slirp/slirp.h

   1 #ifndef SLIRP_H
   2 #define SLIRP_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
  73 #include "debug.h"
  74
  75 #include "qemu/queue.h"
  76 #include "qemu/sockets.h"
  77 #include "net/eth.h"
  78
  79 #include "libslirp.h"
  80 #include "ip.h"
  81 #include "ip6.h"
  82 #include "tcp.h"
  83 #include "tcp_timer.h"
  84 #include "tcp_var.h"
  85 #include "tcpip.h"
  86 #include "udp.h"
  87 #include "ip_icmp.h"
  88 #include "ip6_icmp.h"
  89 #include "mbuf.h"
  90 #include "sbuf.h"
  91 #include "socket.h"
  92 #include "if.h"
  93 #include "main.h"
  94 #include "misc.h"
  95
  96 #include "bootp.h"
  97 #include "tftp.h"
  98
  99 #define ARPOP_REQUEST 1         /* ARP request */
 100 #define ARPOP_REPLY   2         /* ARP reply   */
 101
 102 struct ethhdr {
 103     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 104     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 105     unsigned short h_proto;            /* packet type ID field */
 106 };
 107
 108 struct slirp_arphdr {
 109     unsigned short ar_hrd;      /* format of hardware address */
 110     unsigned short ar_pro;      /* format of protocol address */
 111     unsigned char  ar_hln;      /* length of hardware address */
 112     unsigned char  ar_pln;      /* length of protocol address */
 113     unsigned short ar_op;       /* ARP opcode (command)       */
 114
 115     /*
 116      *  Ethernet looks like this : This bit is variable sized however...
 117      */
 118     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 119     uint32_t      ar_sip;           /* sender IP address       */
 120     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 121     uint32_t      ar_tip;           /* target IP address       */
 122 } QEMU_PACKED;
 123
 124 #define ARP_TABLE_SIZE 16
 125
 126 typedef struct ArpTable {
 127     struct slirp_arphdr table[ARP_TABLE_SIZE];
 128     int next_victim;
 129 } ArpTable;
 130
 131 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 132
 133 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 134                       uint8_t out_ethaddr[ETH_ALEN]);
 135
 136 struct ndpentry {
 137     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 138     struct in6_addr ip_addr;                /* sender IP address       */
 139 } QEMU_PACKED;
 140
 141 #define NDP_TABLE_SIZE 16
 142
 143 typedef struct NdpTable {
 144     struct ndpentry table[NDP_TABLE_SIZE];
 145     int next_victim;
 146 } NdpTable;
 147
 148 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 149                    uint8_t ethaddr[ETH_ALEN]);
 150 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 151                       uint8_t out_ethaddr[ETH_ALEN]);
 152
 153 struct Slirp {
 154     QTAILQ_ENTRY(Slirp) entry;
 155     u_int time_fasttimo;
 156     u_int last_slowtimo;
 157     bool do_slowtimo;
 158
 159     bool in_enabled, in6_enabled;
 160
 161     /* virtual network configuration */
 162     struct in_addr vnetwork_addr;
 163     struct in_addr vnetwork_mask;
 164     struct in_addr vhost_addr;
 165     struct in6_addr vprefix_addr6;
 166     uint8_t vprefix_len;
 167     struct in6_addr vhost_addr6;
 168     struct in_addr vdhcp_startaddr;
 169     struct in_addr vnameserver_addr;
 170     struct in6_addr vnameserver_addr6;
 171
 172     struct in_addr client_ipaddr;
 173     char client_hostname[33];
 174
 175     int restricted;
 176     struct ex_list *exec_list;
 177
 178     /* mbuf states */
 179     struct quehead m_freelist;
 180     struct quehead m_usedlist;
 181     int mbuf_alloced;
 182
 183     /* if states */
 184     struct quehead if_fastq;   /* fast queue (for interactive data) */
 185     struct quehead if_batchq;  /* queue for non-interactive data */
 186     bool if_start_busy;     /* avoid if_start recursion */
 187
 188     /* ip states */
 189     struct ipq ipq;         /* ip reass. queue */
 190     uint16_t ip_id;         /* ip packet ctr, for ids */
 191
 192     /* bootp/dhcp states */
 193     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 194     char *bootp_filename;
 195     size_t vdnssearch_len;
 196     uint8_t *vdnssearch;
 197
 198     /* tcp states */
 199     struct socket tcb;
 200     struct socket *tcp_last_so;
 201     tcp_seq tcp_iss;        /* tcp initial send seq # */
 202     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 203
 204     /* udp states */
 205     struct socket udb;
 206     struct socket *udp_last_so;
 207
 208     /* icmp states */
 209     struct socket icmp;
 210     struct socket *icmp_last_so;
 211
 212     /* tftp states */
 213     char *tftp_prefix;
 214     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 215
 216     ArpTable arp_table;
 217     NdpTable ndp_table;
 218
 219     GRand *grand;
 220     QEMUTimer *ra_timer;
 221
 222     void *opaque;
 223 };
 224
 225 extern Slirp *slirp_instance;
 226
 227 #ifndef NULL
 228 #define NULL (void *)0
 229 #endif
 230
 231 void if_start(Slirp *);
 232
 233 /* ncsi.c */
 234 void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
 235
 236 #ifndef _WIN32
 237 #include <netdb.h>
 238 #endif
 239
 240 #define SO_OPTIONS DO_KEEPALIVE
 241 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 242
 243 /* dnssearch.c */
 244 int translate_dnssearch(Slirp *s, const char ** names);
 245
 246 /* cksum.c */
 247 int cksum(struct mbuf *m, int len);
 248 int ip6_cksum(struct mbuf *m);
 249
 250 /* if.c */
 251 void if_init(Slirp *);
 252 void if_output(struct socket *, struct mbuf *);
 253
 254 /* ip_input.c */
 255 void ip_init(Slirp *);
 256 void ip_cleanup(Slirp *);
 257 void ip_input(struct mbuf *);
 258 void ip_slowtimo(Slirp *);
 259 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 260
 261 /* ip_output.c */
 262 int ip_output(struct socket *, struct mbuf *);
 263
 264 /* ip6_input.c */
 265 void ip6_init(Slirp *);
 266 void ip6_cleanup(Slirp *);
 267 void ip6_input(struct mbuf *);
 268
 269 /* ip6_output */
 270 int ip6_output(struct socket *, struct mbuf *, int fast);
 271
 272 /* tcp_input.c */
 273 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 274 int tcp_mss(register struct tcpcb *, u_int);
 275
 276 /* tcp_output.c */
 277 int tcp_output(register struct tcpcb *);
 278 void tcp_setpersist(register struct tcpcb *);
 279
 280 /* tcp_subr.c */
 281 void tcp_init(Slirp *);
 282 void tcp_cleanup(Slirp *);
 283 void tcp_template(struct tcpcb *);
 284 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 285         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 286 struct tcpcb * tcp_newtcpcb(struct socket *);
 287 struct tcpcb * tcp_close(register struct tcpcb *);
 288 void tcp_sockclosed(struct tcpcb *);
 289 int tcp_fconnect(struct socket *, unsigned short af);
 290 void tcp_connect(struct socket *);
 291 int tcp_attach(struct socket *);
 292 uint8_t tcp_tos(struct socket *);
 293 int tcp_emu(struct socket *, struct mbuf *);
 294 int tcp_ctl(struct socket *);
 295 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 296
 297 #endif