iwlwifi: 802.11n comply HT add station flow with mac80211 framework

This patch conforms the addition of a new station to the iwlwifi station
table according to the new mac80211's HT framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965-rs.c

@@ -2023,8 +2023,8 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
 		if (sta_id == IWL_INVALID_STATION) {
 			IWL_DEBUG_RATE("LQ: ADD station %s\n",
 				       print_mac(mac, hdr->addr1));
-			sta_id = iwl4965_add_station_flags(priv,
-						 hdr->addr1, 0, CMD_ASYNC);
+			sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
+							0, CMD_ASYNC, NULL);
 		}
 		if ((sta_id != IWL_INVALID_STATION)) {
 			lq->lq.sta_id = sta_id;
@@ -2101,8 +2101,8 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 		if (sta_id == IWL_INVALID_STATION) {
 			IWL_DEBUG_RATE("LQ: ADD station %s\n",
 				       print_mac(mac, sta->addr));
-			sta_id = iwl4965_add_station_flags(priv,
-						 sta->addr, 0, CMD_ASYNC);
+			sta_id = iwl4965_add_station_flags(priv, sta->addr,
+							0, CMD_ASYNC, NULL);
 		}
 		if ((sta_id != IWL_INVALID_STATION)) {
 			crl->lq.sta_id = sta_id;

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -4617,39 +4617,33 @@ void iwl4965_set_rxon_ht(struct iwl4965_priv *priv, struct iwl_ht_info *ht_info)
 	return;
 }
 
-void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index)
+void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index,
+				struct ieee80211_ht_info *sta_ht_inf)
 {
 	__le32 sta_flags;
-	struct sta_ht_info *ht_info = &priv->current_assoc_ht;
 
-	priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
-	if (!ht_info->is_ht)
+	if (!sta_ht_inf || !sta_ht_inf->ht_supported)
 		goto done;
 
 	sta_flags = priv->stations[index].sta.station_flags;
 
-	if (ht_info->tx_mimo_ps_mode == IWL_MIMO_PS_DYNAMIC)
+	if (((sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS >> 2))
+						== IWL_MIMO_PS_DYNAMIC)
 		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
 	else
 		sta_flags &= ~STA_FLG_RTS_MIMO_PROT_MSK;
 
 	sta_flags |= cpu_to_le32(
-		(u32)ht_info->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
+	      (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
 
 	sta_flags |= cpu_to_le32(
-		(u32)ht_info->mpdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
-
-	sta_flags &= (~STA_FLG_FAT_EN_MSK);
-	ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_20MHZ;
-	ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_20MHZ;
+	      (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
 
-	if (iwl4965_is_fat_tx_allowed(priv, ht_info)) {
+	if (iwl4965_is_fat_tx_allowed(priv, sta_ht_inf))
 		sta_flags |= STA_FLG_FAT_EN_MSK;
-		ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_40MHZ;
-		if (ht_info->supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ)
-			ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_40MHZ;
-	}
-	priv->current_channel_width = ht_info->tx_chan_width;
+	else
+		sta_flags &= (~STA_FLG_FAT_EN_MSK);
+
 	priv->stations[index].sta.station_flags = sta_flags;
  done:
 	return;

drivers/net/wireless/iwlwifi/iwl-4965.h

@@ -649,8 +649,8 @@ struct iwl4965_driver_hw_info {
 struct iwl4965_addsta_cmd;
 extern int iwl4965_send_add_station(struct iwl4965_priv *priv,
 				struct iwl4965_addsta_cmd *sta, u8 flags);
-extern u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *bssid,
-			  int is_ap, u8 flags);
+extern u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
+			  int is_ap, u8 flags, void *ht_data);
 extern int iwl4965_is_network_packet(struct iwl4965_priv *priv,
 				 struct ieee80211_hdr *header);
 extern int iwl4965_power_init_handle(struct iwl4965_priv *priv);
@@ -785,8 +785,6 @@ extern int iwl4965_tx_cmd(struct iwl4965_priv *priv, struct iwl4965_cmd *out_cmd
 			  struct ieee80211_tx_control *ctrl, void *sta_in);
 extern int iwl4965_alive_notify(struct iwl4965_priv *priv);
 extern void iwl4965_update_rate_scaling(struct iwl4965_priv *priv, u8 mode);
-extern void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index);
-
 extern void iwl4965_chain_noise_reset(struct iwl4965_priv *priv);
 extern void iwl4965_init_sensitivity(struct iwl4965_priv *priv, u8 flags,
 				     u8 force);
@@ -801,6 +799,8 @@ extern void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info,
 					int mode);
 extern void iwl4965_set_rxon_ht(struct iwl4965_priv *priv,
 				struct iwl_ht_info *ht_info);
+extern void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index,
+				struct ieee80211_ht_info *sta_ht_inf);
 #ifdef CONFIG_IWL4965_HT_AGG
 extern int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
 				   u16 tid, u16 *start_seq_num);

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -497,7 +497,8 @@ static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 /**
  * iwl4965_add_station_flags - Add station to tables in driver and device
  */
-u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
+u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
+				int is_ap, u8 flags, void *ht_data)
 {
 	int i;
 	int index = IWL_INVALID_STATION;
@@ -554,7 +555,8 @@ u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_a
 	/* BCAST station and IBSS stations do not work in HT mode */
 	if (index != priv->hw_setting.bcast_sta_id &&
 	    priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
-		iwl4965_set_ht_add_station(priv, index);
+		iwl4965_set_ht_add_station(priv, index,
+				 (struct ieee80211_ht_info *) ht_data);
 #endif /*CONFIG_IWL4965_HT*/
 
 	spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
@@ -900,7 +902,19 @@ static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 	u8 sta_id;
 
 	/* Add station to device's station table */
-	sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
+#ifdef CONFIG_IWL4965_HT
+	struct ieee80211_conf *conf = &priv->hw->conf;
+	struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
+
+	if ((is_ap) &&
+	    (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
+	    (priv->iw_mode == IEEE80211_IF_TYPE_STA))
+		sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
+						   0, cur_ht_config);
+	else
+#endif /* CONFIG_IWL4965_HT */
+		sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
+						   0, NULL);
 
 	/* Set up default rate scaling table in device's station table */
 	iwl4965_add_station(priv, addr, is_ap);
@@ -2834,7 +2848,8 @@ static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
 			return sta_id;
 
 		/* Create new station table entry */
-		sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
+		sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
+						   0, CMD_ASYNC, NULL);
 
 		if (sta_id != IWL_INVALID_STATION)
 			return sta_id;