/*

 * 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_

#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 */

};

/*

 * 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;

struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));

struct socket * socreate _P((void));

void sofree _P((struct socket *));

int soread _P((struct socket *));

void sorecvoob _P((struct socket *));

int sosendoob _P((struct socket *));

int sowrite _P((struct socket *));

void sorecvfrom _P((struct socket *));

int sosendto _P((struct socket *, struct mbuf *));

struct socket * solisten _P((u_int, u_int32_t, u_int, int));

void soisfconnecting _P((register struct socket *));

void soisfconnected _P((register struct socket *));

void soisfdisconnected _P((struct socket *));

void sofwdrain _P((struct socket *));

#endif /* _SOCKET_H_ */