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 counters 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 ddo_bandwidth = do_bandwidth, ddo_packets = do_packets, ddo_errors = do_errors, ddo_drops = do_drops, ddo_fifo = do_fifo, ddo_compressed = do_compressed, ddo_events = do_events;
  74
  75                 if(rerrors == 0 && terrors == 0) ddo_errors = 0;
  76                 if(rdrops == 0 && tdrops == 0) ddo_drops = 0;
  77                 if(rfifo == 0 && tfifo == 0) ddo_fifo = 0;
  78                 if(rcompressed == 0 && tcompressed == 0) ddo_compressed = 0;
  79                 if(rframe == 0 && tcollisions == 0 && tcarrier == 0) ddo_events = 0;
  80
  81                 int default_enable = enable_new_interfaces;
  82
  83                 // prevent unused interfaces from creating charts
  84                 if(!rbytes && !tbytes || strcmp(iface, "lo") == 0)
  85                         default_enable = 0;
  86                 else {
  87                         int len = strlen(iface);
  88                         if(len >= 4 && strcmp(&iface[len-4], "-ifb") == 0)
  89                                 default_enable = enable_ifb_interfaces;
  90                 }
  91
  92                 // check if the user wants it
  93                 {
  94                         char var_name[512 + 1];
  95                         snprintf(var_name, 512, "plugin:proc:/proc/net/dev:%s", iface);
  96                         if(!config_get_boolean(var_name, "enabled", default_enable)) continue;
  97
  98                         ddo_errors = config_get_boolean(var_name, "errors", ddo_errors);
  99                         ddo_drops = config_get_boolean(var_name, "drops", ddo_drops);
 100                         ddo_fifo = config_get_boolean(var_name, "fifo", ddo_fifo);
 101                         ddo_compressed = config_get_boolean(var_name, "compressed", ddo_compressed);
 102                         ddo_events = config_get_boolean(var_name, "events", ddo_events);
 103                 }
 104
 105                 RRDSET *st;
 106
 107                 // --------------------------------------------------------------------
 108
 109                 if(ddo_bandwidth) {
 110                         st = rrdset_find_bytype("net", iface);
 111                         if(!st) {
 112                                 st = rrdset_create("net", iface, NULL, iface, "Bandwidth", "kilobits/s", 1000, update_every, RRDSET_TYPE_AREA);
 113
 114                                 rrddim_add(st, "received", NULL, 8, 1024, RRDDIM_INCREMENTAL);
 115                                 rrddim_add(st, "sent", NULL, -8, 1024, RRDDIM_INCREMENTAL);
 116                         }
 117                         else rrdset_next(st);
 118
 119                         rrddim_set(st, "received", rbytes);
 120                         rrddim_set(st, "sent", tbytes);
 121                         rrdset_done(st);
 122                 }
 123
 124                 // --------------------------------------------------------------------
 125
 126                 if(ddo_packets) {
 127                         st = rrdset_find_bytype("net_packets", iface);
 128                         if(!st) {
 129                                 st = rrdset_create("net_packets", iface, NULL, iface, "Packets", "packets/s", 1001, update_every, RRDSET_TYPE_LINE);
 130                                 st->isdetail = 1;
 131
 132                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 133                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 134                                 rrddim_add(st, "multicast", NULL, 1, 1, RRDDIM_INCREMENTAL);
 135                         }
 136                         else rrdset_next(st);
 137
 138                         rrddim_set(st, "received", rpackets);
 139                         rrddim_set(st, "sent", tpackets);
 140                         rrddim_set(st, "multicast", rmulticast);
 141                         rrdset_done(st);
 142                 }
 143
 144                 // --------------------------------------------------------------------
 145
 146                 if(ddo_errors) {
 147                         st = rrdset_find_bytype("net_errors", iface);
 148                         if(!st) {
 149                                 st = rrdset_create("net_errors", iface, NULL, iface, "Interface Errors", "errors/s", 1002, update_every, RRDSET_TYPE_LINE);
 150                                 st->isdetail = 1;
 151
 152                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 153                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 154                         }
 155                         else rrdset_next(st);
 156
 157                         rrddim_set(st, "inbound", rerrors);
 158                         rrddim_set(st, "outbound", terrors);
 159                         rrdset_done(st);
 160                 }
 161
 162                 // --------------------------------------------------------------------
 163
 164                 if(ddo_drops) {
 165                         st = rrdset_find_bytype("net_drops", iface);
 166                         if(!st) {
 167                                 st = rrdset_create("net_drops", iface, NULL, iface, "Interface Drops", "drops/s", 1003, update_every, RRDSET_TYPE_LINE);
 168                                 st->isdetail = 1;
 169
 170                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 171                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 172                         }
 173                         else rrdset_next(st);
 174
 175                         rrddim_set(st, "inbound", rdrops);
 176                         rrddim_set(st, "outbound", tdrops);
 177                         rrdset_done(st);
 178                 }
 179
 180                 // --------------------------------------------------------------------
 181
 182                 if(ddo_fifo) {
 183                         st = rrdset_find_bytype("net_fifo", iface);
 184                         if(!st) {
 185                                 st = rrdset_create("net_fifo", iface, NULL, iface, "Interface Queue", "packets", 1100, update_every, RRDSET_TYPE_LINE);
 186                                 st->isdetail = 1;
 187
 188                                 rrddim_add(st, "receive", NULL, 1, 1, RRDDIM_ABSOLUTE);
 189                                 rrddim_add(st, "transmit", NULL, -1, 1, RRDDIM_ABSOLUTE);
 190                         }
 191                         else rrdset_next(st);
 192
 193                         rrddim_set(st, "receive", rfifo);
 194                         rrddim_set(st, "transmit", tfifo);
 195                         rrdset_done(st);
 196                 }
 197
 198                 // --------------------------------------------------------------------
 199
 200                 if(ddo_compressed) {
 201                         st = rrdset_find_bytype("net_compressed", iface);
 202                         if(!st) {
 203                                 st = rrdset_create("net_compressed", iface, NULL, iface, "Compressed Packets", "packets/s", 1200, update_every, RRDSET_TYPE_LINE);
 204                                 st->isdetail = 1;
 205
 206                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 207                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 208                         }
 209                         else rrdset_next(st);
 210
 211                         rrddim_set(st, "received", rcompressed);
 212                         rrddim_set(st, "sent", tcompressed);
 213                         rrdset_done(st);
 214                 }
 215
 216                 // --------------------------------------------------------------------
 217
 218                 if(ddo_events) {
 219                         st = rrdset_find_bytype("net_events", iface);
 220                         if(!st) {
 221                                 st = rrdset_create("net_events", iface, NULL, iface, "Network Interface Events", "events/s", 1200, update_every, RRDSET_TYPE_LINE);
 222                                 st->isdetail = 1;
 223
 224                                 rrddim_add(st, "frames", NULL, 1, 1, RRDDIM_INCREMENTAL);
 225                                 rrddim_add(st, "collisions", NULL, -1, 1, RRDDIM_INCREMENTAL);
 226                                 rrddim_add(st, "carrier", NULL, -1, 1, RRDDIM_INCREMENTAL);
 227                         }
 228                         else rrdset_next(st);
 229
 230                         rrddim_set(st, "frames", rframe);
 231                         rrddim_set(st, "collisions", tcollisions);
 232                         rrddim_set(st, "carrier", tcarrier);
 233                         rrdset_done(st);
 234                 }
 235         }
 236
 237         return 0;
 238 }