refactor: Cleanup poller include files (#4751)

includes/polling/netstats/netstats-tcp.inc.php

@@ -0,0 +1,50 @@
+<?php
+
+if ($device['os'] != 'Snom') {
+    echo ' TCP';
+
+    $oids = array(
+        'tcpActiveOpens',
+        'tcpPassiveOpens',
+        'tcpAttemptFails',
+        'tcpEstabResets',
+        'tcpCurrEstab',
+        'tcpInSegs',
+        'tcpOutSegs',
+        'tcpRetransSegs',
+        'tcpInErrs',
+        'tcpOutRsts',
+    );
+
+    $rrd_def = array();
+    $snmpstring = '';
+    foreach ($oids as $oid) {
+        $oid_ds      = truncate($oid, 19, '');
+        $rrd_def[]   = " DS:$oid_ds:COUNTER:600:U:10000000"; // Limit to 10MPPS
+        $snmpstring .= ' TCP-MIB::'.$oid.'.0';
+    }
+
+    $snmpstring .= ' tcpHCInSegs.0';
+    $snmpstring .= ' tcpHCOutSegs.0';
+
+    $data = snmp_get_multi($device, $snmpstring, '-OQUs', 'TCP-MIB');
+    $fields = $data[0];
+
+    // use HC Segs if we have them.
+    if (isset($fields['tcpHCInSegs'])) {
+        if (!empty($fields['tcpHCInSegs'])) {
+            $fields['tcpInSegs'] = $fields['tcpHCInSegs'];
+            $fields['tcpOutSegs'] = $fields['tcpHCOutSegs'];
+        }
+        unset($fields['tcpHCInSegs'], $fields['tcpHCOutSegs']);
+    }
+
+    if (isset($fields['tcpInSegs']) && isset($fields['tcpOutSegs'])) {
+        $tags = compact('rrd_def');
+        data_update($device, 'netstats-tcp', $tags, $fields);
+
+        $graphs['netstat_tcp'] = true;
+    }
+
+    unset($oids, $data, $fields, $oid, $protos, $snmpstring);
+}//end if