src/proc_net_dev.c

   1 #ifdef HAVE_CONFIG_H
   2 #include <config.h>
   3 #endif
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 #include "common.h"
   8 #include "appconfig.h"
   9 #include "procfile.h"
  10 #include "rrd.h"
  11 #include "plugin_proc.h"
  12
  13 int do_proc_net_dev(int update_every, unsigned long long dt) {
  14         static procfile *ff = NULL;
  15         static int enable_new_interfaces = -1;
  16         static int do_bandwidth = -1, do_packets = -1, do_errors = -1, do_drops = -1, do_fifo = -1, do_compressed = -1, do_events = -1;
  17
  18         if(dt) {};
  19
  20         if(!ff) {
  21                 char filename[FILENAME_MAX + 1];
  22                 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/dev");
  23                 ff = procfile_open(config_get("plugin:proc:/proc/net/dev", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
  24         }
  25         if(!ff) return 1;
  26
  27         ff = procfile_readall(ff);
  28         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  29
  30         if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:proc:/proc/net/dev", "enable new interfaces detected at runtime", 1);
  31
  32         if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean("plugin:proc:/proc/net/dev", "bandwidth for all interfaces", 1);
  33         if(do_packets == -1)    do_packets              = config_get_boolean("plugin:proc:/proc/net/dev", "packets for all interfaces", 1);
  34         if(do_errors == -1)             do_errors               = config_get_boolean("plugin:proc:/proc/net/dev", "errors for all interfaces", 1);
  35         if(do_drops == -1)              do_drops                = config_get_boolean("plugin:proc:/proc/net/dev", "drops for all interfaces", 1);
  36         if(do_fifo == -1)               do_fifo                 = config_get_boolean("plugin:proc:/proc/net/dev", "fifo for all interfaces", 1);
  37         if(do_compressed == -1) do_compressed   = config_get_boolean("plugin:proc:/proc/net/dev", "compressed packets for all interfaces", 1);
  38         if(do_events == -1)             do_events               = config_get_boolean("plugin:proc:/proc/net/dev", "frames, collisions, carrier coutners for all interfaces", 1);
  39
  40         uint32_t lines = procfile_lines(ff), l;
  41         uint32_t words;
  42
  43         char *iface;
  44         unsigned long long rbytes, rpackets, rerrors, rdrops, rfifo, rframe, rcompressed, rmulticast;
  45         unsigned long long tbytes, tpackets, terrors, tdrops, tfifo, tcollisions, tcarrier, tcompressed;
  46
  47         for(l = 2; l < lines ;l++) {
  48                 words = procfile_linewords(ff, l);
  49                 if(words < 17) continue;
  50
  51                 iface           = procfile_lineword(ff, l, 0);
  52
  53                 rbytes          = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  54                 rpackets        = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  55                 rerrors         = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  56                 rdrops          = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  57                 rfifo           = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  58                 rframe          = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  59                 rcompressed     = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  60                 rmulticast      = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  61
  62                 tbytes          = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  63                 tpackets        = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  64                 terrors         = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  65                 tdrops          = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  66                 tfifo           = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
  67                 tcollisions     = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
  68                 tcarrier        = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
  69                 tcompressed     = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
  70
  71                 {
  72                         char var_name[4096 + 1];
  73                         snprintf(var_name, 4096, "interface %s", iface);
  74                         if(!config_get_boolean("plugin:proc:/proc/net/dev", var_name, enable_new_interfaces)) continue;
  75                 }
  76
  77                 RRDSET *st;
  78
  79                 // --------------------------------------------------------------------
  80
  81                 if(do_bandwidth) {
  82                         st = rrdset_find_bytype("net", iface);
  83                         if(!st) {
  84                                 st = rrdset_create("net", iface, NULL, iface, "Bandwidth", "kilobits/s", 1000, update_every, RRDSET_TYPE_AREA);
  85
  86                                 rrddim_add(st, "received", NULL, 8, 1024 * update_every, RRDDIM_INCREMENTAL);
  87                                 rrddim_add(st, "sent", NULL, -8, 1024 * update_every, RRDDIM_INCREMENTAL);
  88                         }
  89                         else rrdset_next(st);
  90
  91                         rrddim_set(st, "received", rbytes);
  92                         rrddim_set(st, "sent", tbytes);
  93                         rrdset_done(st);
  94                 }
  95
  96                 // --------------------------------------------------------------------
  97
  98                 if(do_packets) {
  99                         st = rrdset_find_bytype("net_packets", iface);
 100                         if(!st) {
 101                                 st = rrdset_create("net_packets", iface, NULL, iface, "Packets", "packets/s", 1001, update_every, RRDSET_TYPE_LINE);
 102                                 st->isdetail = 1;
 103
 104                                 rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 105                                 rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 106                                 rrddim_add(st, "multicast", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 107                         }
 108                         else rrdset_next(st);
 109
 110                         rrddim_set(st, "received", rpackets);
 111                         rrddim_set(st, "sent", tpackets);
 112                         rrddim_set(st, "multicast", rmulticast);
 113                         rrdset_done(st);
 114                 }
 115
 116                 // --------------------------------------------------------------------
 117
 118                 if(do_errors) {
 119                         st = rrdset_find_bytype("net_errors", iface);
 120                         if(!st) {
 121                                 st = rrdset_create("net_errors", iface, NULL, iface, "Interface Errors", "errors/s", 1002, update_every, RRDSET_TYPE_LINE);
 122                                 st->isdetail = 1;
 123
 124                                 rrddim_add(st, "inbound", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 125                                 rrddim_add(st, "outbound", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 126                         }
 127                         else rrdset_next(st);
 128
 129                         rrddim_set(st, "inbound", rerrors);
 130                         rrddim_set(st, "outbound", terrors);
 131                         rrdset_done(st);
 132                 }
 133
 134                 // --------------------------------------------------------------------
 135
 136                 if(do_drops) {
 137                         st = rrdset_find_bytype("net_drops", iface);
 138                         if(!st) {
 139                                 st = rrdset_create("net_drops", iface, NULL, iface, "Interface Drops", "drops/s", 1003, update_every, RRDSET_TYPE_LINE);
 140                                 st->isdetail = 1;
 141
 142                                 rrddim_add(st, "inbound", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 143                                 rrddim_add(st, "outbound", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 144                         }
 145                         else rrdset_next(st);
 146
 147                         rrddim_set(st, "inbound", rdrops);
 148                         rrddim_set(st, "outbound", tdrops);
 149                         rrdset_done(st);
 150                 }
 151
 152                 // --------------------------------------------------------------------
 153
 154                 if(do_fifo) {
 155                         st = rrdset_find_bytype("net_fifo", iface);
 156                         if(!st) {
 157                                 st = rrdset_create("net_fifo", iface, NULL, iface, "Interface Queue", "packets", 1100, update_every, RRDSET_TYPE_LINE);
 158                                 st->isdetail = 1;
 159
 160                                 rrddim_add(st, "receive", NULL, 1, 1, RRDDIM_ABSOLUTE);
 161                                 rrddim_add(st, "transmit", NULL, -1, 1, RRDDIM_ABSOLUTE);
 162                         }
 163                         else rrdset_next(st);
 164
 165                         rrddim_set(st, "receive", rfifo);
 166                         rrddim_set(st, "transmit", tfifo);
 167                         rrdset_done(st);
 168                 }
 169
 170                 // --------------------------------------------------------------------
 171
 172                 if(do_compressed) {
 173                         st = rrdset_find_bytype("net_compressed", iface);
 174                         if(!st) {
 175                                 st = rrdset_create("net_compressed", iface, NULL, iface, "Compressed Packets", "packets/s", 1200, update_every, RRDSET_TYPE_LINE);
 176                                 st->isdetail = 1;
 177
 178                                 rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 179                                 rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 180                         }
 181                         else rrdset_next(st);
 182
 183                         rrddim_set(st, "received", rcompressed);
 184                         rrddim_set(st, "sent", tcompressed);
 185                         rrdset_done(st);
 186                 }
 187
 188                 // --------------------------------------------------------------------
 189
 190                 if(do_events) {
 191                         st = rrdset_find_bytype("net_events", iface);
 192                         if(!st) {
 193                                 st = rrdset_create("net_events", iface, NULL, iface, "Network Interface Events", "events/s", 1200, update_every, RRDSET_TYPE_LINE);
 194                                 st->isdetail = 1;
 195
 196                                 rrddim_add(st, "frames", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 197                                 rrddim_add(st, "collisions", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 198                                 rrddim_add(st, "carrier", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 199                         }
 200                         else rrdset_next(st);
 201
 202                         rrddim_set(st, "frames", rframe);
 203                         rrddim_set(st, "collisions", tcollisions);
 204                         rrddim_set(st, "carrier", tcarrier);
 205                         rrdset_done(st);
 206                 }
 207         }
 208
 209         return 0;
 210 }