src/proc_net_snmp.c

   1 #include <inttypes.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "common.h"
   7 #include "log.h"
   8 #include "config.h"
   9 #include "procfile.h"
  10 #include "rrd.h"
  11 #include "plugin_proc.h"
  12
  13 #define RRD_TYPE_NET_SNMP                       "ipv4"
  14 #define RRD_TYPE_NET_SNMP_LEN           strlen(RRD_TYPE_NET_SNMP)
  15
  16 int do_proc_net_snmp(int update_every, unsigned long long dt) {
  17         static procfile *ff = NULL;
  18         static int do_ip_packets = -1, do_ip_fragsout = -1, do_ip_fragsin = -1, do_ip_errors = -1,
  19                 do_tcp_sockets = -1, do_tcp_packets = -1, do_tcp_errors = -1, do_tcp_handshake = -1,
  20                 do_udp_packets = -1, do_udp_errors = -1;
  21
  22         if(do_ip_packets == -1)         do_ip_packets           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 packets", 1);
  23         if(do_ip_fragsout == -1)        do_ip_fragsout          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragrments sent", 1);
  24         if(do_ip_fragsin == -1)         do_ip_fragsin           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments assembly", 1);
  25         if(do_ip_errors == -1)          do_ip_errors            = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 errors", 1);
  26         if(do_tcp_sockets == -1)        do_tcp_sockets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP connections", 1);
  27         if(do_tcp_packets == -1)        do_tcp_packets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP packets", 1);
  28         if(do_tcp_errors == -1)         do_tcp_errors           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP errors", 1);
  29         if(do_tcp_handshake == -1)      do_tcp_handshake        = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP handshake issues", 1);
  30         if(do_udp_packets == -1)        do_udp_packets          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP packets", 1);
  31         if(do_udp_errors == -1)         do_udp_errors           = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP errors", 1);
  32
  33         if(dt) {};
  34
  35         if(!ff) ff = procfile_open("/proc/net/snmp", " \t:", PROCFILE_FLAG_DEFAULT);
  36         if(!ff) return 1;
  37
  38         ff = procfile_readall(ff);
  39         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  40
  41         uint32_t lines = procfile_lines(ff), l;
  42         uint32_t words;
  43
  44         RRDSET *st;
  45
  46         for(l = 0; l < lines ;l++) {
  47                 if(strcmp(procfile_lineword(ff, l, 0), "Ip") == 0) {
  48                         l++;
  49
  50                         if(strcmp(procfile_lineword(ff, l, 0), "Ip") != 0) {
  51                                 error("Cannot read Ip line from /proc/net/snmp.");
  52                                 break;
  53                         }
  54
  55                         words = procfile_linewords(ff, l);
  56                         if(words < 20) {
  57                                 error("Cannot read /proc/net/snmp Ip line. Expected 20 params, read %d.", words);
  58                                 continue;
  59                         }
  60
  61                         // see also http://net-snmp.sourceforge.net/docs/mibs/ip.html
  62                         unsigned long long Forwarding, DefaultTTL, InReceives, InHdrErrors, InAddrErrors, ForwDatagrams, InUnknownProtos, InDiscards, InDelivers,
  63                                 OutRequests, OutDiscards, OutNoRoutes, ReasmTimeout, ReasmReqds, ReasmOKs, ReasmFails, FragOKs, FragFails, FragCreates;
  64
  65                         Forwarding              = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  66                         DefaultTTL              = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  67                         InReceives              = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  68                         InHdrErrors             = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  69                         InAddrErrors    = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  70                         ForwDatagrams   = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  71                         InUnknownProtos = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  72                         InDiscards              = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  73                         InDelivers              = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  74                         OutRequests             = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  75                         OutDiscards             = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  76                         OutNoRoutes             = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  77                         ReasmTimeout    = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
  78                         ReasmReqds              = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
  79                         ReasmOKs                = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
  80                         ReasmFails              = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
  81                         FragOKs                 = strtoull(procfile_lineword(ff, l, 17), NULL, 10);
  82                         FragFails               = strtoull(procfile_lineword(ff, l, 18), NULL, 10);
  83                         FragCreates             = strtoull(procfile_lineword(ff, l, 19), NULL, 10);
  84
  85                         // these are not counters
  86                         if(Forwarding) {};              // is forwarding enabled?
  87                         if(DefaultTTL) {};              // the default ttl on packets
  88                         if(ReasmTimeout) {};    // reassemply timeout
  89
  90                         // this counter is not used
  91                         if(InDelivers) {};              // total number of packets delivered to IP user-protcols
  92
  93                         // --------------------------------------------------------------------
  94
  95                         if(do_ip_packets) {
  96                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".packets");
  97                                 if(!st) {
  98                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "packets", NULL, RRD_TYPE_NET_SNMP, "IPv4 Packets", "packets/s", 3000, update_every, RRDSET_TYPE_LINE);
  99
 100                                         rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 101                                         rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 102                                         rrddim_add(st, "forwarded", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 103                                 }
 104                                 else rrdset_next(st);
 105
 106                                 rrddim_set(st, "sent", OutRequests);
 107                                 rrddim_set(st, "received", InReceives);
 108                                 rrddim_set(st, "forwarded", ForwDatagrams);
 109                                 rrdset_done(st);
 110                         }
 111
 112                         // --------------------------------------------------------------------
 113
 114                         if(do_ip_fragsout) {
 115                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsout");
 116                                 if(!st) {
 117                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsout", NULL, RRD_TYPE_NET_SNMP, "IPv4 Fragments Sent", "packets/s", 3010, update_every, RRDSET_TYPE_LINE);
 118                                         st->isdetail = 1;
 119
 120                                         rrddim_add(st, "ok", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 121                                         rrddim_add(st, "failed", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 122                                         rrddim_add(st, "all", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 123                                 }
 124                                 else rrdset_next(st);
 125
 126                                 rrddim_set(st, "ok", FragOKs);
 127                                 rrddim_set(st, "failed", FragFails);
 128                                 rrddim_set(st, "all", FragCreates);
 129                                 rrdset_done(st);
 130                         }
 131
 132                         // --------------------------------------------------------------------
 133
 134                         if(do_ip_fragsin) {
 135                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsin");
 136                                 if(!st) {
 137                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsin", NULL, RRD_TYPE_NET_SNMP, "IPv4 Fragments Reassembly", "packets/s", 3011, update_every, RRDSET_TYPE_LINE);
 138                                         st->isdetail = 1;
 139
 140                                         rrddim_add(st, "ok", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 141                                         rrddim_add(st, "failed", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 142                                         rrddim_add(st, "all", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 143                                 }
 144                                 else rrdset_next(st);
 145
 146                                 rrddim_set(st, "ok", ReasmOKs);
 147                                 rrddim_set(st, "failed", ReasmFails);
 148                                 rrddim_set(st, "all", ReasmReqds);
 149                                 rrdset_done(st);
 150                         }
 151
 152                         // --------------------------------------------------------------------
 153
 154                         if(do_ip_errors) {
 155                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".errors");
 156                                 if(!st) {
 157                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "errors", NULL, RRD_TYPE_NET_SNMP, "IPv4 Errors", "packets/s", 3002, update_every, RRDSET_TYPE_LINE);
 158                                         st->isdetail = 1;
 159
 160                                         rrddim_add(st, "InDiscards", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 161                                         rrddim_add(st, "OutDiscards", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 162
 163                                         rrddim_add(st, "InHdrErrors", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 164                                         rrddim_add(st, "InAddrErrors", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 165                                         rrddim_add(st, "InUnknownProtos", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 166
 167                                         rrddim_add(st, "OutNoRoutes", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 168                                 }
 169                                 else rrdset_next(st);
 170
 171                                 rrddim_set(st, "InDiscards", InDiscards);
 172                                 rrddim_set(st, "OutDiscards", OutDiscards);
 173                                 rrddim_set(st, "InHdrErrors", InHdrErrors);
 174                                 rrddim_set(st, "InAddrErrors", InAddrErrors);
 175                                 rrddim_set(st, "InUnknownProtos", InUnknownProtos);
 176                                 rrddim_set(st, "OutNoRoutes", OutNoRoutes);
 177                                 rrdset_done(st);
 178                         }
 179                 }
 180                 else if(strcmp(procfile_lineword(ff, l, 0), "Tcp") == 0) {
 181                         l++;
 182
 183                         if(strcmp(procfile_lineword(ff, l, 0), "Tcp") != 0) {
 184                                 error("Cannot read Tcp line from /proc/net/snmp.");
 185                                 break;
 186                         }
 187
 188                         words = procfile_linewords(ff, l);
 189                         if(words < 15) {
 190                                 error("Cannot read /proc/net/snmp Tcp line. Expected 15 params, read %d.", words);
 191                                 continue;
 192                         }
 193
 194                         unsigned long long RtoAlgorithm, RtoMin, RtoMax, MaxConn, ActiveOpens, PassiveOpens, AttemptFails, EstabResets,
 195                                 CurrEstab, InSegs, OutSegs, RetransSegs, InErrs, OutRsts;
 196
 197                         RtoAlgorithm    = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
 198                         RtoMin                  = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
 199                         RtoMax                  = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
 200                         MaxConn                 = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
 201                         ActiveOpens             = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
 202                         PassiveOpens    = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
 203                         AttemptFails    = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
 204                         EstabResets             = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
 205                         CurrEstab               = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
 206                         InSegs                  = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
 207                         OutSegs                 = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
 208                         RetransSegs             = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
 209                         InErrs                  = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
 210                         OutRsts                 = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
 211
 212                         // these are not counters
 213                         if(RtoAlgorithm) {};
 214                         if(RtoMin) {};
 215                         if(RtoMax) {};
 216                         if(MaxConn) {};
 217
 218                         // --------------------------------------------------------------------
 219
 220                         // see http://net-snmp.sourceforge.net/docs/mibs/tcp.html
 221                         if(do_tcp_sockets) {
 222                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcpsock");
 223                                 if(!st) {
 224                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcpsock", NULL, "tcp", "IPv4 TCP Connections", "active connections", 2500, update_every, RRDSET_TYPE_LINE);
 225
 226                                         rrddim_add(st, "connections", NULL, 1, 1, RRDDIM_ABSOLUTE);
 227                                 }
 228                                 else rrdset_next(st);
 229
 230                                 rrddim_set(st, "connections", CurrEstab);
 231                                 rrdset_done(st);
 232                         }
 233
 234                         // --------------------------------------------------------------------
 235
 236                         if(do_tcp_packets) {
 237                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcppackets");
 238                                 if(!st) {
 239                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcppackets", NULL, "tcp", "IPv4 TCP Packets", "packets/s", 2600, update_every, RRDSET_TYPE_LINE);
 240
 241                                         rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 242                                         rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 243                                 }
 244                                 else rrdset_next(st);
 245
 246                                 rrddim_set(st, "received", InSegs);
 247                                 rrddim_set(st, "sent", OutSegs);
 248                                 rrdset_done(st);
 249                         }
 250
 251                         // --------------------------------------------------------------------
 252
 253                         if(do_tcp_errors) {
 254                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcperrors");
 255                                 if(!st) {
 256                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcperrors", NULL, "tcp", "IPv4 TCP Errors", "packets/s", 2700, update_every, RRDSET_TYPE_LINE);
 257                                         st->isdetail = 1;
 258
 259                                         rrddim_add(st, "InErrs", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 260                                         rrddim_add(st, "RetransSegs", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 261                                 }
 262                                 else rrdset_next(st);
 263
 264                                 rrddim_set(st, "InErrs", InErrs);
 265                                 rrddim_set(st, "RetransSegs", RetransSegs);
 266                                 rrdset_done(st);
 267                         }
 268
 269                         // --------------------------------------------------------------------
 270
 271                         if(do_tcp_handshake) {
 272                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".tcphandshake");
 273                                 if(!st) {
 274                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "tcphandshake", NULL, "tcp", "IPv4 TCP Handshake Issues", "events/s", 2900, update_every, RRDSET_TYPE_LINE);
 275                                         st->isdetail = 1;
 276
 277                                         rrddim_add(st, "EstabResets", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 278                                         rrddim_add(st, "OutRsts", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 279                                         rrddim_add(st, "ActiveOpens", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 280                                         rrddim_add(st, "PassiveOpens", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 281                                         rrddim_add(st, "AttemptFails", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 282                                 }
 283                                 else rrdset_next(st);
 284
 285                                 rrddim_set(st, "EstabResets", EstabResets);
 286                                 rrddim_set(st, "OutRsts", OutRsts);
 287                                 rrddim_set(st, "ActiveOpens", ActiveOpens);
 288                                 rrddim_set(st, "PassiveOpens", PassiveOpens);
 289                                 rrddim_set(st, "AttemptFails", AttemptFails);
 290                                 rrdset_done(st);
 291                         }
 292                 }
 293                 else if(strcmp(procfile_lineword(ff, l, 0), "Udp") == 0) {
 294                         l++;
 295
 296                         if(strcmp(procfile_lineword(ff, l, 0), "Udp") != 0) {
 297                                 error("Cannot read Udp line from /proc/net/snmp.");
 298                                 break;
 299                         }
 300
 301                         words = procfile_linewords(ff, l);
 302                         if(words < 7) {
 303                                 error("Cannot read /proc/net/snmp Udp line. Expected 7 params, read %d.", words);
 304                                 continue;
 305                         }
 306
 307                         unsigned long long InDatagrams, NoPorts, InErrors, OutDatagrams, RcvbufErrors, SndbufErrors;
 308
 309                         InDatagrams             = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
 310                         NoPorts                 = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
 311                         InErrors                = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
 312                         OutDatagrams    = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
 313                         RcvbufErrors    = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
 314                         SndbufErrors    = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
 315
 316                         // --------------------------------------------------------------------
 317
 318                         // see http://net-snmp.sourceforge.net/docs/mibs/udp.html
 319                         if(do_udp_packets) {
 320                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".udppackets");
 321                                 if(!st) {
 322                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "udppackets", NULL, "udp", "IPv4 UDP Packets", "packets/s", 2601, update_every, RRDSET_TYPE_LINE);
 323
 324                                         rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 325                                         rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 326                                 }
 327                                 else rrdset_next(st);
 328
 329                                 rrddim_set(st, "received", InDatagrams);
 330                                 rrddim_set(st, "sent", OutDatagrams);
 331                                 rrdset_done(st);
 332                         }
 333
 334                         // --------------------------------------------------------------------
 335
 336                         if(do_udp_errors) {
 337                                 st = rrdset_find(RRD_TYPE_NET_SNMP ".udperrors");
 338                                 if(!st) {
 339                                         st = rrdset_create(RRD_TYPE_NET_SNMP, "udperrors", NULL, "udp", "IPv4 UDP Errors", "events/s", 2701, update_every, RRDSET_TYPE_LINE);
 340                                         st->isdetail = 1;
 341
 342                                         rrddim_add(st, "RcvbufErrors", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 343                                         rrddim_add(st, "SndbufErrors", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 344                                         rrddim_add(st, "InErrors", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 345                                         rrddim_add(st, "NoPorts", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 346                                 }
 347                                 else rrdset_next(st);
 348
 349                                 rrddim_set(st, "InErrors", InErrors);
 350                                 rrddim_set(st, "NoPorts", NoPorts);
 351                                 rrddim_set(st, "RcvbufErrors", RcvbufErrors);
 352                                 rrddim_set(st, "SndbufErrors", SndbufErrors);
 353                                 rrdset_done(st);
 354                         }
 355                 }
 356         }
 357
 358         return 0;
 359 }
 360