From patchwork Wed Feb 22 06:27:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sujuan Chen X-Patchwork-Id: 13148752 X-Patchwork-Delegate: nbd@nbd.name 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 682B3C64EC4 for ; Wed, 22 Feb 2023 06:27:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229938AbjBVG15 (ORCPT ); Wed, 22 Feb 2023 01:27:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229560AbjBVG14 (ORCPT ); Wed, 22 Feb 2023 01:27:56 -0500 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 686357AA8 for ; Tue, 21 Feb 2023 22:27:54 -0800 (PST) X-UUID: 065c851ab27a11eda06fc9ecc4dadd91-20230222 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=NSMT0lcm6EAxxPcbyBTH5y2LsNF1ot+Tk8/CJS2AGO0=; b=XP9WfvZKdb/U8PFceFHBml6410lkajJv4fSyPe8zU9KeJE+ceS/KAutwuAmXb8LUBsgorQ/T00G75VArUCl437sKw/Iw8TkO9mouZtGQPO0FuGqWegAyqap4QRbXxWXc/2Qi9fc+zoP3Sn/UrL9geg6nCbOvR5pHjULPxj/HYY0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.20,REQID:2d9aa0ae-153f-4b32-9424-d0af941e4a15,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:25b5999,CLOUDID:10da5426-564d-42d9-9875-7c868ee415ec,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-UUID: 065c851ab27a11eda06fc9ecc4dadd91-20230222 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1848919654; Wed, 22 Feb 2023 14:27:48 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Wed, 22 Feb 2023 14:27:46 +0800 Received: from mcddlt001.gcn.mediatek.inc (10.19.240.15) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Wed, 22 Feb 2023 14:27:46 +0800 From: Sujuan Chen To: Felix Fietkau CC: linux-wireless , Peter Chiu , Bo Jiao , Ryder Lee , Evelyn Tsai , linux-mediatek , Sujuan Chen Subject: [PATCH] wifi: mt76: drop the incorrect scatter and gather frame Date: Wed, 22 Feb 2023 14:27:29 +0800 Message-ID: X-Mailer: git-send-email 2.17.0 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Peter Chiu The scatter and gather frame may be incorrect because WED and WO may send frames to host driver interleaved. Signed-off-by: Peter Chiu Signed-off-by: Sujuan Chen --- drivers/net/wireless/mediatek/mt76/dma.c | 6 ++++-- drivers/net/wireless/mediatek/mt76/dma.h | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index da281cd1d36f..738d7e1569bf 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -402,8 +402,8 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx, *info = le32_to_cpu(desc->info); if (mt76_queue_is_wed_rx(q)) { - u32 token = FIELD_GET(MT_DMA_CTL_TOKEN, - le32_to_cpu(desc->buf1)); + u32 buf1 = le32_to_cpu(desc->buf1); + u32 token = FIELD_GET(MT_DMA_CTL_TOKEN, buf1); struct mt76_txwi_cache *t = mt76_rx_token_release(dev, token); if (!t) @@ -424,6 +424,8 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx, *drop = !!(ctrl & (MT_DMA_CTL_TO_HOST_A | MT_DMA_CTL_DROP)); + + *drop |= !!(buf1 & MT_DMA_CTL_WO_DROP); } } else { buf = e->buf; diff --git a/drivers/net/wireless/mediatek/mt76/dma.h b/drivers/net/wireless/mediatek/mt76/dma.h index 4b9bc7f462b8..1b090d78cd05 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.h +++ b/drivers/net/wireless/mediatek/mt76/dma.h @@ -19,6 +19,7 @@ #define MT_DMA_CTL_TO_HOST_A BIT(12) #define MT_DMA_CTL_DROP BIT(14) #define MT_DMA_CTL_TOKEN GENMASK(31, 16) +#define MT_DMA_CTL_WO_DROP BIT(8) #define MT_DMA_PPE_CPU_REASON GENMASK(15, 11) #define MT_DMA_PPE_ENTRY GENMASK(30, 16)