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-rw-r--r--drivers/net/wireless/mwifiex/init.c103
-rw-r--r--drivers/net/wireless/mwifiex/main.c3
-rw-r--r--drivers/net/wireless/mwifiex/main.h3
3 files changed, 64 insertions, 45 deletions
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 21fdc6c..81fc8ed 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -64,60 +64,72 @@ static void scan_delay_timer_fn(unsigned long data)
struct cmd_ctrl_node *cmd_node, *tmp_node;
unsigned long flags;
- if (!mwifiex_wmm_lists_empty(adapter)) {
- if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) {
+ if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) {
+ /*
+ * Abort scan operation by cancelling all pending scan
+ * commands
+ */
+ spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
+ list_for_each_entry_safe(cmd_node, tmp_node,
+ &adapter->scan_pending_q, list) {
+ list_del(&cmd_node->list);
+ cmd_node->wait_q_enabled = false;
+ mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
+ }
+ spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
+
+ spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
+ adapter->scan_processing = false;
+ adapter->scan_delay_cnt = 0;
+ adapter->empty_tx_q_cnt = 0;
+ spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
+
+ if (priv->user_scan_cfg) {
+ dev_dbg(priv->adapter->dev,
+ "info: %s: scan aborted\n", __func__);
+ cfg80211_scan_done(priv->scan_request, 1);
+ priv->scan_request = NULL;
+ kfree(priv->user_scan_cfg);
+ priv->user_scan_cfg = NULL;
+ }
+ goto done;
+ }
+
+ if (!atomic_read(&priv->adapter->is_tx_received)) {
+ adapter->empty_tx_q_cnt++;
+ if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
/*
- * Abort scan operation by cancelling all pending scan
- * command
+ * No Tx traffic for 200msec. Get scan command from
+ * scan pending queue and put to cmd pending queue to
+ * resume scan operation
*/
+ adapter->scan_delay_cnt = 0;
+ adapter->empty_tx_q_cnt = 0;
spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
- list_for_each_entry_safe(cmd_node, tmp_node,
- &adapter->scan_pending_q,
- list) {
- list_del(&cmd_node->list);
- cmd_node->wait_q_enabled = false;
- mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
- }
+ cmd_node = list_first_entry(&adapter->scan_pending_q,
+ struct cmd_ctrl_node, list);
+ list_del(&cmd_node->list);
spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
flags);
- spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
- adapter->scan_processing = false;
- spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock,
- flags);
-
- if (priv->user_scan_cfg) {
- dev_dbg(priv->adapter->dev,
- "info: %s: scan aborted\n", __func__);
- cfg80211_scan_done(priv->scan_request, 1);
- priv->scan_request = NULL;
- kfree(priv->user_scan_cfg);
- priv->user_scan_cfg = NULL;
- }
- } else {
- /*
- * Tx data queue is still not empty, delay scan
- * operation further by 20msec.
- */
- mod_timer(&priv->scan_delay_timer, jiffies +
- msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
- adapter->scan_delay_cnt++;
+ mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
+ true);
+ goto done;
}
- queue_work(priv->adapter->workqueue, &priv->adapter->main_work);
} else {
- /*
- * Tx data queue is empty. Get scan command from scan_pending_q
- * and put to cmd_pending_q to resume scan operation
- */
- adapter->scan_delay_cnt = 0;
- spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
- cmd_node = list_first_entry(&adapter->scan_pending_q,
- struct cmd_ctrl_node, list);
- list_del(&cmd_node->list);
- spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
-
- mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
+ adapter->empty_tx_q_cnt = 0;
}
+
+ /* Delay scan operation further by 20msec */
+ mod_timer(&priv->scan_delay_timer, jiffies +
+ msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
+ adapter->scan_delay_cnt++;
+
+done:
+ if (atomic_read(&priv->adapter->is_tx_received))
+ atomic_set(&priv->adapter->is_tx_received, false);
+
+ return;
}
/*
@@ -345,6 +357,7 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
adapter->arp_filter_size = 0;
adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
+ adapter->empty_tx_q_cnt = 0;
}
/*
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 4680362..cb11552 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -520,6 +520,9 @@ mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
mwifiex_wmm_add_buf_txqueue(priv, skb);
atomic_inc(&priv->adapter->tx_pending);
+ if (priv->adapter->scan_delay_cnt)
+ atomic_set(&priv->adapter->is_tx_received, true);
+
if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) {
mwifiex_set_trans_start(dev);
mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index e7c2a82..16f046a 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -88,6 +88,7 @@ enum {
#define MWIFIEX_MAX_TOTAL_SCAN_TIME (MWIFIEX_TIMER_10S - MWIFIEX_TIMER_1S)
#define MWIFIEX_MAX_SCAN_DELAY_CNT 50
+#define MWIFIEX_MAX_EMPTY_TX_Q_CNT 10
#define MWIFIEX_SCAN_DELAY_MSEC 20
#define RSN_GTK_OUI_OFFSET 2
@@ -690,6 +691,8 @@ struct mwifiex_adapter {
u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
u16 max_mgmt_ie_index;
u8 scan_delay_cnt;
+ u8 empty_tx_q_cnt;
+ atomic_t is_tx_received;
};
int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);
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