diff options
| -rw-r--r-- | include/net/l3mdev.h | 22 | ||||
| -rw-r--r-- | net/l3mdev/l3mdev.c | 18 |
2 files changed, 40 insertions, 0 deletions
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h index 3832099289c5..78fa0ac4613c 100644 --- a/include/net/l3mdev.h +++ b/include/net/l3mdev.h @@ -101,6 +101,17 @@ struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev) return master; } +int l3mdev_master_upper_ifindex_by_index_rcu(struct net *net, int ifindex); +static inline +int l3mdev_master_upper_ifindex_by_index(struct net *net, int ifindex) +{ + rcu_read_lock(); + ifindex = l3mdev_master_upper_ifindex_by_index_rcu(net, ifindex); + rcu_read_unlock(); + + return ifindex; +} + u32 l3mdev_fib_table_rcu(const struct net_device *dev); u32 l3mdev_fib_table_by_index(struct net *net, int ifindex); static inline u32 l3mdev_fib_table(const struct net_device *dev) @@ -208,6 +219,17 @@ static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex) } static inline +int l3mdev_master_upper_ifindex_by_index_rcu(struct net *net, int ifindex) +{ + return 0; +} +static inline +int l3mdev_master_upper_ifindex_by_index(struct net *net, int ifindex) +{ + return 0; +} + +static inline struct net_device *l3mdev_master_dev_rcu(const struct net_device *dev) { return NULL; diff --git a/net/l3mdev/l3mdev.c b/net/l3mdev/l3mdev.c index 8da86ceca33d..309dee76724e 100644 --- a/net/l3mdev/l3mdev.c +++ b/net/l3mdev/l3mdev.c @@ -47,6 +47,24 @@ int l3mdev_master_ifindex_rcu(const struct net_device *dev) EXPORT_SYMBOL_GPL(l3mdev_master_ifindex_rcu); /** + * l3mdev_master_upper_ifindex_by_index - get index of upper l3 master + * device + * @net: network namespace for device index lookup + * @ifindex: targeted interface + */ +int l3mdev_master_upper_ifindex_by_index_rcu(struct net *net, int ifindex) +{ + struct net_device *dev; + + dev = dev_get_by_index_rcu(net, ifindex); + while (dev && !netif_is_l3_master(dev)) + dev = netdev_master_upper_dev_get(dev); + + return dev ? dev->ifindex : 0; +} +EXPORT_SYMBOL_GPL(l3mdev_master_upper_ifindex_by_index_rcu); + +/** * l3mdev_fib_table - get FIB table id associated with an L3 * master interface * @dev: targeted interface |