Return-path: Received: from mail2.candelatech.com ([208.74.158.173]:47089 "EHLO mail2.candelatech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751059AbcBWO6O (ORCPT ); Tue, 23 Feb 2016 09:58:14 -0500 Message-ID: <56CC7385.5050004@candelatech.com> (sfid-20160223_155817_797301_C3663E97) Date: Tue, 23 Feb 2016 06:58:13 -0800 From: Ben Greear MIME-Version: 1.0 To: Johannes Berg , linux-wireless@vger.kernel.org CC: Jouni Malinen Subject: Re: [PATCH] mac80211: Let VHT work on 2.4Ghz References: <1456180974-21062-1-git-send-email-greearb@candelatech.com> <1456236627.9910.10.camel@sipsolutions.net> <56CC6A35.5000900@candelatech.com> <1456237373.9910.18.camel@sipsolutions.net> In-Reply-To: <1456237373.9910.18.camel@sipsolutions.net> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 02/23/2016 06:22 AM, Johannes Berg wrote: > On Tue, 2016-02-23 at 06:18 -0800, Ben Greear wrote: > >> [root@ben-ota2 lanforge]# iw phy wiphy0 info >> Wiphy wiphy0 >> >> Band 1: > [...] >> VHT Capabilities (0x338001b2): >> Max MPDU length: 11454 >> Supported Channel Width: neither 160 nor 80+80 >> RX LDPC >> short GI (80 MHz) >> TX STBC >> RX antenna pattern consistency >> TX antenna pattern consistency >> VHT RX MCS set: >> 1 streams: MCS 0-9 >> 2 streams: MCS 0-9 >> 3 streams: MCS 0-9 >> 4 streams: not supported >> 5 streams: not supported >> 6 streams: not supported >> 7 streams: not supported >> 8 streams: not supported >> VHT RX highest supported: 0 Mbps >> VHT TX MCS set: >> 1 streams: MCS 0-9 >> 2 streams: MCS 0-9 >> 3 streams: MCS 0-9 >> 4 streams: not supported >> 5 streams: not supported >> 6 streams: not supported >> 7 streams: not supported >> 8 streams: not supported >> VHT TX highest supported: 0 Mbps > >> Frequencies: >> * 2412 MHz [1] (30.0 dBm) >> > [...] > > Oops. Well, the driver isn't supposed to do that, this is certainly > non-spec behaviour. Is there any harm though? There is at least one other AP manufacturer that really wants to test this feature, so I guess there will be products on the market soon enough that support VHT in 2.4Ghz band. Some day soon-ish, we'll benchmark this in an isolation chamber & over-the-air to see how it actually performs. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com