CINXE.COM
LKML: Johannes Berg: Re: wireless: recap of current issues (configuration)
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>LKML: Johannes Berg: Re: wireless: recap of current issues (configuration)</title><link href="/css/message.css" rel="stylesheet" type="text/css" /><link href="/css/wrap.css" rel="alternate stylesheet" type="text/css" title="wrap" /><link href="/css/nowrap.css" rel="stylesheet" type="text/css" title="nowrap" /><link href="/favicon.ico" rel="shortcut icon" /><script src="/js/simple-calendar.js" type="text/javascript"></script><script src="/js/styleswitcher.js" type="text/javascript"></script><link rel="alternate" type="application/rss+xml" title="lkml.org : last 100 messages" href="/rss.php" /><link rel="alternate" type="application/rss+xml" title="lkml.org : last messages by Johannes Berg" href="/groupie.php?aid=29554" /><!--Matomo--><script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(["setDoNotTrack", true]); _paq.push(["disableCookies"]); _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function() { var u="//m.lkml.org/"; _paq.push(['setTrackerUrl', u+'matomo.php']); _paq.push(['setSiteId', '1']); var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); })(); </script><!--End Matomo Code--></head><body onload="es.jasper.simpleCalendar.init();" itemscope="itemscope" itemtype="http://schema.org/BlogPosting"><table border="0" cellpadding="0" cellspacing="0"><tr><td width="180" align="center"><a href="/"><img style="border:0;width:135px;height:32px" src="/images/toprowlk.gif" alt="lkml.org" /></a></td><td width="32">聽</td><td class="nb"><div><a class="nb" href="/lkml"> [lkml]</a> 聽 <a class="nb" href="/lkml/2006"> [2006]</a> 聽 <a class="nb" href="/lkml/2006/1"> [Jan]</a> 聽 <a class="nb" href="/lkml/2006/1/14"> [14]</a> 聽 <a class="nb" href="/lkml/last100"> [last100]</a> 聽 <a href="/rss.php"><img src="/images/rss-or.gif" border="0" alt="RSS Feed" /></a></div><div>Views: <a href="#" class="nowrap" onclick="setActiveStyleSheet('wrap');return false;">[wrap]</a><a href="#" class="wrap" onclick="setActiveStyleSheet('nowrap');return false;">[no wrap]</a> 聽 <a class="nb" href="/lkml/mheaders/2006/1/14/39" onclick="this.href='/lkml/headers'+'/2006/1/14/39';">[headers]</a>聽 <a href="/lkml/bounce/2006/1/14/39">[forward]</a>聽 </div></td><td width="32">聽</td></tr><tr><td valign="top"><div class="es-jasper-simpleCalendar" baseurl="/lkml/"></div><div class="threadlist">Messages in this thread</div><ul class="threadlist"><li class="root"><a href="/lkml/2006/1/13/344">First message in thread</a></li><li><a href="/lkml/2006/1/13/381">Johannes Berg</a><ul><li><a href="/lkml/2006/1/13/456">Stuffed Crust</a><ul><li class="origin"><a href="/lkml/2006/1/14/105">Johannes Berg</a><ul><li><a href="/lkml/2006/1/14/105">Krzysztof Halasa</a></li></ul></li><li><a href="/lkml/2006/1/14/251">Jeff Garzik</a><ul><li><a href="/lkml/2006/1/15/58">Stuffed Crust</a><ul><li><a href="/lkml/2006/1/15/114">Sam Leffler</a></li><li><a href="/lkml/2006/1/15/146">Samuel Ortiz</a></li></ul></li></ul></li></ul></li><li><a href="/lkml/2006/1/15/43">Stefan Rompf</a><ul><li><a href="/lkml/2006/1/15/65">"Johannes Berg"</a><ul><li><a href="/lkml/2006/1/15/86">Stefan Rompf</a><ul><li><a href="/lkml/2006/1/15/117">Sam Leffler</a></li></ul></li></ul></li><li><a href="/lkml/2006/1/15/110">Sam Leffler</a><ul><li><a href="/lkml/2006/1/15/181">Mike Kershaw</a></li></ul></li></ul></li><li><a href="/lkml/2006/1/16/125">Jiri Benc</a><ul><li><a href="/lkml/2006/1/16/130">Johannes Berg</a><ul><li><a href="/lkml/2006/1/16/203">Stuffed Crust</a><ul><li><a href="/lkml/2006/1/16/206">Sam Leffler</a></li></ul></li></ul></li></ul></li></ul></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">Subject</td><td class="rp" itemprop="name">Re: wireless: recap of current issues (configuration)</td></tr><tr><td class="lp">From</td><td class="rp" itemprop="author">Johannes Berg <></td></tr><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Sat, 14 Jan 2006 10:28:09 +0100</td></tr></table></td><td></td></tr></table><pre itemprop="articleBody">On Fri, 2006-01-13 at 20:17 -0500, Stuffed Crust wrote:<br /><br />> If you're talking about the former.. things get quite complicated, but <br />> that could be handled by having two WiPHY devices registered.<br /><br />The former; and yes, I thought about that too -- having a driver that<br />shows two physical WiPHY devices as a single logical WiPHY device and<br />distributes virtual devices among them...<br /><br />> As for the latter, when you factor in the needs of 802.11d and its<br />> dependents (802.11j, 802.11k, and others) the stack is going to need to<br />> be aware of the available channel sets; both in the sense of hardware<br />> support and also the various regulatory requirements. <br />> <br />> The hardware knows what frequencies it supports. Unfortunately this has <br />> to be a somewhat dynamic thing, as this is often not queryable until the <br />> device firmware is up and running. <br />> <br />> This can be accomplished by passing a static table to the <br />> register_wiphy_device() call (or perhaps via a struct wiphy_dev <br />> parameter) or through a more explicit, dynamic interface like:<br />> <br />> wiphy_register_supported_frequency(hw, 2412). <br /><br />Yeah, this is about what I thought of -- and it makes me wonder if the<br />stack really should be aware of the channelization, or if the WiPHY<br />driver might better just handle it itself.<br /><br />johannes<br />[unhandled content-type:application/pgp-signature]</pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2006-01-14 10:31 聽聽 [from the cache]<br />漏2003-2020 <a href="http://blog.jasper.es/"><span itemprop="editor">Jasper Spaans</span></a>|hosted at <a href="https://www.digitalocean.com/?refcode=9a8e99d24cf9">Digital Ocean</a> and my Meterkast|<a href="http://blog.jasper.es/categories.html#lkml-ref">Read the blog</a></td><td>聽</td></tr></table><script language="javascript" src="/js/styleswitcher.js" type="text/javascript"></script></body></html>