mlx5: use tc_cls_can_offload_and_chain0()

Make use of tc_cls_can_offload_and_chain0() to set extack msg in case
ethtool tc offload flag is not set or chain unsupported.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -2944,9 +2944,6 @@ static int mlx5e_setup_tc_mqprio(struct net_device *netdev,
 static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
 				     struct tc_cls_flower_offload *cls_flower)
 {
-	if (cls_flower->common.chain_index)
-		return -EOPNOTSUPP;
-
 	switch (cls_flower->command) {
 	case TC_CLSFLOWER_REPLACE:
 		return mlx5e_configure_flower(priv, cls_flower);
@@ -2964,7 +2961,7 @@ int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 {
 	struct mlx5e_priv *priv = cb_priv;
 
-	if (!tc_can_offload(priv->netdev))
+	if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data))
 		return -EOPNOTSUPP;
 
 	switch (type) {

drivers/net/ethernet/mellanox/mlx5/core/en_rep.c

@@ -719,9 +719,6 @@ static int
 mlx5e_rep_setup_tc_cls_flower(struct mlx5e_priv *priv,
 			      struct tc_cls_flower_offload *cls_flower)
 {
-	if (cls_flower->common.chain_index)
-		return -EOPNOTSUPP;
-
 	switch (cls_flower->command) {
 	case TC_CLSFLOWER_REPLACE:
 		return mlx5e_configure_flower(priv, cls_flower);
@@ -739,7 +736,7 @@ static int mlx5e_rep_setup_tc_cb(enum tc_setup_type type, void *type_data,
 {
 	struct mlx5e_priv *priv = cb_priv;
 
-	if (!tc_can_offload(priv->netdev))
+	if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data))
 		return -EOPNOTSUPP;
 
 	switch (type) {