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authorAvinash Patil <patila@marvell.com>2012-11-02 02:44:16 +0100
committerJohn W. Linville <linville@tuxdriver.com>2012-11-14 20:55:37 +0100
commit47411a06c0c44b3c9dc2feffb0d97785ec9aaa68 (patch)
tree4464ca983493e93fb688eb471d7c28ec0be78fa6 /drivers/net/wireless/mwifiex/txrx.c
parentmwifiex: add support for SDIO card reset (diff)
downloadlinux-47411a06c0c44b3c9dc2feffb0d97785ec9aaa68.tar.xz
linux-47411a06c0c44b3c9dc2feffb0d97785ec9aaa68.zip
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>
Diffstat (limited to 'drivers/net/wireless/mwifiex/txrx.c')
-rw-r--r--drivers/net/wireless/mwifiex/txrx.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c
index 5cb3f7af8749..8c80024c30ff 100644
--- a/drivers/net/wireless/mwifiex/txrx.c
+++ b/drivers/net/wireless/mwifiex/txrx.c
@@ -121,13 +121,13 @@ int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
dev_err(adapter->dev, "mwifiex_write_data_async failed: 0x%X\n",
ret);
adapter->dbg.num_tx_host_to_card_failure++;
- mwifiex_write_data_complete(adapter, skb, ret);
+ mwifiex_write_data_complete(adapter, skb, 0, ret);
break;
case -EINPROGRESS:
adapter->data_sent = false;
break;
case 0:
- mwifiex_write_data_complete(adapter, skb, ret);
+ mwifiex_write_data_complete(adapter, skb, 0, ret);
break;
default:
break;
@@ -144,11 +144,12 @@ int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
* wakes up stalled traffic queue if required, and then frees the buffer.
*/
int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
- struct sk_buff *skb, int status)
+ struct sk_buff *skb, int aggr, int status)
{
- struct mwifiex_private *priv, *tpriv;
+ struct mwifiex_private *priv;
struct mwifiex_txinfo *tx_info;
- int i;
+ struct netdev_queue *txq;
+ int index;
if (!skb)
return 0;
@@ -172,15 +173,20 @@ int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
if (tx_info->flags & MWIFIEX_BUF_FLAG_BRIDGED_PKT)
atomic_dec_return(&adapter->pending_bridged_pkts);
- if (atomic_dec_return(&adapter->tx_pending) >= LOW_TX_PENDING)
+
+ if (aggr)
+ /* For skb_aggr, do not wake up tx queue */
goto done;
- for (i = 0; i < adapter->priv_num; i++) {
- tpriv = adapter->priv[i];
+ atomic_dec(&adapter->tx_pending);
- if (tpriv->media_connected &&
- netif_queue_stopped(tpriv->netdev))
- mwifiex_wake_up_net_dev_queue(tpriv->netdev, adapter);
+ index = mwifiex_1d_to_wmm_queue[skb->priority];
+ if (atomic_dec_return(&priv->wmm_tx_pending[index]) < LOW_TX_PENDING) {
+ txq = netdev_get_tx_queue(priv->netdev, index);
+ if (netif_tx_queue_stopped(txq)) {
+ netif_tx_wake_queue(txq);
+ dev_dbg(adapter->dev, "wake queue: %d\n", index);
+ }
}
done:
dev_kfree_skb_any(skb);