src/proc_net_netstat.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 int do_proc_net_netstat(int update_every, unsigned long long dt) {
  13         static int do_bandwidth = -1, do_inerrors = -1, do_mcast = -1, do_bcast = -1, do_mcast_p = -1, do_bcast_p = -1;
  14         static procfile *ff = NULL;
  15
  16         if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean("plugin:proc:/proc/net/netstat", "bandwidth", 1);
  17         if(do_inerrors == -1)   do_inerrors             = config_get_boolean("plugin:proc:/proc/net/netstat", "input errors", 1);
  18         if(do_mcast == -1)              do_mcast                = config_get_boolean("plugin:proc:/proc/net/netstat", "multicast bandwidth", 1);
  19         if(do_bcast == -1)              do_bcast                = config_get_boolean("plugin:proc:/proc/net/netstat", "broadcast bandwidth", 1);
  20         if(do_mcast_p == -1)    do_mcast_p              = config_get_boolean("plugin:proc:/proc/net/netstat", "multicast packets", 1);
  21         if(do_bcast_p == -1)    do_bcast_p              = config_get_boolean("plugin:proc:/proc/net/netstat", "broadcast packets", 1);
  22
  23         if(dt) {};
  24
  25         if(!ff) ff = procfile_open("/proc/net/netstat", " \t:");
  26         if(!ff) return 1;
  27
  28         ff = procfile_readall(ff);
  29         if(!ff) return 0; // we return 0, so that we will retry to open it next time
  30
  31         uint32_t lines = procfile_lines(ff), l;
  32         uint32_t words;
  33
  34         for(l = 0; l < lines ;l++) {
  35                 if(strcmp(procfile_lineword(ff, l, 0), "IpExt") == 0) {
  36                         l++; // we need the next line
  37
  38                         if(strcmp(procfile_lineword(ff, l, 0), "IpExt") != 0) {
  39                                 error("Cannot read IpExt line from /proc/net/netstat.");
  40                                 break;
  41                         }
  42                         words = procfile_linewords(ff, l);
  43                         if(words < 12) {
  44                                 error("Cannot read /proc/net/netstat IpExt line. Expected 12 params, read %d.", words);
  45                                 continue;
  46                         }
  47
  48                         unsigned long long
  49                                 InNoRoutes = 0, InTruncatedPkts = 0,
  50                                 InOctets = 0,  InMcastPkts = 0,  InBcastPkts = 0,  InMcastOctets = 0,  InBcastOctets = 0,
  51                                 OutOctets = 0, OutMcastPkts = 0, OutBcastPkts = 0, OutMcastOctets = 0, OutBcastOctets = 0;
  52
  53                         InNoRoutes                      = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
  54                         InTruncatedPkts         = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
  55                         InMcastPkts             = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
  56                         OutMcastPkts            = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
  57                         InBcastPkts             = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
  58                         OutBcastPkts            = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
  59                         InOctets                        = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
  60                         OutOctets                       = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
  61                         InMcastOctets           = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
  62                         OutMcastOctets          = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
  63                         InBcastOctets           = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
  64                         OutBcastOctets          = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
  65
  66                         RRDSET *st;
  67
  68                         // --------------------------------------------------------------------
  69
  70                         if(do_bandwidth) {
  71                                 st = rrdset_find("system.ipv4");
  72                                 if(!st) {
  73                                         st = rrdset_create("system", "ipv4", NULL, "ipv4", "IPv4 Bandwidth", "kilobits/s", 2000, update_every, RRDSET_TYPE_AREA);
  74
  75                                         rrddim_add(st, "received", NULL, 8, 1024 * update_every, RRDDIM_INCREMENTAL);
  76                                         rrddim_add(st, "sent", NULL, -8, 1024 * update_every, RRDDIM_INCREMENTAL);
  77                                 }
  78                                 else rrdset_next(st);
  79
  80                                 rrddim_set(st, "sent", OutOctets);
  81                                 rrddim_set(st, "received", InOctets);
  82                                 rrdset_done(st);
  83                         }
  84
  85                         // --------------------------------------------------------------------
  86
  87                         if(do_inerrors) {
  88                                 st = rrdset_find("ipv4.inerrors");
  89                                 if(!st) {
  90                                         st = rrdset_create("ipv4", "inerrors", NULL, "ipv4", "IPv4 Input Errors", "packets/s", 4000, update_every, RRDSET_TYPE_LINE);
  91                                         st->isdetail = 1;
  92
  93                                         rrddim_add(st, "noroutes", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
  94                                         rrddim_add(st, "trunkated", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
  95                                 }
  96                                 else rrdset_next(st);
  97
  98                                 rrddim_set(st, "noroutes", InNoRoutes);
  99                                 rrddim_set(st, "trunkated", InTruncatedPkts);
 100                                 rrdset_done(st);
 101                         }
 102
 103                         // --------------------------------------------------------------------
 104
 105                         if(do_mcast) {
 106                                 st = rrdset_find("ipv4.mcast");
 107                                 if(!st) {
 108                                         st = rrdset_create("ipv4", "mcast", NULL, "ipv4", "IPv4 Multicast Bandwidth", "kilobits/s", 9000, update_every, RRDSET_TYPE_AREA);
 109                                         st->isdetail = 1;
 110
 111                                         rrddim_add(st, "received", NULL, 8, 1024 * update_every, RRDDIM_INCREMENTAL);
 112                                         rrddim_add(st, "sent", NULL, -8, 1024 * update_every, RRDDIM_INCREMENTAL);
 113                                 }
 114                                 else rrdset_next(st);
 115
 116                                 rrddim_set(st, "sent", OutMcastOctets);
 117                                 rrddim_set(st, "received", InMcastOctets);
 118                                 rrdset_done(st);
 119                         }
 120
 121                         // --------------------------------------------------------------------
 122
 123                         if(do_bcast) {
 124                                 st = rrdset_find("ipv4.bcast");
 125                                 if(!st) {
 126                                         st = rrdset_create("ipv4", "bcast", NULL, "ipv4", "IPv4 Broadcast Bandwidth", "kilobits/s", 8000, update_every, RRDSET_TYPE_AREA);
 127                                         st->isdetail = 1;
 128
 129                                         rrddim_add(st, "received", NULL, 8, 1024 * update_every, RRDDIM_INCREMENTAL);
 130                                         rrddim_add(st, "sent", NULL, -8, 1024 * update_every, RRDDIM_INCREMENTAL);
 131                                 }
 132                                 else rrdset_next(st);
 133
 134                                 rrddim_set(st, "sent", OutBcastOctets);
 135                                 rrddim_set(st, "received", InBcastOctets);
 136                                 rrdset_done(st);
 137                         }
 138
 139                         // --------------------------------------------------------------------
 140
 141                         if(do_mcast_p) {
 142                                 st = rrdset_find("ipv4.mcastpkts");
 143                                 if(!st) {
 144                                         st = rrdset_create("ipv4", "mcastpkts", NULL, "ipv4", "IPv4 Multicast Packets", "packets/s", 9500, update_every, RRDSET_TYPE_LINE);
 145                                         st->isdetail = 1;
 146
 147                                         rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 148                                         rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 149                                 }
 150                                 else rrdset_next(st);
 151
 152                                 rrddim_set(st, "sent", OutMcastPkts);
 153                                 rrddim_set(st, "received", InMcastPkts);
 154                                 rrdset_done(st);
 155                         }
 156
 157                         // --------------------------------------------------------------------
 158
 159                         if(do_bcast_p) {
 160                                 st = rrdset_find("ipv4.bcastpkts");
 161                                 if(!st) {
 162                                         st = rrdset_create("ipv4", "bcastpkts", NULL, "ipv4", "IPv4 Broadcast Packets", "packets/s", 8500, update_every, RRDSET_TYPE_LINE);
 163                                         st->isdetail = 1;
 164
 165                                         rrddim_add(st, "received", NULL, 1, 1 * update_every, RRDDIM_INCREMENTAL);
 166                                         rrddim_add(st, "sent", NULL, -1, 1 * update_every, RRDDIM_INCREMENTAL);
 167                                 }
 168                                 else rrdset_next(st);
 169
 170                                 rrddim_set(st, "sent", OutBcastPkts);
 171                                 rrddim_set(st, "received", InBcastPkts);
 172                                 rrdset_done(st);
 173                         }
 174                 }
 175         }
 176
 177         return 0;
 178 }