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: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 46 additions and 0 deletions
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@ -19,14 +19,22 @@
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* @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device
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* @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device
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*
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*
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* @l3mdev_get_saddr: Get source address for a flow
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* @l3mdev_get_saddr: Get source address for a flow
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*
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* @l3mdev_get_rt6_dst: Get cached IPv6 rt6_info (dst_entry) for device
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*/
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*/
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struct l3mdev_ops {
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struct l3mdev_ops {
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u32 (*l3mdev_fib_table)(const struct net_device *dev);
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u32 (*l3mdev_fib_table)(const struct net_device *dev);
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/* IPv4 ops */
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struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev,
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struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev,
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const struct flowi4 *fl4);
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const struct flowi4 *fl4);
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void (*l3mdev_get_saddr)(struct net_device *dev,
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void (*l3mdev_get_saddr)(struct net_device *dev,
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struct flowi4 *fl4);
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struct flowi4 *fl4);
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/* IPv6 ops */
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struct dst_entry * (*l3mdev_get_rt6_dst)(const struct net_device *dev,
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const struct flowi6 *fl6);
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};
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};
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#ifdef CONFIG_NET_L3_MASTER_DEV
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#ifdef CONFIG_NET_L3_MASTER_DEV
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@ -123,6 +131,31 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex,
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}
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}
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}
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}
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static inline struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,
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const struct flowi6 *fl6)
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{
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if (netif_is_l3_master(dev) && dev->l3mdev_ops->l3mdev_get_rt6_dst)
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return dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6);
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return NULL;
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}
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static inline
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struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,
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const struct flowi6 *fl6)
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{
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struct dst_entry *dst = NULL;
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struct net_device *dev;
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dev = dev_get_by_index(net, fl6->flowi6_oif);
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if (dev) {
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dst = l3mdev_get_rt6_dst(dev, fl6);
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dev_put(dev);
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}
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return dst;
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}
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#else
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#else
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static inline int l3mdev_master_ifindex_rcu(struct net_device *dev)
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static inline int l3mdev_master_ifindex_rcu(struct net_device *dev)
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@ -171,6 +204,19 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex,
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struct flowi4 *fl4)
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struct flowi4 *fl4)
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{
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{
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}
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}
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static inline
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struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,
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const struct flowi6 *fl6)
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{
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return NULL;
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}
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static inline
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struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,
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const struct flowi6 *fl6)
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{
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return NULL;
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}
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#endif
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#endif
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#endif /* _NET_L3MDEV_H_ */
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#endif /* _NET_L3MDEV_H_ */
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