403 lines
9.4 KiB
Perl
403 lines
9.4 KiB
Perl
# SNMP::Info::Layer2::Airespace
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#
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# Copyright (c) 2008 Eric Miller
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the University of California, Santa Cruz nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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package SNMP::Info::Layer2::Airespace;
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use strict;
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use Exporter;
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use SNMP::Info::Bridge;
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use SNMP::Info::CDP;
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use SNMP::Info::Airespace;
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@SNMP::Info::Layer2::Airespace::ISA
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= qw/SNMP::Info::Airespace SNMP::Info::CDP SNMP::Info::Bridge Exporter/;
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@SNMP::Info::Layer2::Airespace::EXPORT_OK = qw//;
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use vars qw/$VERSION %FUNCS %GLOBALS %MIBS %MUNGE/;
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$VERSION = '3.49';
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%MIBS = (
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%SNMP::Info::MIBS, %SNMP::Info::Bridge::MIBS,
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%SNMP::Info::CDP::MIBS, %SNMP::Info::Airespace::MIBS,
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'CISCO-LWAPP-DOT11-CLIENT-MIB' => 'cldcClientCurrentTxRateSet',
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'CISCO-LWAPP-DOT11-MIB' => 'cldHtDot11nChannelBandwidth',
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'CISCO-LWAPP-AP-MIB' => 'cLApIfMacAddress',
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);
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%GLOBALS = (
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%SNMP::Info::GLOBALS, %SNMP::Info::Bridge::GLOBALS,
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%SNMP::Info::CDP::GLOBALS, %SNMP::Info::Airespace::GLOBALS,
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);
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%FUNCS = (
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%SNMP::Info::FUNCS, %SNMP::Info::Bridge::FUNCS,
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%SNMP::Info::CDP::FUNCS, %SNMP::Info::Airespace::FUNCS,
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# CISCO-LWAPP-AP-MIB::cLApTable
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'ap_if_mac' => 'cLApIfMacAddress',
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# CISCO-LWAPP-DOT11-CLIENT-MIB::cldcClientTable
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'client_txrate' => 'cldcClientCurrentTxRateSet',
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'cd11_proto' => 'cldcClientProtocol',
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'cd11_rateset' => 'cldcClientDataRateSet',
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# CISCO-LWAPP-DOT11-MIB::cldHtMacOperationsTable
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'cd11n_ch_bw' => 'cldHtDot11nChannelBandwidth',
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);
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%MUNGE = (
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%SNMP::Info::MUNGE, %SNMP::Info::Bridge::MUNGE,
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%SNMP::Info::CDP::MUNGE, %SNMP::Info::Airespace::MUNGE,
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'ap_if_mac' => \&SNMP::Info::munge_mac,
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'cd11n_ch_bw' => \&munge_cd11n_ch_bw,
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'cd11_rateset' => \&munge_cd11_rateset,
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'cd11_proto' => \&munge_cd11_proto,
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);
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# 802.11n Modulation and Coding Scheme (MCS)
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my $mcs_index = {
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20 => {
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m0 => '6.5',
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m1 => '13',
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m2 => '19.5',
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m3 => '26',
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m4 => '39',
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m5 => '52',
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m6 => '58.5',
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m7 => '65',
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m8 => '13',
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m9 => '26',
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m10 => '39',
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m11 => '52',
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m12 => '78',
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m13 => '104',
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m14 => '117',
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m15 => '130',
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m16 => '19.5',
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m17 => '39',
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m18 => '58.5',
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m19 => '78',
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m20 => '117',
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m21 => '156',
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m22 => '175.5',
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m23 => '195',
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# This is a cheat for 802.11a bonded
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m108 => '108',
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},
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40 => {
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m0 => '15',
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m1 => '30',
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m2 => '45',
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m3 => '60',
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m4 => '90',
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m5 => '120',
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m6 => '135',
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m7 => '157.5',
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m8 => '30',
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m9 => '60',
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m10 => '90',
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m11 => '120',
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m12 => '180',
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m13 => '240',
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m14 => '270',
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m15 => '300',
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m16 => '45',
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m17 => '90',
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m18 => '135',
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m19 => '180',
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m20 => '270',
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m21 => '360',
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m22 => '405',
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m23 => '450',
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}
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};
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sub os {
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return 'cisco';
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}
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sub vendor {
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return 'cisco';
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}
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sub model {
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my $airespace = shift;
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my $model = $airespace->airespace_model();
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return unless defined $model;
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return $model;
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}
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sub cd11_mac {
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my $airespace = shift;
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my $cd11_sigstrength = $airespace->cd11_sigstrength();
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my $ret = {};
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foreach my $idx ( keys %$cd11_sigstrength ) {
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my $mac = join( ":", map { sprintf "%02x", $_ } split /\./, $idx );
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$ret->{$idx} = $mac
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}
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return $ret;
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}
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sub cd11_txrate {
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my $airespace = shift;
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my $rates = $airespace->client_txrate() || {};
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my $protos = $airespace->cd11_proto() || {};
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my $bws = $airespace->cd11n_ch_bw() || {};
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my $cd11_txrate = {};
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foreach my $idx ( keys %$rates ) {
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my $rate = $rates->{$idx} || '0.0';
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if ( $rate =~ /^\d+/ ) {
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$cd11_txrate->{$idx} = [ $rate * 1.0 ];
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}
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elsif ( $rate =~ /^m/ ) {
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my $band = $protos->{$idx};
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my $bw = $bws->{$band};
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# FIXME throw some kind of error if we get an index/rate that we haven't implemented yet? Now we simply return "0.0"...
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$cd11_txrate->{$idx} = [ $mcs_index->{$bw}->{$rate} || '0.0' ];
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}
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else {
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$cd11_txrate->{$idx} = [ $rate ];
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}
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}
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return $cd11_txrate;
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}
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sub munge_cd11n_ch_bw {
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my $bw = shift;
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if ( $bw =~ /forty/ ) {
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return 40;
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}
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return 20;
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}
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sub munge_cd11_proto {
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my $bw = shift;
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return 2 if ( $bw eq 'dot11n5' );
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return 1;
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}
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sub munge_cd11_rateset {
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my $rates = shift;
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return [ map { $_ * 1.0 } split /,/, $rates ];
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}
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# Cisco provides the AP's Ethernet MAC via
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# CISCO-LWAPP-AP-MIB::cLApIfMacAddress this was not available pre-Cisco
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sub i_mac {
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my $airespace = shift;
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my $partial = shift;
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my $i_index = $airespace->i_index($partial) || {};
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my $ap_mac = $airespace->ap_if_mac() || {};
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my $i_mac = $airespace->SUPER::i_mac() || {};
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foreach my $iid ( keys %$i_index ) {
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my $index = $i_index->{$iid};
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next unless defined $index;
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if ( $index =~ /(?:[0-9A-Fa-f]{2}:){5}[0-9A-Fa-f]{2}/ ) {
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$index =~ s/\.\d+$//;
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next unless defined $index;
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my $sys_mac = join( '.', map { hex($_) } split( ':', $index ) );
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my $mac = $ap_mac->{$sys_mac};
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$i_mac->{$iid} = $mac;
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}
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}
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return $i_mac;
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}
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1;
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__END__
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=head1 NAME
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SNMP::Info::Layer2::Airespace - SNMP Interface to Cisco (Airespace) Wireless
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Controllers
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=head1 AUTHOR
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Eric Miller
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=head1 SYNOPSIS
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#Let SNMP::Info determine the correct subclass for you.
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my $airespace = new SNMP::Info(
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AutoSpecify => 1,
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Debug => 1,
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DestHost => 'myswitch',
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Community => 'public',
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Version => 2
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)
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or die "Can't connect to DestHost.\n";
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my $class = $airespace->class();
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print " Using device sub class : $class\n";
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=head1 DESCRIPTION
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Provides abstraction to the configuration information obtainable from
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Cisco (Airespace) Wireless Controllers through SNMP.
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For speed or debugging purposes you can call the subclass directly, but not
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after determining a more specific class using the method above.
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my $airespace = new SNMP::Info::Layer2::Airespace(...);
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=head2 Inherited Classes
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=over
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=item SNMP::Info::Airespace
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=item SNMP::Info::CDP
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=item SNMP::Info::Bridge
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=back
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=head2 Required MIBs
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=over
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=item F<CISCO-LWAPP-DOT11-CLIENT-MIB>
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=item F<CISCO-LWAPP-DOT11-MIB>
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=item F<CISCO-LWAPP-AP-MIB>
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=item Inherited Classes' MIBs
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See L<SNMP::Info::Airespace/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CDP/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::Bridge/"Required MIBs"> for its own MIB requirements.
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=back
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=head1 GLOBALS
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These are methods that return scalar value from SNMP
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=over
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=item $airespace->vendor()
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Returns 'cisco'
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=item $airespace->os()
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Returns 'cisco'
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=item $airespace->model()
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(C<agentInventoryMachineModel>)
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=back
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=head2 Global Methods imported from SNMP::Info::Airespace
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See documentation in L<SNMP::Info::Airespace/"GLOBALS"> for details.
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=head2 Global Methods imported from SNMP::Info::CDP
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See documentation in L<SNMP::Info::CDP/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::Bridge
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See documentation in L<SNMP::Info::Bridge/"GLOBALS"> for details.
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=head1 TABLE METHODS
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These are methods that return tables of information in the form of a reference
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to a hash.
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=over
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=item cd11_mac()
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Returns client radio interface MAC addresses.
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=item cd11_txrate()
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Returns client transmission speed in Mbs.
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=back
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=head2 Overrides
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=over
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=item i_mac()
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Adds AP Ethernet MAC as port mac on radio ports from C<CISCO-LWAPP-AP-MIB>.
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=back
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=head2 Table Methods imported from SNMP::Info::Airespace
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See documentation in L<SNMP::Info::Airespace/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CDP
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See documentation in L<SNMP::Info::CDP/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::Bridge
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See documentation in L<SNMP::Info::Bridge/"TABLE METHODS"> for details.
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=head1 Data Munging Callback Subroutines
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=over
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=item munge_cd11n_ch_bw()
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Converts 802.11n channel bandwidth to either 20 or 40.
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=item munge_cd11_proto()
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Converts 802.11n 2.4Ghz to 1 and 5Ghz to 2 to correspond to the
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(C<cldHtMacOperationsTable>) index.
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=item munge_cd11_rateset()
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Converts rate set to array.
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=back
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=cut
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