Speed optimizations:

linux_kernel_modules/mt7697q/interrupt.c

@@ -38,7 +38,7 @@ int mt7697_irq_run(struct mt7697q_info *qinfo)
 
 	if (s2m_mbox) {
 		if (!queue_delayed_work(qinfo->irq_workq, 
-			&qinfo->irq_delayed_work, usecs_to_jiffies(100))) {
+			&qinfo->irq_delayed_work, usecs_to_jiffies(10))) {
 			dev_err(qinfo->dev, 
 				"%s(): queue_delayed_work() failed\n", 
 				__func__);

linux_kernel_modules/mt7697q/io.c

@@ -242,13 +242,6 @@ int mt7697io_wr(struct mt7697q_info *qinfo, u32 addr, const u32 *data, size_t nu
 
     	WARN_ON(num == 0);
 
-	ret = mt7697io_slave_wait(qinfo);
-	if (ret < 0) {
-		dev_err(qinfo->dev, "%s(): mt7697io_slave_wait() failed(%d)\n", 
-			__func__, ret);
-       		goto cleanup;
-    	}
-
     	ret = mt7697io_write32(qinfo, MT7697_IO_SLAVE_REG_BUS_ADDR_LOW, addr);
     	if (ret < 0) {
 		dev_err(qinfo->dev, "%s(): mt7697io_write32() failed(%d)\n", 
@@ -278,14 +271,6 @@ int mt7697io_wr(struct mt7697q_info *qinfo, u32 addr, const u32 *data, size_t nu
 				__func__, ret);
        			goto cleanup;
     		}
-
-		ret = mt7697io_slave_wait(qinfo);
-		if (ret < 0) {
-			dev_err(qinfo->dev, 
-				"%s(): mt7697io_slave_wait() failed(%d)\n", 
-				__func__, ret);
-       			goto cleanup;
-    		}
     	}
 
 cleanup:
@@ -299,13 +284,6 @@ int mt7697io_rd(struct mt7697q_info *qinfo, u32 addr, u32 *data, size_t num)
 
     	WARN_ON(num == 0);    
 
-	ret = mt7697io_slave_wait(qinfo);
-	if (ret < 0) {
-		dev_err(qinfo->dev, "%s(): mt7697io_slave_wait() failed(%d)\n", 
-			__func__, ret);
-       		goto cleanup;
-    	}
-
     	ret = mt7697io_write32(qinfo, MT7697_IO_SLAVE_REG_BUS_ADDR_LOW, addr);
 	if (ret < 0) {
 		dev_err(qinfo->dev, "%s(): mt7697io_write32() failed(%d)\n", 

linux_kernel_modules/mt7697wifi/cfg80211.c

@@ -1189,6 +1189,8 @@ struct wireless_dev* mt7697_interface_add(struct mt7697_cfg80211_info *cfg,
 		INIT_LIST_HEAD(&vif->sta_list);
 		vif->sta_max = MT7697_MAX_STA;
 
+//		INIT_LIST_HEAD(&vif->rx_pkt_list);
+
 		ndev->addr_assign_type = NET_ADDR_PERM;
 		ndev->addr_len = ETH_ALEN;
 		ndev->dev_addr = cfg->mac_addr.addr;

linux_kernel_modules/mt7697wifi/core.h

@@ -38,6 +38,7 @@
 #define MT7697_MAX_MC_FILTERS_PER_LIST 	7
 #define MT7697_MAX_COOKIE_NUM		180
 #define MT7697_TX_TIMEOUT      		10
+#define MT7697_TX_PKT_POOL_LEN		64
 /* TODO update below */
 #define MT7697_DISCON_TIMER_INTVAL_MSEC (300 * 1000)
 
@@ -78,9 +79,9 @@ enum mt7697_vif_state {
         SCHED_SCANNING,
 };
 
-struct mt7697_cookie {
+struct mt7697_tx_pkt {
 	struct sk_buff *skb;
-	struct mt7697_cookie *arc_list_next;
+	struct list_head next;
 };
 
 struct mt7697_cfg80211_info {
@@ -96,13 +97,14 @@ struct mt7697_cfg80211_info {
 
 	struct work_struct init_work;
 
-	struct mt7697_cookie *cookie_list;
-	u32 cookie_count;
-	struct mt7697_cookie cookie_mem[MT7697_MAX_COOKIE_NUM];
-
+	atomic_t tx_skb_pool_idx;
+	struct mt7697_tx_pkt tx_skb_pool[MT7697_TX_PKT_POOL_LEN];
+	struct sk_buff_head tx_skb_queue;
+	struct list_head tx_skb_list;
 	struct workqueue_struct *tx_workq;
 	struct work_struct tx_work;
 	struct mt7697_tx_raw_packet tx_req;
+
 	u8 rx_data[LEN32_ALIGNED(IEEE80211_MAX_FRAME_LEN)];
 	u8 probe_data[LEN32_ALIGNED(IEEE80211_MAX_DATA_LEN)];
 	
@@ -220,7 +222,4 @@ int mt7697_proc_80211cmd(const struct mt7697q_rsp_hdr*, void*);
 void mt7697_disconnect_timer_hndlr(unsigned long);
 int mt7697_disconnect(struct mt7697_vif*);
 
-struct mt7697_cookie *mt7697_alloc_cookie(struct mt7697_cfg80211_info*);
-void mt7697_free_cookie(struct mt7697_cfg80211_info*, struct mt7697_cookie*);
-
 #endif

linux_kernel_modules/mt7697wifi/main.c

@@ -188,25 +188,6 @@ static const struct mt7697q_if_ops if_ops = {
 	.write		= mt7697q_write,
 };
 
-static void mt7697_cookie_init(struct mt7697_cfg80211_info *cfg)
-{
-	u32 i;
-
-	cfg->cookie_list = NULL;
-	cfg->cookie_count = 0;
-
-	memset(cfg->cookie_mem, 0, sizeof(cfg->cookie_mem));
-
-	for (i = 0; i < MT7697_MAX_COOKIE_NUM; i++)
-		mt7697_free_cookie(cfg, &cfg->cookie_mem[i]);
-}
-
-static void mt7697_cookie_cleanup(struct mt7697_cfg80211_info *cfg)
-{
-	cfg->cookie_list = NULL;
-	cfg->cookie_count = 0;
-}
-
 static int mt7697_probe(struct platform_device *pdev)
 {	
 	struct wiphy *wiphy;
@@ -224,10 +205,10 @@ static int mt7697_probe(struct platform_device *pdev)
         }
 
 	sema_init(&cfg->sem, 1);
-	cfg->tx_workq = create_singlethread_workqueue(DRVNAME);
+	cfg->tx_workq = create_workqueue(DRVNAME);
 	if (!cfg->tx_workq) {
                 dev_err(&pdev->dev, 
-			"%s(): mt7697_cfg80211_create() failed()\n",
+			"%s(): create_workqueue() failed()\n",
 			__func__);
 		err = -ENOMEM;
 		goto failed;
@@ -239,9 +220,13 @@ static int mt7697_probe(struct platform_device *pdev)
 	spin_lock_init(&cfg->vif_list_lock);
 	INIT_LIST_HEAD(&cfg->vif_list);
 
+	INIT_LIST_HEAD(&cfg->tx_skb_list);
+	atomic_set(&cfg->tx_skb_pool_idx, 0);
+	memset(cfg->tx_skb_pool, 0, sizeof(cfg->tx_skb_pool));
+
 	cfg->hif_ops = &if_ops;
 	cfg->dev = &pdev->dev;
-	mt7697_cookie_init(cfg);
+	skb_queue_head_init(&cfg->tx_skb_queue);
 
 	cfg->vif_start = itf_idx_start;
 	cfg->vif_max = MT7697_MAX_STA;
@@ -270,7 +255,6 @@ static int mt7697_remove(struct platform_device *pdev)
 {
 	struct mt7697_cfg80211_info *cfg = platform_get_drvdata(pdev);
 
-	mt7697_cookie_cleanup(cfg);
 	mt7697_cfg80211_cleanup(cfg);
 	mt7697_cfg80211_destroy(cfg);
 	pr_info(DRVNAME" %s(): removed.\n", __func__);
@@ -435,32 +419,6 @@ cleanup:
 	return ret;
 }
 
-struct mt7697_cookie *mt7697_alloc_cookie(struct mt7697_cfg80211_info *cfg)
-{
-	struct mt7697_cookie *cookie;
-
-	cookie = cfg->cookie_list;
-	if (cookie != NULL) {
-		cfg->cookie_list = cookie->arc_list_next;
-		cfg->cookie_count--;
-	}
-
-	return cookie;
-}
-
-void mt7697_free_cookie(struct mt7697_cfg80211_info *cfg, 
-                        struct mt7697_cookie *cookie)
-{
-	/* Insert first */
-	if (!cfg || !cookie)
-		return;
-
-	cookie->skb = NULL;
-	cookie->arc_list_next = cfg->cookie_list;
-	cfg->cookie_list = cookie;
-	cfg->cookie_count++;
-}
-
 MODULE_AUTHOR("Sierra Wireless Corporation");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("MediaTek7697 WiFi 80211");

linux_kernel_modules/mt7697wifi/txrx.c

@@ -22,12 +22,10 @@ int mt7697_data_tx(struct sk_buff *skb, struct net_device *ndev)
 {
 	struct mt7697_cfg80211_info *cfg = mt7697_priv(ndev);
 	struct mt7697_vif *vif = netdev_priv(ndev);
-	struct mt7697_cookie *cookie;
+	struct mt7697_tx_pkt *tx_skb;
 	int ret = 0;
 
-	dev_dbg(cfg->dev, 
-		"%s(): tx cookie cnt(%u) skb(0x%p), data(0x%p), len(%u)\n", 
-		__func__, cfg->cookie_count, skb, skb->data, skb->len);
+	dev_dbg(cfg->dev, "%s(): tx len(%u)\n", __func__, skb->len);
 
 	if (!test_bit(CONNECTED, &vif->flags)) {
 		dev_warn(cfg->dev, "%s(): interface not associated\n", 
@@ -49,15 +47,22 @@ int mt7697_data_tx(struct sk_buff *skb, struct net_device *ndev)
 		}
 	}
 
-	cookie = mt7697_alloc_cookie(cfg);
-	if (cookie == NULL) {
-		ret = -ENOMEM;
+	tx_skb = &cfg->tx_skb_pool[atomic_read(&cfg->tx_skb_pool_idx)];
+	if (tx_skb->skb) {
+		dev_warn(cfg->dev, "%s(): tx pool full\n", 
+			__func__);
+		ret = -EAGAIN;
 		goto cleanup;
-	}
+ 	}
 
-	dev_dbg(cfg->dev, "%s(): tx cookie/cnt(0x%p/%u)\n", 
-		__func__, cookie, cfg->cookie_count);
-	cookie->skb = skb;
+	tx_skb->skb = skb;
+	dev_dbg(cfg->dev, "%s(): tx pkt(%u/%p)\n", 
+		__func__, atomic_read(&cfg->tx_skb_pool_idx), tx_skb->skb);
+
+	atomic_inc(&cfg->tx_skb_pool_idx);
+	if (atomic_read(&cfg->tx_skb_pool_idx) >= MT7697_TX_PKT_POOL_LEN) 
+		atomic_set(&cfg->tx_skb_pool_idx, 0);
+	list_add_tail(&tx_skb->next, &cfg->tx_skb_list);
 
 	ret = queue_work(cfg->tx_workq, &cfg->tx_work);
 	if (ret < 0) {
@@ -80,35 +85,26 @@ void mt7697_tx_work(struct work_struct *work)
 {
         struct mt7697_cfg80211_info *cfg = container_of(work, 
 		struct mt7697_cfg80211_info, tx_work);
-	struct sk_buff_head skb_queue;
+	struct mt7697_tx_pkt *tx_pkt, *tx_pkt_next = NULL;
 	struct ieee80211_hdr *hdr;
 	int ret;
 
-	skb_queue_head_init(&skb_queue);
-
-	dev_dbg(cfg->dev, "%s(): tx cookie cnt(%u)\n", 
-		__func__, cfg->cookie_count);
-	while (cfg->cookie_count < MT7697_MAX_COOKIE_NUM) {
-		struct mt7697_vif *vif;
-		struct mt7697_cookie *cookie = &cfg->cookie_mem[cfg->cookie_count];
-		if (!cookie->skb)
-			break;
-
-		vif = netdev_priv(cookie->skb->dev);
+	list_for_each_entry_safe(tx_pkt, tx_pkt_next, &cfg->tx_skb_list, next) {
+		struct mt7697_vif *vif = netdev_priv(tx_pkt->skb->dev);
 		WARN_ON(!vif);
 
        		/* validate length for ether packet */
-        	if (cookie->skb->len < sizeof(*hdr)) {
+        	if (tx_pkt->skb->len < sizeof(*hdr)) {
 			dev_err(cfg->dev, "%s(): invalid skb len(%u < %u)\n", 
-				__func__, cookie->skb->len, sizeof(*hdr));
+				__func__, tx_pkt->skb->len, sizeof(*hdr));
 
 			vif->net_stats.tx_errors++;
                 	ret = -EINVAL;
                 	goto cleanup;
         	}
 
-		ret = mt7697_wr_tx_raw_packet(cfg, cookie->skb->data, 
-			cookie->skb->len);
+		ret = mt7697_wr_tx_raw_packet(cfg, tx_pkt->skb->data, 
+			tx_pkt->skb->len);
 		if (ret < 0) {
 			dev_err(cfg->dev, 
 				"%s(): mt7697_wr_tx_raw_packet() failed(%d)\n", 
@@ -117,19 +113,16 @@ void mt7697_tx_work(struct work_struct *work)
 			goto cleanup;
 		}
 
+		dev_dbg(cfg->dev, "%s(): tx complete pkt(%p)\n", __func__, tx_pkt->skb);
 		vif->net_stats.tx_packets++;
-		vif->net_stats.tx_bytes += cookie->skb->len;
-
-		__skb_queue_tail(&skb_queue, cookie->skb);
-		mt7697_free_cookie(cfg, cookie);
+		vif->net_stats.tx_bytes += tx_pkt->skb->len;
+		list_del(&tx_pkt->next);
 
-		dev_dbg(cfg->dev, "%s(): tx cookie cnt(%u)\n", 
-			__func__, cfg->cookie_count);
-		if (cfg->cookie_count < MT7697_MAX_COOKIE_NUM) 
-			cookie = &cfg->cookie_mem[cfg->cookie_count];
+		__skb_queue_tail(&cfg->tx_skb_queue, tx_pkt->skb);
+		tx_pkt->skb = NULL;
 	}
 
-	__skb_queue_purge(&skb_queue);
+	__skb_queue_purge(&cfg->tx_skb_queue);
 
 cleanup:
 	return;
@@ -180,6 +173,7 @@ int mt7697_rx_data(struct mt7697_cfg80211_info *cfg, u32 len, u32 if_idx)
 	vif->net_stats.rx_bytes += len;
 
 	skb->protocol = eth_type_trans(skb, skb->dev);
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
 	dev_dbg(cfg->dev, "%s(): rx frame protocol(%u) type(%u)\n", 
 		__func__, skb->protocol, skb->pkt_type);
 

linux_kernel_modules/mt7697wifi/wmi.c

@@ -792,8 +792,8 @@ static int mt7697_rx_raw(const struct mt7697q_rsp_hdr* rsp,
        		goto cleanup;
     	}
 
-	print_hex_dump(KERN_DEBUG, DRVNAME" RX ", DUMP_PREFIX_OFFSET, 
-		16, 1, cfg->rx_data, rsp->result, 0);
+//	print_hex_dump(KERN_DEBUG, DRVNAME" RX ", DUMP_PREFIX_OFFSET, 
+//		16, 1, cfg->rx_data, rsp->result, 0);
 
 	if (list_empty(&cfg->vif_list)) {
 		dev_dbg(cfg->dev, "%s(): no interfaces\n", __func__);