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net: bcmgenet: manipulate netdev_queue directly

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Instead of always invoking netdev_get_tx_queue() in bcmgenet_xmit() and
bcmgenet_tx_reclaim(), just get the corresponding netdev_queue pointer
once and for all and manipulate it throughout bcmgenet_xmit() and
bcmgenet_tx_reclaim().

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-03-20 10:53:23 -07:00 committed by David S. Miller
parent d5c76f628d
commit b2cde2cc71
1 changed files with 8 additions and 4 deletions
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12
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -868,10 +868,12 @@ static void __bcmgenet_tx_reclaim(struct net_device *dev,
struct bcmgenet_priv *priv = netdev_priv(dev);
int last_tx_cn, last_c_index, num_tx_bds;
struct enet_cb *tx_cb_ptr;
struct netdev_queue *txq;
unsigned int c_index;
/* Compute how many buffers are transmited since last xmit call */
c_index = bcmgenet_tdma_ring_readl(priv, ring->index, TDMA_CONS_INDEX);
txq = netdev_get_tx_queue(dev, ring->queue);
last_c_index = ring->c_index;
num_tx_bds = ring->size;
@ -917,8 +919,8 @@ static void __bcmgenet_tx_reclaim(struct net_device *dev,
if (ring->free_bds > (MAX_SKB_FRAGS + 1))
ring->int_disable(priv, ring);
if (__netif_subqueue_stopped(dev, ring->queue))
netif_wake_subqueue(dev, ring->queue);
if (netif_tx_queue_stopped(txq))
netif_tx_wake_queue(txq);
ring->c_index = c_index;
}
@ -1106,6 +1108,7 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
struct bcmgenet_tx_ring *ring = NULL;
struct netdev_queue *txq;
unsigned long flags = 0;
int nr_frags, index;
u16 dma_desc_flags;
@ -1127,10 +1130,11 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
nr_frags = skb_shinfo(skb)->nr_frags;
ring = &priv->tx_rings[index];
txq = netdev_get_tx_queue(dev, ring->queue);
spin_lock_irqsave(&ring->lock, flags);
if (ring->free_bds <= nr_frags + 1) {
netif_stop_subqueue(dev, ring->queue);
netif_tx_stop_queue(txq);
netdev_err(dev, "%s: tx ring %d full when queue %d awake\n",
__func__, index, ring->queue);
ret = NETDEV_TX_BUSY;
@ -1177,7 +1181,7 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
ring->prod_index, TDMA_PROD_INDEX);
if (ring->free_bds <= (MAX_SKB_FRAGS + 1)) {
netif_stop_subqueue(dev, ring->queue);
netif_tx_stop_queue(txq);
ring->int_enable(priv, ring);
}