b44: add support for Byte Queue Limits

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>

diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index 9b017d9..c96930f 100644 (file)
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -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)