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 "debug.h"
 115
 116 #include "qemu/queue.h"
 117 #include "qemu/sockets.h"
 118 #include "net/eth.h"
 119
 120 #include "libslirp.h"
 121 #include "ip.h"
 122 #include "tcp.h"
 123 #include "tcp_timer.h"
 124 #include "tcp_var.h"
 125 #include "tcpip.h"
 126 #include "udp.h"
 127 #include "ip_icmp.h"
 128 #include "mbuf.h"
 129 #include "sbuf.h"
 130 #include "socket.h"
 131 #include "if.h"
 132 #include "main.h"
 133 #include "misc.h"
 134 #ifdef USE_PPP
 135 #include "ppp/pppd.h"
 136 #include "ppp/ppp.h"
 137 #endif
 138
 139 #include "bootp.h"
 140 #include "tftp.h"
 141
 142 #define ARPOP_REQUEST 1         /* ARP request */
 143 #define ARPOP_REPLY   2         /* ARP reply   */
 144
 145 struct ethhdr {
 146     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 147     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 148     unsigned short h_proto;            /* packet type ID field */
 149 };
 150
 151 struct arphdr {
 152     unsigned short ar_hrd;      /* format of hardware address */
 153     unsigned short ar_pro;      /* format of protocol address */
 154     unsigned char  ar_hln;      /* length of hardware address */
 155     unsigned char  ar_pln;      /* length of protocol address */
 156     unsigned short ar_op;       /* ARP opcode (command)       */
 157
 158     /*
 159      *  Ethernet looks like this : This bit is variable sized however...
 160      */
 161     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 162     uint32_t      ar_sip;           /* sender IP address       */
 163     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 164     uint32_t      ar_tip;           /* target IP address       */
 165 } QEMU_PACKED;
 166
 167 #define ARP_TABLE_SIZE 16
 168
 169 typedef struct ArpTable {
 170     struct arphdr table[ARP_TABLE_SIZE];
 171     int next_victim;
 172 } ArpTable;
 173
 174 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 175
 176 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 177                       uint8_t out_ethaddr[ETH_ALEN]);
 178
 179 struct Slirp {
 180     QTAILQ_ENTRY(Slirp) entry;
 181     u_int time_fasttimo;
 182     u_int last_slowtimo;
 183     bool do_slowtimo;
 184
 185     /* virtual network configuration */
 186     struct in_addr vnetwork_addr;
 187     struct in_addr vnetwork_mask;
 188     struct in_addr vhost_addr;
 189     struct in_addr vdhcp_startaddr;
 190     struct in_addr vnameserver_addr;
 191
 192     struct in_addr client_ipaddr;
 193     char client_hostname[33];
 194
 195     int restricted;
 196     struct ex_list *exec_list;
 197
 198     /* mbuf states */
 199     struct mbuf m_freelist, m_usedlist;
 200     int mbuf_alloced;
 201
 202     /* if states */
 203     struct mbuf if_fastq;   /* fast queue (for interactive data) */
 204     struct mbuf if_batchq;  /* queue for non-interactive data */
 205     struct mbuf *next_m;    /* pointer to next mbuf to output */
 206     bool if_start_busy;     /* avoid if_start recursion */
 207
 208     /* ip states */
 209     struct ipq ipq;         /* ip reass. queue */
 210     uint16_t ip_id;         /* ip packet ctr, for ids */
 211
 212     /* bootp/dhcp states */
 213     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 214     char *bootp_filename;
 215     size_t vdnssearch_len;
 216     uint8_t *vdnssearch;
 217
 218     /* tcp states */
 219     struct socket tcb;
 220     struct socket *tcp_last_so;
 221     tcp_seq tcp_iss;        /* tcp initial send seq # */
 222     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 223
 224     /* udp states */
 225     struct socket udb;
 226     struct socket *udp_last_so;
 227
 228     /* icmp states */
 229     struct socket icmp;
 230     struct socket *icmp_last_so;
 231
 232     /* tftp states */
 233     char *tftp_prefix;
 234     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 235
 236     ArpTable arp_table;
 237
 238     void *opaque;
 239 };
 240
 241 extern Slirp *slirp_instance;
 242
 243 #ifndef NULL
 244 #define NULL (void *)0
 245 #endif
 246
 247 #ifndef FULL_BOLT
 248 void if_start(Slirp *);
 249 #else
 250 void if_start(struct ttys *);
 251 #endif
 252
 253 #ifndef HAVE_STRERROR
 254  char *strerror(int error);
 255 #endif
 256
 257 #ifndef HAVE_INDEX
 258  char *index(const char *, int);
 259 #endif
 260
 261 #ifndef HAVE_GETHOSTID
 262  long gethostid(void);
 263 #endif
 264
 265 #ifndef _WIN32
 266 #include <netdb.h>
 267 #endif
 268
 269 #define DEFAULT_BAUD 115200
 270
 271 #define SO_OPTIONS DO_KEEPALIVE
 272 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 273
 274 /* dnssearch.c */
 275 int translate_dnssearch(Slirp *s, const char ** names);
 276
 277 /* cksum.c */
 278 int cksum(struct mbuf *m, int len);
 279
 280 /* if.c */
 281 void if_init(Slirp *);
 282 void if_output(struct socket *, struct mbuf *);
 283
 284 /* ip_input.c */
 285 void ip_init(Slirp *);
 286 void ip_cleanup(Slirp *);
 287 void ip_input(struct mbuf *);
 288 void ip_slowtimo(Slirp *);
 289 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 290
 291 /* ip_output.c */
 292 int ip_output(struct socket *, struct mbuf *);
 293
 294 /* tcp_input.c */
 295 void tcp_input(register struct mbuf *, int, struct socket *);
 296 int tcp_mss(register struct tcpcb *, u_int);
 297
 298 /* tcp_output.c */
 299 int tcp_output(register struct tcpcb *);
 300 void tcp_setpersist(register struct tcpcb *);
 301
 302 /* tcp_subr.c */
 303 void tcp_init(Slirp *);
 304 void tcp_cleanup(Slirp *);
 305 void tcp_template(struct tcpcb *);
 306 void tcp_respond(struct tcpcb *, register struct tcpiphdr *, register struct mbuf *, tcp_seq, tcp_seq, int);
 307 struct tcpcb * tcp_newtcpcb(struct socket *);
 308 struct tcpcb * tcp_close(register struct tcpcb *);
 309 void tcp_sockclosed(struct tcpcb *);
 310 int tcp_fconnect(struct socket *, unsigned short af);
 311 void tcp_connect(struct socket *);
 312 int tcp_attach(struct socket *);
 313 uint8_t tcp_tos(struct socket *);
 314 int tcp_emu(struct socket *, struct mbuf *);
 315 int tcp_ctl(struct socket *);
 316 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 317
 318 #ifdef USE_PPP
 319 #define MIN_MRU MINMRU
 320 #define MAX_MRU MAXMRU
 321 #else
 322 #define MIN_MRU 128
 323 #define MAX_MRU 16384
 324 #endif
 325
 326 #ifndef _WIN32
 327 #define min(x,y) ((x) < (y) ? (x) : (y))
 328 #define max(x,y) ((x) > (y) ? (x) : (y))
 329 #endif
 330
 331 #ifdef _WIN32
 332 #undef errno
 333 #define errno (WSAGetLastError())
 334 #endif
 335
 336 #endif