From patchwork Thu Aug 4 01:07:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12936021 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 E6EE3C19F29 for ; Thu, 4 Aug 2022 01:58:50 +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:Date: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:In-Reply-To:References:List-Owner; bh=x2FoJzUe9lSoKYKsC9yyy/FQQPS//QbUJ/y1FD2QkfM=; b=Q5zjsri+bEfDpZbAXfUyUPzrVw ycYCxkHIC77S5/4UBn5BL4q3gAlHmEz+et0TNZQg2hqlZdWSadG15p5SRQInPHKwF12zE+VLpyeQt IX+5QII83cpkr/xCN8C3bYx+xkKdJv3veLuPG3BB4lnxL4R8b5Iu/0yidjLI2c0XNLiMlDMC8zrbh x6DJY9Z+W7hf1NNRgc+UFB+7ouHNxU7jEprNmtmt6rIM4XNRSEBcxzil0STKGv09q4xl562i9rsBk SgyZQf7RDh8m1ZMh0ilmbWleklwkPInfVZrvwNOGiSHau2hJhifl97nfWfoxe35h9KKFAiBzDC7B3 sWfuM3Ow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oJQ8I-00DZVO-Cj; Thu, 04 Aug 2022 01:58:42 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oJQ8F-00DZH5-8G for linux-mediatek@lists.infradead.org; Thu, 04 Aug 2022 01:58:41 +0000 X-UUID: c62c8a0754b7479291d0c59b6c88f5f9-20220803 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8,REQID:e27982e2-f593-4f35-a91d-36db8497e6ca,OB:0,LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:5 X-CID-META: VersionHash:0f94e32,CLOUDID:0a8b2bd1-841b-4e95-ad42-8f86e18f54fc,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: c62c8a0754b7479291d0c59b6c88f5f9-20220803 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1864342519; Wed, 03 Aug 2022 18:58:26 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Thu, 4 Aug 2022 09:07:46 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 4 Aug 2022 09:07:46 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , "Deren Wu" Subject: [PATCH v2] mt76: mt7921: fix antenna signal are way off in monitor mode Date: Thu, 4 Aug 2022 09:07:45 +0800 Message-ID: <0f95fcdb8511ec765040c8fe85c1fa09437e8ef5.1659574985.git.objelf@gmail.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220803_185839_444261_BAD09789 X-CRM114-Status: GOOD ( 13.40 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Sean Wang Group 3 in RxD is disabled in monitor mode. We should use the group 5 in RxD instead to fix antenna signal way off issue, e.g we would see the incorrect antenna signal value in wireshark. On the other hand, Group 5 wouldn't be used in STA or AP mode, so the patch shouldn't cause any harm to those modes. Fixes: cbaa0a404f8d ("mt76: mt7921: fix up the monitor mode") Reported-by: Adrian Granados Co-developed-by: Deren Wu Signed-off-by: Deren Wu Signed-off-by: Sean Wang --- v2: drop an unnecessary blank line and fix typo --- .../net/wireless/mediatek/mt76/mt7921/mac.c | 32 ++++++++++++------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c index 47f0aa81ab02..1c242f2ae997 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c @@ -394,6 +394,27 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb) if (v0 & MT_PRXV_HT_AD_CODE) status->enc_flags |= RX_ENC_FLAG_LDPC; + ret = mt76_connac2_mac_fill_rx_rate(&dev->mt76, status, sband, + rxv, &mode); + if (ret < 0) + return ret; + + if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { + rxd += 6; + if ((u8 *)rxd - skb->data >= skb->len) + return -EINVAL; + + rxv = rxd; + /* Monitor mode would use RCPI described in GROUP 5 + * instead. + */ + v1 = le32_to_cpu(rxv[0]); + + rxd += 12; + if ((u8 *)rxd - skb->data >= skb->len) + return -EINVAL; + } + status->chains = mphy->antenna_mask; status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1); status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1); @@ -408,17 +429,6 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb) status->signal = max(status->signal, status->chain_signal[i]); } - - ret = mt76_connac2_mac_fill_rx_rate(&dev->mt76, status, sband, - rxv, &mode); - if (ret < 0) - return ret; - - if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { - rxd += 18; - if ((u8 *)rxd - skb->data >= skb->len) - return -EINVAL; - } } amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4);