1 files changed, 135 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/eth_packetmaker.h b/tools/ioemu/iodev/eth_packetmaker.h
new file mode 100644
index 0000000000..d442325a9f
--- /dev/null
+++ b/tools/ioemu/iodev/eth_packetmaker.h
@@ -0,0 +1,135 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id: eth_packetmaker.h,v 1.6 2002/10/25 11:44:39 bdenney Exp $
+/////////////////////////////////////////////////////////////////////////
+//
+
+#ifndef _ETH_PACKETMAKER_H_
+#define _ETH_PACKETMAKER_H_
+
+#include "../config.h"
+
+#ifdef ETH_ARPBACK
+
+#define PACKET_BUF_SIZE 2048
+static const Bit8u internal_mac[]={0xB0, 0xC4, 0x20, 0x20, 0x00, 0x00, 0x00};
+static const Bit8u external_mac[]={0xB0, 0xC4, 0x20, 0x20, 0x00, 0x00, 0x00};
+static const Bit8u external_ip[]={ 192, 168, 0, 2, 0x00 };
+static const Bit8u broadcast_mac[]={0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00};
+static const Bit8u ethtype_arp[]={0x08, 0x06, 0x00};
+static const Bit8u ethtype_ip[]={0x08, 0x00, 0x00};
+static const Bit8u prot_udp=17;
+static const Bit8u prot_tcp=6;
+
+
+class eth_packet {
+public:
+  Bit8u buf[PACKET_BUF_SIZE];
+  Bit32u len;
+};
+
+
+class eth_packetmaker {
+public:
+  virtual bx_bool getpacket(eth_packet& inpacket) = 0;
+  virtual bx_bool ishandler(const eth_packet& outpacket) = 0;
+  virtual bx_bool sendpacket(const eth_packet& outpacket) = 0;
+};
+
+
+class eth_ARPmaker : public eth_packetmaker {
+public:
+  void init(void);
+  bx_bool ishandler(const eth_packet& outpacket);
+  bx_bool sendpacket(const eth_packet& outpacket);
+  bx_bool getpacket(eth_packet& inpacket);
+private:
+  eth_packet pending;
+  bx_bool is_pending;
+};
+
+
+class eth_IPmaker : eth_packetmaker {
+public:
+  void init(void);
+  virtual bx_bool ishandler(const eth_packet& outpacket)=0;
+  virtual bx_bool sendpacket(const eth_packet& outpacket)=0;
+  virtual bx_bool getpacket(eth_packet& inpacket)=0;
+
+protected:
+  bx_bool sendable(const eth_packet& outpacket);
+
+  Bit32u source(const eth_packet& outpacket);
+  Bit32u destination(const eth_packet& outpacket);
+  Bit8u protocol(const eth_packet& outpacket);
+
+  const Bit8u * datagram(const eth_packet& outpacket);
+  Bit32u datalen(const eth_packet& outpacket);
+
+  //Build a header in pending, return header length in bytes.
+  Bit32u build_packet_header(Bit32u source, Bit32u dest, Bit8u protocol, Bit32u datalen);
+
+  eth_packet pending;
+  bx_bool is_pending;
+
+  //Bit8u Version; //=4 (4 bits)
+  //It better be!
+
+  //Bit8u IHL; //Header length in 32-bit bytes (4 bits)
+  //Used to strip layer
+
+  //Bit8u Type_of_Service; //not relevent, set to 0;
+  //Ignore on receive, set to 0 on send.
+
+  //Bit16u Total_Length;//length of the datagram in octets. use 576 or less;
+  //Use 576 or less on send.
+  //Use to get length on receive
+
+  //Bit16u Identification;//Identifier for assembling fragments
+  //Ignore, we'll drop fragments
+
+  //Bit8u Flags;//0,Don't fragment, More Fragments (vs last fragment)
+  //Set to 0 on send
+  //Drop if more fragments set.
+
+  //Bit16u Fragment Offset;//where in the datagram this fragment belongs
+  //Should be 0 for send and receive.
+
+  //Bit8u TTL;//Set to something sorta big.
+  //Shouldn't be 0 on receive
+  //Set to something big on send
+
+  //Bit8u Protocol;
+  //Defines Protocol.
+  //TCP=?, UDP=?
+
+  //Bit16u Header_Checksum;//16-bit one's complement of the one's complement
+		  //sum of all 16-bit words in header;
+  //Could check on receive, must set on send.
+
+  //Bit32u Source;//source address
+  //Bit32u Destination;//destination address
+};
+
+/*
+class eth_TCPmaker : eth_packetmaker {
+};
+
+class eth_UDPmaker : eth_packetmaker {
+};
+*/
+
+class eth_ETHmaker : public eth_packetmaker {
+public:
+  //handles all packets to a MAC addr.
+  void init(void);
+  virtual bx_bool getpacket(eth_packet& inpacket);
+  virtual bx_bool ishandler(const eth_packet& outpacket);
+  virtual bx_bool sendpacket(const eth_packet& outpacket);
+private:
+  eth_ARPmaker arper;
+};
+
+
+#endif // ETH_ARPBACK
+#endif // _ETH_PACKETMAKER_H_
+