1f9c3bcb46
This patch aims to simplify the use of the Range class before introducing a more elaborate AddrRegion to replace the AddrRange. The SackRange is the only use of the range class besides address ranges, and the removal of this use makes for an easier modification of the range class. The functionlity that is removed with this patch is not used anywhere throughout the code base.
278 lines
6.3 KiB
C++
278 lines
6.3 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* Copyright (c) 2010 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* Gabe Black
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*/
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#include <cstddef>
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#include <cstdio>
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#include <sstream>
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#include <string>
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#include "base/cprintf.hh"
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#include "base/inet.hh"
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#include "base/types.hh"
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using namespace std;
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namespace Net {
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EthAddr::EthAddr()
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{
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memset(data, 0, ETH_ADDR_LEN);
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}
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EthAddr::EthAddr(const uint8_t ea[ETH_ADDR_LEN])
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{
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*data = *ea;
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}
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EthAddr::EthAddr(const eth_addr &ea)
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{
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*data = *ea.data;
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}
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EthAddr::EthAddr(const std::string &addr)
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{
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parse(addr);
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}
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const EthAddr &
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EthAddr::operator=(const eth_addr &ea)
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{
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*data = *ea.data;
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return *this;
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}
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const EthAddr &
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EthAddr::operator=(const std::string &addr)
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{
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parse(addr);
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return *this;
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}
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void
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EthAddr::parse(const std::string &addr)
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{
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// the hack below is to make sure that ETH_ADDR_LEN is 6 otherwise
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// the sscanf function won't work.
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int bytes[ETH_ADDR_LEN == 6 ? ETH_ADDR_LEN : -1];
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if (sscanf(addr.c_str(), "%x:%x:%x:%x:%x:%x", &bytes[0], &bytes[1],
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&bytes[2], &bytes[3], &bytes[4], &bytes[5]) != ETH_ADDR_LEN) {
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memset(data, 0xff, ETH_ADDR_LEN);
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return;
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}
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for (int i = 0; i < ETH_ADDR_LEN; ++i) {
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if (bytes[i] & ~0xff) {
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memset(data, 0xff, ETH_ADDR_LEN);
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return;
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}
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data[i] = bytes[i];
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}
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}
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string
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EthAddr::string() const
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{
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stringstream stream;
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stream << *this;
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return stream.str();
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}
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bool
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operator==(const EthAddr &left, const EthAddr &right)
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{
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return memcmp(left.bytes(), right.bytes(), ETH_ADDR_LEN);
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}
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ostream &
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operator<<(ostream &stream, const EthAddr &ea)
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{
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const uint8_t *a = ea.addr();
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ccprintf(stream, "%x:%x:%x:%x:%x:%x", a[0], a[1], a[2], a[3], a[4], a[5]);
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return stream;
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}
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string
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IpAddress::string() const
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{
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stringstream stream;
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stream << *this;
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return stream.str();
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}
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bool
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operator==(const IpAddress &left, const IpAddress &right)
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{
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return left.ip() == right.ip();
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}
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ostream &
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operator<<(ostream &stream, const IpAddress &ia)
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{
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uint32_t ip = ia.ip();
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ccprintf(stream, "%x.%x.%x.%x",
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(uint8_t)(ip >> 24), (uint8_t)(ip >> 16),
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(uint8_t)(ip >> 8), (uint8_t)(ip >> 0));
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return stream;
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}
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string
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IpNetmask::string() const
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{
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stringstream stream;
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stream << *this;
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return stream.str();
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}
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bool
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operator==(const IpNetmask &left, const IpNetmask &right)
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{
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return (left.ip() == right.ip()) &&
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(left.netmask() == right.netmask());
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}
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ostream &
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operator<<(ostream &stream, const IpNetmask &in)
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{
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ccprintf(stream, "%s/%d", (const IpAddress &)in, in.netmask());
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return stream;
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}
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string
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IpWithPort::string() const
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{
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stringstream stream;
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stream << *this;
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return stream.str();
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}
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bool
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operator==(const IpWithPort &left, const IpWithPort &right)
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{
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return (left.ip() == right.ip()) && (left.port() == right.port());
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}
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ostream &
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operator<<(ostream &stream, const IpWithPort &iwp)
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{
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ccprintf(stream, "%s:%d", (const IpAddress &)iwp, iwp.port());
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return stream;
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}
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uint16_t
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cksum(const IpPtr &ptr)
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{
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int sum = ip_cksum_add(ptr->bytes(), ptr->hlen(), 0);
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return ip_cksum_carry(sum);
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}
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uint16_t
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__tu_cksum(const IpPtr &ip)
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{
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int tcplen = ip->len() - ip->hlen();
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int sum = ip_cksum_add(ip->payload(), tcplen, 0);
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sum = ip_cksum_add(&ip->ip_src, 8, sum); // source and destination
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sum += htons(ip->ip_p + tcplen);
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return ip_cksum_carry(sum);
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}
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uint16_t
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cksum(const TcpPtr &tcp)
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{ return __tu_cksum(IpPtr(tcp.packet())); }
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uint16_t
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cksum(const UdpPtr &udp)
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{ return __tu_cksum(IpPtr(udp.packet())); }
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bool
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IpHdr::options(vector<const IpOpt *> &vec) const
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{
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vec.clear();
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const uint8_t *data = bytes() + sizeof(struct ip_hdr);
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int all = hlen() - sizeof(struct ip_hdr);
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while (all > 0) {
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const IpOpt *opt = (const IpOpt *)data;
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int len = opt->len();
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if (all < len)
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return false;
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vec.push_back(opt);
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all -= len;
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data += len;
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}
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return true;
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}
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bool
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TcpHdr::options(vector<const TcpOpt *> &vec) const
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{
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vec.clear();
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const uint8_t *data = bytes() + sizeof(struct tcp_hdr);
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int all = off() - sizeof(struct tcp_hdr);
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while (all > 0) {
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const TcpOpt *opt = (const TcpOpt *)data;
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int len = opt->len();
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if (all < len)
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return false;
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vec.push_back(opt);
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all -= len;
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data += len;
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}
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return true;
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}
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int
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hsplit(const EthPacketPtr &ptr)
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{
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int split_point = 0;
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IpPtr ip(ptr);
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if (ip) {
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split_point = ip.pstart();
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TcpPtr tcp(ip);
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if (tcp)
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split_point = tcp.pstart();
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UdpPtr udp(ip);
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if (udp)
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split_point = udp.pstart();
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}
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return split_point;
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}
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} // namespace Net
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