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Message-ID: <4AE7289C.9050901@gmail.com>
Date: Tue, 27 Oct 2009 18:06:36 +0100
From: Eric Dumazet <eric.dumazet@...il.com>
To: "David S. Miller" <davem@...emloft.net>
CC: Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 3/6] net: add a list_head parameter to dellink() method
Adding a list_head parameter to rtnl_link_ops->dellink() methods
allow us to queue devices on a list, in order to dismantle
them all at once.
Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
---
drivers/net/macvlan.c | 6 +++---
drivers/net/veth.c | 2 +-
include/net/rtnetlink.h | 3 ++-
net/8021q/vlan.c | 8 ++++----
net/8021q/vlan.h | 2 +-
net/core/dev.c | 2 +-
net/core/rtnetlink.c | 14 +++++++-------
7 files changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 3aabfd9..20b7707 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -555,13 +555,13 @@ static int macvlan_newlink(struct net_device *dev,
return 0;
}
-static void macvlan_dellink(struct net_device *dev)
+static void macvlan_dellink(struct net_device *dev, struct list_head *head)
{
struct macvlan_dev *vlan = netdev_priv(dev);
struct macvlan_port *port = vlan->port;
list_del(&vlan->list);
- unregister_netdevice(dev);
+ unregister_netdevice_queue(dev, head);
if (list_empty(&port->vlans))
macvlan_port_destroy(port->dev);
@@ -601,7 +601,7 @@ static int macvlan_device_event(struct notifier_block *unused,
break;
case NETDEV_UNREGISTER:
list_for_each_entry_safe(vlan, next, &port->vlans, list)
- macvlan_dellink(vlan->dev);
+ macvlan_dellink(vlan->dev, NULL);
break;
}
return NOTIFY_DONE;
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index ade5b34..ffb502d 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -442,7 +442,7 @@ err_register_peer:
return err;
}
-static void veth_dellink(struct net_device *dev)
+static void veth_dellink(struct net_device *dev, struct list_head *head)
{
struct veth_priv *priv;
struct net_device *peer;
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index c3aa044..cd5af1f 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -61,7 +61,8 @@ struct rtnl_link_ops {
int (*changelink)(struct net_device *dev,
struct nlattr *tb[],
struct nlattr *data[]);
- void (*dellink)(struct net_device *dev);
+ void (*dellink)(struct net_device *dev,
+ struct list_head *head);
size_t (*get_size)(const struct net_device *dev);
int (*fill_info)(struct sk_buff *skb,
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 8836575..6b5c9dd 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -140,7 +140,7 @@ static void vlan_rcu_free(struct rcu_head *rcu)
vlan_group_free(container_of(rcu, struct vlan_group, rcu));
}
-void unregister_vlan_dev(struct net_device *dev)
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
@@ -164,7 +164,7 @@ void unregister_vlan_dev(struct net_device *dev)
synchronize_net();
- unregister_netdevice(dev);
+ unregister_netdevice_queue(dev, head);
/* If the group is now empty, kill off the group. */
if (grp->nr_vlans == 0) {
@@ -535,7 +535,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (grp->nr_vlans == 1)
i = VLAN_GROUP_ARRAY_LEN;
- unregister_vlan_dev(vlandev);
+ unregister_vlan_dev(vlandev, NULL);
}
break;
}
@@ -642,7 +642,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
err = -EPERM;
if (!capable(CAP_NET_ADMIN))
break;
- unregister_vlan_dev(dev);
+ unregister_vlan_dev(dev, NULL);
err = 0;
break;
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 4ade5ed..68f9290 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -82,7 +82,7 @@ void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
void vlan_setup(struct net_device *dev);
int register_vlan_dev(struct net_device *dev);
-void unregister_vlan_dev(struct net_device *dev);
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
static inline u32 vlan_get_ingress_priority(struct net_device *dev,
u16 vlan_tci)
diff --git a/net/core/dev.c b/net/core/dev.c
index 15d1453..dedacd8 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5629,7 +5629,7 @@ restart:
/* Delete virtual devices */
if (dev->rtnl_link_ops && dev->rtnl_link_ops->dellink) {
- dev->rtnl_link_ops->dellink(dev);
+ dev->rtnl_link_ops->dellink(dev, NULL);
goto restart;
}
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 52ea418..391a62c 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -248,7 +248,7 @@ static LIST_HEAD(link_ops);
int __rtnl_link_register(struct rtnl_link_ops *ops)
{
if (!ops->dellink)
- ops->dellink = unregister_netdevice;
+ ops->dellink = unregister_netdevice_queue;
list_add_tail(&ops->list, &link_ops);
return 0;
@@ -277,13 +277,13 @@ EXPORT_SYMBOL_GPL(rtnl_link_register);
static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
{
struct net_device *dev;
-restart:
+ LIST_HEAD(list_kill);
+
for_each_netdev(net, dev) {
- if (dev->rtnl_link_ops == ops) {
- ops->dellink(dev);
- goto restart;
- }
+ if (dev->rtnl_link_ops == ops)
+ ops->dellink(dev, &list_kill);
}
+ unregister_netdevice_many(&list_kill);
}
void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
@@ -972,7 +972,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
if (!ops)
return -EOPNOTSUPP;
- ops->dellink(dev);
+ ops->dellink(dev, NULL);
return 0;
}
--
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