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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>struct ieee80211_hw</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The mac80211 subsystem for kernel developers" /><link rel="up" href="ch01.html" title="Chapter 1. Basic hardware handling" /><link rel="prev" href="ch01.html" title="Chapter 1. Basic hardware handling" /><link rel="next" href="re02.html" title="enum ieee80211_hw_flags" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>struct ieee80211_hw</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch01.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Basic hardware handling</th><td width="20%" align="right"> <a accesskey="n" href="re02.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="struct ieee80211_hw"><a id="API-struct-ieee80211-hw"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct ieee80211_hw —
hardware information and state
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><pre class="programlisting">
struct ieee80211_hw {
struct ieee80211_conf conf;
struct wiphy * wiphy;
const char * rate_control_algorithm;
void * priv;
u32 flags;
unsigned int extra_tx_headroom;
int channel_change_time;
int vif_data_size;
int sta_data_size;
u16 queues;
u16 max_listen_interval;
s8 max_signal;
u8 max_rates;
u8 max_rate_tries;
}; </pre></div><div class="refsect1" title="Members"><a id="id2656915"></a><h2>Members</h2><div class="variablelist"><dl><dt><span class="term">conf</span></dt><dd><p>
<span class="structname">struct ieee80211_conf</span>, device configuration, don't use.
</p></dd><dt><span class="term">wiphy</span></dt><dd><p>
This points to the <span class="structname">struct wiphy</span> allocated for this
802.11 PHY. You must fill in the <em class="parameter"><code>perm_addr</code></em> and <em class="parameter"><code>dev</code></em>
members of this structure using <code class="function">SET_IEEE80211_DEV</code>
and <code class="function">SET_IEEE80211_PERM_ADDR</code>. Additionally, all supported
bands (with channels, bitrates) are registered here.
</p></dd><dt><span class="term">rate_control_algorithm</span></dt><dd><p>
rate control algorithm for this hardware.
If unset (NULL), the default algorithm will be used. Must be
set before calling <code class="function">ieee80211_register_hw</code>.
</p></dd><dt><span class="term">priv</span></dt><dd><p>
pointer to private area that was allocated for driver use
along with this structure.
</p></dd><dt><span class="term">flags</span></dt><dd><p>
hardware flags, see <span class="structname">enum</span> ieee80211_hw_flags.
</p></dd><dt><span class="term">extra_tx_headroom</span></dt><dd><p>
headroom to reserve in each transmit skb
for use by the driver (e.g. for transmit headers.)
</p></dd><dt><span class="term">channel_change_time</span></dt><dd><p>
time (in microseconds) it takes to change channels.
</p></dd><dt><span class="term">vif_data_size</span></dt><dd><p>
size (in bytes) of the drv_priv data area
within <span class="structname">struct ieee80211_vif</span>.
</p></dd><dt><span class="term">sta_data_size</span></dt><dd><p>
size (in bytes) of the drv_priv data area
within <span class="structname">struct ieee80211_sta</span>.
</p></dd><dt><span class="term">queues</span></dt><dd><p>
number of available hardware transmit queues for
data packets. WMM/QoS requires at least four, these
queues need to have configurable access parameters.
</p></dd><dt><span class="term">max_listen_interval</span></dt><dd><p>
max listen interval in units of beacon interval
that HW supports
</p></dd><dt><span class="term">max_signal</span></dt><dd><p>
Maximum value for signal (rssi) in RX information, used
only when <em class="parameter"><code>IEEE80211_HW_SIGNAL_UNSPEC</code></em> or <em class="parameter"><code>IEEE80211_HW_SIGNAL_DB</code></em>
</p></dd><dt><span class="term">max_rates</span></dt><dd><p>
maximum number of alternate rate retry stages
</p></dd><dt><span class="term">max_rate_tries</span></dt><dd><p>
maximum number of tries for each stage
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2661484"></a><h2>Description</h2><p>
</p><p>
This structure contains the configuration and hardware
information for an 802.11 PHY.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch01.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch01.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 1. Basic hardware handling </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>enum ieee80211_hw_flags</span></td></tr></table></div></body></html>
