slirp/slirp.h

   1 #ifndef __COMMON_H__
   2 #define __COMMON_H__
   3
   4 #include "qemu/host-utils.h"
   5 #include "slirp_config.h"
   6
   7 #ifdef _WIN32
   8
   9 typedef char *caddr_t;
  10
  11 # include <windows.h>
  12 # include <winsock2.h>
  13 # include <ws2tcpip.h>
  14 # include <sys/timeb.h>
  15 # include <iphlpapi.h>
  16
  17 #else
  18 # if !defined(__HAIKU__)
  19 #  define O_BINARY 0
  20 # endif
  21 #endif
  22
  23 #ifdef HAVE_SYS_BITYPES_H
  24 # include <sys/bitypes.h>
  25 #endif
  26
  27 #ifndef _WIN32
  28 #include <sys/uio.h>
  29 #endif
  30
  31 #ifndef _WIN32
  32 #include <netinet/in.h>
  33 #include <arpa/inet.h>
  34 #endif
  35
  36 #ifndef NO_UNIX_SOCKETS
  37 #include <sys/un.h>
  38 #endif
  39 #ifdef HAVE_SYS_SIGNAL_H
  40 # include <sys/signal.h>
  41 #endif
  42 #ifndef _WIN32
  43 #include <sys/socket.h>
  44 #endif
  45
  46 #if defined(HAVE_SYS_IOCTL_H)
  47 # include <sys/ioctl.h>
  48 #endif
  49
  50 #ifdef HAVE_SYS_SELECT_H
  51 # include <sys/select.h>
  52 #endif
  53
  54 #ifdef HAVE_SYS_WAIT_H
  55 # include <sys/wait.h>
  56 #endif
  57
  58 #ifdef HAVE_SYS_FILIO_H
  59 # include <sys/filio.h>
  60 #endif
  61
  62 /* Avoid conflicting with the libc insque() and remque(), which
  63    have different prototypes. */
  64 #define insque slirp_insque
  65 #define remque slirp_remque
  66 #define quehead slirp_quehead
  67
  68 #ifdef HAVE_SYS_STROPTS_H
  69 #include <sys/stropts.h>
  70 #endif
  71
  72 #include <glib.h>
  73
  74 #include "debug.h"
  75
  76 #include "qemu/queue.h"
  77 #include "qemu/sockets.h"
  78 #include "net/eth.h"
  79
  80 #include "libslirp.h"
  81 #include "ip.h"
  82 #include "ip6.h"
  83 #include "tcp.h"
  84 #include "tcp_timer.h"
  85 #include "tcp_var.h"
  86 #include "tcpip.h"
  87 #include "udp.h"
  88 #include "ip_icmp.h"
  89 #include "ip6_icmp.h"
  90 #include "mbuf.h"
  91 #include "sbuf.h"
  92 #include "socket.h"
  93 #include "if.h"
  94 #include "main.h"
  95 #include "misc.h"
  96
  97 #include "bootp.h"
  98 #include "tftp.h"
  99
 100 #define ARPOP_REQUEST 1         /* ARP request */
 101 #define ARPOP_REPLY   2         /* ARP reply   */
 102
 103 struct ethhdr {
 104     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 105     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 106     unsigned short h_proto;            /* packet type ID field */
 107 };
 108
 109 struct arphdr {
 110     unsigned short ar_hrd;      /* format of hardware address */
 111     unsigned short ar_pro;      /* format of protocol address */
 112     unsigned char  ar_hln;      /* length of hardware address */
 113     unsigned char  ar_pln;      /* length of protocol address */
 114     unsigned short ar_op;       /* ARP opcode (command)       */
 115
 116     /*
 117      *  Ethernet looks like this : This bit is variable sized however...
 118      */
 119     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 120     uint32_t      ar_sip;           /* sender IP address       */
 121     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 122     uint32_t      ar_tip;           /* target IP address       */
 123 } QEMU_PACKED;
 124
 125 #define ARP_TABLE_SIZE 16
 126
 127 typedef struct ArpTable {
 128     struct arphdr table[ARP_TABLE_SIZE];
 129     int next_victim;
 130 } ArpTable;
 131
 132 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 133
 134 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 135                       uint8_t out_ethaddr[ETH_ALEN]);
 136
 137 struct ndpentry {
 138     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 139     struct in6_addr ip_addr;                /* sender IP address       */
 140 } QEMU_PACKED;
 141
 142 #define NDP_TABLE_SIZE 16
 143
 144 typedef struct NdpTable {
 145     struct ndpentry table[NDP_TABLE_SIZE];
 146     int next_victim;
 147 } NdpTable;
 148
 149 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 150                    uint8_t ethaddr[ETH_ALEN]);
 151 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 152                       uint8_t out_ethaddr[ETH_ALEN]);
 153
 154 struct Slirp {
 155     QTAILQ_ENTRY(Slirp) entry;
 156     u_int time_fasttimo;
 157     u_int last_slowtimo;
 158     bool do_slowtimo;
 159
 160     bool in_enabled, in6_enabled;
 161
 162     /* virtual network configuration */
 163     struct in_addr vnetwork_addr;
 164     struct in_addr vnetwork_mask;
 165     struct in_addr vhost_addr;
 166     struct in6_addr vprefix_addr6;
 167     uint8_t vprefix_len;
 168     struct in6_addr vhost_addr6;
 169     struct in_addr vdhcp_startaddr;
 170     struct in_addr vnameserver_addr;
 171     struct in6_addr vnameserver_addr6;
 172
 173     struct in_addr client_ipaddr;
 174     char client_hostname[33];
 175
 176     int restricted;
 177     struct ex_list *exec_list;
 178
 179     /* mbuf states */
 180     struct quehead m_freelist;
 181     struct quehead m_usedlist;
 182     int mbuf_alloced;
 183
 184     /* if states */
 185     struct quehead if_fastq;   /* fast queue (for interactive data) */
 186     struct quehead if_batchq;  /* queue for non-interactive data */
 187     struct mbuf *next_m;    /* pointer to next mbuf to output */
 188     bool if_start_busy;     /* avoid if_start recursion */
 189
 190     /* ip states */
 191     struct ipq ipq;         /* ip reass. queue */
 192     uint16_t ip_id;         /* ip packet ctr, for ids */
 193
 194     /* bootp/dhcp states */
 195     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 196     char *bootp_filename;
 197     size_t vdnssearch_len;
 198     uint8_t *vdnssearch;
 199
 200     /* tcp states */
 201     struct socket tcb;
 202     struct socket *tcp_last_so;
 203     tcp_seq tcp_iss;        /* tcp initial send seq # */
 204     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 205
 206     /* udp states */
 207     struct socket udb;
 208     struct socket *udp_last_so;
 209
 210     /* icmp states */
 211     struct socket icmp;
 212     struct socket *icmp_last_so;
 213
 214     /* tftp states */
 215     char *tftp_prefix;
 216     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 217
 218     ArpTable arp_table;
 219     NdpTable ndp_table;
 220
 221     GRand *grand;
 222     QEMUTimer *ra_timer;
 223
 224     void *opaque;
 225 };
 226
 227 extern Slirp *slirp_instance;
 228
 229 #ifndef NULL
 230 #define NULL (void *)0
 231 #endif
 232
 233 void if_start(Slirp *);
 234
 235 #ifndef _WIN32
 236 #include <netdb.h>
 237 #endif
 238
 239 #define SO_OPTIONS DO_KEEPALIVE
 240 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 241
 242 /* dnssearch.c */
 243 int translate_dnssearch(Slirp *s, const char ** names);
 244
 245 /* cksum.c */
 246 int cksum(struct mbuf *m, int len);
 247 int ip6_cksum(struct mbuf *m);
 248
 249 /* if.c */
 250 void if_init(Slirp *);
 251 void if_output(struct socket *, struct mbuf *);
 252
 253 /* ip_input.c */
 254 void ip_init(Slirp *);
 255 void ip_cleanup(Slirp *);
 256 void ip_input(struct mbuf *);
 257 void ip_slowtimo(Slirp *);
 258 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 259
 260 /* ip_output.c */
 261 int ip_output(struct socket *, struct mbuf *);
 262
 263 /* ip6_input.c */
 264 void ip6_init(Slirp *);
 265 void ip6_cleanup(Slirp *);
 266 void ip6_input(struct mbuf *);
 267
 268 /* ip6_output */
 269 int ip6_output(struct socket *, struct mbuf *, int fast);
 270
 271 /* tcp_input.c */
 272 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 273 int tcp_mss(register struct tcpcb *, u_int);
 274
 275 /* tcp_output.c */
 276 int tcp_output(register struct tcpcb *);
 277 void tcp_setpersist(register struct tcpcb *);
 278
 279 /* tcp_subr.c */
 280 void tcp_init(Slirp *);
 281 void tcp_cleanup(Slirp *);
 282 void tcp_template(struct tcpcb *);
 283 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 284         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 285 struct tcpcb * tcp_newtcpcb(struct socket *);
 286 struct tcpcb * tcp_close(register struct tcpcb *);
 287 void tcp_sockclosed(struct tcpcb *);
 288 int tcp_fconnect(struct socket *, unsigned short af);
 289 void tcp_connect(struct socket *);
 290 int tcp_attach(struct socket *);
 291 uint8_t tcp_tos(struct socket *);
 292 int tcp_emu(struct socket *, struct mbuf *);
 293 int tcp_ctl(struct socket *);
 294 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 295
 296 #ifndef _WIN32
 297 #define min(x,y) ((x) < (y) ? (x) : (y))
 298 #define max(x,y) ((x) > (y) ? (x) : (y))
 299 #endif
 300
 301 #endif