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  * $FreeBSD$
  27  */
  28
  29 #include <sys/types.h>
  30
  31 #include <stdarg.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <termios.h>
  36 #include <time.h>
  37
  38 #include "log.h"
  39 #include "timer.h"
  40 #include "throughput.h"
  41 #include "descriptor.h"
  42 #include "prompt.h"
  43
  44
  45 void
  46 throughput_init(struct pppThroughput *t, int period)
  47 {
  48   t->OctetsIn = t->OctetsOut = t->PacketsIn = t->PacketsOut = 0;
  49   t->SamplePeriod = period;
  50   t->in.SampleOctets = (long long *)
  51     calloc(period, sizeof *t->in.SampleOctets);
  52   t->in.OctetsPerSecond = 0;
  53   t->out.SampleOctets = (long long *)
  54     calloc(period, sizeof *t->out.SampleOctets);
  55   t->out.OctetsPerSecond = 0;
  56   t->BestOctetsPerSecond = 0;
  57   t->nSample = 0;
  58   time(&t->BestOctetsPerSecondTime);
  59   memset(&t->Timer, '\0', sizeof t->Timer);
  60   t->Timer.name = "throughput";
  61   t->uptime = 0;
  62   t->downtime = 0;
  63   t->rolling = 0;
  64   t->callback.data = NULL;
  65   t->callback.fn = NULL;
  66   throughput_stop(t);
  67 }
  68
  69 void
  70 throughput_destroy(struct pppThroughput *t)
  71 {
  72   if (t && t->in.SampleOctets) {
  73     throughput_stop(t);
  74     free(t->in.SampleOctets);
  75     free(t->out.SampleOctets);
  76     t->in.SampleOctets = NULL;
  77     t->out.SampleOctets = NULL;
  78   }
  79 }
  80
  81 int
  82 throughput_uptime(struct pppThroughput *t)
  83 {
  84   time_t downat;
  85
  86   downat = t->downtime ? t->downtime : time(NULL);
  87   if (t->uptime && downat < t->uptime) {
  88     /* Euch !  The clock's gone back ! */
  89     int i;
  90
  91     for (i = 0; i < t->SamplePeriod; i++)
  92       t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
  93     t->nSample = 0;
  94     t->uptime = downat;
  95   }
  96   return t->uptime ? downat - t->uptime : 0;
  97 }
  98
  99 void
 100 throughput_disp(struct pppThroughput *t, struct prompt *prompt)
 101 {
 102   int secs_up, divisor;
 103
 104   secs_up = throughput_uptime(t);
 105   prompt_Printf(prompt, "Connect time: %d:%02d:%02d", secs_up / 3600,
 106                 (secs_up / 60) % 60, secs_up % 60);
 107   if (t->downtime)
 108     prompt_Printf(prompt, " - down at %s", ctime(&t->downtime));
 109   else
 110     prompt_Printf(prompt, "\n");
 111
 112   divisor = secs_up ? secs_up : 1;
 113   prompt_Printf(prompt, "%llu octets in, %llu octets out\n",
 114                 t->OctetsIn, t->OctetsOut);
 115   prompt_Printf(prompt, "%llu packets in, %llu packets out\n",
 116                 t->PacketsIn, t->PacketsOut);
 117   if (t->rolling) {
 118     prompt_Printf(prompt, "  overall   %6llu bytes/sec\n",
 119                   (t->OctetsIn + t->OctetsOut) / divisor);
 120     prompt_Printf(prompt, "  %s %6llu bytes/sec in, %6llu bytes/sec out "
 121                   "(over the last %d secs)\n",
 122                   t->downtime ? "average  " : "currently",
 123                   t->in.OctetsPerSecond, t->out.OctetsPerSecond,
 124                   secs_up > t->SamplePeriod ? t->SamplePeriod : secs_up);
 125     prompt_Printf(prompt, "  peak      %6llu bytes/sec on %s",
 126                   t->BestOctetsPerSecond, ctime(&t->BestOctetsPerSecondTime));
 127   } else
 128     prompt_Printf(prompt, "Overall %llu bytes/sec\n",
 129                   (t->OctetsIn + t->OctetsOut) / divisor);
 130 }
 131
 132
 133 void
 134 throughput_log(struct pppThroughput *t, int level, const char *title)
 135 {
 136   if (t->uptime) {
 137     int secs_up;
 138
 139     secs_up = throughput_uptime(t);
 140     if (title == NULL)
 141       title = "";
 142     log_Printf(level, "%s%sConnect time: %d secs: %llu octets in, %llu octets"
 143                " out\n", title, *title ? ": " : "", secs_up, t->OctetsIn,
 144                t->OctetsOut);
 145     log_Printf(level, "%s%s%llu packets in, %llu packets out\n",
 146                title, *title ? ": " : "",  t->PacketsIn, t->PacketsOut);
 147     if (secs_up == 0)
 148       secs_up = 1;
 149     if (t->rolling)
 150       log_Printf(level, " total %llu bytes/sec, peak %llu bytes/sec on %s",
 151                  (t->OctetsIn + t->OctetsOut) / secs_up, t->BestOctetsPerSecond,
 152                  ctime(&t->BestOctetsPerSecondTime));
 153     else
 154       log_Printf(level, " total %llu bytes/sec\n",
 155                  (t->OctetsIn + t->OctetsOut) / secs_up);
 156   }
 157 }
 158
 159 static void
 160 throughput_sampler(void *v)
 161 {
 162   struct pppThroughput *t = (struct pppThroughput *)v;
 163   unsigned long long old;
 164   int uptime, divisor;
 165   unsigned long long octets;
 166
 167   timer_Stop(&t->Timer);
 168
 169   uptime = throughput_uptime(t);
 170   divisor = uptime < t->SamplePeriod ? uptime + 1 : t->SamplePeriod;
 171
 172   old = t->in.SampleOctets[t->nSample];
 173   t->in.SampleOctets[t->nSample] = t->OctetsIn;
 174   t->in.OctetsPerSecond = (t->in.SampleOctets[t->nSample] - old) / divisor;
 175
 176   old = t->out.SampleOctets[t->nSample];
 177   t->out.SampleOctets[t->nSample] = t->OctetsOut;
 178   t->out.OctetsPerSecond = (t->out.SampleOctets[t->nSample] - old) / divisor;
 179
 180   octets = t->in.OctetsPerSecond + t->out.OctetsPerSecond;
 181   if (t->BestOctetsPerSecond < octets) {
 182     t->BestOctetsPerSecond = octets;
 183     time(&t->BestOctetsPerSecondTime);
 184   }
 185
 186   if (++t->nSample == t->SamplePeriod)
 187     t->nSample = 0;
 188
 189   if (t->callback.fn != NULL && uptime >= t->SamplePeriod)
 190     (*t->callback.fn)(t->callback.data);
 191
 192   timer_Start(&t->Timer);
 193 }
 194
 195 void
 196 throughput_start(struct pppThroughput *t, const char *name, int rolling)
 197 {
 198   int i;
 199   timer_Stop(&t->Timer);
 200
 201   for (i = 0; i < t->SamplePeriod; i++)
 202     t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
 203   t->nSample = 0;
 204   t->OctetsIn = t->OctetsOut = t->PacketsIn = t->PacketsOut = 0;
 205   t->in.OctetsPerSecond = t->out.OctetsPerSecond = t->BestOctetsPerSecond = 0;
 206   time(&t->BestOctetsPerSecondTime);
 207   t->downtime = 0;
 208   time(&t->uptime);
 209   throughput_restart(t, name, rolling);
 210 }
 211
 212 void
 213 throughput_restart(struct pppThroughput *t, const char *name, int rolling)
 214 {
 215   timer_Stop(&t->Timer);
 216   t->rolling = rolling ? 1 : 0;
 217   if (t->rolling) {
 218     t->Timer.load = SECTICKS;
 219     t->Timer.func = throughput_sampler;
 220     t->Timer.name = name;
 221     t->Timer.arg = t;
 222     timer_Start(&t->Timer);
 223   } else {
 224     t->Timer.load = 0;
 225     t->Timer.func = NULL;
 226     t->Timer.name = NULL;
 227     t->Timer.arg = NULL;
 228   }
 229 }
 230
 231 void
 232 throughput_stop(struct pppThroughput *t)
 233 {
 234   if (t->Timer.state != TIMER_STOPPED)
 235     time(&t->downtime);
 236   timer_Stop(&t->Timer);
 237 }
 238
 239 void
 240 throughput_addin(struct pppThroughput *t, long long n)
 241 {
 242   t->OctetsIn += n;
 243   t->PacketsIn++;
 244 }
 245
 246 void
 247 throughput_addout(struct pppThroughput *t, long long n)
 248 {
 249   t->OctetsOut += n;
 250   t->PacketsOut++;
 251 }
 252
 253 void
 254 throughput_clear(struct pppThroughput *t, int clear_type, struct prompt *prompt)
 255 {
 256   if (clear_type & (THROUGHPUT_OVERALL|THROUGHPUT_CURRENT)) {
 257     int i;
 258
 259     for (i = 0; i < t->SamplePeriod; i++)
 260       t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0;
 261     t->nSample = 0;
 262   }
 263
 264   if (clear_type & THROUGHPUT_OVERALL) {
 265     int divisor;
 266
 267     if ((divisor = throughput_uptime(t)) == 0)
 268       divisor = 1;
 269     prompt_Printf(prompt, "overall cleared (was %6llu bytes/sec)\n",
 270                   (t->OctetsIn + t->OctetsOut) / divisor);
 271     t->OctetsIn = t->OctetsOut = t->PacketsIn = t->PacketsOut = 0;
 272     t->downtime = 0;
 273     time(&t->uptime);
 274   }
 275
 276   if (clear_type & THROUGHPUT_CURRENT) {
 277     prompt_Printf(prompt, "current cleared (was %6llu bytes/sec in,"
 278                   " %6llu bytes/sec out)\n",
 279                   t->in.OctetsPerSecond, t->out.OctetsPerSecond);
 280     t->in.OctetsPerSecond = t->out.OctetsPerSecond = 0;
 281   }
 282
 283   if (clear_type & THROUGHPUT_PEAK) {
 284     char *time_buf, *last;
 285
 286     time_buf = ctime(&t->BestOctetsPerSecondTime);
 287     last = time_buf + strlen(time_buf);
 288     if (last > time_buf && *--last == '\n')
 289       *last = '\0';
 290     prompt_Printf(prompt, "peak    cleared (was %6llu bytes/sec on %s)\n",
 291                   t->BestOctetsPerSecond, time_buf);
 292     t->BestOctetsPerSecond = 0;
 293     time(&t->BestOctetsPerSecondTime);
 294   }
 295 }
 296
 297 void
 298 throughput_callback(struct pppThroughput *t, void (*fn)(void *), void *data)
 299 {
 300   t->callback.fn = fn;
 301   t->callback.data = data;
 302 }