usr.sbin/altq/altqstat/qdisc_red.c

   1 /*      $NetBSD: qdisc_red.c,v 1.4 2006/10/12 19:59:13 peter Exp $      */
   2 /*      $KAME: qdisc_red.c,v 1.5 2002/11/08 06:36:18 kjc Exp $  */
   3 /*
   4  * Copyright (C) 1999-2000
   5  *      Sony Computer Science Laboratories, Inc.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/time.h>
  32 #include <sys/socket.h>
  33 #include <net/if.h>
  34 #include <netinet/in.h>
  35 #include <altq/altq.h>
  36 #include <altq/altq_red.h>
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <string.h>
  42 #include <signal.h>
  43 #include <errno.h>
  44 #include <err.h>
  45
  46 #include "altqstat.h"
  47
  48 static int avg_scale = 4096;    /* default fixed-point scale */
  49
  50 void
  51 red_stat_loop(int fd, const char *ifname, int count, int interval)
  52 {
  53         struct red_stats red_stats;
  54         struct timeval cur_time, last_time;
  55         u_int64_t last_bytes;
  56         double sec;
  57         int cnt = count;
  58         sigset_t                omask;
  59
  60         strlcpy(red_stats.iface.red_ifname, ifname,
  61                 sizeof(red_stats.iface.red_ifname));
  62
  63         gettimeofday(&last_time, NULL);
  64         last_time.tv_sec -= interval;
  65         last_bytes = 0;
  66
  67         for (;;) {
  68                 if (ioctl(fd, RED_GETSTATS, &red_stats) < 0)
  69                         err(1, "ioctl RED_GETSTATS");
  70
  71                 gettimeofday(&cur_time, NULL);
  72                 sec = calc_interval(&cur_time, &last_time);
  73
  74                 printf(" weight:%d inv_pmax:%d qthresh:(%d,%d)\n",
  75                        red_stats.weight,  red_stats.inv_pmax,
  76                        red_stats.th_min,  red_stats.th_max);
  77                 printf(" q_len:%d (avg: %.2f), q_limit:%d\n",
  78                        red_stats.q_len,
  79                        ((double)red_stats.q_avg)/(double)avg_scale,
  80                        red_stats.q_limit);
  81                 printf(" xmit:%llu pkts, drop:%llu pkts (forced: %u, early: %u)\n",
  82                        (ull)red_stats.xmit_cnt.packets,
  83                        (ull)red_stats.drop_cnt.packets,
  84                        red_stats.drop_forced, red_stats.drop_unforced);
  85                 if (red_stats.marked_packets != 0)
  86                         printf(" marked: %u\n", red_stats.marked_packets);
  87                 printf(" throughput: %sbps\n",
  88                        rate2str(calc_rate(red_stats.xmit_cnt.bytes,
  89                                           last_bytes, sec)));
  90                 if (red_stats.fv_alloc > 0) {
  91                         printf(" flowvalve: alloc:%u flows:%u\n",
  92                                red_stats.fv_alloc, red_stats.fv_flows);
  93                         printf("  predrop:%u pass:%u escape:%u\n",
  94                                red_stats.fv_predrop, red_stats.fv_pass,
  95                                red_stats.fv_escape);
  96                 }
  97                 printf("\n");
  98
  99                 last_bytes = red_stats.xmit_cnt.bytes;
 100                 last_time = cur_time;
 101
 102                 if (count != 0 && --cnt == 0)
 103                         break;
 104
 105                 /* wait for alarm signal */
 106                 if (sigprocmask(SIG_BLOCK, NULL, &omask) == 0)
 107                         sigsuspend(&omask);
 108         }
 109 }
 110
 111 int
 112 print_redstats(struct redstats *rp)
 113 {
 114         printf("     RED q_avg:%.2f xmit:%llu (forced:%u early:%u marked:%u)\n",
 115                ((double)rp->q_avg)/(double)avg_scale,
 116                (ull)rp->xmit_cnt.packets,
 117                rp->drop_forced,
 118                rp->drop_unforced,
 119                rp->marked_packets);
 120         return 0;
 121 }