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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C01C7C433F5 for ; Mon, 30 May 2022 14:14:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236885AbiE3OOc (ORCPT ); Mon, 30 May 2022 10:14:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239832AbiE3OI3 (ORCPT ); Mon, 30 May 2022 10:08:29 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F1B779827; Mon, 30 May 2022 06:42:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 576D760FCC; Mon, 30 May 2022 13:42:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22962C3411E; Mon, 30 May 2022 13:42:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653918141; bh=z0nAyk/VU0ksVU4YbjsvPBgUNPDMbbrVaHL11Of9pZI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tcXUM9Mt00yqROSr4JfU7kluOvUjdAknUI2SlVrSKG3DEbo6oBNNqurQYE5X8MSXg gQxUx9jP8QhM43z1uz6cfOQUhN/KzDzt2k3rnsvsWuaG0uwYPvfkg2K6TUqVIbXifo VQznQaLbo3RLRYCQ3ghfP4w/UMwAIwKW34fsTyCvrsCXmvKUroeEVQurnNnl5TJkVq FvbomnConRUsXi3coHcXUWikpQT3QHLQz8rgwxwq0DjfiKdxJQrAsbxV7DalEo/8j1 IXEb44q5+DLBbcuGv2kUX6ryAald9QmtkF+pTpBG+/kRUvl/ESW7pNbmDi62BAtXu8 cOjDI3Q0pzQuA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Felix Fietkau , =?UTF-8?q?Thibaut=20VAR=C3=88NE?= , Sasha Levin , lorenzo@kernel.org, ryder.lee@mediatek.com, kvalo@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, matthias.bgg@gmail.com, Bo.Jiao@mediatek.com, sujuan.chen@mediatek.com, shayne.chen@mediatek.com, greearb@candelatech.com, sean.wang@mediatek.com, deren.wu@mediatek.com, xing.song@mediatek.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 5.15 075/109] mt76: fix encap offload ethernet type check Date: Mon, 30 May 2022 09:37:51 -0400 Message-Id: <20220530133825.1933431-75-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220530133825.1933431-1-sashal@kernel.org> References: <20220530133825.1933431-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Felix Fietkau [ Upstream commit bc98e7fdd80d215b4b55eea001023231eb8ce12e ] The driver needs to check if the format is 802.2 vs 802.3 in order to set a tx descriptor flag. skb->protocol can't be used, since it may not be properly initialized for packets coming in from a packet socket. Fix misdetection by checking the ethertype from the skb data instead Reported-by: Thibaut VARÈNE Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 4 +++- drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 7691292526e0..a8a0e6af51f8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -799,6 +799,7 @@ mt7915_mac_write_txwi_8023(struct mt7915_dev *dev, __le32 *txwi, u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; u8 fc_type, fc_stype; + u16 ethertype; bool wmm = false; u32 val; @@ -812,7 +813,8 @@ mt7915_mac_write_txwi_8023(struct mt7915_dev *dev, __le32 *txwi, val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | FIELD_PREP(MT_TXD1_TID, tid); - if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN) + ethertype = get_unaligned_be16(&skb->data[12]); + if (ethertype >= ETH_P_802_3_MIN) val |= MT_TXD1_ETH_802_3; txwi[1] |= cpu_to_le32(val); diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c index 5024ddf07cbc..bef8d4a76ed9 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c @@ -681,6 +681,7 @@ mt7921_mac_write_txwi_8023(struct mt7921_dev *dev, __le32 *txwi, { u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; u8 fc_type, fc_stype; + u16 ethertype; bool wmm = false; u32 val; @@ -694,7 +695,8 @@ mt7921_mac_write_txwi_8023(struct mt7921_dev *dev, __le32 *txwi, val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | FIELD_PREP(MT_TXD1_TID, tid); - if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN) + ethertype = get_unaligned_be16(&skb->data[12]); + if (ethertype >= ETH_P_802_3_MIN) val |= MT_TXD1_ETH_802_3; txwi[1] |= cpu_to_le32(val); -- 2.35.1