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Commit 1a852479 authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

net: l3mdev: Add master device lookup by index 



Add helper to lookup l3mdev master index given a device index.

Signed-off-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc9da6cc

include/net/l3mdev.h

+23 −0
Original line number Diff line number Diff line
@@ -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;