From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-lb0-f179.google.com ([209.85.217.179]:35080 "EHLO mail-lb0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754767AbaHYUiR (ORCPT ); Mon, 25 Aug 2014 16:38:17 -0400 Received: by mail-lb0-f179.google.com with SMTP id v6so273982lbi.38 for ; Mon, 25 Aug 2014 13:38:16 -0700 (PDT) From: Christian Lamparter To: Emmanuel Grumbach Cc: Luca Coelho , linux-wireless , "ilw@linux.intel.com" , Emmanuel Grumbach , "Berg, Johannes" Subject: Re: Iwlwifi 3160 AC (firmware?) clashes with CONFIG_IWLWIFI_BCAST_FILTERING Date: Mon, 25 Aug 2014 22:38:12 +0200 Message-ID: <2051772.0goyH0a5WI@debian64> (sfid-20140825_223821_107429_1E999AC4) In-Reply-To: References: <6715079.xd2j4mnUMo@debian64> <1408997366.17421.5.camel@dubbel> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-wireless-owner@vger.kernel.org List-ID: On Monday, August 25, 2014 11:20:29 PM Emmanuel Grumbach wrote: > > Hi Christian, > > > > I'm not the best person to talk about the iwlwifi firmwares (that would > > be Emmanuel, but he is not available now), but I'll try. > > Here I am - thanks Luca for stepping in. Hello you both! > > > >> [...] > >> [ 1021.094192] Call Trace: > >> [ 1021.094205] [] ? dump_stack+0x41/0x51 > >> [ 1021.094217] [] ? iwl_trans_pcie_send_hcmd+0x367/0x438 [iwlwifi] > >> [ 1021.094226] [] ? iwl_pcie_enqueue_hcmd+0x5e3/0x5fe [iwlwifi] > >> [ 1021.094235] [] ? finish_wait+0x5d/0x5d > >> [ 1021.094250] [] ? iwl_mvm_send_cmd+0xd/0x22 [iwlmvm] > >> [ 1021.094262] [] ? iwl_mvm_send_cmd_pdu+0x45/0x52 [iwlmvm] > >> [ 1021.094273] [] ? iwl_mvm_configure_bcast_filter.isra.14.part.15+0x36/0x3f [iwlmvm] > >> > >> (Full log attached below) > >> > >> What cough my eye was the "BAD_COMMAND" in the error log. I disabled > >> "CONFIG_IWLWIFI_BCAST_FILTERING" option and the 3160 is now working. > >> > >> As far as I can tell, there is already a firmware feature flag: > >> "IWL_UCODE_TLV_FLAGS_BCAST_FILTERING" which can be used to > >> distinguish whenever the feature is supported or not. But it > >> seems to be "stuck on" for the 3160. > > > > Weird, but it's possible that they set the flag mistakenly for the 3160 > > firmware. I'll check this with the firmware team. > > > [...] > Actually, we do have an internal ticket with this issue - but I don't > know if it was on 3160 or on 7260. Your report explicitly says that > you saw this on 3160, so I am only now connecting between the dots. > I can't check the internal bug since I am on vacation right now. Note > that 3160 is much less common than 7260 - so this kind of stupid bugs > can stay unseen for a fairly long time... I have some 7260s too. As far as I can tell, they both (one is a 7260-N, the other a 7260-AC) support the BCAST_FILTERING feature. [I'll open a bug report @ iwlwifi#Bugzilla - and check out 25.222.9.0 too [0]] Regards Christian [0]