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# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
#
# 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.
import logging
import struct
import unittest
from os_ken.ofproto import ether
from os_ken.ofproto import inet
from os_ken.lib.packet import ethernet
from os_ken.lib.packet import packet
from os_ken.lib.packet import ipv4
from os_ken.lib.packet import vlan
from os_ken.lib.packet import pbb
LOG = logging.getLogger(__name__)
class Test_itag(unittest.TestCase):
pcp = 3
dei = 0
uca = 1
sid = 16770000
data = pcp << 29 | dei << 28 | uca << 27 | sid
buf = struct.pack(pbb.itag._PACK_STR, data)
it = pbb.itag(pcp, dei, uca, sid)
def setUp(self):
pass
def tearDown(self):
pass
def test_init(self):
self.assertEqual(self.pcp, self.it.pcp)
self.assertEqual(self.dei, self.it.dei)
self.assertEqual(self.uca, self.it.uca)
self.assertEqual(self.sid, self.it.sid)
def test_parser(self):
_res = pbb.itag.parser(self.buf)
if type(_res) is tuple:
res = _res[0]
else:
res = _res
self.assertEqual(res.pcp, self.pcp)
self.assertEqual(res.dei, self.dei)
self.assertEqual(res.uca, self.uca)
self.assertEqual(res.sid, self.sid)
def test_serialize(self):
data = bytearray()
prev = None
buf = self.it.serialize(data, prev)
res = struct.unpack(pbb.itag._PACK_STR, buf)
self.assertEqual(res[0], self.data)
def _build_itag(self):
b_src_mac = '00:07:0d:af:f4:54'
b_dst_mac = '00:00:00:00:00:00'
b_ethertype = ether.ETH_TYPE_8021AD
e1 = ethernet.ethernet(b_dst_mac, b_src_mac, b_ethertype)
b_pcp = 0
b_cfi = 0
b_vid = 32
b_ethertype = ether.ETH_TYPE_8021Q
bt = vlan.svlan(b_pcp, b_cfi, b_vid, b_ethertype)
c_src_mac = '11:11:11:11:11:11'
c_dst_mac = 'aa:aa:aa:aa:aa:aa'
c_ethertype = ether.ETH_TYPE_8021AD
e2 = ethernet.ethernet(c_dst_mac, c_src_mac, c_ethertype)
s_pcp = 0
s_cfi = 0
s_vid = 32
s_ethertype = ether.ETH_TYPE_8021Q
st = vlan.svlan(s_pcp, s_cfi, s_vid, s_ethertype)
c_pcp = 0
c_cfi = 0
c_vid = 32
c_ethertype = ether.ETH_TYPE_IP
ct = vlan.vlan(c_pcp, c_cfi, c_vid, c_ethertype)
version = 4
header_length = 20
tos = 0
total_length = 24
identification = 0x8a5d
flags = 0
offset = 1480
ttl = 64
proto = inet.IPPROTO_ICMP
csum = 0xa7f2
src = '131.151.32.21'
dst = '131.151.32.129'
option = b'TEST'
ip = ipv4.ipv4(version, header_length, tos, total_length,
identification, flags, offset, ttl, proto, csum,
src, dst, option)
p = packet.Packet()
p.add_protocol(e1)
p.add_protocol(bt)
p.add_protocol(self.it)
p.add_protocol(e2)
p.add_protocol(st)
p.add_protocol(ct)
p.add_protocol(ip)
p.serialize()
return p
def test_build_itag(self):
p = self._build_itag()
e = p.get_protocols(ethernet.ethernet)
self.assertTrue(e)
self.assertIsInstance(e, list)
self.assertEqual(e[0].ethertype, ether.ETH_TYPE_8021AD)
self.assertEqual(e[1].ethertype, ether.ETH_TYPE_8021AD)
sv = p.get_protocols(vlan.svlan)
self.assertTrue(sv)
self.assertIsInstance(sv, list)
self.assertEqual(sv[0].ethertype, ether.ETH_TYPE_8021Q)
self.assertEqual(sv[1].ethertype, ether.ETH_TYPE_8021Q)
it = p.get_protocol(pbb.itag)
self.assertTrue(it)
v = p.get_protocol(vlan.vlan)
self.assertTrue(v)
self.assertEqual(v.ethertype, ether.ETH_TYPE_IP)
ip = p.get_protocol(ipv4.ipv4)
self.assertTrue(ip)
self.assertEqual(it.pcp, self.pcp)
self.assertEqual(it.dei, self.dei)
self.assertEqual(it.uca, self.uca)
self.assertEqual(it.sid, self.sid)
def test_malformed_itag(self):
m_short_buf = self.buf[1:pbb.itag._MIN_LEN]
self.assertRaises(Exception, pbb.itag.parser, m_short_buf)
def test_json(self):
jsondict = self.it.to_jsondict()
it = pbb.itag.from_jsondict(jsondict['itag'])
self.assertEqual(str(self.it), str(it))
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