From patchwork Tue Jan 17 00:16:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 644047 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 6E3F6C54EBE for ; Tue, 17 Jan 2023 00:16:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234370AbjAQAQX (ORCPT ); Mon, 16 Jan 2023 19:16:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233398AbjAQAQV (ORCPT ); Mon, 16 Jan 2023 19:16:21 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B825622DE2 for ; Mon, 16 Jan 2023 16:16:19 -0800 (PST) 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 5457B61188 for ; Tue, 17 Jan 2023 00:16:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 567E3C433EF; Tue, 17 Jan 2023 00:16:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673914578; bh=r6auEO1BAK6L9pQl6Op0CsmdQkcg/US17zBOHUFc9EU=; h=From:To:Cc:Subject:Date:From; b=kxVh2AhW137CtAoxzmLI9f63eBy4LH8EoDzPASZxThyfgo7fiTSX/6asxa09TK4YR Q0j5G1c+ED5uncnQcGd+tV0BJ/hQrw/KOip+1ycNyJ+h+FLsRTIDsNXrTzA1YVpeXR teptfqXS1d7ANsngcy+IJn0+trF1vCRkYDIoi/p6HDIg7S1+6anarnUeYwB6HyYUIe SNncFTOsYwQRgXZvTBgTajg/PobLGgV54dQbrQ+7w7J65F1kaBS7wfI9WtvQTXROBW XUalnvDJTzuvcf4mZF6wgBlKD3jtXHRbQ1GfEjKXpU4rUm4+FoytZdzx3zzt0+LItc 8ouL4G3ux0sSw== From: Lorenzo Bianconi To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com Subject: [PATCH] wifi: mt76: mt7996: rely on mt76_connac2_mac_tx_rate_val Date: Tue, 17 Jan 2023 01:16:07 +0100 Message-Id: X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org In order to fix a possible NULL pointer dereference in mt7996_mac_write_txwi() of vif pointer, export mt76_connac2_mac_tx_rate_val utility routine and reuse it in mt7996 driver. Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Lorenzo Bianconi --- .../net/wireless/mediatek/mt76/mt76_connac.h | 3 ++ .../wireless/mediatek/mt76/mt76_connac_mac.c | 7 +-- .../net/wireless/mediatek/mt76/mt7996/mac.c | 48 +------------------ 3 files changed, 9 insertions(+), 49 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h index 8ba883b03e50..2ee9a3c8e25c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h @@ -370,6 +370,9 @@ void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi, struct sk_buff *skb, struct mt76_wcid *wcid, struct ieee80211_key_conf *key, int pid, enum mt76_txq_id qid, u32 changed); +u16 mt76_connac2_mac_tx_rate_val(struct mt76_phy *mphy, + struct ieee80211_vif *vif, + bool beacon, bool mcast); bool mt76_connac2_mac_fill_txs(struct mt76_dev *dev, struct mt76_wcid *wcid, __le32 *txs_data); bool mt76_connac2_mac_add_txs_skb(struct mt76_dev *dev, struct mt76_wcid *wcid, diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c index c8d0c84e688b..aed4ee95fb2e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c @@ -267,9 +267,9 @@ int mt76_connac_init_tx_queues(struct mt76_phy *phy, int idx, int n_desc, } EXPORT_SYMBOL_GPL(mt76_connac_init_tx_queues); -static u16 -mt76_connac2_mac_tx_rate_val(struct mt76_phy *mphy, struct ieee80211_vif *vif, - bool beacon, bool mcast) +u16 mt76_connac2_mac_tx_rate_val(struct mt76_phy *mphy, + struct ieee80211_vif *vif, + bool beacon, bool mcast) { u8 mode = 0, band = mphy->chandef.chan->band; int rateidx = 0, mcast_rate; @@ -319,6 +319,7 @@ mt76_connac2_mac_tx_rate_val(struct mt76_phy *mphy, struct ieee80211_vif *vif, return FIELD_PREP(MT_TX_RATE_IDX, rateidx) | FIELD_PREP(MT_TX_RATE_MODE, mode); } +EXPORT_SYMBOL_GPL(mt76_connac2_mac_tx_rate_val); static void mt76_connac2_mac_write_txwi_8023(__le32 *txwi, struct sk_buff *skb, diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index e198ab006c46..797dd920c0dd 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -959,51 +959,6 @@ mt7996_mac_write_txwi_80211(struct mt7996_dev *dev, __le32 *txwi, } } -static u16 -mt7996_mac_tx_rate_val(struct mt76_phy *mphy, struct ieee80211_vif *vif, - bool beacon, bool mcast) -{ - u8 mode = 0, band = mphy->chandef.chan->band; - int rateidx = 0, mcast_rate; - - if (beacon) { - struct cfg80211_bitrate_mask *mask; - - mask = &vif->bss_conf.beacon_tx_rate; - if (hweight16(mask->control[band].he_mcs[0]) == 1) { - rateidx = ffs(mask->control[band].he_mcs[0]) - 1; - mode = MT_PHY_TYPE_HE_SU; - goto out; - } else if (hweight16(mask->control[band].vht_mcs[0]) == 1) { - rateidx = ffs(mask->control[band].vht_mcs[0]) - 1; - mode = MT_PHY_TYPE_VHT; - goto out; - } else if (hweight8(mask->control[band].ht_mcs[0]) == 1) { - rateidx = ffs(mask->control[band].ht_mcs[0]) - 1; - mode = MT_PHY_TYPE_HT; - goto out; - } else if (hweight32(mask->control[band].legacy) == 1) { - rateidx = ffs(mask->control[band].legacy) - 1; - goto legacy; - } - } - - mcast_rate = vif->bss_conf.mcast_rate[band]; - if (mcast && mcast_rate > 0) - rateidx = mcast_rate - 1; - else - rateidx = ffs(vif->bss_conf.basic_rates) - 1; - -legacy: - rateidx = mt76_calculate_default_rate(mphy, rateidx); - mode = rateidx >> 8; - rateidx &= GENMASK(7, 0); - -out: - return FIELD_PREP(MT_TX_RATE_IDX, rateidx) | - FIELD_PREP(MT_TX_RATE_MODE, mode); -} - void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi, struct sk_buff *skb, struct mt76_wcid *wcid, int pid, struct ieee80211_key_conf *key, u32 changed) @@ -1091,7 +1046,8 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi, /* Fixed rata is available just for 802.11 txd */ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; bool multicast = is_multicast_ether_addr(hdr->addr1); - u16 rate = mt7996_mac_tx_rate_val(mphy, vif, beacon, multicast); + u16 rate = mt76_connac2_mac_tx_rate_val(mphy, vif, beacon, + multicast); /* fix to bw 20 */ val = MT_TXD6_FIXED_BW |