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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "log.h"
#include "appconfig.h"
#include "procfile.h"
#include "rrd.h"
#include "plugin_proc.h"
#define RRD_TYPE_NET_SNMP "ipv4"
#define RRD_TYPE_NET_SNMP_LEN strlen(RRD_TYPE_NET_SNMP)
int do_proc_net_snmp(int update_every, unsigned long long dt) {
static procfile *ff = NULL;
static int do_ip_packets = -1, do_ip_fragsout = -1, do_ip_fragsin = -1, do_ip_errors = -1,
do_tcp_sockets = -1, do_tcp_packets = -1, do_tcp_errors = -1, do_tcp_handshake = -1,
do_udp_packets = -1, do_udp_errors = -1;
if(do_ip_packets == -1) do_ip_packets = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 packets", 1);
if(do_ip_fragsout == -1) do_ip_fragsout = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragrments sent", 1);
if(do_ip_fragsin == -1) do_ip_fragsin = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments assembly", 1);
if(do_ip_errors == -1) do_ip_errors = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 errors", 1);
if(do_tcp_sockets == -1) do_tcp_sockets = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP connections", 1);
if(do_tcp_packets == -1) do_tcp_packets = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP packets", 1);
if(do_tcp_errors == -1) do_tcp_errors = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP errors", 1);
if(do_tcp_handshake == -1) do_tcp_handshake = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP handshake issues", 1);
if(do_udp_packets == -1) do_udp_packets = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP packets", 1);
if(do_udp_errors == -1) do_udp_errors = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP errors", 1);
if(dt) {};
if(!ff) {
char filename[FILENAME_MAX + 1];
snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/snmp");
ff = procfile_open(config_get("plugin:proc:/proc/net/snmp", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
}
if(!ff) return 1;
ff = procfile_readall(ff);
if(!ff) return 0; // we return 0, so that we will retry to open it next time
uint32_t lines = procfile_lines(ff), l;
uint32_t words;
RRDSET *st;
for(l = 0; l < lines ;l++) {
if(strcmp(procfile_lineword(ff, l, 0), "Ip") == 0) {
l++;
if(strcmp(procfile_lineword(ff, l, 0), "Ip") != 0) {
error("Cannot read Ip line from /proc/net/snmp.");
break;
}
words = procfile_linewords(ff, l);
if(words < 20) {
error("Cannot read /proc/net/snmp Ip line. Expected 20 params, read %d.", words);
continue;
}
// see also http://net-snmp.sourceforge.net/docs/mibs/ip.html
unsigned long long Forwarding, DefaultTTL, InReceives, InHdrErrors, InAddrErrors, ForwDatagrams, InUnknownProtos, InDiscards, InDelivers,
OutRequests, OutDiscards, OutNoRoutes, ReasmTimeout, ReasmReqds, ReasmOKs, ReasmFails, FragOKs, FragFails, FragCreates;
Forwarding = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
DefaultTTL = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
InReceives = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
InHdrErrors = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
InAddrErrors = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
ForwDatagrams = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
InUnknownProtos = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
InDiscards = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
InDelivers = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
OutRequests = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
OutDiscards = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
OutNoRoutes = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
ReasmTimeout = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
ReasmReqds = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
ReasmOKs = strtoull(procfile_lineword(ff, l, 15), NULL, 10);
ReasmFails = strtoull(procfile_lineword(ff, l, 16), NULL, 10);
FragOKs = strtoull(procfile_lineword(ff, l, 17), NULL, 10);
FragFails = strtoull(procfile_lineword(ff, l, 18), NULL, 10);
FragCreates = strtoull(procfile_lineword(ff, l, 19), NULL, 10);
// these are not counters
if(Forwarding) {}; // is forwarding enabled?
if(DefaultTTL) {}; // the default ttl on packets
if(ReasmTimeout) {}; // Reassembly timeout
// this counter is not used
if(InDelivers) {}; // total number of packets delivered to IP user-protocols
// --------------------------------------------------------------------
if(do_ip_packets) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".packets");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "packets", NULL, "packets", NULL, "IPv4 Packets", "packets/s", 3000, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "forwarded", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "sent", OutRequests);
rrddim_set(st, "received", InReceives);
rrddim_set(st, "forwarded", ForwDatagrams);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_ip_fragsout) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsout");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsout", NULL, "fragments", NULL, "IPv4 Fragments Sent", "packets/s", 3010, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "ok", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "all", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "ok", FragOKs);
rrddim_set(st, "failed", FragFails);
rrddim_set(st, "all", FragCreates);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_ip_fragsin) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".fragsin");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "fragsin", NULL, "fragments", NULL, "IPv4 Fragments Reassembly", "packets/s", 3011, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "ok", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "all", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "ok", ReasmOKs);
rrddim_set(st, "failed", ReasmFails);
rrddim_set(st, "all", ReasmReqds);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_ip_errors) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".errors");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "errors", NULL, "errors", NULL, "IPv4 Errors", "packets/s", 3002, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "InDiscards", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "OutDiscards", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "InHdrErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "InAddrErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "InUnknownProtos", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "OutNoRoutes", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "InDiscards", InDiscards);
rrddim_set(st, "OutDiscards", OutDiscards);
rrddim_set(st, "InHdrErrors", InHdrErrors);
rrddim_set(st, "InAddrErrors", InAddrErrors);
rrddim_set(st, "InUnknownProtos", InUnknownProtos);
rrddim_set(st, "OutNoRoutes", OutNoRoutes);
rrdset_done(st);
}
}
else if(strcmp(procfile_lineword(ff, l, 0), "Tcp") == 0) {
l++;
if(strcmp(procfile_lineword(ff, l, 0), "Tcp") != 0) {
error("Cannot read Tcp line from /proc/net/snmp.");
break;
}
words = procfile_linewords(ff, l);
if(words < 15) {
error("Cannot read /proc/net/snmp Tcp line. Expected 15 params, read %d.", words);
continue;
}
unsigned long long RtoAlgorithm, RtoMin, RtoMax, MaxConn, ActiveOpens, PassiveOpens, AttemptFails, EstabResets,
CurrEstab, InSegs, OutSegs, RetransSegs, InErrs, OutRsts;
RtoAlgorithm = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
RtoMin = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
RtoMax = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
MaxConn = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
ActiveOpens = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
PassiveOpens = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
AttemptFails = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
EstabResets = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
CurrEstab = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
InSegs = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
OutSegs = strtoull(procfile_lineword(ff, l, 11), NULL, 10);
RetransSegs = strtoull(procfile_lineword(ff, l, 12), NULL, 10);
InErrs = strtoull(procfile_lineword(ff, l, 13), NULL, 10);
OutRsts = strtoull(procfile_lineword(ff, l, 14), NULL, 10);
// these are not counters
if(RtoAlgorithm) {};
if(RtoMin) {};
if(RtoMax) {};
if(MaxConn) {};
// --------------------------------------------------------------------
// see http://net-snmp.sourceforge.net/docs/mibs/tcp.html
if(do_tcp_sockets) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".tcpsock");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "tcpsock", NULL, "tcp", NULL, "IPv4 TCP Connections", "active connections", 2500, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "connections", NULL, 1, 1, RRDDIM_ABSOLUTE);
}
else rrdset_next(st);
rrddim_set(st, "connections", CurrEstab);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_tcp_packets) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".tcppackets");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "tcppackets", NULL, "tcp", NULL, "IPv4 TCP Packets", "packets/s", 2600, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "received", InSegs);
rrddim_set(st, "sent", OutSegs);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_tcp_errors) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".tcperrors");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "tcperrors", NULL, "tcp", NULL, "IPv4 TCP Errors", "packets/s", 2700, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "InErrs", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "RetransSegs", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "InErrs", InErrs);
rrddim_set(st, "RetransSegs", RetransSegs);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_tcp_handshake) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".tcphandshake");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "tcphandshake", NULL, "tcp", NULL, "IPv4 TCP Handshake Issues", "events/s", 2900, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "EstabResets", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "OutRsts", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "ActiveOpens", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "PassiveOpens", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "AttemptFails", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "EstabResets", EstabResets);
rrddim_set(st, "OutRsts", OutRsts);
rrddim_set(st, "ActiveOpens", ActiveOpens);
rrddim_set(st, "PassiveOpens", PassiveOpens);
rrddim_set(st, "AttemptFails", AttemptFails);
rrdset_done(st);
}
}
else if(strcmp(procfile_lineword(ff, l, 0), "Udp") == 0) {
l++;
if(strcmp(procfile_lineword(ff, l, 0), "Udp") != 0) {
error("Cannot read Udp line from /proc/net/snmp.");
break;
}
words = procfile_linewords(ff, l);
if(words < 7) {
error("Cannot read /proc/net/snmp Udp line. Expected 7 params, read %d.", words);
continue;
}
unsigned long long InDatagrams, NoPorts, InErrors, OutDatagrams, RcvbufErrors, SndbufErrors;
InDatagrams = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
NoPorts = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
InErrors = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
OutDatagrams = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
RcvbufErrors = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
SndbufErrors = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
// --------------------------------------------------------------------
// see http://net-snmp.sourceforge.net/docs/mibs/udp.html
if(do_udp_packets) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".udppackets");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "udppackets", NULL, "udp", NULL, "IPv4 UDP Packets", "packets/s", 2601, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "sent", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "received", InDatagrams);
rrddim_set(st, "sent", OutDatagrams);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_udp_errors) {
st = rrdset_find(RRD_TYPE_NET_SNMP ".udperrors");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_SNMP, "udperrors", NULL, "udp", NULL, "IPv4 UDP Errors", "events/s", 2701, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "RcvbufErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "SndbufErrors", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "InErrors", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "NoPorts", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "InErrors", InErrors);
rrddim_set(st, "NoPorts", NoPorts);
rrddim_set(st, "RcvbufErrors", RcvbufErrors);
rrddim_set(st, "SndbufErrors", SndbufErrors);
rrdset_done(st);
}
}
}
return 0;
}
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