tools/tools/npe/npestats/main.c

   1 /*-
   2  * Copyright (c) 2009 Sam Leffler, Errno Consulting
   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  *    without modification.
  11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
  13  *    redistribution must be conditioned upon including a substantially
  14  *    similar Disclaimer requirement for further binary redistribution.
  15  *
  16  * NO WARRANTY
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
  20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
  22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  27  * THE POSSIBILITY OF SUCH DAMAGES.
  28  *
  29  * $FreeBSD$
  30  */
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <signal.h>
  35 #include <strings.h>
  36 #include <unistd.h>
  37 #include <err.h>
  38
  39 #include "npestats.h"
  40
  41 static struct {
  42         const char *tag;
  43         const char *fmt;
  44 } tags[] = {
  45   { "default",
  46     "align,fcs,macrx,overrun,learn,large,stp,badsrc,underflow,collision1,collisionM,deferred,late,excessive,mactx,carrier,toobig"
  47   },
  48 };
  49
  50 static const char *
  51 getfmt(const char *tag)
  52 {
  53 #define N(a)    (sizeof(a)/sizeof(a[0]))
  54         int i;
  55         for (i = 0; i < N(tags); i++)
  56                 if (strcasecmp(tags[i].tag, tag) == 0)
  57                         return tags[i].fmt;
  58         return tag;
  59 #undef N
  60 }
  61
  62 static int signalled;
  63
  64 static void
  65 catchalarm(int signo __unused)
  66 {
  67         signalled = 1;
  68 }
  69
  70 int
  71 main(int argc, char *argv[])
  72 {
  73         struct npestatfoo *wf;
  74         const char *ifname;
  75         int c, banner = 1;
  76
  77         ifname = getenv("NPE");
  78         if (ifname == NULL)
  79                 ifname = "npe0";
  80         wf = npestats_new(ifname, getfmt("default"));
  81         while ((c = getopt(argc, argv, "bi:lo:z")) != -1) {
  82                 switch (c) {
  83                 case 'b':
  84                         banner = 0;
  85                         break;
  86                 case 'i':
  87                         wf->setifname(wf, optarg);
  88                         break;
  89                 case 'l':
  90                         wf->print_fields(wf, stdout);
  91                         return 0;
  92                 case 'o':
  93                         wf->setfmt(wf, getfmt(optarg));
  94                         break;
  95                 default:
  96                         errx(-1, "usage: %s [-a] [-i ifname] [-l] [-o fmt] [interval]\n", argv[0]);
  97                         /*NOTREACHED*/
  98                 }
  99         }
 100         argc -= optind;
 101         argv += optind;
 102
 103         if (argc > 0) {
 104                 u_long interval = strtoul(argv[0], NULL, 0);
 105                 int line, omask;
 106
 107                 if (interval < 1)
 108                         interval = 1;
 109                 signal(SIGALRM, catchalarm);
 110                 signalled = 0;
 111                 alarm(interval);
 112         banner:
 113                 if (banner)
 114                         wf->print_header(wf, stdout);
 115                 line = 0;
 116         loop:
 117                 if (line != 0) {
 118                         wf->collect_cur(wf);
 119                         wf->print_current(wf, stdout);
 120                         wf->update_tot(wf);
 121                 } else {
 122                         wf->collect_tot(wf);
 123                         wf->print_total(wf, stdout);
 124                 }
 125                 fflush(stdout);
 126                 omask = sigblock(sigmask(SIGALRM));
 127                 if (!signalled)
 128                         sigpause(0);
 129                 sigsetmask(omask);
 130                 signalled = 0;
 131                 alarm(interval);
 132                 line++;
 133                 if (line == 21)         /* XXX tty line count */
 134                         goto banner;
 135                 else
 136                         goto loop;
 137                 /*NOTREACHED*/
 138         } else {
 139                 wf->collect_tot(wf);
 140                 wf->print_verbose(wf, stdout);
 141         }
 142         return 0;
 143 }