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authorWang Chen <wangchen@cn.fujitsu.com>2008-11-20 04:26:21 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-20 04:26:21 -0800
commit7be6065b39c3f1cfa796667eac1a2170465acc91 (patch)
tree973a5d4bc0782e25a29d96ecf99b216ab6175446 /net
parent826dd0e1e3c83ce0cd8c295cd0f6e72b8b527809 (diff)
netdevice wanrouter: Convert directly reference of netdev->priv
1. Make device driver to allocate memory for netdev. 2. Convert all directly reference of netdev->priv to netdev_priv(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/wanrouter/wanmain.c36
1 files changed, 11 insertions, 25 deletions
diff --git a/net/wanrouter/wanmain.c b/net/wanrouter/wanmain.c
index 7f07152bc10..39701dec1db 100644
--- a/net/wanrouter/wanmain.c
+++ b/net/wanrouter/wanmain.c
@@ -60,6 +60,8 @@
#define KMEM_SAFETYZONE 8
+#define DEV_TO_SLAVE(dev) (*((struct net_device **)netdev_priv(dev)))
+
/*
* Function Prototypes
*/
@@ -511,7 +513,7 @@ static int wanrouter_device_shutdown(struct wan_device *wandev)
if (err)
return err;
/* The above function deallocates the current dev
- * structure. Therefore, we cannot use dev->priv
+ * structure. Therefore, we cannot use netdev_priv(dev)
* as the next element: wandev->dev points to the
* next element */
dev = wandev->dev;
@@ -589,10 +591,6 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
err = -EPROTONOSUPPORT;
goto out;
} else {
- dev = kzalloc(sizeof(struct net_device), GFP_KERNEL);
- err = -ENOBUFS;
- if (dev == NULL)
- goto out;
err = wandev->new_if(wandev, dev, cnf);
}
@@ -622,10 +620,9 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
wandev->dev = dev;
} else {
for (slave=wandev->dev;
- *((struct net_device **)slave->priv);
- slave = *((struct net_device **)slave->priv));
-
- *((struct net_device **)slave->priv) = dev;
+ DEV_TO_SLAVE(slave);
+ slave = DEV_TO_SLAVE(slave))
+ DEV_TO_SLAVE(slave) = dev;
}
++wandev->ndev;
@@ -636,15 +633,9 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
}
if (wandev->del_if)
wandev->del_if(wandev, dev);
+ free_netdev(dev);
}
- /* This code has moved from del_if() function */
- kfree(dev->priv);
- dev->priv = NULL;
-
- /* Sync PPP is disabled */
- if (cnf->config_id != WANCONFIG_MPPP)
- kfree(dev);
out:
kfree(cnf);
return err;
@@ -734,7 +725,7 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
dev = wandev->dev;
prev = NULL;
while (dev && strcmp(name, dev->name)) {
- struct net_device **slave = dev->priv;
+ struct net_device **slave = netdev_priv(dev);
prev = dev;
dev = *slave;
}
@@ -751,12 +742,12 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
lock_adapter_irq(&wandev->lock, &smp_flags);
if (prev) {
- struct net_device **prev_slave = prev->priv;
- struct net_device **slave = dev->priv;
+ struct net_device **prev_slave = netdev_priv(prev);
+ struct net_device **slave = netdev_priv(dev);
*prev_slave = *slave;
} else {
- struct net_device **slave = dev->priv;
+ struct net_device **slave = netdev_priv(dev);
wandev->dev = *slave;
}
--wandev->ndev;
@@ -764,11 +755,6 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
printk(KERN_INFO "%s: unregistering '%s'\n", wandev->name, dev->name);
- /* Due to new interface linking method using dev->priv,
- * this code has moved from del_if() function.*/
- kfree(dev->priv);
- dev->priv=NULL;
-
unregister_netdev(dev);
free_netdev(dev);