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# Copyright (C) 2012 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.
# vim: tabstop=4 shiftwidth=4 softtabstop=4
import sys
import logging
import itertools
from ryu import utils
from ryu.lib import mac
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller import handler
from ryu.controller import dpset
from ryu.controller.handler import MAIN_DISPATCHER
from ryu.controller.handler import CONFIG_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_0
from ryu.ofproto import ofproto_v1_2
LOG = logging.getLogger(__name__)
LOG_TEST_START = 'TEST_START: %s'
LOG_TEST_RESULTS = 'TEST_RESULTS:'
LOG_TEST_FINISH = 'TEST_FINISHED: Completed=[%s] (OK=%s NG=%s SKIP=%s)'
LOG_TEST_UNSUPPORTED = 'SKIP (unsupported)'
class TestFlowBase(app_manager.RyuApp):
"""
To run the tests is required for the following pair of functions.
1. test_<test name>()
To send flows to switch.
2. verify_<test name>() or _verify_default()
To check flows of switch.
"""
_CONTEXTS = {'dpset': dpset.DPSet}
def __init__(self, *args, **kwargs):
super(TestFlowBase, self).__init__(*args, **kwargs)
self.pending = []
self.results = {}
self.current = None
self.unclear = 0
for t in dir(self):
if t.startswith("test_"):
self.pending.append(t)
self.pending.sort(reverse=True)
self.unclear = len(self.pending)
def delete_all_flows(self, dp):
if dp.ofproto == ofproto_v1_0:
match = dp.ofproto_parser.OFPMatch(dp.ofproto.OFPFW_ALL,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0)
m = dp.ofproto_parser.OFPFlowMod(dp, match, 0,
dp.ofproto.OFPFC_DELETE,
0, 0, 0, 0,
dp.ofproto.OFPP_NONE, 0, None)
elif dp.ofproto == ofproto_v1_2:
match = dp.ofproto_parser.OFPMatch()
m = dp.ofproto_parser.OFPFlowMod(dp, 0, 0, dp.ofproto.OFPTT_ALL,
dp.ofproto.OFPFC_DELETE,
0, 0, 0, 0xffffffff,
dp.ofproto.OFPP_ANY,
dp.ofproto.OFPG_ANY,
0, match, [])
dp.send_msg(m)
def send_flow_stats(self, dp):
if dp.ofproto == ofproto_v1_0:
match = dp.ofproto_parser.OFPMatch(dp.ofproto.OFPFW_ALL,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0)
m = dp.ofproto_parser.OFPFlowStatsRequest(dp, 0, match,
0, dp.ofproto.OFPP_NONE)
elif dp.ofproto == ofproto_v1_2:
match = dp.ofproto_parser.OFPMatch()
m = dp.ofproto_parser.OFPFlowStatsRequest(dp, dp.ofproto.OFPTT_ALL,
dp.ofproto.OFPP_ANY,
dp.ofproto.OFPG_ANY,
0, 0, match)
dp.send_msg(m)
def verify_default(self, dp, stats):
return 'function %s() is not found.' % ("verify" + self.current[4:], )
def start_next_test(self, dp):
self.delete_all_flows(dp)
dp.send_barrier()
if len(self.pending):
t = self.pending.pop()
if self.is_supported(t):
LOG.info(LOG_TEST_START, t)
self.current = t
getattr(self, t)(dp)
dp.send_barrier()
self.send_flow_stats(dp)
else:
self.results[t] = LOG_TEST_UNSUPPORTED
self.unclear -= 1
self.start_next_test(dp)
else:
self.print_results()
def print_results(self):
LOG.info("TEST_RESULTS:")
ok = 0
ng = 0
skip = 0
for t in sorted(self.results.keys()):
if self.results[t] is True:
ok += 1
elif self.results[t] == LOG_TEST_UNSUPPORTED:
skip += 1
else:
ng += 1
LOG.info(" %s: %s", t, self.results[t])
LOG.info(LOG_TEST_FINISH, self.unclear == 0, ok, ng, skip)
@handler.set_ev_cls(ofp_event.EventOFPFlowStatsReply,
handler.MAIN_DISPATCHER)
def flow_reply_handler(self, ev):
self.run_verify(ev)
@handler.set_ev_cls(ofp_event.EventOFPStatsReply,
handler.MAIN_DISPATCHER)
def stats_reply_handler(self, ev):
self.run_verify(ev)
def run_verify(self, ev):
msg = ev.msg
dp = msg.datapath
verify_func = self.verify_default
v = "verify" + self.current[4:]
if hasattr(self, v):
verify_func = getattr(self, v)
result = verify_func(dp, msg.body)
if result is True:
self.unclear -= 1
self.results[self.current] = result
self.start_next_test(dp)
@handler.set_ev_cls(dpset.EventDP)
def handler_datapath(self, ev):
if ev.enter:
self.start_next_test(ev.dp)
@set_ev_cls(ofp_event.EventOFPBarrierReply, MAIN_DISPATCHER)
def barrier_replay_handler(self, ev):
pass
def haddr_to_str(self, addr):
return mac.haddr_to_str(addr)
def haddr_to_bin(self, string):
return mac.haddr_to_bin(string)
def haddr_masked(self, haddr_bin, mask_bin):
return mac.haddr_bitand(haddr_bin, mask_bin)
def ipv4_to_str(self, integre):
ip_list = [str((integre >> (24 - (n * 8)) & 255)) for n in range(4)]
return '.'.join(ip_list)
def ipv4_to_int(self, string):
ip = string.split('.')
assert len(ip) == 4
i = 0
for b in ip:
b = int(b)
i = (i << 8) | b
return i
def ipv4_masked(self, ip_int, mask_int):
return ip_int & mask_int
def ipv6_to_str(self, integres):
return ':'.join(hex(x)[2:] for x in integres)
def ipv6_to_int(self, string):
ip = string.split(':')
assert len(ip) == 8
return [int(x, 16) for x in ip]
def ipv6_masked(self, ipv6_int, mask_int):
return [x & y for (x, y) in
itertools.izip(ipv6_int, mask_int)]
def is_supported(self, t):
return True
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