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authorDavid Ahern <dsa@cumulusnetworks.com>2015-10-05 08:51:26 -0700
committerDavid S. Miller <davem@davemloft.net>2015-10-07 04:27:44 -0700
commit8cbb512c923d5f695ff6265b2b741b1718e3b444 (patch)
tree194de9f9c5ec859456dc8274136fcda881dc8408 /include/net/l3mdev.h
parent3ce58d84358c7b477811b5100152fad848f936fc (diff)
net: Add source address lookup op for VRF
Add operation to l3mdev to lookup source address for a given flow. Add support for the operation to VRF driver and convert existing IPv4 hooks to use the new lookup. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/l3mdev.h')
-rw-r--r--include/net/l3mdev.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index 87cee05a0a17..44a19a171104 100644
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -17,12 +17,16 @@
* @l3mdev_fib_table: Get FIB table id to use for lookups
*
* @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device
+ *
+ * @l3mdev_get_saddr: Get source address for a flow
*/
struct l3mdev_ops {
u32 (*l3mdev_fib_table)(const struct net_device *dev);
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);
};
#ifdef CONFIG_NET_L3_MASTER_DEV
@@ -100,6 +104,25 @@ static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
return rc;
}
+static inline void l3mdev_get_saddr(struct net *net, int ifindex,
+ struct flowi4 *fl4)
+{
+ struct net_device *dev;
+
+ if (ifindex) {
+
+ rcu_read_lock();
+
+ dev = dev_get_by_index_rcu(net, ifindex);
+ if (dev && netif_is_l3_master(dev) &&
+ dev->l3mdev_ops->l3mdev_get_saddr) {
+ dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4);
+ }
+
+ rcu_read_unlock();
+ }
+}
+
#else
static inline int l3mdev_master_ifindex_rcu(struct net_device *dev)
@@ -144,6 +167,10 @@ static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
return false;
}
+static inline void l3mdev_get_saddr(struct net *net, int ifindex,
+ struct flowi4 *fl4)
+{
+}
#endif
#endif /* _NET_L3MDEV_H_ */