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 #ifdef HAVE_UNISTD_H
  28 #endif
  29
  30 #ifdef HAVE_STDLIB_H
  31 #endif
  32
  33
  34 #ifndef HAVE_MEMMOVE
  35 #define memmove(x, y, z) bcopy(y, x, z)
  36 #endif
  37
  38 #if TIME_WITH_SYS_TIME
  39 #else
  40 # ifdef HAVE_SYS_TIME_H
  41 # else
  42 # endif
  43 #endif
  44
  45 #ifdef HAVE_STRING_H
  46 #else
  47 #endif
  48
  49 #ifndef _WIN32
  50 #include <sys/uio.h>
  51 #endif
  52
  53 #ifndef _WIN32
  54 #include <netinet/in.h>
  55 #include <arpa/inet.h>
  56 #endif
  57
  58 /* Systems lacking strdup() definition in <string.h>. */
  59 #if defined(ultrix)
  60 char *strdup(const char *);
  61 #endif
  62
  63 /* Systems lacking malloc() definition in <stdlib.h>. */
  64 #if defined(ultrix) || defined(hcx)
  65 void *malloc(size_t arg);
  66 void free(void *ptr);
  67 #endif
  68
  69 #ifndef NO_UNIX_SOCKETS
  70 #include <sys/un.h>
  71 #endif
  72 #ifdef HAVE_SYS_SIGNAL_H
  73 # include <sys/signal.h>
  74 #endif
  75 #ifndef _WIN32
  76 #include <sys/socket.h>
  77 #endif
  78
  79 #if defined(HAVE_SYS_IOCTL_H)
  80 # include <sys/ioctl.h>
  81 #endif
  82
  83 #ifdef HAVE_SYS_SELECT_H
  84 # include <sys/select.h>
  85 #endif
  86
  87 #ifdef HAVE_SYS_WAIT_H
  88 # include <sys/wait.h>
  89 #endif
  90
  91 #ifdef HAVE_SYS_FILIO_H
  92 # include <sys/filio.h>
  93 #endif
  94
  95 #ifdef USE_PPP
  96 #include <ppp/slirppp.h>
  97 #endif
  98
  99 #ifdef __STDC__
 100 #else
 101 #include <varargs.h>
 102 #endif
 103
 104
 105 /* Avoid conflicting with the libc insque() and remque(), which
 106    have different prototypes. */
 107 #define insque slirp_insque
 108 #define remque slirp_remque
 109
 110 #ifdef HAVE_SYS_STROPTS_H
 111 #include <sys/stropts.h>
 112 #endif
 113
 114 #include <glib.h>
 115
 116 #include "debug.h"
 117
 118 #include "qemu/queue.h"
 119 #include "qemu/sockets.h"
 120 #include "net/eth.h"
 121
 122 #include "libslirp.h"
 123 #include "ip.h"
 124 #include "ip6.h"
 125 #include "tcp.h"
 126 #include "tcp_timer.h"
 127 #include "tcp_var.h"
 128 #include "tcpip.h"
 129 #include "udp.h"
 130 #include "ip_icmp.h"
 131 #include "ip6_icmp.h"
 132 #include "mbuf.h"
 133 #include "sbuf.h"
 134 #include "socket.h"
 135 #include "if.h"
 136 #include "main.h"
 137 #include "misc.h"
 138 #ifdef USE_PPP
 139 #include "ppp/pppd.h"
 140 #include "ppp/ppp.h"
 141 #endif
 142
 143 #include "bootp.h"
 144 #include "tftp.h"
 145
 146 #define ARPOP_REQUEST 1         /* ARP request */
 147 #define ARPOP_REPLY   2         /* ARP reply   */
 148
 149 struct ethhdr {
 150     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 151     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 152     unsigned short h_proto;            /* packet type ID field */
 153 };
 154
 155 struct arphdr {
 156     unsigned short ar_hrd;      /* format of hardware address */
 157     unsigned short ar_pro;      /* format of protocol address */
 158     unsigned char  ar_hln;      /* length of hardware address */
 159     unsigned char  ar_pln;      /* length of protocol address */
 160     unsigned short ar_op;       /* ARP opcode (command)       */
 161
 162     /*
 163      *  Ethernet looks like this : This bit is variable sized however...
 164      */
 165     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 166     uint32_t      ar_sip;           /* sender IP address       */
 167     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 168     uint32_t      ar_tip;           /* target IP address       */
 169 } QEMU_PACKED;
 170
 171 #define ARP_TABLE_SIZE 16
 172
 173 typedef struct ArpTable {
 174     struct arphdr table[ARP_TABLE_SIZE];
 175     int next_victim;
 176 } ArpTable;
 177
 178 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 179
 180 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 181                       uint8_t out_ethaddr[ETH_ALEN]);
 182
 183 struct ndpentry {
 184     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 185     struct in6_addr ip_addr;                /* sender IP address       */
 186 } QEMU_PACKED;
 187
 188 #define NDP_TABLE_SIZE 16
 189
 190 typedef struct NdpTable {
 191     struct ndpentry table[NDP_TABLE_SIZE];
 192     int next_victim;
 193 } NdpTable;
 194
 195 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 196                    uint8_t ethaddr[ETH_ALEN]);
 197 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 198                       uint8_t out_ethaddr[ETH_ALEN]);
 199
 200 struct Slirp {
 201     QTAILQ_ENTRY(Slirp) entry;
 202     u_int time_fasttimo;
 203     u_int last_slowtimo;
 204     bool do_slowtimo;
 205
 206     /* virtual network configuration */
 207     struct in_addr vnetwork_addr;
 208     struct in_addr vnetwork_mask;
 209     struct in_addr vhost_addr;
 210     struct in6_addr vprefix_addr6;
 211     uint8_t vprefix_len;
 212     struct in6_addr vhost_addr6;
 213     struct in_addr vdhcp_startaddr;
 214     struct in_addr vnameserver_addr;
 215
 216     struct in_addr client_ipaddr;
 217     char client_hostname[33];
 218
 219     int restricted;
 220     struct ex_list *exec_list;
 221
 222     /* mbuf states */
 223     struct mbuf m_freelist, m_usedlist;
 224     int mbuf_alloced;
 225
 226     /* if states */
 227     struct mbuf if_fastq;   /* fast queue (for interactive data) */
 228     struct mbuf if_batchq;  /* queue for non-interactive data */
 229     struct mbuf *next_m;    /* pointer to next mbuf to output */
 230     bool if_start_busy;     /* avoid if_start recursion */
 231
 232     /* ip states */
 233     struct ipq ipq;         /* ip reass. queue */
 234     uint16_t ip_id;         /* ip packet ctr, for ids */
 235
 236     /* bootp/dhcp states */
 237     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 238     char *bootp_filename;
 239     size_t vdnssearch_len;
 240     uint8_t *vdnssearch;
 241
 242     /* tcp states */
 243     struct socket tcb;
 244     struct socket *tcp_last_so;
 245     tcp_seq tcp_iss;        /* tcp initial send seq # */
 246     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 247
 248     /* udp states */
 249     struct socket udb;
 250     struct socket *udp_last_so;
 251
 252     /* icmp states */
 253     struct socket icmp;
 254     struct socket *icmp_last_so;
 255
 256     /* tftp states */
 257     char *tftp_prefix;
 258     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 259
 260     ArpTable arp_table;
 261     NdpTable ndp_table;
 262
 263     GRand *grand;
 264     QEMUTimer *ra_timer;
 265
 266     void *opaque;
 267 };
 268
 269 extern Slirp *slirp_instance;
 270
 271 #ifndef NULL
 272 #define NULL (void *)0
 273 #endif
 274
 275 #ifndef FULL_BOLT
 276 void if_start(Slirp *);
 277 #else
 278 void if_start(struct ttys *);
 279 #endif
 280
 281 #ifndef HAVE_STRERROR
 282  char *strerror(int error);
 283 #endif
 284
 285 #ifndef HAVE_INDEX
 286  char *index(const char *, int);
 287 #endif
 288
 289 #ifndef HAVE_GETHOSTID
 290  long gethostid(void);
 291 #endif
 292
 293 #ifndef _WIN32
 294 #include <netdb.h>
 295 #endif
 296
 297 #define DEFAULT_BAUD 115200
 298
 299 #define SO_OPTIONS DO_KEEPALIVE
 300 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 301
 302 /* dnssearch.c */
 303 int translate_dnssearch(Slirp *s, const char ** names);
 304
 305 /* cksum.c */
 306 int cksum(struct mbuf *m, int len);
 307 int ip6_cksum(struct mbuf *m);
 308
 309 /* if.c */
 310 void if_init(Slirp *);
 311 void if_output(struct socket *, struct mbuf *);
 312
 313 /* ip_input.c */
 314 void ip_init(Slirp *);
 315 void ip_cleanup(Slirp *);
 316 void ip_input(struct mbuf *);
 317 void ip_slowtimo(Slirp *);
 318 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 319
 320 /* ip_output.c */
 321 int ip_output(struct socket *, struct mbuf *);
 322
 323 /* ip6_input.c */
 324 void ip6_init(Slirp *);
 325 void ip6_cleanup(Slirp *);
 326 void ip6_input(struct mbuf *);
 327
 328 /* ip6_output */
 329 int ip6_output(struct socket *, struct mbuf *, int fast);
 330
 331 /* tcp_input.c */
 332 void tcp_input(register struct mbuf *, int, struct socket *);
 333 int tcp_mss(register struct tcpcb *, u_int);
 334
 335 /* tcp_output.c */
 336 int tcp_output(register struct tcpcb *);
 337 void tcp_setpersist(register struct tcpcb *);
 338
 339 /* tcp_subr.c */
 340 void tcp_init(Slirp *);
 341 void tcp_cleanup(Slirp *);
 342 void tcp_template(struct tcpcb *);
 343 void tcp_respond(struct tcpcb *, register struct tcpiphdr *, register struct mbuf *, tcp_seq, tcp_seq, int);
 344 struct tcpcb * tcp_newtcpcb(struct socket *);
 345 struct tcpcb * tcp_close(register struct tcpcb *);
 346 void tcp_sockclosed(struct tcpcb *);
 347 int tcp_fconnect(struct socket *, unsigned short af);
 348 void tcp_connect(struct socket *);
 349 int tcp_attach(struct socket *);
 350 uint8_t tcp_tos(struct socket *);
 351 int tcp_emu(struct socket *, struct mbuf *);
 352 int tcp_ctl(struct socket *);
 353 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 354
 355 #ifdef USE_PPP
 356 #define MIN_MRU MINMRU
 357 #define MAX_MRU MAXMRU
 358 #else
 359 #define MIN_MRU 128
 360 #define MAX_MRU 16384
 361 #endif
 362
 363 #ifndef _WIN32
 364 #define min(x,y) ((x) < (y) ? (x) : (y))
 365 #define max(x,y) ((x) > (y) ? (x) : (y))
 366 #endif
 367
 368 #ifdef _WIN32
 369 #undef errno
 370 #define errno (WSAGetLastError())
 371 #endif
 372
 373 #endif