[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code

We now have struct net_device_stats embedded in struct net_device,
and the default ->get_stats() hook does the obvious thing for us.

Run through drivers/net/* and remove the driver-local storage of
statistics, and driver-local ->get_stats() hook where applicable.

This was just the low-hanging fruit in drivers/net; plenty more drivers
remain to be updated.

[ Resolved conflicts with napi_struct changes and fix sunqe build
  regression... -DaveM ]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 25 deletions

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 002f8baaab2d..5a1a1165b48c 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -116,7 +116,6 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev);
 static void gfar_timeout(struct net_device *dev);
 static int gfar_close(struct net_device *dev);
 struct sk_buff *gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp);
-static struct net_device_stats *gfar_get_stats(struct net_device *dev);
 static int gfar_set_mac_address(struct net_device *dev);
 static int gfar_change_mtu(struct net_device *dev, int new_mtu);
 static irqreturn_t gfar_error(int irq, void *dev_id);
@@ -266,7 +265,6 @@ static int gfar_probe(struct platform_device *pdev)
         dev->poll_controller = gfar_netpoll;
 #endif
         dev->stop = gfar_close;
-        dev->get_stats = gfar_get_stats;
         dev->change_mtu = gfar_change_mtu;
         dev->mtu = 1500;
         dev->set_multicast_list = gfar_set_multi;
@@ -1013,7 +1011,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
         unsigned long flags;
 
         /* Update transmit stats */
-        priv->stats.tx_bytes += skb->len;
+        dev->stats.tx_bytes += skb->len;
 
         /* Lock priv now */
         spin_lock_irqsave(&priv->txlock, flags);
@@ -1086,7 +1084,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
         if (txbdp == priv->dirty_tx) {
                 netif_stop_queue(dev);
 
-                priv->stats.tx_fifo_errors++;
+                dev->stats.tx_fifo_errors++;
         }
 
         /* Update the current txbd to the next one */
@@ -1119,14 +1117,6 @@ static int gfar_close(struct net_device *dev)
         return 0;
 }
 
-/* returns a net_device_stats structure pointer */
-static struct net_device_stats * gfar_get_stats(struct net_device *dev)
-{
-        struct gfar_private *priv = netdev_priv(dev);
-
-        return &(priv->stats);
-}
-
 /* Changes the mac address if the controller is not running. */
 int gfar_set_mac_address(struct net_device *dev)
 {
@@ -1238,7 +1228,7 @@ static void gfar_timeout(struct net_device *dev)
 {
         struct gfar_private *priv = netdev_priv(dev);
 
-        priv->stats.tx_errors++;
+        dev->stats.tx_errors++;
 
         if (dev->flags & IFF_UP) {
                 stop_gfar(dev);
@@ -1268,12 +1258,12 @@ static irqreturn_t gfar_transmit(int irq, void *dev_id)
                 if ((bdp == priv->cur_tx) && (netif_queue_stopped(dev) == 0))
                         break;
 
-                priv->stats.tx_packets++;
+                dev->stats.tx_packets++;
 
                 /* Deferred means some collisions occurred during transmit, */
                 /* but we eventually sent the packet. */
                 if (bdp->status & TXBD_DEF)
-                        priv->stats.collisions++;
+                        dev->stats.collisions++;
 
                 /* Free the sk buffer associated with this TxBD */
                 dev_kfree_skb_irq(priv->tx_skbuff[priv->skb_dirtytx]);
@@ -1345,7 +1335,7 @@ struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp)
 
 static inline void count_errors(unsigned short status, struct gfar_private *priv)
 {
-        struct net_device_stats *stats = &priv->stats;
+        struct net_device_stats *stats = &dev->stats;
         struct gfar_extra_stats *estats = &priv->extra_stats;
 
         /* If the packet was truncated, none of the other errors
@@ -1470,7 +1460,7 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
         if (NULL == skb) {
                 if (netif_msg_rx_err(priv))
                         printk(KERN_WARNING "%s: Missing skb!!.\n", dev->name);
-                priv->stats.rx_dropped++;
+                dev->stats.rx_dropped++;
                 priv->extra_stats.rx_skbmissing++;
         } else {
                 int ret;
@@ -1528,7 +1518,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
                       (RXBD_LARGE | RXBD_SHORT | RXBD_NONOCTET
                        | RXBD_CRCERR | RXBD_OVERRUN | RXBD_TRUNCATED))) {
                         /* Increment the number of packets */
-                        priv->stats.rx_packets++;
+                        dev->stats.rx_packets++;
                         howmany++;
 
                         /* Remove the FCS from the packet length */
@@ -1536,7 +1526,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
 
                         gfar_process_frame(dev, skb, pkt_len);
 
-                        priv->stats.rx_bytes += pkt_len;
+                        dev->stats.rx_bytes += pkt_len;
                 } else {
                         count_errors(bdp->status, priv);
 
@@ -1916,17 +1906,17 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
 
         /* Update the error counters */
         if (events & IEVENT_TXE) {
-                priv->stats.tx_errors++;
+                dev->stats.tx_errors++;
 
                 if (events & IEVENT_LC)
-                        priv->stats.tx_window_errors++;
+                        dev->stats.tx_window_errors++;
                 if (events & IEVENT_CRL)
-                        priv->stats.tx_aborted_errors++;
+                        dev->stats.tx_aborted_errors++;
                 if (events & IEVENT_XFUN) {
                         if (netif_msg_tx_err(priv))
                                 printk(KERN_DEBUG "%s: TX FIFO underrun, "
                                        "packet dropped.\n", dev->name);
-                        priv->stats.tx_dropped++;
+                        dev->stats.tx_dropped++;
                         priv->extra_stats.tx_underrun++;
 
                         /* Reactivate the Tx Queues */
@@ -1936,7 +1926,7 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
                         printk(KERN_DEBUG "%s: Transmit Error\n", dev->name);
         }
         if (events & IEVENT_BSY) {
-                priv->stats.rx_errors++;
+                dev->stats.rx_errors++;
                 priv->extra_stats.rx_bsy++;
 
                 gfar_receive(irq, dev_id);
@@ -1951,7 +1941,7 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
                                dev->name, gfar_read(&priv->regs->rstat));
         }
         if (events & IEVENT_BABR) {
-                priv->stats.rx_errors++;
+                dev->stats.rx_errors++;
                 priv->extra_stats.rx_babr++;
 
                 if (netif_msg_rx_err(priv))