/* * Copyright (c) 2002-2005 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 * Steve Reinhardt */ #ifndef __BASE_INET_HH__ #define __BASE_INET_HH__ #include <iosfwd> #include <string> #include <utility> #include <vector> #include "base/range.hh" #include "dev/etherpkt.hh" #include "sim/host.hh" #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" namespace Net { /* * Ethernet Stuff */ struct EthAddr : protected eth_addr { protected: void parse(const std::string &addr); public: EthAddr(); EthAddr(const uint8_t ea[ETH_ADDR_LEN]); EthAddr(const eth_addr &ea); EthAddr(const std::string &addr); const EthAddr &operator=(const eth_addr &ea); const EthAddr &operator=(const std::string &addr); int size() const { return sizeof(eth_addr); } const uint8_t *bytes() const { return &data[0]; } uint8_t *bytes() { return &data[0]; } const uint8_t *addr() const { return &data[0]; } bool unicast() const { return data[0] == 0x00; } bool multicast() const { return data[0] == 0x01; } bool broadcast() const { return data[0] == 0xff; } std::string string() const; operator uint64_t() const { uint64_t reg = 0; reg |= ((uint64_t)data[0]) << 40; reg |= ((uint64_t)data[1]) << 32; reg |= ((uint64_t)data[2]) << 24; reg |= ((uint64_t)data[3]) << 16; reg |= ((uint64_t)data[4]) << 8; reg |= ((uint64_t)data[5]) << 0; return reg; } }; std::ostream &operator<<(std::ostream &stream, const EthAddr &ea); bool operator==(const EthAddr &left, const EthAddr &right); struct EthHdr : public eth_hdr { uint16_t type() const { return ntohs(eth_type); } const EthAddr &src() const { return *(EthAddr *)ð_src; } const EthAddr &dst() const { return *(EthAddr *)ð_dst; } int size() const { return sizeof(eth_hdr); } 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(); } }; class EthPtr { protected: friend class IpPtr; EthPacketPtr p; public: EthPtr() {} EthPtr(const EthPacketPtr &ptr) : p(ptr) { } EthHdr *operator->() { return (EthHdr *)p->data; } EthHdr &operator*() { return *(EthHdr *)p->data; } operator EthHdr *() { return (EthHdr *)p->data; } const EthHdr *operator->() const { return (const EthHdr *)p->data; } const EthHdr &operator*() const { return *(const EthHdr *)p->data; } operator const EthHdr *() const { return (const EthHdr *)p->data; } const EthPtr &operator=(const EthPacketPtr &ptr) { p = ptr; return *this; } const EthPacketPtr packet() const { return p; } EthPacketPtr packet() { return p; } bool operator!() const { return !p; } operator bool() const { return p; } }; /* * IP Stuff */ struct IpOpt; struct IpHdr : public ip_hdr { uint8_t version() const { return ip_v; } uint8_t hlen() const { return ip_hl * 4; } 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 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 = sum; } bool options(std::vector<const IpOpt *> &vec) const; 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(); } }; class IpPtr { protected: friend class TcpPtr; friend class UdpPtr; EthPacketPtr p; const IpHdr *h() const { return (const IpHdr *)(p->data + sizeof(eth_hdr)); } IpHdr *h() { return (IpHdr *)(p->data + sizeof(eth_hdr)); } void set(const EthPacketPtr &ptr) { EthHdr *eth = (EthHdr *)ptr->data; if (eth->type() == ETH_TYPE_IP) p = ptr; else p = 0; } public: IpPtr() {} IpPtr(const EthPacketPtr &ptr) { set(ptr); } IpPtr(const EthPtr &ptr) { set(ptr.p); } IpPtr(const IpPtr &ptr) : p(ptr.p) { } IpHdr *operator->() { return h(); } IpHdr &operator*() { return *h(); } operator IpHdr *() { return h(); } const IpHdr *operator->() const { return h(); } const IpHdr &operator*() const { return *h(); } operator const IpHdr *() const { return h(); } const IpPtr &operator=(const EthPacketPtr &ptr) { set(ptr); return *this; } const IpPtr &operator=(const EthPtr &ptr) { set(ptr.p); return *this; } const IpPtr &operator=(const IpPtr &ptr) { p = ptr.p; return *this; } const EthPacketPtr packet() const { return p; } EthPacketPtr packet() { return p; } bool operator!() const { return !p; } operator bool() const { return p; } operator bool() { return p; } }; uint16_t cksum(const IpPtr &ptr); struct IpOpt : public ip_opt { uint8_t type() const { return opt_type; } uint8_t typeNumber() const { return IP_OPT_NUMBER(opt_type); } uint8_t typeClass() const { return IP_OPT_CLASS(opt_type); } uint8_t typeCopied() const { return IP_OPT_COPIED(opt_type); } uint8_t len() const { return IP_OPT_TYPEONLY(type()) ? 1 : opt_len; } bool isNumber(int num) const { return typeNumber() == IP_OPT_NUMBER(num); } bool isClass(int cls) const { return typeClass() == IP_OPT_CLASS(cls); } bool isCopied(int cpy) const { return typeCopied() == IP_OPT_COPIED(cpy); } const uint8_t *data() const { return opt_data.data8; } void sec(ip_opt_data_sec &sec) const; void lsrr(ip_opt_data_rr &rr) const; void ssrr(ip_opt_data_rr &rr) const; void ts(ip_opt_data_ts &ts) const; uint16_t satid() const { return ntohs(opt_data.satid); } uint16_t mtup() const { return ntohs(opt_data.mtu); } uint16_t mtur() const { return ntohs(opt_data.mtu); } void tr(ip_opt_data_tr &tr) const; const uint32_t *addext() const { return &opt_data.addext[0]; } uint16_t rtralt() const { return ntohs(opt_data.rtralt); } void sdb(std::vector<uint32_t> &vec) const; }; /* * TCP Stuff */ struct TcpOpt; struct TcpHdr : public 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 th_sum; } uint16_t urp() const { return ntohs(th_urp); } void sum(uint16_t sum) { th_sum = sum; } bool options(std::vector<const TcpOpt *> &vec) const; 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(); } }; class TcpPtr { protected: EthPacketPtr p; int off; const TcpHdr *h() const { return (const TcpHdr *)(p->data + off); } TcpHdr *h() { return (TcpHdr *)(p->data + off); } void set(const EthPacketPtr &ptr, int offset) { p = ptr; off = offset; } void set(const IpPtr &ptr) { if (ptr->proto() == IP_PROTO_TCP) set(ptr.p, sizeof(eth_hdr) + ptr->hlen()); else set(0, 0); } public: TcpPtr() {} TcpPtr(const IpPtr &ptr) { set(ptr); } TcpPtr(const TcpPtr &ptr) : p(ptr.p), off(ptr.off) {} TcpHdr *operator->() { return h(); } TcpHdr &operator*() { return *h(); } operator TcpHdr *() { return h(); } const TcpHdr *operator->() const { return h(); } const TcpHdr &operator*() const { return *h(); } operator const TcpHdr *() const { return h(); } const TcpPtr &operator=(const IpPtr &i) { set(i); return *this; } const TcpPtr &operator=(const TcpPtr &t) { set(t.p, t.off); return *this; } const EthPacketPtr packet() const { return p; } EthPacketPtr packet() { return p; } bool operator!() const { return !p; } operator bool() const { return p; } operator bool() { return p; } }; uint16_t cksum(const TcpPtr &ptr); typedef Range<uint16_t> SackRange; struct TcpOpt : public tcp_opt { uint8_t type() const { return opt_type; } uint8_t len() const { return TCP_OPT_TYPEONLY(type()) ? 1 : opt_len; } bool isopt(int opt) const { return type() == opt; } const uint8_t *data() const { return opt_data.data8; } uint16_t mss() const { return ntohs(opt_data.mss); } uint8_t wscale() const { return opt_data.wscale; } bool sack(std::vector<SackRange> &vec) const; uint32_t echo() const { return ntohl(opt_data.echo); } uint32_t tsval() const { return ntohl(opt_data.timestamp[0]); } uint32_t tsecr() const { return ntohl(opt_data.timestamp[1]); } uint32_t cc() const { return ntohl(opt_data.cc); } uint8_t cksum() const{ return opt_data.cksum; } const uint8_t *md5() const { return opt_data.md5; } int size() const { return len(); } 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(); } }; /* * UDP Stuff */ struct UdpHdr : public 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 uh_sum; } void sum(uint16_t sum) { uh_sum = sum; } int size() const { return sizeof(udp_hdr); } 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(); } }; class UdpPtr { protected: EthPacketPtr p; int off; const UdpHdr *h() const { return (const UdpHdr *)(p->data + off); } UdpHdr *h() { return (UdpHdr *)(p->data + off); } void set(const EthPacketPtr &ptr, int offset) { p = ptr; off = offset; } void set(const IpPtr &ptr) { if (ptr->proto() == IP_PROTO_UDP) set(ptr.p, sizeof(eth_hdr) + ptr->hlen()); else set(0, 0); } public: UdpPtr() {} UdpPtr(const IpPtr &ptr) { set(ptr); } UdpPtr(const UdpPtr &ptr) : p(ptr.p), off(ptr.off) {} UdpHdr *operator->() { return h(); } UdpHdr &operator*() { return *h(); } operator UdpHdr *() { return h(); } const UdpHdr *operator->() const { return h(); } const UdpHdr &operator*() const { return *h(); } operator const UdpHdr *() const { return h(); } const UdpPtr &operator=(const IpPtr &i) { set(i); return *this; } const UdpPtr &operator=(const UdpPtr &t) { set(t.p, t.off); return *this; } const EthPacketPtr packet() const { return p; } EthPacketPtr packet() { return p; } bool operator!() const { return !p; } operator bool() const { return p; } operator bool() { return p; } }; uint16_t cksum(const UdpPtr &ptr); /* namespace Net */ } #endif // __BASE_INET_HH__