slirp/slirp.h

   1 #ifndef SLIRP_H
   2 #define SLIRP_H
   3
   4 #ifdef _WIN32
   5
   6 typedef char *caddr_t;
   7
   8 # include <windows.h>
   9 # include <winsock2.h>
  10 # include <ws2tcpip.h>
  11 # include <sys/timeb.h>
  12 # include <iphlpapi.h>
  13
  14 #else
  15 # if !defined(__HAIKU__)
  16 #  define O_BINARY 0
  17 # endif
  18 #endif
  19
  20 #ifndef _WIN32
  21 #include <sys/uio.h>
  22 #endif
  23
  24 #ifndef _WIN32
  25 #include <netinet/in.h>
  26 #include <arpa/inet.h>
  27 #endif
  28
  29 #ifndef _WIN32
  30 #include <sys/socket.h>
  31 #endif
  32
  33 #ifndef _WIN32
  34 # include <sys/ioctl.h>
  35 #endif
  36
  37 #ifdef __APPLE__
  38 # include <sys/filio.h>
  39 #endif
  40
  41 /* Avoid conflicting with the libc insque() and remque(), which
  42    have different prototypes. */
  43 #define insque slirp_insque
  44 #define remque slirp_remque
  45 #define quehead slirp_quehead
  46
  47 #include "debug.h"
  48 #include "util.h"
  49
  50 #include "qemu/queue.h"
  51 #include "qemu/sockets.h"
  52 #include "net/eth.h"
  53
  54 #include "libslirp.h"
  55 #include "ip.h"
  56 #include "ip6.h"
  57 #include "tcp.h"
  58 #include "tcp_timer.h"
  59 #include "tcp_var.h"
  60 #include "tcpip.h"
  61 #include "udp.h"
  62 #include "ip_icmp.h"
  63 #include "ip6_icmp.h"
  64 #include "mbuf.h"
  65 #include "sbuf.h"
  66 #include "socket.h"
  67 #include "if.h"
  68 #include "main.h"
  69 #include "misc.h"
  70
  71 #include "bootp.h"
  72 #include "tftp.h"
  73
  74 #define ARPOP_REQUEST 1         /* ARP request */
  75 #define ARPOP_REPLY   2         /* ARP reply   */
  76
  77 struct ethhdr {
  78     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
  79     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
  80     unsigned short h_proto;            /* packet type ID field */
  81 };
  82
  83 struct slirp_arphdr {
  84     unsigned short ar_hrd;      /* format of hardware address */
  85     unsigned short ar_pro;      /* format of protocol address */
  86     unsigned char  ar_hln;      /* length of hardware address */
  87     unsigned char  ar_pln;      /* length of protocol address */
  88     unsigned short ar_op;       /* ARP opcode (command)       */
  89
  90     /*
  91      *  Ethernet looks like this : This bit is variable sized however...
  92      */
  93     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
  94     uint32_t      ar_sip;           /* sender IP address       */
  95     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
  96     uint32_t      ar_tip;           /* target IP address       */
  97 } SLIRP_PACKED;
  98
  99 #define ARP_TABLE_SIZE 16
 100
 101 typedef struct ArpTable {
 102     struct slirp_arphdr table[ARP_TABLE_SIZE];
 103     int next_victim;
 104 } ArpTable;
 105
 106 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 107
 108 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 109                       uint8_t out_ethaddr[ETH_ALEN]);
 110
 111 struct ndpentry {
 112     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 113     struct in6_addr ip_addr;                /* sender IP address       */
 114 } SLIRP_PACKED;
 115
 116 #define NDP_TABLE_SIZE 16
 117
 118 typedef struct NdpTable {
 119     struct ndpentry table[NDP_TABLE_SIZE];
 120     int next_victim;
 121 } NdpTable;
 122
 123 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 124                    uint8_t ethaddr[ETH_ALEN]);
 125 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 126                       uint8_t out_ethaddr[ETH_ALEN]);
 127
 128 struct Slirp {
 129     QTAILQ_ENTRY(Slirp) entry;
 130     u_int time_fasttimo;
 131     u_int last_slowtimo;
 132     bool do_slowtimo;
 133
 134     bool in_enabled, in6_enabled;
 135
 136     /* virtual network configuration */
 137     struct in_addr vnetwork_addr;
 138     struct in_addr vnetwork_mask;
 139     struct in_addr vhost_addr;
 140     struct in6_addr vprefix_addr6;
 141     uint8_t vprefix_len;
 142     struct in6_addr vhost_addr6;
 143     struct in_addr vdhcp_startaddr;
 144     struct in_addr vnameserver_addr;
 145     struct in6_addr vnameserver_addr6;
 146
 147     struct in_addr client_ipaddr;
 148     char client_hostname[33];
 149
 150     int restricted;
 151     struct gfwd_list *guestfwd_list;
 152
 153     /* mbuf states */
 154     struct quehead m_freelist;
 155     struct quehead m_usedlist;
 156     int mbuf_alloced;
 157
 158     /* if states */
 159     struct quehead if_fastq;   /* fast queue (for interactive data) */
 160     struct quehead if_batchq;  /* queue for non-interactive data */
 161     bool if_start_busy;     /* avoid if_start recursion */
 162
 163     /* ip states */
 164     struct ipq ipq;         /* ip reass. queue */
 165     uint16_t ip_id;         /* ip packet ctr, for ids */
 166
 167     /* bootp/dhcp states */
 168     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 169     char *bootp_filename;
 170     size_t vdnssearch_len;
 171     uint8_t *vdnssearch;
 172     char *vdomainname;
 173
 174     /* tcp states */
 175     struct socket tcb;
 176     struct socket *tcp_last_so;
 177     tcp_seq tcp_iss;        /* tcp initial send seq # */
 178     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 179
 180     /* udp states */
 181     struct socket udb;
 182     struct socket *udp_last_so;
 183
 184     /* icmp states */
 185     struct socket icmp;
 186     struct socket *icmp_last_so;
 187
 188     /* tftp states */
 189     char *tftp_prefix;
 190     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 191     char *tftp_server_name;
 192
 193     ArpTable arp_table;
 194     NdpTable ndp_table;
 195
 196     GRand *grand;
 197     void *ra_timer;
 198
 199     const SlirpCb *cb;
 200     void *opaque;
 201 };
 202
 203 void if_start(Slirp *);
 204
 205 int get_dns_addr(struct in_addr *pdns_addr);
 206 int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id);
 207
 208 /* ncsi.c */
 209 void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
 210
 211 #ifndef _WIN32
 212 #include <netdb.h>
 213 #endif
 214
 215
 216 extern bool slirp_do_keepalive;
 217
 218 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 219
 220 /* dnssearch.c */
 221 int translate_dnssearch(Slirp *s, const char ** names);
 222
 223 /* cksum.c */
 224 int cksum(struct mbuf *m, int len);
 225 int ip6_cksum(struct mbuf *m);
 226
 227 /* if.c */
 228 void if_init(Slirp *);
 229 void if_output(struct socket *, struct mbuf *);
 230
 231 /* ip_input.c */
 232 void ip_init(Slirp *);
 233 void ip_cleanup(Slirp *);
 234 void ip_input(struct mbuf *);
 235 void ip_slowtimo(Slirp *);
 236 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 237
 238 /* ip_output.c */
 239 int ip_output(struct socket *, struct mbuf *);
 240
 241 /* ip6_input.c */
 242 void ip6_init(Slirp *);
 243 void ip6_cleanup(Slirp *);
 244 void ip6_input(struct mbuf *);
 245
 246 /* ip6_output */
 247 int ip6_output(struct socket *, struct mbuf *, int fast);
 248
 249 /* tcp_input.c */
 250 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 251 int tcp_mss(register struct tcpcb *, u_int);
 252
 253 /* tcp_output.c */
 254 int tcp_output(register struct tcpcb *);
 255 void tcp_setpersist(register struct tcpcb *);
 256
 257 /* tcp_subr.c */
 258 void tcp_init(Slirp *);
 259 void tcp_cleanup(Slirp *);
 260 void tcp_template(struct tcpcb *);
 261 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 262         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 263 struct tcpcb * tcp_newtcpcb(struct socket *);
 264 struct tcpcb * tcp_close(register struct tcpcb *);
 265 void tcp_sockclosed(struct tcpcb *);
 266 int tcp_fconnect(struct socket *, unsigned short af);
 267 void tcp_connect(struct socket *);
 268 int tcp_attach(struct socket *);
 269 uint8_t tcp_tos(struct socket *);
 270 int tcp_emu(struct socket *, struct mbuf *);
 271 int tcp_ctl(struct socket *);
 272 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 273
 274 #endif