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author | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-12-10 10:35:18 +0000 |
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committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-12-10 10:35:18 +0000 |
commit | 23c961a0fd97251ee7c760bc2ff2a011a417ad9b (patch) | |
tree | 0481b7552303373cd3722156b1cef92d813de215 /src/dev/net/pktfifo.cc | |
parent | ef097ac4381ad2f14acda640ae198f04d9f7988d (diff) | |
download | gem5-23c961a0fd97251ee7c760bc2ff2a011a417ad9b.tar.xz |
dev: Move network devices to src/dev/net/
--HG--
rename : src/dev/Ethernet.py => src/dev/net/Ethernet.py
rename : src/dev/etherbus.cc => src/dev/net/etherbus.cc
rename : src/dev/etherbus.hh => src/dev/net/etherbus.hh
rename : src/dev/etherdevice.cc => src/dev/net/etherdevice.cc
rename : src/dev/etherdevice.hh => src/dev/net/etherdevice.hh
rename : src/dev/etherdump.cc => src/dev/net/etherdump.cc
rename : src/dev/etherdump.hh => src/dev/net/etherdump.hh
rename : src/dev/etherint.cc => src/dev/net/etherint.cc
rename : src/dev/etherint.hh => src/dev/net/etherint.hh
rename : src/dev/etherlink.cc => src/dev/net/etherlink.cc
rename : src/dev/etherlink.hh => src/dev/net/etherlink.hh
rename : src/dev/etherobject.hh => src/dev/net/etherobject.hh
rename : src/dev/etherpkt.cc => src/dev/net/etherpkt.cc
rename : src/dev/etherpkt.hh => src/dev/net/etherpkt.hh
rename : src/dev/ethertap.cc => src/dev/net/ethertap.cc
rename : src/dev/ethertap.hh => src/dev/net/ethertap.hh
rename : src/dev/i8254xGBe.cc => src/dev/net/i8254xGBe.cc
rename : src/dev/i8254xGBe.hh => src/dev/net/i8254xGBe.hh
rename : src/dev/i8254xGBe_defs.hh => src/dev/net/i8254xGBe_defs.hh
rename : src/dev/multi_etherlink.cc => src/dev/net/multi_etherlink.cc
rename : src/dev/multi_etherlink.hh => src/dev/net/multi_etherlink.hh
rename : src/dev/multi_iface.cc => src/dev/net/multi_iface.cc
rename : src/dev/multi_iface.hh => src/dev/net/multi_iface.hh
rename : src/dev/multi_packet.cc => src/dev/net/multi_packet.cc
rename : src/dev/multi_packet.hh => src/dev/net/multi_packet.hh
rename : src/dev/ns_gige.cc => src/dev/net/ns_gige.cc
rename : src/dev/ns_gige.hh => src/dev/net/ns_gige.hh
rename : src/dev/ns_gige_reg.h => src/dev/net/ns_gige_reg.h
rename : src/dev/pktfifo.cc => src/dev/net/pktfifo.cc
rename : src/dev/pktfifo.hh => src/dev/net/pktfifo.hh
rename : src/dev/sinic.cc => src/dev/net/sinic.cc
rename : src/dev/sinic.hh => src/dev/net/sinic.hh
rename : src/dev/sinicreg.hh => src/dev/net/sinicreg.hh
rename : src/dev/tcp_iface.cc => src/dev/net/tcp_iface.cc
rename : src/dev/tcp_iface.hh => src/dev/net/tcp_iface.hh
Diffstat (limited to 'src/dev/net/pktfifo.cc')
-rw-r--r-- | src/dev/net/pktfifo.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/dev/net/pktfifo.cc b/src/dev/net/pktfifo.cc new file mode 100644 index 000000000..af4dbf412 --- /dev/null +++ b/src/dev/net/pktfifo.cc @@ -0,0 +1,116 @@ +/* + * 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/misc.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>(16384); + 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); + } +} |