source: vbox/trunk/src/VBox/Devices/Network/slirp/socket.h@ 13611

/*
 * Copyright (c) 1995 Danny Gasparovski.
 *
 * Please read the file COPYRIGHT for the
 * terms and conditions of the copyright.
 */

/* MINE */

#ifndef _SLIRP_SOCKET_H_
#define _SLIRP_SOCKET_H_
#ifdef VBOX_WITH_SYNC_SLIRP
#include <iprt/semaphore.h>
#endif

#define SO_EXPIRE 240000
#define SO_EXPIREFAST 10000

/*
 * Our socket structure
 */

struct socket {
  struct socket *so_next,*so_prev;      /* For a linked list of sockets */

  int s;                           /* The actual socket */

                        /* XXX union these with not-yet-used sbuf params */
  struct mbuf *so_m;               /* Pointer to the original SYN packet,
                                    * for non-blocking connect()'s, and
                                    * PING reply's */
  struct tcpiphdr *so_ti;          /* Pointer to the original ti within
                                    * so_mconn, for non-blocking connections */
  int so_urgc;
  struct in_addr so_faddr;         /* foreign host table entry */
  struct in_addr so_laddr;         /* local host table entry */
  u_int16_t so_fport;              /* foreign port */
  u_int16_t so_lport;              /* local port */

  u_int8_t      so_iptos;       /* Type of service */
  u_int8_t      so_emu;         /* Is the socket emulated? */

  u_char        so_type;                /* Type of socket, UDP or TCP */
  int   so_state;               /* internal state flags SS_*, below */

  struct        tcpcb *so_tcpcb;        /* pointer to TCP protocol control block */
  u_int so_expire;              /* When the socket will expire */

  int   so_queued;              /* Number of packets queued from this socket */
  int   so_nqueued;             /* Number of packets queued in a row
                                 * Used to determine when to "downgrade" a session
                                         * from fastq to batchq */

  struct sbuf so_rcv;           /* Receive buffer */
  struct sbuf so_snd;           /* Send buffer */
  void * extra;                 /* Extra pointer */
  RTSEMMUTEX so_mutex;          /*per socket mutex*/
};


/*
 * Socket state bits. (peer means the host on the Internet,
 * local host means the host on the other end of the modem)
 */
#define SS_NOFDREF              0x001   /* No fd reference */

#define SS_ISFCONNECTING        0x002   /* Socket is connecting to peer (non-blocking connect()'s) */
#define SS_ISFCONNECTED         0x004   /* Socket is connected to peer */
#define SS_FCANTRCVMORE         0x008   /* Socket can't receive more from peer (for half-closes) */
#define SS_FCANTSENDMORE        0x010   /* Socket can't send more to peer (for half-closes) */
/* #define SS_ISFDISCONNECTED   0x020*/ /* Socket has disconnected from peer, in 2MSL state */
#define SS_FWDRAIN              0x040   /* We received a FIN, drain data and set SS_FCANTSENDMORE */

#define SS_CTL                  0x080
#define SS_FACCEPTCONN          0x100   /* Socket is accepting connections from a host on the internet */
#define SS_FACCEPTONCE          0x200   /* If set, the SS_FACCEPTCONN socket will die after one accept */

extern struct socket tcb;


#if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
struct iovec {
        char *iov_base;
        size_t iov_len;
};
#endif

void so_init _P((void));
struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));
struct socket * socreate _P((void));
void sofree _P((PNATState, struct socket *));
int soread _P((PNATState, struct socket *));
void sorecvoob _P((PNATState, struct socket *));
int sosendoob _P((struct socket *));
int sowrite _P((PNATState, struct socket *));
void sorecvfrom _P((PNATState, struct socket *));
int sosendto _P((PNATState, struct socket *, struct mbuf *));
struct socket * solisten _P((PNATState, u_int, u_int32_t, u_int, int));
void sorwakeup _P((struct socket *));
void sowwakeup _P((struct socket *));
void soisfconnecting _P((register struct socket *));
void soisfconnected _P((register struct socket *));
void sofcantrcvmore _P((struct  socket *));
void sofcantsendmore _P((struct socket *));
void soisfdisconnected _P((struct socket *));
void sofwdrain _P((struct socket *));

#endif /* _SOCKET_H_ */