2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
32 * Device module for modelling an ethernet hub
40 #include "base/trace.hh"
41 #include "dev/etherbus.hh"
42 #include "dev/etherdump.hh"
43 #include "dev/etherint.hh"
44 #include "dev/etherpkt.hh"
45 #include "sim/builder.hh"
46 #include "sim/root.hh"
50 EtherBus::EtherBus(const string
&name
, double speed
, bool loop
,
51 EtherDump
*packet_dump
)
52 : SimObject(name
), ticksPerByte(speed
), loopback(loop
),
53 event(&mainEventQueue
, this), sender(0), dump(packet_dump
)
60 devlist_t::iterator i
= devlist
.begin();
61 devlist_t::iterator end
= devlist
.end();
63 DPRINTF(Ethernet
, "ethernet packet received: length=%d\n", packet
->length
);
64 DDUMP(EthernetData
, packet
->data
, packet
->length
);
67 if (loopback
|| *i
!= sender
)
68 (*i
)->sendPacket(packet
);
82 EtherBus::reg(EtherInt
*dev
)
83 { devlist
.push_back(dev
); }
86 EtherBus::send(EtherInt
*sndr
, EthPacketPtr
&pkt
)
89 DPRINTF(Ethernet
, "ethernet packet not sent, bus busy\n", curTick
);
93 DPRINTF(Ethernet
, "ethernet packet sent: length=%d\n", pkt
->length
);
94 DDUMP(EthernetData
, pkt
->data
, pkt
->length
);
98 int delay
= (int)ceil(((double)pkt
->length
* ticksPerByte
) + 1.0);
99 DPRINTF(Ethernet
, "scheduling packet: delay=%d, (rate=%f)\n",
100 delay
, ticksPerByte
);
101 event
.schedule(curTick
+ delay
);
106 BEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherBus
)
108 Param
<bool> loopback
;
110 SimObjectParam
<EtherDump
*> packet_dump
;
112 END_DECLARE_SIM_OBJECT_PARAMS(EtherBus
)
114 BEGIN_INIT_SIM_OBJECT_PARAMS(EtherBus
)
116 INIT_PARAM(loopback
, "send the packet back to the sending interface"),
117 INIT_PARAM(speed
, "bus speed in ticks per byte"),
118 INIT_PARAM(packet_dump
, "object to dump network packets to")
120 END_INIT_SIM_OBJECT_PARAMS(EtherBus
)
122 CREATE_SIM_OBJECT(EtherBus
)
124 return new EtherBus(getInstanceName(), speed
, loopback
, packet_dump
);
127 REGISTER_SIM_OBJECT("EtherBus", EtherBus
)