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28 .\" $FreeBSD: src/share/man/man4/ieee80211.4,v 1.1.2.3 2001/07/13 09:56:16 ru Exp $
29 .\" $DragonFly: src/share/man/man4/ieee80211.4,v 1.6 2008/02/01 21:40:53 swildner Exp $
36 .Nd standard interface to IEEE 802.11 devices
38 .In netproto/802_11/ieee80211.h
39 .In netproto/802_11/ieee80211_ioctl.h
41 This section describes the interface standard interface to configuration
42 and status information on IEEE 802.11 devices.
43 Most devices support options not configurable by this interface.
44 They must be set by their respective, specific control program.
45 The interface is via one
49 .Bl -tag -width ".Dv SIOCG80211"
51 Get configuration or status information.
53 Set configuration information.
56 These requests are made via a modified
59 This structure is defined as follows:
62 char i_name[IFNAMSIZ]; /* if_name, e.g. "wi0" */
63 u_int16_t i_type; /* req type */
64 int16_t i_val; /* Index or simple value */
65 int16_t i_len; /* Index or simple value */
66 void *i_data; /* Extra data */
72 the following values of
75 .Bl -tag -width ".Dv IEEE80211_IOC_POWERSAVESLEEP"
76 .It Dv IEEE80211_IOC_SSID
77 Returns the requested SSID by copying it into the buffer pointed to by
84 is \(>= 0 then the request refers to the configured value for that slot.
85 Generally, 0 is the only valid value, but some interfaces support more
89 is \-1 then the request refers to the currently active value.
90 .It Dv IEEE80211_IOC_NUMSSIDS
91 Returns the number of SSIDs this card supports.
92 In most cases, this is
93 1, but some devices such as
96 .It Dv IEEE80211_IOC_WEP
97 Returns the current WEP status in
100 .Dv IEEE80211_WEP_NOSUP , IEEE80211_WEP_ON , IEEE80211_WEP_OFF ,
102 .Dv IEEE80211_WEP_MIXED .
103 Respectively, these values mean unsupported, mandatory for all devices,
104 off, and on, but not required for all devices.
105 .It Dv IEEE80211_IOC_WEPKEY
106 Returns the requested WEP key via
110 If the device does not support returning the WEP key or the user is not
111 root then the key may be returned as all zeros.
112 Technically this is a
113 valid key, but it's the kind of key an idiot would put on his luggage so
114 we use it as a special value.
115 Generally, only four WEP keys are allowed, but some devices support more.
116 If so, the first four (0-3) are
117 the standard keys stored in volatile storage and the others are device
119 .It Dv IEEE80211_IOC_NUMWEPKEYS
120 Returns the number of WEP keys supported by this device, generally 4.
121 A device that does not support WEP may either report 0 or simply return
123 .It Dv IEEE80211_IOC_WEPTXKEY
124 Returns the WEP key used for transmission.
125 .It Dv IEEE80211_IOC_AUTHMODE
126 Returns the current authentication mode in
129 .Dv IEEE80211_AUTH_NONE , IEEE80211_AUTH_OPEN ,
131 .Dv IEEE80211_AUTH_SHARED .
132 .It Dv IEEE80211_IOC_STATIONNAME
133 Returns the station name via
137 While all known devices seem to support this is some way or another,
138 they all do it differently and it appears to not have anything to do
139 with the actual IEEE 802.11 standard so making up an answer may be
140 necessary for future devices.
141 .It Dv IEEE80211_IOC_CHANNEL
142 Returns the current direct sequence spread spectrum channel in use.
143 .It Dv IEEE80211_IOC_POWERSAVE
144 Returns the current powersaving mode.
146 .Dv IEEE80211_POWERSAVE_NOSUP , IEEE80211_POWERSAVE_OFF ,
147 .Dv IEEE80211_POWERSAVE_ON , IEEE80211_POWERSAVE_CAM ,
148 .Dv IEEE80211_POWERSAVE_PSP ,
150 .Dv IEEE80211_POWERSAVE_PSP_CAM .
152 .Dv IEEE80211_POWERSAVE_ON
153 is defined to be equal to
154 .Dv IEEE80211_POWERSAVE_CAM ,
155 but this may be incorrect.
156 .It Dv IEEE80211_IOC_POWERSAVESLEEP
157 Returns the powersave sleep time in msec in
163 the following values of
166 .Bl -tag -width ".Dv IEEE80211_IOC_POWERSAVESLEEP"
167 .It Dv IEEE80211_IOC_SSID
168 Set the desired SSID for infrastructure and ad-hoc modes to value given
173 The length should be no longer then 32 characters.
174 .It Dv IEEE80211_IOC_WEP
175 Set the current WEP mode to the value given in
177 Valid values are the same as those for this value above.
179 do not support all modes may choose to either return
181 or choose a reasonable alternate (supported) setting.
182 .It Dv IEEE80211_IOC_WEPKEY
183 Set the WEP key indicated by
185 to the value given by
189 Generally, valid values of
191 are 0, 5, and 13 though not all devices with WEP support have support
193 .It Dv IEEE80211_IOC_WEPTXKEY
194 Set the WEP key used for transmission to the value in
196 Not all values which are valid for setting keys may be valid for setting
197 transmit keys due to strange device interfaces.
198 .It Dv IEEE80211_IOC_AUTHMODE
199 Set the current authorization mode to the value given in
201 Valid values are given above.
202 Not all devices support this.
203 .It Dv IEEE80211_IOC_STATIONNAME
204 Set the station name to the value given by
208 The standard does not appear to deal with this feature so the range of
209 valid values may vary from device to device.
210 .It Dv IEEE80211_IOC_CHANNEL
211 Set the desired ad-hoc channel to the value given by
213 On some devices this has an impact on infrastructure mode as well.
214 Valid values are 1-14, but 0 should be allowed and should return the
215 device to the default value.
216 May devices support this directly by
217 converting any invalid value to the default value.
218 .It Dv IEEE80211_IOC_POWERSAVE
219 Set the current powersaving mode to the value given in
221 Valid values are the same as those for this value above.
223 do not support all modes may choose to either return
225 or choose a reasonable alternate (supported) setting.
228 .It Dv IEEE80211_IOC_POWERSAVESLEEP
229 Set the powersave sleep time in msec to the value in