| Current File : //usr/bin/snmp-bridge-mib |
#!/usr/bin/perl
#
# Copyright (c) IBM Corp. 2009, 2010, All Rights Reserved
#
# Author(s): Vasileios Pappas <vpappas@us.ibm.com>
# Jens Osterkamp <jens@linux.vnet.ibm.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
use NetSNMP::OID (':all');
use NetSNMP::ASN (':all');
use NetSNMP::agent (':all');
sub STP_PROP_VALUE() { 0x01}
sub STP_PROP_FILE() { 0x02}
sub STP_PROP_DEC() { 0x04}
sub STP_PROP_HEX() { 0x08}
sub FDB_STATUS_OTHER { 1 }
sub FDB_STATUS_INVALID { 2 }
sub FDB_STATUS_LEARNED { 3 }
sub FDB_STATUS_SELF { 4 }
sub FDB_STATUS_MGMT { 5 }
my %oid_value;
my %oid_type;
my %oid_next;
my (%indexes, %interfaces, %macs, %ages, %locals, %vlans, %tagged);
my $oid;
$subagent=0;
my $netdir="/sys/class/net/";
my $targetbridge;
$cache_timout=60;
$last_populated=0;
my $regoid = ".1.3.6.1.2.1.17";
# are we running embedded ? If not, register as subagent
if (!$agent) {
$agent = new NetSNMP::agent('Name' => 'dot1qbridge',
'AgentX' => 1);
$subagent = 1;
if ( $#ARGV != 0) {
usage($0);
exit();
}
$targetbridge = $ARGV[0];
} else {
if (!defined($bridge)) {
usage($0);
exit();
}
$targetbridge = $bridge;
}
$agent->register("dot1qbridge", ".1.3.6.1.2.1.17", \&request_handler) or die "registration of handler failed !\n";
if ($subagent) {
# register handler for graceful shutdown
$SIG{'INT'} = \&shutdown;
$SIG{'QUIT'} = \&shutdown;
$running = 1;
while($running) {
$agent->agent_check_and_process(1);
}
$agent->shutdown();
}
sub usage {
my $name = shift;
if ($subagent) {
print $name."\n\n";
print "usage: \t$name <bridge> start snmp bridge module".
" for bridge <bridge>\n\n";
print "arguments: bridge name of the Linux bridge".
" which you want to provide info via snmp for.\n\n";
} else {
print 'usage in snmpd.conf: perl $bridge="br0"; perl do <path to $name>\n';
}
print "number of arguments given $#ARGV\n\n";
}
sub request_handler {
my ($handler, $registration_info, $request_info, $requests)=@_;
my $request;
populate_mib($targetbridge);
for($request = $requests; $request; $request = $request->next()) {
if($request_info->getMode() == MODE_GET) {
mode_get($request);
} elsif($request_info->getMode() == MODE_GETNEXT) {
mode_get_next($request);
} else {
print STDERR "mode not implemented.\n";
}
}
}
sub mode_get{
my ($request)=@_;
my $oid=$request->getOID();
$SNMP::use_numeric = 1;
my $noid=SNMP::translateObj($oid);
reply($request, $noid) if (exists $oid_value{$noid});
}
sub find_next{
my ($noid) = @_;
my $nextoid = $oid_next{$noid};
if(!defined($nextoid) || !defined($oid_value{$nextoid})) {
# find the lowest OID whis is higher than $noid
$prev = ".1.3.6.1.2.1.18";
$prev_oid = new NetSNMP::OID($prev);
$noid_oid = new NetSNMP::OID($noid);
#print "looking for next of $noid\n";
for my $candidate (keys %oid_value) {
#print "evaluating $candidate\n";
$candidate_oid = new NetSNMP::OID($candidate);
if ($noid_oid < $candidate_oid && $prev_oid > $candidate_oid) {
#print "found candidate $candidate\n";
$prev = $candidate;
$prev_oid = $candidate_oid;
}
}
if ($prev eq ".1.3.6.1.2.1.18") {
return; # no OID higher than $noid found
}
$nextoid = $prev;
}
return $nextoid;
}
sub mode_get_next{
my ($request)=@_;
my $oid=$request->getOID();
$SNMP::use_numeric = 1;
my $noid=SNMP::translateObj($oid);
my $nextoid = find_next($noid);
#print "found $nextoid\n";
if(defined($nextoid)) {
my $type = $oid_type{$nextoid};
my $value = $oid_value{$nextoid};
if (defined($type) and defined($value)) {
reply($request, $nextoid);
}
}
}
sub reply{
my ($request, $oid)=@_;
my $type=$oid_type{$oid};
my $value=$oid_value{$oid};
$request->setOID(new NetSNMP::OID($oid));
$request->setValue($type, $value);
}
# Populated MIB OID
#
## dot1dBasePort: 1.3.6.1.2.1.17.1.4.1.1.<dot1dBasePort>
# INTEGER32
#
# dot1dBasePortIfIndex: 1.3.6.1.2.1.17.1.4.1.2.<dot1dBasePort>
# INTEGER32
#
# dot1dStp*: 1.3.6.1.2.1.17.2.<1-14>
# INTEGER, OCTET STRING
#
# dot1dTpFdbAddress: 1.3.6.1.2.1.17.4.3.1.1.<dot1dTpFdbAddress>
# OCTET STRING (SIZE (6))
#
# dot1dTpFdbPort: 1.3.6.1.2.1.17.4.3.1.2.<dot1dTpFdbAddress>
# INTEGER32
#
# dot1dTpFdbStatus: 1.3.6.1.2.1.17.4.3.1.3.<dot1dTpFdbAddress>
# INTEGER
# 1 : other
# 2 : invalid
# 3 : learned
# 4 : self
# 5 : mgmt
#
sub populate_mib {
my $now;
my $bridge = shift;
my $seconds_passed;
$ports=0;
$oid="";
$now=time();
$seconds_passed=$now-$last_populated;
return if($seconds_passed <= $cache_timout);
$last_populated=$now;
%oid_value=();
%oid_type=();
%oid_next=();
%indexes=();
%interfaces=();
%macs=();
%ages=();
%locals=();
%vlans=();
%tagged=();
# first populated oid
$oid_next{".1.3.6.1.2.1.17"}=".1.3.6.1.2.1.17.1.1";
createbaseinfo($bridge);
readindexes($bridge);
readforwards($bridge);
readvlans($bridge);
createports($bridge);
stpproperties($bridge);
stpportproperties($bridge);
dot1dTpproperties();
my $prevoid = $oid;
my $curroid = createmacs($bridge);
$oid_next{$prevoid} = $curroid;
portproperties($bridge);
dot1qbase($bridge);
dot1qfdb($bridge);
dot1qcurrentvlans($bridge);
return 0;
}
sub findbridges()
{
my @bridges;
opendir(DIR, $netdir) or die "unable to open $netdir !\n";
while(my $br=readdir(DIR)){
next if $br eq ".";
next if $br eq "..";
next unless -d $netdir.$br."/bridge";
push @bridges, $br;
}
close(DIR);
return @bridges;
}
sub createbaseinfo()
{
my $bridge = shift;
$oid=".1.3.6.1.2.1.17.1.1";
$oid_value{$oid}=mac2hex(readfile($netdir.$bridge."/address", 0));
$oid_type{$oid}=ASN_OCTET_STR;
$oid_next{$oid}=".1.3.6.1.2.1.17.1.2";
opendir(DIR, $netdir.$bridge."/brif/") or die "Could not open ".$netdir.$bridge."brif !\n";
foreach $entry (readdir(DIR)) {
next if $entry eq ".";
next if $entry eq "..";
# only count non-vlan interfaces
next if $entry =~ /\.[0-9]*/;
$ports++;
}
closedir(DIR);
$oid=".1.3.6.1.2.1.17.1.2";
$oid_value{$oid}=$ports;
$oid_type{$oid}=ASN_INTEGER;
$oid_next{$oid}=".1.3.6.1.2.1.17.1.3";
$oid=".1.3.6.1.2.1.17.1.3";
$oid_value{$oid}="2"; # transparent only
$oid_type{$oid}=ASN_INTEGER;
$oid_next{$oid}=".1.3.6.1.2.1.17.1.4.1.1.1";
}
sub createmacs()
{
my $bridge = shift;
my $start_oid = $oid = ".1.3.6.1.2.1.17.4.3.1";
foreach my $mac (sort {$a cmp $b} keys %macs) {
my $mac_oid=mac2oid($mac);
unless(defined($first_mac_oid)){
$first_mac_oid=$mac_oid;
$oid_next{$oid.".1"}=$oid.".1".$mac_oid;
$oid_next{$oid.".2"}=$oid.".2".$mac_oid;
$oid_next{$oid.".3"}=$oid.".3".$mac_oid;
}
my $port=$macs{$mac}{$bridge};
my $baseport=$baseports{$bridge}{$port};
my $status=$locals{$mac}{$bridge};
my $age=$ages{$mac}{$bridge};
$oid_value{$oid.".1".$mac_oid}=mac2hex($mac);
$oid_type{$oid.".1".$mac_oid}=ASN_OCTET_STR;
if(defined($prv_mac_oid)){
$oid_next{$oid.".1".$prv_mac_oid}=
$oid.".1".$mac_oid;
}
$oid_value{$oid.".2".$mac_oid}=$baseport;
$oid_type{$oid.".2".$mac_oid}=ASN_INTEGER;
if(defined($prv_mac_oid)){
$oid_next{$oid.".2".$prv_mac_oid}=
$oid.".2".$mac_oid;
}
$oid_value{$oid.".3".$mac_oid}=$status;
$oid_type{$oid.".3".$mac_oid}=ASN_INTEGER;
if(defined($prv_mac_oid)){
$oid_next{$oid.".3".$prv_mac_oid}=
$oid.".3".$mac_oid;
}
$prv_mac_oid=$mac_oid;
}
if ($prv_mac_oid and $first_mac_oid) {
$oid_next{$oid.".1".$prv_mac_oid}=$oid.".2".$first_mac_oid;
$oid_next{$oid.".2".$prv_mac_oid}=$oid.".3".$first_mac_oid;
$oid_next{$oid.".3".$prv_mac_oid}=".1.3.6.1.2.1.17.4.4.1.1.1";
}
undef $prv_mac_oid;
undef $first_mac_oid;
return $start_oid.".1".$first_mac_oid;
}
# TODO: is this sequence complete ?
sub createports()
{
my $bridge = shift;
my ($baseport, $prev_baseport, $first_baseport);
$baseport=1;
my $oid= '.1.3.6.1.2.1.17.1.4.1';
foreach my $port (keys %{$interfaces{$bridge}}) {
unless(defined($first_baseport)){
$first_baseport=$baseport;
$oid_next{$oid.".1"}=$oid.".1.".$baseport;
$oid_next{$oid.".2"}=$oid.".2.".$baseport;
}
my $index=$indexes{$bridge}{$port};
$baseports{$bridge}{$port}=$baseport;
$oid_value{$oid.".1.".$baseport}=$baseport;
$oid_type{$oid.".1.".$baseport}=ASN_INTEGER;
if(defined($prv_baseport)){
$oid_next{$oid.".1.".$prv_baseport}=
$oid.".1.".$baseport;
}
$oid_value{$oid.".2.".$baseport}=$index;
$oid_type{$oid.".2.".$baseport}=ASN_INTEGER;
if(defined($prv_baseport)){
$oid_next{$oid.".2.".$prv_baseport}=
$oid.".2.".$baseport;
}
$prv_baseport=$baseport;
$baseport++;
}
if ( $prv_baseport and $first_baseport ) {
$oid_next{$oid.".1.".$prv_baseport}=$oid.".2.".$first_baseport;
$oid_next{$oid.".2.".$prv_baseport}=".1.3.6.1.2.1.17.2.1";
}
undef $prv_baseport;
undef $first_baseport;
}
sub stpproperties()
{
my $bridge = shift;
my $dir = $netdir.$bridge."/bridge/";
@stpprops = ( { oid => ".1.3.6.1.2.1.17.2.1",
flags => STP_PROP_VALUE,
value => "3",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.2" },
{ oid => ".1.3.6.1.2.1.17.2.2",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."priority",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.3" },
{ oid => ".1.3.6.1.2.1.17.2.3",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."topology_change_timer",
type => ASN_TIMETICKS,
nextoid => ".1.3.6.1.2.1.17.2.4" },
{ oid => ".1.3.6.1.2.1.17.2.4",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."topology_change",
type => ASN_COUNTER,
nextoid => ".1.3.6.1.2.1.17.2.5" },
{ oid => ".1.3.6.1.2.1.17.2.5",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."root_id",
type => ASN_OCTET_STR,
nextoid => ".1.3.6.1.2.1.17.2.6" },
{ oid => ".1.3.6.1.2.1.17.2.6",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."root_path_cost",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.7" },
{ oid => ".1.3.6.1.2.1.17.2.7",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."root_port",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.8" },
{ oid => ".1.3.6.1.2.1.17.2.8",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."max_age",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.9" },
{ oid => ".1.3.6.1.2.1.17.2.9",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."hello_time",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.11" },
# TODO ...17.2.10
{ oid => ".1.3.6.1.2.1.17.2.11",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."forward_delay",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.12" },
{ oid => ".1.3.6.1.2.1.17.2.12",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."max_age",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.13" },
{ oid => ".1.3.6.1.2.1.17.2.13",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."hello_time",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.14" },
{ oid => ".1.3.6.1.2.1.17.2.14",
flags => STP_PROP_FILE | STP_PROP_DEC,
value => $dir."forward_delay",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.2.15.1.1.1" },
);
for ($i=0; $i <= $#stpprops; $i++) {
my %props = %{$stpprops[$i]};
$oid = $props{'oid'};
if ( $props{'flags'} & STP_PROP_VALUE,) {
$oid_value{$oid} = $props{'value'};
}
if ( $props{'flags'} & STP_PROP_FILE,) {
$oid_value{$oid} =
readfile($props{'value'},
$props{'flags'});
}
$oid_type{$oid} = $props{'type'};
$oid_next{$oid} = $props{'nextoid'};
}
}
sub stpportproperties
{
my $bridge = shift;
my $brifdir = $netdir.$bridge."/brif/";
my ($baseport, $first_baseport, $prev_baseport);
$oid='.1.3.6.1.2.1.17.2.15.1';
foreach my $port (keys %{$interfaces{$bridge}}) {
$baseport = $baseports{$bridge}{$port};
unless(defined($first_baseport)){
$first_baseport=$baseport;
$oid_next{$oid.".1"}=$oid.".1.".$baseport;
$oid_next{$oid.".2"}=$oid.".2.".$baseport;
}
my $interface = $interfaces{$bridge}{$port};
my $ifdir = $brifdir.$interface;
# dot1dStpPort
$oid_value{$oid.".1.".$baseport}=$baseport;
$oid_type{$oid.".1.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".1.".$prev_baseport}=
$oid.".1.".$baseport;
}
# dot1dStpPortPriority
$oid_value{$oid.".2.".$baseport}=readfile($ifdir."/priority", 0);
$oid_type{$oid.".2.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".2.".$prev_baseport}=
$oid.".2.".$baseport;
}
# dot1dStpPortState
my @translation = (1, 3, 4, 5, 2);
my $state = readfile($ifdir."/state", 0);
$oid_value{$oid.".3.".$baseport}=$translation[$state];
$oid_type{$oid.".3.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".3.".$prev_baseport}=
$oid.".3.".$baseport;
}
# dot1dStpPortEnable
@translation = (2, 1, 1, 1, 1);
$oid_value{$oid.".4.".$baseport}=$translation[$state];
$oid_type{$oid.".4.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".4.".$prev_baseport}=
$oid.".4.".$baseport;
}
# dot1dStpPortPathCost
$oid_value{$oid.".5.".$baseport}=readfile($ifdir."/path_cost", 0);
$oid_type{$oid.".5.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".5.".$prev_baseport}=
$oid.".5.".$baseport;
}
# dot1dStpPortDesignatedRoot
$oid_value{$oid.".6.".$baseport}=readfile($ifdir."/designated_root", 0);
$oid_type{$oid.".6.".$baseport}=ASN_OCTET_STR;
if(defined($prev_baseport)){
$oid_next{$oid.".6.".$prev_baseport}=
$oid.".6.".$baseport;
}
# dot1dStpPortDesignatedCost
$oid_value{$oid.".7.".$baseport}=readfile($ifdir."/designated_cost", 0);
$oid_type{$oid.".7.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".7.".$prev_baseport}=
$oid.".7.".$baseport;
}
# dot1dStpPortDesignatedBridge
$oid_value{$oid.".8.".$baseport}=readfile($ifdir."/designated_bridge", 0);
$oid_type{$oid.".8.".$baseport}=ASN_OCTET_STR;
if(defined($prev_baseport)){
$oid_next{$oid.".8.".$prev_baseport}=
$oid.".8.".$baseport;
}
# dot1dStpPortDesignatedPort
$oid_value{$oid.".9.".$baseport}=readfile($ifdir."/designated_port", 0);
$oid_type{$oid.".9.".$baseport}=ASN_OCTET_STR;
if(defined($prev_baseport)){
$oid_next{$oid.".9.".$prev_baseport}=
$oid.".9.".$baseport;
}
# dot1dStpPortForwardTransitions (no value in bridge module)
# dot1dStpPortPathCost32
$oid_value{$oid.".11.".$baseport}=readfile($ifdir."/path_cost", 0);
$oid_type{$oid.".11.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".11.".$prev_baseport}=
$oid.".11.".$baseport;
}
$prev_baseport=$baseport;
}
if ( $prev_baseport and $first_baseport ) {
$oid_next{$oid.".1.".$prev_baseport}=$oid.".2.".$first_baseport;
$oid_next{$oid.".2.".$prev_baseport}=$oid.".3.".$first_baseport;
$oid_next{$oid.".3.".$prev_baseport}=$oid.".4.".$first_baseport;
$oid_next{$oid.".4.".$prev_baseport}=$oid.".5.".$first_baseport;
$oid_next{$oid.".5.".$prev_baseport}=$oid.".6.".$first_baseport;
$oid_next{$oid.".6.".$prev_baseport}=$oid.".7.".$first_baseport;
$oid_next{$oid.".7.".$prev_baseport}=$oid.".8.".$first_baseport;
$oid_next{$oid.".8.".$prev_baseport}=$oid.".9.".$first_baseport;
$oid_next{$oid.".9.".$prev_baseport}=$oid.".11.".$first_baseport;
$oid_next{$oid.".11.".$prev_baseport}=".1.3.6.1.2.1.17.4.1";
}
$oid = $oid.".11.".$prev_baseport;
undef $prev_baseport;
undef $first_baseport;
}
sub dot1dTpproperties()
{
@stpprops = ( { oid => ".1.3.6.1.2.1.17.4.1",
flags => STP_PROP_VALUE,
value => "0",
type => ASN_COUNTER,
nextoid => ".1.3.6.1.2.1.17.4.2" },
{ oid => ".1.3.6.1.2.1.17.4.2",
flags => STP_PROP_VALUE,
value => "300",
type => ASN_INTEGER,
nextoid => ".1.3.6.1.2.1.17.4.3" },
);
for ($i=0; $i <= $#stpprops; $i++) {
my %props = %{$stpprops[$i]};
$oid = $props{'oid'};
if ( $props{'flags'} & STP_PROP_VALUE,) {
$oid_value{$oid} = $props{'value'};
}
if ( $props{'flags'} & STP_PROP_FILE,) {
$oid_value{$oid} =
readfile($props{'value'},
$props{'flags'});
}
$oid_type{$oid} = $props{'type'};
$oid_next{$oid} = $props{'nextoid'};
}
}
sub portproperties
{
my $bridge = shift;
my ($baseport, $first_baseport, $prev_baseport);
$oid='.1.3.6.1.2.1.17.4.4.1';
foreach my $port (keys %{$interfaces{$bridge}}) {
$baseport = $baseports{$bridge}{$port};
unless(defined($first_baseport)){
$first_baseport=$baseport;
$oid_next{$oid.".1"}=$oid.".1.".$baseport;
$oid_next{$oid.".2"}=$oid.".2.".$baseport;
}
my $interface = $interfaces{$bridge}{$port};
my $ifdir = $netdir.$interface;
# dot1dTpPort
$oid_value{$oid.".1.".$baseport}=$baseport;
$oid_type{$oid.".1.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".1.".$prev_baseport}=
$oid.".1.".$baseport;
}
# dot1dTpPortMaxInfo
$oid_value{$oid.".2.".$baseport}=readfile($ifdir."/mtu", 0);
$oid_type{$oid.".2.".$baseport}=ASN_INTEGER;
if(defined($prev_baseport)){
$oid_next{$oid.".2.".$prev_baseport}=
$oid.".2.".$baseport;
}
# dot1dTpPortInFrames
$oid_value{$oid.".3.".$baseport}=readfile($ifdir."/statistics/rx_packets", 0);
$oid_type{$oid.".3.".$baseport}=ASN_COUNTER;
if(defined($prev_baseport)){
$oid_next{$oid.".3.".$prev_baseport}=
$oid.".3.".$baseport;
}
# dot1dTpPortOutFrames
$oid_value{$oid.".4.".$baseport}=readfile($ifdir."/statistics/tx_packets", 0);
$oid_type{$oid.".4.".$baseport}=ASN_COUNTER;
if(defined($prev_baseport)){
$oid_next{$oid.".4.".$prev_baseport}=
$oid.".4.".$baseport;
}
# dot1dTpPortInDiscards
$oid_value{$oid.".5.".$baseport}=readfile($ifdir."/statistics/rx_dropped", 0);
$oid_type{$oid.".5.".$baseport}=ASN_COUNTER;
if(defined($prev_baseport)){
$oid_next{$oid.".5.".$prev_baseport}=
$oid.".5.".$baseport;
}
$prev_baseport=$baseport;
}
if ( $prev_baseport and $first_baseport ) {
$oid_next{$oid.".1.".$prev_baseport}=$oid.".2.".$first_baseport;
$oid_next{$oid.".2.".$prev_baseport}=$oid.".3.".$first_baseport;
$oid_next{$oid.".3.".$prev_baseport}=$oid.".4.".$first_baseport;
$oid_next{$oid.".4.".$prev_baseport}=$oid.".5.".$first_baseport;
$oid_next{$oid.".5.".$prev_baseport}=".1.3.6.1.2.1.17.5.1";
}
$oid = $oid.".5.".$prev_baseport;
undef $prev_baseport;
undef $first_baseport;
}
sub dot1qbase()
{
my $bridge = shift;
my $oid=".1.3.6.1.2.1.17.7.1.1";
$oid_next{".1.3.6.1.2.1.17.7"}=$oid.".1";
$oid_next{".1.3.6.1.2.1.17.7.1"}=$oid.".1";
$oid_value{$oid.".1"}=1;
$oid_type{$oid.".1"}=ASN_INTEGER;
$oid_next{$oid.".1"}=$oid.".2";
$oid_value{$oid.".2"}=4094;
$oid_type{$oid.".2"}=ASN_UNSIGNED;
$oid_next{$oid.".2"}=$oid.".3";
$oid_value{$oid.".3"}=4094;
$oid_type{$oid.".3"}=ASN_UNSIGNED;
$oid_next{$oid.".3"}=$oid.".4";
$oid_value{$oid.".4"}=0; # filled in by currentvlans
$oid_type{$oid.".4"}=ASN_UNSIGNED;
$oid_next{$oid.".4"}=$oid.".5";
$oid_value{$oid.".5"}=2;
$oid_type{$oid.".5"}=ASN_INTEGER;
$oid_next{$oid.".5"}=0; # filled in by dot1qfdb
}
sub dot1qfdb()
{
my $bridge = shift;
my $oid=".1.3.6.1.2.1.17.7.1.2";
foreach my $vlan (sort {$a<=>$b} keys %vlans){
unless(defined($first_vlan)){
$first_vlan=$vlan;
$oid_next{".1.3.6.1.2.1.17.7.1.1.5"}=$oid.".1.1.".$vlan;
$oid_next{$oid}=$oid.".1.1.".$vlan;
$oid_next{$oid.".1"}=$oid.".1.1.".$vlan;
$oid_next{$oid.".1.1"}=$oid.".1.1.".$vlan;
$oid_next{$oid.".1.2"}=$oid.".1.2.".$vlan;
}
$oid_value{$oid.".1.1.".$vlan}=$vlan;
$oid_type{$oid.".1.1.".$vlan}=ASN_UNSIGNED;
if(defined($prv_vlan)){
$oid_next{$oid.".1.1.".$prv_vlan}=$oid.".1.1.".$vlan;
}
$oid_value{$oid.".1.2.".$vlan}=0; # to be filled later
$oid_type{$oid.".1.2.".$vlan}=ASN_COUNTER;
if(defined($prv_vlan)){
$oid_next{$oid.".1.2.".$prv_vlan}=$oid.".1.2.".$vlan;
}
$prv_vlan=$vlan;
}
if($prv_vlan and $first_vlan){
$oid_next{$oid.".1.1.".$prv_vlan}=$oid.".1.2.".$first_vlan;
$oid_next{$oid.".1.2.".$prv_vlan}=0; # to be filled later
}
my %macvlan=();
my %vlanmac=();
foreach my $vlan (sort {$a<=>$b} keys %vlans){
my $count=0;
foreach my $mac (sort {$a cmp $b} keys %macs) {
my $vbridge=$bridge."_vlan".$vlan;
next unless(defined($macs{$mac}{$vbridge}));
$count++;
my $mac_oid=mac2oid($mac);
$macvlan{$vlan.$mac_oid}=$mac;
$vlanmac{$vlan.$mac_oid}=$vlan;
}
$oid_value{$oid.".1.2.".$vlan}=$count;
}
foreach my $vmac_oid (sort {$a cmp $b} keys %vlanmac){
my $mac=$macvlan{$vmac_oid};
my $vlan=$vlanmac{$vmac_oid};
#print "VMAC: $vmac_oid ($vlan:$mac)\n";
unless(defined($first_vmac_oid)){
$first_vmac_oid=$vmac_oid;
$oid_next{$oid.".1.2.".$prv_vlan}=$oid.".2.1.".$vmac_oid;
$oid_next{$oid.".2"}=$oid.".2.1.".$vmac_oid;
$oid_next{$oid.".2.1"}=$oid.".2.1.".$vmac_oid;
$oid_next{$oid.".2.2"}=$oid.".2.2.".$vmac_oid;
$oid_next{$oid.".2.3"}=$oid.".2.3.".$vmac_oid;
}
my $port=$macs{$mac}{$bridge};
my $baseport=$baseports{$bridge}{$port};
my $status=$locals{$mac}{$bridge};
my $age=$ages{$mac}{$bridge};
print "VLAN $vlan: $mac -> $port:$baseport ($status, $age)\n";
$oid_value{$oid.".2.1.".$vmac_oid}=mac2hex($mac);
$oid_type{$oid.".2.1.".$vmac_oid}=ASN_OCTET_STR;
if(defined($prv_vmac_oid)){
$oid_next{$oid.".2.1.".$prv_vmac_oid}=$oid.".2.1.".$vmac_oid;
}
$oid_value{$oid.".2.2.".$vmac_oid}=$baseport;
$oid_type{$oid.".2.2.".$vmac_oid}=ASN_INTEGER;
if(defined($prv_vmac_oid)){
$oid_next{$oid.".2.2.".$prv_vmac_oid}=$oid.".2.2.".$vmac_oid;
}
$oid_value{$oid.".2.3.".$vmac_oid}=$status;
$oid_type{$oid.".2.3.".$vmac_oid}=ASN_INTEGER;
if(defined($prv_vmac_oid)){
$oid_next{$oid.".2.3.".$prv_vmac_oid}=$oid.".2.3.".$vmac_oid;
}
$prv_vmac_oid=$vmac_oid;
}
if ($prv_vmac_oid and $first_vmac_oid) {
$oid_next{$oid.".2.1.".$prv_vmac_oid}=$oid.".2.2.".$first_vmac_oid;
$oid_next{$oid.".2.2.".$prv_vmac_oid}=$oid.".2.3.".$first_vmac_oid;
$oid_next{$oid.".2.3.".$prv_vmac_oid}=".1.3.6.1.2.1.17.7.1.4.1";
}
undef $first_vmac_oid;
undef $prv_vmac_oid;
undef $first_vlan;
undef $prv_vlan;
}
sub dot1qcurrentvlans()
{
my $bridge = shift;
my $oid=".1.3.6.1.2.1.17.7.1.4.1";
$oid_next{".1.3.6.1.2.1.17.7.1.4"}=$oid;
$oid_value{$oid}=0; # can't keep track of this info
$oid_type{$oid}=ASN_COUNTER;
my $count=0;
$oid=".1.3.6.1.2.1.17.7.1.4.2";
foreach my $vlan (sort {$a<=>$b} keys %vlans){
$count++;
my @allports=();
my @untaggedports=();
foreach my $port (keys %{$vlans{$vlan}}){
$baseport=$baseports{$bridge}{$port};
push @allports, $baseport;
push @untaggedports, $baseport
unless($tagged{$vlan}{$port});
}
#print "ADDING: vlan $vlan (@allports, @untaggedports)\n";
unless(defined($first_vlan)){
$first_vlan=$vlan;
$oid_next{".1.3.6.1.2.1.17.7.1.4.1"}=$oid.".1.0.".$vlan;
$oid_next{$oid}=$oid.".1.0.".$vlan;
$oid_next{$oid.".1"}=$oid.".1.0.".$vlan;
$oid_next{$oid.".2"}=$oid.".2.0.".$vlan;
$oid_next{$oid.".3"}=$oid.".3.0.".$vlan;
$oid_next{$oid.".4"}=$oid.".4.0.".$vlan;
$oid_next{$oid.".5"}=$oid.".5.0.".$vlan;
$oid_next{$oid.".6"}=$oid.".6.0.".$vlan;
$oid_next{$oid.".7"}=$oid.".7.0.".$vlan;
}
$oid_value{$oid.".1.0.".$vlan}=0; # can't keep track of this
$oid_type{$oid.".1.0.".$vlan}=ASN_TIMETICKS;
if(defined($prv_vlan)){
$oid_next{$oid.".1.0.".$prv_vlan}=$oid.".1.0.".$vlan;
}
$oid_value{$oid.".2.0.".$vlan}=$vlan;
$oid_type{$oid.".2.0.".$vlan}=ASN_UNSIGNED;
if(defined($prv_vlan)){
$oid_next{$oid.".2.0.".$prv_vlan}=$oid.".2.0.".$vlan;
}
$oid_value{$oid.".3.0.".$vlan}=$vlan;
$oid_type{$oid.".3.0.".$vlan}=ASN_UNSIGNED;
if(defined($prv_vlan)){
$oid_next{$oid.".3.0.".$prv_vlan}=$oid.".3.0.".$vlan;
}
$oid_value{$oid.".4.0.".$vlan}=getportlist(@allports);
$oid_type{$oid.".4.0.".$vlan}=ASN_OCTET_STR;
if(defined($prv_vlan)){
$oid_next{$oid.".4.0.".$prv_vlan}=$oid.".4.0.".$vlan;
}
$oid_value{$oid.".5.0.".$vlan}=getportlist(@untaggedports);
$oid_type{$oid.".5.0.".$vlan}=ASN_OCTET_STR;
if(defined($prv_vlan)){
$oid_next{$oid.".5.0.".$prv_vlan}=$oid.".5.0.".$vlan;
}
$oid_value{$oid.".6.0.".$vlan}=1;
$oid_type{$oid.".6.0.".$vlan}=ASN_INTEGER;
if(defined($prv_vlan)){
$oid_next{$oid.".6.0.".$prv_vlan}=$oid.".6.0.".$vlan;
}
$oid_value{$oid.".7.0.".$vlan}=0;
$oid_type{$oid.".7.0.".$vlan}=ASN_TIMETICKS;
if(defined($prv_vlan)){
$oid_next{$oid.".7.0.".$prv_vlan}=$oid.".7.0.".$vlan;
}
$prv_vlan=$vlan;
}
$oid_value{".1.3.6.1.2.1.17.7.1.1.4"}=$count;
if($prv_vlan and $first_vlan){
$oid_next{$oid.".1.0.".$prv_vlan}=$oid.".2.0.".$first_vlan;
$oid_next{$oid.".2.0.".$prv_vlan}=$oid.".3.0.".$first_vlan;
$oid_next{$oid.".3.0.".$prv_vlan}=$oid.".4.0.".$first_vlan;
$oid_next{$oid.".4.0.".$prv_vlan}=$oid.".5.0.".$first_vlan;
$oid_next{$oid.".5.0.".$prv_vlan}=$oid.".6.0.".$first_vlan;
$oid_next{$oid.".6.0.".$prv_vlan}=$oid.".7.0.".$first_vlan;
$oid_next{$oid.".7.0.".$prv_vlan}=".1.3.6.1.2.1.17.7.1.4.3";
}
undef $prv_vlan;
undef $first_vlan;
}
sub readforwards()
{
my $bridge = shift;
my $fdb=$netdir.$bridge."/brforward";
open(FWD, $fdb) or return -1;
while(sysread(FWD, $data, 20)){
my $mac;
my ($b1,$b2,$b3,$b4,$b5,$b6,$port,$local,$age,$hi)=
unpack("C6 C C L C x3", $data);
$mac=sprintf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
$b1,$b2,$b3,$b4,$b5,$b6);
$age=$age/100;
$macs{$mac}{$bridge}=$port;
$ages{$mac}{$bridge}=$age;
$locals{$mac}{$bridge}=FDB_STATUS_LEARNED;
next if ($local);
$macs{$mac}{$bridge}=$bridge;
$locals{$mac}{$bridge}=FDB_STATUS_SELF;
}
close(FWD);
}
sub readindexes()
{
my $bridge = shift;
my $brifdir=$netdir.$bridge."/brif/";
opendir(DIR, $brifdir) or return -1;
my @interfaces = readdir(DIR);
next if ($#interfaces lt 2);
foreach my $if (@interfaces) {
next if $if eq ".";
next if $if eq "..";
my $port=hex(readfile($brifdir.$if."/port_no", 0));
my $index=readfile($netdir.$if."/ifindex", 0);
$indexes{$bridge}{$port}=$index;
$interfaces{$bridge}{$port}=$if;
}
$indexes{$bridge}{$bridge}=readfile($netdir.$bridge."/ifindex", 0);
close(DIR);
}
sub readvlans()
{
my $bridge = shift;
my $brifdir = $netdir.$bridge."/brif/";
my %ifs;
opendir(DIR, $brifdir) or return -1;
my @interfaces = readdir(DIR);
return if ($#interfaces < 2);
foreach my $if (@interfaces) {
next if $if eq ".";
next if $if eq "..";
$ifs{$if}=1;
}
close(DIR);
opendir(DIR, $netdir) or return -1;
@interfaces = readdir(DIR);
return 0 if ($#interfaces < 2);
foreach my $if (@interfaces) {
next if $if eq ".";
next if $if eq "..";
next unless($if=~/^(.*)\.(\d+)$/);
my $pif=$1;
my $vlan=$2;
next unless(defined($ifs{$pif}));
tracevlan($vlan, $if, $bridge);
}
close(DIR);
}
sub tracevlan{
my ($vlan, $interface, $bridge)=@_;
my $brifdir=$netdir.$interface."/brport/bridge/brif/";
opendir(DIR, $brifdir) or return -1;
my @interfaces = readdir(DIR);
return if ($#interfaces < 2);
foreach my $if (@interfaces) {
next if $if eq ".";
next if $if eq "..";
my $port;
my $index;
if($if=~/^(.*)\.(\d+)$/){
my $pif=$1;
$brifdir=$netdir.$pif."/brport/bridge/brif/";
$port=hex(readfile($brifdir.$pif."/port_no", 0));
$index=readfile($netdir.$pif."/ifindex", 0);
#$indexes{$bridge}{$port}=$index;
#$interfaces{$bridge}{$port}=$if;
$tagged{$vlan}{$port}=1;
}else{
my $brid=readfile($netdir.$if."/brport/bridge/ifindex", 0);
$brifdir=$netdir.$if."/brport/bridge/brif/";
$port=hex(readfile($brifdir.$if."/port_no", 0));
$port=$brid*1000+$port; #create a unique port number
$index=readfile($netdir.$if."/ifindex", 0);
$indexes{$bridge}{$port}=$index;
$interfaces{$bridge}{$port}=$if;
$tagged{$vlan}{$port}=0;
}
$vlans{$vlan}{$port}=1;
#print "VLAN: $vlan -> $if ($port <-> $index)\n";
}
close(DIR);
my $brid=readfile($netdir.$interface."/brport/bridge/ifindex", 0);
my $fdb=$netdir.$interface."/brport/bridge/brforward";
my $vbridge=$bridge."_vlan".$vlan;
open(FWD, $fdb) or return -1;
while(sysread(FWD, $data, 20)){
my $mac;
my ($b1,$b2,$b3,$b4,$b5,$b6,$port,$local,$age,$hi)=
unpack("C6 C C L C x3", $data);
$mac=sprintf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
$b1,$b2,$b3,$b4,$b5,$b6);
$port=$brid*1000+$port unless(defined($indexes{$bridge}{$port})); #create a unique port number
$age=$age/100;
#$macs{$mac}{$bridge}=$port;
$macs{$mac}{$vbridge}=$port;
#$ages{$mac}{$bridge}=$age;
$ages{$mac}{$vbridge}=$age;
#$locals{$mac}{$bridge}=FDB_STATUS_LEARNED;
$locals{$mac}{$vbridge}=FDB_STATUS_LEARNED;
next if ($local);
#$macs{$mac}{$bridge}=$bridge;
$macs{$mac}{$vbridge}=$bridge;
#$locals{$mac}{$bridge}=FDB_STATUS_SELF;
$locals{$mac}{$vbridge}=FDB_STATUS_SELF;
}
close(FWD);
}
sub readfile()
{
my $file = shift;
my $flags = shift;
open(FILE, $file) or print "Could not open file $file !\n";
my $value=<FILE>;
chomp $value;
close(FILE);
if ($flags & STP_PROP_HEX) {
return hex($value);
}
return $value;
}
sub getportlist{
my @ports=@_;
my $portlist="";
@ports=sort {$a <=> $b} @ports;
my $last=1;
foreach my $port (@ports){
for(my $i=$last; $i<$port; $i++){
$portlist=$portlist."0";
}
$portlist=$portlist."1";
$last=$port+1;
}
return pack('B*',$portlist);
}
sub mac2oid{
my ($mac)=@_;
my @octets=split(/:/,$mac);
$mac="";
foreach my $octet (@octets){
$mac=$mac.".".hex($octet);
}
return $mac;
}
sub mac2hex{
my ($mac)=@_;
my @decimals;
my @octets=split(/:/,$mac);
foreach my $octet (@octets){
push @decimals, hex($octet);
}
return pack("CCCCCC", @decimals);
}
sub shutdown {
$running = 0;
}