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