Commit ccf3c8c3 authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

net: Add IPv6 support to l3mdev 



Add operations to retrieve cached IPv6 dst entry from l3mdev device
and lookup IPv6 source address.

Signed-off-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent af379392

include/net/l3mdev.h

+46 −0
Original line number Diff line number Diff line
@@ -19,14 +19,22 @@ 
 * @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device

 *

 * @l3mdev_get_saddr: Get source address for a flow

 *

 * @l3mdev_get_rt6_dst: Get cached IPv6 rt6_info (dst_entry) for device

 */



struct l3mdev_ops {

	u32		(*l3mdev_fib_table)(const struct net_device *dev);



	/* IPv4 ops */

	struct rtable *	(*l3mdev_get_rtable)(const struct net_device *dev,

					     const struct flowi4 *fl4);

	void		(*l3mdev_get_saddr)(struct net_device *dev,

					    struct flowi4 *fl4);



	/* IPv6 ops */

	struct dst_entry * (*l3mdev_get_rt6_dst)(const struct net_device *dev,

						 const struct flowi6 *fl6);

};



#ifdef CONFIG_NET_L3_MASTER_DEV
@@ -123,6 +131,31 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex, 
	}

}



static inline struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,

						   const struct flowi6 *fl6)

{

	if (netif_is_l3_master(dev) && dev->l3mdev_ops->l3mdev_get_rt6_dst)

		return dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6);



	return NULL;

}



static inline

struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,

					const struct flowi6 *fl6)

{

	struct dst_entry *dst = NULL;

	struct net_device *dev;



	dev = dev_get_by_index(net, fl6->flowi6_oif);

	if (dev) {

		dst = l3mdev_get_rt6_dst(dev, fl6);

		dev_put(dev);

	}



	return dst;

}



#else



static inline int l3mdev_master_ifindex_rcu(struct net_device *dev)
@@ -171,6 +204,19 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex, 
				    struct flowi4 *fl4)

{

}



static inline

struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,

				     const struct flowi6 *fl6)

{

	return NULL;

}

static inline

struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,

					const struct flowi6 *fl6)

{

	return NULL;

}

#endif



#endif /* _NET_L3MDEV_H_ */