src/proc_net_snmp.c

   1 #include "common.h"
   2
   3 #define RRD_TYPE_NET_SNMP                       "ipv4"
   4 #define RRD_TYPE_NET_SNMP_LEN           strlen(RRD_TYPE_NET_SNMP)
   5
   6 int do_proc_net_snmp(int update_every, unsigned long long dt) {
   7         static procfile *ff = NULL;
   8         static int do_ip_packets = -1, do_ip_fragsout = -1, do_ip_fragsin = -1, do_ip_errors = -1,
   9                 do_tcp_sockets = -1, do_tcp_packets = -1, do_tcp_errors = -1, do_tcp_handshake = -1,
  10                 do_udp_packets = -1, do_udp_errors = -1;
  11
  12         if(do_ip_packets == -1)         do_ip_packets           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 packets", 1);
  13         if(do_ip_fragsout == -1)        do_ip_fragsout          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments sent", 1);
  14         if(do_ip_fragsin == -1)         do_ip_fragsin           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments assembly", 1);
  15         if(do_ip_errors == -1)          do_ip_errors            = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 errors", 1);
  16         if(do_tcp_sockets == -1)        do_tcp_sockets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP connections", 1);
  17         if(do_tcp_packets == -1)        do_tcp_packets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP packets", 1);
  18         if(do_tcp_errors == -1)         do_tcp_errors           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP errors", 1);
  19         if(do_tcp_handshake == -1)      do_tcp_handshake        = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP handshake issues", 1);
  20         if(do_udp_packets == -1)        do_udp_packets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP packets", 1);
  21         if(do_udp_errors == -1)         do_udp_errors           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP errors", 1);
  22
  23         if(dt) {};
  24
  25         if(!ff) {
  26                 char filename[FILENAME_MAX + 1];
  27                 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/snmp");
  28                 ff = procfile_open(config_get("plugin:proc:/proc/net/snmp", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
  29         }
  30         if(!ff) return 1;
  31
  32         ff = procfile_readall(ff);
  33         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  34
  35         uint32_t lines = procfile_lines(ff), l;
  36         uint32_t words;
  37
  38         RRDSET *st;
  39
  40         for(l = 0; l < lines ;l++) {
  41                 if(strcmp(procfile_lineword(ff, l, 0), "Ip") == 0) {
  42                         l++;
  43
  44                         if(strcmp(procfile_lineword(ff, l, 0), "Ip") != 0) {
  45                                 error("Cannot read Ip line from /proc/net/snmp.");
  46                                 break;
  47                         }
  48
  49                         words = procfile_linewords(ff, l);
  50                         if(words < 20) {
  51                                 error("Cannot read /proc/net/snmp Ip line. Expected 20 params, read %u.", words);
  52                                 continue;
  53                         }
  54
  55                         // see also http://net-snmp.sourceforge.net/docs/mibs/ip.html
  56                         unsigned long long Forwarding, DefaultTTL, InReceives, InHdrErrors, InAddrErrors, ForwDatagrams, InUnknownProtos, InDiscards, InDelivers,
  57                                 OutRequests, OutDiscards, OutNoRoutes, ReasmTimeout, ReasmReqds, ReasmOKs, ReasmFails, FragOKs, FragFails, FragCreates;
  58
  59                         Forwarding              = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  60                         DefaultTTL              = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  61                         InReceives              = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  62                         InHdrErrors             = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  63                         InAddrErrors    = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  64                         ForwDatagrams   = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  65                         InUnknownProtos = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  66                         InDiscards              = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  67                         InDelivers              = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  68                         OutRequests             = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  69                         OutDiscards             = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  70                         OutNoRoutes             = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  71                         ReasmTimeout    = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
  72                         ReasmReqds              = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
  73                         ReasmOKs                = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
  74                         ReasmFails              = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
  75                         FragOKs                 = strtoull(procfile_lineword(ff, l, 17), NULL, 10);
  76                         FragFails               = strtoull(procfile_lineword(ff, l, 18), NULL, 10);
  77                         FragCreates             = strtoull(procfile_lineword(ff, l, 19), NULL, 10);
  78
  79                         // these are not counters
  80                         if(Forwarding) {};              // is forwarding enabled?
  81                         if(DefaultTTL) {};              // the default ttl on packets
  82                         if(ReasmTimeout) {};    // Reassembly timeout
  83
  84                         // this counter is not used
  85                         if(InDelivers) {};              // total number of packets delivered to IP user-protocols
  86
  87                         // --------------------------------------------------------------------
  88
  89                         if(do_ip_packets) {
  90                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".packets");
  91                                 if(!st) {
  92                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "packets", NULL, "packets", NULL, "IPv4 Packets", "packets/s", 3000, update_every, RRDSET_TYPE_LINE);
  93
  94                                         rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
  95                                         rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
  96                                         rrddim_add(st, "forwarded", NULL, 1, 1, RRDDIM_INCREMENTAL);
  97                                 }
  98                                 else rrdset_next(st);
  99
 100                                 rrddim_set(st, "sent", OutRequests);
 101                                 rrddim_set(st, "received", InReceives);
 102                                 rrddim_set(st, "forwarded", ForwDatagrams);
 103                                 rrdset_done(st);
 104                         }
 105
 106                         // --------------------------------------------------------------------
 107
 108                         if(do_ip_fragsout) {
 109                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsout");
 110                                 if(!st) {
 111                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsout", NULL, "fragments", NULL, "IPv4 Fragments Sent", "packets/s", 3010, update_every, RRDSET_TYPE_LINE);
 112                                         st->isdetail = 1;
 113
 114                                         rrddim_add(st, "ok", NULL, 1, 1, RRDDIM_INCREMENTAL);
 115                                         rrddim_add(st, "failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
 116                                         rrddim_add(st, "all", NULL, 1, 1, RRDDIM_INCREMENTAL);
 117                                 }
 118                                 else rrdset_next(st);
 119
 120                                 rrddim_set(st, "ok", FragOKs);
 121                                 rrddim_set(st, "failed", FragFails);
 122                                 rrddim_set(st, "all", FragCreates);
 123                                 rrdset_done(st);
 124                         }
 125
 126                         // --------------------------------------------------------------------
 127
 128                         if(do_ip_fragsin) {
 129                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsin");
 130                                 if(!st) {
 131                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsin", NULL, "fragments", NULL, "IPv4 Fragments Reassembly", "packets/s", 3011, update_every, RRDSET_TYPE_LINE);
 132                                         st->isdetail = 1;
 133
 134                                         rrddim_add(st, "ok", NULL, 1, 1, RRDDIM_INCREMENTAL);
 135                                         rrddim_add(st, "failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
 136                                         rrddim_add(st, "all", NULL, 1, 1, RRDDIM_INCREMENTAL);
 137                                 }
 138                                 else rrdset_next(st);
 139
 140                                 rrddim_set(st, "ok", ReasmOKs);
 141                                 rrddim_set(st, "failed", ReasmFails);
 142                                 rrddim_set(st, "all", ReasmReqds);
 143                                 rrdset_done(st);
 144                         }
 145
 146                         // --------------------------------------------------------------------
 147
 148                         if(do_ip_errors) {
 149                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".errors");
 150                                 if(!st) {
 151                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "errors", NULL, "errors", NULL, "IPv4 Errors", "packets/s", 3002, update_every, RRDSET_TYPE_LINE);
 152                                         st->isdetail = 1;
 153
 154                                         rrddim_add(st, "InDiscards", NULL, 1, 1, RRDDIM_INCREMENTAL);
 155                                         rrddim_add(st, "OutDiscards", NULL, -1, 1, RRDDIM_INCREMENTAL);
 156
 157                                         rrddim_add(st, "InHdrErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
 158                                         rrddim_add(st, "InAddrErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
 159                                         rrddim_add(st, "InUnknownProtos", NULL, 1, 1, RRDDIM_INCREMENTAL);
 160
 161                                         rrddim_add(st, "OutNoRoutes", NULL, -1, 1, RRDDIM_INCREMENTAL);
 162                                 }
 163                                 else rrdset_next(st);
 164
 165                                 rrddim_set(st, "InDiscards", InDiscards);
 166                                 rrddim_set(st, "OutDiscards", OutDiscards);
 167                                 rrddim_set(st, "InHdrErrors", InHdrErrors);
 168                                 rrddim_set(st, "InAddrErrors", InAddrErrors);
 169                                 rrddim_set(st, "InUnknownProtos", InUnknownProtos);
 170                                 rrddim_set(st, "OutNoRoutes", OutNoRoutes);
 171                                 rrdset_done(st);
 172                         }
 173                 }
 174                 else if(strcmp(procfile_lineword(ff, l, 0), "Tcp") == 0) {
 175                         l++;
 176
 177                         if(strcmp(procfile_lineword(ff, l, 0), "Tcp") != 0) {
 178                                 error("Cannot read Tcp line from /proc/net/snmp.");
 179                                 break;
 180                         }
 181
 182                         words = procfile_linewords(ff, l);
 183                         if(words < 15) {
 184                                 error("Cannot read /proc/net/snmp Tcp line. Expected 15 params, read %u.", words);
 185                                 continue;
 186                         }
 187
 188                         unsigned long long RtoAlgorithm, RtoMin, RtoMax, MaxConn, ActiveOpens, PassiveOpens, AttemptFails, EstabResets,
 189                                 CurrEstab, InSegs, OutSegs, RetransSegs, InErrs, OutRsts;
 190
 191                         RtoAlgorithm    = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
 192                         RtoMin                  = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
 193                         RtoMax                  = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
 194                         MaxConn                 = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
 195                         ActiveOpens             = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
 196                         PassiveOpens    = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
 197                         AttemptFails    = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
 198                         EstabResets             = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
 199                         CurrEstab               = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
 200                         InSegs                  = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
 201                         OutSegs                 = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
 202                         RetransSegs             = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
 203                         InErrs                  = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
 204                         OutRsts                 = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
 205
 206                         // these are not counters
 207                         if(RtoAlgorithm) {};
 208                         if(RtoMin) {};
 209                         if(RtoMax) {};
 210                         if(MaxConn) {};
 211
 212                         // --------------------------------------------------------------------
 213
 214                         // see http://net-snmp.sourceforge.net/docs/mibs/tcp.html
 215                         if(do_tcp_sockets) {
 216                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcpsock");
 217                                 if(!st) {
 218                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcpsock", NULL, "tcp", NULL, "IPv4 TCP Connections", "active connections", 2500, update_every, RRDSET_TYPE_LINE);
 219
 220                                         rrddim_add(st, "connections", NULL, 1, 1, RRDDIM_ABSOLUTE);
 221                                 }
 222                                 else rrdset_next(st);
 223
 224                                 rrddim_set(st, "connections", CurrEstab);
 225                                 rrdset_done(st);
 226                         }
 227
 228                         // --------------------------------------------------------------------
 229
 230                         if(do_tcp_packets) {
 231                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcppackets");
 232                                 if(!st) {
 233                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcppackets", NULL, "tcp", NULL, "IPv4 TCP Packets", "packets/s", 2600, update_every, RRDSET_TYPE_LINE);
 234
 235                                         rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 236                                         rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 237                                 }
 238                                 else rrdset_next(st);
 239
 240                                 rrddim_set(st, "received", InSegs);
 241                                 rrddim_set(st, "sent", OutSegs);
 242                                 rrdset_done(st);
 243                         }
 244
 245                         // --------------------------------------------------------------------
 246
 247                         if(do_tcp_errors) {
 248                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcperrors");
 249                                 if(!st) {
 250                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcperrors", NULL, "tcp", NULL, "IPv4 TCP Errors", "packets/s", 2700, update_every, RRDSET_TYPE_LINE);
 251                                         st->isdetail = 1;
 252
 253                                         rrddim_add(st, "InErrs", NULL, 1, 1, RRDDIM_INCREMENTAL);
 254                                         rrddim_add(st, "RetransSegs", NULL, -1, 1, RRDDIM_INCREMENTAL);
 255                                 }
 256                                 else rrdset_next(st);
 257
 258                                 rrddim_set(st, "InErrs", InErrs);
 259                                 rrddim_set(st, "RetransSegs", RetransSegs);
 260                                 rrdset_done(st);
 261                         }
 262
 263                         // --------------------------------------------------------------------
 264
 265                         if(do_tcp_handshake) {
 266                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcphandshake");
 267                                 if(!st) {
 268                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcphandshake", NULL, "tcp", NULL, "IPv4 TCP Handshake Issues", "events/s", 2900, update_every, RRDSET_TYPE_LINE);
 269                                         st->isdetail = 1;
 270
 271                                         rrddim_add(st, "EstabResets", NULL, 1, 1, RRDDIM_INCREMENTAL);
 272                                         rrddim_add(st, "OutRsts", NULL, -1, 1, RRDDIM_INCREMENTAL);
 273                                         rrddim_add(st, "ActiveOpens", NULL, 1, 1, RRDDIM_INCREMENTAL);
 274                                         rrddim_add(st, "PassiveOpens", NULL, 1, 1, RRDDIM_INCREMENTAL);
 275                                         rrddim_add(st, "AttemptFails", NULL, 1, 1, RRDDIM_INCREMENTAL);
 276                                 }
 277                                 else rrdset_next(st);
 278
 279                                 rrddim_set(st, "EstabResets", EstabResets);
 280                                 rrddim_set(st, "OutRsts", OutRsts);
 281                                 rrddim_set(st, "ActiveOpens", ActiveOpens);
 282                                 rrddim_set(st, "PassiveOpens", PassiveOpens);
 283                                 rrddim_set(st, "AttemptFails", AttemptFails);
 284                                 rrdset_done(st);
 285                         }
 286                 }
 287                 else if(strcmp(procfile_lineword(ff, l, 0), "Udp") == 0) {
 288                         l++;
 289
 290                         if(strcmp(procfile_lineword(ff, l, 0), "Udp") != 0) {
 291                                 error("Cannot read Udp line from /proc/net/snmp.");
 292                                 break;
 293                         }
 294
 295                         words = procfile_linewords(ff, l);
 296                         if(words < 7) {
 297                                 error("Cannot read /proc/net/snmp Udp line. Expected 7 params, read %u.", words);
 298                                 continue;
 299                         }
 300
 301                         unsigned long long InDatagrams, NoPorts, InErrors, OutDatagrams, RcvbufErrors, SndbufErrors;
 302
 303                         InDatagrams             = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
 304                         NoPorts                 = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
 305                         InErrors                = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
 306                         OutDatagrams    = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
 307                         RcvbufErrors    = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
 308                         SndbufErrors    = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
 309
 310                         // --------------------------------------------------------------------
 311
 312                         // see http://net-snmp.sourceforge.net/docs/mibs/udp.html
 313                         if(do_udp_packets) {
 314                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".udppackets");
 315                                 if(!st) {
 316                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "udppackets", NULL, "udp", NULL, "IPv4 UDP Packets", "packets/s", 2601, update_every, RRDSET_TYPE_LINE);
 317
 318                                         rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
 319                                         rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
 320                                 }
 321                                 else rrdset_next(st);
 322
 323                                 rrddim_set(st, "received", InDatagrams);
 324                                 rrddim_set(st, "sent", OutDatagrams);
 325                                 rrdset_done(st);
 326                         }
 327
 328                         // --------------------------------------------------------------------
 329
 330                         if(do_udp_errors) {
 331                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".udperrors");
 332                                 if(!st) {
 333                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "udperrors", NULL, "udp", NULL, "IPv4 UDP Errors", "events/s", 2701, update_every, RRDSET_TYPE_LINE);
 334                                         st->isdetail = 1;
 335
 336                                         rrddim_add(st, "RcvbufErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
 337                                         rrddim_add(st, "SndbufErrors", NULL, -1, 1, RRDDIM_INCREMENTAL);
 338                                         rrddim_add(st, "InErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
 339                                         rrddim_add(st, "NoPorts", NULL, 1, 1, RRDDIM_INCREMENTAL);
 340                                 }
 341                                 else rrdset_next(st);
 342
 343                                 rrddim_set(st, "InErrors", InErrors);
 344                                 rrddim_set(st, "NoPorts", NoPorts);
 345                                 rrddim_set(st, "RcvbufErrors", RcvbufErrors);
 346                                 rrddim_set(st, "SndbufErrors", SndbufErrors);
 347                                 rrdset_done(st);
 348                         }
 349                 }
 350         }
 351
 352         return 0;
 353 }
 354