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
  86 #ifdef HAVE_SYS_STROPTS_H
  87 #include <sys/stropts.h>
  88 #endif
  89
  90 #include <glib.h>
  91
  92 #include "debug.h"
  93
  94 #include "qemu/queue.h"
  95 #include "qemu/sockets.h"
  96 #include "net/eth.h"
  97
  98 #include "libslirp.h"
  99 #include "ip.h"
 100 #include "ip6.h"
 101 #include "tcp.h"
 102 #include "tcp_timer.h"
 103 #include "tcp_var.h"
 104 #include "tcpip.h"
 105 #include "udp.h"
 106 #include "ip_icmp.h"
 107 #include "ip6_icmp.h"
 108 #include "mbuf.h"
 109 #include "sbuf.h"
 110 #include "socket.h"
 111 #include "if.h"
 112 #include "main.h"
 113 #include "misc.h"
 114 #ifdef USE_PPP
 115 #include "ppp/pppd.h"
 116 #include "ppp/ppp.h"
 117 #endif
 118
 119 #include "bootp.h"
 120 #include "tftp.h"
 121
 122 #define ARPOP_REQUEST 1         /* ARP request */
 123 #define ARPOP_REPLY   2         /* ARP reply   */
 124
 125 struct ethhdr {
 126     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 127     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 128     unsigned short h_proto;            /* packet type ID field */
 129 };
 130
 131 struct arphdr {
 132     unsigned short ar_hrd;      /* format of hardware address */
 133     unsigned short ar_pro;      /* format of protocol address */
 134     unsigned char  ar_hln;      /* length of hardware address */
 135     unsigned char  ar_pln;      /* length of protocol address */
 136     unsigned short ar_op;       /* ARP opcode (command)       */
 137
 138     /*
 139      *  Ethernet looks like this : This bit is variable sized however...
 140      */
 141     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 142     uint32_t      ar_sip;           /* sender IP address       */
 143     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 144     uint32_t      ar_tip;           /* target IP address       */
 145 } QEMU_PACKED;
 146
 147 #define ARP_TABLE_SIZE 16
 148
 149 typedef struct ArpTable {
 150     struct arphdr table[ARP_TABLE_SIZE];
 151     int next_victim;
 152 } ArpTable;
 153
 154 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 155
 156 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 157                       uint8_t out_ethaddr[ETH_ALEN]);
 158
 159 struct ndpentry {
 160     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 161     struct in6_addr ip_addr;                /* sender IP address       */
 162 } QEMU_PACKED;
 163
 164 #define NDP_TABLE_SIZE 16
 165
 166 typedef struct NdpTable {
 167     struct ndpentry table[NDP_TABLE_SIZE];
 168     int next_victim;
 169 } NdpTable;
 170
 171 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 172                    uint8_t ethaddr[ETH_ALEN]);
 173 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 174                       uint8_t out_ethaddr[ETH_ALEN]);
 175
 176 struct Slirp {
 177     QTAILQ_ENTRY(Slirp) entry;
 178     u_int time_fasttimo;
 179     u_int last_slowtimo;
 180     bool do_slowtimo;
 181
 182     /* virtual network configuration */
 183     struct in_addr vnetwork_addr;
 184     struct in_addr vnetwork_mask;
 185     struct in_addr vhost_addr;
 186     struct in6_addr vprefix_addr6;
 187     uint8_t vprefix_len;
 188     struct in6_addr vhost_addr6;
 189     struct in_addr vdhcp_startaddr;
 190     struct in_addr vnameserver_addr;
 191     struct in6_addr vnameserver_addr6;
 192
 193     struct in_addr client_ipaddr;
 194     char client_hostname[33];
 195
 196     int restricted;
 197     struct ex_list *exec_list;
 198
 199     /* mbuf states */
 200     struct mbuf m_freelist, m_usedlist;
 201     int mbuf_alloced;
 202
 203     /* if states */
 204     struct mbuf if_fastq;   /* fast queue (for interactive data) */
 205     struct mbuf if_batchq;  /* queue for non-interactive data */
 206     struct mbuf *next_m;    /* pointer to next mbuf to output */
 207     bool if_start_busy;     /* avoid if_start recursion */
 208
 209     /* ip states */
 210     struct ipq ipq;         /* ip reass. queue */
 211     uint16_t ip_id;         /* ip packet ctr, for ids */
 212
 213     /* bootp/dhcp states */
 214     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 215     char *bootp_filename;
 216     size_t vdnssearch_len;
 217     uint8_t *vdnssearch;
 218
 219     /* tcp states */
 220     struct socket tcb;
 221     struct socket *tcp_last_so;
 222     tcp_seq tcp_iss;        /* tcp initial send seq # */
 223     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 224
 225     /* udp states */
 226     struct socket udb;
 227     struct socket *udp_last_so;
 228
 229     /* icmp states */
 230     struct socket icmp;
 231     struct socket *icmp_last_so;
 232
 233     /* tftp states */
 234     char *tftp_prefix;
 235     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 236
 237     ArpTable arp_table;
 238     NdpTable ndp_table;
 239
 240     GRand *grand;
 241     QEMUTimer *ra_timer;
 242
 243     void *opaque;
 244 };
 245
 246 extern Slirp *slirp_instance;
 247
 248 #ifndef NULL
 249 #define NULL (void *)0
 250 #endif
 251
 252 #ifndef FULL_BOLT
 253 void if_start(Slirp *);
 254 #else
 255 void if_start(struct ttys *);
 256 #endif
 257
 258 #ifndef HAVE_STRERROR
 259  char *strerror(int error);
 260 #endif
 261
 262 #ifndef HAVE_INDEX
 263  char *index(const char *, int);
 264 #endif
 265
 266 #ifndef HAVE_GETHOSTID
 267  long gethostid(void);
 268 #endif
 269
 270 #ifndef _WIN32
 271 #include <netdb.h>
 272 #endif
 273
 274 #define DEFAULT_BAUD 115200
 275
 276 #define SO_OPTIONS DO_KEEPALIVE
 277 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 278
 279 /* dnssearch.c */
 280 int translate_dnssearch(Slirp *s, const char ** names);
 281
 282 /* cksum.c */
 283 int cksum(struct mbuf *m, int len);
 284 int ip6_cksum(struct mbuf *m);
 285
 286 /* if.c */
 287 void if_init(Slirp *);
 288 void if_output(struct socket *, struct mbuf *);
 289
 290 /* ip_input.c */
 291 void ip_init(Slirp *);
 292 void ip_cleanup(Slirp *);
 293 void ip_input(struct mbuf *);
 294 void ip_slowtimo(Slirp *);
 295 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 296
 297 /* ip_output.c */
 298 int ip_output(struct socket *, struct mbuf *);
 299
 300 /* ip6_input.c */
 301 void ip6_init(Slirp *);
 302 void ip6_cleanup(Slirp *);
 303 void ip6_input(struct mbuf *);
 304
 305 /* ip6_output */
 306 int ip6_output(struct socket *, struct mbuf *, int fast);
 307
 308 /* tcp_input.c */
 309 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 310 int tcp_mss(register struct tcpcb *, u_int);
 311
 312 /* tcp_output.c */
 313 int tcp_output(register struct tcpcb *);
 314 void tcp_setpersist(register struct tcpcb *);
 315
 316 /* tcp_subr.c */
 317 void tcp_init(Slirp *);
 318 void tcp_cleanup(Slirp *);
 319 void tcp_template(struct tcpcb *);
 320 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 321         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 322 struct tcpcb * tcp_newtcpcb(struct socket *);
 323 struct tcpcb * tcp_close(register struct tcpcb *);
 324 void tcp_sockclosed(struct tcpcb *);
 325 int tcp_fconnect(struct socket *, unsigned short af);
 326 void tcp_connect(struct socket *);
 327 int tcp_attach(struct socket *);
 328 uint8_t tcp_tos(struct socket *);
 329 int tcp_emu(struct socket *, struct mbuf *);
 330 int tcp_ctl(struct socket *);
 331 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 332
 333 #ifdef USE_PPP
 334 #define MIN_MRU MINMRU
 335 #define MAX_MRU MAXMRU
 336 #else
 337 #define MIN_MRU 128
 338 #define MAX_MRU 16384
 339 #endif
 340
 341 #ifndef _WIN32
 342 #define min(x,y) ((x) < (y) ? (x) : (y))
 343 #define max(x,y) ((x) > (y) ? (x) : (y))
 344 #endif
 345
 346 #ifdef _WIN32
 347 #undef errno
 348 #define errno (WSAGetLastError())
 349 #endif
 350
 351 #endif