src/proc_net_snmp.c

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