/*      $NetBSD: qdisc_rio.c,v 1.6 2006/10/28 11:43:02 peter Exp $      */
/*      $KAME: qdisc_rio.c,v 1.7 2004/01/22 09:31:24 kjc Exp $  */
/*
 * Copyright (C) 1999-2000
 *      Sony Computer Science Laboratories, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <altq/altq.h>
#include <altq/altq_red.h>
#include <altq/altq_rio.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <err.h>

#include "altqstat.h"

static int avg_scale = 4096;    /* default fixed-point scale */

void
rio_stat_loop(int fd, const char *ifname, int count, int interval)
{
        struct rio_stats rio_stats;
        struct timeval cur_time, last_time;
        u_int64_t last_bytes[3];
        double sec;
        int cnt = count;
        sigset_t                omask;
        
        memset(&last_bytes, 0, sizeof last_bytes);      /* XXX gcc */
        bzero(&rio_stats, sizeof(rio_stats));
        strlcpy(rio_stats.iface.rio_ifname, ifname,
                sizeof(rio_stats.iface.rio_ifname));

        gettimeofday(&last_time, NULL);
        last_time.tv_sec -= interval;

        for (;;) {      
                if (ioctl(fd, RIO_GETSTATS, &rio_stats) < 0)
                        err(1, "ioctl RIO_GETSTATS");

                gettimeofday(&cur_time, NULL);
                sec = calc_interval(&cur_time, &last_time);

                printf("weight:%d q_limit:%d\n",
                       rio_stats.weight, rio_stats.q_limit);

                printf("\t\t\tLOW DP\t\tMEDIUM DP\t\tHIGH DP\n");

                printf("thresh (prob):\t\t[%d,%d](1/%d)\t[%d,%d](1/%d)\t\t[%d,%d](1/%d)\n",
                       rio_stats.q_params[0].th_min,
                       rio_stats.q_params[0].th_max,
                       rio_stats.q_params[0].inv_pmax,
                       rio_stats.q_params[1].th_min,
                       rio_stats.q_params[1].th_max,
                       rio_stats.q_params[1].inv_pmax,
                       rio_stats.q_params[2].th_min,
                       rio_stats.q_params[2].th_max,
                       rio_stats.q_params[2].inv_pmax);
                printf("qlen (avg):\t\t%d (%.2f)\t%d (%.2f)\t\t%d (%.2f)\n",
                       rio_stats.q_len[0],
                       ((double)rio_stats.q_stats[0].q_avg)/(double)avg_scale,
                       rio_stats.q_len[1],
                       ((double)rio_stats.q_stats[1].q_avg)/(double)avg_scale,
                       rio_stats.q_len[2],
                       ((double)rio_stats.q_stats[2].q_avg)/(double)avg_scale);
                printf("xmit (drop) pkts:\t%llu (%llu)\t\t%llu (%llu)\t\t\t%llu (%llu)\n",
                       (ull)rio_stats.q_stats[0].xmit_cnt.packets,
                       (ull)rio_stats.q_stats[0].drop_cnt.packets,
                       (ull)rio_stats.q_stats[1].xmit_cnt.packets,
                       (ull)rio_stats.q_stats[1].drop_cnt.packets,
                       (ull)rio_stats.q_stats[2].xmit_cnt.packets,
                       (ull)rio_stats.q_stats[2].drop_cnt.packets);
                printf("(forced:early):\t\t(%u:%u)\t\t(%u:%u)\t\t\t(%u:%u)\n",
                       rio_stats.q_stats[0].drop_forced,
                       rio_stats.q_stats[0].drop_unforced,
                       rio_stats.q_stats[1].drop_forced,
                       rio_stats.q_stats[1].drop_unforced,
                       rio_stats.q_stats[2].drop_forced,
                       rio_stats.q_stats[2].drop_unforced);
                if (rio_stats.q_stats[0].marked_packets != 0
                    || rio_stats.q_stats[1].marked_packets != 0
                    || rio_stats.q_stats[2].marked_packets != 0)
                        printf("marked:\t\t\t%u\t\t%u\t\t\t%u\n",
                               rio_stats.q_stats[0].marked_packets,
                               rio_stats.q_stats[1].marked_packets,
                               rio_stats.q_stats[2].marked_packets);
                printf("throughput:\t\t%sbps\t%sbps\t\t%sbps\n\n",
                       rate2str(calc_rate(rio_stats.q_stats[0].xmit_cnt.bytes,
                                          last_bytes[0], sec)),
                       rate2str(calc_rate(rio_stats.q_stats[1].xmit_cnt.bytes,
                                          last_bytes[1], sec)),
                       rate2str(calc_rate(rio_stats.q_stats[2].xmit_cnt.bytes,
                                          last_bytes[2], sec)));

                last_bytes[0] = rio_stats.q_stats[0].xmit_cnt.bytes;
                last_bytes[1] = rio_stats.q_stats[1].xmit_cnt.bytes;
                last_bytes[2] = rio_stats.q_stats[2].xmit_cnt.bytes;
                last_time = cur_time;

                if (count != 0 && --cnt == 0)
                        break;

                /* wait for alarm signal */
                if (sigprocmask(SIG_BLOCK, NULL, &omask) == 0)
                        sigsuspend(&omask);
        }
}

int
print_riostats(struct redstats *rp)
{
        int dp;

        for (dp = 0; dp < RIO_NDROPPREC; dp++)
                printf("     RIO[%d] q_avg:%.2f xmit:%llu (forced: %u early:%u marked:%u)\n",
                       dp,
                       ((double)rp[dp].q_avg)/(double)avg_scale,
                       (ull)rp[dp].xmit_cnt.packets, 
                       rp[dp].drop_forced,
                       rp[dp].drop_unforced,
                       rp[dp].marked_packets);
        return 0;
}