src/proc_net_dev.c

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