src/proc_net_stat_conntrack.c

   1 #include "common.h"
   2
   3 #define RRD_TYPE_NET_STAT_NETFILTER     "netfilter"
   4 #define RRD_TYPE_NET_STAT_CONNTRACK     "conntrack"
   5
   6 int do_proc_net_stat_conntrack(int update_every, unsigned long long dt) {
   7     (void)dt;
   8
   9     static procfile *ff = NULL;
  10     static int do_sockets = -1, do_new = -1, do_changes = -1, do_expect = -1, do_search = -1, do_errors = -1;
  11
  12     if(unlikely(do_sockets == -1)) {
  13         do_sockets = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connections", 1);
  14         do_new = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter new connections", 1);
  15         do_changes = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection changes", 1);
  16         do_expect = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection expectations", 1);
  17         do_search = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection searches", 1);
  18         do_errors = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter errors", 1);
  19     }
  20
  21     if(unlikely(!ff)) {
  22         char filename[FILENAME_MAX + 1];
  23         snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/stat/nf_conntrack");
  24         ff = procfile_open(config_get("plugin:proc:/proc/net/stat/nf_conntrack", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
  25         if(unlikely(!ff))
  26             return 1;
  27     }
  28
  29     ff = procfile_readall(ff);
  30     if(unlikely(!ff))
  31         return 0; // we return 0, so that we will retry to open it next time
  32
  33     uint32_t lines = procfile_lines(ff), l;
  34
  35     unsigned long long aentries = 0, asearched = 0, afound = 0, anew = 0, ainvalid = 0, aignore = 0, adelete = 0, adelete_list = 0,
  36         ainsert = 0, ainsert_failed = 0, adrop = 0, aearly_drop = 0, aicmp_error = 0, aexpect_new = 0, aexpect_create = 0, aexpect_delete = 0, asearch_restart = 0;
  37
  38     for(l = 1; l < lines ;l++) {
  39         uint32_t words = procfile_linewords(ff, l);
  40         if(unlikely(words < 17)) {
  41             if(unlikely(words)) error("Cannot read /proc/net/stat/nf_conntrack line. Expected 17 params, read %u.", words);
  42             continue;
  43         }
  44
  45         unsigned long long tentries = 0, tsearched = 0, tfound = 0, tnew = 0, tinvalid = 0, tignore = 0, tdelete = 0, tdelete_list = 0, tinsert = 0, tinsert_failed = 0, tdrop = 0, tearly_drop = 0, ticmp_error = 0, texpect_new = 0, texpect_create = 0, texpect_delete = 0, tsearch_restart = 0;
  46
  47         tentries        = strtoull(procfile_lineword(ff, l, 0), NULL, 16);
  48         tsearched       = strtoull(procfile_lineword(ff, l, 1), NULL, 16);
  49         tfound          = strtoull(procfile_lineword(ff, l, 2), NULL, 16);
  50         tnew            = strtoull(procfile_lineword(ff, l, 3), NULL, 16);
  51         tinvalid        = strtoull(procfile_lineword(ff, l, 4), NULL, 16);
  52         tignore         = strtoull(procfile_lineword(ff, l, 5), NULL, 16);
  53         tdelete         = strtoull(procfile_lineword(ff, l, 6), NULL, 16);
  54         tdelete_list    = strtoull(procfile_lineword(ff, l, 7), NULL, 16);
  55         tinsert         = strtoull(procfile_lineword(ff, l, 8), NULL, 16);
  56         tinsert_failed  = strtoull(procfile_lineword(ff, l, 9), NULL, 16);
  57         tdrop           = strtoull(procfile_lineword(ff, l, 10), NULL, 16);
  58         tearly_drop     = strtoull(procfile_lineword(ff, l, 11), NULL, 16);
  59         ticmp_error     = strtoull(procfile_lineword(ff, l, 12), NULL, 16);
  60         texpect_new     = strtoull(procfile_lineword(ff, l, 13), NULL, 16);
  61         texpect_create  = strtoull(procfile_lineword(ff, l, 14), NULL, 16);
  62         texpect_delete  = strtoull(procfile_lineword(ff, l, 15), NULL, 16);
  63         tsearch_restart = strtoull(procfile_lineword(ff, l, 16), NULL, 16);
  64
  65         if(unlikely(!aentries)) aentries =  tentries;
  66
  67         // sum all the cpus together
  68         asearched           += tsearched;       // conntrack.search
  69         afound              += tfound;          // conntrack.search
  70         anew                += tnew;            // conntrack.new
  71         ainvalid            += tinvalid;        // conntrack.new
  72         aignore             += tignore;         // conntrack.new
  73         adelete             += tdelete;         // conntrack.changes
  74         adelete_list        += tdelete_list;    // conntrack.changes
  75         ainsert             += tinsert;         // conntrack.changes
  76         ainsert_failed      += tinsert_failed;  // conntrack.errors
  77         adrop               += tdrop;           // conntrack.errors
  78         aearly_drop         += tearly_drop;     // conntrack.errors
  79         aicmp_error         += ticmp_error;     // conntrack.errors
  80         aexpect_new         += texpect_new;     // conntrack.expect
  81         aexpect_create      += texpect_create;  // conntrack.expect
  82         aexpect_delete      += texpect_delete;  // conntrack.expect
  83         asearch_restart     += tsearch_restart; // conntrack.search
  84     }
  85
  86     RRDSET *st;
  87
  88     // --------------------------------------------------------------------
  89
  90     if(do_sockets) {
  91         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_sockets");
  92         if(unlikely(!st)) {
  93             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_sockets", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker Connections", "active connections", 3000, update_every, RRDSET_TYPE_LINE);
  94
  95             rrddim_add(st, "connections", NULL, 1, 1, RRDDIM_ABSOLUTE);
  96         }
  97         else rrdset_next(st);
  98
  99         rrddim_set(st, "connections", aentries);
 100         rrdset_done(st);
 101     }
 102
 103     // --------------------------------------------------------------------
 104
 105     if(do_new) {
 106         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_new");
 107         if(unlikely(!st)) {
 108             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_new", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker New Connections", "connections/s", 3001, update_every, RRDSET_TYPE_LINE);
 109
 110             rrddim_add(st, "new", NULL, 1, 1, RRDDIM_INCREMENTAL);
 111             rrddim_add(st, "ignore", NULL, -1, 1, RRDDIM_INCREMENTAL);
 112             rrddim_add(st, "invalid", NULL, -1, 1, RRDDIM_INCREMENTAL);
 113         }
 114         else rrdset_next(st);
 115
 116         rrddim_set(st, "new", anew);
 117         rrddim_set(st, "ignore", aignore);
 118         rrddim_set(st, "invalid", ainvalid);
 119         rrdset_done(st);
 120     }
 121
 122     // --------------------------------------------------------------------
 123
 124     if(do_changes) {
 125         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_changes");
 126         if(unlikely(!st)) {
 127             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_changes", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker Changes", "changes/s", 3002, update_every, RRDSET_TYPE_LINE);
 128             st->isdetail = 1;
 129
 130             rrddim_add(st, "inserted", NULL, 1, 1, RRDDIM_INCREMENTAL);
 131             rrddim_add(st, "deleted", NULL, -1, 1, RRDDIM_INCREMENTAL);
 132             rrddim_add(st, "delete_list", NULL, -1, 1, RRDDIM_INCREMENTAL);
 133         }
 134         else rrdset_next(st);
 135
 136         rrddim_set(st, "inserted", ainsert);
 137         rrddim_set(st, "deleted", adelete);
 138         rrddim_set(st, "delete_list", adelete_list);
 139         rrdset_done(st);
 140     }
 141
 142     // --------------------------------------------------------------------
 143
 144     if(do_expect) {
 145         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_expect");
 146         if(unlikely(!st)) {
 147             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_expect", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker Expectations", "expectations/s", 3003, update_every, RRDSET_TYPE_LINE);
 148             st->isdetail = 1;
 149
 150             rrddim_add(st, "created", NULL, 1, 1, RRDDIM_INCREMENTAL);
 151             rrddim_add(st, "deleted", NULL, -1, 1, RRDDIM_INCREMENTAL);
 152             rrddim_add(st, "new", NULL, 1, 1, RRDDIM_INCREMENTAL);
 153         }
 154         else rrdset_next(st);
 155
 156         rrddim_set(st, "created", aexpect_create);
 157         rrddim_set(st, "deleted", aexpect_delete);
 158         rrddim_set(st, "new", aexpect_new);
 159         rrdset_done(st);
 160     }
 161
 162     // --------------------------------------------------------------------
 163
 164     if(do_search) {
 165         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_search");
 166         if(unlikely(!st)) {
 167             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_search", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker Searches", "searches/s", 3010, update_every, RRDSET_TYPE_LINE);
 168             st->isdetail = 1;
 169
 170             rrddim_add(st, "searched", NULL, 1, 1, RRDDIM_INCREMENTAL);
 171             rrddim_add(st, "restarted", NULL, -1, 1, RRDDIM_INCREMENTAL);
 172             rrddim_add(st, "found", NULL, 1, 1, RRDDIM_INCREMENTAL);
 173         }
 174         else rrdset_next(st);
 175
 176         rrddim_set(st, "searched", asearched);
 177         rrddim_set(st, "restarted", asearch_restart);
 178         rrddim_set(st, "found", afound);
 179         rrdset_done(st);
 180     }
 181
 182     // --------------------------------------------------------------------
 183
 184     if(do_errors) {
 185         st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_CONNTRACK "_errors");
 186         if(unlikely(!st)) {
 187             st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_CONNTRACK "_errors", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Connection Tracker Errors", "events/s", 3005, update_every, RRDSET_TYPE_LINE);
 188             st->isdetail = 1;
 189
 190             rrddim_add(st, "icmp_error", NULL, 1, 1, RRDDIM_INCREMENTAL);
 191             rrddim_add(st, "insert_failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
 192             rrddim_add(st, "drop", NULL, -1, 1, RRDDIM_INCREMENTAL);
 193             rrddim_add(st, "early_drop", NULL, -1, 1, RRDDIM_INCREMENTAL);
 194         }
 195         else rrdset_next(st);
 196
 197         rrddim_set(st, "icmp_error", aicmp_error);
 198         rrddim_set(st, "insert_failed", ainsert_failed);
 199         rrddim_set(st, "drop", adrop);
 200         rrddim_set(st, "early_drop", aearly_drop);
 201         rrdset_done(st);
 202     }
 203
 204     return 0;
 205 }