diff mbox series

[02/14] rtw88: allows to set RTS in TX descriptor

Message ID 20191002063531.18135-3-yhchuang@realtek.com (mailing list archive)
State Accepted
Commit 942e2a5d39a9706aa0115078a67659b4d071aece
Delegated to: Kalle Valo
Headers show
Series rtw88: add software TX queue support | expand

Commit Message

Tony Chuang Oct. 2, 2019, 6:35 a.m. UTC 
From: Yan-Hsuan Chuang <yhchuang@realtek.com>

Allows driver to send RTS by filling tx descriptor.

The user may want to set the rts threshold. But since we have not
been taking over rate control from mac80211 to driver by setting flag
IEEE80211_HW_HAS_RATE_CONTROL, there is nothing we can do about it.
So here just store the value, and mac80211 will tell us to use rts
protection by ieee80211_tx_info::control::use_rts.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
---
 drivers/net/wireless/realtek/rtw88/mac80211.c | 12 ++++++++++++
 drivers/net/wireless/realtek/rtw88/main.h     |  2 ++
 drivers/net/wireless/realtek/rtw88/tx.c       |  4 ++++
 drivers/net/wireless/realtek/rtw88/tx.h       |  2 ++
 4 files changed, 20 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 97777c7fdce8..1646f38fd940 100644
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -541,6 +541,17 @@  static void rtw_ops_mgd_prepare_tx(struct ieee80211_hw *hw,
 	mutex_unlock(&rtwdev->mutex);
 }
 
+static int rtw_ops_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+	struct rtw_dev *rtwdev = hw->priv;
+
+	mutex_lock(&rtwdev->mutex);
+	rtwdev->rts_threshold = value;
+	mutex_unlock(&rtwdev->mutex);
+
+	return 0;
+}
+
 const struct ieee80211_ops rtw_ops = {
 	.tx			= rtw_ops_tx,
 	.start			= rtw_ops_start,
@@ -557,5 +568,6 @@  const struct ieee80211_ops rtw_ops = {
 	.sw_scan_start		= rtw_ops_sw_scan_start,
 	.sw_scan_complete	= rtw_ops_sw_scan_complete,
 	.mgd_prepare_tx		= rtw_ops_mgd_prepare_tx,
+	.set_rts_threshold	= rtw_ops_set_rts_threshold,
 };
 EXPORT_SYMBOL(rtw_ops);
diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index 161297ad7d99..810bf151ad36 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -484,6 +484,7 @@  struct rtw_tx_pkt_info {
 	bool fs;
 	bool short_gi;
 	bool report;
+	bool rts;
 };
 
 struct rtw_rx_pkt_stat {
@@ -1377,6 +1378,7 @@  struct rtw_dev {
 	struct dentry *debugfs;
 
 	u8 sta_cnt;
+	u32 rts_threshold;
 
 	DECLARE_BITMAP(mac_id_map, RTW_MAX_MAC_ID_NUM);
 	DECLARE_BITMAP(flags, NUM_OF_RTW_FLAGS);
diff --git a/drivers/net/wireless/realtek/rtw88/tx.c b/drivers/net/wireless/realtek/rtw88/tx.c
index 91bfd8c28ff7..25fa932d0208 100644
--- a/drivers/net/wireless/realtek/rtw88/tx.c
+++ b/drivers/net/wireless/realtek/rtw88/tx.c
@@ -56,6 +56,7 @@  void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
 	SET_TX_DESC_DATA_SHORT(txdesc, pkt_info->short_gi);
 	SET_TX_DESC_SPE_RPT(txdesc, pkt_info->report);
 	SET_TX_DESC_SW_DEFINE(txdesc, pkt_info->sn);
+	SET_TX_DESC_USE_RTS(txdesc, pkt_info->rts);
 }
 EXPORT_SYMBOL(rtw_tx_fill_tx_desc);
 
@@ -258,6 +259,9 @@  static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev,
 		ampdu_density = get_tx_ampdu_density(sta);
 	}
 
+	if (info->control.use_rts)
+		pkt_info->rts = true;
+
 	if (sta->vht_cap.vht_supported)
 		rate = get_highest_vht_tx_rate(rtwdev, sta);
 	else if (sta->ht_cap.ht_supported)
diff --git a/drivers/net/wireless/realtek/rtw88/tx.h b/drivers/net/wireless/realtek/rtw88/tx.h
index 8338dbf55576..ab5b71f8ac22 100644
--- a/drivers/net/wireless/realtek/rtw88/tx.h
+++ b/drivers/net/wireless/realtek/rtw88/tx.h
@@ -35,6 +35,8 @@ 
 	le32p_replace_bits((__le32 *)(txdesc) + 0x09, value, GENMASK(23, 12))
 #define SET_TX_DESC_MAX_AGG_NUM(txdesc, value)                                 \
 	le32p_replace_bits((__le32 *)(txdesc) + 0x03, value, GENMASK(21, 17))
+#define SET_TX_DESC_USE_RTS(tx_desc, value)                                    \
+	le32p_replace_bits((__le32 *)(txdesc) + 0x03, value, BIT(12))
 #define SET_TX_DESC_AMPDU_DENSITY(txdesc, value)                               \
 	le32p_replace_bits((__le32 *)(txdesc) + 0x02, value, GENMASK(22, 20))
 #define SET_TX_DESC_DATA_STBC(txdesc, value)                                   \