path: root/static/freebsd/man4/net80211.4 3.html

<table class="head">
  <tr>
    <td class="head-ltitle">NET80211(4)</td>
    <td class="head-vol">Device Drivers Manual</td>
    <td class="head-rtitle">NET80211(4)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">net80211</code> &#x2014;
    <span class="Nd">standard interface to IEEE 802.11 devices</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="In">#include
    &lt;<a class="In">sys/types.h</a>&gt;</code>
  <br/>
  <code class="In">#include &lt;<a class="In">sys/socket.h</a>&gt;</code>
  <br/>
  <code class="In">#include &lt;<a class="In">net/if.h</a>&gt;</code>
  <br/>
  <code class="In">#include &lt;<a class="In">net/ethernet.h</a>&gt;</code>
  <br/>
  <code class="In">#include
    &lt;<a class="In">net80211/ieee80211_ioctl.h</a>&gt;</code></p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">This section describes the standard programming interface to
    configure and retrieve status information for IEEE 802.11 devices that
    depend on the <a class="Xr">wlan(4)</a> module for operation. The interface
    is via one of the following <a class="Xr">ioctl(2)</a> calls on a
  socket:</p>
<dl class="Bl-tag">
  <dt id="SIOCG80211"><a class="permalink" href="#SIOCG80211"><code class="Dv">SIOCG80211</code></a></dt>
  <dd>Get configuration or status information.</dd>
  <dt id="SIOCS80211"><a class="permalink" href="#SIOCS80211"><code class="Dv">SIOCS80211</code></a></dt>
  <dd>Set configuration information.</dd>
</dl>
<p class="Pp">These requests are made via a modified <var class="Vt">ifreq</var>
    structure. This structure is defined as follows:</p>
<div class="Bd Pp Li">
<pre>struct ieee80211req {
	char		i_name[IFNAMSIZ];	/* if_name, e.g. &quot;wi0&quot; */
	uint16_t	i_type;			/* req type */
	int16_t		i_val;			/* Index or simple value */
	int16_t		i_len;			/* Index or simple value */
	void		*i_data;		/* Extra data */
};</pre>
</div>
<p class="Pp">Requests that are not supported by the underlying device return -1
    and set the global variable errno to <code class="Er">EOPNOTSUPP</code>.
    <code class="Dv">SIOCG80211</code> requests that return data to an
    application place small values in <var class="Va">i_val</var> or in a
    user-specified buffer pointed to by <var class="Va">i_data</var>. When an
    indirect buffer is used <var class="Va">i_len</var> specifies how large the
    indirect buffer is and on return it is set by the system to the actual
    amount of data returned. <code class="Dv">SIOCS80211</code> requests use a
    similar scheme with data passed to the system taken either from
    <var class="Va">i_val</var> or an indirect buffer pointed to by
    <var class="Va">i_data</var>.</p>
<p class="Pp">For <code class="Dv">SIOCG80211</code> the following values of
    <var class="Va">i_type</var> are valid:</p>
<dl class="Bl-tag">
  <dt id="IEEE80211_IOC_AMPDU"><a class="permalink" href="#IEEE80211_IOC_AMPDU"><code class="Dv">IEEE80211_IOC_AMPDU</code></a></dt>
  <dd>Return whether or not AMPDU is enabled in <var class="Va">i_val</var>.
      AMPDU is an aggregation scheme that is part of the 802.11n specification
      and is used only when operating on an HT channel. The value returned is
      one of: 0 (AMPDU disabled), 1 (AMPDU enabled for transmit), 2 (AMPDU
      enabled for receive), and 3 (AMPDU enabled for transmit and receive). The
      802.11n specification says a compliant station must receive AMPDU but may
      not support transmitting AMPDU frames. Disabling AMPDU receive is mainly
      useful for testing and working around bugs.</dd>
  <dt id="IEEE80211_IOC_AMPDU_DENSITY"><a class="permalink" href="#IEEE80211_IOC_AMPDU_DENSITY"><code class="Dv">IEEE80211_IOC_AMPDU_DENSITY</code></a></dt>
  <dd>Return the minimum density for bursting AMPDU frames in
      <var class="Va">i_val</var>. The value returned is one of: 0 (no time
      restriction), 1 (1/4 usec), 2 (1/2 usec), 3 (1 usec), 4 (2 usec), 5 (4
      usec), 6 (8 usec), and 7 (16 usec).</dd>
  <dt id="IEEE80211_IOC_AMPDU_LIMIT"><a class="permalink" href="#IEEE80211_IOC_AMPDU_LIMIT"><code class="Dv">IEEE80211_IOC_AMPDU_LIMIT</code></a></dt>
  <dd>Return the limit on the size of AMPDU frames in
      <var class="Va">i_val</var>. The value returned is one of: 0 (8
      kilobytes), 1 (16 kilobytes), 2 (32 kilobytes), and 3 (64 kilobytes).</dd>
  <dt id="IEEE80211_IOC_AMSDU"><a class="permalink" href="#IEEE80211_IOC_AMSDU"><code class="Dv">IEEE80211_IOC_AMSDU</code></a></dt>
  <dd>Return whether or not AMSDU is enabled in <var class="Va">i_val</var>.
      AMSDU is an aggregation scheme that is part of the 802.11n specification
      and is used only when operating on an HT channel. The value returned is
      one of: 0 (AMSDU disabled), 1 (AMSDU enabled for transmit), 2 (AMSDU
      enabled for receive), and 3 (AMSDU enabled for transmit and receive). The
      802.11n specification says a compliant station must receive AMSDU but may
      not support transmitting AMSDU frames. Disabling AMSDU receive is mainly
      useful for testing and working around bugs.</dd>
  <dt id="IEEE80211_IOC_AMSDU_LIMIT"><a class="permalink" href="#IEEE80211_IOC_AMSDU_LIMIT"><code class="Dv">IEEE80211_IOC_AMSDU_LIMIT</code></a></dt>
  <dd>Return the limit on the size of AMSDU frames in
      <var class="Va">i_val</var>. The value returned is one of: 3839 (bytes)
      and 7935 (bytes). Note these values are specified by 802.11n; arbitrary
      values are not allowed.</dd>
  <dt id="IEEE80211_IOC_APBRIDGE"><a class="permalink" href="#IEEE80211_IOC_APBRIDGE"><code class="Dv">IEEE80211_IOC_APBRIDGE</code></a></dt>
  <dd>Return whether AP bridging is enabled in <var class="Va">i_val</var>.
      Normally packets sent between stations associated to the same access point
      are delivered without going through system layers that do packet
      filtering; when AP bridging is disabled packets are passed up the system
      to be forwarded using some other mechanism. This value will be non-zero
      when AP bridging is enabled and otherwise zero.</dd>
  <dt id="IEEE80211_IOC_APPIE"><a class="permalink" href="#IEEE80211_IOC_APPIE"><code class="Dv">IEEE80211_IOC_APPIE</code></a></dt>
  <dd>Return an application information element via
      <var class="Va">i_data</var>. Application IE's are maintained for many
      802.11 frames; the request must identify the frame to return an IE for in
      <var class="Va">i_val</var>. For example, to retrieve the IE sent in each
      Beacon frame <var class="Va">i_val</var> would be set to
      <var class="Va">IEEE80211_FC0_SUBTYPE_BEACON</var> |
      <var class="Va">IEEE80211_FC0_TYPE_MGT</var>. If no information element is
      installed then <code class="Er">EINVAL</code> is returned. If the data
      buffer for returning data is too small to hold the information element the
      value is truncated; this permits querying the presence of data by
      requesting zero bytes of data be returned.</dd>
  <dt id="IEEE80211_IOC_AUTHMODE"><a class="permalink" href="#IEEE80211_IOC_AUTHMODE"><code class="Dv">IEEE80211_IOC_AUTHMODE</code></a></dt>
  <dd>Return the current authentication mode in <var class="Va">i_val</var>.
      Valid values are <code class="Dv">IEEE80211_AUTH_NONE</code> (no
      authentication), <code class="Dv">IEEE80211_AUTH_OPEN</code> (open
      authentication), <code class="Dv">IEEE80211_AUTH_SHARED</code> (shared key
      authentication), <code class="Dv">IEEE80211_AUTH_8021X</code> (802.1x only
      authentication), and <code class="Dv">IEEE80211_AUTH_WPA</code>
      (WPA/802.11i/802.1x authentication).</dd>
  <dt id="IEEE80211_IOC_BEACON_INTERVAL"><a class="permalink" href="#IEEE80211_IOC_BEACON_INTERVAL"><code class="Dv">IEEE80211_IOC_BEACON_INTERVAL</code></a></dt>
  <dd>Return the time between Beacon frames (in TU) in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_BGSCAN"><a class="permalink" href="#IEEE80211_IOC_BGSCAN"><code class="Dv">IEEE80211_IOC_BGSCAN</code></a></dt>
  <dd>Return whether background scanning is enabled in
      <var class="Va">i_val</var>. When this value is non-zero and operating in
      station mode the station will periodically leave the current channel and
      scan for neighboring stations. See also
      <code class="Dv">IEEE80211_IOC_BGSCAN_IDLE</code> and
      <code class="Dv">IEEE80211_IOC_BGSCAN_INTERVAL</code>.</dd>
  <dt id="IEEE80211_IOC_BGSCAN_IDLE"><a class="permalink" href="#IEEE80211_IOC_BGSCAN_IDLE"><code class="Dv">IEEE80211_IOC_BGSCAN_IDLE</code></a></dt>
  <dd>Return in <var class="Va">i_val</var> the minimum time (msecs) a station
      must be idle (i.e. not transmitting or receiving frames) before it will do
      a background scan. See also
      <code class="Dv">IEEE80211_IOC_BGSCAN_INTERVAL</code>.</dd>
  <dt id="IEEE80211_IOC_BGSCAN_INTERVAL"><a class="permalink" href="#IEEE80211_IOC_BGSCAN_INTERVAL"><code class="Dv">IEEE80211_IOC_BGSCAN_INTERVAL</code></a></dt>
  <dd>Return in <var class="Va">i_val</var> the minimum time (seconds) between
      background scan operations. See also
      <code class="Dv">IEEE80211_IOC_BGSCAN_IDLE</code>.</dd>
  <dt id="IEEE80211_IOC_BMISSTHRESHOLD"><a class="permalink" href="#IEEE80211_IOC_BMISSTHRESHOLD"><code class="Dv">IEEE80211_IOC_BMISSTHRESHOLD</code></a></dt>
  <dd>Return in <var class="Va">i_val</var> the number of consecutive missed
      Beacon frames before the system will attempt to roam to a different/better
      access point.</dd>
  <dt id="IEEE80211_IOC_BSSID"><a class="permalink" href="#IEEE80211_IOC_BSSID"><code class="Dv">IEEE80211_IOC_BSSID</code></a></dt>
  <dd>Return the MAC address for the current BSS identifier via
      <var class="Va">i_data</var>. When the interface is running, the bssid is
      either the value configured locally (e.g. for an IBSS network started by
      the local station) or the value adopted when joining an existing network.
      For WDS interfaces this value is the address of the remote station. When
      the interface is not running, the bssid returned is the desired bssid, if
      any, that has been configured.</dd>
  <dt id="IEEE80211_IOC_BURST"><a class="permalink" href="#IEEE80211_IOC_BURST"><code class="Dv">IEEE80211_IOC_BURST</code></a></dt>
  <dd>Return whether or not packet bursting is enabled in
      <var class="Va">i_val</var>. If this value is non-zero then the system
      will try to send packets closely spaced to improve throughput.</dd>
  <dt id="IEEE80211_IOC_CHANINFO"><a class="permalink" href="#IEEE80211_IOC_CHANINFO"><code class="Dv">IEEE80211_IOC_CHANINFO</code></a></dt>
  <dd>Return the set of available channels via <var class="Va">i_data</var>.
      Note this data should be used by user applications to map between channel
      specifications (frequency and attributes) and IEEE channel numbers as user
      applications may not have the necessary information to do this directly
      (e.g. for 900MHz radios, operation in the Public Safety Band).</dd>
  <dt id="IEEE80211_IOC_CHANLIST"><a class="permalink" href="#IEEE80211_IOC_CHANLIST"><code class="Dv">IEEE80211_IOC_CHANLIST</code></a></dt>
  <dd>Return the current list of usable channels via
      <var class="Va">i_data</var>. The channel list is returned as a bit vector
      with bit N set to 1 if IEEE channel number N is available for use.</dd>
  <dt id="IEEE80211_IOC_CHANNEL"><a class="permalink" href="#IEEE80211_IOC_CHANNEL"><code class="Dv">IEEE80211_IOC_CHANNEL</code></a></dt>
  <dd>Return the IEEE channel number of the current channel in
      <var class="Va">i_val</var>. Note this request is deprecated; use
      <code class="Dv">IEEE80211_IOC_CURCHAN</code> instead.</dd>
  <dt id="IEEE80211_IOC_COUNTERMEASURES"><a class="permalink" href="#IEEE80211_IOC_COUNTERMEASURES"><code class="Dv">IEEE80211_IOC_COUNTERMEASURES</code></a></dt>
  <dd>Return whether TKIP Countermeasures are enabled in
      <var class="Va">i_val</var>. This value will be non-zero when
      Countermeasures are enabled and otherwise zero.</dd>
  <dt id="IEEE80211_IOC_CURCHAN"><a class="permalink" href="#IEEE80211_IOC_CURCHAN"><code class="Dv">IEEE80211_IOC_CURCHAN</code></a></dt>
  <dd>Return information for the current channel via
      <var class="Va">i_data</var>. This information includes the IEEE channel
      number, the frequency, and attributes that describe the operating
      constraints (e.g. Passive Scan, DFS, usage restrictions).</dd>
  <dt id="IEEE80211_IOC_DEVCAPS"><a class="permalink" href="#IEEE80211_IOC_DEVCAPS"><code class="Dv">IEEE80211_IOC_DEVCAPS</code></a></dt>
  <dd>Return device capabilities in the data buffer pointed at by
      <var class="Va">i_data</var>. The buffer must be large enough to return
      the number of available channels but otherwise may be made small to limit
      how much information is returned.</dd>
  <dt id="IEEE80211_IOC_DFS"><a class="permalink" href="#IEEE80211_IOC_DFS"><code class="Dv">IEEE80211_IOC_DFS</code></a></dt>
  <dd>Return whether or not Dynamic Frequency Selection (DFS) is enabled in
      <var class="Va">i_val</var>. DFS embodies several facilities including
      detection of overlapping radar signals, dynamic transmit power control,
      and channel selection according to a least-congested criteria. DFS support
      is mandatory for some 5GHz frequencies in certain locales (e.g. ETSI). By
      default DFS is enabled according to the regulatory definitions and the
      current country code, regdomain, and channel.</dd>
  <dt id="IEEE80211_IOC_DOTD"><a class="permalink" href="#IEEE80211_IOC_DOTD"><code class="Dv">IEEE80211_IOC_DOTD</code></a></dt>
  <dd>Return whether or not 802.11d support is enabled in
      <var class="Va">i_val</var>. When 802.11d is enabled in station mode,
      Beacon frames that advertise a country code different than the currently
      configured country code will cause an event to be dispatched to user
      applications. This event can be used by the station to adopt that country
      code and operate according to the associated regulatory constraints. When
      operating as an access point with 802.11d enabled the Beacon and
      ProbeResponse frames transmitted will advertise the current regulatory
      domain settings.</dd>
  <dt id="IEEE80211_IOC_DOTH"><a class="permalink" href="#IEEE80211_IOC_DOTH"><code class="Dv">IEEE80211_IOC_DOTH</code></a></dt>
  <dd>Return whether 802.11h support is enabled in <var class="Va">i_val</var>.
      When 802.11h is enabled Beacon and ProbeResponse frames will have the
      SpectrumMgt bit set in the capabilities field and country and power
      constraint information elements will be present. 802.11h support also
      includes handling Channel Switch Announcements (CSA) which are a mechanism
      to coordinate channel changes by an access point. By default 802.11h is
      enabled if the device is capable.</dd>
  <dt id="IEEE80211_IOC_DROPUNENCRYPTED"><a class="permalink" href="#IEEE80211_IOC_DROPUNENCRYPTED"><code class="Dv">IEEE80211_IOC_DROPUNENCRYPTED</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether unencrypted packets
      transmit/received should be discarded. This value will be zero if
      unencrypted packets will be accepted and non-zero if they are to be
      discarded.</dd>
  <dt id="IEEE80211_IOC_DTIM_PERIOD"><a class="permalink" href="#IEEE80211_IOC_DTIM_PERIOD"><code class="Dv">IEEE80211_IOC_DTIM_PERIOD</code></a></dt>
  <dd>Return the period (in beacon intervals) between DTIM events in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_DWDS"><a class="permalink" href="#IEEE80211_IOC_DWDS"><code class="Dv">IEEE80211_IOC_DWDS</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether or not Dynamic WDS support
      is enabled. Dynamic WDS is a facility by which packets may be tunneled
      over normal Infrastructure BSS associations using 4-address (WDS)
    frames.</dd>
  <dt id="IEEE80211_IOC_FF"><a class="permalink" href="#IEEE80211_IOC_FF"><code class="Dv">IEEE80211_IOC_FF</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether Atheros fast-frames
      support is enabled. Fast-frames is a non-standard protocol extension that
      aggregates multiple frames to improve throughput. Note that enabling
      fast-frames support does not guarantee use; the client and access point
      must negotiate its use.</dd>
  <dt id="IEEE80211_IOC_FRAGTHRESHOLD"><a class="permalink" href="#IEEE80211_IOC_FRAGTHRESHOLD"><code class="Dv">IEEE80211_IOC_FRAGTHRESHOLD</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, the threshold (in bytes) for
      enabling fragmentation frames. Packets larger than this value will
      automatically be split into multiple fragmented frames that are sent one
      after the other.</dd>
  <dt id="IEEE80211_IOC_GREENFIELD"><a class="permalink" href="#IEEE80211_IOC_GREENFIELD"><code class="Dv">IEEE80211_IOC_GREENFIELD</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether or not Greenfield preamble
      use is enabled. This setting is meaningful only when operating with
      802.11n on an HT channel.</dd>
  <dt id="IEEE80211_IOC_HIDESSID"><a class="permalink" href="#IEEE80211_IOC_HIDESSID"><code class="Dv">IEEE80211_IOC_HIDESSID</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether SSID hiding/cloaking is
      enabled. SSID hiding is only meaningful when operating as an access point.
      When this is enabled Beacon frames do not include the SSID and
      ProbeRequest frames are not answered unless they include the AP's SSID.
      This value will be non-zero when SSID hiding is enabled and otherwise
      zero.</dd>
  <dt id="IEEE80211_IOC_HTCOMPAT"><a class="permalink" href="#IEEE80211_IOC_HTCOMPAT"><code class="Dv">IEEE80211_IOC_HTCOMPAT</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, whether or not 802.11n
      compatibility support is enabled. The 802.11n protocol specification went
      through several incompatible iterations. Some vendors implemented 11n
      support to older specifications that will not interoperate with a purely
      11n-compliant station. In particular the information elements included in
      management frames for old devices are different. When compatibility
      support is enabled both standard and compatible data will be provided
      and/or accepted.</dd>
  <dt id="IEEE80211_IOC_HTCONF"><a class="permalink" href="#IEEE80211_IOC_HTCONF"><code class="Dv">IEEE80211_IOC_HTCONF</code></a></dt>
  <dd>Return the setting for automatic promotion of HT channels in
      <var class="Va">i_val</var>. Promotion happens when the system must select
      a channel and may choose between legacy, HT20, and HT40 operation (e.g.
      when scanning). Valid values are: 0 (do not promote, use legacy), 1
      (promote to HT20), and 2 (promote to HT40).</dd>
  <dt id="IEEE80211_IOC_HTPROTMODE"><a class="permalink" href="#IEEE80211_IOC_HTPROTMODE"><code class="Dv">IEEE80211_IOC_HTPROTMODE</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, the technique used to protect HT
      frames in a mixed 802.11n network. Valid values are:
      <code class="Dv">IEEE80211_PROTMODE_OFF</code> (no protection enabled) and
      <code class="Dv">IEEE80211_PROTMODE_RTSCTS</code> (send RTS and wait for
      CTS).</dd>
  <dt id="IEEE80211_IOC_HWMP_MAXHOPS"><a class="permalink" href="#IEEE80211_IOC_HWMP_MAXHOPS"><code class="Dv">IEEE80211_IOC_HWMP_MAXHOPS</code></a></dt>
  <dd>Return the maximum acceptable hop count in an HWMP path in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_HWMP_ROOTMODE"><a class="permalink" href="#IEEE80211_IOC_HWMP_ROOTMODE"><code class="Dv">IEEE80211_IOC_HWMP_ROOTMODE</code></a></dt>
  <dd>Return the setting for Mesh root mode operation in
      <var class="Va">i_val</var>. Valid values are:
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_DISABLED</code> (root mode is
      disabled), <code class="Dv">IEEE80211_HWMP_ROOTMODE_NORMAL</code> (send
      broadcast Path Request frames),
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_PROACTIVE</code> (send broadcast
      Path Request frames and force replies) and
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_RANN</code> (send broadcast Root
      Announcement (RANN) frames).</dd>
  <dt id="IEEE80211_IOC_IC_NAME"><a class="permalink" href="#IEEE80211_IOC_IC_NAME"><code class="Dv">IEEE80211_IOC_IC_NAME</code></a></dt>
  <dd>Return the underlying hardware <a class="Xr">device(9)</a> name in the
      buffer pointed to by <var class="Va">i_data</var> and the name length
      including terminating NUL character in <var class="Va">i_len</var>. If the
      buffer length is too small to hold the full name
      <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_INACTIVITY"><a class="permalink" href="#IEEE80211_IOC_INACTIVITY"><code class="Dv">IEEE80211_IOC_INACTIVITY</code></a></dt>
  <dd>Return whether or not the system handles inactivity processing in
      <var class="Va">i_val</var>. When inactivity processing is enabled the
      system will track stations that have not transmitted frames and
      periodically probe them to check if they are still present. Stations that
      are inactive and do not respond to probes are dropped.</dd>
  <dt id="IEEE80211_IOC_MACCMD"><a class="permalink" href="#IEEE80211_IOC_MACCMD"><code class="Dv">IEEE80211_IOC_MACCMD</code></a></dt>
  <dd>Return information about the state of the MAC address access control list
      (ACL) system. There are two requests supported:
      <code class="Dv">IEEE80211_MACCMD_POLICY</code> (to retrieve the current
      policy in <var class="Va">i_val ),</var> and
      <code class="Dv">IEEE80211_MACCMD_LIST</code> to retrieve the list
      installed/active ACL's via <var class="Va">i_data</var>. The
      <a class="Xr">wlan_acl(4)</a> module must be installed and enabled or
      <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_MESH_AP"><a class="permalink" href="#IEEE80211_IOC_MESH_AP"><code class="Dv">IEEE80211_IOC_MESH_AP</code></a></dt>
  <dd>Return whether or not Mesh AP support is enabled in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_ID"><a class="permalink" href="#IEEE80211_IOC_MESH_ID"><code class="Dv">IEEE80211_IOC_MESH_ID</code></a></dt>
  <dd>Return the Mesh ID in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_FWRD"><a class="permalink" href="#IEEE80211_IOC_MESH_FWRD"><code class="Dv">IEEE80211_IOC_MESH_FWRD</code></a></dt>
  <dd>Return whether or not packet forwarding support is enabled in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_PP_METRIC"><a class="permalink" href="#IEEE80211_IOC_MESH_PP_METRIC"><code class="Dv">IEEE80211_IOC_MESH_PP_METRIC</code></a></dt>
  <dd>Return the link metric protocol in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_PP_PATH"><a class="permalink" href="#IEEE80211_IOC_MESH_PP_PATH"><code class="Dv">IEEE80211_IOC_MESH_PP_PATH</code></a></dt>
  <dd>Return the path selection protocol in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_RTCMD"><a class="permalink" href="#IEEE80211_IOC_MESH_RTCMD"><code class="Dv">IEEE80211_IOC_MESH_RTCMD</code></a></dt>
  <dd>Return information about the state of the Mesh routing tables. One request
      is supported: <code class="Dv">IEEE80211_MESH_RTCMD_LIST</code> to
      retrieve the contents of the routing table in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_TTL"><a class="permalink" href="#IEEE80211_IOC_MESH_TTL"><code class="Dv">IEEE80211_IOC_MESH_TTL</code></a></dt>
  <dd>Return, in <var class="Va">i_val</var>, the Mesh Time To Live (TTL)
      setting installed in packets transmitted by this mesh node.</dd>
  <dt id="IEEE80211_IOC_NUMSSIDS"><a class="permalink" href="#IEEE80211_IOC_NUMSSIDS"><code class="Dv">IEEE80211_IOC_NUMSSIDS</code></a></dt>
  <dd>Return the number of SSIDs supported in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_NUMWEPKEYS"><a class="permalink" href="#IEEE80211_IOC_NUMWEPKEYS"><code class="Dv">IEEE80211_IOC_NUMWEPKEYS</code></a></dt>
  <dd>Return the number of WEP keys supported in
    <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_POWERSAVE"><a class="permalink" href="#IEEE80211_IOC_POWERSAVE"><code class="Dv">IEEE80211_IOC_POWERSAVE</code></a></dt>
  <dd>Return the current powersaving mode in <var class="Va">i_val</var>. Valid
      values are <code class="Dv">IEEE80211_POWERSAVE_OFF</code> (power save
      operation is disabled) and <code class="Dv">IEEE80211_POWERSAVE_ON</code>
      (power save operation is enabled).</dd>
  <dt id="IEEE80211_IOC_POWERSAVESLEEP"><a class="permalink" href="#IEEE80211_IOC_POWERSAVESLEEP"><code class="Dv">IEEE80211_IOC_POWERSAVESLEEP</code></a></dt>
  <dd>Return the powersave sleep time in TU in <var class="Va">i_val</var>. This
      value is also termed the listen interval and represents the maximum time a
      station will sleep before waking to retrieve packets buffered by an access
      point.</dd>
  <dt id="IEEE80211_IOC_PRIVACY"><a class="permalink" href="#IEEE80211_IOC_PRIVACY"><code class="Dv">IEEE80211_IOC_PRIVACY</code></a></dt>
  <dd>Return the current MLME setting for PRIVACY in
      <var class="Va">i_val</var>. When PRIVACY is enabled all data packets must
      be encrypted. This value will be zero if PRIVACY is disabled and non-zero
      when PRIVACY is enabled.</dd>
  <dt id="IEEE80211_IOC_PROTMODE"><a class="permalink" href="#IEEE80211_IOC_PROTMODE"><code class="Dv">IEEE80211_IOC_PROTMODE</code></a></dt>
  <dd>Return the current 802.11g protection mode in <var class="Va">i_val</var>.
      Protection is the mechanism used to safeguard 802.11b stations operating
      on an 802.11g network. Valid values are
      <code class="Dv">IEEE80211_PROTMODE_OFF</code> (no protection enabled),
      <code class="Dv">IEEE80211_PROTMODE_CTS</code> (send CTS to yourself), and
      <code class="Dv">IEEE80211_PROTMODE_RTSCTS</code> (send RTS and wait for
      CTS).</dd>
  <dt id="IEEE80211_IOC_PUREG"><a class="permalink" href="#IEEE80211_IOC_PUREG"><code class="Dv">IEEE80211_IOC_PUREG</code></a></dt>
  <dd>Return whether ``pure 11g'' mode is enabled in
      <var class="Va">i_val</var>. This setting is meaningful only for access
      point operation; when non-zero, 802.11b stations will not be allowed to
      associate.</dd>
  <dt id="IEEE80211_IOC_PUREN"><a class="permalink" href="#IEEE80211_IOC_PUREN"><code class="Dv">IEEE80211_IOC_PUREN</code></a></dt>
  <dd>Return whether ``pure 11n'' mode is enabled in
      <var class="Va">i_val</var>. This setting is meaningful only for access
      point operation; when non-zero, legacy (non-11n capable) stations will not
      be allowed to associate.</dd>
  <dt id="IEEE80211_IOC_REGDOMAIN"><a class="permalink" href="#IEEE80211_IOC_REGDOMAIN"><code class="Dv">IEEE80211_IOC_REGDOMAIN</code></a></dt>
  <dd>Return the regulatory state in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_RIFS"><a class="permalink" href="#IEEE80211_IOC_RIFS"><code class="Dv">IEEE80211_IOC_RIFS</code></a></dt>
  <dd>Return whether or not Reduced InterFrame Spacing (RIFS) is enabled in
      <var class="Va">i_val</var>. This setting is meaningful only when
      operating with 802.11n on an HT channel.</dd>
  <dt id="IEEE80211_IOC_ROAM"><a class="permalink" href="#IEEE80211_IOC_ROAM"><code class="Dv">IEEE80211_IOC_ROAM</code></a></dt>
  <dd>Return station roaming parameters in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_ROAMING"><a class="permalink" href="#IEEE80211_IOC_ROAMING"><code class="Dv">IEEE80211_IOC_ROAMING</code></a></dt>
  <dd>Return the current roaming mode in <var class="Va">i_val</var>. Roaming
      mode specifies which entity controls operation of the MLME state machine
      when operating as a station in an Infrastructure BSS. Valid values are:
      <code class="Dv">IEEE80211_ROAMING_DEVICE</code> (driver/firmware is in
      control), <code class="Dv">IEEE80211_ROAMING_AUTO</code> (host 802.11
      layer is in control), and <code class="Dv">IEEE80211_ROAMING_MANUAL</code>
      (application is in control).</dd>
  <dt id="IEEE80211_IOC_RTSTHRESHOLD"><a class="permalink" href="#IEEE80211_IOC_RTSTHRESHOLD"><code class="Dv">IEEE80211_IOC_RTSTHRESHOLD</code></a></dt>
  <dd>Return the threshold (in bytes) for enabling transmission of RTS frames in
      <var class="Va">i_val</var>. Packets larger than this value will
      automatically have an RTS frame sent preceding it to reduce the likelihood
      of packet loss.</dd>
  <dt id="IEEE80211_IOC_SCAN_RESULTS"><a class="permalink" href="#IEEE80211_IOC_SCAN_RESULTS"><code class="Dv">IEEE80211_IOC_SCAN_RESULTS</code></a></dt>
  <dd>Return the current contents of the scan cache in the data area pointed to
      by <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_SCANVALID"><a class="permalink" href="#IEEE80211_IOC_SCANVALID"><code class="Dv">IEEE80211_IOC_SCANVALID</code></a></dt>
  <dd>Return in <var class="Va">i_val</var> how long (in seconds) results from a
      scan operation will be considered valid. When scan results are no longer
      valid and they are needed (e.g. to roam) the system will initiate a scan
      operation to replenish the scan cache.</dd>
  <dt id="IEEE80211_IOC_SHORTGI"><a class="permalink" href="#IEEE80211_IOC_SHORTGI"><code class="Dv">IEEE80211_IOC_SHORTGI</code></a></dt>
  <dd>Return whether or not Short Guard Interval (SGI) is enabled in
      <var class="Va">i_val</var>. Note SGI is only used when operating with
      802.11n on an HT channel.</dd>
  <dt id="IEEE80211_IOC_SMPS"><a class="permalink" href="#IEEE80211_IOC_SMPS"><code class="Dv">IEEE80211_IOC_SMPS</code></a></dt>
  <dd>Return the Spatial Multiplexing Power Save (SMPS) setting in
      <var class="Va">i_val</var>. This setting is meaningful only when
      operating with 802.11n on an HT channel. Valid values are:
      <code class="Dv">IEEE80211_HTCAP_SMPS_DYNAMIC</code> (Dynamic SMPS is
      enabled), <code class="Dv">IEEE80211_HTCAP_SMPS_ENA</code> (Static SMPS is
      enabled), and <code class="Dv">IEEE80211_HTCAP_SMPS_OFF</code> (SMPS is
      disabled).</dd>
  <dt id="IEEE80211_IOC_SSID"><a class="permalink" href="#IEEE80211_IOC_SSID"><code class="Dv">IEEE80211_IOC_SSID</code></a></dt>
  <dd>Return the requested SSID in the buffer pointed to by
      <var class="Va">i_data</var>. If <var class="Va">i_val</var> is &#x2265; 0
      then the request refers to the configured value for that slot. Generally,
      0 is the only valid value, but some interfaces support more SSIDs.</dd>
  <dt id="IEEE80211_IOC_STA_INFO"><a class="permalink" href="#IEEE80211_IOC_STA_INFO"><code class="Dv">IEEE80211_IOC_STA_INFO</code></a></dt>
  <dd>Return information about the current state of the specified station(s) via
      <var class="Va">i_data</var>. The MAC address of a single station may be
      passed in or, if the broadcast address is supplied, information about all
      stations will be returned. If a single station is requested and the MAC
      address is unknown then <code class="Er">ENOENT</code> will be
    returned.</dd>
  <dt id="IEEE80211_IOC_STA_STATS"><a class="permalink" href="#IEEE80211_IOC_STA_STATS"><code class="Dv">IEEE80211_IOC_STA_STATS</code></a></dt>
  <dd>Return collected statistics for the specified station via
      <var class="Va">i_data</var>. The MAC address of the desired station is
      passed in; if it is unknown <code class="Er">ENOENT</code> will be
      returned.</dd>
  <dt id="IEEE80211_IOC_STA_VLAN"><a class="permalink" href="#IEEE80211_IOC_STA_VLAN"><code class="Dv">IEEE80211_IOC_STA_VLAN</code></a></dt>
  <dd>Return any VLAN tag assigned to a station via
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOT"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOT"><code class="Dv">IEEE80211_IOC_TDMA_SLOT</code></a></dt>
  <dd>Return the slot number for the station in <var class="Va">i_val</var>.
      Slot number zero is the master station in a TDMA network.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOTCNT"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOTCNT"><code class="Dv">IEEE80211_IOC_TDMA_SLOTCNT</code></a></dt>
  <dd>Return the count of slots in the TDMA network in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOTLEN"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOTLEN"><code class="Dv">IEEE80211_IOC_TDMA_SLOTLEN</code></a></dt>
  <dd>Return the length (in usecs) of the TDMA slot assigned to each station in
      the network in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_TDMA_BINTERVAL"><a class="permalink" href="#IEEE80211_IOC_TDMA_BINTERVAL"><code class="Dv">IEEE80211_IOC_TDMA_BINTERVAL</code></a></dt>
  <dd>Return the number of superframes between Beacon frames in
      <var class="Va">i_val</var>. A TDMA network with N slots and slot length T
      has a superframe of NxT.</dd>
  <dt id="IEEE80211_IOC_TSN"><a class="permalink" href="#IEEE80211_IOC_TSN"><code class="Dv">IEEE80211_IOC_TSN</code></a></dt>
  <dd>Return whether or not Transitional Security Network (TSN) is enabled in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_TURBOP"><a class="permalink" href="#IEEE80211_IOC_TURBOP"><code class="Dv">IEEE80211_IOC_TURBOP</code></a></dt>
  <dd>Return whether Atheros Dynamic Turbo mode is enabled in
      <var class="Va">i_val</var>. Dynamic Turbo mode is a non-standard protocol
      extension available only on Atheros devices where channel width is
      dynamically changed between 20MHz and 40MHz. Note that enabling Dynamic
      Turbo mode support does not guarantee use; both client and access point
      must use Atheros devices and support must be enabled on both sides.</dd>
  <dt id="IEEE80211_IOC_TXPARAMS"><a class="permalink" href="#IEEE80211_IOC_TXPARAMS"><code class="Dv">IEEE80211_IOC_TXPARAMS</code></a></dt>
  <dd>Return transmit parameters in the buffer pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_TXPOWER"><a class="permalink" href="#IEEE80211_IOC_TXPOWER"><code class="Dv">IEEE80211_IOC_TXPOWER</code></a></dt>
  <dd>Return the transmit power limit in .5 dBm units in
      <var class="Va">i_val</var>. This value represents the effective maximum
      and is calculated according to the maximum power allowed by local
      regulations, any user-specified power limit, and the maximum power the
      device is capable of.</dd>
  <dt id="IEEE80211_IOC_TXPOWMAX"><a class="permalink" href="#IEEE80211_IOC_TXPOWMAX"><code class="Dv">IEEE80211_IOC_TXPOWMAX</code></a></dt>
  <dd>Return the user-specified maximum transmit power in .5 dBm units in
      <var class="Va">i_val</var>. The maximum setting is applied after any
      regulatory cap.</dd>
  <dt id="IEEE80211_IOC_WEP"><a class="permalink" href="#IEEE80211_IOC_WEP"><code class="Dv">IEEE80211_IOC_WEP</code></a></dt>
  <dd>Return the current WEP status in <var class="Va">i_val</var>. Valid values
      are: <code class="Dv">IEEE80211_WEP_ON</code> (enabled for all packets
      sent and received), <code class="Dv">IEEE80211_WEP_OFF</code> (disabled),
      and <code class="Dv">IEEE80211_WEP_MIXED</code> (enabled for transmit and
      receive but also willing to receive unencrypted frames). This request is
      deprecated; use <code class="Dv">IEEE80211_IOC_PRIVACY</code> and
      <code class="Dv">IEEE80211_IOC_UNENCRYPTED</code> instead.</dd>
  <dt id="IEEE80211_IOC_WEPKEY"><a class="permalink" href="#IEEE80211_IOC_WEPKEY"><code class="Dv">IEEE80211_IOC_WEPKEY</code></a></dt>
  <dd>Return the requested WEP key via <var class="Va">i_data</var>. The key
      number is specified in <var class="Va">i_val</var> and may be 0-3. If the
      device does not support returning the WEP key or the user is not root then
      the key may be returned as all zeros. This request is deprecated in favor
      of <code class="Dv">IEEE80211_IOC_WPAKEY</code>.</dd>
  <dt id="IEEE80211_IOC_WEPTXKEY"><a class="permalink" href="#IEEE80211_IOC_WEPTXKEY"><code class="Dv">IEEE80211_IOC_WEPTXKEY</code></a></dt>
  <dd>Return the number of the WEP key used for transmission in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME"><a class="permalink" href="#IEEE80211_IOC_WME"><code class="Dv">IEEE80211_IOC_WME</code></a></dt>
  <dd>Return whether 802.11e/WME/WMM support is enabled in
      <var class="Va">i_val</var>. This value will be non-zero when support is
      enabled and otherwise zero.</dd>
  <dt id="IEEE80211_IOC_WME_CWMIN"><a class="permalink" href="#IEEE80211_IOC_WME_CWMIN"><code class="Dv">IEEE80211_IOC_WME_CWMIN</code></a></dt>
  <dd>Return the WME CWmin setting (log2) for the specified Access Class (AC) in
      <var class="Va">i_val</var>. The AC is passed in through
      <var class="Va">i_len</var> together with an optional
      IEEE80211_WMEPARAM_BSS flag to indicate if the parameter for the BSS or
      the channel is desired. If WME is not supported then
      <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_WME_CWMAX"><a class="permalink" href="#IEEE80211_IOC_WME_CWMAX"><code class="Dv">IEEE80211_IOC_WME_CWMAX</code></a></dt>
  <dd>Return the WME CWmax setting (log2) for the specified Access Class (AC) in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_WME_CWMIN</code> above for more
    details.</dd>
  <dt id="IEEE80211_IOC_WME_AIFS"><a class="permalink" href="#IEEE80211_IOC_WME_AIFS"><code class="Dv">IEEE80211_IOC_WME_AIFS</code></a></dt>
  <dd>Return the WME AIFS setting for the specified Access Class (AC) in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_WME_CWMIN</code> above for more
    details.</dd>
  <dt id="IEEE80211_IOC_WME_TXOPLIMIT"><a class="permalink" href="#IEEE80211_IOC_WME_TXOPLIMIT"><code class="Dv">IEEE80211_IOC_WME_TXOPLIMIT</code></a></dt>
  <dd>Return the WME TxOpLimit (msec) for the specified Access Class (AC) in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_WME_CWMIN</code> above for more
    details.</dd>
  <dt id="IEEE80211_IOC_WME_ACM"><a class="permalink" href="#IEEE80211_IOC_WME_ACM"><code class="Dv">IEEE80211_IOC_WME_ACM</code></a></dt>
  <dd>Return the WME Admission Control Mechanism (ACM) setting for the specified
      Access Class (AC) in <var class="Va">i_val</var>. This value is meaningful
      only for the BSS (not channel). See
      <code class="Dv">IEEE80211_IOC_WME_CWMIN</code> above for more
    details.</dd>
  <dt id="IEEE80211_IOC_WME_ACKPOLICY"><a class="permalink" href="#IEEE80211_IOC_WME_ACKPOLICY"><code class="Dv">IEEE80211_IOC_WME_ACKPOLICY</code></a></dt>
  <dd>Return the WME ACK Policy setting for the specified Access Class (AC) in
      <var class="Va">i_val</var>. When this value is zero frames will be
      transmitted without waiting for an Acknowledgement. This value is
      meaningful only for the channel (not BSS). See
      <code class="Dv">IEEE80211_IOC_WME_CWMIN</code> above for more
    details.</dd>
  <dt id="IEEE80211_IOC_WPA"><a class="permalink" href="#IEEE80211_IOC_WPA"><code class="Dv">IEEE80211_IOC_WPA</code></a></dt>
  <dd>Return the WPA configuration in <var class="Va">i_val</var>. Valid values
      are 0 (WPA is not enabled), 1 (WPA1 is enabled), 2 (WPA2/802.11i is
      enabled), and 3 (WPA1 and WPA2/802.11i are both enabled).</dd>
  <dt id="IEEE80211_IOC_WPAIE"><a class="permalink" href="#IEEE80211_IOC_WPAIE"><code class="Dv">IEEE80211_IOC_WPAIE</code></a></dt>
  <dd>Return any WPA information element for an associated station via
      <var class="Va">i_data</var>. The request passed in through
      <var class="Va">i_data</var> identifies the MAC address of the desired
      station. If an RSN (802.11i) element is present it is returned; otherwise
      any WPA element is returned. Note this request is deprecated; use
      <code class="Dv">IEEE80211_IOC_WPAIE2</code> instead.</dd>
  <dt id="IEEE80211_IOC_WPAIE2"><a class="permalink" href="#IEEE80211_IOC_WPAIE2"><code class="Dv">IEEE80211_IOC_WPAIE2</code></a></dt>
  <dd>Return any WPA information elements for an associated station via
      <var class="Va">i_data</var>. The request passed in through
      <var class="Va">i_data</var> identifies the MAC address of the desired
      station. One or both of RSN (802.11i) and WPA elements may be
    returned.</dd>
  <dt id="IEEE80211_IOC_WPAKEY"><a class="permalink" href="#IEEE80211_IOC_WPAKEY"><code class="Dv">IEEE80211_IOC_WPAKEY</code></a></dt>
  <dd>Return the requested cryptographic key in the buffer pointed to by
      <var class="Va">i_data</var>. The key number is specified in
      <var class="Va">i_val</var> and may be 0-3. A key number of zero is used
      to retrieve a station's unicast cipher key when operating with WPA
      enabled. If the user is not root then the key data returned is all
    zeros.</dd>
  <dt id="IEEE80211_IOC_WPS"><a class="permalink" href="#IEEE80211_IOC_WPS"><code class="Dv">IEEE80211_IOC_WPS</code></a></dt>
  <dd>Return whether or not Wi-FI Protected Setup (WPS) is enabled in
      <var class="Va">i_val</var>.</dd>
</dl>
<p class="Pp">For <code class="Dv">SIOCS80211</code> the following values of
    <var class="Va">i_type</var> are valid. Note that changing a value on an
    interface that is running may cause the interface to be
    &#x2018;reset&#x2019;. Resets may be handled without altering the state if
    the parameter does not affect the MLME state (e.g. RTS threshold), but in
    some cases the interface may need to scan for a new network or clear state
    (including any associated stations); in that case the interface is said to
    be &#x2018;restarted&#x2019; (it is equivalent to marking the interface down
    and back up). The information below identifies whether changing a value
    affects the state of a running interface.</p>
<dl class="Bl-tag">
  <dt id="IEEE80211_IOC_ADDMAC"><a class="permalink" href="#IEEE80211_IOC_ADDMAC"><code class="Dv">IEEE80211_IOC_ADDMAC</code></a></dt>
  <dd>Add an entry to the MAC address Access Control List (ACL) database using
      the value pointed to by <var class="Va">i_data</var>. The
      <a class="Xr">wlan_acl(4)</a> module must be installed and enabled or
      <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_AMPDU~2"><a class="permalink" href="#IEEE80211_IOC_AMPDU~2"><code class="Dv">IEEE80211_IOC_AMPDU</code></a></dt>
  <dd>Set whether or not AMPDU is enabled for transmit and/or receive using the
      value in <var class="Va">i_val</var>. This request causes a running
      interface operating on an HT channel to be reset. See
      <code class="Dv">IEEE80211_IOC_AMPDU</code> above for details.</dd>
  <dt id="IEEE80211_IOC_AMPDU_DENSITY~2"><a class="permalink" href="#IEEE80211_IOC_AMPDU_DENSITY~2"><code class="Dv">IEEE80211_IOC_AMPDU_DENSITY</code></a></dt>
  <dd>Set the minimum density for bursting AMPDU frames to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_AMPDU_DENSITY</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_AMPDU_LIMIT~2"><a class="permalink" href="#IEEE80211_IOC_AMPDU_LIMIT~2"><code class="Dv">IEEE80211_IOC_AMPDU_LIMIT</code></a></dt>
  <dd>Set the limit on the size of AMPDU frames to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_AMPDU_LIMIT</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_AMSDU~2"><a class="permalink" href="#IEEE80211_IOC_AMSDU~2"><code class="Dv">IEEE80211_IOC_AMSDU</code></a></dt>
  <dd>Set whether or not AMSDU is enabled for transmit and/or receive using the
      value in <var class="Va">i_val</var>. This request causes a running
      interface operating on an HT channel to be reset. See
      <code class="Dv">IEEE80211_IOC_AMSDU</code> above for details.</dd>
  <dt id="IEEE80211_IOC_AMSDU_LIMIT~2"><a class="permalink" href="#IEEE80211_IOC_AMSDU_LIMIT~2"><code class="Dv">IEEE80211_IOC_AMSDU_LIMIT</code></a></dt>
  <dd>Set the limit on the size of AMSDU frames to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_AMSDU_LIMIT</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_APBRIDGE~2"><a class="permalink" href="#IEEE80211_IOC_APBRIDGE~2"><code class="Dv">IEEE80211_IOC_APBRIDGE</code></a></dt>
  <dd>Set whether AP bridging is enabled using the value in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_APBRIDGE</code> above for details.</dd>
  <dt id="IEEE80211_IOC_APPIE~2"><a class="permalink" href="#IEEE80211_IOC_APPIE~2"><code class="Dv">IEEE80211_IOC_APPIE</code></a></dt>
  <dd>Set an application information element using the data pointed to by
      <var class="Va">i_data</var>. This request causes a running interface to
      be restarted if the WPA information element is changed. See
      <code class="Dv">IEEE80211_IOC_APPIE</code> above for details.</dd>
  <dt id="IEEE80211_IOC_AUTHMODE~2"><a class="permalink" href="#IEEE80211_IOC_AUTHMODE~2"><code class="Dv">IEEE80211_IOC_AUTHMODE</code></a></dt>
  <dd>Set the current authentication mode using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_AUTHMODE</code> above for
      details. This request causes a running interface to be restarted.</dd>
  <dt id="IEEE80211_IOC_BEACON_INTERVAL~2"><a class="permalink" href="#IEEE80211_IOC_BEACON_INTERVAL~2"><code class="Dv">IEEE80211_IOC_BEACON_INTERVAL</code></a></dt>
  <dd>Set the time between Beacon frames (in TU) to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted.</dd>
  <dt id="IEEE80211_IOC_BGSCAN~2"><a class="permalink" href="#IEEE80211_IOC_BGSCAN~2"><code class="Dv">IEEE80211_IOC_BGSCAN</code></a></dt>
  <dd>Set whether background scanning is enabled using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_BGSCAN_IDLE~2"><a class="permalink" href="#IEEE80211_IOC_BGSCAN_IDLE~2"><code class="Dv">IEEE80211_IOC_BGSCAN_IDLE</code></a></dt>
  <dd>Set the minimum time (in msecs) a station must be idle before it will do a
      background scan to the value in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_BGSCAN_INTERVAL~2"><a class="permalink" href="#IEEE80211_IOC_BGSCAN_INTERVAL~2"><code class="Dv">IEEE80211_IOC_BGSCAN_INTERVAL</code></a></dt>
  <dd>Set the minimum time (seconds) between background scan operations to the
      value in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_BMISSTHRESHOLD~2"><a class="permalink" href="#IEEE80211_IOC_BMISSTHRESHOLD~2"><code class="Dv">IEEE80211_IOC_BMISSTHRESHOLD</code></a></dt>
  <dd>Set the number of consecutive missed Beacon frames before the system will
      attempt to roam to the value in <var class="Va">i_val</var>. This request
      causes a running interface to be reset.</dd>
  <dt id="IEEE80211_IOC_BSSID~2"><a class="permalink" href="#IEEE80211_IOC_BSSID~2"><code class="Dv">IEEE80211_IOC_BSSID</code></a></dt>
  <dd>Set the 802.11 MAC address for the desired BSS identifier according to
      <var class="Va">i_data</var>. This request causes a running interface to
      be restarted.</dd>
  <dt id="IEEE80211_IOC_BURST~2"><a class="permalink" href="#IEEE80211_IOC_BURST~2"><code class="Dv">IEEE80211_IOC_BURST</code></a></dt>
  <dd>Set whether or not packet bursting is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset.</dd>
  <dt id="IEEE80211_IOC_CHANNEL~2"><a class="permalink" href="#IEEE80211_IOC_CHANNEL~2"><code class="Dv">IEEE80211_IOC_CHANNEL</code></a></dt>
  <dd>Set the desired/current channel to the value given by
      <var class="Va">i_val</var>. This request causes a running interface to
      immediately change to the specified channel if possible; otherwise the
      interface will be restarted. Note this request is deprecated; use
      <code class="Dv">IEEE80211_IOC_CURCHAN</code> instead.</dd>
  <dt id="IEEE80211_IOC_CHANLIST~2"><a class="permalink" href="#IEEE80211_IOC_CHANLIST~2"><code class="Dv">IEEE80211_IOC_CHANLIST</code></a></dt>
  <dd>Set the list of available channels using the channel list pointed to by
      <var class="Va">i_data</var>. The channel list is a bit vector with bit N
      set to 1 if IEEE channel number N is available for use. The specified
      channel list is checked against the set of supported channels and any
      channels not supported are silently ignored. If the intersection of the
      channel list and the supported channels is empty
      <code class="Er">EINVAL</code> is returned. Note the current channel may
      be marked invalid after installing a new channel list. This request causes
      a running interface to be restarted.</dd>
  <dt id="IEEE80211_IOC_COUNTERMEASURES~2"><a class="permalink" href="#IEEE80211_IOC_COUNTERMEASURES~2"><code class="Dv">IEEE80211_IOC_COUNTERMEASURES</code></a></dt>
  <dd>Set whether TKIP Countermeasures are enabled using the value in
      <var class="Va">i_val</var>. This request can only be used when the
      authentication mode is set WPA; otherwise
      <code class="Er">EOPNOTSUPP</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_CURCHAN~2"><a class="permalink" href="#IEEE80211_IOC_CURCHAN~2"><code class="Dv">IEEE80211_IOC_CURCHAN</code></a></dt>
  <dd>Set the current channel using the information referenced by
      <var class="Va">i_data</var>. This request causes a running interface to
      immediately change to the specified channel if possible; otherwise the
      interface will be restarted.</dd>
  <dt id="IEEE80211_IOC_DELKEY"><a class="permalink" href="#IEEE80211_IOC_DELKEY"><code class="Dv">IEEE80211_IOC_DELKEY</code></a></dt>
  <dd>Delete the key specified by the information referenced by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_DELMAC"><a class="permalink" href="#IEEE80211_IOC_DELMAC"><code class="Dv">IEEE80211_IOC_DELMAC</code></a></dt>
  <dd>Remove an entry in the MAC address Access Control List (ACL) database
      using the value pointed to by <var class="Va">i_data</var>. The
      <a class="Xr">wlan_acl(4)</a> module must be installed and enabled or
      <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_DFS~2"><a class="permalink" href="#IEEE80211_IOC_DFS~2"><code class="Dv">IEEE80211_IOC_DFS</code></a></dt>
  <dd>Set whether or not Dynamic Frequency Selection (DFS) is enabled using the
      value in <var class="Va">i_val</var>. This request will fail with
      <code class="Er">EINVAL</code> if 802.11h support is not enabled. See
      <code class="Dv">IEEE80211_IOC_DFS</code> above for details.</dd>
  <dt id="IEEE80211_IOC_DOTD~2"><a class="permalink" href="#IEEE80211_IOC_DOTD~2"><code class="Dv">IEEE80211_IOC_DOTD</code></a></dt>
  <dd>Set whether or not 802.11d support is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_DOTD</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_DOTH~2"><a class="permalink" href="#IEEE80211_IOC_DOTH~2"><code class="Dv">IEEE80211_IOC_DOTH</code></a></dt>
  <dd>Return whether 802.11h support is enabled using the value in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_DOTH</code> above for details.</dd>
  <dt id="IEEE80211_IOC_DROPUNENCRYPTED~2"><a class="permalink" href="#IEEE80211_IOC_DROPUNENCRYPTED~2"><code class="Dv">IEEE80211_IOC_DROPUNENCRYPTED</code></a></dt>
  <dd>Set whether unencrypted packets transmit/received should be discarded
      using the value in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_DTIM_PERIOD~2"><a class="permalink" href="#IEEE80211_IOC_DTIM_PERIOD~2"><code class="Dv">IEEE80211_IOC_DTIM_PERIOD</code></a></dt>
  <dd>Set the period (in beacon intervals) between DTIM events to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted.</dd>
  <dt id="IEEE80211_IOC_DWDS~2"><a class="permalink" href="#IEEE80211_IOC_DWDS~2"><code class="Dv">IEEE80211_IOC_DWDS</code></a></dt>
  <dd>Set whether or not Dynamic WDS support is enabled using the value in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_DWDS</code> above for details.</dd>
  <dt id="IEEE80211_IOC_FF~2"><a class="permalink" href="#IEEE80211_IOC_FF~2"><code class="Dv">IEEE80211_IOC_FF</code></a></dt>
  <dd>Set whether Atheros fast-frames support is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_FF</code> above for
    details.</dd>
  <dt id="IEEE80211_IOC_FRAGTHRESHOLD~2"><a class="permalink" href="#IEEE80211_IOC_FRAGTHRESHOLD~2"><code class="Dv">IEEE80211_IOC_FRAGTHRESHOLD</code></a></dt>
  <dd>Set the threshold (in bytes) for enabling fragmentation frames using the
      value in <var class="Va">i_val</var>. This request causes a running
      interface to be reset. See
      <code class="Dv">IEEE80211_IOC_FRAGTHRESHOLD</code> above for
    details.</dd>
  <dt id="IEEE80211_IOC_GREENFIELD~2"><a class="permalink" href="#IEEE80211_IOC_GREENFIELD~2"><code class="Dv">IEEE80211_IOC_GREENFIELD</code></a></dt>
  <dd>Set whether or not Greenfield preamble use is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_GREENFIELD</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_HIDESSID~2"><a class="permalink" href="#IEEE80211_IOC_HIDESSID~2"><code class="Dv">IEEE80211_IOC_HIDESSID</code></a></dt>
  <dd>Set whether SSID hiding/cloaking is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_HIDESSID</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_HTCOMPAT~2"><a class="permalink" href="#IEEE80211_IOC_HTCOMPAT~2"><code class="Dv">IEEE80211_IOC_HTCOMPAT</code></a></dt>
  <dd>Set whether or not 802.11n compatibility support is enabled using the
      value in <var class="Va">i_val</var>. This request causes a running
      interface to be reset if operating on HT channel. See
      <code class="Dv">IEEE80211_IOC_HTCOMPAT</code> above for details.</dd>
  <dt id="IEEE80211_IOC_HTCONF~2"><a class="permalink" href="#IEEE80211_IOC_HTCONF~2"><code class="Dv">IEEE80211_IOC_HTCONF</code></a></dt>
  <dd>Set automatic promotion of HT channels using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_HTCONF</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_HTPROTMODE~2"><a class="permalink" href="#IEEE80211_IOC_HTPROTMODE~2"><code class="Dv">IEEE80211_IOC_HTPROTMODE</code></a></dt>
  <dd>Set the technique used to protect HT frames in a mixed 802.11n network
      using the value in <var class="Va">i_val</var>. This request causes a
      running interface to be reset. See
      <code class="Dv">IEEE80211_IOC_HTPROTMODE</code> above for details.</dd>
  <dt id="IEEE80211_IOC_HWMP_MAXHOPS~2"><a class="permalink" href="#IEEE80211_IOC_HWMP_MAXHOPS~2"><code class="Dv">IEEE80211_IOC_HWMP_MAXHOPS</code></a></dt>
  <dd>Set the maximum acceptable hop count in an HWMP path according to
      <var class="Va">i_val</var>. Values must be in the range [0-255].</dd>
  <dt id="IEEE80211_IOC_HWMP_ROOTMODE~2"><a class="permalink" href="#IEEE80211_IOC_HWMP_ROOTMODE~2"><code class="Dv">IEEE80211_IOC_HWMP_ROOTMODE</code></a></dt>
  <dd>Set the Mesh root mode operation according to <var class="Va">i_val</var>.
      Valid values are <code class="Dv">IEEE80211_HWMP_ROOTMODE_DISABLED</code>
      (root mode is disabled),
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_NORMAL</code> (send broadcast
      Path Request frames),
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_PROACTIVE</code> (send broadcast
      Path Request frames and force replies) and
      <code class="Dv">IEEE80211_HWMP_ROOTMODE_RANN</code> (send broadcast Root
      Announcement (RANN) frames).</dd>
  <dt id="IEEE80211_IOC_INACTIVITY~2"><a class="permalink" href="#IEEE80211_IOC_INACTIVITY~2"><code class="Dv">IEEE80211_IOC_INACTIVITY</code></a></dt>
  <dd>Set whether or not the system handles inactivity processing using the
      value in <var class="Va">i_val</var>. When inactivity processing is
      enabled the system will track stations that have not transmitted frames
      and periodically probe them to check if they are still present. Stations
      that are inactive and do not respond to probes are dropped.</dd>
  <dt id="IEEE80211_IOC_MACCMD~2"><a class="permalink" href="#IEEE80211_IOC_MACCMD~2"><code class="Dv">IEEE80211_IOC_MACCMD</code></a></dt>
  <dd>Change the state of the MAC address Access Control List (ACL) system.
      There are several requests supported:
      <code class="Dv">IEEE80211_MACCMD_POLICY_OPEN</code> (set the current
      policy to disable ACL use),
      <code class="Dv">IEEE80211_MACCMD_POLICY_ALLOW</code> (set the current
      policy to allow only addresses listed in the database),
      <code class="Dv">IEEE80211_MACCMD_POLICY_DENY</code> (set the current
      policy to deny addresses listed in the database),
      <code class="Dv">IEEE80211_MACCMD_POLICY_RADUS</code> (set the current
      policy to enable use of a RADIUS backend),
      <code class="Dv">IEEE80211_MACCMD_FLUSH</code> (flush all addresses from
      the database), and <code class="Dv">IEEE80211_MACCMD_DETACH</code> (detach
      the ACL subsystem, disabling it). The <a class="Xr">wlan_acl(4)</a> module
      must be installed or <code class="Er">EINVAL</code> will be returned.</dd>
  <dt id="IEEE80211_IOC_MESH_AP~2"><a class="permalink" href="#IEEE80211_IOC_MESH_AP~2"><code class="Dv">IEEE80211_IOC_MESH_AP</code></a></dt>
  <dd>Set whether or not Mesh AP support is enabled using
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_FWRD~2"><a class="permalink" href="#IEEE80211_IOC_MESH_FWRD~2"><code class="Dv">IEEE80211_IOC_MESH_FWRD</code></a></dt>
  <dd>Set whether or not packet forwarding support is enabled using
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_ID~2"><a class="permalink" href="#IEEE80211_IOC_MESH_ID~2"><code class="Dv">IEEE80211_IOC_MESH_ID</code></a></dt>
  <dd>Set the Mesh ID using the value pointed to by
      <var class="Va">i_data</var>. A Mesh ID can be up to
      <code class="Dv">IEEE80211_MESHID_LEN</code> bytes long.</dd>
  <dt id="IEEE80211_IOC_MESH_PP_METRIC~2"><a class="permalink" href="#IEEE80211_IOC_MESH_PP_METRIC~2"><code class="Dv">IEEE80211_IOC_MESH_PP_METRIC</code></a></dt>
  <dd>Set the link metric protocol using the value pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_PP_PATH~2"><a class="permalink" href="#IEEE80211_IOC_MESH_PP_PATH~2"><code class="Dv">IEEE80211_IOC_MESH_PP_PATH</code></a></dt>
  <dd>Set the path selection protocol using the value pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_MESH_RTCMD~2"><a class="permalink" href="#IEEE80211_IOC_MESH_RTCMD~2"><code class="Dv">IEEE80211_IOC_MESH_RTCMD</code></a></dt>
  <dd>Manipulate the state of the Mesh routing tables. Several requests are
      supported: <code class="Dv">IEEE80211_MESH_RTCMD_FLUSH</code> (flush the
      contents of the routing table),
      <code class="Dv">IEEE80211_MESH_RTCMD_ADD</code> (add an entry for the MAC
      address specified in <var class="Va">i_data</var> and start the Peer
      discovery process), and
      <code class="Dv">IEEE80211_MESH_RTCMD_DELETE</code> (delete the entry
      corresponding to the MAC address specified in <var class="Va">i_data
      ).</var></dd>
  <dt id="IEEE80211_IOC_MESH_TTL~2"><a class="permalink" href="#IEEE80211_IOC_MESH_TTL~2"><code class="Dv">IEEE80211_IOC_MESH_TTL</code></a></dt>
  <dd>Set the Mesh Time To Live (TTL) setting installed in packets transmitted
      by this mesh node using <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_MLME"><a class="permalink" href="#IEEE80211_IOC_MLME"><code class="Dv">IEEE80211_IOC_MLME</code></a></dt>
  <dd>Explicitly control the MLME state machine for a station using the MLME
      request pointed to by <var class="Va">i_data</var>. There are several MLME
      operations supported: <code class="Dv">IEEE80211_MLME_ASSOC</code>
      (request association to an access point),
      <code class="Dv">IEEE80211_MLME_DIASSOC</code> (diassociate the specified
      station), <code class="Dv">IEEE80211_MLME_DEAUTH</code> (deauthenticate
      the specified station), <code class="Dv">IEEE80211_MLME_AUHORIZE</code>
      (mark the specified station authorized to pass data frames),
      <code class="Dv">IEEE80211_MLME_UNAUTHORIZE</code> (revoke the specified
      station's ability to pass data frames), and
      <code class="Dv">IEEE80211_MLME_AUTH</code> (request authentication to an
      access point). Note when this facility is used for stations operating in
      infrastructure mode the roaming mode should be set to manual.</dd>
  <dt id="IEEE80211_IOC_POWERSAVE~2"><a class="permalink" href="#IEEE80211_IOC_POWERSAVE~2"><code class="Dv">IEEE80211_IOC_POWERSAVE</code></a></dt>
  <dd>Set the current powersaving mode to the value in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_POWERSAVE</code> above for valid values.
      This request causes a running interface to be reset.</dd>
  <dt id="IEEE80211_IOC_POWERSAVESLEEP~2"><a class="permalink" href="#IEEE80211_IOC_POWERSAVESLEEP~2"><code class="Dv">IEEE80211_IOC_POWERSAVESLEEP</code></a></dt>
  <dd>Set the powersave sleep time in TU to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset.</dd>
  <dt id="IEEE80211_IOC_PRIVACY~2"><a class="permalink" href="#IEEE80211_IOC_PRIVACY~2"><code class="Dv">IEEE80211_IOC_PRIVACY</code></a></dt>
  <dd>Set the current MLME setting for PRIVACY using the value in
      <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_PRIVACY</code> above for details.</dd>
  <dt id="IEEE80211_IOC_PROTMODE~2"><a class="permalink" href="#IEEE80211_IOC_PROTMODE~2"><code class="Dv">IEEE80211_IOC_PROTMODE</code></a></dt>
  <dd>Set the current 802.11g protection mode to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_PROTMODE</code> above for
      details. This request causes a running interface to be reset.</dd>
  <dt id="IEEE80211_IOC_PUREG~2"><a class="permalink" href="#IEEE80211_IOC_PUREG~2"><code class="Dv">IEEE80211_IOC_PUREG</code></a></dt>
  <dd>Set whether ``pure 11g'' mode is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_PUREG</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_PUREN~2"><a class="permalink" href="#IEEE80211_IOC_PUREN~2"><code class="Dv">IEEE80211_IOC_PUREN</code></a></dt>
  <dd>Set whether ``pure 11n'' mode is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted. See <code class="Dv">IEEE80211_IOC_PUREN</code> above for
      details.</dd>
  <dt id="IEEE80211_IOC_REGDOMAIN~2"><a class="permalink" href="#IEEE80211_IOC_REGDOMAIN~2"><code class="Dv">IEEE80211_IOC_REGDOMAIN</code></a></dt>
  <dd>Set the regulatory state using the data referenced by
      <var class="Va">i_data</var>. This request can only be issued when all
      interfaces cloned from the underlying physical device are marked down;
      otherwise <code class="Er">EBUSY</code> is returned. Note the new
      regulatory data may invalidate any desired channel.</dd>
  <dt id="IEEE80211_IOC_RIFS~2"><a class="permalink" href="#IEEE80211_IOC_RIFS~2"><code class="Dv">IEEE80211_IOC_RIFS</code></a></dt>
  <dd>Set whether or not Reduced InterFrame Spacing (RIFS) is enabled using the
      value in <var class="Va">i_val</var>. This setting is meaningful only when
      operating with 802.11n on an HT channel. This request causes a running
      interface to be reset.</dd>
  <dt id="IEEE80211_IOC_ROAM~2"><a class="permalink" href="#IEEE80211_IOC_ROAM~2"><code class="Dv">IEEE80211_IOC_ROAM</code></a></dt>
  <dd>Set station roaming parameters using the data pointed to by
      <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_ROAMING~2"><a class="permalink" href="#IEEE80211_IOC_ROAMING~2"><code class="Dv">IEEE80211_IOC_ROAMING</code></a></dt>
  <dd>Set the current roaming mode to the value in <var class="Va">i_val</var>.
      See <code class="Dv">IEEE80211_IOC_ROAMING</code> above for details.</dd>
  <dt id="IEEE80211_IOC_RTSTHRESHOLD~2"><a class="permalink" href="#IEEE80211_IOC_RTSTHRESHOLD~2"><code class="Dv">IEEE80211_IOC_RTSTHRESHOLD</code></a></dt>
  <dd>Set the threshold (in bytes) for enabling transmission of RTS frames to
      the value in <var class="Va">i_val</var>. This request causes a running
      interface to be reset. See
      <code class="Dv">IEEE80211_IOC_RTSTHRESHOLD</code> above for details.</dd>
  <dt id="IEEE80211_IOC_SCANVALID~2"><a class="permalink" href="#IEEE80211_IOC_SCANVALID~2"><code class="Dv">IEEE80211_IOC_SCANVALID</code></a></dt>
  <dd>Set the age (in seconds) that results from a scan operation will be
      considered valid. When scan results are no longer valid and they are
      needed (e.g. to roam) the system will initiate a scan operation to
      replenish the scan cache.</dd>
  <dt id="IEEE80211_IOC_SCAN_REQ"><a class="permalink" href="#IEEE80211_IOC_SCAN_REQ"><code class="Dv">IEEE80211_IOC_SCAN_REQ</code></a></dt>
  <dd>Request a scan operation using the parameters pointed to by
      <var class="Va">i_val</var>. The underlying device must be running or
      <code class="Er">ENXIO</code> will be returned. Values for
      <var class="Va">sr_duration</var>, <var class="Va">sr_mindwell</var>, and
      <var class="Va">sr_maxdwell</var> shorter than 1 clock tick are rounded up
      to a tick. If more SSID's are supplied than the system is capable of
      handling the extra ones are silently ignored. If a scan operation is
      already in progress the request will be (silently) ignored.</dd>
  <dt id="IEEE80211_IOC_SCAN_CANCEL"><a class="permalink" href="#IEEE80211_IOC_SCAN_CANCEL"><code class="Dv">IEEE80211_IOC_SCAN_CANCEL</code></a></dt>
  <dd>Cancel any pending/active scan operation.</dd>
  <dt id="IEEE80211_IOC_SHORTGI~2"><a class="permalink" href="#IEEE80211_IOC_SHORTGI~2"><code class="Dv">IEEE80211_IOC_SHORTGI</code></a></dt>
  <dd>Set whether or not Short Guard Interval (SGI) is enabled using the value
      in <var class="Va">i_val</var>. Note SGI is only used when operating on an
      HT (802.11n) channel. This request causes a running interface to be
    reset.</dd>
  <dt id="IEEE80211_IOC_SMPS~2"><a class="permalink" href="#IEEE80211_IOC_SMPS~2"><code class="Dv">IEEE80211_IOC_SMPS</code></a></dt>
  <dd>Set the Spatial Multiplexing Power Save (SMPS) setting to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset. See <code class="Dv">IEEE80211_IOC_SMPS</code> above for
    details.</dd>
  <dt id="IEEE80211_IOC_SSID~2"><a class="permalink" href="#IEEE80211_IOC_SSID~2"><code class="Dv">IEEE80211_IOC_SSID</code></a></dt>
  <dd>Set the desired SSID using the value pointed to by
      <var class="Va">i_data</var>. The string may be at most IEEE80211_NWID_LEN
      bytes. This request causes a running interface to be restarted.</dd>
  <dt id="IEEE80211_IOC_STA_STATS~2"><a class="permalink" href="#IEEE80211_IOC_STA_STATS~2"><code class="Dv">IEEE80211_IOC_STA_STATS</code></a></dt>
  <dd>Clear accumulated statistics for the specified station.</dd>
  <dt id="IEEE80211_IOC_STA_VLAN~2"><a class="permalink" href="#IEEE80211_IOC_STA_VLAN~2"><code class="Dv">IEEE80211_IOC_STA_VLAN</code></a></dt>
  <dd>Set the VLAN tag for the specified station using the information pointed
      to by <var class="Va">i_data</var>.</dd>
  <dt id="IEEE80211_IOC_TDMA_BINTERVAL~2"><a class="permalink" href="#IEEE80211_IOC_TDMA_BINTERVAL~2"><code class="Dv">IEEE80211_IOC_TDMA_BINTERVAL</code></a></dt>
  <dd>Set the interval between Beacon frames to the value in
      <var class="Va">i_val</var>. Values must be positive. This request causes
      a running interface to be reset.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOT~2"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOT~2"><code class="Dv">IEEE80211_IOC_TDMA_SLOT</code></a></dt>
  <dd>Set the current TDMA slot to the value in <var class="Va">i_val</var>.
      Values must be in the range [0-slotcnt]. Slot 0 identifies the master in
      the TDMA network; if it running it will immediately start sending Beacon
      frames.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOTCNT~2"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOTCNT~2"><code class="Dv">IEEE80211_IOC_TDMA_SLOTCNT</code></a></dt>
  <dd>Set the number of slots in the TDMA network to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset.</dd>
  <dt id="IEEE80211_IOC_TDMA_SLOTLEN~2"><a class="permalink" href="#IEEE80211_IOC_TDMA_SLOTLEN~2"><code class="Dv">IEEE80211_IOC_TDMA_SLOTLEN</code></a></dt>
  <dd>Set the length of the TDMA slot assigned to each station in the network to
      the value in <var class="Va">i_val</var>. Slot lengths must be in the
      range 200 usecs to 1024 milliseconds (though values outside the range
      1-200ms are unlikely to work well). This request causes a running
      interface to be reset.</dd>
  <dt id="IEEE80211_IOC_TSN~2"><a class="permalink" href="#IEEE80211_IOC_TSN~2"><code class="Dv">IEEE80211_IOC_TSN</code></a></dt>
  <dd>Set whether or not Transitional Security Network (TSN) is enabled using
      the value in <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_TURBOP~2"><a class="permalink" href="#IEEE80211_IOC_TURBOP~2"><code class="Dv">IEEE80211_IOC_TURBOP</code></a></dt>
  <dd>Set whether Atheros Dynamic Turbo mode is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      restarted.</dd>
  <dt id="IEEE80211_IOC_TXPARAMS~2"><a class="permalink" href="#IEEE80211_IOC_TXPARAMS~2"><code class="Dv">IEEE80211_IOC_TXPARAMS</code></a></dt>
  <dd>Set transmit parameters using the data pointed to be
      <var class="Va">i_data</var>. This request causes a running interface to
      be restarted.</dd>
  <dt id="IEEE80211_IOC_TXPOWER~2"><a class="permalink" href="#IEEE80211_IOC_TXPOWER~2"><code class="Dv">IEEE80211_IOC_TXPOWER</code></a></dt>
  <dd>Set the maximum transmit power limit in .5 dBm units to the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset.</dd>
  <dt id="IEEE80211_IOC_WEP~2"><a class="permalink" href="#IEEE80211_IOC_WEP~2"><code class="Dv">IEEE80211_IOC_WEP</code></a></dt>
  <dd>Set the current WEP mode to the value in <var class="Va">i_val</var>. See
      <code class="Dv">IEEE80211_IOC_WEP</code> above for valid values. This
      request causes a running interface to be restarted. Note this request is
      deprecated; use <code class="Dv">IEEE80211_IOC_PRIVACY</code> and
      <code class="Dv">IEEE80211_IOC_DROPUNENCRYPTED</code> instead.</dd>
  <dt id="IEEE80211_IOC_WEPKEY~2"><a class="permalink" href="#IEEE80211_IOC_WEPKEY~2"><code class="Dv">IEEE80211_IOC_WEPKEY</code></a></dt>
  <dd>Set the WEP key indicated by <var class="Va">i_val</var> using the data
      pointed to by <var class="Va">i_data</var>. Note this request is
      deprecated; use <code class="Dv">IEEE80211_IOC_WPAKEY</code> instead.</dd>
  <dt id="IEEE80211_IOC_WEPTXKEY~2"><a class="permalink" href="#IEEE80211_IOC_WEPTXKEY~2"><code class="Dv">IEEE80211_IOC_WEPTXKEY</code></a></dt>
  <dd>Set the default transmit key used for transmission to the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME~2"><a class="permalink" href="#IEEE80211_IOC_WME~2"><code class="Dv">IEEE80211_IOC_WME</code></a></dt>
  <dd>Set whether or not WME/WMM support is enabled using the value in
      <var class="Va">i_val</var>. This request causes a running interface to be
      reset.</dd>
  <dt id="IEEE80211_IOC_WME_ACKPOLICY~2"><a class="permalink" href="#IEEE80211_IOC_WME_ACKPOLICY~2"><code class="Dv">IEEE80211_IOC_WME_ACKPOLICY</code></a></dt>
  <dd>Set the WME ACK Policy for the Access Class (AC) specified in
      <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME_ACM~2"><a class="permalink" href="#IEEE80211_IOC_WME_ACM~2"><code class="Dv">IEEE80211_IOC_WME_ACM</code></a></dt>
  <dd>Set the WME Admission Control Mechanism for the Access Class (AC)
      specified in <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME_AIFS~2"><a class="permalink" href="#IEEE80211_IOC_WME_AIFS~2"><code class="Dv">IEEE80211_IOC_WME_AIFS</code></a></dt>
  <dd>Set the WME AIFS parameter for the Access Class (AC) specified in
      <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME_CWMAX~2"><a class="permalink" href="#IEEE80211_IOC_WME_CWMAX~2"><code class="Dv">IEEE80211_IOC_WME_CWMAX</code></a></dt>
  <dd>Set the WME CWmax parameter for the Access Class (AC) specified in
      <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME_CWMIN~2"><a class="permalink" href="#IEEE80211_IOC_WME_CWMIN~2"><code class="Dv">IEEE80211_IOC_WME_CWMIN</code></a></dt>
  <dd>Set the WME CWmin parameter for the Access Class (AC) specified in
      <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WME_TXOPLIMIT~2"><a class="permalink" href="#IEEE80211_IOC_WME_TXOPLIMIT~2"><code class="Dv">IEEE80211_IOC_WME_TXOPLIMIT</code></a></dt>
  <dd>Set the WME TxOpLimit parameter for the Access Class (AC) specified in
      <var class="Va">i_len</var> using the value in
      <var class="Va">i_val</var>.</dd>
  <dt id="IEEE80211_IOC_WPA~2"><a class="permalink" href="#IEEE80211_IOC_WPA~2"><code class="Dv">IEEE80211_IOC_WPA</code></a></dt>
  <dd>Set the WPA configuration using the value in <var class="Va">i_val</var>.
      This request causes a running interface to be reset. See
      <code class="Dv">IEEE80211_IOC_WPA</code> above for details.</dd>
  <dt id="IEEE80211_IOC_WPAKEY~2"><a class="permalink" href="#IEEE80211_IOC_WPAKEY~2"><code class="Dv">IEEE80211_IOC_WPAKEY</code></a></dt>
  <dd>Set the requested cryptographic key using data in the buffer pointed to by
      <var class="Va">i_data</var>. See
      <code class="Dv">IEEE80211_IOC_WPAKEY</code> for details.</dd>
  <dt id="IEEE80211_IOC_WPS~2"><a class="permalink" href="#IEEE80211_IOC_WPS~2"><code class="Dv">IEEE80211_IOC_WPS</code></a></dt>
  <dd>Set whether or not Wi-FI Protected Setup (WPS) is enabled using the value
      in <var class="Va">i_val</var>.</dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
  ALSO</a></h1>
<p class="Pp"><a class="Xr">ioctl(2)</a>, <a class="Xr">wlan(4)</a>,
    <a class="Xr">wlan_acl(4)</a>, <a class="Xr">wlan_xauth(4)</a>,
    <a class="Xr">hostapd(8)</a>, <a class="Xr">ifconfig(8)</a>,
    <a class="Xr">wpa_supplicant(8)</a></p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">August 7, 2020</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>