mlxsw: spectrum: Add support for TC flower offload statistics

Add support for TC flower offload statistics including number of packets,
bytes and last use timestamp. Currently the statistics are gathered on a
per-rule basis.

Signed-off-by: Arkadi Sharshvesky <arkadis@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.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index af43048..475499b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1434,6 +1434,9 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
 			mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress,
 						tc->cls_flower);
 			return 0;
+		case TC_CLSFLOWER_STATS:
+			return mlxsw_sp_flower_stats(mlxsw_sp_port, ingress,
+						     tc->cls_flower);
 		default:
 			return -EOPNOTSUPP;
 		}