s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *hw,
				   struct ixgbe_dcb_config *dcb_config,
				   int max_frame, u8 direction)
int ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *hw,
				   struct ixgbe_dcb_config *dcb_config,
				   int max_frame, u8 direction)