From patchwork Wed May 12 14:49:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 436629 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 88991C43462 for ; Wed, 12 May 2021 16:22:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69D6D61075 for ; Wed, 12 May 2021 16:22:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236777AbhELQXE (ORCPT ); Wed, 12 May 2021 12:23:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:58080 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240462AbhELQSH (ORCPT ); Wed, 12 May 2021 12:18:07 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 583A861D74; Wed, 12 May 2021 15:44:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620834253; bh=QVGmKyLAu1VLEa0grxvqfFi6Y/1TVYHFImckdqBGr0Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FkU47gPRlDhO/bzbxjYtBRTq1hIO4pMSRdzunqbbcirhqXVhihroEOXZCVtwZpDGP 8pANGIMoaJECayBCkRt11xSV629PNS199Ag3Yr2c4VkJgzTDtN/V6yasF/sTfIWuoD RofyjSgQCLSCAbOTGRKVKWV4AlYHqoc2zGbg3HCQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ryder Lee , Felix Fietkau , Sasha Levin Subject: [PATCH 5.11 470/601] mt76: mt7915: fix rxrate reporting Date: Wed, 12 May 2021 16:49:07 +0200 Message-Id: <20210512144843.328351900@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144827.811958675@linuxfoundation.org> References: <20210512144827.811958675@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ryder Lee [ Upstream commit 7883906d22c1e73f1f316bd84fc4a7ff8edd12aa ] Avoid directly updating sinfo->rxrate from firmware since rate_info might be overwritten by wrong results even mt7915_mcu_get_rx_rate() fails check. Add more error handlings accordingly. Fixes: 11553d88d0b9 ("mt76: mt7915: query station rx rate from firmware") Signed-off-by: Ryder Lee Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- .../net/wireless/mediatek/mt76/mt7915/main.c | 5 +- .../net/wireless/mediatek/mt76/mt7915/mcu.c | 47 ++++++++++--------- 2 files changed, 30 insertions(+), 22 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c index 2fa511ace45c..0721e9d85b65 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c @@ -833,9 +833,12 @@ static void mt7915_sta_statistics(struct ieee80211_hw *hw, struct mt7915_phy *phy = mt7915_hw_phy(hw); struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv; struct mt7915_sta_stats *stats = &msta->stats; + struct rate_info rxrate = {}; - if (mt7915_mcu_get_rx_rate(phy, vif, sta, &sinfo->rxrate) == 0) + if (!mt7915_mcu_get_rx_rate(phy, vif, sta, &rxrate)) { + sinfo->rxrate = rxrate; sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); + } if (!stats->tx_rate.legacy && !stats->tx_rate.flags) return; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index e211a2bd4d3c..ad71b8767c58 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -3469,9 +3469,8 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif, struct ieee80211_supported_band *sband; struct mt7915_mcu_phy_rx_info *res; struct sk_buff *skb; - u16 flags = 0; int ret; - int i; + bool cck = false; ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_CMD_PHY_STAT_INFO, &req, sizeof(req), true, &skb); @@ -3485,48 +3484,53 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif, switch (res->mode) { case MT_PHY_TYPE_CCK: + cck = true; + fallthrough; case MT_PHY_TYPE_OFDM: if (mphy->chandef.chan->band == NL80211_BAND_5GHZ) sband = &mphy->sband_5g.sband; else sband = &mphy->sband_2g.sband; - for (i = 0; i < sband->n_bitrates; i++) { - if (rate->mcs != (sband->bitrates[i].hw_value & 0xf)) - continue; - - rate->legacy = sband->bitrates[i].bitrate; - break; - } + rate->mcs = mt76_get_rate(&dev->mt76, sband, rate->mcs, cck); + rate->legacy = sband->bitrates[rate->mcs].bitrate; break; case MT_PHY_TYPE_HT: case MT_PHY_TYPE_HT_GF: - if (rate->mcs > 31) - return -EINVAL; - - flags |= RATE_INFO_FLAGS_MCS; + if (rate->mcs > 31) { + ret = -EINVAL; + goto out; + } + rate->flags = RATE_INFO_FLAGS_MCS; if (res->gi) - flags |= RATE_INFO_FLAGS_SHORT_GI; + rate->flags |= RATE_INFO_FLAGS_SHORT_GI; break; case MT_PHY_TYPE_VHT: - flags |= RATE_INFO_FLAGS_VHT_MCS; + if (rate->mcs > 9) { + ret = -EINVAL; + goto out; + } + rate->flags = RATE_INFO_FLAGS_VHT_MCS; if (res->gi) - flags |= RATE_INFO_FLAGS_SHORT_GI; + rate->flags |= RATE_INFO_FLAGS_SHORT_GI; break; case MT_PHY_TYPE_HE_SU: case MT_PHY_TYPE_HE_EXT_SU: case MT_PHY_TYPE_HE_TB: case MT_PHY_TYPE_HE_MU: + if (res->gi > NL80211_RATE_INFO_HE_GI_3_2 || rate->mcs > 11) { + ret = -EINVAL; + goto out; + } rate->he_gi = res->gi; - - flags |= RATE_INFO_FLAGS_HE_MCS; + rate->flags = RATE_INFO_FLAGS_HE_MCS; break; default: - break; + ret = -EINVAL; + goto out; } - rate->flags = flags; switch (res->bw) { case IEEE80211_STA_RX_BW_160: @@ -3543,7 +3547,8 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif, break; } +out: dev_kfree_skb(skb); - return 0; + return ret; }