diff options
| author | David Ahern <dsa@cumulusnetworks.com> | 2016-10-17 19:15:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-18 11:44:58 -0400 |
| commit | 1a3f060c1a47dba4e12ac21ce62b57666b9c4e95 (patch) | |
| tree | e0293fad952087cce74a7d4badac11e3ce3ee4b6 /include | |
| parent | 790510d99f39cee7f275d001aa5024032ed9bb48 (diff) | |
net: Introduce new api for walking upper and lower devices
This patch introduces netdev_walk_all_upper_dev_rcu,
netdev_walk_all_lower_dev and netdev_walk_all_lower_dev_rcu. These
functions recursively walk the adj_list of devices to determine all upper
and lower devices.
The functions take a callback function that is invoked for each device
in the list. If the callback returns non-0, the walk is terminated and
the functions return that code back to callers.
v3
- simplified netdev_has_upper_dev_all_rcu and __netdev_has_upper_dev and
removed typecast as suggested by Stephen
v2
- fixed definition of netdev_next_lower_dev_rcu to mirror the upper_dev
version.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index bf341b65ca5e..a5902d995907 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3778,6 +3778,14 @@ struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, updev; \ updev = netdev_all_upper_get_next_dev_rcu(dev, &(iter))) +int netdev_walk_all_upper_dev_rcu(struct net_device *dev, + int (*fn)(struct net_device *upper_dev, + void *data), + void *data); + +bool netdev_has_upper_dev_all_rcu(struct net_device *dev, + struct net_device *upper_dev); + void *netdev_lower_get_next_private(struct net_device *dev, struct list_head **iter); void *netdev_lower_get_next_private_rcu(struct net_device *dev, @@ -3821,6 +3829,15 @@ struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, ldev; \ ldev = netdev_all_lower_get_next_rcu(dev, &(iter))) +int netdev_walk_all_lower_dev(struct net_device *dev, + int (*fn)(struct net_device *lower_dev, + void *data), + void *data); +int netdev_walk_all_lower_dev_rcu(struct net_device *dev, + int (*fn)(struct net_device *lower_dev, + void *data), + void *data); + void *netdev_adjacent_get_private(struct list_head *adj_list); void *netdev_lower_get_first_private_rcu(struct net_device *dev); struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |