slirp/slirp.h

   1 #ifndef __COMMON_H__
   2 #define __COMMON_H__
   3
   4 #include "slirp_config.h"
   5
   6 #ifdef _WIN32
   7
   8 typedef char *caddr_t;
   9
  10 # include <windows.h>
  11 # include <winsock2.h>
  12 # include <ws2tcpip.h>
  13 # include <sys/timeb.h>
  14 # include <iphlpapi.h>
  15
  16 #else
  17 # if !defined(__HAIKU__)
  18 #  define O_BINARY 0
  19 # endif
  20 #endif
  21
  22 #ifdef HAVE_SYS_BITYPES_H
  23 # include <sys/bitypes.h>
  24 #endif
  25
  26
  27 #ifndef HAVE_MEMMOVE
  28 #define memmove(x, y, z) bcopy(y, x, z)
  29 #endif
  30
  31 #ifndef _WIN32
  32 #include <sys/uio.h>
  33 #endif
  34
  35 #ifndef _WIN32
  36 #include <netinet/in.h>
  37 #include <arpa/inet.h>
  38 #endif
  39
  40 /* Systems lacking strdup() definition in <string.h>. */
  41 #if defined(ultrix)
  42 char *strdup(const char *);
  43 #endif
  44
  45 /* Systems lacking malloc() definition in <stdlib.h>. */
  46 #if defined(ultrix) || defined(hcx)
  47 void *malloc(size_t arg);
  48 void free(void *ptr);
  49 #endif
  50
  51 #ifndef NO_UNIX_SOCKETS
  52 #include <sys/un.h>
  53 #endif
  54 #ifdef HAVE_SYS_SIGNAL_H
  55 # include <sys/signal.h>
  56 #endif
  57 #ifndef _WIN32
  58 #include <sys/socket.h>
  59 #endif
  60
  61 #if defined(HAVE_SYS_IOCTL_H)
  62 # include <sys/ioctl.h>
  63 #endif
  64
  65 #ifdef HAVE_SYS_SELECT_H
  66 # include <sys/select.h>
  67 #endif
  68
  69 #ifdef HAVE_SYS_WAIT_H
  70 # include <sys/wait.h>
  71 #endif
  72
  73 #ifdef HAVE_SYS_FILIO_H
  74 # include <sys/filio.h>
  75 #endif
  76
  77 #ifdef USE_PPP
  78 #include <ppp/slirppp.h>
  79 #endif
  80
  81 /* Avoid conflicting with the libc insque() and remque(), which
  82    have different prototypes. */
  83 #define insque slirp_insque
  84 #define remque slirp_remque
  85 #define quehead slirp_quehead
  86
  87 #ifdef HAVE_SYS_STROPTS_H
  88 #include <sys/stropts.h>
  89 #endif
  90
  91 #include <glib.h>
  92
  93 #include "debug.h"
  94
  95 #include "qemu/queue.h"
  96 #include "qemu/sockets.h"
  97 #include "net/eth.h"
  98
  99 #include "libslirp.h"
 100 #include "ip.h"
 101 #include "ip6.h"
 102 #include "tcp.h"
 103 #include "tcp_timer.h"
 104 #include "tcp_var.h"
 105 #include "tcpip.h"
 106 #include "udp.h"
 107 #include "ip_icmp.h"
 108 #include "ip6_icmp.h"
 109 #include "mbuf.h"
 110 #include "sbuf.h"
 111 #include "socket.h"
 112 #include "if.h"
 113 #include "main.h"
 114 #include "misc.h"
 115 #ifdef USE_PPP
 116 #include "ppp/pppd.h"
 117 #include "ppp/ppp.h"
 118 #endif
 119
 120 #include "bootp.h"
 121 #include "tftp.h"
 122
 123 #define ARPOP_REQUEST 1         /* ARP request */
 124 #define ARPOP_REPLY   2         /* ARP reply   */
 125
 126 struct ethhdr {
 127     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 128     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 129     unsigned short h_proto;            /* packet type ID field */
 130 };
 131
 132 struct arphdr {
 133     unsigned short ar_hrd;      /* format of hardware address */
 134     unsigned short ar_pro;      /* format of protocol address */
 135     unsigned char  ar_hln;      /* length of hardware address */
 136     unsigned char  ar_pln;      /* length of protocol address */
 137     unsigned short ar_op;       /* ARP opcode (command)       */
 138
 139     /*
 140      *  Ethernet looks like this : This bit is variable sized however...
 141      */
 142     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 143     uint32_t      ar_sip;           /* sender IP address       */
 144     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 145     uint32_t      ar_tip;           /* target IP address       */
 146 } QEMU_PACKED;
 147
 148 #define ARP_TABLE_SIZE 16
 149
 150 typedef struct ArpTable {
 151     struct arphdr table[ARP_TABLE_SIZE];
 152     int next_victim;
 153 } ArpTable;
 154
 155 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 156
 157 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 158                       uint8_t out_ethaddr[ETH_ALEN]);
 159
 160 struct ndpentry {
 161     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 162     struct in6_addr ip_addr;                /* sender IP address       */
 163 } QEMU_PACKED;
 164
 165 #define NDP_TABLE_SIZE 16
 166
 167 typedef struct NdpTable {
 168     struct ndpentry table[NDP_TABLE_SIZE];
 169     int next_victim;
 170 } NdpTable;
 171
 172 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 173                    uint8_t ethaddr[ETH_ALEN]);
 174 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 175                       uint8_t out_ethaddr[ETH_ALEN]);
 176
 177 struct Slirp {
 178     QTAILQ_ENTRY(Slirp) entry;
 179     u_int time_fasttimo;
 180     u_int last_slowtimo;
 181     bool do_slowtimo;
 182
 183     /* virtual network configuration */
 184     struct in_addr vnetwork_addr;
 185     struct in_addr vnetwork_mask;
 186     struct in_addr vhost_addr;
 187     struct in6_addr vprefix_addr6;
 188     uint8_t vprefix_len;
 189     struct in6_addr vhost_addr6;
 190     struct in_addr vdhcp_startaddr;
 191     struct in_addr vnameserver_addr;
 192     struct in6_addr vnameserver_addr6;
 193
 194     struct in_addr client_ipaddr;
 195     char client_hostname[33];
 196
 197     int restricted;
 198     struct ex_list *exec_list;
 199
 200     /* mbuf states */
 201     struct quehead m_freelist;
 202     struct quehead m_usedlist;
 203     int mbuf_alloced;
 204
 205     /* if states */
 206     struct quehead if_fastq;   /* fast queue (for interactive data) */
 207     struct quehead if_batchq;  /* queue for non-interactive data */
 208     struct mbuf *next_m;    /* pointer to next mbuf to output */
 209     bool if_start_busy;     /* avoid if_start recursion */
 210
 211     /* ip states */
 212     struct ipq ipq;         /* ip reass. queue */
 213     uint16_t ip_id;         /* ip packet ctr, for ids */
 214
 215     /* bootp/dhcp states */
 216     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 217     char *bootp_filename;
 218     size_t vdnssearch_len;
 219     uint8_t *vdnssearch;
 220
 221     /* tcp states */
 222     struct socket tcb;
 223     struct socket *tcp_last_so;
 224     tcp_seq tcp_iss;        /* tcp initial send seq # */
 225     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 226
 227     /* udp states */
 228     struct socket udb;
 229     struct socket *udp_last_so;
 230
 231     /* icmp states */
 232     struct socket icmp;
 233     struct socket *icmp_last_so;
 234
 235     /* tftp states */
 236     char *tftp_prefix;
 237     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 238
 239     ArpTable arp_table;
 240     NdpTable ndp_table;
 241
 242     GRand *grand;
 243     QEMUTimer *ra_timer;
 244
 245     void *opaque;
 246 };
 247
 248 extern Slirp *slirp_instance;
 249
 250 #ifndef NULL
 251 #define NULL (void *)0
 252 #endif
 253
 254 #ifndef FULL_BOLT
 255 void if_start(Slirp *);
 256 #else
 257 void if_start(struct ttys *);
 258 #endif
 259
 260 #ifndef HAVE_STRERROR
 261  char *strerror(int error);
 262 #endif
 263
 264 #ifndef HAVE_INDEX
 265  char *index(const char *, int);
 266 #endif
 267
 268 #ifndef HAVE_GETHOSTID
 269  long gethostid(void);
 270 #endif
 271
 272 #ifndef _WIN32
 273 #include <netdb.h>
 274 #endif
 275
 276 #define DEFAULT_BAUD 115200
 277
 278 #define SO_OPTIONS DO_KEEPALIVE
 279 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 280
 281 /* dnssearch.c */
 282 int translate_dnssearch(Slirp *s, const char ** names);
 283
 284 /* cksum.c */
 285 int cksum(struct mbuf *m, int len);
 286 int ip6_cksum(struct mbuf *m);
 287
 288 /* if.c */
 289 void if_init(Slirp *);
 290 void if_output(struct socket *, struct mbuf *);
 291
 292 /* ip_input.c */
 293 void ip_init(Slirp *);
 294 void ip_cleanup(Slirp *);
 295 void ip_input(struct mbuf *);
 296 void ip_slowtimo(Slirp *);
 297 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 298
 299 /* ip_output.c */
 300 int ip_output(struct socket *, struct mbuf *);
 301
 302 /* ip6_input.c */
 303 void ip6_init(Slirp *);
 304 void ip6_cleanup(Slirp *);
 305 void ip6_input(struct mbuf *);
 306
 307 /* ip6_output */
 308 int ip6_output(struct socket *, struct mbuf *, int fast);
 309
 310 /* tcp_input.c */
 311 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 312 int tcp_mss(register struct tcpcb *, u_int);
 313
 314 /* tcp_output.c */
 315 int tcp_output(register struct tcpcb *);
 316 void tcp_setpersist(register struct tcpcb *);
 317
 318 /* tcp_subr.c */
 319 void tcp_init(Slirp *);
 320 void tcp_cleanup(Slirp *);
 321 void tcp_template(struct tcpcb *);
 322 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 323         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 324 struct tcpcb * tcp_newtcpcb(struct socket *);
 325 struct tcpcb * tcp_close(register struct tcpcb *);
 326 void tcp_sockclosed(struct tcpcb *);
 327 int tcp_fconnect(struct socket *, unsigned short af);
 328 void tcp_connect(struct socket *);
 329 int tcp_attach(struct socket *);
 330 uint8_t tcp_tos(struct socket *);
 331 int tcp_emu(struct socket *, struct mbuf *);
 332 int tcp_ctl(struct socket *);
 333 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 334
 335 #ifdef USE_PPP
 336 #define MIN_MRU MINMRU
 337 #define MAX_MRU MAXMRU
 338 #else
 339 #define MIN_MRU 128
 340 #define MAX_MRU 16384
 341 #endif
 342
 343 #ifndef _WIN32
 344 #define min(x,y) ((x) < (y) ? (x) : (y))
 345 #define max(x,y) ((x) > (y) ? (x) : (y))
 346 #endif
 347
 348 #ifdef _WIN32
 349 #undef errno
 350 #define errno (WSAGetLastError())
 351 #endif
 352
 353 #endif