[NET]: Dynamically allocate the loopback device, part 1.

This patch replaces all occurences to the static variable
loopback_dev to a pointer loopback_dev. That provides the
mindless, trivial, uninteressting change part for the dynamic
allocation for the loopback.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-By: Kirill Korotaev <dev@sw.ru>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 6 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 9c2e94f1c637..b43574f73375 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2410,7 +2410,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
         ASSERT_RTNL();
 
-        if (dev == &loopback_dev && how == 1)
+        if (dev == loopback_dev && how == 1)
                 how = 0;
 
         rt6_ifdown(dev);
@@ -4212,16 +4212,19 @@ int __init addrconf_init(void)
          * device and it being up should be removed.
          */
         rtnl_lock();
-        if (!ipv6_add_dev(&loopback_dev))
+        if (!ipv6_add_dev(loopback_dev))
                 err = -ENOMEM;
         rtnl_unlock();
         if (err)
                 return err;
 
-        ip6_null_entry.rt6i_idev = in6_dev_get(&loopback_dev);
+        ip6_null_entry.u.dst.dev = loopback_dev;
+        ip6_null_entry.rt6i_idev = in6_dev_get(loopback_dev);
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-        ip6_prohibit_entry.rt6i_idev = in6_dev_get(&loopback_dev);
-        ip6_blk_hole_entry.rt6i_idev = in6_dev_get(&loopback_dev);
+        ip6_prohibit_entry.u.dst.dev = loopback_dev;
+        ip6_prohibit_entry.rt6i_idev = in6_dev_get(loopback_dev);
+        ip6_blk_hole_entry.u.dst.dev = loopback_dev;
+        ip6_blk_hole_entry.rt6i_idev = in6_dev_get(loopback_dev);
 #endif
 
         register_netdevice_notifier(&ipv6_dev_notf);
@@ -4276,7 +4279,7 @@ void __exit addrconf_cleanup(void)
                         continue;
                 addrconf_ifdown(dev, 1);
         }
-        addrconf_ifdown(&loopback_dev, 2);
+        addrconf_ifdown(loopback_dev, 2);
 
         /*
          *      Check hash table.