Return-path: Received: from mail-wi0-f182.google.com ([209.85.212.182]:35269 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755046AbbDILCS convert rfc822-to-8bit (ORCPT ); Thu, 9 Apr 2015 07:02:18 -0400 Received: by widdi4 with SMTP id di4so87597218wid.0 for ; Thu, 09 Apr 2015 04:02:17 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20150409073525.GA21000@w1.fi> References: <1428422722-655-1-git-send-email-ilan.peer@intel.com> <552400F4.5010701@candelatech.com> <20150409073525.GA21000@w1.fi> From: Krishna Chaitanya Date: Thu, 9 Apr 2015 16:31:57 +0530 Message-ID: (sfid-20150409_130225_707275_04CA9630) Subject: Re: [PATCH 1/2] mac80211_hwsim: Set VHT capabilities only for the 5.2 GHz band To: Jouni Malinen Cc: "Peer, Ilan" , Ben Greear , "linux-wireless@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Apr 9, 2015 at 1:05 PM, Jouni Malinen wrote: > On Wed, Apr 08, 2015 at 06:29:38PM +0000, Peer, Ilan wrote: >> According to the 802.11ac amendment: "The IEEE 802.11 VHT STA operates in frequency bands below 6 GHz excluding the 2.4 GHz band", so at least the spec. is clear about it. However, I guess it would be possible to enable VHT for 2.4 as well to enjoy some of benefits, but do you see a reason/use case to enable it also for hwsim? > > It does not matter what the standard says on VHT in general; there are > clearly already products out there that allow some capabilities defined > in 802.11ac (mainly, 256-QAM) to be used on the 2.4 GHz band. Can you name a few for reference? >As far as > hwsim is concerned, I'm already using it to verify the negotiation part > for this (see ap_vht_on_24ghz test case). The main remaining question > for cfg80211/nl80211 is on whether we can come up with a clean way of > advertising driver capability for doing this. In order to properly utilize these we need to incorporate these capabilities in to minstrel RC as well. Any plans for that?