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From:   Martin Kaistra <martin.kaistra@linutronix.de>
To:     linux-wireless@vger.kernel.org
Cc:     Jes Sorensen <Jes.Sorensen@gmail.com>,
        Kalle Valo <kvalo@kernel.org>,
        Ping-Ke Shih <pkshih@realtek.com>,
        Bitterblue Smith <rtl8821cerfe2@gmail.com>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH v2 15/18] wifi: rtl8xxxu: Remove usage of ieee80211_get_tx_rate()
Date:   Wed, 19 Apr 2023 12:01:42 +0200
Message-Id: <20230419100145.159191-16-martin.kaistra@linutronix.de>
In-Reply-To: <20230419100145.159191-1-martin.kaistra@linutronix.de>
References: <20230419100145.159191-1-martin.kaistra@linutronix.de>
MIME-Version: 1.0
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As this driver uses HAS_RATE_CONTROL, tx_rates will not be provided by
mac80211.

For some frames c->control.rates[0].idx is negative, which means
ieee80211_get_tx_rate() will print a warning and return NULL.

Only management frames have USE_DRIVER_RATE set, so for all others the
rate info of txdesc is ignored anyway.

Remove call to ieee80211_get_tx_rate() and send management frames with
1M (rate info = 0).

Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
---
 .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 27 +++----------------
 1 file changed, 3 insertions(+), 24 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index f5b6ff3351e5a..b60f90ea5187b 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -5180,21 +5180,14 @@ rtl8xxxu_fill_txdesc_v1(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr,
 			bool short_preamble, bool ampdu_enable, u32 rts_rate,
 			u8 macid)
 {
-	struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info);
 	struct rtl8xxxu_priv *priv = hw->priv;
 	struct device *dev = &priv->udev->dev;
 	u8 *qc = ieee80211_get_qos_ctl(hdr);
 	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
-	u32 rate;
+	u32 rate = 0;
 	u16 rate_flags = tx_info->control.rates[0].flags;
 	u16 seq_number;
 
-	if (rate_flags & IEEE80211_TX_RC_MCS &&
-	    !ieee80211_is_mgmt(hdr->frame_control))
-		rate = tx_info->control.rates[0].idx + DESC_RATE_MCS0;
-	else
-		rate = tx_rate->hw_value;
-
 	if (rtl8xxxu_debug & RTL8XXXU_DEBUG_TX)
 		dev_info(dev, "%s: TX rate: %d, pkt size %u\n",
 			 __func__, rate, le16_to_cpu(tx_desc->pkt_size));
@@ -5253,24 +5246,17 @@ rtl8xxxu_fill_txdesc_v2(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr,
 			bool short_preamble, bool ampdu_enable, u32 rts_rate,
 			u8 macid)
 {
-	struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info);
 	struct rtl8xxxu_priv *priv = hw->priv;
 	struct device *dev = &priv->udev->dev;
 	struct rtl8xxxu_txdesc40 *tx_desc40;
 	u8 *qc = ieee80211_get_qos_ctl(hdr);
 	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
-	u32 rate;
+	u32 rate = 0;
 	u16 rate_flags = tx_info->control.rates[0].flags;
 	u16 seq_number;
 
 	tx_desc40 = (struct rtl8xxxu_txdesc40 *)tx_desc32;
 
-	if (rate_flags & IEEE80211_TX_RC_MCS &&
-	    !ieee80211_is_mgmt(hdr->frame_control))
-		rate = tx_info->control.rates[0].idx + DESC_RATE_MCS0;
-	else
-		rate = tx_rate->hw_value;
-
 	if (rtl8xxxu_debug & RTL8XXXU_DEBUG_TX)
 		dev_info(dev, "%s: TX rate: %d, pkt size %u\n",
 			 __func__, rate, le16_to_cpu(tx_desc40->pkt_size));
@@ -5334,22 +5320,15 @@ rtl8xxxu_fill_txdesc_v3(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr,
 			bool short_preamble, bool ampdu_enable, u32 rts_rate,
 			u8 macid)
 {
-	struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info);
 	struct rtl8xxxu_priv *priv = hw->priv;
 	struct device *dev = &priv->udev->dev;
 	struct rtl8xxxu_ra_info *ra = &priv->ra_info;
 	u8 *qc = ieee80211_get_qos_ctl(hdr);
 	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
-	u32 rate;
+	u32 rate = 0;
 	u16 rate_flags = tx_info->control.rates[0].flags;
 	u16 seq_number;
 
-	if (rate_flags & IEEE80211_TX_RC_MCS &&
-	    !ieee80211_is_mgmt(hdr->frame_control))
-		rate = tx_info->control.rates[0].idx + DESC_RATE_MCS0;
-	else
-		rate = tx_rate->hw_value;
-
 	seq_number = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
 
 	if (ieee80211_is_data(hdr->frame_control)) {
-- 
2.30.2