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/*
* Copyright (c) 2004-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
*/
#include "dev/net/pktfifo.hh"
#include "base/logging.hh"
using namespace std;
bool
PacketFifo::copyout(void *dest, unsigned offset, unsigned len)
{
char *data = (char *)dest;
if (offset + len >= size())
return false;
iterator i = fifo.begin();
iterator end = fifo.end();
while (len > 0) {
EthPacketPtr &pkt = i->packet;
while (offset >= pkt->length) {
offset -= pkt->length;
++i;
}
if (i == end)
panic("invalid fifo");
unsigned size = min(pkt->length - offset, len);
memcpy(data, pkt->data, size);
offset = 0;
len -= size;
data += size;
++i;
}
return true;
}
void
PacketFifoEntry::serialize(const string &base, CheckpointOut &cp) const
{
packet->serialize(base + ".packet", cp);
paramOut(cp, base + ".slack", slack);
paramOut(cp, base + ".number", number);
paramOut(cp, base + ".priv", priv);
}
void
PacketFifoEntry::unserialize(const string &base, CheckpointIn &cp)
{
packet = make_shared<EthPacketData>();
packet->unserialize(base + ".packet", cp);
paramIn(cp, base + ".slack", slack);
paramIn(cp, base + ".number", number);
paramIn(cp, base + ".priv", priv);
}
void
PacketFifo::serialize(const string &base, CheckpointOut &cp) const
{
paramOut(cp, base + ".size", _size);
paramOut(cp, base + ".maxsize", _maxsize);
paramOut(cp, base + ".reserved", _reserved);
paramOut(cp, base + ".packets", fifo.size());
int i = 0;
for (const auto &entry : fifo)
entry.serialize(csprintf("%s.entry%d", base, i++), cp);
}
void
PacketFifo::unserialize(const string &base, CheckpointIn &cp)
{
paramIn(cp, base + ".size", _size);
// paramIn(cp, base + ".maxsize", _maxsize);
paramIn(cp, base + ".reserved", _reserved);
int fifosize;
paramIn(cp, base + ".packets", fifosize);
fifo.clear();
for (int i = 0; i < fifosize; ++i) {
PacketFifoEntry entry;
entry.unserialize(csprintf("%s.entry%d", base, i), cp);
fifo.push_back(entry);
}
}
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