diff options
| author | David Ahern <dsa@cumulusnetworks.com> | 2015-12-16 13:20:43 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-18 14:43:38 -0500 |
| commit | 1a8524794fc7c70f44ac28e3a6e8fd637bc41f14 (patch) | |
| tree | b22904fd2471f40ae28b8a35e539f3ef8b70c0c9 | |
| parent | cc9da6cc4f56e05cc9e591459fe0192727ff58b3 (diff) | |
net: l3mdev: Add master device lookup by index
Add helper to lookup l3mdev master index given a device index.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/l3mdev.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h index 774d85b2d5d9..786226f8e77b 100644 --- a/include/net/l3mdev.h +++ b/include/net/l3mdev.h @@ -51,6 +51,24 @@ static inline int l3mdev_master_ifindex(struct net_device *dev) return ifindex; } +static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex) +{ + struct net_device *dev; + int rc = 0; + + if (likely(ifindex)) { + rcu_read_lock(); + + dev = dev_get_by_index_rcu(net, ifindex); + if (dev) + rc = l3mdev_master_ifindex_rcu(dev); + + rcu_read_unlock(); + } + + return rc; +} + /* get index of an interface to use for FIB lookups. For devices * enslaved to an L3 master device FIB lookups are based on the * master index @@ -167,6 +185,11 @@ static inline int l3mdev_master_ifindex(struct net_device *dev) return 0; } +static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex) +{ + return 0; +} + static inline int l3mdev_fib_oif_rcu(struct net_device *dev) { return dev ? dev->ifindex : 0; |