From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from wolverine02.qualcomm.com ([199.106.114.251]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VpwmM-0007uN-36 for ath10k@lists.infradead.org; Mon, 09 Dec 2013 09:05:27 +0000 From: Kalle Valo Subject: Re: [BUG] QWLE900V5-18 - cannot achievie 3 spatial streams link References: <52A1FC69.7080901@elnovel.com> Date: Mon, 9 Dec 2013 11:04:56 +0200 In-Reply-To: (Janusz Dziedzic's message of "Fri, 6 Dec 2013 18:32:52 +0100") Message-ID: <874n6i1jk7.fsf@kamboji.qca.qualcomm.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Janusz Dziedzic Cc: Tomasz Tajmajer , ath10k@lists.infradead.org Janusz Dziedzic writes: > On 6 December 2013 17:33, Tomasz Tajmajer wrote: >> Hi, >> >> Recently, I've been making quite a lot of tests with two QWLE900V5-18 cards. >> I had some issues with the drivers (e.g. regarding the regulatory domain), >> but I've managed to fix them on my own. However, there is one issue that I >> cannot deal with. >> I'm trying to get the highest throughput possible using 3x3 MIMO. The >> problem is that the wifi card does not set higher rates than 2x433.3Mbps >> (MCS 9, VHT-NSS 2). The specification says that it should be possible to >> have 3 spatial streams. >> First, I thought it is a problem with some options of hostapd, but hostapd >> even does not allows me to set the [RX-STBC-12] or [RX-STBC-123] options. >> Only [RX-STBC-1] may be set in the configuration (what in fact, does not >> disallows the 2x433.3Mbps link, which is another issue). >> Driver info shows that the driver should support 3 spatial streams. >> I am not sure where is the problem, is it some bug in hostapd, which forces >> the card to use 2 spatial streams only or is it the driver, which does not >> enable 3 streams when it is possible. The physical connectivity (antennas >> etc.) is not the problem AFAIK. >> > > When sta assoc to ap you will get dbg mesg (you can enable this eg. > when loading ath10k_core module with param - debug_mask). > "mac ht peer %pM mcs cnt %d nss %d\n" - nss is interesting here This debug message is enabled with ATH10K_DBG_MAC. More info here: http://wireless.kernel.org/en/users/Drivers/ath10k/debug > Also rx_mcs_set for STA from ath10k_peer_assoc_h_vht() could be > interesting - unfortunetly we don't print this. But you can print > this. Indeed, we should include that to the message as well. -- Kalle Valo _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k