Subject: [PATCH] rtlwifi: Remove seq_number from rtl_tid_data

From: <[email-masked]>
Date: Tue, 24 Oct 2017 10:03:31 +0800

From: Ping-Ke Shih <[email-masked]>

Since mac80211 maintains the sequence number for each STA/TID,
driver doesn't need to maintain a copy.

Signed-off-by: Ping-Ke Shih <[email-masked]>
---
 drivers/net/wireless/realtek/rtlwifi/base.c |  6 ++----
 drivers/net/wireless/realtek/rtlwifi/pci.c  | 17 -----------------
 drivers/net/wireless/realtek/rtlwifi/usb.c  | 17 -----------------
 drivers/net/wireless/realtek/rtlwifi/wifi.h |  1 -
 4 files changed, 2 insertions(+), 39 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c
index 0b34886321f1..9f35b25bddf2 100644
--- a/drivers/net/wireless/realtek/rtlwifi/base.c
+++ b/drivers/net/wireless/realtek/rtlwifi/base.c
@@ -1618,9 +1618,8 @@ int rtl_tx_agg_start(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 
 	RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
 		 "on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
-		 tid_data->seq_number);
+		 *ssn);
 
-	*ssn = tid_data->seq_number;
 	tid_data->agg.agg_state = RTL_AGG_START;
 
 	ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
@@ -1679,8 +1678,7 @@ int rtl_rx_agg_start(struct ieee80211_hw *hw,
 	tid_data = &sta_entry->tids[tid];
 
 	RT_TRACE(rtlpriv, COMP_RECV, DBG_DMESG,
-		 "on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
-		 tid_data->seq_number);
+		 "on ra = %pM tid = %d\n", sta->addr, tid);
 
 	tid_data->agg.rx_agg_state = RTL_RX_AGG_START;
 	return 0;
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
index b9a6d23364be..eb12818b46b3 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -1623,7 +1623,6 @@ static int rtl_pci_tx(struct ieee80211_hw *hw,
 		      struct rtl_tcb_desc *ptcb_desc)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	struct rtl_sta_info *sta_entry = NULL;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct rtl8192_tx_ring *ring;
 	struct rtl_tx_desc *pdesc;
@@ -1635,9 +1634,6 @@ static int rtl_pci_tx(struct ieee80211_hw *hw,
 	__le16 fc = rtl_get_fc(skb);
 	u8 *pda_addr = hdr->addr1;
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
-	/*ssn */
-	u8 tid = 0;
-	u16 seq_number = 0;
 	u8 own;
 	u8 temp_one = 1;
 
@@ -1699,19 +1695,6 @@ static int rtl_pci_tx(struct ieee80211_hw *hw,
 			return skb->len;
 	}
 
-	if (ieee80211_is_data_qos(fc)) {
-		tid = rtl_get_tid(skb);
-		if (sta) {
-			sta_entry = (struct rtl_sta_info *)sta->drv_priv;
-			seq_number = (le16_to_cpu(hdr->seq_ctrl) &
-				      IEEE80211_SCTL_SEQ) >> 4;
-			seq_number += 1;
-
-			if (!ieee80211_has_morefrags(hdr->frame_control))
-				sta_entry->tids[tid].seq_number = seq_number;
-		}
-	}
-
 	if (ieee80211_is_data(fc))
 		rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
 
diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 5590d07d0918..39b033b3b53a 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -952,17 +952,12 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
 				   u16 hw_queue)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct rtl_tx_desc *pdesc = NULL;
 	struct rtl_tcb_desc tcb_desc;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
 	__le16 fc = hdr->frame_control;
 	u8 *pda_addr = hdr->addr1;
-	/* ssn */
-	u8 *qc = NULL;
-	u8 tid = 0;
-	u16 seq_number = 0;
 
 	memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
 	if (ieee80211_is_auth(fc)) {
@@ -983,20 +978,8 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
 		rtlpriv->stats.txbytesbroadcast += skb->len;
 	else
 		rtlpriv->stats.txbytesunicast += skb->len;
-	if (ieee80211_is_data_qos(fc)) {
-		qc = ieee80211_get_qos_ctl(hdr);
-		tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
-		seq_number = (le16_to_cpu(hdr->seq_ctrl) &
-			     IEEE80211_SCTL_SEQ) >> 4;
-		seq_number += 1;
-		seq_number <<= 4;
-	}
 	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
 					hw_queue, &tcb_desc);
-	if (!ieee80211_has_morefrags(hdr->frame_control)) {
-		if (qc)
-			mac->tids[tid].seq_number = seq_number;
-	}
 	if (ieee80211_is_data(fc))
 		rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
 }
diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h b/drivers/net/wireless/realtek/rtlwifi/wifi.h
index 7dfc73b554f1..22afc14c3da6 100644
--- a/drivers/net/wireless/realtek/rtlwifi/wifi.h
+++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h
@@ -1324,7 +1324,6 @@ struct rssi_sta {
 };
 
 struct rtl_tid_data {
-	u16 seq_number;
 	struct rtl_ht_agg agg;
 };
 
-- 
2.14.1