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niu: Add support for byte queue limits. 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-12-01 22:15:47 -05:00
parent 63ec3c83e7
commit efa230f2c6
1 changed files with 11 additions and 1 deletions
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12
drivers/net/ethernet/sun/niu.c
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@ -3598,6 +3598,7 @@ static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
{
struct netdev_queue *txq;
unsigned int tx_bytes;
u16 pkt_cnt, tmp;
int cons, index;
u64 cs;
@ -3620,12 +3621,18 @@ static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
netif_printk(np, tx_done, KERN_DEBUG, np->dev,
"%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
while (pkt_cnt--)
tx_bytes = 0;
tmp = pkt_cnt;
while (tmp--) {
tx_bytes += rp->tx_buffs[cons].skb->len;
cons = release_tx_packet(np, rp, cons);
}
rp->cons = cons;
smp_mb();
netdev_tx_completed_queue(txq, pkt_cnt, tx_bytes);
out:
if (unlikely(netif_tx_queue_stopped(txq) &&
(niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
@ -4326,6 +4333,7 @@ static void niu_free_channels(struct niu *np)
struct tx_ring_info *rp = &np->tx_rings[i];
niu_free_tx_ring_info(np, rp);
netdev_tx_reset_queue(netdev_get_tx_queue(np->dev, i));
}
kfree(np->tx_rings);
np->tx_rings = NULL;
@ -6731,6 +6739,8 @@ static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
prod = NEXT_TX(rp, prod);
}
netdev_tx_sent_queue(txq, skb->len);
if (prod < rp->prod)
rp->wrap_bit ^= TX_RING_KICK_WRAP;
rp->prod = prod;