1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
#! /usr/bin/perl
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stephen Hemminger
# Date: Novemember 2010
# Description: Script for show snmp ifmib
#
# **** End License ****
use strict;
use warnings;
use Getopt::Long;
use POSIX qw(strtol);
# This is used to show values corresponding to to results IF-MIB.
my %interfaces;
sub show_ifindex {
foreach my $ifname (@_) {
my $info = $interfaces{$ifname};
my $ifindex = $info->{'ifIndex'};
printf "%s: ifIndex = %d\n", $ifname, $ifindex;
}
}
sub show_ifalias {
foreach my $ifname (@_) {
my $info = $interfaces{$ifname};
my $ifalias = $info->{'ifAlias'};
printf "%s: ifAlias = %s\n", $ifname,
defined($ifalias) ? $ifalias : $ifname;
}
}
sub read_sysfs {
my $filename = shift;
open( my $f, '<', $filename )
or return; # not a PCI device
my $val = <$f>;
close $f;
return strtol($val);
}
# Imitate code in net-snmp to lookup PC
# TODO - move to common code extension (and handle USB?)
sub pci_info {
my $ifname = shift;
my $vendor_id = read_sysfs("/sys/class/net/$ifname/device/vendor");
my $device_id = read_sysfs("/sys/class/net/$ifname/device/device");
return unless ( defined($vendor_id) && defined($device_id) );
my $cmd = sprintf("lspci -m -d %04x:%04x", $vendor_id, $device_id);
open( my $pci, '-|', $cmd )
or die "Can't run $cmd";
my $info = <$pci>;
close $pci;
return unless $info;
# extract vendor and device description from output
$info =~ /^\S+ "[^"]*" "([^"]*)" "([^"]*)"/;
return "$1 $2";
}
sub show_ifdescr {
foreach my $ifname (@_) {
my $ifdescr = pci_info($ifname);
printf "%s: ifDescr = %s\n", $ifname,
defined($ifdescr) ? $ifdescr : $ifname;
}
}
sub show_all {
foreach my $ifname (@_) {
my $info = $interfaces{$ifname};
my $ifindex = $info->{'ifIndex'};
my $ifalias = $info->{'ifAlias'};
my $ifdescr = pci_info($ifname);
printf "%s: ifIndex = %d\n", $ifname, $ifindex;
my $pad = sprintf( "%-*s", length($ifname) + 1, " " );
printf "%s ifAlias = %s\n", $pad, $ifalias if ($ifalias);
printf "%s ifDescr = %s\n", $pad, $ifdescr if ($ifdescr);
}
}
my $show = \&show_all;
GetOptions(
"ifindex" => sub { $show = \&show_ifindex },
"ifalias" => sub { $show = \&show_ifalias },
"ifdescr" => sub { $show = \&show_ifdescr },
) or die "Unknown option\n";
# List of all interfaces that currently exist on system
# includes interfaces that may be outside Vyatta CLI because
# they still show up in SNMP
open( my $ip, '-|', 'ip li' )
or die "Can't run ip command\n";
my $ifname;
while (<$ip>) {
if (/^(\d+): ([^:]*): /) {
$ifname = $2;
$interfaces{$ifname} = { 'ifIndex' => $1 };
}
elsif (/^ +alias (.*)$/) {
$interfaces{$ifname}->{'ifAlias'} = $1;
}
}
close $ip;
if (@ARGV) {
$show->(@ARGV);
}
else {
$show->( sort keys %interfaces );
}
|
