netdevice: safe convert to netdev_priv() #part-4

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>

3 files changed, 24 insertions, 22 deletions

diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 29ef8dc6921b..ea9438fc6855 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -101,7 +101,7 @@ static LIST_HEAD(br2684_devs);
 
 static inline struct br2684_dev *BRPRIV(const struct net_device *net_dev)
 {
-	return (struct br2684_dev *)net_dev->priv;
+	return (struct br2684_dev *)netdev_priv(net_dev);
 }
 
 static inline struct net_device *list_entry_brdev(const struct list_head *le)
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 1def62d17739..e5e301550e8a 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -152,7 +152,7 @@ static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
 		buff += 4;
 		mesg->content.normal.flag = *buff & 0x01;	/* 0x01 is topology change */
 
-		priv = (struct lec_priv *)dev->priv;
+		priv = netdev_priv(dev);
 		atm_force_charge(priv->lecd, skb2->truesize);
 		sk = sk_atm(priv->lecd);
 		skb_queue_tail(&sk->sk_receive_queue, skb2);
@@ -218,7 +218,7 @@ static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
 
 static int lec_open(struct net_device *dev)
 {
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 
 	netif_start_queue(dev);
 	memset(&priv->stats, 0, sizeof(struct net_device_stats));
@@ -252,7 +252,7 @@ static void lec_tx_timeout(struct net_device *dev)
 static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct sk_buff *skb2;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 	struct lecdatahdr_8023 *lec_h;
 	struct atm_vcc *vcc;
 	struct lec_arp_table *entry;
@@ -433,14 +433,14 @@ static int lec_close(struct net_device *dev)
  */
 static struct net_device_stats *lec_get_stats(struct net_device *dev)
 {
-	return &((struct lec_priv *)dev->priv)->stats;
+	return &((struct lec_priv *)netdev_priv(dev))->stats;
 }
 
 static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
 {
 	unsigned long flags;
 	struct net_device *dev = (struct net_device *)vcc->proto_data;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 	struct atmlec_msg *mesg;
 	struct lec_arp_table *entry;
 	int i;
@@ -580,7 +580,7 @@ static void lec_atm_close(struct atm_vcc *vcc)
 {
 	struct sk_buff *skb;
 	struct net_device *dev = (struct net_device *)vcc->proto_data;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 
 	priv->lecd = NULL;
 	/* Do something needful? */
@@ -711,7 +711,7 @@ static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
 {
 	unsigned long flags;
 	struct net_device *dev = (struct net_device *)vcc->proto_data;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 
 #if DUMP_PACKETS >0
 	int i = 0;
@@ -858,7 +858,7 @@ static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
 	vpriv->old_pop = vcc->pop;
 	vcc->user_back = vpriv;
 	vcc->pop = lec_pop;
-	lec_vcc_added(dev_lec[ioc_data.dev_num]->priv,
+	lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]),
 		      &ioc_data, vcc, vcc->push);
 	vcc->proto_data = dev_lec[ioc_data.dev_num];
 	vcc->push = lec_push;
@@ -870,7 +870,8 @@ static int lec_mcast_attach(struct atm_vcc *vcc, int arg)
 	if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
 		return -EINVAL;
 	vcc->proto_data = dev_lec[arg];
-	return (lec_mcast_make((struct lec_priv *)dev_lec[arg]->priv, vcc));
+	return lec_mcast_make((struct lec_priv *)netdev_priv(dev_lec[arg]),
+				vcc);
 }
 
 /* Initialize device. */
@@ -912,11 +913,11 @@ static int lecd_attach(struct atm_vcc *vcc, int arg)
 			return -EINVAL;
 		}
 
-		priv = dev_lec[i]->priv;
+		priv = netdev_priv(dev_lec[i]);
 		priv->is_trdev = is_trdev;
 		lec_init(dev_lec[i]);
 	} else {
-		priv = dev_lec[i]->priv;
+		priv = netdev_priv(dev_lec[i]);
 		if (priv->lecd)
 			return -EADDRINUSE;
 	}
@@ -1077,7 +1078,8 @@ static void *lec_itf_walk(struct lec_state *state, loff_t *l)
 	void *v;
 
 	dev = state->dev ? state->dev : dev_lec[state->itf];
-	v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
+	v = (dev && netdev_priv(dev)) ?
+		lec_priv_walk(state, l, netdev_priv(dev)) : NULL;
 	if (!v && dev) {
 		dev_put(dev);
 		/* Partial state reset for the next time we get called */
@@ -1239,7 +1241,7 @@ static void __exit lane_module_cleanup(void)
 
 	for (i = 0; i < MAX_LEC_ITF; i++) {
 		if (dev_lec[i] != NULL) {
-			priv = (struct lec_priv *)dev_lec[i]->priv;
+			priv = netdev_priv(dev_lec[i]);
 			unregister_netdev(dev_lec[i]);
 			free_netdev(dev_lec[i]);
 			dev_lec[i] = NULL;
@@ -1263,7 +1265,7 @@ static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force,
 			 u8 **tlvs, u32 *sizeoftlvs)
 {
 	unsigned long flags;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 	struct lec_arp_table *table;
 	struct sk_buff *skb;
 	int retval;
@@ -1310,7 +1312,7 @@ static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst,
 {
 	int retval;
 	struct sk_buff *skb;
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 
 	if (compare_ether_addr(lan_dst, dev->dev_addr))
 		return (0);	/* not our mac address */
@@ -1347,7 +1349,7 @@ static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr,
 #if 0
 	int i = 0;
 #endif
-	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+	struct lec_priv *priv = netdev_priv(dev);
 #if 0				/*
 				 * Why have the TLVs in LE_ARP entries
 				 * since we do not use them? When you
diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index 010b1d2a5a8f..12e9ea371db1 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -785,7 +785,7 @@ static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg)
 	}
 
 	if (mpc->dev) { /* check if the lec is LANE2 capable */
-		priv = (struct lec_priv *)mpc->dev->priv;
+		priv = netdev_priv(mpc->dev);
 		if (priv->lane_version < 2) {
 			dev_put(mpc->dev);
 			mpc->dev = NULL;
@@ -845,7 +845,7 @@ static void mpoad_close(struct atm_vcc *vcc)
 
 	mpc->mpoad_vcc = NULL;
 	if (mpc->dev) {
-		struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv;
+		struct lec_priv *priv = netdev_priv(mpc->dev);
 		priv->lane2_ops->associate_indicator = NULL;
 		stop_mpc(mpc);
 		dev_put(mpc->dev);
@@ -976,7 +976,7 @@ static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned lo
 
 	switch (event) {
 	case NETDEV_REGISTER:       /* a new lec device was allocated */
-		priv = (struct lec_priv *)dev->priv;
+		priv = netdev_priv(dev);
 		if (priv->lane_version < 2)
 			break;
 		priv->lane2_ops->associate_indicator = lane2_assoc_ind;
@@ -1324,7 +1324,7 @@ static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *m
 	dprintk("\n");
 
 	if (mpc->dev) {
-		priv = (struct lec_priv *)mpc->dev->priv;
+		priv = netdev_priv(mpc->dev);
 		retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv));
 		if (retval == 0)
 			printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name);
@@ -1474,7 +1474,7 @@ static void __exit atm_mpoa_cleanup(void)
 		tmp = mpc->next;
 		if (mpc->dev != NULL) {
 			stop_mpc(mpc);
-			priv = (struct lec_priv *)mpc->dev->priv;
+			priv = netdev_priv(mpc->dev);
 			if (priv->lane2_ops != NULL)
 				priv->lane2_ops->associate_indicator = NULL;
 		}