What about DFS in WDS / Mesh / IBSS mode if DFS is only implemented in hostapd? Will an instance of hostapd be required for all these modes, too? Thanks -----Original Message----- From: linux-wireless-owner@xxxxxxxxxxxxxxx [mailto:linux-wireless-owner@xxxxxxxxxxxxxxx] On Behalf Of Zefir Kurtisi Sent: Wednesday, February 09, 2011 7:02 AM To: linux-wireless@xxxxxxxxxxxxxxx Cc: Zefir Kurtisi Subject: [RFC] DFS userspace handler Hello DFS folks, this is a patch series to prove the concept of DFS handling done in userspace. It moves the radar pattern detector introduced in [1] and documented in [2] from mac80211 up to hostapd. The basic concept is: 1) pattern detection * pulse events detected by HW are passed to hostapd * hostapd performs per-wiphy DFS pattern matching 2) channel handling: on radar detection hostapd * updates channel state (NOL handling) * switches to new operating channel with TX disabled (on all wiphys) * after CAC period enables TX on that channel The proposed patches provide part 1) of the concept. The nl80211 interface is extended with functions to pass DFS pulse events to hostapd. Testing as described in [2] results in identical output, indicating that both approaches (mac80211 and hostapd based) are equivalent from functional point of view. The testing was done with * OpenWRT r25417 * Atheros AR9280 Rev:2 * DFS radars generated with R&S vector signal generator We at our company would prefer this approach over the mac80211 based one as soon as we see that part 2) can be implemented as proposed. Cheers Zefir [1] http://article.gmane.org/gmane.linux.kernel.wireless.general/61868 [2] http://linuxwireless.org/en/developers/DFS/DetectorDesignNt --- -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
