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net: introduce NETDEV_UNREGISTER_PERNET

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This new event is called once for each unique net namespace in batched
unregister operations (with the argument set to a random device from
that namespace) and once per device in non-batched unregister
operations.

It allows us to factorize some device unregister work such as clearing the
routing cache.

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Octavian Purdila
2009-11-16 13:49:35 +00:00
committed by David S. Miller
parent fccaf71011
commit 395264d509
2 changed files with 28 additions and 2 deletions
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include/linux/notifier.h
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@@ -202,6 +202,7 @@ static inline int notifier_to_errno(int ret)
#define NETDEV_BONDING_OLDTYPE 0x000E
#define NETDEV_BONDING_NEWTYPE 0x000F
#define NETDEV_POST_INIT 0x0010
#define NETDEV_UNREGISTER_PERNET 0x0011
#define SYS_DOWN 0x0001 /* Notify of system down */
#define SYS_RESTART SYS_DOWN