Date: Sun, 27 Oct 2013 11:11:07 +0100 From: Stefan Farfeleder <stefanf@FreeBSD.org> To: Adrian Chadd <adrian@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r257133 - head/sys/dev/iwn Message-ID: <20131027101106.GA2843@mole.fafoe.narf.at> In-Reply-To: <201310251944.r9PJis6q004419@svn.freebsd.org> References: <201310251944.r9PJis6q004419@svn.freebsd.org>
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On Fri, Oct 25, 2013 at 07:44:54PM +0000, Adrian Chadd wrote: > Author: adrian > Date: Fri Oct 25 19:44:53 2013 > New Revision: 257133 > URL: http://svnweb.freebsd.org/changeset/base/257133 > > Log: > Temporarily disable multi-rate retry (link quality) and eliminate rate > index lookups. > > * My recent(ish) change to iwn(4) and the net80211 rate control API to > support 11n rates broke the link quality table use. So, until I or > someone else decides to fix it, let's just disable it for now. > > * Teach iwn_tx_data_raw() to use the iwn_rate_to_plcp() function. > > * Eliminate two uses of the net80211 rate index lookup functions - they > are only for legacy rates and they're not needed here. > > This fixes some invalid looking rate control TX issues that showed up > on my 4965 but it doesn't fix the two TX hangs I've noticed. Those look > like DMA related issues. > > Tested: > > * 4965, STA mode > * 5100, STA mode Hi Adrian, this change completely broke iwn for me. It's a iwn0: <Intel WiFi Link 5100> mem 0xf1ffe000-0xf1ffffff irq 17 at device 0.0 on pci12 built-in device in a Dell Precision m4400. With this change, wpa_supplicant cannot associate any longer. In the logs I see every few seconds Oct 27 10:57:37 mole wpa_supplicant[2256]: wlan0: Trying to associate with xx:xx:xx:xx:xx:xx (SSID='xx' freq=2427 MHz) Oct 27 10:57:47 mole wpa_supplicant[2256]: wlan0: Authentication with xx:xx:xx:xx:xx:xx timed out. Oct 27 10:57:47 mole wpa_supplicant[2256]: wlan0: CTRL-EVENT-DISCONNECTED bssid=xx:xx:xx:xx:xx:xx reason=3 locally_generated=1 If I revert just this revision based on a r257155 checkout, it works again. Stefan
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