From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4719CCD342E for ; Tue, 3 Sep 2024 07:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:In-Reply-To:Date:References:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rSDO9kCD8U1s88ISNDyHoD5Nkjx2eQ5VvHUApskg3h4=; b=MUJxu5aVaMq+Ig78ylkblFQycM RpDEw3sqfB8JDllexIoZfBIFYIQCVhokn9WtBDGPLqS7Z7GRDJjA2x667CYJb4DKHmZSGS6fxx+HH CBOmjkrW+Lj88YUZf9tmFxouWwUVfddyqPryRmDs3jIfNtPFuNi76ngJeYQtZSaVZ5H56GDh5QwFE uOyB0MarMAlQWJ/QDNfMeTHms7+lo+CwHirGOACMO7nbl3mWnebgOIq0M3skeGlNgiv4WpqPjaraB TxmROSrkM0uV0tXlXF2tG9KIWNby2+qDd7V9UPpsd1dhL8Qs6gpOhveGZOs7eaz2sDajGqbYQmdbu wXzuxhnw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1slOLB-0000000Glpq-465q for ath12k@archiver.kernel.org; Tue, 03 Sep 2024 07:52:41 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1slOGZ-0000000Gkag-3Ryz for ath12k@lists.infradead.org; Tue, 03 Sep 2024 07:47:57 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id C11C8A41491; Tue, 3 Sep 2024 07:47:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CC73C4CEC5; Tue, 3 Sep 2024 07:47:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725349674; bh=PJ0iF1A09ij98ZFolpxphon2vSG84bDBPK3X5ONQHrY=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=U9VGjz8tpddNQ/q7pQBZJtThpNG0jiBzU9o+lLUeozBEbXkrK0o5vYPWgy05HZBh2 iVrRotvXsgBKEfRQNXVzAwrkIkJK8AIYZB5zgbRhpkiIz+aspHqQ6EvSy0wXe0nGeZ Jhpovx9IPr9r9rHCXFIatKn0pKvpuMp+FVbbEXRe8HYMNhuuTXmm4hlHYhEP1SP4BQ AVvYaH9gDGid6zoPgjXxk/mM0kAZ4UU80emMW+ssfuHkYPHz/18ms8w4lzH8MYwPc3 VVI4ovlfU8NDn/a2zSJGS3AgPgeCT5vMYMRo3w4YNRQgt0zG5lcaY5Pg295d/HIcRl PJyDhg4Vv5ISQ== From: Kalle Valo To: david Atkins Cc: Baochen Qiang , "ath12k@lists.infradead.org" , linux-wireless@vger.kernel.org Subject: Re: wcn7850 issues References: <26bb8ec7-7170-4a09-ada3-c7c753c16e87@quicinc.com> <86bc1623-8845-43fa-9aad-a8a6066b1448@quicinc.com> Date: Tue, 03 Sep 2024 10:47:51 +0300 In-Reply-To: (david Atkins's message of "Tue, 3 Sep 2024 06:29:29 +0000") Message-ID: <871q21kwk8.fsf@kernel.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240903_004756_012259_CA4372CF X-CRM114-Status: GOOD ( 15.38 ) X-BeenThere: ath12k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath12k" Errors-To: ath12k-bounces+ath12k=archiver.kernel.org@lists.infradead.org + linux-wireless david Atkins writes: > ... >> >>> Ext Tag: EHT Operation (802.11be D3.0) >> >>> Ext Tag length: 8 (Tag len: 9) >> >>> Ext Tag Number: EHT Operation (802.11be D3.0) (106) >> >>> EHT Operation Parameters: 0x01, EHT Operation Information >> Present >> >>> .... ...1 = EHT Operation Information Present: True >> >>> .... ..0. = Disabled Subchannel Bitmap Present: False >> >>> .... .0.. = EHT Default PE Duration: False >> >>> .... 0... = Group Addressed BU Indication Limit: False >> >>> ..00 .... = Group Addressed BU Indication Exponent: 0 >> >>> 00.. .... = Reserved: 0x0 >> >>> Basic EHT-MCS And Nss Set: 0x44444444 >> >>> Control: 0x02, Channel Width: 80 MHz EHT BSS bandwidth >> >>> .... .010 = Channel Width: 80 MHz EHT BSS bandwidth (2) >> >>> 0000 0... = Reserved: 0x00 >> >>> >> >>> Are you saying the ath12k driver does not support these features? If >> >>> not can >> >> you clarify the issue so I can raise with the AP team. >> >>> >> >> ath12k/WCN7850 supports EHT, but with NSS only 2. Here the AP >> >> requires NSS to be no less than 4, that is why EHT connection was disabled. >> > >> > Which field is requiring NSS of 4, I'm only seeing a maximum of 4, the >> Qualcomm windows driver will connect to the same AP, we had assumed that >> that ath12k would do the same. >> Basic EHT-MCS And Nss Set: 0x44444444 > > My understanding of the spec is that there are maximum numbers of > streams though, are you saying the AP has to advertise 0x22222222 > which would then prevent a 4x4 client (say an extender) from > connecting with 4 streams? I note that the Qualcomm windows driver for > Hamilton works with the AP and an Intel BE200 also works both of which > will be in at most 2x2 Did you test Intel BE200 with the Windows driver? Johannes mentioned that ieee80211_verify_sta_eht_mcs_support() in mac80211 checks this so I would assume that iwlwifi also behaves like ath12k. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches https://docs.kernel.org/process/submitting-patches.html