/usr/src/openvswitch-1.4.0/tests/flowgen.pl is in openvswitch-datapath-dkms 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 | #! /usr/bin/perl
# Copyright (c) 2009, 2010, 2011 Nicira Networks.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
use strict;
use warnings;
open(FLOWS, ">&=3");# or die "failed to open fd 3 for writing: $!\n";
open(PACKETS, ">&=4");# or die "failed to open fd 4 for writing: $!\n";
# Print pcap file header.
print PACKETS pack('NnnNNNN',
0xa1b2c3d4, # magic number
2, # major version
4, # minor version
0, # time zone offset
0, # time stamp accuracy
1518, # snaplen
1); # Ethernet
output(DL_HEADER => '802.2');
for my $dl_header (qw(802.2+SNAP Ethernet)) {
my %a = (DL_HEADER => $dl_header);
for my $dl_vlan (qw(none zero nonzero)) {
my %b = (%a, DL_VLAN => $dl_vlan);
# Non-IP case.
output(%b, DL_TYPE => 'non-ip');
for my $ip_options (qw(no yes)) {
my %c = (%b, DL_TYPE => 'ip', IP_OPTIONS => $ip_options);
for my $ip_fragment (qw(no first middle last)) {
my %d = (%c, IP_FRAGMENT => $ip_fragment);
for my $tp_proto (qw(TCP TCP+options UDP ICMP other)) {
output(%d, TP_PROTO => $tp_proto);
}
}
}
}
}
sub output {
my (%attrs) = @_;
# Compose flow.
my (%flow);
$flow{DL_SRC} = "00:02:e3:0f:80:a4";
$flow{DL_DST} = "00:1a:92:40:ac:05";
$flow{NW_PROTO} = 0;
$flow{NW_TOS} = 0;
$flow{NW_SRC} = '0.0.0.0';
$flow{NW_DST} = '0.0.0.0';
$flow{TP_SRC} = 0;
$flow{TP_DST} = 0;
if (defined($attrs{DL_VLAN})) {
my (%vlan_map) = ('none' => 0xffff,
'zero' => 0,
'nonzero' => 0x0123);
$flow{DL_VLAN} = $vlan_map{$attrs{DL_VLAN}};
} else {
$flow{DL_VLAN} = 0xffff; # OFP_VLAN_NONE
}
if ($attrs{DL_HEADER} eq '802.2') {
$flow{DL_TYPE} = 0x5ff; # OFP_DL_TYPE_NOT_ETH_TYPE
} elsif ($attrs{DL_TYPE} eq 'ip') {
$flow{DL_TYPE} = 0x0800; # ETH_TYPE_IP
$flow{NW_SRC} = '10.0.2.15';
$flow{NW_DST} = '192.168.1.20';
$flow{NW_TOS} = 44;
if ($attrs{TP_PROTO} eq 'other') {
$flow{NW_PROTO} = 42;
} elsif ($attrs{TP_PROTO} eq 'TCP' ||
$attrs{TP_PROTO} eq 'TCP+options') {
$flow{NW_PROTO} = 6; # IPPROTO_TCP
$flow{TP_SRC} = 6667;
$flow{TP_DST} = 9998;
} elsif ($attrs{TP_PROTO} eq 'UDP') {
$flow{NW_PROTO} = 17; # IPPROTO_UDP
$flow{TP_SRC} = 1112;
$flow{TP_DST} = 2223;
} elsif ($attrs{TP_PROTO} eq 'ICMP') {
$flow{NW_PROTO} = 1; # IPPROTO_ICMP
$flow{TP_SRC} = 8; # echo request
$flow{TP_DST} = 0; # code
} else {
die;
}
if ($attrs{IP_FRAGMENT} ne 'no' && $attrs{IP_FRAGMENT} ne 'first') {
$flow{TP_SRC} = $flow{TP_DST} = 0;
}
} elsif ($attrs{DL_TYPE} eq 'non-ip') {
$flow{DL_TYPE} = 0x5678;
} else {
die;
}
# Compose packet.
my $packet = '';
$packet .= pack_ethaddr($flow{DL_DST});
$packet .= pack_ethaddr($flow{DL_SRC});
if ($flow{DL_VLAN} != 0xffff) {
$packet .= pack('nn', 0x8100, $flow{DL_VLAN});
}
my $len_ofs = length($packet);
$packet .= pack('n', 0) if $attrs{DL_HEADER} =~ /^802.2/;
if ($attrs{DL_HEADER} eq '802.2') {
$packet .= pack('CCC', 0x42, 0x42, 0x03); # LLC for 802.1D STP.
} else {
if ($attrs{DL_HEADER} eq '802.2+SNAP') {
$packet .= pack('CCC', 0xaa, 0xaa, 0x03); # LLC for SNAP.
$packet .= pack('CCC', 0, 0, 0); # SNAP OUI.
}
$packet .= pack('n', $flow{DL_TYPE});
if ($attrs{DL_TYPE} eq 'ip') {
my $ip = pack('CCnnnCCnNN',
(4 << 4) | 5, # version, hdrlen
$flow{NW_TOS}, # type of service
0, # total length (filled in later)
65432, # id
0, # frag offset
64, # ttl
$flow{NW_PROTO}, # protocol
0, # checksum
0x0a00020f, # source
0xc0a80114); # dest
if ($attrs{IP_OPTIONS} eq 'yes') {
substr($ip, 0, 1) = pack('C', (4 << 4) | 8);
$ip .= pack('CCnnnCCCx',
130, # type
11, # length
0x6bc5, # top secret
0xabcd,
0x1234,
1,
2,
3);
}
if ($attrs{IP_FRAGMENT} ne 'no') {
my (%frag_map) = ('first' => 0x2000, # more frags, ofs 0
'middle' => 0x2111, # more frags, ofs 0x888
'last' => 0x0222); # last frag, ofs 0x1110
substr($ip, 6, 2)
= pack('n', $frag_map{$attrs{IP_FRAGMENT}});
}
if ($attrs{TP_PROTO} =~ '^TCP') {
my $tcp = pack('nnNNnnnn',
$flow{TP_SRC}, # source port
$flow{TP_DST}, # dest port
87123455, # seqno
712378912, # ackno
(5 << 12) | 0x02 | 0x10, # hdrlen, SYN, ACK
5823, # window size
18923, # checksum
12893); # urgent pointer
if ($attrs{TP_PROTO} eq 'TCP+options') {
substr($tcp, 12, 2) = pack('n', (6 << 12) | 0x02 | 0x10);
$tcp .= pack('CCn', 2, 4, 1975); # MSS option
}
$tcp .= 'payload';
$ip .= $tcp;
} elsif ($attrs{TP_PROTO} eq 'UDP') {
my $len = 15;
my $udp = pack('nnnn', $flow{TP_SRC}, $flow{TP_DST}, $len, 0);
$udp .= chr($len) while length($udp) < $len;
$ip .= $udp;
} elsif ($attrs{TP_PROTO} eq 'ICMP') {
$ip .= pack('CCnnn',
8, # echo request
0, # code
0, # checksum
736, # identifier
931); # sequence number
} elsif ($attrs{TP_PROTO} eq 'other') {
$ip .= 'other header';
} else {
die;
}
substr($ip, 2, 2) = pack('n', length($ip));
$packet .= $ip;
}
}
if ($attrs{DL_HEADER} =~ /^802.2/) {
my $len = length ($packet);
$len -= 4 if $flow{DL_VLAN} != 0xffff;
substr($packet, $len_ofs, 2) = pack('n', $len);
}
print join(' ', map("$_=$attrs{$_}", keys(%attrs))), "\n";
print join(' ', map("$_=$flow{$_}", keys(%flow))), "\n";
print "\n";
print FLOWS pack('Nn',
0, # wildcards
1); # in_port
print FLOWS pack_ethaddr($flow{DL_SRC});
print FLOWS pack_ethaddr($flow{DL_DST});
print FLOWS pack('nCxnCCxxNNnn',
$flow{DL_VLAN},
0, # DL_VLAN_PCP
$flow{DL_TYPE},
$flow{NW_TOS},
$flow{NW_PROTO},
inet_aton($flow{NW_SRC}),
inet_aton($flow{NW_DST}),
$flow{TP_SRC},
$flow{TP_DST});
print PACKETS pack('NNNN',
0, # timestamp seconds
0, # timestamp microseconds
length($packet), # bytes saved
length($packet)), # total length
$packet;
}
sub pack_ethaddr {
local ($_) = @_;
my $xx = '([0-9a-fA-F][0-9a-fA-F])';
my (@octets) = /$xx:$xx:$xx:$xx:$xx:$xx/;
@octets == 6 or die $_;
my ($out) = '';
$out .= pack('C', hex($_)) foreach @octets;
return $out;
}
sub inet_aton {
local ($_) = @_;
my ($a, $b, $c, $d) = /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/;
defined $d or die $_;
return ($a << 24) | ($b << 16) | ($c << 8) | $d;
}
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