rtlwifi: Convert rc routines for addition of rtl8192se and rtl8192de

Convert rc routines for addition of RTL8192SE and RTL8192DE code
Signed-off-by: Chaoming_Li <chaoming_li@realsil.com.cn>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtlwifi/rc.c

@@ -38,17 +38,14 @@
  *CCK11M or OFDM_54M based on wireless mode.
  */
 static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
+				  struct ieee80211_sta *sta,
 				  struct sk_buff *skb, bool not_data)
 {
 	struct rtl_mac *rtlmac = rtl_mac(rtlpriv);
-
-	/*
-	 *mgt use 1M, although we have check it
-	 *before this function use rate_control_send_low,
-	 *we still check it here
-	 */
-	if (not_data)
-		return rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
+	struct rtl_phy *rtlphy = &(rtlpriv->phy);
+	struct rtl_sta_info *sta_entry = NULL;
+	u8 wireless_mode = 0;
 
 	/*
 	 *this rate is no use for true rate, firmware
@@ -57,35 +54,78 @@ static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
 	 *2.in rtl_get_tcb_desc when we check rate is
 	 *      1M we will not use FW rate but user rate.
 	 */
-	if (rtl_is_special_data(rtlpriv->mac80211.hw, skb, true)) {
-		return rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+	if (rtlmac->opmode == NL80211_IFTYPE_AP ||
+		rtlmac->opmode == NL80211_IFTYPE_ADHOC) {
+		if (sta) {
+			sta_entry = (struct rtl_sta_info *) sta->drv_priv;
+			wireless_mode = sta_entry->wireless_mode;
+		} else {
+			return 0;
+		}
+	} else {
+		wireless_mode = rtlmac->mode;
+	}
+
+	if (rtl_is_special_data(rtlpriv->mac80211.hw, skb, true) ||
+			not_data) {
+		return 0;
 	} else {
-		if (rtlmac->mode == WIRELESS_MODE_B)
-			return rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
-		else
-			return rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
+		if (rtlhal->current_bandtype == BAND_ON_2_4G) {
+			if (wireless_mode == WIRELESS_MODE_B) {
+				return B_MODE_MAX_RIX;
+			} else if (wireless_mode == WIRELESS_MODE_G) {
+				return G_MODE_MAX_RIX;
+			} else {
+				if (get_rf_type(rtlphy) != RF_2T2R)
+					return N_MODE_MCS7_RIX;
+				else
+					return N_MODE_MCS15_RIX;
+			}
+		} else {
+			if (wireless_mode == WIRELESS_MODE_A) {
+				return A_MODE_MAX_RIX;
+			} else {
+				if (get_rf_type(rtlphy) != RF_2T2R)
+					return N_MODE_MCS7_RIX;
+				else
+					return N_MODE_MCS15_RIX;
+			}
+		}
 	}
 }
 
 static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
+				    struct ieee80211_sta *sta,
 				    struct ieee80211_tx_rate *rate,
 				    struct ieee80211_tx_rate_control *txrc,
-				    u8 tries, u8 rix, int rtsctsenable,
+				    u8 tries, char rix, int rtsctsenable,
 				    bool not_data)
 {
 	struct rtl_mac *mac = rtl_mac(rtlpriv);
+	u8 sgi_20 = 0, sgi_40 = 0;
 
+	if (sta) {
+		sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
+		sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
+	}
 	rate->count = tries;
-	rate->idx = (rix > 0x2) ? rix : 0x2;
+	rate->idx = rix >= 0x00 ? rix : 0x00;
 
 	if (!not_data) {
 		if (txrc->short_preamble)
 			rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
-		if (mac->bw_40)
-			rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
-		if (mac->sgi_20 || mac->sgi_40)
+		if (mac->opmode == NL80211_IFTYPE_AP ||
+			mac->opmode == NL80211_IFTYPE_ADHOC) {
+			if (sta && (sta->ht_cap.cap &
+			    IEEE80211_HT_CAP_SUP_WIDTH_20_40))
+				rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+		} else {
+			if (mac->bw_40)
+				rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+		}
+		if (sgi_20 || sgi_40)
 			rate->flags |= IEEE80211_TX_RC_SHORT_GI;
-		if (mac->ht_enable)
+		if (sta && sta->ht_cap.ht_supported)
 			rate->flags |= IEEE80211_TX_RC_MCS;
 	}
 }
@@ -97,39 +137,39 @@ static void rtl_get_rate(void *ppriv, struct ieee80211_sta *sta,
 	struct sk_buff *skb = txrc->skb;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_tx_rate *rates = tx_info->control.rates;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-	__le16 fc = hdr->frame_control;
+	__le16 fc = rtl_get_fc(skb);
 	u8 try_per_rate, i, rix;
 	bool not_data = !ieee80211_is_data(fc);
 
 	if (rate_control_send_low(sta, priv_sta, txrc))
 		return;
 
-	rix = _rtl_rc_get_highest_rix(rtlpriv, skb, not_data);
-
+	rix = _rtl_rc_get_highest_rix(rtlpriv, sta, skb, not_data);
 	try_per_rate = 1;
-	_rtl_rc_rate_set_series(rtlpriv, &rates[0], txrc,
+	_rtl_rc_rate_set_series(rtlpriv, sta, &rates[0], txrc,
 				try_per_rate, rix, 1, not_data);
 
 	if (!not_data) {
 		for (i = 1; i < 4; i++)
-			_rtl_rc_rate_set_series(rtlpriv, &rates[i],
+			_rtl_rc_rate_set_series(rtlpriv, sta, &rates[i],
 						txrc, i, (rix - i), 1,
 						not_data);
 	}
 }
 
-static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv, u16 tid)
+static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv,
+		struct rtl_sta_info *sta_entry, u16 tid)
 {
 	struct rtl_mac *mac = rtl_mac(rtlpriv);
 
 	if (mac->act_scanning)
 		return false;
 
-	if (mac->cnt_after_linked < 3)
+	if (mac->opmode == NL80211_IFTYPE_STATION &&
+		mac->cnt_after_linked < 3)
 		return false;
 
-	if (mac->tids[tid].agg.agg_state == RTL_AGG_OFF)
+	if (sta_entry->tids[tid].agg.agg_state == RTL_AGG_STOP)
 		return true;
 
 	return false;
@@ -143,11 +183,9 @@ static void rtl_tx_status(void *ppriv,
 {
 	struct rtl_priv *rtlpriv = ppriv;
 	struct rtl_mac *mac = rtl_mac(rtlpriv);
-	struct ieee80211_hdr *hdr;
-	__le16 fc;
-
-	hdr = (struct ieee80211_hdr *)skb->data;
-	fc = hdr->frame_control;
+	struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
+	__le16 fc = rtl_get_fc(skb);
+	struct rtl_sta_info *sta_entry;
 
 	if (!priv_sta || !ieee80211_is_data(fc))
 		return;
@@ -159,17 +197,21 @@ static void rtl_tx_status(void *ppriv,
 	    || is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 		return;
 
-	/* Check if aggregation has to be enabled for this tid */
-	if (conf_is_ht(&mac->hw->conf) &&
-	    !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
-		if (ieee80211_is_data_qos(fc)) {
-			u8 *qc, tid;
-
-			qc = ieee80211_get_qos_ctl(hdr);
-			tid = qc[0] & 0xf;
-
-			if (_rtl_tx_aggr_check(rtlpriv, tid))
-				ieee80211_start_tx_ba_session(sta, tid, 5000);
+	if (sta) {
+		/* Check if aggregation has to be enabled for this tid */
+		sta_entry = (struct rtl_sta_info *) sta->drv_priv;
+		if ((sta->ht_cap.ht_supported == true) &&
+				!(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
+			if (ieee80211_is_data_qos(fc)) {
+				u8 tid = rtl_get_tid(skb);
+				if (_rtl_tx_aggr_check(rtlpriv, sta_entry,
+				    tid)) {
+					sta_entry->tids[tid].agg.agg_state =
+							 RTL_AGG_PROGRESS;
+					ieee80211_start_tx_ba_session(sta,
+								 tid, 5000);
+				}
+			}
 		}
 	}
 }
@@ -178,43 +220,6 @@ static void rtl_rate_init(void *ppriv,
 			  struct ieee80211_supported_band *sband,
 			  struct ieee80211_sta *sta, void *priv_sta)
 {
-	struct rtl_priv *rtlpriv = ppriv;
-	struct rtl_mac *mac = rtl_mac(rtlpriv);
-	u8 is_ht = conf_is_ht(&mac->hw->conf);
-
-	if ((mac->opmode == NL80211_IFTYPE_STATION) ||
-	    (mac->opmode == NL80211_IFTYPE_MESH_POINT) ||
-	    (mac->opmode == NL80211_IFTYPE_ADHOC)) {
-
-		switch (sband->band) {
-		case IEEE80211_BAND_2GHZ:
-			rtlpriv->rate_priv->cur_ratetab_idx =
-			    RATR_INX_WIRELESS_G;
-			if (is_ht)
-				rtlpriv->rate_priv->cur_ratetab_idx =
-				    RATR_INX_WIRELESS_NGB;
-			break;
-		case IEEE80211_BAND_5GHZ:
-			rtlpriv->rate_priv->cur_ratetab_idx =
-			    RATR_INX_WIRELESS_A;
-			if (is_ht)
-				rtlpriv->rate_priv->cur_ratetab_idx =
-				    RATR_INX_WIRELESS_NGB;
-			break;
-		default:
-			RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
-				 ("Invalid band\n"));
-			rtlpriv->rate_priv->cur_ratetab_idx =
-			    RATR_INX_WIRELESS_NGB;
-			break;
-		}
-
-		RT_TRACE(rtlpriv, COMP_RATE, DBG_DMESG,
-			 ("Choosing rate table index: %d\n",
-			  rtlpriv->rate_priv->cur_ratetab_idx));
-
-	}
-
 }
 
 static void rtl_rate_update(void *ppriv,
@@ -223,49 +228,6 @@ static void rtl_rate_update(void *ppriv,
 			    u32 changed,
 			    enum nl80211_channel_type oper_chan_type)
 {
-	struct rtl_priv *rtlpriv = ppriv;
-	struct rtl_mac *mac = rtl_mac(rtlpriv);
-	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
-	bool oper_cw40 = false, oper_sgi40;
-	bool local_cw40 = mac->bw_40;
-	bool local_sgi40 = mac->sgi_40;
-	u8 is_ht = conf_is_ht(&mac->hw->conf);
-
-	if (changed & IEEE80211_RC_HT_CHANGED) {
-		if (mac->opmode != NL80211_IFTYPE_STATION)
-			return;
-
-		if (rtlhal->hw->conf.channel_type == NL80211_CHAN_HT40MINUS ||
-		    rtlhal->hw->conf.channel_type == NL80211_CHAN_HT40PLUS)
-			oper_cw40 = true;
-
-		oper_sgi40 = mac->sgi_40;
-
-		if ((local_cw40 != oper_cw40) || (local_sgi40 != oper_sgi40)) {
-			switch (sband->band) {
-			case IEEE80211_BAND_2GHZ:
-				rtlpriv->rate_priv->cur_ratetab_idx =
-				    RATR_INX_WIRELESS_G;
-				if (is_ht)
-					rtlpriv->rate_priv->cur_ratetab_idx =
-					    RATR_INX_WIRELESS_NGB;
-				break;
-			case IEEE80211_BAND_5GHZ:
-				rtlpriv->rate_priv->cur_ratetab_idx =
-				    RATR_INX_WIRELESS_A;
-				if (is_ht)
-					rtlpriv->rate_priv->cur_ratetab_idx =
-					    RATR_INX_WIRELESS_NGB;
-				break;
-			default:
-				RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
-					 ("Invalid band\n"));
-				rtlpriv->rate_priv->cur_ratetab_idx =
-				    RATR_INX_WIRELESS_NGB;
-				break;
-			}
-		}
-	}
 }
 
 static void *rtl_rate_alloc(struct ieee80211_hw *hw,

drivers/net/wireless/rtlwifi/rc.h

@@ -30,8 +30,15 @@
 #ifndef __RTL_RC_H__
 #define __RTL_RC_H__
 
+#define B_MODE_MAX_RIX 3
+#define G_MODE_MAX_RIX 11
+#define A_MODE_MAX_RIX 7
+
+/* in mac80211 mcs0-mcs15 is idx0-idx15*/
+#define N_MODE_MCS7_RIX 7
+#define N_MODE_MCS15_RIX 15
+
 struct rtl_rate_priv {
-	u8 cur_ratetab_idx;
 	u8 ht_cap;
 };