mlxsw: spectrum_router: Extract mlxsw_sp_netdevice_ipip_can_offload()

Some of the code down the road needs this logic as well.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 9672933..97f062a 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -1326,18 +1326,28 @@ mlxsw_sp_ipip_entry_find_by_ol_dev(struct mlxsw_sp *mlxsw_sp,
        return NULL;
 }
 
+static bool mlxsw_sp_netdevice_ipip_can_offload(struct mlxsw_sp *mlxsw_sp,
+                                               const struct net_device *ol_dev,
+                                               enum mlxsw_sp_ipip_type ipipt)
+{
+       const struct mlxsw_sp_ipip_ops *ops
+               = mlxsw_sp->router->ipip_ops_arr[ipipt];
+
+       /* For deciding whether decap should be offloaded, we don't care about
+        * overlay protocol, so ask whether either one is supported.
+        */
+       return ops->can_offload(mlxsw_sp, ol_dev, MLXSW_SP_L3_PROTO_IPV4) ||
+              ops->can_offload(mlxsw_sp, ol_dev, MLXSW_SP_L3_PROTO_IPV6);
+}
+
 static int mlxsw_sp_netdevice_ipip_ol_reg_event(struct mlxsw_sp *mlxsw_sp,
                                                struct net_device *ol_dev)
 {
-       struct mlxsw_sp_router *router = mlxsw_sp->router;
        struct mlxsw_sp_ipip_entry *ipip_entry;
        enum mlxsw_sp_ipip_type ipipt;
 
        mlxsw_sp_netdev_ipip_type(mlxsw_sp, ol_dev, &ipipt);
-       if (router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, ol_dev,
-                                                    MLXSW_SP_L3_PROTO_IPV4) ||
-           router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, ol_dev,
-                                                    MLXSW_SP_L3_PROTO_IPV6)) {
+       if (mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, ipipt)) {
                ipip_entry = mlxsw_sp_ipip_entry_create(mlxsw_sp, ipipt,
                                                        ol_dev);
                if (IS_ERR(ipip_entry))