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net: push loops and nb calls into helper functions

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Push iterations over net namespaces and netdevices from
register_netdevice_notifier() and unregister_netdevice_notifier()
into helper functions. Along with that introduce continue_reverse macros
to make the code a bit nicer allowing to get rid of "last" marks.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2019-10-02 11:48:44 -04:00
committed by David S. Miller
parent c01ebd6c46
commit afa0df5998
3 changed files with 66 additions and 29 deletions
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include/net/net_namespace.h
+2 -1
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@@ -317,7 +317,8 @@ static inline struct net *read_pnet(const possible_net_t *pnet)
/* Protected by net_rwsem */
#define for_each_net(VAR) \
list_for_each_entry(VAR, &net_namespace_list, list)
#define for_each_net_continue_reverse(VAR) \
list_for_each_entry_continue_reverse(VAR, &net_namespace_list, list)
#define for_each_net_rcu(VAR) \
list_for_each_entry_rcu(VAR, &net_namespace_list, list)