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 #include <string.h>
   7
   8 #include "common.h"
   9 #include "appconfig.h"
  10 #include "procfile.h"
  11 #include "rrd.h"
  12 #include "plugin_proc.h"
  13
  14 int do_proc_net_dev(int update_every, unsigned long long dt) {
  15         static procfile *ff = NULL;
  16         static int enable_new_interfaces = -1, enable_ifb_interfaces = -1;
  17         static int do_bandwidth = -1, do_packets = -1, do_errors = -1, do_drops = -1, do_fifo = -1, do_compressed = -1, do_events = -1;
  18
  19         if(dt) {};
  20
  21         if(!ff) {
  22                 char filename[FILENAME_MAX + 1];
  23                 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/dev");
  24                 ff = procfile_open(config_get("plugin:proc:/proc/net/dev", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
  25         }
  26         if(!ff) return 1;
  27
  28         ff = procfile_readall(ff);
  29         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  30
  31         if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:proc:/proc/net/dev", "enable new interfaces detected at runtime", 1);
  32         if(enable_ifb_interfaces == -1) enable_ifb_interfaces = config_get_boolean("plugin:proc:/proc/net/dev", "enable ifb interfaces", 0);
  33
  34         if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean("plugin:proc:/proc/net/dev", "bandwidth for all interfaces", 1);
  35         if(do_packets == -1)    do_packets              = config_get_boolean("plugin:proc:/proc/net/dev", "packets for all interfaces", 1);
  36         if(do_errors == -1)             do_errors               = config_get_boolean("plugin:proc:/proc/net/dev", "errors for all interfaces", 1);
  37         if(do_drops == -1)              do_drops                = config_get_boolean("plugin:proc:/proc/net/dev", "drops for all interfaces", 1);
  38         if(do_fifo == -1)               do_fifo                 = config_get_boolean("plugin:proc:/proc/net/dev", "fifo for all interfaces", 1);
  39         if(do_compressed == -1) do_compressed   = config_get_boolean("plugin:proc:/proc/net/dev", "compressed packets for all interfaces", 1);
  40         if(do_events == -1)             do_events               = config_get_boolean("plugin:proc:/proc/net/dev", "frames, collisions, carrier coutners for all interfaces", 1);
  41
  42         uint32_t lines = procfile_lines(ff), l;
  43         uint32_t words;
  44
  45         char *iface;
  46         unsigned long long rbytes, rpackets, rerrors, rdrops, rfifo, rframe, rcompressed, rmulticast;
  47         unsigned long long tbytes, tpackets, terrors, tdrops, tfifo, tcollisions, tcarrier, tcompressed;
  48
  49         for(l = 2; l < lines ;l++) {
  50                 words = procfile_linewords(ff, l);
  51                 if(words < 17) continue;
  52
  53                 iface           = procfile_lineword(ff, l, 0);
  54
  55                 rbytes          = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  56                 rpackets        = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  57                 rerrors         = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  58                 rdrops          = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  59                 rfifo           = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  60                 rframe          = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  61                 rcompressed     = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  62                 rmulticast      = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  63
  64                 tbytes          = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  65                 tpackets        = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  66                 terrors         = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  67                 tdrops          = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  68                 tfifo           = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
  69                 tcollisions     = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
  70                 tcarrier        = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
  71                 tcompressed     = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
  72
  73                 int default_enable = enable_new_interfaces;
  74
  75                 // prevent unused interfaces from creating charts
  76                 if(!rbytes && !tbytes)
  77                         default_enable = 0;
  78                 else {
  79                         int len = strlen(iface);
  80                         if(len >= 4 && strcmp(&iface[len-4], "-ifb") == 0)
  81                                 default_enable = enable_ifb_interfaces;
  82                 }
  83
  84                 // check if the user wants it
  85                 {
  86                         char var_name[512 + 1];
  87                         snprintf(var_name, 512, "interface %s", iface);
  88                         if(!config_get_boolean("plugin:proc:/proc/net/dev", var_name, default_enable)) continue;
  89                 }
  90
  91                 RRDSET *st;
  92
  93                 // --------------------------------------------------------------------
  94
  95                 if(do_bandwidth) {
  96                         st = rrdset_find_bytype("net", iface);
  97                         if(!st) {
  98                                 st = rrdset_create("net", iface, NULL, iface, "Bandwidth", "kilobits/s", 1000, update_every, RRDSET_TYPE_AREA);
  99
 100                                 rrddim_add(st, "received", NULL, 8, 1024, RRDDIM_INCREMENTAL);
 101                                 rrddim_add(st, "sent", NULL, -8, 1024, RRDDIM_INCREMENTAL);
 102                         }
 103                         else rrdset_next(st);
 104
 105                         rrddim_set(st, "received", rbytes);
 106                         rrddim_set(st, "sent", tbytes);
 107                         rrdset_done(st);
 108                 }
 109
 110                 // --------------------------------------------------------------------
 111
 112                 if(do_packets) {
 113                         st = rrdset_find_bytype("net_packets", iface);
 114                         if(!st) {
 115                                 st = rrdset_create("net_packets", iface, NULL, iface, "Packets", "packets/s", 1001, update_every, RRDSET_TYPE_LINE);
 116                                 st->isdetail = 1;
 117
 118                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 119                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 120                                 rrddim_add(st, "multicast", NULL, 1, 1, RRDDIM_INCREMENTAL);
 121                         }
 122                         else rrdset_next(st);
 123
 124                         rrddim_set(st, "received", rpackets);
 125                         rrddim_set(st, "sent", tpackets);
 126                         rrddim_set(st, "multicast", rmulticast);
 127                         rrdset_done(st);
 128                 }
 129
 130                 // --------------------------------------------------------------------
 131
 132                 if(do_errors) {
 133                         st = rrdset_find_bytype("net_errors", iface);
 134                         if(!st) {
 135                                 st = rrdset_create("net_errors", iface, NULL, iface, "Interface Errors", "errors/s", 1002, update_every, RRDSET_TYPE_LINE);
 136                                 st->isdetail = 1;
 137
 138                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 139                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 140                         }
 141                         else rrdset_next(st);
 142
 143                         rrddim_set(st, "inbound", rerrors);
 144                         rrddim_set(st, "outbound", terrors);
 145                         rrdset_done(st);
 146                 }
 147
 148                 // --------------------------------------------------------------------
 149
 150                 if(do_drops) {
 151                         st = rrdset_find_bytype("net_drops", iface);
 152                         if(!st) {
 153                                 st = rrdset_create("net_drops", iface, NULL, iface, "Interface Drops", "drops/s", 1003, update_every, RRDSET_TYPE_LINE);
 154                                 st->isdetail = 1;
 155
 156                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 157                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 158                         }
 159                         else rrdset_next(st);
 160
 161                         rrddim_set(st, "inbound", rdrops);
 162                         rrddim_set(st, "outbound", tdrops);
 163                         rrdset_done(st);
 164                 }
 165
 166                 // --------------------------------------------------------------------
 167
 168                 if(do_fifo) {
 169                         st = rrdset_find_bytype("net_fifo", iface);
 170                         if(!st) {
 171                                 st = rrdset_create("net_fifo", iface, NULL, iface, "Interface Queue", "packets", 1100, update_every, RRDSET_TYPE_LINE);
 172                                 st->isdetail = 1;
 173
 174                                 rrddim_add(st, "receive", NULL, 1, 1, RRDDIM_ABSOLUTE);
 175                                 rrddim_add(st, "transmit", NULL, -1, 1, RRDDIM_ABSOLUTE);
 176                         }
 177                         else rrdset_next(st);
 178
 179                         rrddim_set(st, "receive", rfifo);
 180                         rrddim_set(st, "transmit", tfifo);
 181                         rrdset_done(st);
 182                 }
 183
 184                 // --------------------------------------------------------------------
 185
 186                 if(do_compressed) {
 187                         st = rrdset_find_bytype("net_compressed", iface);
 188                         if(!st) {
 189                                 st = rrdset_create("net_compressed", iface, NULL, iface, "Compressed Packets", "packets/s", 1200, update_every, RRDSET_TYPE_LINE);
 190                                 st->isdetail = 1;
 191
 192                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 193                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 194                         }
 195                         else rrdset_next(st);
 196
 197                         rrddim_set(st, "received", rcompressed);
 198                         rrddim_set(st, "sent", tcompressed);
 199                         rrdset_done(st);
 200                 }
 201
 202                 // --------------------------------------------------------------------
 203
 204                 if(do_events) {
 205                         st = rrdset_find_bytype("net_events", iface);
 206                         if(!st) {
 207                                 st = rrdset_create("net_events", iface, NULL, iface, "Network Interface Events", "events/s", 1200, update_every, RRDSET_TYPE_LINE);
 208                                 st->isdetail = 1;
 209
 210                                 rrddim_add(st, "frames", NULL, 1, 1, RRDDIM_INCREMENTAL);
 211                                 rrddim_add(st, "collisions", NULL, -1, 1, RRDDIM_INCREMENTAL);
 212                                 rrddim_add(st, "carrier", NULL, -1, 1, RRDDIM_INCREMENTAL);
 213                         }
 214                         else rrdset_next(st);
 215
 216                         rrddim_set(st, "frames", rframe);
 217                         rrddim_set(st, "collisions", tcollisions);
 218                         rrddim_set(st, "carrier", tcarrier);
 219                         rrdset_done(st);
 220                 }
 221         }
 222
 223         return 0;
 224 }