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# Copyright (C) 2016 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.
from __future__ import print_function
import logging
import os
import sys
import unittest
from nose.tools import eq_
from nose.tools import ok_
from ryu.lib import pcaplib
from ryu.lib.packet import gre
from ryu.lib.packet import packet
from ryu.utils import binary_str
from ryu.lib.packet.ether_types import ETH_TYPE_IP, ETH_TYPE_TEB
LOG = logging.getLogger(__name__)
GENEVE_DATA_DIR = os.path.join(
os.path.dirname(sys.modules[__name__].__file__),
'../../packet_data/pcap/')
class Test_gre(unittest.TestCase):
"""
Test case gre for ryu.lib.packet.gre.
"""
version = 0
gre_proto = ETH_TYPE_IP
nvgre_proto = ETH_TYPE_TEB
checksum = 0x440d
seq_number = 10
key = 256100
vsid = 1000
flow_id = 100
gre = gre.gre(version=version, protocol=gre_proto, checksum=checksum,
key=key, seq_number=seq_number)
def test_key_setter(self):
self.gre.key = self.key
eq_(self.gre._key, self.key)
eq_(self.gre._vsid, self.vsid)
eq_(self.gre._flow_id, self.flow_id)
def test_key_setter_none(self):
self.gre.key = None
eq_(self.gre._key, None)
eq_(self.gre._vsid, None)
eq_(self.gre._flow_id, None)
self.gre.key = self.key
def test_vsid_setter(self):
self.gre.vsid = self.vsid
eq_(self.gre._key, self.key)
eq_(self.gre._vsid, self.vsid)
eq_(self.gre._flow_id, self.flow_id)
def test_flowid_setter(self):
self.gre.flow_id = self.flow_id
eq_(self.gre._key, self.key)
eq_(self.gre._vsid, self.vsid)
eq_(self.gre._flow_id, self.flow_id)
def test_nvgre_init(self):
nvgre = gre.nvgre(version=self.version, vsid=self.vsid,
flow_id=self.flow_id)
eq_(nvgre.version, self.version)
eq_(nvgre.protocol, self.nvgre_proto)
eq_(nvgre.checksum, None)
eq_(nvgre.seq_number, None)
eq_(nvgre._key, self.key)
eq_(nvgre._vsid, self.vsid)
eq_(nvgre._flow_id, self.flow_id)
def test_parser(self):
files = [
'gre_full_options',
'gre_no_option',
'gre_nvgre_option',
]
for f in files:
# print('*** testing %s ...' % f)
for _, buf in pcaplib.Reader(
open(GENEVE_DATA_DIR + f + '.pcap', 'rb')):
# Checks if message can be parsed as expected.
pkt = packet.Packet(buf)
gre_pkt = pkt.get_protocol(gre.gre)
ok_(isinstance(gre_pkt, gre.gre),
'Failed to parse Gre message: %s' % pkt)
# Checks if message can be serialized as expected.
pkt.serialize()
eq_(buf, pkt.data,
"b'%s' != b'%s'" % (binary_str(buf), binary_str(pkt.data)))
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