[IFB]: Keep ifb devices on list
Use a list instead of an array to allow creating new devices.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 07b4c0d..819945e 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -33,12 +33,15 @@
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
+#include <linux/list.h>
#include <net/pkt_sched.h>
#define TX_TIMEOUT (2*HZ)
#define TX_Q_LIMIT 32
struct ifb_private {
+ struct list_head list;
+ struct net_device *dev;
struct net_device_stats stats;
struct tasklet_struct ifb_tasklet;
int tasklet_pending;
@@ -197,7 +200,7 @@
return stats;
}
-static struct net_device **ifbs;
+static LIST_HEAD(ifbs);
/* Number of ifb devices to be set up by this module. */
module_param(numifbs, int, 0);
@@ -229,6 +232,7 @@
static int __init ifb_init_one(int index)
{
struct net_device *dev_ifb;
+ struct ifb_private *priv;
int err;
dev_ifb = alloc_netdev(sizeof(struct ifb_private),
@@ -241,30 +245,33 @@
free_netdev(dev_ifb);
dev_ifb = NULL;
} else {
- ifbs[index] = dev_ifb;
+ priv = netdev_priv(dev_ifb);
+ priv->dev = dev_ifb;
+ list_add_tail(&priv->list, &ifbs);
}
return err;
}
-static void ifb_free_one(int index)
+static void ifb_free_one(struct net_device *dev)
{
- unregister_netdev(ifbs[index]);
- free_netdev(ifbs[index]);
+ struct ifb_private *priv = netdev_priv(dev);
+
+ list_del(&priv->list);
+ unregister_netdev(dev);
+ free_netdev(dev);
}
static int __init ifb_init_module(void)
{
+ struct ifb_private *priv, *next;
int i, err = 0;
- ifbs = kmalloc(numifbs * sizeof(void *), GFP_KERNEL);
- if (!ifbs)
- return -ENOMEM;
+
for (i = 0; i < numifbs && !err; i++)
err = ifb_init_one(i);
if (err) {
- i--;
- while (--i >= 0)
- ifb_free_one(i);
+ list_for_each_entry_safe(priv, next, &ifbs, list)
+ ifb_free_one(priv->dev);
}
return err;
@@ -272,11 +279,10 @@
static void __exit ifb_cleanup_module(void)
{
- int i;
+ struct ifb_private *priv, *next;
- for (i = 0; i < numifbs; i++)
- ifb_free_one(i);
- kfree(ifbs);
+ list_for_each_entry_safe(priv, next, &ifbs, list)
+ ifb_free_one(priv->dev);
}
module_init(ifb_init_module);