1 files changed, 99 insertions, 51 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 90fbdb25399..4a6686fa6b3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -80,46 +80,103 @@ int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
 }
 EXPORT_SYMBOL(iwl_get_ra_sta_id);
 
+/* priv->sta_lock must be held */
 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->sta_lock, flags);
 
 	if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
-		IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
-			sta_id);
-
-	priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
-	IWL_DEBUG_ASSOC(priv, "Added STA to Ucode: %pM\n",
-			priv->stations[sta_id].sta.sta.addr);
+		IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
+			sta_id, priv->stations[sta_id].sta.sta.addr);
 
-	spin_unlock_irqrestore(&priv->sta_lock, flags);
+	if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
+		IWL_DEBUG_ASSOC(priv,
+				"STA id %u addr %pM already present in uCode (according to driver)\n",
+				sta_id, priv->stations[sta_id].sta.sta.addr);
+	} else {
+		priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
+		IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
+				sta_id, priv->stations[sta_id].sta.sta.addr);
+	}
 }
 
-static void iwl_add_sta_callback(struct iwl_priv *priv,
-				 struct iwl_device_cmd *cmd,
-				 struct iwl_rx_packet *pkt)
+static void iwl_process_add_sta_resp(struct iwl_priv *priv,
+				     struct iwl_addsta_cmd *addsta,
+				     struct iwl_rx_packet *pkt,
+				     bool sync)
 {
-	struct iwl_addsta_cmd *addsta =
-		(struct iwl_addsta_cmd *)cmd->cmd.payload;
 	u8 sta_id = addsta->sta.sta_id;
+	unsigned long flags;
 
 	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-			  pkt->hdr.flags);
+			pkt->hdr.flags);
 		return;
 	}
 
+	IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
+		       sta_id);
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+
 	switch (pkt->u.add_sta.status) {
 	case ADD_STA_SUCCESS_MSK:
+		IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
 		iwl_sta_ucode_activate(priv, sta_id);
-		 /* fall through */
+		break;
+	case ADD_STA_NO_ROOM_IN_TABLE:
+		IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
+			sta_id);
+		break;
+	case ADD_STA_NO_BLOCK_ACK_RESOURCE:
+		IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
+			sta_id);
+		break;
+	case ADD_STA_MODIFY_NON_EXIST_STA:
+		IWL_ERR(priv, "Attempting to modify non-existing station %d \n",
+			sta_id);
+		break;
 	default:
-		IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
-			     pkt->u.add_sta.status);
+		IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
+				pkt->u.add_sta.status);
 		break;
 	}
+
+	IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
+		       priv->stations[sta_id].sta.mode ==
+		       STA_CONTROL_MODIFY_MSK ?  "Modified" : "Added",
+		       sta_id, priv->stations[sta_id].sta.sta.addr);
+
+	/*
+	 * XXX: The MAC address in the command buffer is often changed from
+	 * the original sent to the device. That is, the MAC address
+	 * written to the command buffer often is not the same MAC adress
+	 * read from the command buffer when the command returns. This
+	 * issue has not yet been resolved and this debugging is left to
+	 * observe the problem.
+	 */
+	IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
+		       priv->stations[sta_id].sta.mode ==
+		       STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
+		       addsta->sta.addr);
+
+	/*
+	 * Determine if we wanted to modify or add a station,
+	 * if adding a station succeeded we have some more initialization
+	 * to do when using station notification. TODO
+	 */
+
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+}
+
+static void iwl_add_sta_callback(struct iwl_priv *priv,
+				 struct iwl_device_cmd *cmd,
+				 struct iwl_rx_packet *pkt)
+{
+	struct iwl_addsta_cmd *addsta =
+		(struct iwl_addsta_cmd *)cmd->cmd.payload;
+
+	iwl_process_add_sta_resp(priv, addsta, pkt, false);
+
 }
 
 int iwl_send_add_sta(struct iwl_priv *priv,
@@ -145,24 +202,9 @@ int iwl_send_add_sta(struct iwl_priv *priv,
 	if (ret || (flags & CMD_ASYNC))
 		return ret;
 
-	pkt = (struct iwl_rx_packet *)cmd.reply_page;
-	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
-		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-			  pkt->hdr.flags);
-		ret = -EIO;
-	}
-
 	if (ret == 0) {
-		switch (pkt->u.add_sta.status) {
-		case ADD_STA_SUCCESS_MSK:
-			iwl_sta_ucode_activate(priv, sta->sta.sta_id);
-			IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
-			break;
-		default:
-			ret = -EIO;
-			IWL_WARN(priv, "REPLY_ADD_STA failed\n");
-			break;
-		}
+		pkt = (struct iwl_rx_packet *)cmd.reply_page;
+		iwl_process_add_sta_resp(priv, sta, pkt, true);
 	}
 	iwl_free_pages(priv, cmd.reply_page);
 
@@ -1003,24 +1045,19 @@ int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
 	struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
 	u8 sta_id;
 
-	/* Add station to device's station table */
-
 	/*
-	 * XXX: This check is definitely not correct, if we're an AP
-	 *	it'll always be false which is not what we want, but
-	 *	it doesn't look like iwlagn is prepared to be an HT
-	 *	AP anyway.
+	 * Set HT capabilities. It is ok to set this struct even if not using
+	 * HT config: the priv->current_ht_config.is_ht flag will just be false
 	 */
-	if (priv->current_ht_config.is_ht) {
-		rcu_read_lock();
-		sta = ieee80211_find_sta(priv->vif, addr);
-		if (sta) {
-			memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
-			cur_ht_config = &ht_config;
-		}
-		rcu_read_unlock();
+	rcu_read_lock();
+	sta = ieee80211_find_sta(priv->vif, addr);
+	if (sta) {
+		memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
+		cur_ht_config = &ht_config;
 	}
+	rcu_read_unlock();
 
+	/* Add station to device's station table */
 	sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
 
 	/* Set up default rate scaling table in device's station table */
@@ -1085,6 +1122,7 @@ static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
  */
 void iwl_add_bcast_station(struct iwl_priv *priv)
 {
+	IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
 	iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
 
 	/* Set up default rate scaling table in device's station table */
@@ -1093,6 +1131,16 @@ void iwl_add_bcast_station(struct iwl_priv *priv)
 EXPORT_SYMBOL(iwl_add_bcast_station);
 
 /**
+ * iwl3945_add_bcast_station - add broadcast station into station table.
+ */
+void iwl3945_add_bcast_station(struct iwl_priv *priv)
+{
+	IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
+	iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
+}
+EXPORT_SYMBOL(iwl3945_add_bcast_station);
+
+/**
  * iwl_get_sta_id - Find station's index within station table
  *
  * If new IBSS station, create new entry in station table