Add lookup of cached IPv6 route to l3mdev operations.
Signed-off-by: David Ahern <d...@cumulusnetworks.com>
---
include/net/l3mdev.h | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index 8befd629f8ac..2ee593662ef4 100644
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -19,12 +19,16 @@
* @l3mdev_fib_table: Get FIB table id to use for lookups
*
* @l3dev_get_rtable: Get cached IPv4 rtable (dst_entry) for device
+ *
+ * @l3dev_rt6_dst: Get cached IPv6 rt6_info (dst_entry) for device
*/
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);
+ struct dst_entry * (*l3mdev_rt6_dst)(const struct net_device *dev,
+ const struct flowi6 *fl6);
};
#ifdef CONFIG_NET_L3_MASTER_DEV
@@ -84,6 +88,33 @@ static inline struct rtable *l3mdev_get_rtable(const struct
net_device *dev,
return NULL;
}
+/* netif_is_l3_master already checked by caller */
+static inline struct dst_entry *l3mdev_rt6_dst(const struct net_device *dev,
+ const struct flowi6 *fl6)
+{
+ if (dev->l3mdev_ops->l3mdev_rt6_dst)
+ return dev->l3mdev_ops->l3mdev_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) {
+ if (netif_is_l3_master(dev))
+ dst = l3mdev_rt6_dst(dev, fl6);
+ dev_put(dev);
+ }
+
+ return dst;
+}
+
static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
{
struct net_device *dev;
@@ -141,6 +172,18 @@ static inline struct rtable *l3mdev_get_rtable(const
struct net_device *dev,
{
return NULL;
}
+static inline
+struct dst_entry *l3mdev_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;
+}
static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
{
--
1.9.1
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