Support Ethernet and Broad-R Reach TX and RX

include/icsneo/communication/message/ethernetmessage.h

@@ -0,0 +1,48 @@
+#ifndef __ETHERNETMESSAGE_H_
+#define __ETHERNETMESSAGE_H_
+
+#include "icsneo/communication/message/message.h"
+
+// Used for MACAddress.toString() only
+#include <sstream>
+#include <iomanip>
+
+namespace icsneo {
+
+struct MACAddress {
+	uint8_t data[6];
+
+	// Helpers
+	std::string toString() const {
+		std::stringstream ss;
+		for(size_t i = 0; i < 6; i++) {
+			ss << std::hex << std::setw(2) << std::setfill('0') << (int)data[i];
+			if(i != 5)
+				ss << ':';
+		}
+		return ss.str();
+	}
+
+	friend std::ostream& operator<<(std::ostream& os, const MACAddress& mac) {
+		os << mac.toString();
+		return os;
+	}
+};
+
+class EthernetMessage : public Message {
+public:
+	bool preemptionEnabled = false;
+	uint8_t preemptionFlags = 0;
+	bool fcsAvailable = false;
+	bool frameTooShort = false;
+	bool noPadding = false;
+
+	// Accessors
+	const MACAddress& getDestinationMAC() const { return *(const MACAddress*)(data.data() + 0); }
+	const MACAddress& getSourceMAC() const { return *(const MACAddress*)(data.data() + 6); }
+	uint16_t getEtherType() const { return (data[12] << 8) | data[13]; }
+};
+
+}
+
+#endif