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+/*
+ * 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.
+ */
+
+#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 *)&eth_src; }
+ const EthAddr &dst() const { return *(EthAddr *)&eth_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__
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