/*      $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;
}

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