1 files changed, 62 insertions, 78 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index a709d05c586..cb8eacd5fdb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -222,13 +222,8 @@ void iwlagn_tx_queue_set_status(struct iwl_priv *priv,
 		       scd_retry ? "BA" : "AC/CMD", txq_id, tx_fifo_id);
 }
 
-int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id,
-			  int tx_fifo, int sta_id, int tid, u16 ssn_idx)
+static int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id, int sta_id, int tid)
 {
-	unsigned long flags;
-	u16 ra_tid;
-	int ret;
-
 	if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) ||
 	    (IWLAGN_FIRST_AMPDU_QUEUE +
 		priv->cfg->base_params->num_of_ampdu_queues <= txq_id)) {
@@ -240,12 +235,33 @@ int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id,
 		return -EINVAL;
 	}
 
-	ra_tid = BUILD_RAxTID(sta_id, tid);
-
 	/* Modify device's station table to Tx this TID */
-	ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
-	if (ret)
-		return ret;
+	return iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
+}
+
+void iwlagn_txq_agg_queue_setup(struct iwl_priv *priv,
+				struct ieee80211_sta *sta,
+				int tid, int frame_limit)
+{
+	int sta_id, tx_fifo, txq_id, ssn_idx;
+	u16 ra_tid;
+	unsigned long flags;
+	struct iwl_tid_data *tid_data;
+
+	sta_id = iwl_sta_id(sta);
+	if (WARN_ON(sta_id == IWL_INVALID_STATION))
+		return;
+	if (WARN_ON(tid >= MAX_TID_COUNT))
+		return;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	tid_data = &priv->stations[sta_id].tid[tid];
+	ssn_idx = SEQ_TO_SN(tid_data->seq_number);
+	txq_id = tid_data->agg.txq_id;
+	tx_fifo = tid_data->agg.tx_fifo;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	ra_tid = BUILD_RAxTID(sta_id, tid);
 
 	spin_lock_irqsave(&priv->lock, flags);
 
@@ -271,10 +287,10 @@ int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id,
 	iwl_write_targ_mem(priv, priv->scd_base_addr +
 			IWLAGN_SCD_CONTEXT_QUEUE_OFFSET(txq_id) +
 			sizeof(u32),
-			((SCD_WIN_SIZE <<
+			((frame_limit <<
 			IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) &
 			IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) |
-			((SCD_FRAME_LIMIT <<
+			((frame_limit <<
 			IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 			IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK));
 
@@ -284,12 +300,10 @@ int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id,
 	iwlagn_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
 
 	spin_unlock_irqrestore(&priv->lock, flags);
-
-	return 0;
 }
 
-int iwlagn_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
-			   u16 ssn_idx, u8 tx_fifo)
+static int iwlagn_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
+				  u16 ssn_idx, u8 tx_fifo)
 {
 	if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) ||
 	    (IWLAGN_FIRST_AMPDU_QUEUE +
@@ -1034,11 +1048,11 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
 	tid_data = &priv->stations[sta_id].tid[tid];
 	*ssn = SEQ_TO_SN(tid_data->seq_number);
 	tid_data->agg.txq_id = txq_id;
+	tid_data->agg.tx_fifo = tx_fifo;
 	iwl_set_swq_id(&priv->txq[txq_id], get_ac_from_tid(tid), txq_id);
 	spin_unlock_irqrestore(&priv->sta_lock, flags);
 
-	ret = priv->cfg->ops->lib->txq_agg_enable(priv, txq_id, tx_fifo,
-						  sta_id, tid, *ssn);
+	ret = iwlagn_txq_agg_enable(priv, txq_id, sta_id, tid);
 	if (ret)
 		return ret;
 
@@ -1125,8 +1139,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
 	 * to deactivate the uCode queue, just return "success" to allow
 	 *  mac80211 to clean up it own data.
 	 */
-	priv->cfg->ops->lib->txq_agg_disable(priv, txq_id, ssn,
-						   tx_fifo_id);
+	iwlagn_txq_agg_disable(priv, txq_id, ssn, tx_fifo_id);
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
@@ -1155,8 +1168,7 @@ int iwlagn_txq_check_empty(struct iwl_priv *priv,
 			u16 ssn = SEQ_TO_SN(tid_data->seq_number);
 			int tx_fifo = get_fifo_from_tid(ctx, tid);
 			IWL_DEBUG_HT(priv, "HW queue empty: continue DELBA flow\n");
-			priv->cfg->ops->lib->txq_agg_disable(priv, txq_id,
-							     ssn, tx_fifo);
+			iwlagn_txq_agg_disable(priv, txq_id, ssn, tx_fifo);
 			tid_data->agg.state = IWL_AGG_OFF;
 			ieee80211_stop_tx_ba_cb_irqsafe(ctx->vif, addr, tid);
 		}
@@ -1251,11 +1263,11 @@ static int iwlagn_tx_status_reply_compressed_ba(struct iwl_priv *priv,
 				 struct iwl_compressed_ba_resp *ba_resp)
 
 {
-	int i, sh, ack;
+	int sh;
 	u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl);
 	u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
-	int successes = 0;
 	struct ieee80211_tx_info *info;
+	u64 bitmap, sent_bitmap;
 
 	if (unlikely(!agg->wait_for_ba))  {
 		if (unlikely(ba_resp->bitmap))
@@ -1269,70 +1281,42 @@ static int iwlagn_tx_status_reply_compressed_ba(struct iwl_priv *priv,
 
 	/* Calculate shift to align block-ack bits with our Tx window bits */
 	sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl >> 4);
-	if (sh < 0) /* tbw something is wrong with indices */
+	if (sh < 0)
 		sh += 0x100;
 
-	if (agg->frame_count > (64 - sh)) {
-		IWL_DEBUG_TX_REPLY(priv, "more frames than bitmap size");
-		return -1;
-	}
-	if (!priv->cfg->base_params->no_agg_framecnt_info && ba_resp->txed) {
+	/*
+	 * Check for success or failure according to the
+	 * transmitted bitmap and block-ack bitmap
+	 */
+	bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
+	sent_bitmap = bitmap & agg->bitmap;
+
+	/* Sanity check values reported by uCode */
+	if (ba_resp->txed_2_done > ba_resp->txed) {
+		IWL_DEBUG_TX_REPLY(priv,
+			"bogus sent(%d) and ack(%d) count\n",
+			ba_resp->txed, ba_resp->txed_2_done);
 		/*
-		 * sent and ack information provided by uCode
-		 * use it instead of figure out ourself
+		 * set txed_2_done = txed,
+		 * so it won't impact rate scale
 		 */
-		if (ba_resp->txed_2_done > ba_resp->txed) {
-			IWL_DEBUG_TX_REPLY(priv,
-				"bogus sent(%d) and ack(%d) count\n",
-				ba_resp->txed, ba_resp->txed_2_done);
-			/*
-			 * set txed_2_done = txed,
-			 * so it won't impact rate scale
-			 */
-			ba_resp->txed = ba_resp->txed_2_done;
-		}
-		IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n",
-				ba_resp->txed, ba_resp->txed_2_done);
-	} else {
-		u64 bitmap, sent_bitmap;
-
-		/* don't use 64-bit values for now */
-		bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
-
-		/* check for success or failure according to the
-		 * transmitted bitmap and block-ack bitmap */
-		sent_bitmap = bitmap & agg->bitmap;
-
-		/* For each frame attempted in aggregation,
-		 * update driver's record of tx frame's status. */
-		i = 0;
-		while (sent_bitmap) {
-			ack = sent_bitmap & 1ULL;
-			successes += ack;
-			IWL_DEBUG_TX_REPLY(priv, "%s ON i=%d idx=%d raw=%d\n",
-				ack ? "ACK" : "NACK", i,
-				(agg->start_idx + i) & 0xff,
-				agg->start_idx + i);
-			sent_bitmap >>= 1;
-			++i;
-		}
+		ba_resp->txed = ba_resp->txed_2_done;
+	}
+	IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n",
+			ba_resp->txed, ba_resp->txed_2_done);
 
-		IWL_DEBUG_TX_REPLY(priv, "Bitmap %llx\n",
-				   (unsigned long long)bitmap);
+	/* Find the first ACKed frame to store the TX status */
+	while (sent_bitmap && !(sent_bitmap & 1)) {
+		agg->start_idx = (agg->start_idx + 1) & 0xff;
+		sent_bitmap >>= 1;
 	}
 
 	info = IEEE80211_SKB_CB(priv->txq[scd_flow].txb[agg->start_idx].skb);
 	memset(&info->status, 0, sizeof(info->status));
 	info->flags |= IEEE80211_TX_STAT_ACK;
 	info->flags |= IEEE80211_TX_STAT_AMPDU;
-	if (!priv->cfg->base_params->no_agg_framecnt_info && ba_resp->txed) {
-		info->status.ampdu_ack_len = ba_resp->txed_2_done;
-		info->status.ampdu_len = ba_resp->txed;
-
-	} else {
-		info->status.ampdu_ack_len = successes;
-		info->status.ampdu_len = agg->frame_count;
-	}
+	info->status.ampdu_ack_len = ba_resp->txed_2_done;
+	info->status.ampdu_len = ba_resp->txed;
 	iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, info);
 
 	return 0;