slirp/libslirp.h

   1 #ifndef LIBSLIRP_H
   2 #define LIBSLIRP_H
   3
   4 #include <glib.h>
   5 #include <stdint.h>
   6 #include <stdbool.h>
   7
   8 #ifdef _WIN32
   9 #include <winsock2.h>
  10 #include <in6addr.h>
  11 #else
  12 #include <netinet/in.h>
  13 #include <arpa/inet.h>
  14 #endif
  15
  16 typedef struct Slirp Slirp;
  17
  18 typedef ssize_t (*SlirpWriteCb)(const void *buf, size_t len, void *opaque);
  19 typedef void (*SlirpTimerCb)(void *opaque);
  20
  21 /*
  22  * Callbacks from slirp
  23  */
  24 typedef struct SlirpCb {
  25     /*
  26      * Send an ethernet frame to the guest network. The opaque
  27      * parameter is the one given to slirp_init(). The function
  28      * doesn't need to send all the data and may return <len (no
  29      * buffering is done on libslirp side, so the data will be dropped
  30      * in this case). <0 reports an IO error.
  31      */
  32     SlirpWriteCb send_packet;
  33     /* Print a message for an error due to guest misbehavior.  */
  34     void (*guest_error)(const char *msg);
  35     /* Return the virtual clock value in nanoseconds */
  36     int64_t (*clock_get_ns)(void);
  37     /* Create a new timer with the given callback and opaque data */
  38     void *(*timer_new)(SlirpTimerCb cb, void *opaque);
  39     /* Remove and free a timer */
  40     void (*timer_free)(void *timer);
  41     /* Modify a timer to expire at @expire_time */
  42     void (*timer_mod)(void *timer, int64_t expire_time);
  43     /* Register a fd for future polling */
  44     void (*register_poll_fd)(int fd);
  45     /* Unregister a fd */
  46     void (*unregister_poll_fd)(int fd);
  47     /* Kick the io-thread, to signal that new events may be processed */
  48     void (*notify)(void);
  49 } SlirpCb;
  50
  51
  52 Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
  53                   struct in_addr vnetmask, struct in_addr vhost,
  54                   bool in6_enabled,
  55                   struct in6_addr vprefix_addr6, uint8_t vprefix_len,
  56                   struct in6_addr vhost6, const char *vhostname,
  57                   const char *tftp_server_name,
  58                   const char *tftp_path, const char *bootfile,
  59                   struct in_addr vdhcp_start, struct in_addr vnameserver,
  60                   struct in6_addr vnameserver6, const char **vdnssearch,
  61                   const char *vdomainname,
  62                   const SlirpCb *callbacks,
  63                   void *opaque);
  64 void slirp_cleanup(Slirp *slirp);
  65
  66 void slirp_pollfds_fill(GArray *pollfds, uint32_t *timeout);
  67
  68 void slirp_pollfds_poll(GArray *pollfds, int select_error);
  69
  70 void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
  71
  72 int slirp_add_hostfwd(Slirp *slirp, int is_udp,
  73                       struct in_addr host_addr, int host_port,
  74                       struct in_addr guest_addr, int guest_port);
  75 int slirp_remove_hostfwd(Slirp *slirp, int is_udp,
  76                          struct in_addr host_addr, int host_port);
  77 int slirp_add_exec(Slirp *slirp, const char *cmdline,
  78                    struct in_addr *guest_addr, int guest_port);
  79 int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque,
  80                    struct in_addr *guest_addr, int guest_port);
  81
  82 char *slirp_connection_info(Slirp *slirp);
  83
  84 void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr,
  85                        int guest_port, const uint8_t *buf, int size);
  86 size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
  87                              int guest_port);
  88
  89 #endif