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yaml
---
r: 58895
b: refs/heads/master
c: 206c9fb
h: refs/heads/master
i:
  58893: aae5daf
  58891: 1dd4d68
  58887: bed692c
  58879: c74f6af
v: v3
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Patrick McHardy authored and David S. Miller committed Jul 11, 2007
1 parent 31dfc29 commit d2b93c4
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Showing 2 changed files with 30 additions and 19 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 58651b24acfd9a6fd3b217b52e577ce34b0932af
refs/heads/master: 206c9fb26f5df2ea6d440fb64159faf4d8665398
47 changes: 29 additions & 18 deletions trunk/drivers/net/dummy.c
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,12 @@
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/rtnetlink.h>

struct dummy_priv {
struct net_device *dev;
struct list_head list;
};

static int numdummies = 1;

Expand Down Expand Up @@ -81,18 +87,20 @@ static int dummy_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}

static struct net_device **dummies;
static LIST_HEAD(dummies);

/* Number of dummy devices to be set up by this module. */
module_param(numdummies, int, 0);
MODULE_PARM_DESC(numdummies, "Number of dummy pseudo devices");

static int __init dummy_init_one(int index)
static int __init dummy_init_one(void)
{
struct net_device *dev_dummy;
struct dummy_priv *priv;
int err;

dev_dummy = alloc_netdev(0, "dummy%d", dummy_setup);
dev_dummy = alloc_netdev(sizeof(struct dummy_priv), "dummy%d",
dummy_setup);

if (!dev_dummy)
return -ENOMEM;
Expand All @@ -101,40 +109,43 @@ static int __init dummy_init_one(int index)
free_netdev(dev_dummy);
dev_dummy = NULL;
} else {
dummies[index] = dev_dummy;
priv = netdev_priv(dev_dummy);
priv->dev = dev_dummy;
list_add_tail(&priv->list, &dummies);
}

return err;
}

static void dummy_free_one(int index)
static void dummy_free_one(struct net_device *dev)
{
unregister_netdev(dummies[index]);
free_netdev(dummies[index]);
struct dummy_priv *priv = netdev_priv(dev);

list_del(&priv->list);
unregister_netdev(dev);
free_netdev(dev);
}

static int __init dummy_init_module(void)
{
struct dummy_priv *priv, *next;
int i, err = 0;
dummies = kmalloc(numdummies * sizeof(void *), GFP_KERNEL);
if (!dummies)
return -ENOMEM;

for (i = 0; i < numdummies && !err; i++)
err = dummy_init_one(i);
err = dummy_init_one();
if (err) {
i--;
while (--i >= 0)
dummy_free_one(i);
list_for_each_entry_safe(priv, next, &dummies, list)
dummy_free_one(priv->dev);
}
return err;
}

static void __exit dummy_cleanup_module(void)
{
int i;
for (i = 0; i < numdummies; i++)
dummy_free_one(i);
kfree(dummies);
struct dummy_priv *priv, *next;

list_for_each_entry_safe(priv, next, &dummies, list)
dummy_free_one(priv->dev);
}

module_init(dummy_init_module);
Expand Down

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