ethertap.hh (12054:ab04045965d1) | ethertap.hh (12055:945e851d846b) |
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1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 33 unchanged lines hidden (view full) --- 42#include "dev/net/etherint.hh" 43#include "dev/net/etherobject.hh" 44#include "dev/net/etherpkt.hh" 45#include "params/EtherTapStub.hh" 46#include "sim/eventq.hh" 47#include "sim/sim_object.hh" 48 49class TapEvent; | 1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 33 unchanged lines hidden (view full) --- 42#include "dev/net/etherint.hh" 43#include "dev/net/etherobject.hh" 44#include "dev/net/etherpkt.hh" 45#include "params/EtherTapStub.hh" 46#include "sim/eventq.hh" 47#include "sim/sim_object.hh" 48 49class TapEvent; |
50class TapListener; | |
51class EtherTapInt; 52 | 50class EtherTapInt; 51 |
53/* 54 * Interface to connect a simulated ethernet device to the real world. An 55 * external helper program bridges between this object's TCP port and a 56 * source/sink for Ethernet frames. Each frame going in either direction is 57 * prepended with the frame's length in a 32 bit integer in network byte order. 58 */ 59class EtherTapStub : public EtherObject | 52class EtherTapBase : public EtherObject |
60{ | 53{ |
61 protected: 62 friend class TapEvent; 63 TapEvent *event; | 54 public: 55 typedef EtherTapBaseParams Params; 56 EtherTapBase(const Params *p); 57 virtual ~EtherTapBase(); |
64 | 58 |
59 const Params * 60 params() const 61 { 62 return dynamic_cast<const Params *>(_params); 63 } 64 65 void serialize(CheckpointOut &cp) const override; 66 void unserialize(CheckpointIn &cp) override; 67 |
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65 protected: | 68 protected: |
66 friend class TapListener; 67 TapListener *listener; 68 int socket; 69 char *buffer; | 69 uint8_t *buffer; |
70 int buflen; | 70 int buflen; |
71 uint32_t buffer_offset; 72 uint32_t data_len; | |
73 74 EtherDump *dump; 75 | 71 72 EtherDump *dump; 73 |
76 void attach(int fd); 77 void detach(); | |
78 | 74 |
75 /* 76 * Interface to the real network. 77 */ |
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79 protected: | 78 protected: |
80 std::string device; 81 std::queue<EthPacketPtr> packetBuffer; 82 EtherTapInt *interface; | 79 friend class TapEvent; 80 TapEvent *event; 81 void pollFd(int fd); 82 void stopPolling(); |
83 | 83 |
84 void process(int revent); 85 void enqueue(EthPacketData *packet); 86 void retransmit(); | 84 // Receive data from the real network. 85 virtual void recvReal(int revent) = 0; 86 // Prepare and send data out to the real network. 87 virtual bool sendReal(const void *data, size_t len) = 0; |
87 | 88 |
89 |
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88 /* | 90 /* |
91 * Interface to the simulated network. |
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89 */ | 92 */ |
93 protected: 94 EtherTapInt *interface; 95 96 public: 97 EtherInt *getEthPort(const std::string &if_name, int idx) override; 98 99 bool recvSimulated(EthPacketPtr packet); 100 void sendSimulated(void *data, size_t len); 101 102 protected: 103 std::queue<EthPacketPtr> packetBuffer; 104 void retransmit(); 105 |
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90 class TxEvent : public Event 91 { 92 protected: | 106 class TxEvent : public Event 107 { 108 protected: |
93 EtherTapStub *tap; | 109 EtherTapBase *tap; |
94 95 public: | 110 111 public: |
96 TxEvent(EtherTapStub *_tap) : tap(_tap) {} | 112 TxEvent(EtherTapBase *_tap) : tap(_tap) {} |
97 void process() { tap->retransmit(); } 98 virtual const char *description() const | 113 void process() { tap->retransmit(); } 114 virtual const char *description() const |
99 { return "EtherTapStub retransmit"; } | 115 { return "EtherTapBase retransmit"; } |
100 }; 101 102 friend class TxEvent; 103 TxEvent txEvent; | 116 }; 117 118 friend class TxEvent; 119 TxEvent txEvent; |
120}; |
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104 | 121 |
122class EtherTapInt : public EtherInt 123{ 124 private: 125 EtherTapBase *tap; |
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105 public: | 126 public: |
127 EtherTapInt(const std::string &name, EtherTapBase *t) : 128 EtherInt(name), tap(t) 129 { } 130 131 bool recvPacket(EthPacketPtr pkt) override 132 { return tap->recvSimulated(pkt); } 133 void sendDone() override {} 134}; 135 136 137class TapListener; 138 139/* 140 * Interface to connect a simulated ethernet device to the real world. An 141 * external helper program bridges between this object's TCP port and a 142 * source/sink for Ethernet frames. Each frame going in either direction is 143 * prepended with the frame's length in a 32 bit integer in network byte order. 144 */ 145class EtherTapStub : public EtherTapBase 146{ 147 public: |
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106 typedef EtherTapStubParams Params; 107 EtherTapStub(const Params *p); | 148 typedef EtherTapStubParams Params; 149 EtherTapStub(const Params *p); |
108 virtual ~EtherTapStub(); | 150 ~EtherTapStub(); |
109 110 const Params * 111 params() const 112 { 113 return dynamic_cast<const Params *>(_params); 114 } 115 | 151 152 const Params * 153 params() const 154 { 155 return dynamic_cast<const Params *>(_params); 156 } 157 |
116 EtherInt *getEthPort(const std::string &if_name, int idx) override; 117 118 virtual bool recvPacket(EthPacketPtr packet); 119 virtual void sendDone(); 120 | |
121 void serialize(CheckpointOut &cp) const override; 122 void unserialize(CheckpointIn &cp) override; | 158 void serialize(CheckpointOut &cp) const override; 159 void unserialize(CheckpointIn &cp) override; |
123}; | |
124 | 160 |
125class EtherTapInt : public EtherInt 126{ 127 private: 128 EtherTapStub *tap; 129 public: 130 EtherTapInt(const std::string &name, EtherTapStub *t) 131 : EtherInt(name), tap(t) 132 { } | |
133 | 161 |
134 virtual bool recvPacket(EthPacketPtr pkt) { return tap->recvPacket(pkt); } 135 virtual void sendDone() { tap->sendDone(); } | 162 protected: 163 friend class TapListener; 164 TapListener *listener; 165 166 int socket; 167 168 void attach(int fd); 169 void detach(); 170 171 uint32_t buffer_used; 172 uint32_t frame_len; 173 174 void recvReal(int revent) override; 175 bool sendReal(const void *data, size_t len) override; |
136}; 137 138 139#endif // __DEV_NET_ETHERTAP_HH__ | 176}; 177 178 179#endif // __DEV_NET_ETHERTAP_HH__ |