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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.
import logging
import unittest
from nose.tools import eq_
from nose.tools import raises
from ryu.lib.packet import ethernet
from ryu.lib.packet import vxlan
LOG = logging.getLogger(__name__)
class Test_vxlan(unittest.TestCase):
"""
Test case for VXLAN (RFC 7348) header encoder/decoder class.
"""
vni = 0x123456
buf = (
b'\x08\x00\x00\x00' # flags = R|R|R|R|I|R|R|R (8 bits)
b'\x12\x34\x56\x00' # vni = 0x123456 (24 bits)
b'test_payload' # for test
)
pkt = vxlan.vxlan(vni)
jsondict = {
'vxlan': {
'vni': vni
}
}
def test_init(self):
eq_(self.vni, self.pkt.vni)
def test_parser(self):
parsed_pkt, next_proto_cls, rest_buf = vxlan.vxlan.parser(self.buf)
eq_(self.vni, parsed_pkt.vni)
eq_(ethernet.ethernet, next_proto_cls)
eq_(b'test_payload', rest_buf)
@raises(AssertionError)
def test_invalid_flags(self):
invalid_flags_bug = (
b'\x00\x00\x00\x00' # all bits are set to zero
b'\x12\x34\x56\x00' # vni = 0x123456 (24 bits)
)
vxlan.vxlan.parser(invalid_flags_bug)
def test_serialize(self):
serialized_buf = self.pkt.serialize(payload=None, prev=None)
eq_(self.buf[:vxlan.vxlan._MIN_LEN], serialized_buf)
def test_from_jsondict(self):
pkt_from_json = vxlan.vxlan.from_jsondict(
self.jsondict[vxlan.vxlan.__name__])
eq_(self.vni, pkt_from_json.vni)
def test_to_jsondict(self):
jsondict_from_pkt = self.pkt.to_jsondict()
eq_(self.jsondict, jsondict_from_pkt)
def test_vni_from_bin(self):
vni = vxlan.vni_from_bin(b'\x12\x34\x56')
eq_(self.vni, vni)
def test_vni_to_bin(self):
eq_(b'\x12\x34\x56', vxlan.vni_to_bin(self.vni))
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