowlan enable net-detect interval 5000 delay 30 freqs 24
12 2422 matches ssid foo ssid bar
Commands that use the netdev
(
9;dev
9;
) can also be given the

9;wdev
9; instead to identify the device
.
You can omit the 
9;phy
9; or 
9;dev
9; if the identification is unique,
e
.g
. "iw wlan0 info" or "iw phy0 info"
. (Don
9;t when scripting
.)
Do NOT screenscrape this tool, we don
9;t consider its output stable
.
说明什么
本文探讨了在使用SpringMVC+iBatis框架的应用中遇到的FastClassByCGLIB$$c8ef9cf1.invoke异常现象，并解释了这种现象的原因，最后给出了排查此类异常的具体步骤。
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