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/*
* Copyright (c) 2002-2003 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.
*/
#ifndef __BASE_INET_HH__
#define __BASE_INET_HH__
#include <string>
#include "dnet/os.h"
#include "dnet/eth.h"
#include "dnet/ip.h"
#include "dnet/ip6.h"
#include "dnet/addr.h"
#include "dnet/arp.h"
#include "dnet/icmp.h"
#include "dnet/tcp.h"
#include "dnet/udp.h"
#include "dnet/intf.h"
#include "dnet/route.h"
#include "dnet/fw.h"
#include "dnet/blob.h"
#include "dnet/rand.h"
#include "sim/host.hh"
std::string eaddr_string(const uint8_t a[6]);
struct EthHdr;
struct IpHdr;
struct TcpHdr;
struct UdpHdr;
struct EthHdr : protected eth_hdr
{
uint16_t type() const { return ntohs(eth_type); }
const IpHdr *ip() const
{ return type() == ETH_TYPE_IP ? (const IpHdr *)payload() : 0; }
IpHdr *ip()
{ return type() == ETH_TYPE_IP ? (IpHdr *)payload() : 0; }
bool unicast() { return eth_dst.data[0] == 0x00; }
bool multicast() { return eth_dst.data[0] == 0x01; }
bool broadcast() { return eth_dst.data[0] == 0xff; }
int size() const { return sizeof(EthHdr); }
const uint8_t *bytes() const { return (const uint8_t *)this; }
const uint8_t *payload() const { return bytes() + size(); }
uint8_t *bytes() { return (uint8_t *)this; }
uint8_t *payload() { return bytes() + size(); }
};
struct IpHdr : protected ip_hdr
{
uint8_t version() const { return ip_v; }
uint8_t hlen() const { return ip_hl; }
uint8_t tos() const { return ip_tos; }
uint16_t len() const { return ntohs(ip_len); }
uint16_t id() const { return ntohs(ip_id); }
uint16_t frag_flags() const { return ntohs(ip_off) >> 13; }
uint16_t frag_off() const { return ntohs(ip_off) & 0x1fff; }
uint8_t ttl() const { return ip_ttl; }
uint8_t proto() const { return ip_p; }
uint16_t sum() const { return ntohs(ip_sum); }
uint32_t src() const { return ntohl(ip_src); }
uint32_t dst() const { return ntohl(ip_dst); }
void sum(uint16_t sum) { ip_sum = htons(sum); }
uint16_t ip_cksum() const;
uint16_t tu_cksum() const;
const TcpHdr *tcp() const
{ return proto() == IP_PROTO_TCP ? (const TcpHdr *)payload() : 0; }
const UdpHdr *udp() const
{ return proto() == IP_PROTO_UDP ? (const UdpHdr *)payload() : 0; }
TcpHdr *tcp()
{ return proto() == IP_PROTO_TCP ? (TcpHdr *)payload() : 0; }
UdpHdr *udp()
{ return proto() == IP_PROTO_UDP ? (UdpHdr *)payload() : 0; }
int size() const { return hlen(); }
const uint8_t *bytes() const { return (const uint8_t *)this; }
const uint8_t *payload() const { return bytes() + size(); }
uint8_t *bytes() { return (uint8_t *)this; }
uint8_t *payload() { return bytes() + size(); }
};
struct TcpHdr : protected tcp_hdr
{
uint16_t sport() const { return ntohs(th_sport); }
uint16_t dport() const { return ntohs(th_dport); }
uint32_t seq() const { return ntohl(th_seq); }
uint32_t ack() const { return ntohl(th_ack); }
uint8_t off() const { return th_off; }
uint8_t flags() const { return th_flags & 0x3f; }
uint16_t win() const { return ntohs(th_win); }
uint16_t sum() const { return ntohs(th_sum); }
uint16_t urp() const { return ntohs(th_urp); }
void sum(uint16_t sum) { th_sum = htons(sum); }
int size() const { return off(); }
const uint8_t *bytes() const { return (const uint8_t *)this; }
const uint8_t *payload() const { return bytes() + size(); }
uint8_t *bytes() { return (uint8_t *)this; }
uint8_t *payload() { return bytes() + size(); }
};
struct UdpHdr : protected udp_hdr
{
uint16_t sport() const { return ntohs(uh_sport); }
uint16_t dport() const { return ntohs(uh_dport); }
uint16_t len() const { return ntohs(uh_ulen); }
uint16_t sum() const { return ntohs(uh_sum); }
void sum(uint16_t sum) { uh_sum = htons(sum); }
int size() const { return sizeof(UdpHdr); }
const uint8_t *bytes() const { return (const uint8_t *)this; }
const uint8_t *payload() const { return bytes() + size(); }
uint8_t *bytes() { return (uint8_t *)this; }
uint8_t *payload() { return bytes() + size(); }
};
#endif // __BASE_INET_HH__
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