netdevice: safe convert to netdev_priv() #part-1

We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
   netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.

This patch is a safe convert for netdev->priv to netdev_priv(netdev).
Since all of the netdev->priv is only for read.
But it is too big to be sent in one mail.
I split it to 4 parts and make every part smaller than 100,000 bytes,
which is max size allowed by vger.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/net/appletalk/ltpc.c b/drivers/net/appletalk/ltpc.c
index 8d109a5f557..dc4d4960560 100644
--- a/drivers/net/appletalk/ltpc.c
+++ b/drivers/net/appletalk/ltpc.c
@@ -726,7 +726,8 @@ static int sendup_buffer (struct net_device *dev)
 	int dnode, snode, llaptype, len; 
 	int sklen;
 	struct sk_buff *skb;
-	struct net_device_stats *stats = &((struct ltpc_private *)dev->priv)->stats;
+	struct ltpc_private *ltpc_priv = netdev_priv(dev);
+	struct net_device_stats *stats = &ltpc_priv->stats;
 	struct lt_rcvlap *ltc = (struct lt_rcvlap *) ltdmacbuf;
 
 	if (ltc->command != LT_RCVLAP) {
@@ -822,7 +823,8 @@ static int ltpc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	struct sockaddr_at *sa = (struct sockaddr_at *) &ifr->ifr_addr;
 	/* we'll keep the localtalk node address in dev->pa_addr */
-	struct atalk_addr *aa = &((struct ltpc_private *)dev->priv)->my_addr;
+	struct ltpc_private *ltpc_priv = netdev_priv(dev);
+	struct atalk_addr *aa = &ltpc_priv->my_addr;
 	struct lt_init c;
 	int ltflags;
 
@@ -903,7 +905,8 @@ static int ltpc_xmit(struct sk_buff *skb, struct net_device *dev)
 	 * and skb->len is the length of the ddp data + ddp header
 	 */
 
-	struct net_device_stats *stats = &((struct ltpc_private *)dev->priv)->stats;
+	struct ltpc_private *ltpc_priv = netdev_priv(dev);
+	struct net_device_stats *stats = &ltpc_priv->stats;
 
 	int i;
 	struct lt_sendlap cbuf;
@@ -942,7 +945,8 @@ static int ltpc_xmit(struct sk_buff *skb, struct net_device *dev)
 
 static struct net_device_stats *ltpc_get_stats(struct net_device *dev)
 {
-	struct net_device_stats *stats = &((struct ltpc_private *) dev->priv)->stats;
+	struct ltpc_private *ltpc_priv = netdev_priv(dev);
+	struct net_device_stats *stats = &ltpc_priv->stats;
 	return stats;
 }