usr.sbin/snoop/snoop_adsp.c

	snoop_adsp.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * 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) 1991-2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

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

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

static char *adsp_ctrl(uint8_t);

void
interpret_adsp(int flags, struct ddp_adsphdr *adp, int len)
{
    struct ddp_adsp_open *apo;

    if (flags & F_SUM) {
        if (len < sizeof (struct ddp_adsphdr)) {
            (void) snprintf(get_sum_line(), MAXLINE,
                "ADSP (short packet)");
            return;
        }
        (void) snprintf(get_sum_line(), MAXLINE,
            "ADSP ConnID=%u (%s)",
            get_short(adp->ad_connid),
            adsp_ctrl(adp->ad_desc));
    }

    if (flags & F_DTAIL) {
        show_header("ADSP: ", "ADSP Header",
            len - sizeof (struct ddp_adsphdr));
        show_space();

        if (len < sizeof (struct ddp_adsphdr)) {
            (void) snprintf(get_line(0, 0), get_line_remain(),
                "(short packet)");
            return;
        }

        (void) snprintf(get_line(0, 0), get_line_remain(),
            "ConnID = %u, ByteSeq = %u, RecvSeq = %u",
            get_short(adp->ad_connid),
            get_long(adp->ad_fbseq),
            get_long(adp->ad_nrseq));

        (void) snprintf(get_line(0, 0), get_line_remain(),
            "RcvWin = %u, Ctrl = 0x%x (%s)",
            get_short(adp->ad_rcvwin),
            adp->ad_desc,
            adsp_ctrl(adp->ad_desc));

        switch (adp->ad_desc) {
        case AD_CREQ:       /* open requests */
        case AD_CACK:
        case AD_CREQ_ACK:
        case AD_CDENY:
            apo = (struct ddp_adsp_open *)adp;
            if (len < sizeof (struct ddp_adsp_open)) {
                (void) snprintf(get_line(0, 0),
                    get_line_remain(),
                    "(short packet)");
                return;
            }
            (void) snprintf(get_line(0, 0), get_line_remain(),
                "Dest ConnID = %u, AttRcvSeq = %u",
                get_short(apo->ad_dconnid),
                get_long(apo->ad_attseq));
            break;
        }

        if (adp->ad_desc & AD_ATT) {
            (void) snprintf(get_line(0, 0), get_line_remain(),
                "AttCode = 0x%x",
                get_short(((struct ddp_adsp_att *)adp)->
                ad_att_code));
        }
    }
}

static char *adsp_ctrl_msg[] = {
    "Probe/Ack",
    "OpenConnReq",
    "OpenConnAck",
    "OpenConnReq+Ack",
    "OpenConnDeny",
    "CloseConnAdv",
    "ForwReset",
    "ForwReset Ack",
    "RetransAdv",
    "9", "10", "11", "12", "13", "14", "15",
};

static char *
adsp_ctrl(uint8_t ctrl)
{
    static char buf[50];
    char *p = buf;
    char *tail = &buf[sizeof (buf)];

    if (ctrl & AD_ACKREQ)
        p += snprintf(p, tail-p, "AckReq");

    if (ctrl & AD_EOM) {
        p += snprintf(p, tail-p, p == buf ? "EOM" : " EOM");
    }

    if (ctrl & AD_ATT) {
        p += snprintf(p, tail-p, p == buf ? "Att" : " Att");
    }

    if (ctrl & AD_CTRL) {
        (void) snprintf(p, tail-p, "%s%s", p == buf ? "" : " ",
            adsp_ctrl_msg[ctrl & AD_CTRL_MASK]);
    }

    return (buf);
}