11154SN/A/* 21762SN/A * Copyright (c) 2004-2005 The Regents of The University of Michigan 31154SN/A * All rights reserved. 41154SN/A * 51154SN/A * Redistribution and use in source and binary forms, with or without 61154SN/A * modification, are permitted provided that the following conditions are 71154SN/A * met: redistributions of source code must retain the above copyright 81154SN/A * notice, this list of conditions and the following disclaimer; 91154SN/A * redistributions in binary form must reproduce the above copyright 101154SN/A * notice, this list of conditions and the following disclaimer in the 111154SN/A * documentation and/or other materials provided with the distribution; 121154SN/A * neither the name of the copyright holders nor the names of its 131154SN/A * contributors may be used to endorse or promote products derived from 141154SN/A * this software without specific prior written permission. 151154SN/A * 161154SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 171154SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 181154SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 191154SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 201154SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 211154SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 221154SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 231154SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 241154SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 251154SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 261154SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665SN/A * 282665SN/A * Authors: Nathan Binkert 291154SN/A */ 301154SN/A 3111263Sandreas.sandberg@arm.com#include "dev/net/pktfifo.hh" 3211263Sandreas.sandberg@arm.com 3312334Sgabeblack@google.com#include "base/logging.hh" 341154SN/A 351154SN/Ausing namespace std; 361154SN/A 372186SN/Abool 386227SN/APacketFifo::copyout(void *dest, unsigned offset, unsigned len) 392186SN/A{ 402186SN/A char *data = (char *)dest; 412186SN/A if (offset + len >= size()) 422186SN/A return false; 432186SN/A 445483SN/A iterator i = fifo.begin(); 455483SN/A iterator end = fifo.end(); 462186SN/A while (len > 0) { 475483SN/A EthPacketPtr &pkt = i->packet; 485483SN/A while (offset >= pkt->length) { 495483SN/A offset -= pkt->length; 505483SN/A ++i; 512186SN/A } 522186SN/A 535483SN/A if (i == end) 542186SN/A panic("invalid fifo"); 552186SN/A 566227SN/A unsigned size = min(pkt->length - offset, len); 575483SN/A memcpy(data, pkt->data, size); 582186SN/A offset = 0; 592186SN/A len -= size; 602186SN/A data += size; 615483SN/A ++i; 622186SN/A } 632186SN/A 642186SN/A return true; 652186SN/A} 662186SN/A 672186SN/A 681154SN/Avoid 6910905SN/APacketFifoEntry::serialize(const string &base, CheckpointOut &cp) const 705483SN/A{ 7110905SN/A packet->serialize(base + ".packet", cp); 7210905SN/A paramOut(cp, base + ".slack", slack); 7310905SN/A paramOut(cp, base + ".number", number); 7410905SN/A paramOut(cp, base + ".priv", priv); 755483SN/A} 765483SN/A 775483SN/Avoid 7810905SN/APacketFifoEntry::unserialize(const string &base, CheckpointIn &cp) 795483SN/A{ 8011701Smichael.lebeane@amd.com packet = make_shared<EthPacketData>(); 8110905SN/A packet->unserialize(base + ".packet", cp); 8210905SN/A paramIn(cp, base + ".slack", slack); 8310905SN/A paramIn(cp, base + ".number", number); 8410905SN/A paramIn(cp, base + ".priv", priv); 855483SN/A} 865483SN/A 875483SN/Avoid 8810905SN/APacketFifo::serialize(const string &base, CheckpointOut &cp) const 891154SN/A{ 9010905SN/A paramOut(cp, base + ".size", _size); 9110905SN/A paramOut(cp, base + ".maxsize", _maxsize); 9210905SN/A paramOut(cp, base + ".reserved", _reserved); 9310905SN/A paramOut(cp, base + ".packets", fifo.size()); 941154SN/A 951154SN/A int i = 0; 9610905SN/A for (const auto &entry : fifo) 9710905SN/A entry.serialize(csprintf("%s.entry%d", base, i++), cp); 981154SN/A} 991154SN/A 1001154SN/Avoid 10110905SN/APacketFifo::unserialize(const string &base, CheckpointIn &cp) 1021154SN/A{ 10310905SN/A paramIn(cp, base + ".size", _size); 10410905SN/A// paramIn(cp, base + ".maxsize", _maxsize); 10510905SN/A paramIn(cp, base + ".reserved", _reserved); 1061154SN/A int fifosize; 10710905SN/A paramIn(cp, base + ".packets", fifosize); 1081154SN/A 1091154SN/A fifo.clear(); 1101154SN/A 1111154SN/A for (int i = 0; i < fifosize; ++i) { 1125483SN/A PacketFifoEntry entry; 11310905SN/A entry.unserialize(csprintf("%s.entry%d", base, i), cp); 1145483SN/A fifo.push_back(entry); 1151154SN/A } 1161154SN/A} 117