net: Propagate lookup failure in l3mdev_get_saddr to caller

[karo-tx-linux.git] / include / net / l3mdev.h

diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index 774d85b2d5d97734b79eadea20f090ebf684b057..5689a0c749f76cd7ce5810b6ac165e43ddb0b59d 100644 (file)
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -29,7 +29,7 @@ struct l3mdev_ops {
        /* IPv4 ops */
        struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev,
                                             const struct flowi4 *fl4);
-       void            (*l3mdev_get_saddr)(struct net_device *dev,
+       int             (*l3mdev_get_saddr)(struct net_device *dev,
                                            struct flowi4 *fl4);
 
        /* IPv6 ops */
@@ -112,10 +112,11 @@ 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)
+static inline int l3mdev_get_saddr(struct net *net, int ifindex,
+                                  struct flowi4 *fl4)
 {
        struct net_device *dev;
+       int rc = 0;
 
        if (ifindex) {
 
@@ -124,11 +125,13 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex,
                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);
+                       rc = dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4);
                }
 
                rcu_read_unlock();
        }
+
+       return rc;
 }
 
 static inline struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,
@@ -200,9 +203,10 @@ 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)
+static inline int l3mdev_get_saddr(struct net *net, int ifindex,
+                                  struct flowi4 *fl4)
 {
+       return 0;
 }
 
 static inline