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authorStephen Hemminger <shemminger@vyatta.com>2009-06-12 19:02:47 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-13 23:28:56 -0700
commit9e71626c1c23ec69372c43c6fe66c1171032bf42 (patch)
tree664e2c6d342c210a6f041b97ed9a3d9c1bc58f06
parent7e0838404541d2758bee089632690aabd82f3d5d (diff)
bonding: fix destructor
It is not safe to use a network device destructor that is a function in the module, since it can be called after module is unloaded if sysfs handle is open. When eventually using netlink, the device cleanup code needs to be done via uninit function. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/bonding/bond_main.c21
-rw-r--r--drivers/net/bonding/bond_sysfs.c2
-rw-r--r--drivers/net/bonding/bonding.h1
3 files changed, 9 insertions, 15 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 23b832ffe7a..2fc3561e099 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1972,25 +1972,19 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
* Destroy a bonding device.
* Must be under rtnl_lock when this function is called.
*/
-void bond_destroy(struct bonding *bond)
-{
- bond_deinit(bond->dev);
- bond_destroy_sysfs_entry(bond);
- unregister_netdevice(bond->dev);
-}
-
-static void bond_destructor(struct net_device *bond_dev)
+static void bond_uninit(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
+ bond_deinit(bond_dev);
+ bond_destroy_sysfs_entry(bond);
+
if (bond->wq)
destroy_workqueue(bond->wq);
netif_addr_lock_bh(bond_dev);
bond_mc_list_destroy(bond);
netif_addr_unlock_bh(bond_dev);
-
- free_netdev(bond_dev);
}
/*
@@ -2006,7 +2000,7 @@ int bond_release_and_destroy(struct net_device *bond_dev, struct net_device *sl
if ((ret == 0) && (bond->slave_cnt == 0)) {
printk(KERN_INFO DRV_NAME ": %s: destroying bond %s.\n",
bond_dev->name, bond_dev->name);
- bond_destroy(bond);
+ unregister_netdevice(bond_dev);
}
return ret;
}
@@ -4572,6 +4566,7 @@ static const struct ethtool_ops bond_ethtool_ops = {
};
static const struct net_device_ops bond_netdev_ops = {
+ .ndo_uninit = bond_uninit,
.ndo_open = bond_open,
.ndo_stop = bond_close,
.ndo_start_xmit = bond_start_xmit,
@@ -4622,7 +4617,7 @@ static int bond_init(struct net_device *bond_dev)
bond_dev->ethtool_ops = &bond_ethtool_ops;
bond_set_mode_ops(bond, bond->params.mode);
- bond_dev->destructor = bond_destructor;
+ bond_dev->destructor = free_netdev;
/* Initialize the device options */
bond_dev->tx_queue_len = 0;
@@ -4706,7 +4701,7 @@ static void bond_free_all(void)
bond_work_cancel_all(bond);
/* Release the bonded slaves */
bond_release_all(bond_dev);
- bond_destroy(bond);
+ unregister_netdevice(bond_dev);
}
bond_destroy_proc_dir();
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 8041b679353..72357597fa1 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -127,7 +127,7 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
printk(KERN_INFO DRV_NAME
": %s is being deleted...\n",
bond->dev->name);
- bond_destroy(bond);
+ unregister_netdevice(bond->dev);
goto out_unlock;
}
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index af81e9b7fe3..6290a502742 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -322,7 +322,6 @@ static inline void bond_unset_master_alb_flags(struct bonding *bond)
struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr);
int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
int bond_create(const char *name);
-void bond_destroy(struct bonding *bond);
int bond_release_and_destroy(struct net_device *bond_dev, struct net_device *slave_dev);
int bond_create_sysfs(void);
void bond_destroy_sysfs(void);