throughput.c revision 31921 
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 *	$Id$
27 */
28
29#include <sys/param.h>
30
31#include <stdio.h>
32#include <time.h>
33#include <netinet/in.h>
34
35#include "command.h"
36#include "mbuf.h"
37#include "log.h"
38#include "timer.h"
39#include "throughput.h"
40#include "defs.h"
41#include "loadalias.h"
42#include "vars.h"
43
44void
45throughput_init(struct pppThroughput *t)
46{
47  int f;
48
49  t->OctetsIn = t->OctetsOut = 0;
50  for (f = 0; f < SAMPLE_PERIOD; f++)
51    t->SampleOctets[f] = 0;
52  t->OctetsPerSecond = t->BestOctetsPerSecond = t->nSample = 0;
53  throughput_stop(t);
54}
55
56void
57throughput_disp(struct pppThroughput *t, FILE *f)
58{
59  int secs_up;
60
61  secs_up = t->uptime ? time(NULL) - t->uptime : 0;
62  fprintf(f, "Connect time: %d secs\n", secs_up);
63  if (secs_up == 0)
64    secs_up = 1;
65  fprintf(f, "%ld octets in, %ld octets out\n", t->OctetsIn, t->OctetsOut);
66  if (Enabled(ConfThroughput)) {
67    fprintf(f, "  overall   %5ld bytes/sec\n",
68            (t->OctetsIn+t->OctetsOut)/secs_up);
69    fprintf(f, "  currently %5d bytes/sec\n", t->OctetsPerSecond);
70    fprintf(f, "  peak      %5d bytes/sec\n", t->BestOctetsPerSecond);
71  } else
72    fprintf(f, "Overall %ld bytes/sec\n", (t->OctetsIn+t->OctetsOut)/secs_up);
73}
74
75
76void
77throughput_log(struct pppThroughput *t, int level, const char *title)
78{
79  if (t->uptime) {
80    int secs_up;
81
82    secs_up = t->uptime ? time(NULL) - t->uptime : 0;
83    if (title)
84      LogPrintf(level, "%s: Connect time: %d secs: %ld octets in, %ld octets"
85                " out\n", title, secs_up, t->OctetsIn, t->OctetsOut);
86    else
87      LogPrintf(level, "Connect time: %d secs: %ld octets in, %ld octets out\n",
88                secs_up, t->OctetsIn, t->OctetsOut);
89    if (secs_up == 0)
90      secs_up = 1;
91    if (Enabled(ConfThroughput))
92      LogPrintf(level, " total %ld bytes/sec, peak %d bytes/sec\n",
93                (t->OctetsIn+t->OctetsOut)/secs_up, t->BestOctetsPerSecond);
94    else
95      LogPrintf(level, " total %ld bytes/sec\n",
96                (t->OctetsIn+t->OctetsOut)/secs_up);
97  }
98}
99
100static void
101throughput_sampler(void *v)
102{
103  struct pppThroughput *t = (struct pppThroughput *)v;
104  u_long old;
105
106  StopTimer(&t->Timer);
107  t->Timer.state = TIMER_STOPPED;
108
109  old = t->SampleOctets[t->nSample];
110  t->SampleOctets[t->nSample] = t->OctetsIn + t->OctetsOut;
111  t->OctetsPerSecond = (t->SampleOctets[t->nSample] - old) / SAMPLE_PERIOD;
112  if (t->BestOctetsPerSecond < t->OctetsPerSecond)
113    t->BestOctetsPerSecond = t->OctetsPerSecond;
114  if (++t->nSample == SAMPLE_PERIOD)
115    t->nSample = 0;
116
117  StartTimer(&t->Timer);
118}
119
120void
121throughput_start(struct pppThroughput *t)
122{
123  throughput_init(t);
124  time(&t->uptime);
125  if (Enabled(ConfThroughput)) {
126    t->Timer.state = TIMER_STOPPED;
127    t->Timer.load = SECTICKS;
128    t->Timer.func = throughput_sampler;
129    t->Timer.arg = t;
130    StartTimer(&t->Timer);
131  }
132}
133
134void
135throughput_stop(struct pppThroughput *t)
136{
137  if (Enabled(ConfThroughput))
138    StopTimer(&t->Timer);
139}
140
141void
142throughput_addin(struct pppThroughput *t, int n)
143{
144  t->OctetsIn += n;
145}
146
147void
148throughput_addout(struct pppThroughput *t, int n)
149{
150  t->OctetsOut += n;
151}
152