/*
 * 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 */
};


/*
 * 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

#endif /* _SOCKET_H_ */
