LXR qemu/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
   9typedef 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
 102struct 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
 108struct 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
 126typedef struct ArpTable {
 127    struct slirp_arphdr table[ARP_TABLE_SIZE];
 128    int next_victim;
 129} ArpTable;
 130
 131void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 132
 133bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 134                      uint8_t out_ethaddr[ETH_ALEN]);
 135
 136struct 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
 143typedef struct NdpTable {
 144    struct ndpentry table[NDP_TABLE_SIZE];
 145    int next_victim;
 146} NdpTable;
 147
 148void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 149                   uint8_t ethaddr[ETH_ALEN]);
 150bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 151                      uint8_t out_ethaddr[ETH_ALEN]);
 152
 153struct 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    struct mbuf *next_m;    /* pointer to next mbuf to output */
 187    bool if_start_busy;     /* avoid if_start recursion */
 188
 189    /* ip states */
 190    struct ipq ipq;         /* ip reass. queue */
 191    uint16_t ip_id;         /* ip packet ctr, for ids */
 192
 193    /* bootp/dhcp states */
 194    BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 195    char *bootp_filename;
 196    size_t vdnssearch_len;
 197    uint8_t *vdnssearch;
 198
 199    /* tcp states */
 200    struct socket tcb;
 201    struct socket *tcp_last_so;
 202    tcp_seq tcp_iss;        /* tcp initial send seq # */
 203    uint32_t tcp_now;       /* for RFC 1323 timestamps */
 204
 205    /* udp states */
 206    struct socket udb;
 207    struct socket *udp_last_so;
 208
 209    /* icmp states */
 210    struct socket icmp;
 211    struct socket *icmp_last_so;
 212
 213    /* tftp states */
 214    char *tftp_prefix;
 215    struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 216
 217    ArpTable arp_table;
 218    NdpTable ndp_table;
 219
 220    GRand *grand;
 221    QEMUTimer *ra_timer;
 222
 223    void *opaque;
 224};
 225
 226extern Slirp *slirp_instance;
 227
 228#ifndef NULL
 229#define NULL (void *)0
 230#endif
 231
 232void if_start(Slirp *);
 233
 234#ifndef _WIN32
 235#include <netdb.h>
 236#endif
 237
 238#define SO_OPTIONS DO_KEEPALIVE
 239#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 240
 241/* dnssearch.c */
 242int translate_dnssearch(Slirp *s, const char ** names);
 243
 244/* cksum.c */
 245int cksum(struct mbuf *m, int len);
 246int ip6_cksum(struct mbuf *m);
 247
 248/* if.c */
 249void if_init(Slirp *);
 250void if_output(struct socket *, struct mbuf *);
 251
 252/* ip_input.c */
 253void ip_init(Slirp *);
 254void ip_cleanup(Slirp *);
 255void ip_input(struct mbuf *);
 256void ip_slowtimo(Slirp *);
 257void ip_stripoptions(register struct mbuf *, struct mbuf *);
 258
 259/* ip_output.c */
 260int ip_output(struct socket *, struct mbuf *);
 261
 262/* ip6_input.c */
 263void ip6_init(Slirp *);
 264void ip6_cleanup(Slirp *);
 265void ip6_input(struct mbuf *);
 266
 267/* ip6_output */
 268int ip6_output(struct socket *, struct mbuf *, int fast);
 269
 270/* tcp_input.c */
 271void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 272int tcp_mss(register struct tcpcb *, u_int);
 273
 274/* tcp_output.c */
 275int tcp_output(register struct tcpcb *);
 276void tcp_setpersist(register struct tcpcb *);
 277
 278/* tcp_subr.c */
 279void tcp_init(Slirp *);
 280void tcp_cleanup(Slirp *);
 281void tcp_template(struct tcpcb *);
 282void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 283        register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 284struct tcpcb * tcp_newtcpcb(struct socket *);
 285struct tcpcb * tcp_close(register struct tcpcb *);
 286void tcp_sockclosed(struct tcpcb *);
 287int tcp_fconnect(struct socket *, unsigned short af);
 288void tcp_connect(struct socket *);
 289int tcp_attach(struct socket *);
 290uint8_t tcp_tos(struct socket *);
 291int tcp_emu(struct socket *, struct mbuf *);
 292int tcp_ctl(struct socket *);
 293struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 294
 295#ifndef _WIN32
 296#define min(x,y) ((x) < (y) ? (x) : (y))
 297#define max(x,y) ((x) > (y) ? (x) : (y))
 298#endif
 299
 300#endif
 301