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gianfar: Fix stats support

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This patch updates the per rx/tx queue stats.
To update the per rx queue stats a new structure has been
introduced rx_q_stats.
The per tx queue stats are updated via the netdev_queue
structure itself.

Note that we update only the tx_packtes, tx_bytes, rx_packets,
rx_bytes and rx_dropped stats on a per queue basis.

Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sandeep Gopalpet 2009-12-16 01:15:07 +00:00 committed by David S. Miller
parent 1ccb8389f2
commit a7f38041b8
2 changed files with 46 additions and 6 deletions
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42
drivers/net/gianfar.c
View file

@ -417,6 +417,36 @@ static void gfar_init_mac(struct net_device *ndev)
gfar_write(&regs->fifo_tx_starve_shutoff, priv->fifo_starve_off);
}
static struct net_device_stats *gfar_get_stats(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct netdev_queue *txq;
unsigned long rx_packets = 0, rx_bytes = 0, rx_dropped = 0;
unsigned long tx_packets = 0, tx_bytes = 0;
int i = 0;
for (i = 0; i < priv->num_rx_queues; i++) {
rx_packets += priv->rx_queue[i]->stats.rx_packets;
rx_bytes += priv->rx_queue[i]->stats.rx_bytes;
rx_dropped += priv->rx_queue[i]->stats.rx_dropped;
}
dev->stats.rx_packets = rx_packets;
dev->stats.rx_bytes = rx_bytes;
dev->stats.rx_dropped = rx_dropped;
for (i = 0; i < priv->num_tx_queues; i++) {
txq = netdev_get_tx_queue(dev, i);
tx_bytes += txq->tx_bytes;
tx_packets += txq->tx_packets;
}
dev->stats.tx_bytes = tx_bytes;
dev->stats.tx_packets = tx_packets;
return &dev->stats;
}
static const struct net_device_ops gfar_netdev_ops = {
.ndo_open = gfar_enet_open,
.ndo_start_xmit = gfar_start_xmit,
@ -426,6 +456,7 @@ static const struct net_device_ops gfar_netdev_ops = {
.ndo_tx_timeout = gfar_timeout,
.ndo_do_ioctl = gfar_ioctl,
.ndo_select_queue = gfar_select_queue,
.ndo_get_stats = gfar_get_stats,
.ndo_vlan_rx_register = gfar_vlan_rx_register,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
@ -1943,7 +1974,8 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* Update transmit stats */
dev->stats.tx_bytes += skb->len;
txq->tx_bytes += skb->len;
txq->tx_packets ++;
txbdp = txbdp_start = tx_queue->cur_tx;
@ -2301,8 +2333,6 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
tx_queue->skb_dirtytx = skb_dirtytx;
tx_queue->dirty_tx = bdp;
dev->stats.tx_packets += howmany;
return howmany;
}
@ -2516,14 +2546,14 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit)
}
} else {
/* Increment the number of packets */
dev->stats.rx_packets++;
rx_queue->stats.rx_packets++;
howmany++;
if (likely(skb)) {
pkt_len = bdp->length - ETH_FCS_LEN;
/* Remove the FCS from the packet length */
skb_put(skb, pkt_len);
dev->stats.rx_bytes += pkt_len;
rx_queue->stats.rx_bytes += pkt_len;
gfar_process_frame(dev, skb, amount_pull);
@ -2531,7 +2561,7 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit)
if (netif_msg_rx_err(priv))
printk(KERN_WARNING
"%s: Missing skb!\n", dev->name);
dev->stats.rx_dropped++;
rx_queue->stats.rx_dropped++;
priv->extra_stats.rx_skbmissing++;
}

10
drivers/net/gianfar.h
View file

@ -940,6 +940,15 @@ struct gfar_priv_tx_q {
unsigned short txtime;
};
/*
* Per RX queue stats
*/
struct rx_q_stats {
unsigned long rx_packets;
unsigned long rx_bytes;
unsigned long rx_dropped;
};
/**
* struct gfar_priv_rx_q - per rx queue structure
* @rxlock: per queue rx spin lock
@ -962,6 +971,7 @@ struct gfar_priv_rx_q {
struct rxbd8 *cur_rx;
struct net_device *dev;
struct gfar_priv_grp *grp;
struct rx_q_stats stats;
u16 skb_currx;
u16 qindex;
unsigned int rx_ring_size;