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| author | stephen hemminger <shemminger@vyatta.com> | 2009-11-10 07:54:47 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-10 22:26:29 -0800 |
| commit | 254245d23396aca1f9100d500163d7bd6019ab6f (patch) | |
| tree | 3176ba0db8478094d4d5187c20d00be9880d9acf | |
| parent | 856540ee3116ac04a49bc06c2f30f54dd3faf7db (diff) | |
| download | op-kernel-dev-254245d23396aca1f9100d500163d7bd6019ab6f.zip op-kernel-dev-254245d23396aca1f9100d500163d7bd6019ab6f.tar.gz | |
netdev: add netdev_continue_rcu
This adds an RCU macro for continuing search, useful for some
network devices like vlan.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/netdevice.h | 2 | ||||
| -rw-r--r-- | include/linux/rculist.h | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 465add6..083b598 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1079,6 +1079,8 @@ extern rwlock_t dev_base_lock; /* Device list lock */ list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) #define for_each_netdev_continue(net, d) \ list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) +#define for_each_netdev_continue_rcu(net, d) \ + list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) static inline struct net_device *next_net_device(struct net_device *dev) diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 5710f43..1bf0f70 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -262,6 +262,20 @@ static inline void list_splice_init_rcu(struct list_head *list, (pos) = rcu_dereference((pos)->next)) /** + * list_for_each_entry_continue_rcu - continue iteration over list of given type + * @pos: the type * to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + * + * Continue to iterate over list of given type, continuing after + * the current position. + */ +#define list_for_each_entry_continue_rcu(pos, head, member) \ + for (pos = list_entry_rcu(pos->member.next, typeof(*pos), member); \ + prefetch(pos->member.next), &pos->member != (head); \ + pos = list_entry_rcu(pos->member.next, typeof(*pos), member)) + +/** * hlist_del_rcu - deletes entry from hash list without re-initialization * @n: the element to delete from the hash list. * |
