/*
 * 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 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

/*
 * Free the specified kernel tli data structure.
 *
 * Returns:
 *      0 on success or
 *      positive error code.
 */

#include <sys/param.h>
#include <sys/types.h>
#include <sys/user.h>
#include <sys/stream.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/stropts.h>
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <sys/tiuser.h>
#include <sys/errno.h>
#include <sys/t_kuser.h>
#include <sys/kmem.h>


/*ARGSUSED*/
int
t_kfree(TIUSER *tiptr, char *ptr, int struct_type)
{
        union structptrs {
                struct t_bind           *bind;
                struct t_call           *call;
                struct t_discon         *dis;
                struct t_optmgmt        *opt;
                struct t_kunitdata      *udata;
                struct t_uderr          *uderr;
        } p;
        int error = 0;

        /*
         * Free all the buffers associated with the appropriate
         * fields of each structure.
         */

        switch (struct_type) {
        case T_BIND:
                /* LINTED pointer alignment */
                p.bind = (struct t_bind *)ptr;
                if (p.bind->addr.buf != NULL)
                        kmem_free(p.bind->addr.buf, p.bind->addr.maxlen);
                kmem_free(ptr, sizeof (struct t_bind));
                break;

        case T_CALL:
                /* LINTED pointer alignment */
                p.call = (struct t_call *)ptr;
                if (p.call->addr.buf != NULL)
                        kmem_free(p.call->addr.buf, p.call->addr.maxlen);
                if (p.call->opt.buf != NULL)
                        kmem_free(p.call->opt.buf, p.call->opt.maxlen);
                if (p.call->udata.buf != NULL)
                        kmem_free(p.call->udata.buf, p.call->udata.maxlen);
                kmem_free(ptr, sizeof (struct t_call));
                break;

        case T_OPTMGMT:
                /* LINTED pointer alignment */
                p.opt = (struct t_optmgmt *)ptr;
                if (p.opt->opt.buf != NULL)
                        kmem_free(p.opt->opt.buf, p.opt->opt.maxlen);
                kmem_free(ptr, sizeof (struct t_optmgmt));
                break;

        case T_DIS:
                /* LINTED pointer alignment */
                p.dis = (struct t_discon *)ptr;
                if (p.dis->udata.buf != NULL)
                        kmem_free(p.dis->udata.buf, p.dis->udata.maxlen);
                kmem_free(ptr, sizeof (struct t_discon));
                break;

        case T_UNITDATA:
                /* LINTED pointer alignment */
                p.udata = (struct t_kunitdata *)ptr;

                if (p.udata->udata.udata_mp) {
                        KTLILOG(2, "t_kfree: freeing mblk_t %x, ",
                            p.udata->udata.udata_mp);
                        KTLILOG(2, "ref %d\n",
                            p.udata->udata.udata_mp->b_datap->db_ref);
                        freemsg(p.udata->udata.udata_mp);
                }
                if (p.udata->opt.buf != NULL)
                        kmem_free(p.udata->opt.buf, p.udata->opt.maxlen);
                if (p.udata->addr.buf != NULL) {
                        KTLILOG(2, "t_kfree: freeing address %x, ",
                            p.udata->addr.buf);
                        KTLILOG(2, "len %d\n", p.udata->addr.maxlen);
                        kmem_free(p.udata->addr.buf, p.udata->addr.maxlen);
                }
                KTLILOG(2, "t_kfree: freeing t_kunitdata\n", 0);
                kmem_free(ptr, sizeof (struct t_kunitdata));
                break;

        case T_UDERROR:
                /* LINTED pointer alignment */
                p.uderr = (struct t_uderr *)ptr;
                if (p.uderr->addr.buf != NULL)
                        kmem_free(p.uderr->addr.buf, p.uderr->addr.maxlen);
                if (p.uderr->opt.buf != NULL)
                        kmem_free(p.uderr->opt.buf, p.uderr->opt.maxlen);
                kmem_free(ptr, sizeof (struct t_uderr));
                break;

        case T_INFO:
                break;

        default:
                error = EINVAL;
                break;
        }

        return (error);
}