LXR qemu/slirp/socket.h

   1/*
   2 * Copyright (c) 1995 Danny Gasparovski.
   3 *
   4 * Please read the file COPYRIGHT for the
   5 * terms and conditions of the copyright.
   6 */
   7
   8#ifndef _SLIRP_SOCKET_H_
   9#define _SLIRP_SOCKET_H_
  10
  11#define SO_EXPIRE 240000
  12#define SO_EXPIREFAST 10000
  13
  14/*
  15 * Our socket structure
  16 */
  17
  18struct socket {
  19  struct socket *so_next,*so_prev;      /* For a linked list of sockets */
  20
  21  int s;                           /* The actual socket */
  22
  23  Slirp *slirp;                    /* managing slirp instance */
  24
  25                        /* XXX union these with not-yet-used sbuf params */
  26  struct mbuf *so_m;               /* Pointer to the original SYN packet,
  27                                    * for non-blocking connect()'s, and
  28                                    * PING reply's */
  29  struct tcpiphdr *so_ti;          /* Pointer to the original ti within
  30                                    * so_mconn, for non-blocking connections */
  31  int so_urgc;
  32  struct in_addr so_faddr;         /* foreign host table entry */
  33  struct in_addr so_laddr;         /* local host table entry */
  34  uint16_t so_fport;               /* foreign port */
  35  uint16_t so_lport;               /* local port */
  36
  37  uint8_t       so_iptos;       /* Type of service */
  38  uint8_t       so_emu;         /* Is the socket emulated? */
  39
  40  u_char        so_type;                /* Type of socket, UDP or TCP */
  41  int   so_state;               /* internal state flags SS_*, below */
  42
  43  struct        tcpcb *so_tcpcb;        /* pointer to TCP protocol control block */
  44  u_int so_expire;              /* When the socket will expire */
  45
  46  int   so_queued;              /* Number of packets queued from this socket */
  47  int   so_nqueued;             /* Number of packets queued in a row
  48                                 * Used to determine when to "downgrade" a session
  49                                         * from fastq to batchq */
  50
  51  struct sbuf so_rcv;           /* Receive buffer */
  52  struct sbuf so_snd;           /* Send buffer */
  53  void * extra;                 /* Extra pointer */
  54};
  55
  56
  57/*
  58 * Socket state bits. (peer means the host on the Internet,
  59 * local host means the host on the other end of the modem)
  60 */
  61#define SS_NOFDREF              0x001   /* No fd reference */
  62
  63#define SS_ISFCONNECTING        0x002   /* Socket is connecting to peer (non-blocking connect()'s) */
  64#define SS_ISFCONNECTED         0x004   /* Socket is connected to peer */
  65#define SS_FCANTRCVMORE         0x008   /* Socket can't receive more from peer (for half-closes) */
  66#define SS_FCANTSENDMORE        0x010   /* Socket can't send more to peer (for half-closes) */
  67#define SS_FWDRAIN              0x040   /* We received a FIN, drain data and set SS_FCANTSENDMORE */
  68
  69#define SS_CTL                  0x080
  70#define SS_FACCEPTCONN          0x100   /* Socket is accepting connections from a host on the internet */
  71#define SS_FACCEPTONCE          0x200   /* If set, the SS_FACCEPTCONN socket will die after one accept */
  72
  73#define SS_PERSISTENT_MASK      0xf000  /* Unremovable state bits */
  74#define SS_HOSTFWD              0x1000  /* Socket describes host->guest forwarding */
  75#define SS_INCOMING             0x2000  /* Connection was initiated by a host on the internet */
  76
  77struct socket * solookup(struct socket *, struct in_addr, u_int, struct in_addr, u_int);
  78struct socket * socreate(Slirp *);
  79void sofree(struct socket *);
  80int soread(struct socket *);
  81void sorecvoob(struct socket *);
  82int sosendoob(struct socket *);
  83int sowrite(struct socket *);
  84void sorecvfrom(struct socket *);
  85int sosendto(struct socket *, struct mbuf *);
  86struct socket * tcp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int,
  87                               int);
  88void soisfconnecting(register struct socket *);
  89void soisfconnected(register struct socket *);
  90void sofwdrain(struct socket *);
  91struct iovec; /* For win32 */
  92size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
  93int soreadbuf(struct socket *so, const char *buf, int size);
  94
  95#endif /* _SOCKET_H_ */
  96