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30 * Device module for modelling an ethernet hub
38 #include "base/trace.hh"
39 #include "dev/etherbus.hh"
40 #include "dev/etherdump.hh"
41 #include "dev/etherint.hh"
42 #include "dev/etherpkt.hh"
43 #include "sim/builder.hh"
44 #include "sim/universe.hh"
48 EtherBus::EtherBus(const string
&name
, double speed
, bool loop
,
49 EtherDump
*packet_dump
)
50 : SimObject(name
), ticksPerByte(speed
), loopback(loop
),
51 event(&mainEventQueue
, this), sender(0), dump(packet_dump
)
58 devlist_t::iterator i
= devlist
.begin();
59 devlist_t::iterator end
= devlist
.end();
61 DPRINTF(Ethernet
, "ethernet packet received: length=%d\n", packet
->length
);
62 DDUMP(EthernetData
, packet
->data
, packet
->length
);
65 if (loopback
|| *i
!= sender
)
66 (*i
)->sendPacket(packet
);
80 EtherBus::reg(EtherInt
*dev
)
81 { devlist
.push_back(dev
); }
84 EtherBus::send(EtherInt
*sndr
, PacketPtr
&pkt
)
87 DPRINTF(Ethernet
, "ethernet packet not sent, bus busy\n", curTick
);
91 DPRINTF(Ethernet
, "ethernet packet sent: length=%d\n", pkt
->length
);
92 DDUMP(EthernetData
, pkt
->data
, pkt
->length
);
96 int delay
= (int)ceil(((double)pkt
->length
* ticksPerByte
) + 1.0);
97 DPRINTF(Ethernet
, "scheduling packet: delay=%d, (rate=%f)\n",
99 event
.schedule(curTick
+ delay
);
104 BEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherBus
)
106 Param
<bool> loopback
;
108 SimObjectParam
<EtherDump
*> packet_dump
;
110 END_DECLARE_SIM_OBJECT_PARAMS(EtherBus
)
112 BEGIN_INIT_SIM_OBJECT_PARAMS(EtherBus
)
114 INIT_PARAM(loopback
, "send the packet back to the sending interface"),
115 INIT_PARAM(speed
, "bus speed in ticks per byte"),
116 INIT_PARAM(packet_dump
, "object to dump network packets to")
118 END_INIT_SIM_OBJECT_PARAMS(EtherBus
)
120 CREATE_SIM_OBJECT(EtherBus
)
122 return new EtherBus(getInstanceName(), speed
, loopback
, packet_dump
);
125 REGISTER_SIM_OBJECT("EtherBus", EtherBus
)