/*      $NetBSD: qdisc_hfsc.c,v 1.6 2006/10/28 11:43:02 peter Exp $     */
/*      $KAME: qdisc_hfsc.c,v 1.8 2003/07/10 12:09:38 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_hfsc.h>

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

#include "quip_client.h"
#include "altqstat.h"

#define NCLASSES        64

void
hfsc_stat_loop(int fd, const char *ifname, int count, int interval)
{
       struct hfsc_classstats  stats1[NCLASSES], stats2[NCLASSES];
       char                    clnames[NCLASSES][128];
       struct hfsc_class_stats get_stats;
       struct hfsc_classstats  *sp, *lp, *new, *last, *tmp;
       struct timeval          cur_time, last_time;
       int                     i;
       double                  sec;
       int                     cnt = count;
       sigset_t                omask;
       u_int64_t               stattime;
       u_int32_t               machclk_freq;

       strlcpy(get_stats.iface.hfsc_ifname, ifname,
               sizeof(get_stats.iface.hfsc_ifname));
       new = &stats1[0];
       last = &stats2[0];

       /* invalidate class ids */
       for (i = 0; i < NCLASSES; i++) {
               last[i].class_id = 999999; /* XXX */
               last[i].class_handle = HFSC_NULLCLASS_HANDLE;
       }

       for (;;) {
               get_stats.nskip = 0;
               get_stats.nclasses = NCLASSES;
               get_stats.stats = new;

               if (ioctl(fd, HFSC_GETSTATS, &get_stats) < 0)
                       err(1, "ioctl HFSC_GETSTATS");

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

               stattime = get_stats.cur_time;
               machclk_freq = get_stats.machclk_freq;
               printf("\ncur_time:%#llx %u classes %u packets in the tree\n",
                   (ull)stattime,
                   get_stats.hif_classes, get_stats.hif_packets);

               for (i=0; i<get_stats.nclasses; i++) {
                       sp = &new[i];
                       lp = &last[i];

                       if (sp->class_id != lp->class_id) {
                               quip_chandle2name(ifname, sp->class_handle,
                                   clnames[i], sizeof(clnames[0]));
                       }

                       printf("[%2d %s] handle:%#x [rt %s %ums %s][ls %s %ums %s]",
                              sp->class_id, clnames[i], sp->class_handle,
                              rate2str((double)sp->rsc.m1), sp->rsc.d,
                              rate2str((double)sp->rsc.m2),
                              rate2str((double)sp->fsc.m1), sp->fsc.d,
                              rate2str((double)sp->fsc.m2));
                       if (sp->usc.m1 != 0 || sp->usc.m2 != 0)
                               printf("[ul %s %ums %s]\n",
                                      rate2str((double)sp->usc.m1), sp->usc.d,
                                      rate2str((double)sp->usc.m2));
                       else
                                printf("\n");
                       if (lp->class_handle != HFSC_NULLCLASS_HANDLE) {
                               printf("  measured: %sbps [rt:%s ls:%s] qlen:%2d period:%u\n",
                                   rate2str(calc_rate(sp->total, lp->total, sec)),
                                   rate2str(calc_rate(sp->cumul, lp->cumul, sec)),
                                   rate2str(calc_rate(sp->total - sp->cumul,
                                       lp->total - lp->cumul, sec)),
                                   sp->qlength, sp->period);
                       }
                       printf("     packets:%llu (%llu bytes) drops:%llu (%llu bytes) \n",
                              (ull)sp->xmit_cnt.packets,
                              (ull)sp->xmit_cnt.bytes,
                              (ull)sp->drop_cnt.packets,
                              (ull)sp->drop_cnt.bytes);
                       printf("     cumul:%#llx total:%#llx\n",
                              (ull)sp->cumul, (ull)sp->total);
                       printf("     e:%.2fus d:%.2fus f:%.2fus vt:%#llx\n",
                           sp->e == 0 ? 0 : ((double)sp->e - (double)stattime)
                                            / machclk_freq * 1000000,
                           sp->d == 0 ? 0 : ((double)sp->d - (double)stattime)
                                            / machclk_freq * 1000000,
                           sp->f == 0 ? 0 : ((double)sp->f - (double)stattime)
                                            / machclk_freq * 1000000,
                           (ull)sp->vt);
                       printf("     vtperiod:%u parentperiod:%u nactive:%d\n",
                           sp->vtperiod, sp->parentperiod, sp->nactive);
                       printf("     initvt:%#llx cvtmax:%#llx vtoff:%#llx\n",
                           (ull)sp->initvt, (ull)sp->cvtmax, (ull)sp->vtoff);

                       printf("     myf:%#llx cfmin:%#llx cvtmin:%#llx",
                           (ull)sp->myf, (ull)sp->cfmin, (ull)sp->cvtmin);
                       printf(" myfadj:%#llx vtadj:%#llx\n",
                           (ull)sp->myfadj, (ull)sp->vtadj);
                       if (sp->qtype == Q_RED)
                               print_redstats(sp->red);
                       else if (sp->qtype == Q_RIO)
                               print_riostats(sp->red);
               }

               /* swap the buffer pointers */
               tmp = last;
               last = new;
               new = tmp;

               last_time = cur_time;

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

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

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