mwifiex: change default tx/rx win_size for BA setup

This patch fixes an issue where RX throughput values observed
were substantially lower than TX counterparts for PCIe8897 STA.
PCIe8897 supports larger rx_win_size. After changing these values
we see big improvement for TX and RX throughput values.

Different tx_win_size and rx_win_size are used for AP mode.

All BA setup related initialization has been moved to separate
function.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Sagar Bijwe <bsagar@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/11n.c

@@ -679,3 +679,25 @@ void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
 
 	return;
 }
+
+/* This function initializes the BlockACK setup information for given
+ * mwifiex_private structure.
+ */
+void mwifiex_set_ba_params(struct mwifiex_private *priv)
+{
+	priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
+
+	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
+		priv->add_ba_param.tx_win_size =
+						MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
+		priv->add_ba_param.rx_win_size =
+						MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
+	} else {
+		priv->add_ba_param.tx_win_size =
+						MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
+		priv->add_ba_param.rx_win_size =
+						MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
+	}
+
+	return;
+}

drivers/net/wireless/mwifiex/decl.h

@@ -41,8 +41,11 @@
 #define MWIFIEX_MAX_TX_BASTREAM_SUPPORTED	2
 #define MWIFIEX_MAX_RX_BASTREAM_SUPPORTED	16
 
-#define MWIFIEX_AMPDU_DEF_TXWINSIZE        32
-#define MWIFIEX_AMPDU_DEF_RXWINSIZE        16
+#define MWIFIEX_STA_AMPDU_DEF_TXWINSIZE        16
+#define MWIFIEX_STA_AMPDU_DEF_RXWINSIZE        32
+#define MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE        32
+#define MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE        16
+
 #define MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT  0xffff
 
 #define MWIFIEX_RATE_BITMAP_MCS0   32

drivers/net/wireless/mwifiex/main.h

@@ -924,6 +924,7 @@ void
 mwifiex_set_wmm_params(struct mwifiex_private *priv,
 		       struct mwifiex_uap_bss_param *bss_cfg,
 		       struct cfg80211_ap_settings *params);
+void mwifiex_set_ba_params(struct mwifiex_private *priv);
 
 /*
  * This function checks if the queuing is RA based or not.

drivers/net/wireless/mwifiex/wmm.c

@@ -436,10 +436,7 @@ mwifiex_wmm_init(struct mwifiex_adapter *adapter)
 					= priv->aggr_prio_tbl[7].ampdu_user
 					= BA_STREAM_NOT_ALLOWED;
 
-		priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
-		priv->add_ba_param.tx_win_size = MWIFIEX_AMPDU_DEF_TXWINSIZE;
-		priv->add_ba_param.rx_win_size = MWIFIEX_AMPDU_DEF_RXWINSIZE;
-
+		mwifiex_set_ba_params(priv);
 		mwifiex_reset_11n_rx_seq_num(priv);
 
 		atomic_set(&priv->wmm.tx_pkts_queued, 0);