usr.lib/in.ndpd/trace.c

/*
 * 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 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include "defs.h"
#include "tables.h"

static void print_opt(struct nd_opt_hdr *opt, int len);

void
print_route_sol(char *str, struct phyint *pi,
    struct nd_router_solicit *rs, int len, struct sockaddr_in6 *addr)
{
    struct nd_opt_hdr *opt;
    char abuf[INET6_ADDRSTRLEN];

    logmsg(LOG_DEBUG, "%s %s (%d bytes) on %s\n", str,
        inet_ntop(addr->sin6_family, (void *)&addr->sin6_addr,
        abuf, sizeof (abuf)),
        len, pi->pi_name);

    len -= sizeof (*rs);
    opt = (struct nd_opt_hdr *)&rs[1];
    print_opt(opt, len);
}

void
print_route_adv(char *str, struct phyint *pi,
    struct nd_router_advert *ra, int len, struct sockaddr_in6 *addr)
{
    struct nd_opt_hdr *opt;
    char abuf[INET6_ADDRSTRLEN];

    logmsg(LOG_DEBUG, "%s %s (%d bytes) on %s\n", str,
        inet_ntop(addr->sin6_family, (void *)&addr->sin6_addr,
        abuf, sizeof (abuf)),
        len, pi->pi_name);
    logmsg(LOG_DEBUG, "\tMax hop limit: %u\n", ra->nd_ra_curhoplimit);
    logmsg(LOG_DEBUG, "\tManaged address configuration: %s\n",
        (ra->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) ?
        "Set" : "Not set");
    logmsg(LOG_DEBUG, "\tOther configuration flag: %s\n",
        (ra->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) ?
        "Set" : "Not set");
    logmsg(LOG_DEBUG, "\tRouter lifetime: %u\n",
        ntohs(ra->nd_ra_router_lifetime));
    logmsg(LOG_DEBUG, "\tReachable timer: %u\n",
        ntohl(ra->nd_ra_reachable));
    logmsg(LOG_DEBUG, "\tReachable retrans timer: %u\n",
        ntohl(ra->nd_ra_retransmit));

    len -= sizeof (*ra);
    opt = (struct nd_opt_hdr *)&ra[1];
    print_opt(opt, len);
}

static void
print_opt(struct nd_opt_hdr *opt, int len)
{
    struct nd_opt_prefix_info *po;
    struct nd_opt_mtu *mo;
    struct nd_opt_lla *lo;
    int optlen;
    char abuf[INET6_ADDRSTRLEN];
    char llabuf[BUFSIZ];

    while (len >= sizeof (struct nd_opt_hdr)) {
        optlen = opt->nd_opt_len * 8;
        if (optlen == 0) {
            logmsg(LOG_DEBUG, "Zero length option!\n");
            break;
        }
        switch (opt->nd_opt_type) {
        case ND_OPT_PREFIX_INFORMATION:
            po = (struct nd_opt_prefix_info *)opt;
            if (optlen != sizeof (*po) ||
                optlen > len)
                break;

            logmsg(LOG_DEBUG, "\tPrefix: %s/%u\n",
                inet_ntop(AF_INET6, (void *)&po->nd_opt_pi_prefix,
                abuf, sizeof (abuf)),
                po->nd_opt_pi_prefix_len);
            logmsg(LOG_DEBUG, "\t\tOn link flag:%s\n",
                (po->nd_opt_pi_flags_reserved &
                ND_OPT_PI_FLAG_ONLINK) ?
                "Set" : "Not set");
            logmsg(LOG_DEBUG, "\t\tAuto addrconf flag:%s\n",
                (po->nd_opt_pi_flags_reserved &
                ND_OPT_PI_FLAG_AUTO) ?
                "Set" : "Not set");
            logmsg(LOG_DEBUG, "\t\tValid time: %u\n",
                ntohl(po->nd_opt_pi_valid_time));
            logmsg(LOG_DEBUG, "\t\tPreferred time: %u\n",
                ntohl(po->nd_opt_pi_preferred_time));
            break;
        case ND_OPT_MTU:
            mo = (struct nd_opt_mtu *)opt;
            if (optlen != sizeof (*mo) ||
                optlen > len)
                break;
            logmsg(LOG_DEBUG, "\tMTU: %d\n",
                ntohl(mo->nd_opt_mtu_mtu));
            break;
        case ND_OPT_SOURCE_LINKADDR:
            lo = (struct nd_opt_lla *)opt;
            if (optlen < 8 ||
                optlen > len)
                break;
            (void) fmt_lla(llabuf, sizeof (llabuf),
                lo->nd_opt_lla_hdw_addr,
                optlen - sizeof (nd_opt_hdr_t));
            logmsg(LOG_DEBUG, "\tSource LLA: len %d <%s>\n",
                optlen - sizeof (nd_opt_hdr_t),
                llabuf);
            break;
        case ND_OPT_TARGET_LINKADDR:
            lo = (struct nd_opt_lla *)opt;
            if (optlen < 8||
                optlen > len)
                break;
            (void) fmt_lla(llabuf, sizeof (llabuf),
                lo->nd_opt_lla_hdw_addr,
                optlen - sizeof (nd_opt_hdr_t));
            logmsg(LOG_DEBUG, "\tTarget LLA: len %d <%s>\n",
                optlen - sizeof (nd_opt_hdr_t),
                llabuf);
            break;
        case ND_OPT_REDIRECTED_HEADER:
            logmsg(LOG_DEBUG, "\tRedirected header option!\n");
            break;
        default:
            logmsg(LOG_DEBUG, "Unknown option %d (0x%x)\n",
                opt->nd_opt_type, opt->nd_opt_type);
            break;
        }
        opt = (struct nd_opt_hdr *)((char *)opt + optlen);
        len -= optlen;
    }
}

char *
fmt_lla(char *llabuf, int bufsize, uchar_t *lla, int llalen)
{
    int i;
    char *cp = llabuf;

    for (i = 0; i < llalen; i++) {
        if (i == llalen - 1) /* Last byte? */
            (void) snprintf(cp, bufsize, "%02x", lla[i] & 0xFF);
        else
            (void) snprintf(cp, bufsize, "%02x:", lla[i] & 0xFF);
        bufsize -= strlen(cp);
        cp += strlen(cp);
    }
    return (llabuf);
}