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[NET]: Make the loopback device per network namespace.

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This patch makes loopback_dev per network namespace.  Adding
code to create a different loopback device for each network
namespace and adding the code to free a loopback device
when a network namespace exits.

This patch modifies all users the loopback_dev so they
access it as init_net.loopback_dev, keeping all of the
code compiling and working.  A later pass will be needed to
update the users to use something other than the initial network
namespace.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
2007-09-26 22:10:56 -07:00
committed by David S. Miller
parent 0cc217e16c
commit 2774c7aba6
13 changed files with 64 additions and 45 deletions
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3
include/net/net_namespace.h
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@@ -9,6 +9,7 @@
#include <linux/list.h>
struct proc_dir_entry;
struct net_device;
struct net {
atomic_t count; /* To decided when the network
* namespace should be freed.
@@ -23,6 +24,8 @@ struct net {
struct proc_dir_entry *proc_net_stat;
struct proc_dir_entry *proc_net_root;
struct net_device *loopback_dev; /* The loopback */
struct list_head dev_base_head;
struct hlist_head *dev_name_head;
struct hlist_head *dev_index_head;