snmpit_hp.pm 60.5 KB
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#!/usr/bin/perl -w

#
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# Copyright (c) 2000-2013 University of Utah and the Flux Group.
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# Copyright (c) 2004-2010 Regents, University of California.
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# 
# {{{EMULAB-LGPL
# 
# This file is part of the Emulab network testbed software.
# 
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or (at
# your option) any later version.
# 
# This file 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 Lesser General Public
# License for more details.
# 
# You should have received a copy of the GNU Lesser General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.
# 
# }}}
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#

#
# snmpit module for HP procurve level 2 switches
#

package snmpit_hp;
use strict;

$| = 1; # Turn off line buffering on output

use English;
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use Carp;
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use SNMP;
use snmpit_lib;
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use Carp qw(cluck);
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use libtestbed;
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use Lan;
use Port;
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#
# These are the commands that can be passed to the portControl function
# below
#
my %cmdOIDs =
(
    "enable" => ["ifAdminStatus","up"],
    "disable"=> ["ifAdminStatus","down"],
    "1000mbit"=> ["hpSwitchPortFastEtherMode","auto-1000Mbits"],
    "100mbit"=> ["hpSwitchPortFastEtherMode","auto-100Mbits"],
    "10mbit" => ["hpSwitchPortFastEtherMode","auto-10Mbits"],
    "auto"   => ["hpSwitchPortFastEtherMode","auto-neg"],
    "full"   => ["hpSwitchPortFastEtherMode","full"],
    "half"   => ["hpSwitchPortFastEtherMode","half"],
);

#
# some long OIDs that get used frequently.
#
my $normOID = "dot1qVlanStaticUntaggedPorts";
my $forbidOID = "dot1qVlanForbiddenEgressPorts";
my $egressOID = "dot1qVlanStaticEgressPorts";
my $aftOID = "dot1qPortAcceptableFrameTypes";
my $createOID = "dot1qVlanStaticRowStatus";

#
# Openflow OIDs, only number format now.
#
#my $ofOID = 'iso.org.dod.internet.private.enterprises.11.2.14.11.5.1.7.1.35';
my $ofOID = '1.3.6.1.4.1.11.2.14.11.5.1.7.1.35';
my $ofEnableOID     = $ofOID.'.1.1.2';
my $ofControllerOID = $ofOID.'.1.1.3';
my $ofListenerOID   = $ofOID.'.1.1.4';
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my $ofFailModeOID   = $ofOID.'.1.1.11';
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my $ofSupportOID    = $ofOID.'.2.1.0';

# This string is enough now, but the Openflow OID may change in future. 
# The maintainers should keep in mind of this ID. 
my $ofListenerVarNameMarker = '35.1.1.4';

#
# Ports can be passed around in three formats:
# ifindex: positive integer corresponding to the interface index (eg. 42)
# modport: dotted module.port format, following the physical reality of
#	Cisco switches (eg. 5.42)
# nodeport: node:port pair, referring to the node that the switch port is
# 	connected to (eg. "pc42:1")
#
# See the function convertPortFormat below for conversions between these
# formats
#
my $PORT_FORMAT_IFINDEX  = 1;
my $PORT_FORMAT_MODPORT  = 2;
my $PORT_FORMAT_NODEPORT = 3;
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my $PORT_FORMAT_PORT = 4;
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#
# Creates a new object.
#
# usage: new($classname,$devicename,$debuglevel,$community)
#        returns a new object, blessed into the snmpit_intel class.
#
sub new($$$;$) {

    # The next two lines are some voodoo taken from perltoot(1)
    my $proto = shift;
    my $class = ref($proto) || $proto;

    my $name = shift;
    my $debugLevel = shift;
    my $community = shift;

    #
    # Create the actual object
    #
    my $self = {};

    #
    # Set the defaults for this object
    # 
    if (defined($debugLevel)) {
	$self->{DEBUG} = $debugLevel;
    } else {
	$self->{DEBUG} = 0;
    }
    $self->{BLOCK} = 1;
    $self->{CONFIRM} = 1;
    $self->{NAME} = $name;

    #
    # Get config options from the database
    #
    my $options = getDeviceOptions($self->{NAME});
    if (!$options) {
	warn "ERROR: Getting switch options for $self->{NAME}\n";
	return undef;
    }

    $self->{MIN_VLAN}         = $options->{'min_vlan'};
    $self->{MAX_VLAN}         = $options->{'max_vlan'};

    if ($community) { # Allow this to over-ride the default
	$self->{COMMUNITY}    = $community;
    } else {
	$self->{COMMUNITY}    = $options->{'snmp_community'};
    }

    #
    # set up hashes for internal use
    #
    $self->{IFINDEX} = {};
    $self->{TRUNKINDEX} = {};
    $self->{TRUNKS} = {};

    # other global variables
    $self->{DOALLPORTS} = 0;
    $self->{DOALLPORTS} = 1;
    $self->{SKIPIGMP} = 1;

    if ($self->{DEBUG}) {
	print "snmpit_hp initializing $self->{NAME}, " .
	    "debug level $self->{DEBUG}\n" ;   
    }


    #
    # Set up SNMP module variables, and connect to the device
    #
    $SNMP::debugging = ($self->{DEBUG} - 2) if $self->{DEBUG} > 2;
    my $mibpath = '/usr/local/share/snmp/mibs';
    &SNMP::addMibDirs($mibpath);
    &SNMP::addMibFiles("$mibpath/SNMPv2-SMI.txt", "$mibpath/SNMPv2-TC.txt", 
	               "$mibpath/SNMPv2-MIB.txt", "$mibpath/IANAifType-MIB.txt",
		       "$mibpath/IF-MIB.txt", "$mibpath/BRIDGE-MIB.txt", 
		       "$mibpath/HP-ICF-OID.txt");
    $SNMP::save_descriptions = 1; # must be set prior to mib initialization
    SNMP::initMib();		  # parses default list of Mib modules 
    $SNMP::use_enums = 1;	  # use enum values instead of only ints

    warn ("Opening SNMP session to $self->{NAME}...") if ($self->{DEBUG});

    $self->{SESS} = new SNMP::Session(DestHost => $self->{NAME},Version => "2c",
	Timeout => 4000000, Retries=> 12, Community => $self->{COMMUNITY});

    if (!$self->{SESS}) {
	#
	# Bomb out if the session could not be established
	#
	warn "WARNING: Unable to connect via SNMP to $self->{NAME}\n";
	return undef;
    }
    #
    # The bless needs to occur before readifIndex(), since it's a class 
    # method
    #
    bless($self,$class);

    #
    # Sometimes the SNMP session gets created when there is no connectivity
    # to the device so let's try something simple
    #
    my $test_case = $self->get1("sysObjectID", 0);
    if (!defined($test_case)) {
	warn "WARNING: Unable to retrieve via SNMP from $self->{NAME}\n";
	return undef;
    }
    $self->{HPTYPE} = SNMP::translateObj($test_case);

    $self->readifIndex();

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    # Utah debugging.
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    $self->{DEBUG} = 0;    
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    return $self;
}

# Attempt to repeat an action until it succeeds

sub hammer($$$;$) {
    my ($self, $closure, $id, $retries) = @_;

    if (!defined($retries)) { $retries = 12; }
    for my $i (1 .. $retries) {
	my $result = $closure->();
	if (defined($result) || ($retries == 1)) { return $result; }
	warn $id . " ... will try again\n";
	sleep 1;
    }
    warn  $id . " .. giving up\n";
    return undef;
}

# shorthand

sub get1($$$) {
    my ($self, $obj, $instance) = @_;
    my $id = $self->{NAME} . "::get1($obj.$instance)";
    my $closure = sub () {
	my $RetVal = snmpitGet($self->{SESS}, [$obj, $instance], 1);
	if (!defined($RetVal)) { sleep 4;}
	return $RetVal;
    };
    my $RetVal = $self->hammer($closure, $id, 40);
    if (!defined($RetVal)) {
	warn "$id failed - $snmpit_lib::snmpitErrorString\n";
    }
    return $RetVal;
}

sub set($$;$$) {
    my ($self, $varbind, $id, $retries) = @_;
    if (!defined($id)) { $id = $self->{NAME} . ":set "; }
    if (!defined($retries)) { $retries = 2; }
    my $sess = $self->{SESS};
    my $closure = sub () {
	my $RetVal = $sess->set($varbind);
	my $status = $RetVal;
	if (!defined($RetVal)) {
	    $status = "(undefined)";
	    if ($sess->{ErrorNum}) {
		my $bad = "$id had error number " . $sess->{ErrorNum} .
			  " and had error string " . $sess->{ErrorStr} . "\n";
		print $bad;
	    }
	}
	return $RetVal;
    };
    my $RetVal = $self->hammer($closure, $id, $retries);
    return $RetVal;
}

sub mirvPortSet($) {
    my ($bitfield) = @_;
    my $unpacked = unpack("B*",$bitfield);
    return [split //, $unpacked];
}

sub testPortSet($$) {
    my ($bitfield, $index) = @_;
    return @{mirvPortSet($bitfield)}[$index];
}

#
# opPortSet($op, $bitfield, @indices)
# set or clear bits in a port set,  $op > 0 means set, otherwise clear
#
sub opPortSet($$@) {
    my ($op, $bitfield, @indices) = @_;
    my @bits = mirvPortSet($bitfield);

    foreach my $index (@indices) { $bits[$index] = $op > 0 ? 1 : 0; }

    return pack("B*", join('',@bits));
}

# Translate a list of ifIndexes to a PortSet

sub listToPortSet($@)
{
    my $self = shift;
    my @ports = @_;

    my ($max, $portbitstring, $portSet, $port);
    my @portbits;

    $self->debug("listToPortsSet: input @ports\n",2);
    if (scalar @ports) {
	@ports = sort { $b <=> $a} @ports;
	$max = ($ports[0] | 7);
    } else { $max = 7 ; }
    $port = 0;
    while ($port <= $max) { $portbits[$port] = 48 ; $port++; }
    while (scalar @ports) { $port = pop @ports; $portbits[$port] = 49; }
    $self->debug("portbits after insertions: @portbits\n",2);
    $portbitstring = pack "C*", @portbits;
    $self->debug("listToPortSet output string $portbitstring \n");
    $portSet = pack "B*", $portbitstring ;
    return $portSet;
}

# Translate a PortSet to a list of ifIndexes

sub bitSetToList($)
{
    my ($arrayref) = @_;
    my @ports = ();
    my $max = scalar (@$arrayref);

    for (my $port = 0; $port < $max; $port++)
	{ if (@$arrayref[$port]) { push @ports, (1 + $port); } }
    return @ports;
}

sub portSetToList($$) {
    my ($self, $portset) = @_;
    return bitSetToList(mirvPortSet($portset));
}

# Compare two PortSets for equality ignoring trailing zeroes, etc.

sub portSetDiffers($$$)
{
    my $self = shift;
    my $setA = shift;
    my $setB = shift;

    my @listA = $self->portSetToList($setA);
    my @listB = $self->portSetToList($setB);

    while (@listA) {
	my $itemA = pop @listA;
	my $itemB;
	if (@listB) { $itemB = pop @listB; } else { return 1;}
	if ($itemA != $itemB) {return 1;}
    }
    if (@listB) {return 1;} else {return 0;}
}

#
# Set a variable associated with a port. The commands to execute are given
# in the cmdOIs hash above
#
# usage: portControl($self, $command, @ports)
#	 returns 0 on success.
#	 returns number of failed ports on failure.
#	 returns -1 if the operation is unsupported
#
sub portControl ($$@) {
    my $self = shift;

    my $cmd = shift;
    my @ports = @_;

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    $self->debug("portControl: $cmd -> (".Port->toStrings(@ports).")\n");
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    #
    # Find the command in the %cmdOIDs hash (defined at the top of this file).
    # Some commands involve multiple SNMP commands, so we need to make sure
    # we get all of them
    #
    if (defined $cmdOIDs{$cmd}) {
	my @oid = @{$cmdOIDs{$cmd}};
	my $errors = 0;

	while (@oid) {
	    my $myoid = shift @oid;
	    my $myval = shift @oid;
	    $errors += $self->UpdateField($myoid,$myval,@ports);
	}
	return $errors;
    } else {
	#
	# Command not supported
	#
	$self->debug("Unsupported port control command '$cmd' ignored.\n");
	return 0;
    }
}

#
# HP's refuse to create vlans with display names that can
# be interpreted as vlan numbers
#
sub convertVlanName($) {
	my $id = shift;
	my $new;
	if ( $id =~ /^_(\d+)$/) {
	    $new = $1;
	    return ((($new > 0) && ($new  < 4095)) ? $new : $id);
	}
	if ( $id =~ /^(\d+)$/) {
	    $new = $1;
	    return ((($new > 0) && ($new  < 4095)) ? "_$new" : $id);
	}
	return $id;
}

#
# Try to pull a VLAN number out of a long OID string
#
sub parseVlanNumberFromOID($) {
    my ($oid) = @_;
    # OID must be a dotted string
    my (@elts) = split /\./, $oid;
    if (scalar(@elts) < 2) {
        return undef;
    }
    # Second-to-last element must be the right text string or numeric ID
    if ($elts[$#elts-1] eq "dot1qVlanStaticName" || $elts[$#elts-1] eq "1") {
        # Last element must be numeric
        if ($elts[$#elts] =~ /\d+/) {
            return $elts[$#elts];
        } else {
            return undef;
        }
    } else {
        return undef;
    }
}

sub checkLACP($$) {
   my ($self, $port) = @_;
   if (my $j = $self->{TRUNKINDEX}{$port})
       { $port = $j + $self->{TRUNKOFFSET}; }
   return $port;
}

#
# Convert a set of ports to an alternate format. The input format is detected
# automatically. See the declarations of the constants at the top of this
# file for a description of the different port formats.
#
# usage: convertPortFormat($self, $output format, @ports)
#        returns a list of ports in the specified output format
#        returns undef if the output format is unknown
#
# TODO: Add debugging output, better comments, more sanity checking
#
sub convertPortFormat($$@) {
    my $self = shift;
    my $output = shift;
    my @ports = @_;
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    my @results = ();
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    #
    # Avoid warnings by exiting if no ports given
    # 
    if (!@ports) {
	return ();
    }

    #
    # We determine the type by sampling the first port given
    #
    my $sample = $ports[0];
    if (!defined($sample)) {
	warn "convertPortFormat: Given a bad list of ports\n";
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	return ();
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    }

    my $input;
    SWITCH: for ($sample) {
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    	(Port->isPort($sample)) && do { $input = $PORT_FORMAT_PORT; last; };
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	(/^\d+$/) && do { $input = $PORT_FORMAT_IFINDEX; last; };
	(/^\d+\.\d+$/) && do { $input = $PORT_FORMAT_MODPORT; last; };
	(/^$self->{NAME}\.\d+\/\d+$/) && do { $input = $PORT_FORMAT_MODPORT;
		@ports = map {/^$self->{NAME}\.(\d+)\/(\d+)$/; "$1.$2";} @ports; last; };
	$input = $PORT_FORMAT_NODEPORT; last;
    }

    #
    # It's possible the ports are already in the right format
    #
    if ($input == $output) {
	if ($input == $PORT_FORMAT_IFINDEX) {
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	    @results = map $self->checkLACP($_), @ports;
	    goto done;
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	}
	$self->debug("Not converting, input format = output format\n",3);
	return @ports;
    }

    if ($input == $PORT_FORMAT_IFINDEX) {
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    	my @mps = map $self->{IFINDEX}{$_}, @ports;
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	if ($output == $PORT_FORMAT_MODPORT) {
	    $self->debug("Converting ifindex to modport\n",3);
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	    @results = @mps;
	    goto done;
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	}
	my @tmp = @ports;
	foreach my $mp (@mps) {
	    my $port = shift(@tmp);
	    if (!defined($mp)) {
		cluck("convertPortFormat: ".
		      "bad modport conversion for $port on " .
		      $self->{NAME} . "\n");
	    }
	}
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	my @pos = map Port->LookupByStringForced($self->{NAME}.":".$_), @mps;
	
	if ($output == $PORT_FORMAT_NODEPORT) {
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	    $self->debug("Converting ifindex to nodeport\n",3);
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	    @results = map $_->getOtherEndPort()->toTripleString(), @pos;
	    goto done;
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	} elsif ($output == $PORT_FORMAT_PORT) {
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	    @results = @pos;
	    goto done;
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	}
    } elsif ($input == $PORT_FORMAT_MODPORT) {
	if ($output == $PORT_FORMAT_IFINDEX) {
	    $self->debug("Converting modport to ifindex\n",3);
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	    @results = map $self->{IFINDEX}{$_}, @ports;
	    goto done;
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	} 
	
	my @pos = map Port->LookupByStringForced($self->{NAME}.":".$_), @ports;
	
	if ($output == $PORT_FORMAT_NODEPORT) {
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	    $self->debug("Converting modport to nodeport\n",3);
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	    @results = map $_->getOtherEndPort()->toTripleString(), @pos;
	    goto done;
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	} elsif ($output == $PORT_FORMAT_PORT) {
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	    @results = @pos;
	    goto done;
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	}
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    } elsif ($input == $PORT_FORMAT_NODEPORT) {    
    	my @pos = map Port->LookupByStringForced($_)->getSwitchPort(), @ports;
    	
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	if ($output == $PORT_FORMAT_IFINDEX) {
	    $self->debug("Converting nodeport to ifindex\n",3);
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	    @results = map $self->{IFINDEX}{(split /:/, $_->toTripleString())[1]}, @pos;
	    goto done;
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	} elsif ($output == $PORT_FORMAT_MODPORT) {
	    $self->debug("Converting nodeport to modport\n",3);
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	    @results = map { (split /:/, $_->toTripleString())[1] } @pos;
	    goto done;
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	} elsif ($output == $PORT_FORMAT_PORT) {
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	    @results = @pos;
	    goto done;
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	}
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    } elsif ($input == $PORT_FORMAT_PORT) { 
    	if ($output == $PORT_FORMAT_IFINDEX) {
            $self->debug("Converting port to ifindex\n",3);
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            @results = map $self->{IFINDEX}{(split /:/,
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                                         ($_->node_id() eq $self->{NAME})?
                                         $_->toTripleString():
                                         $_->getOtherEndTripleString()
                )[1]}, @ports;
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	    goto done;
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        } elsif ($output == $PORT_FORMAT_MODPORT) {
            $self->debug("Converting port to modport\n",3);
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            @results = map { (split /:/,
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                          ($_->node_id() eq $self->{NAME})?
                          $_->toTripleString():
                          $_->getOtherEndTripleString()
                )[1] } @ports;
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	    goto done;
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        } elsif ($output == $PORT_FORMAT_NODEPORT) {
            $self->debug("Converting port to nodeport\n",3);
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            @results = map $_->getOtherEndPort()->toTripleString(), @ports;
	    goto done;
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        }
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    }

    #
    # Some combination we don't know how to handle
    #
    warn "convertPortFormat: Bad input/output combination ($input/$output)\n";
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    return ();
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  done:
    #
    # The control flow change was to facilitate trying to debug an
    # odd problem in Utah on the procuve-geni switches.
    #
    if (@results) {
	foreach my $port (@results) {
	    my $inport = shift(@ports);
	    if (!defined($port)) {
		print STDERR "convertPortFormat: Bad conversion for $inport ".
		    "($input/$output)\n";
		return ();
	    }
	    #print STDERR "convertPortFormat: $inport/$port\n";
	}
    }
    return @results;
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}
# 
# Check to see if the given 802.1Q VLAN tag exists on the switch
#
# usage: vlanNumberExists($self, $vlan_number)
#        returns 1 if the VLAN exists, 0 otherwise
#
sub vlanNumberExists($$) {
    my ($self, $vlan_number) = @_;

    my $rv = $self->get1("dot1qVlanStaticRowStatus", $vlan_number);
    if (!defined($rv) || !$rv || $rv ne "active") {
	return 0;
    }
    return 1;
}

#
# Given VLAN indentifiers from the database, finds the 802.1Q VLAN
# number for them. If not VLAN id is given, returns mappings for the entire
# switch.
# 
# usage: findVlans($self, @vlan_ids)
#        returns a hash mapping VLAN ids to 802.1Q VLAN numbers
#        any VLANs not found have NULL VLAN numbers
#
sub findVlans($@) { 
    my $self = shift;
    my @vlan_ids = @_;
    my %mapping = ();
    my $id = $self->{NAME} . "::findVlans";
    my ($count, $name, $vlan_number, $vlan_name) = (scalar(@vlan_ids));
    $self->debug("$id\n");

    if ($count > 0) { @mapping{@vlan_ids} = undef; }

    #
    # Find all VLAN names. Do one to get the first field...
    #
    my ($rows) = $self->{SESS}->bulkwalk(0,32, ["dot1qVlanStaticName"]);
    foreach my $rowref (@$rows) {
	($name,$vlan_number,$vlan_name) = @$rowref;
	$self->debug("$id: Got $name $vlan_number $vlan_name\n",2);
        # Hack to get around some strange behavior
        if ((!defined($vlan_number) || $vlan_number eq "") &&
                defined(parseVlanNumberFromOID($name))) {
            $vlan_number = parseVlanNumberFromOID($name);
            $self->debug("Changed vlan_number to $vlan_number\n",3);
        }
	$vlan_name = convertVlanName($vlan_name);
	#
	# We only want the names - we ignore everything else
	#
	    if (!@vlan_ids || exists $mapping{$vlan_name}) {
		$self->debug("$id: $vlan_name=>$vlan_number\n",2);
		$mapping{$vlan_name} = $vlan_number;
	    }
    }

    return %mapping;
}

#
# Given a VLAN identifier from the database, find the 802.1Q VLAN
# number that is assigned to that VLAN. Retries several times (to account
# for propagation delays) unless the $no_retry option is given.
#
# usage: findVlan($self, $vlan_id,$no_retry)
#        returns the VLAN number for the given vlan_id if it exists
#        returns undef if the VLAN id is not found
#
sub findVlan($$;$) { 
    my $self = shift;
    my $vlan_id = shift;
    my $no_retry = shift;
    my $id = $self->{NAME} . ":findVlan";

    $self->debug("$id ( $vlan_id )\n",2);
    my $max_tries = $no_retry ? 1 : 5;
    #
    # We try this a few times, with 5 second sleeps, since it can take
    # a while for VLAN information to propagate
    #
    my $closure = sub () {
	my %mapping = $self->findVlans($vlan_id);
	my $vlan_number = $mapping{$vlan_id};
	if (defined($vlan_number)) { return $vlan_number; }
	sleep 4;
	return undef;
    };
    return $self->hammer($closure,$id,$max_tries);
}

#   
# Create a VLAN on this switch, with the given identifier (which comes from
# the database) and given 802.1Q tag number.
#
# usage: createVlan($self, $vlan_id, $vlan_number)
#        returns the new VLAN number on success
#        returns 0 on failure
#
sub createVlan($$$) {
    my $self = shift;
    my $vlan_id = shift;
    my $vlan_number = shift;
    my $id = $self->{NAME} . ":createVlan";

    if (!defined($vlan_number)) {
	warn "$id called without supplying vlan_number";
	return 0;
    }
    my $check_number = $self->findVlan($vlan_id,1);
    if (defined($check_number)) {
	if ($check_number != $vlan_number) {
		warn "$id: recreating vlan id $vlan_id which has ".
		     "existing vlan number $check_number with the new number ".
		     "$vlan_number\n";
		     return 0;
	}
     }
    my $vlan ="$vlan_number";
    my $hpvlan_id = convertVlanName("$vlan_id");
    my $VlanName = 'dot1qVlanStaticName'; # vlan # is index
    $self->debug("createVlan: name $vlan_id number $vlan_number \n");
    #
    # Perform the actual creation. Yes, this next line MUST happen all in
    # one set command....
    #
    my $closure = sub () {
    	my $RetVal = $self->set
	       ([[$VlanName,$vlan,$hpvlan_id,"OCTETSTR"],
	     [$createOID,$vlan, "createAndGo","INTEGER"]], "$id: creation");
	if (defined($RetVal)) { return $RetVal; }
	#
	# Sometimes we loose responses, or on the second time around
	# it might refuse to create a vlan that's already there, so wait
	# a bit to see if it exists (also so as to not get too agressive
	# with the switch which caused nortels to crash with IGMP stuff)
	#
	sleep (2);
	$RetVal = $self->get1($createOID, $vlan);
	if (defined($RetVal) && ($RetVal ne "active")) { return undef ;}
	return $RetVal;
    };
    my $RetVal = $self->hammer($closure, "$id: creation");
    if (!defined($RetVal)) { return 0; }
    print "  Creating VLAN $vlan_id as VLAN #$vlan_number on " .
	    "$self->{NAME} ...\n";

    #
    # Check that it happened.
    #
    $RetVal = $self->get1($VlanName, $vlan);
    if (!defined($RetVal) || ("$RetVal" ne $hpvlan_id)) {
	warn "$id: created vlan $vlan_id with name $RetVal" .
	  "instead of $hpvlan_id\n";
    }

    if ($self->{SKIPIGMP}) { return $vlan_number ; }

    # XXX the following code has *NEVER* been tested.

    my $IgmpEnable = 'hpSwitchIgmpState';
    $RetVal = $self->get1($IgmpEnable, $vlan);

    $closure = sub () {
	my $check = $self->set([[$IgmpEnable,$vlan,"enable","INTEGER"]]);
	if (!defined($check) || ($check ne "enable"))
		{ sleep (19); return undef;}
	return $check;
    };
    $RetVal = $self->hammer($closure, "$id: setting snooping");
    if (!defined($RetVal)) { return 0; }

    $closure = sub () {
	my $check = $self->get1($IgmpEnable, $vlan);
	if (!defined($check) || ($check ne "enable"))
		{ sleep (4); return undef ;}
	return $check;
    };
    $RetVal = $self->hammer($closure, "$id: checking snooping");
    if (!defined($RetVal)) { return 0; }

    return $vlan_number;
}

sub snmpSetCheckPortSet($$$$)
{
    my ($self, $obj, $vlan_number, $SetVal) = @_;
    my $id = $self->{NAME} . "::SetCheckPortSet";
    my $set_arg = [$obj,$vlan_number,$SetVal,"OCTETSTR"];
    my $counter = 0;
    my ($inner_closure, $outer_closure, $final_check);

    $inner_closure = sub () {
	my $ctr_p =\$counter;
	$$ctr_p++;
	my $check = $self->get1($obj, $vlan_number);
	if (!defined($check)) { sleep 2; return undef; }
	if ($self->portSetDiffers($check, $SetVal)) {
	    if ($$ctr_p == 8) {
		my @oldList = $self->portSetToList($SetVal);
		my @newList = $self->portSetToList($check);
		print "SetCheckPortSet result for vlan # $vlan_number " 
		. "differs from what was set -  old is @oldList\n " 
		. "new is @newList \n";
	    }
	    return undef;
	}
	return $check;
    };
    $outer_closure = sub () {
	my $ctr_p = \$counter;
	$$ctr_p = 0;
	my $RetVal = $self->{SESS}->set($set_arg);
	if (!defined($RetVal)) {
	    my $reason = "";
	    if (defined($snmpit_lib::snmpitErrorString)) {
		    $reason = $snmpit_lib::snmpitErrorString;
	    };
	    warn "$id: SetCheckPortSet set $obj may have failed: $reason\n";
	    sleep 4;
	}
	return $self->hammer($inner_closure, $id, 8);
    };
    $final_check = $self->hammer($outer_closure, $id, 4);
    if (defined($final_check)) { return 0; }
    return 1;
}

#
# gets the forbidden, untagged, and egress lists for a vlan
# sends back as a 3 element array of lists.  (Thats the order
# the packet traces for the HP had them in).
#
sub getVlanLists($$) {
    my ($self, $vlan) = @_;
    my $ret = [0, 0, 0];
    @$ret[0] = mirvPortSet($self->get1($forbidOID, $vlan));
    @$ret[1] = mirvPortSet($self->get1($normOID, $vlan));
    @$ret[2] = mirvPortSet($self->get1($egressOID, $vlan));
    return $ret;
}

#
# sets the forbidden, untagged, and egress lists for a vlan
# sends back as a 3 element array of lists.
# (Thats the order we saw in a tcpdump of vlan creation.)
# (or in some cases 6 elements for 2 vlans).
#
sub setVlanLists($@) {
    my ($self, @args) = @_;
    my $oids = [$forbidOID, $normOID, $egressOID];
    my $j = 0; my $todo = [ 0 ];
    while (@args) {
	my $vlan = shift @args;
	my $arrayref = shift @args;
	foreach my $i (0, 1, 2) {
	    @$todo[$j++] = [ @$oids[$i], $vlan,
		    pack("B*",join('', @{@$arrayref[$i]})), "OCTETSTR"];
	}
    }
    $j = $self->set($todo);
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    if (!defined($j)) { cluck "vlists failed\n";}
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    return $j;
}

#
# Some design comments about HP switch conventions:

# This code was written after having observed packet traces while
# running the HP management tool, which appeared to remove a port
# from a vlan merely by getting and setting the 3 OID in getVlanLists
# or transferred it between vlans by setting a pair of the 3 OIDS.

# It seems that a port may be an untagged member of at most one vlan
# but may be a tagged member of several others,  i.e. the packets
# ared rx'd from the port or tx'd to the port with vlan tags added.

# If a port appears only in the $egressOIDs and never in a $normOID
# (so that it is like a normal interswitch single wire trunk), the
# The $aftOID = admitOnlyVlanTagged, without our having to set it.

# The OID describing the PVID of a port seem to correspond to
# the untagged membership of the port in some vlan, and it does
# not seem necessary to set this OID either.

# In this case, the port has $aftOID (dot1QPortAceptableFrameType) = admitAll.

# If we want the port to be like dual mode port on a foundry or cisco, we can
# merely add the port to the egress OID of any additonal vlan.

# However, if a switch belongs to a unique vlan, and is an untagged member,
# there would be no way to determine if the intent was to be a dual mode port
# or for the port have the semantics of most other switches, i.e. adding it
# to one vlan takes it out of the first.

# Since this is the common case, we record the dual mode intent
# by marking the port as being forbidden to join vlan 1.

#
# Put the given ports in the given VLAN. The VLAN is given as an 802.1Q 
# tag number.
#
# usage: setPortVlan($self, $vlan_number, @ports)
#	 returns 0 on sucess.
#	 returns the number of failed ports on failure.
#
sub setPortVlan($$@) {
    my $self = shift;
    my $vlan_number = shift;
    my @ports = @_;

    my $id = $self->{NAME} . "::setPortVlan($vlan_number)";
    $self->debug($id);
    my %vlansToPorts; # i.e. bumpedVlansToListOfPorts
    my @newTaggedPorts = ();
    my ($errors, $portIndex, $pvid, $rv, @protoTrunks) = (0);
	   
    #
    # Run the port list through portmap to find the ports on the switch that
    # we are concerned with
    #

    return 0 unless(@ports);
    my @portlist = $self->convertPortFormat($PORT_FORMAT_IFINDEX, @ports);
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    return -1
	if (!@portlist);
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    $self->debug("as ifIndexes: " . join(",",@portlist) . "\n");

    #
    # Need to determine status and remove ports from default_vlan
    # before adding to other.  This is a read_modify_write so lock out
    # other instances of snmpit_hp.

    my $defaultInfo = $self->getVlanLists(1);
    foreach $portIndex (@portlist) {
	# check for three easy cases
	# a. known dual port.
	# b. the ports is not allocated
	# c. the port is a trunk

	# case a: This is a dual port, so it doesn't have to leave its PVID.
	if (@{@$defaultInfo[0]}[$portIndex - 1]) {
	    push @newTaggedPorts, $portIndex;
	    next;
	}
	# case b: Unallocated untrunked port.
	if (@{@$defaultInfo[1]}[$portIndex - 1]) {
	    $pvid = 1;
	} else {
	    my $tagOnly = $self->get1($aftOID,$portIndex);
	    if ($tagOnly eq "admitOnlyVlanTagged") {
		# case c: Trunk Port
		if (@{@$defaultInfo[2]}[$portIndex - 1]) {
		    # Total grot - happens when port was made an equal trunk
		    # having no vlans, so is on vlan 1, and might be disabled.
		    # It might also be the case that this version of the driver
		    # is being run for the first time on a switch where
		    # we were previously sloppier about membership in vlan 1.
		    push @protoTrunks, $portIndex;
		}
		push @newTaggedPorts, $portIndex;
		next;
	    } else {
		# case d: untrunked port leaving another vlan.
		# a little more work - get its PVID and assume that
		# is the vlan which it is leaviing. and toss it
		# into the bumpedVlan hash.
		$pvid = $self->get1("dot1qPvid", $portIndex);
	    }
	}
	push @{$vlansToPorts{$pvid}}, $portIndex # autovivifies if null
	    if (defined($pvid) && ($pvid != $vlan_number));
    }
    @{$self->{DISPLACED_VLANS}} = grep {$_ != 1;} keys %vlansToPorts;
 
    $self->lock();
    my $newInfo = $self->getVlanLists($vlan_number);
    foreach my $vlan (keys %vlansToPorts) {
	my $oldInfo = $self->getVlanLists($vlan) ;
	foreach $portIndex (@{$vlansToPorts{$vlan}}) {
	    @{@$oldInfo[1]}[$portIndex-1] = 0;
	    @{@$newInfo[1]}[$portIndex-1] = 1;
	    @{@$oldInfo[2]}[$portIndex-1] = 0;
	    @{@$newInfo[2]}[$portIndex-1] = 1;
	}
	$self->setVlanLists($vlan, $oldInfo, $vlan_number, $newInfo);
    }

    # Now add tagged ports separately, just to be safe.

    if (@newTaggedPorts) {
	foreach $portIndex (@newTaggedPorts)
		{ @{@$newInfo[2]}[$portIndex-1] = 1; }
	$self->setVlanLists($vlan_number, $newInfo);
    }
    $self->unlock();

    # We need to make sure the ports get enabled, and protoTrunks cleaned up.

    if (@protoTrunks) {
	$rv = $self->delPortVlan(1, @protoTrunks) +
		    $self->portControl("enable", @protoTrunks);
	$errors += $rv;
	warn "$id: $rv failures with protoTrunks\n"
	     if ($rv);
    }

    my $onoroff = ($vlan_number ne "1") ? "enable" : "disable";
    if ( $rv = $self->portControl($onoroff, @ports) ) {
	warn "$id: Port enable had $rv failures.\n";
	$errors += $rv;
    }

    return $errors;
}

sub not_in($$@) {
    my $self = shift;
    my $value = shift;
    my @list = @_;

    return 0 == scalar(grep {$_ == $value;} @list);
}

#
# Remove the given ports from the given VLAN. The VLAN is given as an 802.1Q 
# tag number.
#
# usage: delPortVlan($self, $vlan_number, @ports)
#	 returns 0 on sucess.
#	 returns the number of failed ports on failure.
#
sub delPortVlan($$@) {
    my $self = shift;
    my $vlan_number = shift;
    my @ports = @_;

    return $self->updateOneVlan(0,0,0,$vlan_number,@ports);
}

sub updateOneVlan($$$$$@)
{
    my ($self,$forbid,$untag,$mem,$vlan_number,@ports) = @_;

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    $self->debug($self->{NAME} .
		 "::updateOneVlan($forbid,$untag,$mem,$vlan_number) ");
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    #
    # Run the port list through portmap to find the ports on the switch that
    # we are concerned with
    #

    $self->lock();
    my @portlist = $self->convertPortFormat($PORT_FORMAT_IFINDEX, @ports);
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    return -1
	if (! @portlist);
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    $self->debug("as ifIndexes: " . join(",",@portlist) . "\n");

    my $vlist = $self->getVlanLists($vlan_number);
    foreach my $port (@portlist) {
	@{@$vlist[0]}[$port - 1] = $forbid if ($vlan_number eq "1");
	@{@$vlist[1]}[$port - 1] = $untag;
	@{@$vlist[2]}[$port - 1] = $mem;
    }
    my $result = $self->setVlanLists($vlan_number, $vlist);
    $self->unlock();
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    if (!defined($result)) {
	print STDERR $self->{NAME} .
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	    ": updateOneVlan($forbid,$untag,$mem,$vlan_number) failed for: ";
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	foreach my $port (@ports) {
	    my $ifindex = shift(@portlist);
	    print STDERR "$port:$ifindex ";
	}
	print STDERR "\n";
    }
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    return defined($result) ? 0 : 1;
}

#
# Disables all ports in the given VLANS. Each VLAN is given as a VLAN
# 802.1Q tag value.
#
# usage: removePortsFromVlan(self,@vlan)
#	 returns 0 on sucess.
#	 returns the number of failed ports on failure.
#
sub removePortsFromVlan($@) {
    my $self = shift;
    my @vlan_numbers = @_;
    my $errors = 0;
    my $id = $self->{NAME} . "::removePortsFromVlan";

    foreach my $vlan_number (@vlan_numbers) {
	my @ports = $self->portSetToList($self->get1($egressOID, $vlan_number));
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	if (@ports) {
	    $errors += $self->removeSomePortsFromVlan($vlan_number, @ports);
	}
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    }
    return $errors;
}

#
# Removes and disables some ports in a given VLAN.
# The VLAN is given as a VLAN 802.1Q tag value.
#
# usage: removeSomePortsFromVlan(self,vlan,@ports)
#	 returns 0 on sucess.
#	 returns the number of failed ports on failure.
#
sub removeSomePortsFromVlan($$@) {
    my ($self, $vlan_number, @ports) = @_;
    my ($errors, $changes, $id, %porthash, $tagOnly, $pvid) =
	(0, 0, $self->{NAME} . "::removeSomePortsFromVlan");

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    # Callers should know better.
    return 0
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	if (!@ports);
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    @ports = $self->convertPortFormat($PORT_FORMAT_IFINDEX,@ports);
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    return -1
	if (! @ports);
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    @porthash{@ports} = @ports;
    my $dualPorts = mirvPortSet($self->get1($forbidOID, 1)); # array

    foreach my $portIndex (@ports) {
	if (@$dualPorts[$portIndex-1]) {
	    # We make any dual ports whose PVID is this vlan into equaltrunks.
	    # A dualtrunked port whose primary vlan is not this vlan
	    # can be deleted by the code dealing with normal ports
	    $pvid = $self->get1("dot1qPvid", $portIndex);
	    next if ("$pvid" ne $vlan_number);
	    $self->updateOneVlan(0,0,1,$vlan_number,$portIndex); #make tagged
	    $self->updateOneVlan(0,0,0,1,$portIndex); # clear dual marker.
	    # fall through to next case
	}
	$tagOnly = $self->get1($aftOID,$portIndex);
	if ($tagOnly eq "admitOnlyVlanTagged") {
	    if ($self->delPortVlan($vlan_number, $portIndex)) {
		# assume it failed because it belonged to no other vlans
		# so add it to vlan 1 and try again.
		$self->updateOneVlan(0,0,1,1,$portIndex);
		if ($self->delPortVlan($vlan_number, $portIndex)) {
		    warn "$id: failed to remove ifIndex $portIndex\n";
		}
	    }
	    delete $porthash{$portIndex};
	}
    }

    # Now, remove the remaining ports from the vlan.
    $self->lock();
    my $defaultLists = $self->getVlanLists(1);
    my $vLists = $self->getVlanLists($vlan_number);
    my @portlist = bitSetToList(@$vLists[2]);
    $self->debug("$id $vlan_number: @portlist\n",2);

    foreach my $portIndex (@portlist) {
	next unless exists($porthash{$portIndex});
	if (@{@$vLists[1]}[$portIndex - 1]) {
	    # otherwise, port is tagged.

	    @{@$defaultLists[1]}[$portIndex - 1] = 1;
	    @{@$defaultLists[2]}[$portIndex - 1] = 1;
	    $self->debug("disabling port $portIndex  "
			    . "from vlan $vlan_number \n" );
	    $self->set(["ifAdminStatus",$portIndex,"down","INTEGER"],$id);
	}
	@{@$vLists[1]}[$portIndex - 1] = 0;
	@{@$vLists[2]}[$portIndex - 1] = 0;
	$changes++;
    }
    $errors += $self->setVlanLists($vlan_number, $vLists, 1, $defaultLists)
	    if ($changes > 0);
    $self->unlock();
    return $errors;
}

#
# Remove the given VLANs from this switch. Removes all ports from the VLAN,
# The VLAN is given as a VLAN identifier from the database.
#
# usage: removeVlan(self,int vlan)
#	 returns 1 on success
#	 returns 0 on failure
#
#
sub removeVlan($@) {
    my $self = shift;
    my @vlan_numbers = @_;
    my $errors = 0;
    my $name = $self->{NAME};

    $self->removePortsFromVlan(@vlan_numbers);
    foreach my $vlan_number (@vlan_numbers) {
	#
	# Perform the actual removal
	#
	print "  Removing VLAN # $vlan_number ... ";
	my $RetVal = $self->set([[$createOID,$vlan_number,"destroy","INTEGER"]]);
	if ($RetVal) {
	    print "Removed VLAN $vlan_number on switch $name.\n";
	} else {
	    print STDERR "Removing VLAN $vlan_number failed on switch $name.\n";
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	    $errors++;
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	}
	# The next call would buy time to let switch consolidate itself
	# Nortels have bizarre failures when quickly creating and destroying
	# vlans with IGMP snooping enabled.
	# $self->{SESS}->bulkwalk(0,32,[$createOID]);
    }
    return ($errors == 0) ? 1 : 0;
}

#
# XXX: Major cleanup
#
sub UpdateField($$$@) {
    my ($self, $OID, $val, @ports)= @_;
    my $id = $self->{NAME} . "::UpdateField OID $OID value $val";

    my $result = 0;
    my $oidval = $val;
    my ($Status, $portname, $row);


    foreach $portname (@ports) {
1242 1243 1244
	my ($row) = $self->convertPortFormat($PORT_FORMAT_IFINDEX,$portname);
	next
	    if (!defined($row));
1245 1246 1247
	$self->debug("checking row $row for $val ...\n");
	$Status = $self->get1($OID,$row);
	if (!defined($Status)) {
1248
	    print STDERR "id: Port $portname No answer from device\n"; 
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
	    next;
	}
	$self->debug("Port $portname, row $row was $Status\n");
	if ($OID eq "hpSwitchPortFastEtherMode") {
	    #
	    # Procurves use the same mib variable to set both
	    # speed and duplex concurrently; only certain
	    # combinations are permitted.  (We won't support
	    # auto-10-100MBits. And at least the 5400 series
	    # doesn't seem to support full-duplex-1000Mbits.)
	    #
	    my @state = split "-", $Status;
	    if (($val eq "half") || ($val eq "full")) {
		if ($state[0] eq "auto") {
		    if (($state[1] eq "neg") || ($state[1] eq "10")) {
			# can't autospeed with specific duplex.
			$oidval = ($val eq "half") ?
			   "half-duplex-100Mbits" : "full-duplex-100Mbits";
		    } elsif ($state[1] eq "1000Mbits") {
			$oidval = $Status;
		    } else {
			$oidval = $val . "-duplex-" . $state[1] ;
		    }
		} else {
			$oidval = $val . "-duplex-" . $state[2] ;
		}
	    } else {
		if (($val eq "auto-neg") || ($val eq "auto-1000Mbits") ||
			($state[1] ne "duplex")) {
		    $oidval = $val;
		} else {
		    my @valarr = split "-", $val;
		    $oidval = $state[0] . "-duplex-" . "$valarr[1]";
		}
	    }
	}
	if ($Status ne $oidval) {
	    $self->debug("Setting $portname (r $row) to $oidval...");
	    $Status = $self->set([[$OID,$row,$oidval,"INTEGER"]]);
	    $result =  (defined($Status)) ? 0 : -1;
	    $self->debug($result ? "failed.\n" : "succeeded.\n");
	}
    }
    return $result;
}

#
# Determine if a VLAN has any members 
# (Used by stack->switchesWithPortsInVlan())
#
sub vlanHasPorts($$) {
    my ($self, $vlan_number) = @_;

    my $portset = $self->get1($egressOID,$vlan_number);
    if (defined($portset)) {
	my @ports = $self->portSetToList($portset);
	if (@ports) { return 1; }
    }
    return 0;
}

#
# List all VLANs on the device
#
# usage: listVlans($self)
# see snmpit_cisco_stack.pm for a description of return value format
#
sub listVlans($) {
    my $self = shift;

    my %Names = ();
    my %Numbers = ();
    my %Members = ();
    my ($vlan_name, $oid, $vlan_number, $value, $rowref);
    my ($modport, $node, $ifIndex, @portlist, @memberlist);
    $self->debug($self->{NAME} . "::listVlans()\n",1);
    my $maxport = $self->{MAXPORT};
1326
    my $devicename = $self->{NAME};
1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359

    #
    # Walk the tree to find the VLAN names
    #
    my ($rows) = $self->{SESS}->bulkwalk(0,32,"dot1qVlanStaticName");
    foreach $rowref (@$rows) {
	($oid, $vlan_number, $vlan_name) = @$rowref;
	$self->debug("Got $oid $vlan_number $vlan_name\n",3);
        # Hack to get around some strange behavior
        if ((!defined($vlan_number) || $vlan_number eq "") &&
                defined(parseVlanNumberFromOID($oid))) {
            $vlan_number = parseVlanNumberFromOID($oid);
            $self->debug("Changed vlan_number to $vlan_number\n",3);
        }
	if ($vlan_number eq "1") { next;}
	$vlan_name = convertVlanName($vlan_name);
	if (!$Names{$vlan_number}) {
	    $Names{$vlan_number} = $vlan_name;
	    @{$Members{$vlan_number}} = ();
	}
    }

    #
    #  Walk the tree for the VLAN members
    #
    ($rows) = $self->{SESS}->bulkwalk(0,32,"dot1qVlanStaticEgressPorts");
    foreach $rowref (@$rows) {
	($oid,$vlan_number,$value) = @$rowref;
	if ($vlan_number == 1) { next;}
	@portlist = $self->portSetToList($value);
	$self->debug("Got $oid $vlan_number @portlist\n",3);

	foreach $ifIndex (@portlist) {
1360
	    ($node) = $self->convertPortFormat($PORT_FORMAT_PORT,$ifIndex);
1361 1362 1363 1364
	    if (!$node) {
		($modport) = $self->convertPortFormat
				    ($PORT_FORMAT_MODPORT,$ifIndex);
		$modport =~ s/\./\//;
1365
		$node = Port->LookupByStringForced($self->{NAME} . ".$modport");
1366
	    }
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
	    # Let's be clear about what kind of connection this is and
	    # get the right port object.  If there is an endpoint here,
	    # get that.  If this is a trunk, then the member we want to
	    # put in the list is the "local" side (this switch's port).
	    my $mbrport;
	    if ($node->is_trunk_port()) {
		$mbrport = $node;
	    } else {
		# getOtherEndPort() will return the object upon which the
		# method is invoked if it fails to lookup the other side.
		$mbrport = $node->getOtherEndPort();
	    }
	    push @{$Members{$vlan_number}}, $mbrport;
	    $self->debug("$devicename:$vlan_number $node:$mbrport\n", 3);

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	    if (!$Names{$vlan_number}) {
		$self->debug("listVlans: WARNING: port $node in non-existant " .
		    "VLAN $vlan_number\n", 1);
	    }
	}
    }

    #
    # Build a list from the name and membership lists
    #
    my @list = ();
    foreach my $vlan_id (sort keys %Names) {
	push @list, [$Names{$vlan_id},$vlan_id,$Members{$vlan_id}];
    }

    return @list;
}

#
# List all ports on the device
#
# usage: listPorts($self)
# see snmpit_cisco_stack.pm for a description of return value format
#
sub listPorts($) {
    my $self = shift;

    my %Able = ();
    my %Link = ();
    my %auto = ();
    my %speed = ();
    my %duplex = ();

    my $ifTable = ["ifAdminStatus",0];

    #
    # Get the ifAdminStatus (enabled/disabled) and ifOperStatus
    # (up/down)
    #
    my ($varname, $modport, $ifIndex, $portIndex, $status, $portname);
    $self->{SESS}->getnext($ifTable);
    do {
	($varname,$ifIndex,$status) = @{$ifTable};
	$self->debug("$varname $ifIndex $status\n");
	if (($ifIndex <= $self->{MAXPORT}) && ($varname =~ /AdminStatus/)) { 
	    $Able{$ifIndex} = ($status =~/up/ ? "yes" : "no");
	}
	$self->{SESS}->getnext($ifTable);
    } while ( $varname =~ /^ifAdminStatus$/) ;

    #
    # Get the port configuration, including speed, duplex, and whether or not
    # it is autoconfiguring
    #
    foreach $ifIndex (keys %Able) {
	if ($status = $self->{SESS}->get(["ifOperStatus",$ifIndex])) {
	    $Link{$ifIndex} = $status;
	}
	# HP combines speed and duplex and it has to be teased apart lexically.
	if ($status = $self->get1("hpSwitchPortFastEtherMode",$ifIndex)) {
	    my @parse = split("-duplex-", $status);
	    if (2 == scalar(@parse)) {
		$duplex{$ifIndex} = $parse[0];
		$speed{$ifIndex} = $parse[1];
	    } else {
		@parse = split("auto-",$status);
		$duplex{$ifIndex} = "auto";
		$speed{$ifIndex} = $parse[1];
		if ($speed{$ifIndex} eq "neg") {
		    $speed{$ifIndex} = "auto";
		}
	    }
	}
    };

    #
    # Put all of the data gathered in the loop into a list suitable for
    # returning
    #
    my @rv = ();
    foreach my $id ( keys %Able ) {
	$modport = $self->{IFINDEX}{$id};
	$portname = $self->{NAME} . ":$modport";
1465 1466 1467 1468
	my $port = Port->LookupByTriple($portname); 
	if (defined($port)) {
		$port = $port->getOtherEndPort();
	}
1469 1470 1471 1472 1473 1474

	#
	# Skip ports that don't seem to have anything interesting attached
	#
	if (!$port && $self->{DOALLPORTS}) {
		$modport =~ s/\./\//;
1475
		$port = Port->LookupByStringForced($self->{NAME} . ":$modport");
1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
	}
	if (!$port) {
	    $self->debug("$id ($modport) not connected, skipping\n");
	    next;
	}
	if (! defined ($speed{$id}) ) { $speed{$id} = " "; }
	if (! defined ($duplex{$id}) ) { $duplex{$id} = " "; }
	push @rv, [$port,$Able{$id},$Link{$id},$speed{$id},$duplex{$id}];
    }
    return @rv;
}

# 
# Get statistics for ports on the switch
#
# usage: getStats($self)
# see snmpit_cisco_stack.pm for a description of return value format
#
#
sub getStats() {
    my $self = shift;

    #
    # Walk the tree for the VLAN members
    #
    my $vars = new SNMP::VarList(['ifInOctets'],['ifInUcastPkts'],
    				 ['ifInNUcastPkts'],['ifInDiscards'],
				 ['ifInErrors'],['ifInUnknownProtos'],
				 ['ifOutOctets'],['ifOutUcastPkts'],
				 ['ifOutNUcastPkts'],['ifOutDiscards'],
				 ['ifOutErrors'],['ifOutQLen']);
    my @stats = $self->{SESS}->bulkwalk(0,32,$vars);

    #
    # We need to flip the two-dimentional array we got from bulkwalk on
    # its side, and convert ifindexes into node:port
    #
    my $i = 0;
    my %stats;
    foreach my $array (@stats) {
	while (@$array) {
	    my ($name,$ifindex,$value) = @{shift @$array};

            # See comments in walkTable above.

            if (! defined $self->{IFINDEX}{$ifindex}) { next; }
1522 1523 1524 1525
            my $po = convertPortFromString("$self->{NAME}:$ifindex")
            	|| convertPortFromString("$self->{NAME}:".$self->{IFINDEX}{$ifindex});
            if (! defined $po) { next; } # Skip if we don't know about it
            my $port = $po->getOtherEndPort()->toTripleString();         
1526 1527 1528 1529 1530 1531
            
	    ${$stats{$port}}[$i] = $value;
	}
	$i++;
    }

1532
    return map [convertPortFromString($_),@{$stats{$_}}], sort {tbsort($a,$b)} keys %stats;
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542
}

#
# Used to flush FDB entries easily
#
# usage: resetVlanIfOnTrunk(self, modport, vlan)
#
sub resetVlanIfOnTrunk($$$) {
    my ($self, $modport, $vlan) = @_;
    my ($ifIndex) = $self->convertPortFormat($PORT_FORMAT_IFINDEX,$modport);
1543 1544
    return -1
	if (!$ifIndex);
1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577
    my $vlan_ports = $self->get1($egressOID, $vlan);
    if (testPortSet($vlan_ports, $ifIndex - 1)) {
	$self->setVlansOnTrunk($modport,0,$vlan);
	$self->setVlansOnTrunk($modport,1,$vlan);
    }
    return 0;
}

#
# Get the ifindex for an EtherChannel (trunk given as a list of ports)
#
# usage: getChannelIfIndex(self, ports)
#        Returns: undef if more than one port is given, and no channel is found
#           an ifindex if a channel is found and/or only one port is given
#
# N.B. by Sklower - cisco's use this to put vlans on multiwire trunks;
# it gets called from _stack.pm
#
# HP's also require a different ifindex for putting a vlan on a multiwire
# trunk from the individual ifindex from any constituent port.
#
# although Rob Ricci's vision is that this would only get called when putting
# vlans on multi-wire interswitch trunks and the check would happen in
# _stack, it is 1.) possible to use snmpit -i Switch <mod>/<port> to do
# maintenance functions of vlans and so you should check for each port
# any way, and 2.) the check is cheap and can be done in convertPortFormat.
#
sub getChannelIfIndex($@) {
    my $self = shift;
    my @ports = @_;
    my @ifIndexes = $self->convertPortFormat($PORT_FORMAT_IFINDEX,@ports);
    my $ifindex = undef;

1578 1579 1580
    return undef
	if (! @ifIndexes);

1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605
    #
    # Try to get a channel number for each one of the ports in turn - we'll
    # take the first one we get
    #
    foreach my $port (@ifIndexes) {
        if ($port) { $ifindex = $port; last; }
    }
    return $ifindex;
}


#
# Enable, or disable,  port on a trunk
#
# usage: setVlansOnTrunk(self, modport, value, vlan_numbers)
#        modport: module.port of the trunk to operate on
#        value: 0 to disallow the VLAN on the trunk, 1 to allow it
#	 vlan_numbers: An array of 802.1Q VLAN numbers to operate on
#        Returns 1 on success, 0 otherwise
#
sub setVlansOnTrunk($$$$) {
    my ($self, $modport, $value, @vlan_numbers) = @_;
    my ($RetVal);
    my $errors = 0;
    my $id = $self->{NAME} . "::setVlansOnTrunk";
1606
    my $vlancount = 0;
1607 1608

    my @dualPorts = $self->portSetToList($self->get1($forbidOID,1));
1609
    my ($ifIndex) = $self->convertPortFormat($PORT_FORMAT_IFINDEX,$modport);
1610 1611
    return 0
	if (!$ifIndex);
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623

    #
    # Some error checking
    #
    if (($value != 1) && ($value != 0)) {
	warn "Invalid value $value passed to setVlansOnTrunk\n";
	return 0;
    }
    if (grep(/^1$/,@vlan_numbers)) {
	warn "VLAN 1 passed to setVlansOnTrunk\n";
	return 0;
    }
1624

1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
    #
    # If doing a remove, we need to know if this is the last vlan
    # on the port. If so, have to add it to the default vlan before
    # it can be removed. 
    #
    if (!$value) {
	#
	# Walk the tree for the VLAN members. We do not really care
	# what the vlans are, just the total number of vlans.
	#
	my ($rows) = $self->{SESS}->bulkwalk(0,32,"dot1qVlanStaticEgressPorts");
	foreach my $rowref (@$rows) {
	    my (undef,undef,$stuff) = @$rowref;
	    my @portlist = $self->portSetToList($stuff);
	    
	    foreach my $idx (@portlist) {
		if ($idx == $ifIndex) {
		    $vlancount++;
		}
	    }
	}
    }
1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658

    #
    # Make sure ostensible trunk is either trunk or dual mode
    #
    my $tagOnly = $self->get1($aftOID,$ifIndex);
    if (($tagOnly ne "admitOnlyVlanTagged") &&
			 $self->not_in($ifIndex, @dualPorts)) {
	warn "$id: port $modport is normal port, " .
		"refusing to add vlan(s) @vlan_numbers\n";
	return 0;
    }

1659 1660 1661 1662 1663 1664
    #
    # If we are in dual mode, remember the current native VLAN so that we
    # don't accidentally tag it when we update the VLAN below.
    #
    my $pvid;
    if ($tagOnly ne "admitOnlyVlanTagged") {
1665
	# 
1666 1667
	$pvid = $self->get1("dot1qPvid", $ifIndex);
    }
1668
    $self->debug("$id: pvid=" . $self->get1("dot1qPvid", $ifIndex) .
1669 1670
		 ", value=$value, ifIndex=$ifIndex\n");

1671
    foreach my $vlan_number (@vlan_numbers) {
1672 1673 1674 1675 1676 1677
	my $untag = 0;

	if (defined($pvid) && $pvid == $vlan_number) {
	    warn "$id: not tagging VLAN $vlan_number on port $modport ($ifIndex)\n";
	    $untag = 1;
	}
1678 1679 1680 1681 1682 1683

	#
	# Not allowed to remove the last vlan, so add the default
	# vlan to the port before removing. 
	#
	if (!$value && $vlancount == 1) {
1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694
	    if ($untag) {
		#
		# Dual mode. Before we can add the default lan, we have to
		# switch it back to equal (remove the forbid flag). See
		# comment above about how we remember a port is in dual mode. 
		#
		$self->updateOneVlan(0,0,1,$vlan_number,$modport); #make tagged
		$self->updateOneVlan(0,0,0,1,$modport); # clear dual marker.
		# No longer need to untag below
		$untag = 0;
	    }
1695 1696 1697
	    $self->updateOneVlan(0,0,1,1,$modport);
	}
	$RetVal = $self->updateOneVlan(0,$untag,$value,$vlan_number,$modport);
1698 1699 1700
	if ($RetVal) {
	    $errors++;
	    warn "$id:couldn't " .  (($value == 1) ? "add" : "remove") .
1701
		" port $modport on vlan $vlan_number\n" ;
1702
	}
1703 1704
	$vlancount--
	    if (!$value);
1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722
    }
    return !$errors;
}

#
# Enable trunking on a port
#
# usage: enablePortTrunking2(self, modport, nativevlan, equaltrunking[, drop])
#        modport: module.port of the trunk to operate on
#        nativevlan: VLAN number of the native VLAN for this trunk
#	 equaltrunk: don't do dual mode; tag PVID also.
#	 exclude: need to choose something other than this, which actually
#        is the current PVID for this port.
#        Returns 1 on success, 0 otherwise
#
sub enablePortTrunking2($$$$) {
    my ($self,$port,$native_vlan,$equaltrunking) = @_;
    my ($ifIndex) = $self->convertPortFormat($PORT_FORMAT_IFINDEX,$port);
1723 1724
    return 0
	if (!$ifIndex);
1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
    my $id = $self->{NAME} .
		"::enablePortTrunking($port,$native_vlan,$equaltrunking)";
    my ($defLists, $rv);
		
    if ((!$equaltrunking) && (!defined($native_vlan) || ($native_vlan <= 1))) {
	warn "$id: inappropriate or missing PVID for trunk\n";
	return 0;
    }
    #
    # Deal with already trunked ports here, so as to not disrupt traffic
    #
    my $tagOnly = $self->get1($aftOID,$ifIndex);
    my $dualPorts = mirvPortSet($self->get1($forbidOID, 1)); # array
    my $pvid = $self->get1("dot1qPvid", $ifIndex);
    if ($tagOnly eq "admitOnlyVlanTagged") {
	if ($equaltrunking) {
	    # We've been called redundantly, so just add the vlan
	    return 1 if ($native_vlan eq "1");
	    # the following enables empty trunks and drops vlan 1 from them;
	    return ! $self->setPortVlan($native_vlan, $port);
	} else {
	    # update to dual mode
	    return (!$self->updateOneVlan(0, 1, 1, $native_vlan, $port)) # untag
		    && (!$self->updateOneVlan(1, 0, 0, 1, $port)); # mark
	}
    } elsif (@$dualPorts[$ifIndex-1]) {
	if ($equaltrunking) {
	    $rv = $self->updateOneVlan(0, 0, 0, 1, $port) || # clear marker
		$self->updateOneVlan(0, 0, 1, $pvid, $port) || # make untagged
		(($native_vlan ne "$pvid") &&
		    $self->updateOneVlan(0, 0, 1, $native_vlan, $port));
	    return !$rv;
	}
	return 1 if ($native_vlan eq "$pvid"); # port already member
	$self->updateOneVlan(0, 0, 1, $pvid, $port); # make pvid tagged
	$self->updateOneVlan(0, 1, 1, $native_vlan, $port); # make untagged
    } elsif ($native_vlan ne "$pvid") {
	warn "$id: Unable to add Trunk to native VLAN\n"
	    if $self->setPortVlan($native_vlan, $port);
    }
    #
    # Set port type apropriately.
    #
    if ($equaltrunking) {
	$rv = $self->updateOneVlan(0, 0, 1, $native_vlan, $port); # untag
    } else {
	$rv = $self->updateOneVlan(1, 0, 0, 1, $port); # mark dual
    }
    return  !$rv;
}

#
# Internal helper for trunking
#
sub otherTrunkedVlans($$$)
{
    my ($self, $portIndex, $pvid) = @_;
    my @others;
    #
    # we have to walk all of the blasted vlans to find out
    # which ones have this port as a member.
    #
    my ($rows) = $self->{SESS}->bulkwalk(0,32, [$egressOID]);
    foreach my $rowref (@$rows) {
	my ($ignored_name, $vnum, $portset) = @$rowref;
        push @others, $vnum
	    if (testPortSet($portset, $portIndex - 1) && ($vnum ne "$pvid"));
    }
    return @others;
}

#
# Disable trunking on a port
#
# usage: disablePortTrunking(self, modport)
#        Returns 1 on success, 0 otherwise
#
sub disablePortTrunking($$) {
    my ($self, $port) = @_;
    my $id = $self->{NAME} . "::disablePortTrunking($port)";

    my ($portIndex) = $self->convertPortFormat($PORT_FORMAT_IFINDEX,$port);
1807 1808
    return 0
	if (!$portIndex);
1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879
    my $native_vlan = $self->get1("dot1qPvid",$portIndex) || 1;
    my @remvlans = $self->otherTrunkedVlans($portIndex, $native_vlan);

    if ($native_vlan eq "1") {
	$self->updateOneVlan(0, 1, 1, 1, $port); # make untagged
	warn "$id: Unable to disable former equaltrunk\n"
	    if ($self->portControl("disable",$port));
    } else {
	$self->updateOneVlan(0, 0, 0, 1, $port); # clear marker
	$self->updateOneVlan(0, 1, 1, $native_vlan, $port); # make untagged;
    }
    foreach my $vlan_number (@remvlans) {
	warn "$id: Unable to remove VLAN $vlan_number\n"
	   if $self->delPortVlan($vlan_number, $portIndex);
    }
    return 1;
}

my %blade_sizes = ( 
   hpSwitchJ8697A => 24, # hp5406zl
   hpSwitchJ8698A => 24, # hp5412zl
   hpSwitchJ8770A => 24, # hp4204
   hpSwitchJ8773A => 24 # hp4208
);

#
# Reads the IfIndex table from the switch, for SNMP functions that use 
# IfIndex rather than the module.port style. Fills out the objects IFINDEX
# members,
#
# usage: readifIndex(self)
#        returns nothing but sets the instance variable IFINDEX.
#
# TODO: XXXXXXXXXXXXXXXXXXXXXXX - the 288 is a crock; 
# for some reason doing an swalk of ifType returns 161 instead of
# "ieee8023adLag"; we should walk ifType look for the least ifIndex of
# that type and walk hpSwitchPortTrunkType looking for the least lacpTrk
# to figure out the offset.

sub readifIndex($) {
    my $self = shift;
    my ($maxport, $maxtrunk, $name, $ifindex, $iidoid, $port, $mod, $j) = (0,0);
    $self->debug($self->{NAME} . "::readifIndex:\n", 2);

    my $bladesize = $blade_sizes{$self->{HPTYPE}};

    my ($rows) = snmpitBulkwalkFatal($self->{SESS}, ["hpSwitchPortTrunkGroup"]);
    my $t_off = $self->{TRUNKOFFSET} = 288;

    foreach my $rowref (@$rows) {
	($name,$ifindex,$iidoid) = @$rowref;
	$self->debug("got $name, $ifindex, iidoid $iidoid\n", 2);
	$self->{TRUNKINDEX}{$ifindex} = $iidoid;
	if ($iidoid) { push @{$self->{TRUNKS}{$iidoid}}, $ifindex; }
	if ($ifindex > $maxport) { $maxport = $ifindex;}
	if ($iidoid > $maxtrunk) { $maxtrunk = $iidoid;}
    }
    while (($ifindex, $iidoid) = each %{$self->{TRUNKINDEX}}) {
	if (defined($bladesize)) {
	    $j = $ifindex - 1;
	    $port = 1 + ($j % $bladesize);
	    $mod = 1 + int ($j / $bladesize);
	} else
	    { $mod = 1; $port = $ifindex; }
	my $modport = "$mod.$port";
	my $portindex = $iidoid ? ($t_off + $iidoid) : $ifindex ;
	$self->{IFINDEX}{$modport} = $portindex;
	$self->{IFINDEX}{$ifindex} = $modport;
    }
    foreach $j (keys %{$self->{TRUNKS}}) {
	$ifindex = $j + $t_off;
1880 1881 1882
	if (my $lref = $self->{TRUNKS}{$j}) {
	    $port = $self->{IFINDEX}{@$lref[0]}; #actually modport
	} else {  $port = "1." . $ifindex; } # the else should never happen
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905
	$self->{IFINDEX}{$ifindex} = $port;
	$self->{IFINDEX}{$port} = $ifindex;
	$self->{TRUNKINDEX}{$ifindex} = 0; # simplifies convertPortIndex
    }
    $self->{MAXPORT} = $maxport;
    $self->{MAXTRUNK} = $maxtrunk;
}


#
# Read a set of values for all given ports.
#
# usage: getFields(self,ports,oids)
#        ports: Reference to a list of ports, in any allowable port format
#        oids: A list of OIDs to reteive values for
#
# On sucess, returns a two-dimensional list indexed by port,oid
#
sub getFields($$$) {
    my $self = shift;
    my ($ports,$oids) = @_;

    my @ifindicies = $self->convertPortFormat($PORT_FORMAT_IFINDEX,@$ports);
1906 1907
    return ()
	if (! @ifindicies);
1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
    my @oids = @$oids;


    #
    # Put together an SNMP::VarList for all the values we want to get
    #
    my @vars = ();
    foreach my $ifindex (@ifindicies) {
	foreach my $oid (@oids) {
	    push @vars, ["$oid","$ifindex"];
	}
    }

    #
    # If we try to ask for too many things at once, we get back really bogus
    # errors. So, we limit ourselves to an arbitrary number that, by
    # experimentation, works.
    #
    my $maxvars = 16;
    my @results = ();
    while (@vars) {
	my $varList = new SNMP::VarList(splice(@vars,0,$maxvars));
	my $rv = $self->{SESS}->get($varList);
	push @results, @$varList;
    }
	    
    #
    # Build up the two-dimensional list for returning
    #
    my @return = ();
    foreach my $i (0 .. $#ifindicies) {
	foreach my $j (0 .. $#oids) {
	    my $val = shift @results;
	    $return[$i][$j] = $$val[2];
	}
    }

    return @return;
}

#
# Prints out a debugging message, but only if debugging is on. If a level is
# given, the debuglevel must be >= that level for the message to print. If
# the level is omitted, 1 is assumed
#
# Usage: debug($self, $message, $level)
#
sub debug($$;$) {
    my $self = shift;
    my $string = shift;
    my $debuglevel = shift;
    if (!(defined $debuglevel)) {
	$debuglevel = 1;
    }
    if ($self->{DEBUG} >= $debuglevel) {
	print STDERR $string;
    }
}

my $lock_held = 0;

sub lock($) {
    my $self = shift;
    my $token = "snmpit_" . $self->{NAME};
    if ($lock_held == 0) {
	my $old_umask = umask(0);
	die if (TBScriptLock($token,0,1800) != TBSCRIPTLOCK_OKAY());
	umask($old_umask);
    }
    $lock_held = 1;
}

sub unlock($) {
	if ($lock_held == 1) { TBScriptUnlock();}
	$lock_held = 0;
}

#
# Enable Openflow
#
sub enableOpenflow($$) {
    my $self = shift;
    my $vlan = shift;
    my $RetVal;
    
    $RetVal = $self->set([$ofEnableOID, $vlan, 1, "INTEGER"]);
    if (!defined($RetVal)) {
	warn "ERROR: Unable to enable Openflow on VLAN $vlan\n";
	return 0;
    }
    return 1;
}

#
# Disable Openflow
#
sub disableOpenflow($$) {
    my $self = shift;
    my $vlan = shift;
    my $RetVal;
    
    $RetVal = $self->set([$ofEnableOID, $vlan, 2, "INTEGER"]);
    if (!defined($RetVal)) {
	warn "ERROR: Unable to disable Openflow on VLAN $vlan\n";
	return 0;
    }
    return 1;
}

#
# Set controller
#
2020
sub setOpenflowController($$$$) {
2021 2022 2023
    my $self = shift;
    my $vlan = shift;
    my $controller = shift;
2024
    my $option = shift;
2025 2026 2027 2028 2029 2030 2031
    my $RetVal;
    
    $RetVal = $self->set([$ofControllerOID, $vlan, $controller, "OCTETSTR"]);
    if (!defined($RetVal)) {
	warn "ERROR: Unable to set controller on VLAN $vlan\n";
	return 0;
    }
2032 2033 2034 2035 2036 2037 2038 2039
    if (defined($option) && $option eq "fail-secure") {
	$RetVal = $self->set([$ofFailModeOID, $vlan, 1, "INTEGER"]);
	if (!defined($RetVal)) {
	    warn "ERROR: Unable to set controller option $option ".
		"on VLAN $vlan\n";
	    return 0;
	}
    }
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    return 1;
}

#
# Set listener
#
sub setOpenflowListener($$$) {
    my $self = shift;
    my $vlan = shift;
    my $listener = shift;
    my $RetVal;
    
    $RetVal = $self->set([$ofListenerOID, $vlan, $listener, "OCTETSTR"]);
    if (!defined($RetVal)) {
	warn "ERROR: Unable to set listener on VLAN $vlan\n";
	return 0;
    }
    return 1;
}

#
# Get used listener ports
#
sub getUsedOpenflowListenerPorts($) {
    my $self = shift;
    my %ports = ();

    my $listener = [$ofListenerOID,0];

    #
    # Get all listeners and gather their ports
    #
    my ($varname, $vlan, $connstr);
    $self->{SESS}->getnext($listener);
    do {
	($varname, $vlan, $connstr) = @{$listener};
	$self->debug("listener: $varname $vlan $connstr \n");
	if ($varname =~ /$ofListenerVarNameMarker/) {
	    my ($proto, $port) = split(":", $connstr);
	    if (defined($port)){
                $ports{$port} = 1;
            }
	    
	    #
	    # the SNMP session with MIB gives varname with strings not numbers, but
	    # the string names can't be used to get the next entry in table! So we
	    # have to use the numbered OID. To get the next entry, we must
	    # append the current instance ID, which is the last section of the dotted
	    # varname, to the numbered OID.
	    #
	    my $lastdot = rindex($varname, '.');
	    $listener->[0] = $ofListenerOID.".".substr($varname, $lastdot+1);
	    $self->{SESS}->getnext($listener);
	}	
    } while ($varname =~ /$ofListenerVarNameMarker/);

    return %ports;
}


#
# Check if Openflow is supported on this switch
#
sub isOpenflowSupported($) {
    my $self = shift;
    my $ret;
    
    $ret = $self->get1($ofSupportOID, 0);
    if (defined($ret)) {
	return 1;
    } else {
	return 0;
    }
}

# End with true
1;