/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _LIBINETUTIL_IMPL_H
#define _LIBINETUTIL_IMPL_H

/*
 * Contains implementation-specific definitions for libinetutil.
 */

#ifdef  __cplusplus
extern "C" {
#endif

#include <netinet/inetutil.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <sys/poll.h>
#include <signal.h>
#include <limits.h>

/*
 * timer queue implementation-specific artifacts which may change.  A
 * `iu_tq_t' is an incomplete type as far as the consumer of timer queues
 * is concerned.
 */

typedef struct iu_timer_node {

        struct iu_timer_node            *iutn_prev;
        struct iu_timer_node            *iutn_next;
        struct iu_timer_node            *iutn_expire_next;
        hrtime_t                        iutn_abs_timeout;
        iu_timer_id_t                   iutn_timer_id;
        iu_tq_callback_t                *iutn_callback;
        void                            *iutn_arg;
        int                             iutn_pending_delete;

} iu_timer_node_t;

struct iu_timer_queue {
        iu_timer_id_t   iutq_next_timer_id;
        iu_timer_node_t *iutq_head;             /* in order of time-to-fire */
        int             iutq_in_expire; /* nonzero if in the expire function */
        uchar_t         iutq_timer_id_map[(IU_TIMER_ID_MAX + CHAR_BIT) /
                                CHAR_BIT];
};

/*
 * event handler implementation-specific artifacts which may change.  An
 * `iu_eh_t' is an incomplete type as far as the consumer of event handlers is
 * concerned.
 */

typedef struct iu_event_node {

        iu_eh_callback_t        *iuen_callback; /* callback to call */

        void                    *iuen_arg;      /* argument to pass to the */
                                                /* callback */
} iu_event_node_t;

typedef struct iu_eh_sig_info  {

        boolean_t               iues_pending;   /* signal is currently */
                                                /* pending */

        iu_eh_sighandler_t      *iues_handler;  /* handler for a given signal */

        void                    *iues_data;     /* data to pass back to the */
                                                /* handler */
} iu_eh_sig_info_t;

struct iu_event_handler {

        struct pollfd           *iueh_pollfds;  /* array of pollfds */

        iu_event_node_t         *iueh_events;   /* corresponding pollfd info */

        unsigned int            iueh_num_fds;   /* number of pollfds/events */

        boolean_t               iueh_stop;      /* true when done */

        unsigned int            iueh_reason;    /* if stop is true, reason */

        sigset_t                iueh_sig_regset;        /* registered signal */
                                                        /* set */

        iu_eh_sig_info_t        iueh_sig_info[NSIG];    /* signal handler */
                                                        /* information */

        iu_eh_shutdown_t        *iueh_shutdown; /* shutdown callback */

        void                    *iueh_shutdown_arg;     /* data for shutdown */
                                                        /* callback */
};

#ifdef  __cplusplus
}
#endif

#endif  /* !_LIBINETUTIL_IMPL_H */