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_ondemand("plugin:proc:/proc/net/dev", "enable new interfaces detected at runtime", CONFIG_ONDEMAND_ONDEMAND);
  32         if(enable_ifb_interfaces == -1) enable_ifb_interfaces = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "enable ifb interfaces", CONFIG_ONDEMAND_NO);
  33
  34         if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "bandwidth for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  35         if(do_packets == -1)    do_packets              = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "packets for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  36         if(do_errors == -1)             do_errors               = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "errors for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  37         if(do_drops == -1)              do_drops                = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "drops for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  38         if(do_fifo == -1)               do_fifo                 = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "fifo for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  39         if(do_compressed == -1) do_compressed   = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "compressed packets for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  40         if(do_events == -1)             do_events               = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "frames, collisions, carrier counters for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  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                 int default_enable = enable_new_interfaces;
  76
  77                 // prevent unused interfaces from creating charts
  78                 if(strcmp(iface, "lo") == 0)
  79                         default_enable = 0;
  80                 else {
  81                         int len = strlen(iface);
  82                         if(len >= 4 && strcmp(&iface[len-4], "-ifb") == 0)
  83                                 default_enable = enable_ifb_interfaces;
  84                 }
  85
  86                 // check if the user wants it
  87                 {
  88                         char var_name[512 + 1];
  89                         snprintf(var_name, 512, "plugin:proc:/proc/net/dev:%s", iface);
  90                         default_enable = config_get_boolean_ondemand(var_name, "enabled", default_enable);
  91                         if(default_enable == CONFIG_ONDEMAND_NO) continue;
  92                         if(default_enable == CONFIG_ONDEMAND_ONDEMAND && !rbytes && !tbytes) continue;
  93
  94                         ddo_bandwidth = config_get_boolean_ondemand(var_name, "bandwidth", ddo_bandwidth);
  95                         ddo_packets = config_get_boolean_ondemand(var_name, "packets", ddo_packets);
  96                         ddo_errors = config_get_boolean_ondemand(var_name, "errors", ddo_errors);
  97                         ddo_drops = config_get_boolean_ondemand(var_name, "drops", ddo_drops);
  98                         ddo_fifo = config_get_boolean_ondemand(var_name, "fifo", ddo_fifo);
  99                         ddo_compressed = config_get_boolean_ondemand(var_name, "compressed", ddo_compressed);
 100                         ddo_events = config_get_boolean_ondemand(var_name, "events", ddo_events);
 101
 102                         if(ddo_bandwidth == CONFIG_ONDEMAND_ONDEMAND && rbytes == 0 && tbytes == 0) ddo_bandwidth = 0;
 103                         if(ddo_errors == CONFIG_ONDEMAND_ONDEMAND && rerrors == 0 && terrors == 0) ddo_errors = 0;
 104                         if(ddo_drops == CONFIG_ONDEMAND_ONDEMAND && rdrops == 0 && tdrops == 0) ddo_drops = 0;
 105                         if(ddo_fifo == CONFIG_ONDEMAND_ONDEMAND && rfifo == 0 && tfifo == 0) ddo_fifo = 0;
 106                         if(ddo_compressed == CONFIG_ONDEMAND_ONDEMAND && rcompressed == 0 && tcompressed == 0) ddo_compressed = 0;
 107                         if(ddo_events == CONFIG_ONDEMAND_ONDEMAND && rframe == 0 && tcollisions == 0 && tcarrier == 0) ddo_events = 0;
 108
 109                         // for absolute values, we need to switch the setting to 'yes'
 110                         // to allow it refresh from now on
 111                         // if(ddo_fifo == CONFIG_ONDEMAND_ONDEMAND) config_set(var_name, "fifo", "yes");
 112                 }
 113
 114                 RRDSET *st;
 115
 116                 // --------------------------------------------------------------------
 117
 118                 if(ddo_bandwidth) {
 119                         st = rrdset_find_bytype("net", iface);
 120                         if(!st) {
 121                                 st = rrdset_create("net", iface, NULL, iface, "net.net", "Bandwidth", "kilobits/s", 7000, update_every, RRDSET_TYPE_AREA);
 122
 123                                 rrddim_add(st, "received", NULL, 8, 1024, RRDDIM_INCREMENTAL);
 124                                 rrddim_add(st, "sent", NULL, -8, 1024, RRDDIM_INCREMENTAL);
 125                         }
 126                         else rrdset_next(st);
 127
 128                         rrddim_set(st, "received", rbytes);
 129                         rrddim_set(st, "sent", tbytes);
 130                         rrdset_done(st);
 131                 }
 132
 133                 // --------------------------------------------------------------------
 134
 135                 if(ddo_packets) {
 136                         st = rrdset_find_bytype("net_packets", iface);
 137                         if(!st) {
 138                                 st = rrdset_create("net_packets", iface, NULL, iface, "net.packets", "Packets", "packets/s", 7001, update_every, RRDSET_TYPE_LINE);
 139                                 st->isdetail = 1;
 140
 141                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 142                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 143                                 rrddim_add(st, "multicast", NULL, 1, 1, RRDDIM_INCREMENTAL);
 144                         }
 145                         else rrdset_next(st);
 146
 147                         rrddim_set(st, "received", rpackets);
 148                         rrddim_set(st, "sent", tpackets);
 149                         rrddim_set(st, "multicast", rmulticast);
 150                         rrdset_done(st);
 151                 }
 152
 153                 // --------------------------------------------------------------------
 154
 155                 if(ddo_errors) {
 156                         st = rrdset_find_bytype("net_errors", iface);
 157                         if(!st) {
 158                                 st = rrdset_create("net_errors", iface, NULL, iface, "net.errors", "Interface Errors", "errors/s", 7002, update_every, RRDSET_TYPE_LINE);
 159                                 st->isdetail = 1;
 160
 161                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 162                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 163                         }
 164                         else rrdset_next(st);
 165
 166                         rrddim_set(st, "inbound", rerrors);
 167                         rrddim_set(st, "outbound", terrors);
 168                         rrdset_done(st);
 169                 }
 170
 171                 // --------------------------------------------------------------------
 172
 173                 if(ddo_drops) {
 174                         st = rrdset_find_bytype("net_drops", iface);
 175                         if(!st) {
 176                                 st = rrdset_create("net_drops", iface, NULL, iface, "net.drops", "Interface Drops", "drops/s", 7003, update_every, RRDSET_TYPE_LINE);
 177                                 st->isdetail = 1;
 178
 179                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 180                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 181                         }
 182                         else rrdset_next(st);
 183
 184                         rrddim_set(st, "inbound", rdrops);
 185                         rrddim_set(st, "outbound", tdrops);
 186                         rrdset_done(st);
 187                 }
 188
 189                 // --------------------------------------------------------------------
 190
 191                 if(ddo_fifo) {
 192                         st = rrdset_find_bytype("net_fifo", iface);
 193                         if(!st) {
 194                                 st = rrdset_create("net_fifo", iface, NULL, iface, "net.fifo", "Interface FIFO Buffer Errors", "errors", 7004, update_every, RRDSET_TYPE_LINE);
 195                                 st->isdetail = 1;
 196
 197                                 rrddim_add(st, "receive", NULL, 1, 1, RRDDIM_INCREMENTAL);
 198                                 rrddim_add(st, "transmit", NULL, -1, 1, RRDDIM_INCREMENTAL);
 199                         }
 200                         else rrdset_next(st);
 201
 202                         rrddim_set(st, "receive", rfifo);
 203                         rrddim_set(st, "transmit", tfifo);
 204                         rrdset_done(st);
 205                 }
 206
 207                 // --------------------------------------------------------------------
 208
 209                 if(ddo_compressed) {
 210                         st = rrdset_find_bytype("net_compressed", iface);
 211                         if(!st) {
 212                                 st = rrdset_create("net_compressed", iface, NULL, iface, "net.compressed", "Compressed Packets", "packets/s", 7005, update_every, RRDSET_TYPE_LINE);
 213                                 st->isdetail = 1;
 214
 215                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 216                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 217                         }
 218                         else rrdset_next(st);
 219
 220                         rrddim_set(st, "received", rcompressed);
 221                         rrddim_set(st, "sent", tcompressed);
 222                         rrdset_done(st);
 223                 }
 224
 225                 // --------------------------------------------------------------------
 226
 227                 if(ddo_events) {
 228                         st = rrdset_find_bytype("net_events", iface);
 229                         if(!st) {
 230                                 st = rrdset_create("net_events", iface, NULL, iface, "net.events", "Network Interface Events", "events/s", 7006, update_every, RRDSET_TYPE_LINE);
 231                                 st->isdetail = 1;
 232
 233                                 rrddim_add(st, "frames", NULL, 1, 1, RRDDIM_INCREMENTAL);
 234                                 rrddim_add(st, "collisions", NULL, -1, 1, RRDDIM_INCREMENTAL);
 235                                 rrddim_add(st, "carrier", NULL, -1, 1, RRDDIM_INCREMENTAL);
 236                         }
 237                         else rrdset_next(st);
 238
 239                         rrddim_set(st, "frames", rframe);
 240                         rrddim_set(st, "collisions", tcollisions);
 241                         rrddim_set(st, "carrier", tcarrier);
 242                         rrdset_done(st);
 243                 }
 244         }
 245
 246         return 0;
 247 }