net/mlx5: Fix rtable reference leak

If the rt entry gateway family is not AF_INET for multipath device,
rtable reference is leaked.
Hence, fix it by releasing the reference.

Fixes: e253671c3113 ("net/mlx5e: Use hint to resolve route when in HW multipath mode")
Fixes: c4ba17af1913 ("net/mlx5e: Support tunnel encap over tagged Ethernet")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
index f8ee18b4da6fa92818f515a30de826d183558475..13af72556987ffe6ffd5dbf2a32d240a1a545cc0 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -97,15 +97,19 @@ static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
        if (ret)
                return ret;
 
-       if (mlx5_lag_is_multipath(mdev) && rt->rt_gw_family != AF_INET)
+       if (mlx5_lag_is_multipath(mdev) && rt->rt_gw_family != AF_INET) {
+               ip_rt_put(rt);
                return -ENETUNREACH;
+       }
 #else
        return -EOPNOTSUPP;
 #endif
 
        ret = get_route_and_out_devs(priv, rt->dst.dev, route_dev, out_dev);
-       if (ret < 0)
+       if (ret < 0) {
+               ip_rt_put(rt);
                return ret;
+       }
 
        if (!(*out_ttl))
                *out_ttl = ip4_dst_hoplimit(&rt->dst);
@@ -149,8 +153,10 @@ static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
                *out_ttl = ip6_dst_hoplimit(dst);
 
        ret = get_route_and_out_devs(priv, dst->dev, route_dev, out_dev);
-       if (ret < 0)
+       if (ret < 0) {
+               dst_release(dst);
                return ret;
+       }
 #else
        return -EOPNOTSUPP;
 #endif