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b44: add support for Byte Queue Limits

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This makes it possible to use some more advanced queuing
techniques with this driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hauke Mehrtens 2013-09-28 23:22:18 +02:00 committed by David S. Miller
parent 0bbf87d852
commit 5055544e96
1 changed files with 10 additions and 0 deletions
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10
drivers/net/ethernet/broadcom/b44.c
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@ -596,6 +596,7 @@ static void b44_timer(unsigned long __opaque)
static void b44_tx(struct b44 *bp)
{
u32 cur, cons;
unsigned bytes_compl = 0, pkts_compl = 0;
cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
cur /= sizeof(struct dma_desc);
@ -612,9 +613,14 @@ static void b44_tx(struct b44 *bp)
skb->len,
DMA_TO_DEVICE);
rp->skb = NULL;
bytes_compl += skb->len;
pkts_compl++;
dev_kfree_skb_irq(skb);
}
netdev_completed_queue(bp->dev, pkts_compl, bytes_compl);
bp->tx_cons = cons;
if (netif_queue_stopped(bp->dev) &&
TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
@ -1018,6 +1024,8 @@ static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (bp->flags & B44_FLAG_REORDER_BUG)
br32(bp, B44_DMATX_PTR);
netdev_sent_queue(dev, skb->len);
if (TX_BUFFS_AVAIL(bp) < 1)
netif_stop_queue(dev);
@ -1416,6 +1424,8 @@ static void b44_init_hw(struct b44 *bp, int reset_kind)
val = br32(bp, B44_ENET_CTRL);
bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
netdev_reset_queue(bp->dev);
}
static int b44_open(struct net_device *dev)