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sky2: add bql support 

This adds support for byte queue limits and aggregates statistics
update (suggestion from Eric).

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@drr.davemloft.net>
This commit is contained in:
stephen hemminger 2011-11-29 15:15:33 +00:00 committed by David S. Miller
parent 614c76df1d
commit ec2a5466b3
1 changed files with 13 additions and 5 deletions
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18
drivers/net/ethernet/marvell/sky2.c
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@ -1110,6 +1110,7 @@ static void tx_init(struct sky2_port *sky2)
sky2->tx_prod = sky2->tx_cons = 0;
sky2->tx_tcpsum = 0;
sky2->tx_last_mss = 0;
netdev_reset_queue(sky2->netdev);
le = get_tx_le(sky2, &sky2->tx_prod);
le->addr = 0;
@ -1971,6 +1972,7 @@ static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
if (tx_avail(sky2) <= MAX_SKB_TX_LE)
netif_stop_queue(dev);
netdev_sent_queue(dev, skb->len);
sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
return NETDEV_TX_OK;
@ -2002,7 +2004,8 @@ mapping_error:
static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
{
struct net_device *dev = sky2->netdev;
unsigned idx;
u16 idx;
unsigned int bytes_compl = 0, pkts_compl = 0;
BUG_ON(done >= sky2->tx_ring_size);
@ -2017,10 +2020,8 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
netif_printk(sky2, tx_done, KERN_DEBUG, dev,
"tx done %u\n", idx);
u64_stats_update_begin(&sky2->tx_stats.syncp);
++sky2->tx_stats.packets;
sky2->tx_stats.bytes += skb->len;
u64_stats_update_end(&sky2->tx_stats.syncp);
pkts_compl++;
bytes_compl += skb->len;
re->skb = NULL;
dev_kfree_skb_any(skb);
@ -2031,6 +2032,13 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
sky2->tx_cons = idx;
smp_mb();
netdev_completed_queue(dev, pkts_compl, bytes_compl);
u64_stats_update_begin(&sky2->tx_stats.syncp);
sky2->tx_stats.packets += pkts_compl;
sky2->tx_stats.bytes += bytes_compl;
u64_stats_update_end(&sky2->tx_stats.syncp);
}
static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)