librenms-librenms/html/includes/graphs/device/netstat_tcp.inc.php

<?php

$rrd_filename = rrd_name($device['hostname'], 'netstats-tcp');

$stats = array(
    'tcpInSegs',
    'tcpOutSegs',
    'tcpActiveOpens',
    'tcpPassiveOpens',
    'tcpAttemptFails',
    'tcpEstabResets',
    'tcpRetransSegs',
);

$i = 0;
foreach ($stats as $stat) {
    $i++;
    $rrd_list[$i]['filename'] = $rrd_filename;
    $rrd_list[$i]['descr']    = str_replace('tcp', '', $stat);
    $rrd_list[$i]['ds']       = $stat;
    if (strpos($stat, 'Out') !== false || strpos($stat, 'Retrans') !== false || strpos($stat, 'Attempt') !== false) {
        $rrd_list[$i]['invert'] = true;
    }
}

$colours = 'mixed';

$nototal    = 1;
$simple_rrd = 1;

require 'includes/graphs/generic_multi_line.inc.php';