#!@@PERL@@
# -*- perl -*-
#
# netstat_multi - Munin plugin for detailed Network statistics
# Copyright (C) 2011 Redpill Linpro AS
#
# Author: Trygve Vea <tv@redpill-linpro.com>
# Author: Ørjan Ommundsen <orjan@redpill-linpro.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

=head1 NAME

netstat_multi - Munin plugin to monitor verbose Network statistics

=head1 APPLICABLE SYSTEMS

Works on any Linux-system with /proc/net/snmp and /proc/net/netstat.

=head1 CONFIGURATION

No configuration needed.

=head1 INTERPRETATION

Each graph uses data from the proc filesystem.

=head1 MAGIC MARKERS

 #%# family=contrib
 #%# capabilities=autoconf multigraph

=head1 PATCHES-TO

The munin-project.

=head1 AUTHOR

Trygve Vea <tv@redpill-linpro.com>
Ørjan Ommundsen <orjan@redpill-linpro.com>

=head1 LICENSE

GPLv2

=cut


use strict;
use warnings;
use Munin::Plugin;

need_multigraph();

my %sets = ();
my %datas = ();
my $key;
my @columns;

my @statfiles = ('/proc/net/netstat','/proc/net/snmp');
my @graph_parameters = ('title','total','order','scale','vlabel','args', 'category');
my @field_parameters = ('graph', 'min', 'max', 'draw', 'cdef', 'warning', 'colour', 'info', 'type', 'negative');

my %aspects = (
    'TCPSynCookies' => {
        'title' => 'TCP Syncookies',
        'category' => 'Network',
        'vlabel' => 'packets in (-) / out (+) per second',
        'min' => 0,
        'values' => {
            'TcpExt_SyncookiesSent' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'SYN cookies',
                'min' => 0,
                'negative' => 'TcpExt_SyncookiesRecv'
            },
            'TcpExt_SyncookiesRecv' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'graph' => 'no'
            },
            'TcpExt_SyncookiesFailed' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'Invalid SYN cookies received',
                'min' => 0,
                'info' => 'Invalid SYN cookies received'
            },
	    # v3.1 (946cedccbd)
            # 'TcpExt_TCPReqQFullDoCookies' => {
            #     'type' => 'DERIVE',
            #     'draw' => 'LINE1',
            #     'label' => 'Syncookies replies to client',
            #     'min' => 0,
            # },
	    # v3.1 (946cedccbd)
            'TcpExt_TCPReqQFullDrop' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'Dropped syncookies requests',
                'min' => 0,
                'info' => 'number of times a SYN request was dropped because syncookies were not enabled'
            }
        }
    },
    'TCPSockets' => {
        'title' => 'TCP Sockets',
        'category' => 'Network',
        'vlabel' => 'events per second',
        'width' => 600,
        'values' => {
            'Tcp_ActiveOpens' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Active connection openings',
            },
            'Tcp_PassiveOpens' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Passive connection openings',
            },
            'Tcp_EstabResets' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Connection resets received',
            },
            'Tcp_AttemptFails' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Failed connection attempts',
            }
        }
    },

    'TCPSegments' => {
        'title' => 'TCP Segments',
        'category' => 'Network',
        'vlabel' => 'segments in (-) / out (+) per second',
        'width' => 600,
        'values' => {
            'Tcp_InSegs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Segments received',
                'graph' => 'no',
            },
            'Tcp_OutSegs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'Segments',
                'min' => 0,
                'negative' => 'Tcp_InSegs'
            },
            'Tcp_RetransSegs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'Segments retransmitted',
                'min' => 0,
            },
            'Tcp_InErrs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'label' => 'Bad segments received',
                'min' => 0,
            },
        }
    },
    'TCPCurrConn' => {
        'title' => 'TCP Open Connections',
        'category' => 'Network',
        'vlabel' => 'number of connections',
        'width' => 600,
        'values' => {
            'Tcp_CurrEstab' => {
                'type' => 'GAUGE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Active TCP connections',
                'info' => 'Currently active TCP connections',
            }
        }
    },
    'TCPTimeouts' => {
        'title' => 'TCP other timeouts',
        'category' => 'Network',
        'vlabel' => 'timeouts per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPTimeouts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Other timeouts',
                'info' => 'TCP other (unspecified) timeouts',
            }
        }
    },
    'TCPDatalossEvents' => {
        'title' => 'TCP data loss events',
        'category' => 'Network',
        'vlabel' => 'events per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPLoss' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Data loss events',
                'info' => 'TCP data loss events',
            },
            'TcpExt_TCPLostRetransmit' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Retransmits lost',
                'info' => 'TCP retransmits lost',
            }
        }
    },
    'SOCKBUFERR' => {
        'title' => 'TCP socket buffer errors',
        'category' => 'Network',
        'vlabel' => 'errors per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPRcvCollapsed' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Receives collapsed',
                'info' => 'Packets collapsed in receive queue due to low socket buffer',
            },
            'TcpExt_PruneCalled' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Prunes in recv_queue',
                'info' => 'Packets pruned from receive queue because of socket buffer overrun',
            },
            'TcpExt_ListenOverflows' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Listen overflows',
                'info' => 'Times the listen queue of a socket overflowed',
            },
            'TcpExt_ListenDrops' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SYNs ignored',
                'info' => 'SYNs to LISTEN sockets ignored',
            },
            'TcpExt_TCPSchedulerFailed' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Scheduler failures',
                'info' => 'Receiver schedulations too late for direct processing',
            },
            'TcpExt_EmbryonicRsts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Embryonic resets',
                'info' => 'Resets received for embryonic SYN_RECV sockets',
            },
	    # < 2.6.12
            'TcpExt_RcvPruned' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Receives pruned'
            }
        }
    },
    'TCPReorder' => {
        'title' => 'TCP SACK/FACK reorders',
        'category' => 'Network',
        'vlabel' => 'reorders per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPFACKReorder' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'FACK reorder',
                'info' => 'Reordering using FACK',
            },
            'TcpExt_TCPSACKReorder' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SACK reorder',
                'info' => 'Reordering using SACK',
            },
            'TcpExt_TCPRenoReorder' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reno reorder',
                'info' => 'Reordering using Reno',
            },
            'TcpExt_TCPTSReorder' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Timestamp reorder',
                'info' => 'Reordering using timestamps',
            },
	    # v3.6 (a6df1ae9)
            'TcpExt_TCPOFOQueue' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'OFO queue',
                'info' => 'Number of packets queued in OFO queue',
            },
	    # v3.6 (a6df1ae9)
            'TcpExt_TCPOFODrop' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'OFO drop',
                'info' => 'packets meant to be queued in OFO but dropped because socket rcvbuf limit hit',
            },
	    # v3.6 (a6df1ae9)
            'TcpExt_TCPOFOMerge' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'OFO packets merged',
                'info' => 'OFO packets merged with other packets',
            },
	    # < 2.6.12
            'TcpExt_OfoPruned' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'OFO packets pruned',
                'info' => '',
            }

        }
    },
    'TCPSACKFACK' => {
        'title' => 'TCP Selective ACK / Forward ACK',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPSackRecovery' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SACK recovery',
                'info' => 'Recovered from packet loss due to SACK data',
            },
            'TcpExt_TCPSACKReneging' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SACK renegotiations',
                'info' => 'Renegotiations after bad SACKs received',
            },
            'TcpExt_TCPSackFailures' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SACK failures',
                'info' => 'Timeouts after SACK recovery',
            },
            'TcpExt_TCPSackRecoveryFail' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SACK retransmit failures',
                'info' => 'SACK retransmit failures',
            }
        }
    },
    'TCPDSACK' => {
        'title' => 'TCP Duplicate Selective ACKs',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPDSACKOldSent' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'DSACK old sent',
                'info' => 'DSACKs sent for old packets',
            },
            'TcpExt_TCPDSACKOfoRecv' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'DSACKS for Ofo received',
                'info' => 'DSACKS received for Out of order packets',
            },
            'TcpExt_TCPDSACKRecv' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'DSACKs received',
                'info' => 'DSACKs received',
            },
            'TcpExt_TCPDSACKOfoSent' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'DSACKs for Ofo sent',
                'info' => 'DSACKs sent for Out of order packets',
            },
            'TcpExt_TCPDSACKUndo' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'DSACK undos',
            }
        }
    },
    'TCPAborted' => {
        'title' => 'TCP aborted connections',
        'category' => 'Network',
        'vlabel' => 'connections per second',
        'width' => 600,
        'values' => {
	    # v3.6 (0c24604b)
            'TcpExt_TCPSYNChallenge' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'RFC 5691 challenge ACK',
            },
            'TcpExt_TCPAbortOnData' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort on data',
                'info' => 'Connections reset due to unexpected data',
            },
            'TcpExt_TCPAbortOnClose' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort on close',
                'info' => 'Connections reset due to early user close',
            },
            'TcpExt_TCPAbortOnMemory' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort on memory',
            },
            'TcpExt_TCPAbortOnTimeout' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort on timeout',
                'info' => 'Connections aborted due to timeout',
            },
            'TcpExt_TCPAbortOnLinger' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort on linger',
            },
            'TcpExt_TCPAbortFailed' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Abort failure',
            },
            'TcpExt_TCPMemoryPressures' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Memory pressures',
            }
        }
    },
    'TCPDelayedACK' => {
        'title' => 'TCP delayed ACKs',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_DelayedACKs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Delayed ACKs',
                'info' => 'Delayed ACKs sent',
            },
            'TcpExt_DelayedACKLocked' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Delayed ACKs locked',
                'info' => 'Delayed ACKs further delayed because of locked socket',
            },
            'TcpExt_DelayedACKLost' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Delayed ACKs lost',
            }
        }
    },
    'TCPRetrans' => {
        'title' => 'TCP retransmissions',
        'category' => 'Network',
        'vlabel' => 'events per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPFastRetrans' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fast retransmissions',
            },
            'TcpExt_TCPForwardRetrans' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Forward retransmissions',
            },
            'TcpExt_TCPSlowStartRetrans' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Slow Start retransmissions',
            },
            'TcpExt_TCPLossFailures' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Timeouts in loss state',
            },
	    # v3.4 (09e9b813)
            'TcpExt_TCPRetransFail' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'failed tcp_retransmit_skb()',
            },
	    # v3.6 (783237e8)
            # 'TcpExt_TCPFastOpenActive' => {
            #     'type' => 'DERIVE',
            #     'draw' => 'LINE1',
            #     'min' => 0,
            #     'label' => 'Number of active Fast Open (SYN/data)',
            # },
	    # v3.7 (104671636)
            # 'TcpExt_TCPFastOpenPasive' => {
            #     'type' => 'DERIVE',
            #     'draw' => 'LINE1',
            #     'min' => 0,
            #     'label' => 'Number of passive Fast Open (SYN/data)',
            # },
	    # v3.7 (1046716)
            'TcpExt_TCPFastOpenPassiveFail' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fast Open received (SYN/data) passive failed',
                'info' => 'Number of failed passive Fast Open (SYN/data)',
            },
	    # v3.10 (6ba8a3b19)
            # 'TcpExt_TCPLossProbes' => {
            #     'type' => 'DERIVE',
            #     'draw' => 'LINE1',
            #     'min' => 0,
            #     'label' => 'Total tail loss probes',
            #     'info' => 'Total tail loss probes',
            # },
	    # v3.10 (9b717a8d)
            'TcpExt_TCPLossProbeRecovery' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Necesary tail loss probes'
            },
	    # v3.15 (f19c29e3e)
            'TcpExt_TCPSynRetrans' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'SYN and SYN/ACK retransmits',
                'info' => 'Number of SYN and SYN/ACK retransmits to break down retransmissions into SYN, fast-retransmits, timeout retransmits, etc',
            },
	    # v3.15 (f19c29e3e)
            'TcpExt_TCPFastOpenActiveFail' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fast Open attempts (SYN/data) failed',
                'info' => 'Fast Open attempts (SYN/data) failed because the remote does not accept it or the attempts timed out',
            },
	    # v3.15 (f19c29e3e)
            # 'TcpExt_TCPOrigDataSent' => {
            #     'type' => 'DERIVE',
            #     'draw' => 'LINE1',
            #     'min' => 0,
            #     'label' => 'outgoing packets with original data'
            # }
        }
    },
    'TCPPAWS' => {
        'title' => 'PAWS (Protect against wrapped sequence numbers)',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_PAWSPassive' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Active',
            },
            'TcpExt_PAWSActive' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Passive',
            },
            'TcpExt_PAWSEstab' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Established',
            }
        }
    },
    'IPReassembly' => {
        'title' => 'IP packet reassembly',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'Ip_ReasmTimeout' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reassembly timeouts',
                'info' => 'IP packet fragments dropped after timeout',
            },
            'Ip_ReasmReqds' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reassemblies required',
                'info' => 'IP packet reassemblies required',
            },
            'Ip_ReasmOKs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reassembly successes',
                'info' => 'IP packet reassemblies succeeded',
            },
            'Ip_ReasmFails' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reassembly failures',
                'info' => 'IP packet reassemblies failed',
            },
            'Ip_FragFails' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fragments failed',
                'info' => 'IP packet fragments failed',
            }
        }
    },
    'TCPTimeWait' => {
        'title' => 'TCP Time-Wait',
        'category' => 'Network',
        'vlabel' => 'connections per second',
        'width' => 600,
        'values' => {
            'TcpExt_TW' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'TimeWait',
            },
            'TcpExt_TWRecycled' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'TimeWait Recycled',
            },
            'TcpExt_TWKilled' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'TimeWait killed',
            }
        }
    },
    'UDPDatagrams' => {
        'title' => 'UDP datagrams',
        'category' => 'Network',
        'vlabel' => 'datagrams per second',
        'width' => 600,
        'values' => {
            'Udp_InDatagrams' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Incoming datagrams',
                'info' => 'UDP packets received',
            },
            'Udp_NoPorts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Unknown ports',
                'info' => 'Packets to unknown port received',
            },
            'Udp_InErrors' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Incoming errors',
                'info' => 'UDP incoming packet errors',
            },
            'Udp_OutDatagrams' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Outgoing datagrams',
                'info' => 'UDP packets sent',
            }
        }
    },
    'TCPQueueing' => {
        'title' => 'TCP Queueing',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPPrequeued' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Prequeued',
                'info' => 'Packets directly queued to recvmsg prequeue',
            },
            'TcpExt_TCPDirectCopyFromBacklog' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Direct copy from backlog',
                'info' => 'Packets directly received from backlog',
            },
	    # v2.6.34 (6cce09f87)
            'TcpExt_TCPBacklogDrop' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Dropped from backlog',
                'info' => 'Packets dropped due to backlog queue being full',
            },
	    # v2.6.34 (6cce09f87)
            'TcpExt_TCPMinTTLDrop' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Dropped due to TTL being too short',
                'info' => 'RFC 5082 minimum TTL restriction',
            },
            'TcpExt_TCPDirectCopyFromPrequeue' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Direct copy from prequeue',
                'info' => 'Packets directly received from prequeue',
            },
            'TcpExt_TCPPrequeueDropped' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Prequeue items dropped',
                'info' => 'Prequeue items dropped',
            }
        }
    },
    'TCPHP' => {
        'title' => 'TCP Packet headers predicted',
        'category' => 'Network',
        'vlabel' => 'packets per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPHPHits' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Headers predicted',
                'info' => 'TCP packets header predicted',
            },
            'TcpExt_TCPHPHitsToUser' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Headers predicted to user',
                'info' => 'Packets header predicted and directly queued to user',
            },
            'TcpExt_TCPPureAcks' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Pure ACKs received',
                'info' => 'Acknowledgments not containing data received',
            },
            'TcpExt_TCPHPAcks' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Predicted ACKs',
                'info' => 'Predicted acknowledgments',
            }
        }
    },
    'IPEXT' => {
        'title' => 'IP packet types',
        'category' => 'Network',
        'vlabel' => 'packets in (-) / out (+) per second',
        'width' => 600,
        'values' => {
            'IpExt_InNoRoutes' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'No route',
            },
            'IpExt_InTruncatedPkts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Incoming truncated packets',
            },
            'IpExt_InMcastPkts' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'IpExt_OutMcastPkts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Multicast packets',
                'negative' => 'IpExt_InMcastPkts'
            },
            'IpExt_InBcastPkts' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'IpExt_OutBcastPkts' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Broadcast packets',
                'negative' => 'IpExt_InBcastPkts'
            }

        }
    },
    'TCPReno' => {
        'title' => 'TCP Congestion avoidance algorithm (Reno)',
        'category' => 'Network',
        'vlabel' => 'events per second',
        'width' => 600,
        'values' => {
            'TcpExt_TCPRenoReorder' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Reorder successes',
                'info' => 'Reno packet window reordering successful',
            },
            'TcpExt_TCPRenoFailures' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fast retransmit failures',
                'info' => 'Timeouts after reno fast retransmit',
            },
            'TcpExt_TCPRenoRecovery' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Fast Retransmit successes',
                'info' => 'Reno recoveries from packet loss due to fast retransmit',
            },
            'TcpExt_TCPRenoRecoveryFail' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Recovery failures',
                'info' => 'Reno fast recovery failure',
            },
            'TcpExt_TCPFullUndo' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Full recoveries',
                'info' => 'Congestion windows fully recovered',
            },
            'TcpExt_TCPPartialUndo' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Partial recoveries',
                'info' => 'Congestion windows partially recovered using Hoe heuristic',
            },
            'TcpExt_TCPLossUndo' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Partial ACK recoveries',
                'info' => 'Congestion windows recovered after partial ack',
            }
        }
    },
    'ICMP' => {
        'title' => 'ICMP',
        'category' => 'Network',
        'vlabel' => 'packets in (-) / out (+) per second',
        'width' => 600,
        'values' => {
            'Icmp_InDestUnreachs' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutDestUnreachs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Unreachables',
                'info' => 'ICMP Destination Unreachables',
                'negative' => 'Icmp_InDestUnreachs'
            },
            'Icmp_InEchoReps' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutEchoReps' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Echo Replies',
                'info' => 'ICMP Echo Replies',
                'negative' => 'Icmp_InEchoReps'
            },
            'Icmp_InEchos' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutEchos' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Echos',
                'info' => 'ICMP Echos',
                'negative' => 'Icmp_InEchos'
            },
            'Icmp_InRedirects' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutRedirects' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Redirects',
                'info' => 'ICMP Redirects',
                'negative' => 'Icmp_InRedirects'
            },
            'Icmp_InTimeExcds' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutTimeExcds' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Time exceededs',
                'info' => 'ICMP Time Exceeded',
                'negative' => 'Icmp_InTimeExcds'
            },
            'Icmp_InParmProbs' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutParmProbs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Parameter Problems',
                'negative' => 'Icmp_InParmProbs'
            },
            'Icmp_InSrcQuenchs' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutSrcQuenchs' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Source Quenches',
                'negative' => 'Icmp_InSrcQuenchs'
            },
            'Icmp_InAddrMaskReps' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutAddrMaskReps' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Address Mask replies',
                'negative' => 'Icmp_InAddrMaskReps'
            },
            'Icmp_InAddrMasks' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutAddrMasks' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Address Mask requests',
                'negative' => 'Icmp_InAddrMasks'
            },
            'Icmp_InTimestampReps' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutTimestampReps' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Timestamp Replies',
                'negative' => 'Icmp_InTimestampReps'
            },
            'Icmp_InTimestamps' => {
                'type' => 'DERIVE',
                'min' => 0,
                'graph' => 'no'
            },
            'Icmp_OutTimestamps' => {
                'type' => 'DERIVE',
                'draw' => 'LINE1',
                'min' => 0,
                'label' => 'Timestamps',
                'negative' => 'Icmp_InTimestamps'
            }
        }
    }
);


foreach (@statfiles) {
    open F, $_;
    while(<F>)
    {
        chomp($_);
        my @line = split(/ /,$_);
        $line[0] =~ s/\://;
        if ( !$sets{$line[0]} ) {
            $sets{$line[0]} = 1;
            @columns = @line;
            next;
        }
        for (my $i = 1; $i < @line; $i++) {
            if ( length($columns[$i]) > 0 ) {
                $datas{"$columns[0]_$columns[$i]"} = $line[$i];
            }
        }
    }
    close F;
}

foreach $key (sort keys %aspects) {
    my $val;
    unless ( defined($ARGV[0]) and $ARGV[0] eq 'autoconf' ) { print "multigraph $key\n"; }
    if ( defined($ARGV[0]) and $ARGV[0] eq 'config' ) {
        foreach (@graph_parameters) {
            if (!defined($aspects{$key}{$_})) {
                next;
            }
            print "graph_$_ $aspects{$key}{$_}\n";
        }
        print "\n";
        foreach $val (sort keys %{$aspects{$key}{'values'}}) {
            if (defined($aspects{$key}{'values'}{$val}{'label'})) {
                print "$val.label $aspects{$key}{'values'}{$val}{'label'}\n";
            } else {
                print "$val.label $val\n";
            }
            if (!defined($datas{$val})) {
                next;
            }
            foreach (@field_parameters) {
                if (!defined($aspects{$key}{'values'}{$val}{$_})) {
                    next;
                }
                print "$val.$_ $aspects{$key}{'values'}{$val}{$_}\n";
            }
        }
        print "\n";
    }
    elsif ( defined($ARGV[0]) and $ARGV[0] eq 'debug' ) {
        foreach $key (sort keys %datas) {
            print "$key = $datas{$key}\n";
        }
    }
    elsif ( defined($ARGV[0]) and $ARGV[0] eq 'autoconf' ) {
        print "no (defaults to no, because it generates 22 graphs - which may be a bit too verbose)\n";
        exit 0;
    }
    else {
        foreach $val (sort keys %{$aspects{$key}{'values'}}) {
            if (!defined($datas{$val})) {
                next;
            }
            print "$val.value $datas{$val}\n";
        }
        print "\n";
    }
}
