usr.sbin/ppp/throughput.c

   1 /*-
   2  * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/usr.sbin/ppp/throughput.c,v 1.13.2.3 2002/09/01 02:12:32 brian Exp $
  27  * $DragonFly: src/usr.sbin/ppp/throughput.c,v 1.2 2003/06/17 04:30:01 dillon Exp $
  28  */
  29
  30 #include <sys/types.h>
  31
  32 #include <stdarg.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <termios.h>
  37 #include <time.h>
  38
  39 #include "log.h"
  40 #include "timer.h"
  41 #include "throughput.h"
  42 #include "descriptor.h"
  43 #include "prompt.h"
  44
  45
  46 void
  47 throughput_init(struct pppThroughput *t, int period)
  48 {
  49   t->OctetsIn = t->OctetsOut = t->PacketsIn = t->PacketsOut = 0;
  50   t->SamplePeriod = period;
  51   t->in.SampleOctets = (long long *)
  52     calloc(period, sizeof *t->in.SampleOctets);
  53   t->in.OctetsPerSecond = 0;
  54   t->out.SampleOctets = (long long *)
  55     calloc(period, sizeof *t->out.SampleOctets);
  56   t->out.OctetsPerSecond = 0;
  57   t->BestOctetsPerSecond = 0;
  58   t->nSample = 0;
  59   time(&t->BestOctetsPerSecondTime);
  60   memset(&t->Timer, '\0', sizeof t->Timer);
  61   t->Timer.name = "throughput";
  62   t->uptime = 0;
  63   t->downtime = 0;
  64   t->rolling = 0;
  65   t->callback.data = NULL;
  66   t->callback.fn = NULL;
  67   throughput_stop(t);
  68 }
  69
  70 void
  71 throughput_destroy(struct pppThroughput *t)
  72 {
  73   if (t && t->in.SampleOctets) {
  74     throughput_stop(t);
  75     free(t->in.SampleOctets);
  76     free(t->out.SampleOctets);
  77     t->in.SampleOctets = NULL;
  78     t->out.SampleOctets = NULL;
  79   }
  80 }
  81
  82 int
  83 throughput_uptime(struct pppThroughput *t)
  84 {
  85   time_t downat;
  86
  87   downat = t->downtime ? t->downtime : time(NULL);
  88   if (t->uptime && downat < t->uptime) {
  89     /* Euch !  The clock's gone back ! */
  90     int i;
  91
  92     for (i = 0; i < t->SamplePeriod; i++)
  93       t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
  94     t->nSample = 0;
  95     t->uptime = downat;
  96   }
  97   return t->uptime ? downat - t->uptime : 0;
  98 }
  99
 100 void
 101 throughput_disp(struct pppThroughput *t, struct prompt *prompt)
 102 {
 103   int secs_up, divisor;
 104
 105   secs_up = throughput_uptime(t);
 106   prompt_Printf(prompt, "Connect time: %d:%02d:%02d", secs_up / 3600,
 107                 (secs_up / 60) % 60, secs_up % 60);
 108   if (t->downtime)
 109     prompt_Printf(prompt, " - down at %s", ctime(&t->downtime));
 110   else
 111     prompt_Printf(prompt, "\n");
 112
 113   divisor = secs_up ? secs_up : 1;
 114   prompt_Printf(prompt, "%llu octets in, %llu octets out\n",
 115                 t->OctetsIn, t->OctetsOut);
 116   prompt_Printf(prompt, "%llu packets in, %llu packets out\n",
 117                 t->PacketsIn, t->PacketsOut);
 118   if (t->rolling) {
 119     prompt_Printf(prompt, "  overall   %6qu bytes/sec\n",
 120                   (t->OctetsIn + t->OctetsOut) / divisor);
 121     prompt_Printf(prompt, "  %s %6qu bytes/sec in, %6qu bytes/sec out "
 122                   "(over the last %d secs)\n",
 123                   t->downtime ? "average  " : "currently",
 124                   t->in.OctetsPerSecond, t->out.OctetsPerSecond,
 125                   secs_up > t->SamplePeriod ? t->SamplePeriod : secs_up);
 126     prompt_Printf(prompt, "  peak      %6qu bytes/sec on %s",
 127                   t->BestOctetsPerSecond, ctime(&t->BestOctetsPerSecondTime));
 128   } else
 129     prompt_Printf(prompt, "Overall %llu bytes/sec\n",
 130                   (t->OctetsIn + t->OctetsOut) / divisor);
 131 }
 132
 133
 134 void
 135 throughput_log(struct pppThroughput *t, int level, const char *title)
 136 {
 137   if (t->uptime) {
 138     int secs_up;
 139
 140     secs_up = throughput_uptime(t);
 141     if (title == NULL)
 142       title = "";
 143     log_Printf(level, "%s%sConnect time: %d secs: %llu octets in, %llu octets"
 144                " out\n", title, *title ? ": " : "", secs_up, t->OctetsIn,
 145                t->OctetsOut);
 146     log_Printf(level, "%s%s%llu packets in, %llu packets out\n",
 147                title, *title ? ": " : "",  t->PacketsIn, t->PacketsOut);
 148     if (secs_up == 0)
 149       secs_up = 1;
 150     if (t->rolling)
 151       log_Printf(level, " total %llu bytes/sec, peak %llu bytes/sec on %s",
 152                  (t->OctetsIn + t->OctetsOut) / secs_up, t->BestOctetsPerSecond,
 153                  ctime(&t->BestOctetsPerSecondTime));
 154     else
 155       log_Printf(level, " total %llu bytes/sec\n",
 156                  (t->OctetsIn + t->OctetsOut) / secs_up);
 157   }
 158 }
 159
 160 static void
 161 throughput_sampler(void *v)
 162 {
 163   struct pppThroughput *t = (struct pppThroughput *)v;
 164   unsigned long long old;
 165   int uptime, divisor;
 166   unsigned long long octets;
 167
 168   timer_Stop(&t->Timer);
 169
 170   uptime = throughput_uptime(t);
 171   divisor = uptime < t->SamplePeriod ? uptime + 1 : t->SamplePeriod;
 172
 173   old = t->in.SampleOctets[t->nSample];
 174   t->in.SampleOctets[t->nSample] = t->OctetsIn;
 175   t->in.OctetsPerSecond = (t->in.SampleOctets[t->nSample] - old) / divisor;
 176
 177   old = t->out.SampleOctets[t->nSample];
 178   t->out.SampleOctets[t->nSample] = t->OctetsOut;
 179   t->out.OctetsPerSecond = (t->out.SampleOctets[t->nSample] - old) / divisor;
 180
 181   octets = t->in.OctetsPerSecond + t->out.OctetsPerSecond;
 182   if (t->BestOctetsPerSecond < octets) {
 183     t->BestOctetsPerSecond = octets;
 184     time(&t->BestOctetsPerSecondTime);
 185   }
 186
 187   if (++t->nSample == t->SamplePeriod)
 188     t->nSample = 0;
 189
 190   if (t->callback.fn != NULL && uptime >= t->SamplePeriod)
 191     (*t->callback.fn)(t->callback.data);
 192
 193   timer_Start(&t->Timer);
 194 }
 195
 196 void
 197 throughput_start(struct pppThroughput *t, const char *name, int rolling)
 198 {
 199   int i;
 200   timer_Stop(&t->Timer);
 201
 202   for (i = 0; i < t->SamplePeriod; i++)
 203     t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
 204   t->nSample = 0;
 205   t->OctetsIn = t->OctetsOut = 0;
 206   t->in.OctetsPerSecond = t->out.OctetsPerSecond = t->BestOctetsPerSecond = 0;
 207   time(&t->BestOctetsPerSecondTime);
 208   t->downtime = 0;
 209   time(&t->uptime);
 210   throughput_restart(t, name, rolling);
 211 }
 212
 213 void
 214 throughput_restart(struct pppThroughput *t, const char *name, int rolling)
 215 {
 216   timer_Stop(&t->Timer);
 217   t->rolling = rolling ? 1 : 0;
 218   if (t->rolling) {
 219     t->Timer.load = SECTICKS;
 220     t->Timer.func = throughput_sampler;
 221     t->Timer.name = name;
 222     t->Timer.arg = t;
 223     timer_Start(&t->Timer);
 224   } else {
 225     t->Timer.load = 0;
 226     t->Timer.func = NULL;
 227     t->Timer.name = NULL;
 228     t->Timer.arg = NULL;
 229   }
 230 }
 231
 232 void
 233 throughput_stop(struct pppThroughput *t)
 234 {
 235   if (t->Timer.state != TIMER_STOPPED)
 236     time(&t->downtime);
 237   timer_Stop(&t->Timer);
 238 }
 239
 240 void
 241 throughput_addin(struct pppThroughput *t, long long n)
 242 {
 243   t->OctetsIn += n;
 244   t->PacketsIn++;
 245 }
 246
 247 void
 248 throughput_addout(struct pppThroughput *t, long long n)
 249 {
 250   t->OctetsOut += n;
 251   t->PacketsOut++;
 252 }
 253
 254 void
 255 throughput_clear(struct pppThroughput *t, int clear_type, struct prompt *prompt)
 256 {
 257   if (clear_type & (THROUGHPUT_OVERALL|THROUGHPUT_CURRENT)) {
 258     int i;
 259
 260     for (i = 0; i < t->SamplePeriod; i++)
 261       t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
 262     t->nSample = 0;
 263   }
 264
 265   if (clear_type & THROUGHPUT_OVERALL) {
 266     int divisor;
 267
 268     if ((divisor = throughput_uptime(t)) == 0)
 269       divisor = 1;
 270     prompt_Printf(prompt, "overall cleared (was %6qu bytes/sec)\n",
 271                   (t->OctetsIn + t->OctetsOut) / divisor);
 272     t->OctetsIn = t->OctetsOut = 0;
 273     t->downtime = 0;
 274     time(&t->uptime);
 275   }
 276
 277   if (clear_type & THROUGHPUT_CURRENT) {
 278     prompt_Printf(prompt, "current cleared (was %6qu bytes/sec in,"
 279                   " %6qu bytes/sec out)\n",
 280                   t->in.OctetsPerSecond, t->out.OctetsPerSecond);
 281     t->in.OctetsPerSecond = t->out.OctetsPerSecond = 0;
 282   }
 283
 284   if (clear_type & THROUGHPUT_PEAK) {
 285     char *time_buf, *last;
 286
 287     time_buf = ctime(&t->BestOctetsPerSecondTime);
 288     last = time_buf + strlen(time_buf);
 289     if (last > time_buf && *--last == '\n')
 290       *last = '\0';
 291     prompt_Printf(prompt, "peak    cleared (was %6qu bytes/sec on %s)\n",
 292                   t->BestOctetsPerSecond, time_buf);
 293     t->BestOctetsPerSecond = 0;
 294     time(&t->BestOctetsPerSecondTime);
 295   }
 296 }
 297
 298 void
 299 throughput_callback(struct pppThroughput *t, void (*fn)(void *), void *data)
 300 {
 301   t->callback.fn = fn;
 302   t->callback.data = data;
 303 }