Hi, 2013/11/12 Kamran Nishat <kamran.nis...@gmail.com>: > how can we set our APs into 5/10Mhz channel? If I do it using a debugfs > entry in ath9k how can I communicate it to mac80211? can I ath9k and HW > channel width without telling mac80211 and above layers? > Please give us some hints at least > > first of all, it should be noted, that there are two, khm, versions of 5/10 channels control: Simon's and OpenWRT. ath9k themself has 5/10 channels support for a long time.
Simon's patches had been merged to the wireless-next tree in the middle of august 2013. This patches add ability to handle 5/10MHz channels to mac80211/cfg80211/nl80211. But there are no support for these options in user level utilities (I mean iw utility [1]). I am not familar with this realization, by it seems that you should write 5/10 MHz handlers for iw by yourself. OpenWRT developers act more simply: they add new entry to the debugfs, named "chanbw" [2]. When you write to this file, ath9k driver reconfigure WNIC chip to work with appropriate channel width, but mac80211 and cfg80211 still think that they are work with 20MHz channel. So, you have two ways: update your wireless subsystem, write few handlers for iw and you can control channel bandwidth in most common manner or you could use OpenWRT with it's hackish realization. 1. http://wireless.kernel.org/en/users/Documentation/iw 2. https://dev.openwrt.org/browser/trunk/package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch?rev=38354 > On Fri, Nov 8, 2013 at 3:46 PM, Sergey Ryazanov <ryazanov....@gmail.com> > wrote: >> >> Hi, >> >> 2013/11/8 Kamran Nishat <kamran.nis...@gmail.com>: >> > Hi, >> > I want to set 5 and 10 MHz channels. My AP has Atheros AR9160 and my >> > nodes >> > have AR5416. Are they supported for my cards. Can I go to higher MCS >> > like >> > 12-13 on a 5MHz channel? >> > >> Current mainstream kernel don't support HT MCS at all on 5MHz & 10MHz >> channels. You could try to use OpenWRT firmware, which is based on old >> wireless-next tree snapshot and support all MCS. >> >> -- >> BR, >> Sergey > > -- BR, Sergey _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
