src/proc_net_dev.c

   1 #include "common.h"
   2
   3 int do_proc_net_dev(int update_every, unsigned long long dt) {
   4         static procfile *ff = NULL;
   5         static int enable_new_interfaces = -1, enable_ifb_interfaces = -1;
   6         static int do_bandwidth = -1, do_packets = -1, do_errors = -1, do_drops = -1, do_fifo = -1, do_compressed = -1, do_events = -1;
   7
   8         if(dt) {};
   9
  10         if(!ff) {
  11                 char filename[FILENAME_MAX + 1];
  12                 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/dev");
  13                 ff = procfile_open(config_get("plugin:proc:/proc/net/dev", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
  14         }
  15         if(!ff) return 1;
  16
  17         ff = procfile_readall(ff);
  18         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  19
  20         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);
  21         if(enable_ifb_interfaces == -1) enable_ifb_interfaces = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "enable ifb interfaces", CONFIG_ONDEMAND_NO);
  22
  23         if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "bandwidth for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  24         if(do_packets == -1)    do_packets              = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "packets for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  25         if(do_errors == -1)             do_errors               = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "errors for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  26         if(do_drops == -1)              do_drops                = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "drops for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  27         if(do_fifo == -1)               do_fifo                 = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "fifo for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  28         if(do_compressed == -1) do_compressed   = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "compressed packets for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
  29         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);
  30
  31         uint32_t lines = procfile_lines(ff), l;
  32         uint32_t words;
  33
  34         char *iface;
  35         unsigned long long rbytes, rpackets, rerrors, rdrops, rfifo, rframe, rcompressed, rmulticast;
  36         unsigned long long tbytes, tpackets, terrors, tdrops, tfifo, tcollisions, tcarrier, tcompressed;
  37
  38         for(l = 2; l < lines ;l++) {
  39                 words = procfile_linewords(ff, l);
  40                 if(words < 17) continue;
  41
  42                 iface           = procfile_lineword(ff, l, 0);
  43
  44                 rbytes          = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  45                 rpackets        = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  46                 rerrors         = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  47                 rdrops          = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  48                 rfifo           = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  49                 rframe          = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  50                 rcompressed     = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  51                 rmulticast      = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  52
  53                 tbytes          = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  54                 tpackets        = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  55                 terrors         = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  56                 tdrops          = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  57                 tfifo           = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
  58                 tcollisions     = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
  59                 tcarrier        = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
  60                 tcompressed     = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
  61
  62                 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;
  63
  64                 int default_enable = enable_new_interfaces;
  65
  66                 // prevent unused interfaces from creating charts
  67                 if(strcmp(iface, "lo") == 0)
  68                         default_enable = 0;
  69                 else {
  70                         int len = strlen(iface);
  71                         if(len >= 4 && strcmp(&iface[len-4], "-ifb") == 0)
  72                                 default_enable = enable_ifb_interfaces;
  73                 }
  74
  75                 // check if the user wants it
  76                 {
  77                         char var_name[512 + 1];
  78                         snprintfz(var_name, 512, "plugin:proc:/proc/net/dev:%s", iface);
  79                         default_enable = config_get_boolean_ondemand(var_name, "enabled", default_enable);
  80                         if(default_enable == CONFIG_ONDEMAND_NO) continue;
  81                         if(default_enable == CONFIG_ONDEMAND_ONDEMAND && !rbytes && !tbytes) continue;
  82
  83                         ddo_bandwidth = config_get_boolean_ondemand(var_name, "bandwidth", ddo_bandwidth);
  84                         ddo_packets = config_get_boolean_ondemand(var_name, "packets", ddo_packets);
  85                         ddo_errors = config_get_boolean_ondemand(var_name, "errors", ddo_errors);
  86                         ddo_drops = config_get_boolean_ondemand(var_name, "drops", ddo_drops);
  87                         ddo_fifo = config_get_boolean_ondemand(var_name, "fifo", ddo_fifo);
  88                         ddo_compressed = config_get_boolean_ondemand(var_name, "compressed", ddo_compressed);
  89                         ddo_events = config_get_boolean_ondemand(var_name, "events", ddo_events);
  90
  91                         if(ddo_bandwidth == CONFIG_ONDEMAND_ONDEMAND && rbytes == 0 && tbytes == 0) ddo_bandwidth = 0;
  92                         if(ddo_errors == CONFIG_ONDEMAND_ONDEMAND && rerrors == 0 && terrors == 0) ddo_errors = 0;
  93                         if(ddo_drops == CONFIG_ONDEMAND_ONDEMAND && rdrops == 0 && tdrops == 0) ddo_drops = 0;
  94                         if(ddo_fifo == CONFIG_ONDEMAND_ONDEMAND && rfifo == 0 && tfifo == 0) ddo_fifo = 0;
  95                         if(ddo_compressed == CONFIG_ONDEMAND_ONDEMAND && rcompressed == 0 && tcompressed == 0) ddo_compressed = 0;
  96                         if(ddo_events == CONFIG_ONDEMAND_ONDEMAND && rframe == 0 && tcollisions == 0 && tcarrier == 0) ddo_events = 0;
  97
  98                         // for absolute values, we need to switch the setting to 'yes'
  99                         // to allow it refresh from now on
 100                         // if(ddo_fifo == CONFIG_ONDEMAND_ONDEMAND) config_set(var_name, "fifo", "yes");
 101                 }
 102
 103                 RRDSET *st;
 104
 105                 // --------------------------------------------------------------------
 106
 107                 if(ddo_bandwidth) {
 108                         st = rrdset_find_bytype("net", iface);
 109                         if(!st) {
 110                                 st = rrdset_create("net", iface, NULL, iface, "net.net", "Bandwidth", "kilobits/s", 7000, update_every, RRDSET_TYPE_AREA);
 111
 112                                 rrddim_add(st, "received", NULL, 8, 1024, RRDDIM_INCREMENTAL);
 113                                 rrddim_add(st, "sent", NULL, -8, 1024, RRDDIM_INCREMENTAL);
 114                         }
 115                         else rrdset_next(st);
 116
 117                         rrddim_set(st, "received", rbytes);
 118                         rrddim_set(st, "sent", tbytes);
 119                         rrdset_done(st);
 120                 }
 121
 122                 // --------------------------------------------------------------------
 123
 124                 if(ddo_packets) {
 125                         st = rrdset_find_bytype("net_packets", iface);
 126                         if(!st) {
 127                                 st = rrdset_create("net_packets", iface, NULL, iface, "net.packets", "Packets", "packets/s", 7001, update_every, RRDSET_TYPE_LINE);
 128                                 st->isdetail = 1;
 129
 130                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 131                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 132                                 rrddim_add(st, "multicast", NULL, 1, 1, RRDDIM_INCREMENTAL);
 133                         }
 134                         else rrdset_next(st);
 135
 136                         rrddim_set(st, "received", rpackets);
 137                         rrddim_set(st, "sent", tpackets);
 138                         rrddim_set(st, "multicast", rmulticast);
 139                         rrdset_done(st);
 140                 }
 141
 142                 // --------------------------------------------------------------------
 143
 144                 if(ddo_errors) {
 145                         st = rrdset_find_bytype("net_errors", iface);
 146                         if(!st) {
 147                                 st = rrdset_create("net_errors", iface, NULL, iface, "net.errors", "Interface Errors", "errors/s", 7002, update_every, RRDSET_TYPE_LINE);
 148                                 st->isdetail = 1;
 149
 150                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 151                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 152                         }
 153                         else rrdset_next(st);
 154
 155                         rrddim_set(st, "inbound", rerrors);
 156                         rrddim_set(st, "outbound", terrors);
 157                         rrdset_done(st);
 158                 }
 159
 160                 // --------------------------------------------------------------------
 161
 162                 if(ddo_drops) {
 163                         st = rrdset_find_bytype("net_drops", iface);
 164                         if(!st) {
 165                                 st = rrdset_create("net_drops", iface, NULL, iface, "net.drops", "Interface Drops", "drops/s", 7003, update_every, RRDSET_TYPE_LINE);
 166                                 st->isdetail = 1;
 167
 168                                 rrddim_add(st, "inbound", NULL, 1, 1, RRDDIM_INCREMENTAL);
 169                                 rrddim_add(st, "outbound", NULL, -1, 1, RRDDIM_INCREMENTAL);
 170                         }
 171                         else rrdset_next(st);
 172
 173                         rrddim_set(st, "inbound", rdrops);
 174                         rrddim_set(st, "outbound", tdrops);
 175                         rrdset_done(st);
 176                 }
 177
 178                 // --------------------------------------------------------------------
 179
 180                 if(ddo_fifo) {
 181                         st = rrdset_find_bytype("net_fifo", iface);
 182                         if(!st) {
 183                                 st = rrdset_create("net_fifo", iface, NULL, iface, "net.fifo", "Interface FIFO Buffer Errors", "errors", 7004, update_every, RRDSET_TYPE_LINE);
 184                                 st->isdetail = 1;
 185
 186                                 rrddim_add(st, "receive", NULL, 1, 1, RRDDIM_INCREMENTAL);
 187                                 rrddim_add(st, "transmit", NULL, -1, 1, RRDDIM_INCREMENTAL);
 188                         }
 189                         else rrdset_next(st);
 190
 191                         rrddim_set(st, "receive", rfifo);
 192                         rrddim_set(st, "transmit", tfifo);
 193                         rrdset_done(st);
 194                 }
 195
 196                 // --------------------------------------------------------------------
 197
 198                 if(ddo_compressed) {
 199                         st = rrdset_find_bytype("net_compressed", iface);
 200                         if(!st) {
 201                                 st = rrdset_create("net_compressed", iface, NULL, iface, "net.compressed", "Compressed Packets", "packets/s", 7005, update_every, RRDSET_TYPE_LINE);
 202                                 st->isdetail = 1;
 203
 204                                 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 205                                 rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 206                         }
 207                         else rrdset_next(st);
 208
 209                         rrddim_set(st, "received", rcompressed);
 210                         rrddim_set(st, "sent", tcompressed);
 211                         rrdset_done(st);
 212                 }
 213
 214                 // --------------------------------------------------------------------
 215
 216                 if(ddo_events) {
 217                         st = rrdset_find_bytype("net_events", iface);
 218                         if(!st) {
 219                                 st = rrdset_create("net_events", iface, NULL, iface, "net.events", "Network Interface Events", "events/s", 7006, update_every, RRDSET_TYPE_LINE);
 220                                 st->isdetail = 1;
 221
 222                                 rrddim_add(st, "frames", NULL, 1, 1, RRDDIM_INCREMENTAL);
 223                                 rrddim_add(st, "collisions", NULL, -1, 1, RRDDIM_INCREMENTAL);
 224                                 rrddim_add(st, "carrier", NULL, -1, 1, RRDDIM_INCREMENTAL);
 225                         }
 226                         else rrdset_next(st);
 227
 228                         rrddim_set(st, "frames", rframe);
 229                         rrddim_set(st, "collisions", tcollisions);
 230                         rrddim_set(st, "carrier", tcarrier);
 231                         rrdset_done(st);
 232                 }
 233         }
 234
 235         return 0;
 236 }