1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>struct ieee80211_channel</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The 802.11 subsystems &#8211; for kernel developers"><link rel="up" href="bk01ch01.html" title="Chapter&#160;1.&#160;Device registration"><link rel="prev" href="API-enum-ieee80211-channel-flags.html" title="enum ieee80211_channel_flags"><link rel="next" href="API-enum-ieee80211-rate-flags.html" title="enum ieee80211_rate_flags"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">struct ieee80211_channel</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-enum-ieee80211-channel-flags.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;1.&#160;Device registration</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-enum-ieee80211-rate-flags.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-ieee80211-channel"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct ieee80211_channel &#8212; 
2  channel definition
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct ieee80211_channel {
5  enum ieee80211_band band;
6  u16 center_freq;
7  u16 hw_value;
8  u32 flags;
9  int max_antenna_gain;
10  int max_power;
11  int max_reg_power;
12  bool beacon_found;
13  u32 orig_flags;
14  int orig_mag;
15  int orig_mpwr;
16  enum nl80211_dfs_state dfs_state;
17  unsigned long dfs_state_entered;
18  unsigned int dfs_cac_ms;
19};  </pre></div><div class="refsect1"><a name="idp1109212356"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">band</span></dt><dd><p>
20band this channel belongs to.
21      </p></dd><dt><span class="term">center_freq</span></dt><dd><p>
22center frequency in MHz
23      </p></dd><dt><span class="term">hw_value</span></dt><dd><p>
24hardware-specific value for the channel
25      </p></dd><dt><span class="term">flags</span></dt><dd><p>
26channel flags from <span class="structname">enum</span> ieee80211_channel_flags.
27      </p></dd><dt><span class="term">max_antenna_gain</span></dt><dd><p>
28maximum antenna gain in dBi
29      </p></dd><dt><span class="term">max_power</span></dt><dd><p>
30maximum transmission power (in dBm)
31      </p></dd><dt><span class="term">max_reg_power</span></dt><dd><p>
32maximum regulatory transmission power (in dBm)
33      </p></dd><dt><span class="term">beacon_found</span></dt><dd><p>
34helper to regulatory code to indicate when a beacon
35has been found on this channel. Use <code class="function">regulatory_hint_found_beacon</code>
36to enable this, this is useful only on 5 GHz band.
37      </p></dd><dt><span class="term">orig_flags</span></dt><dd><p>
38channel flags at registration time, used by regulatory
39code to support devices with additional restrictions
40      </p></dd><dt><span class="term">orig_mag</span></dt><dd><p>
41internal use
42      </p></dd><dt><span class="term">orig_mpwr</span></dt><dd><p>
43internal use
44      </p></dd><dt><span class="term">dfs_state</span></dt><dd><p>
45current state of this channel. Only relevant if radar is required
46on this channel.
47      </p></dd><dt><span class="term">dfs_state_entered</span></dt><dd><p>
48timestamp (jiffies) when the dfs state was entered.
49      </p></dd><dt><span class="term">dfs_cac_ms</span></dt><dd><p>
50DFS CAC time in milliseconds, this is valid for DFS channels.
51      </p></dd></dl></div></div><div class="refsect1"><a name="idp1109223460"></a><h2>Description</h2><p>
52   </p><p>
53
54   This structure describes a single channel for use
55   with cfg80211.
56</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-enum-ieee80211-channel-flags.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="bk01ch01.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-enum-ieee80211-rate-flags.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">enum ieee80211_channel_flags</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">enum ieee80211_rate_flags</span></td></tr></table></div></body></html>
57