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