/*
 * 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 (c) 2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <stdio.h>
#include <sys/types.h>

#include <at.h>
#include <snoop.h>

static char *atp_ci(uint8_t);

static char *atp_trel[8] = {
        "30s",
        "1m",
        "2m",
        "4m",
        "8m",
        "(undef 5)",
        "(undef 6)",
        "(undef 7)"
};

void
interpret_atp(int flags, struct ddp_hdr *ddp, int len)
{
        struct atp_hdr *atp = (struct atp_hdr *)ddp;
        int atplen = len - (DDPHDR_SIZE + ATPHDR_SIZE);

        if (flags & F_SUM) {
                if (atplen < 0) {
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ATP (short packet)");
                        return;
                }
                (void) snprintf(get_sum_line(), MAXLINE,
                    "ATP (%s), TID=%d, L=%d",
                    atp_ci(atp->atp_ctrl),
                    get_short((uint8_t *)&atp->atp_tid),
                    len);
        }

        if (flags & F_DTAIL) {
                show_header("ATP:  ", "ATP Header", 8);
                show_space();

                if (atplen < 0) {
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "ATP (short packet)");
                        return;
                }
                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "Length = %d", len);
                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "Ctrl = 0x%x (%s), bitmap/seq = 0x%x",
                    atp->atp_ctrl,
                    atp_ci(atp->atp_ctrl),
                    atp->atp_seq);
                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "TID = %d, user bytes 0x%x 0x%x 0x%x 0x%x",
                    get_short((uint8_t *)&atp->atp_tid),
                    atp->atp_user[0], atp->atp_user[1],
                    atp->atp_user[2], atp->atp_user[3]);
                show_space();
        }

        if (ddp->ddp_dest_sock == DDP_TYPE_ZIP ||
            ddp->ddp_src_sock == DDP_TYPE_ZIP)
                interpret_atp_zip(flags, atp, atplen);
}

static char *
atp_ci(uint8_t ci)
{
        static char buf[50];
        char *p = buf;
        char *to = NULL;
        char *tail = &buf[sizeof (buf)];

        switch (atp_fun(ci)) {
        case ATP_TREQ:
                p += snprintf(p, tail-p, "TReq");
                to = atp_trel[atp_tmo(ci)];
                break;
        case ATP_TRESP:
                p += snprintf(p, tail-p, "TResp");
                break;
        case ATP_TREL:
                p += snprintf(p, tail-p, "TRel");
                break;
        }

        p += snprintf(p, tail-p, ci & ATP_FLG_XO ? " XO" : " ALO");

        if (ci & ATP_FLG_EOM)
                p += snprintf(p, tail-p, " EOM");

        if (ci & ATP_FLG_STS)
                p += snprintf(p, tail-p, " STS");

        if (to != NULL)
                (void) snprintf(p, tail-p, " %s", to);
        return (buf);
}