/*
 * 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 SLIRPsocket {
        struct SLIRPsocket *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 SLIRPmbuf *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 SLIRPsocket tcb;

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

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

#endif /* _SOCKET_H_ */
