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