src/proc_net_dev.c

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