/*      $NetBSD: qdisc_priq.c,v 1.6 2006/10/28 11:43:02 peter Exp $     */
/*      $KAME: qdisc_priq.c,v 1.6 2003/07/10 12:09:38 kjc Exp $ */
/*
* Copyright (C) 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_priq.h>

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

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

void
priq_stat_loop(int fd, const char *ifname, int count, int interval)
{
       struct priq_classstats stats1[PRIQ_MAXPRI], stats2[PRIQ_MAXPRI];
       char clnames[PRIQ_MAXPRI][128];
       struct priq_class_stats get_stats;
       struct priq_classstats  *sp, *lp, *new, *last, *tmp;
       struct timeval          cur_time, last_time;
       int                     i;
       double                  sec;
       int                     cnt = count;
       sigset_t                omask;

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

       /* invalidate class handles */
       for (i=0; i<PRIQ_MAXPRI; i++)
               last[i].class_handle = PRIQ_NULLCLASS_HANDLE;

       for (;;) {
               get_stats.stats = new;
               get_stats.maxpri = PRIQ_MAXPRI;
               if (ioctl(fd, PRIQ_GETSTATS, &get_stats) < 0)
                       err(1, "ioctl PRIQ_GETSTATS");

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

               printf("\n%s:\n", ifname);

               for (i = get_stats.maxpri; i >= 0; i--) {
                       sp = &new[i];
                       lp = &last[i];

                       if (sp->class_handle == PRIQ_NULLCLASS_HANDLE)
                               continue;

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

                       printf("[%s] handle:%#x pri:%d\n",
                              clnames[i], sp->class_handle, i);
                       if (lp->class_handle != PRIQ_NULLCLASS_HANDLE) {
                               printf("  measured: %sbps qlen:%2d period:%u\n",
                                   rate2str(calc_rate(sp->xmitcnt.bytes,
                                       lp->xmitcnt.bytes, sec)),
                                   sp->qlength, sp->period);
                       }
                       printf("     packets:%llu (%llu bytes) drops:%llu\n",
                              (ull)sp->xmitcnt.packets,
                              (ull)sp->xmitcnt.bytes,
                              (ull)sp->dropcnt.packets);
                       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);
       }
}