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net: bcmgenet: add BQL support 

Add Byte Queue Limits (BQL) support to bcmgenet driver.

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Petri Gynther 2016-04-09 00:20:36 -07:00 committed by David S. Miller
parent dac916f8fb
commit e178c8c230
1 changed files with 14 additions and 1 deletions
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15
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1221,8 +1221,10 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev,
dev->stats.tx_packets += pkts_compl;
dev->stats.tx_bytes += bytes_compl;
txq = netdev_get_tx_queue(dev, ring->queue);
netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
if (ring->free_bds > (MAX_SKB_FRAGS + 1)) {
txq = netdev_get_tx_queue(dev, ring->queue);
if (netif_tx_queue_stopped(txq))
netif_tx_wake_queue(txq);
}
@ -1516,6 +1518,8 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
ring->prod_index += nr_frags + 1;
ring->prod_index &= DMA_P_INDEX_MASK;
netdev_tx_sent_queue(txq, GENET_CB(skb)->bytes_sent);
if (ring->free_bds <= (MAX_SKB_FRAGS + 1))
netif_tx_stop_queue(txq);
@ -2364,6 +2368,7 @@ static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
{
int i;
struct netdev_queue *txq;
bcmgenet_fini_rx_napi(priv);
bcmgenet_fini_tx_napi(priv);
@ -2378,6 +2383,14 @@ static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
}
}
for (i = 0; i < priv->hw_params->tx_queues; i++) {
txq = netdev_get_tx_queue(priv->dev, priv->tx_rings[i].queue);
netdev_tx_reset_queue(txq);
}
txq = netdev_get_tx_queue(priv->dev, priv->tx_rings[DESC_INDEX].queue);
netdev_tx_reset_queue(txq);
bcmgenet_free_rx_buffers(priv);
kfree(priv->rx_cbs);
kfree(priv->tx_cbs);