mwifiex: add multi-queue support
This patch adds support for multiple TX queues inside mwifiex
driver. Four different queues according to WMM access categories
are defined for each virtual interface. When a packet is
received from netdev for transmission, tx pending count for
particular queue is incremented and if tx pending count has
reached upper water-mark, this queue is stopped instead of
stopping all queues. Similarly when a packet is successfully
transmitted from device, tx pending count is decremented per
queue and if pending count falls below lower water-mark, queue
operations are again resumed. This ensures that not all
tranmission is blocked if traffic with particular TOS value
suddenly increases.
Also wake all queues after association/IBSS_join/uAP_BSS_start
to enable traffic on all queues.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 482faac..39f03ce 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -388,9 +388,17 @@
struct mwifiex_adapter *adapter)
{
unsigned long dev_queue_flags;
+ unsigned int i;
spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
- netif_tx_wake_all_queues(netdev);
+
+ for (i = 0; i < netdev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
+
+ if (netif_tx_queue_stopped(txq))
+ netif_tx_wake_queue(txq);
+ }
+
spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
}
@@ -401,9 +409,17 @@
struct mwifiex_adapter *adapter)
{
unsigned long dev_queue_flags;
+ unsigned int i;
spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
- netif_tx_stop_all_queues(netdev);
+
+ for (i = 0; i < netdev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
+
+ if (!netif_tx_queue_stopped(txq))
+ netif_tx_stop_queue(txq);
+ }
+
spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
}