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 X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3900AC56202 for ; Tue, 27 Oct 2020 00:06:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03B9A20791 for ; Tue, 27 Oct 2020 00:06:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603757199; bh=eE45FQe6rrW8JgdP2IUOWX70ZB1+Gg4M8y53MdY4kk4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=P6UeE1OXCqytoCaRznKDX0tzpZAbe+4JYSlnIKS+O0HEMVPYlq9EIM5oktsgx36Ya ZK8TiEScg20YBW+FLbx07DmAi26YnzxoVpoBnE8DQJOo7x0zO0Gk8v1uBG2ETkgcU2 btQ1tXN91BqntyCADAs53unXTjyZdCB4DqRvF+Fo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389929AbgJ0AEe (ORCPT ); Mon, 26 Oct 2020 20:04:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:53016 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729249AbgJ0AEd (ORCPT ); Mon, 26 Oct 2020 20:04:33 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8439B20791; Tue, 27 Oct 2020 00:04:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603757073; bh=eE45FQe6rrW8JgdP2IUOWX70ZB1+Gg4M8y53MdY4kk4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r/IkIO6TGzEM4CBFq+yAeVZL/pDbyEmvb22DtkpEP/0980A0WKFAMDRwjIb2DZ6rH Hm1p3c/Q+AalwD9Ud6csskPO5N9WZ5ThmxNRkgPBpDmFJ/797aBude+esmPWqewpxy Pu6yUO8ifQkn+QNIvIOJ/bkW2nFRZQ1Sbw9uf+Cw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sathishkumar Muruganandam , Kalle Valo , Sasha Levin , ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 14/60] ath10k: fix VHT NSS calculation when STBC is enabled Date: Mon, 26 Oct 2020 20:03:29 -0400 Message-Id: <20201027000415.1026364-14-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201027000415.1026364-1-sashal@kernel.org> References: <20201027000415.1026364-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sathishkumar Muruganandam [ Upstream commit 99f41b8e43b8b4b31262adb8ac3e69088fff1289 ] When STBC is enabled, NSTS_SU value need to be accounted for VHT NSS calculation for SU case. Without this fix, 1SS + STBC enabled case was reported wrongly as 2SS in radiotap header on monitor mode capture. Tested-on: QCA9984 10.4-3.10-00047 Signed-off-by: Sathishkumar Muruganandam Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1597392971-3897-1-git-send-email-murugana@codeaurora.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/htt_rx.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 03d4cc6f35bcd..64c0c9f1a10c3 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -759,6 +759,7 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar, u8 preamble = 0; u8 group_id; u32 info1, info2, info3; + u32 stbc, nsts_su; info1 = __le32_to_cpu(rxd->ppdu_start.info1); info2 = __le32_to_cpu(rxd->ppdu_start.info2); @@ -803,11 +804,16 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar, */ bw = info2 & 3; sgi = info3 & 1; + stbc = (info2 >> 3) & 1; group_id = (info2 >> 4) & 0x3F; if (GROUP_ID_IS_SU_MIMO(group_id)) { mcs = (info3 >> 4) & 0x0F; - nss = ((info2 >> 10) & 0x07) + 1; + nsts_su = ((info2 >> 10) & 0x07); + if (stbc) + nss = (nsts_su >> 2) + 1; + else + nss = (nsts_su + 1); } else { /* Hardware doesn't decode VHT-SIG-B into Rx descriptor * so it's impossible to decode MCS. Also since -- 2.25.1