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 /* MINE */
   9
  10 #ifndef _SLIRP_SOCKET_H_
  11 #define _SLIRP_SOCKET_H_
  12
  13 #define SO_EXPIRE 240000
  14 #define SO_EXPIREFAST 10000
  15
  16 /*
  17  * Our socket structure
  18  */
  19
  20 struct socket {
  21   struct socket *so_next,*so_prev;      /* For a linked list of sockets */
  22
  23   int s;                           /* The actual socket */
  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   u_int16_t so_fport;              /* foreign port */
  35   u_int16_t so_lport;              /* local port */
  36
  37   u_int8_t      so_iptos;       /* Type of service */
  38   u_int8_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_ISFDISCONNECTED   0x020*/ /* Socket has disconnected from peer, in 2MSL state */
  68 #define SS_FWDRAIN              0x040   /* We received a FIN, drain data and set SS_FCANTSENDMORE */
  69
  70 #define SS_CTL                  0x080
  71 #define SS_FACCEPTCONN          0x100   /* Socket is accepting connections from a host on the internet */
  72 #define SS_FACCEPTONCE          0x200   /* If set, the SS_FACCEPTCONN socket will die after one accept */
  73
  74 extern struct socket tcb;
  75
  76 struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));
  77 struct socket * socreate _P((void));
  78 void sofree _P((struct socket *));
  79 int soread _P((struct socket *));
  80 void sorecvoob _P((struct socket *));
  81 int sosendoob _P((struct socket *));
  82 int sowrite _P((struct socket *));
  83 void sorecvfrom _P((struct socket *));
  84 int sosendto _P((struct socket *, struct mbuf *));
  85 struct socket * solisten _P((u_int, u_int32_t, u_int, int));
  86 void soisfconnecting _P((register struct socket *));
  87 void soisfconnected _P((register struct socket *));
  88 void soisfdisconnected _P((struct socket *));
  89 void sofwdrain _P((struct socket *));
  90 size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
  91 int soreadbuf(struct socket *so, const char *buf, int size);
  92
  93 #endif /* _SOCKET_H_ */