aboutsummaryrefslogtreecommitdiffstats
path: root/docs/_images/fib20fig9.png
diff options
context:
space:
mode:
authorMarco Varlese <marco.varlese@suse.com>2018-10-10 09:38:07 +0200
committerMarco Varlese <marco.varlese@suse.com>2018-10-10 09:38:07 +0200
commit90395743d30fdde9e1e76c18d8ab5c2f0435c7b8 (patch)
treea6375865489cf9678d33c37150d20d2faf339e81 /docs/_images/fib20fig9.png
parent4f611176e9e0673d644b40f6978a24c031e65709 (diff)
Update .gitreview for stable 18.10 branchv18.10-rc1
Change-Id: I9f3d551acad6fd2fdd733f7f49e8c75ef43ceebc Signed-off-by: Marco Varlese <marco.varlese@suse.com>
Diffstat (limited to 'docs/_images/fib20fig9.png')
0 files changed, 0 insertions, 0 deletions
n140'>140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 
#!/usr/bin/env python

from framework import VppTestCase, VppTestRunner
from vpp_udp_encap import *
from vpp_ip import DpoProto
from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable

from scapy.packet import Raw
from scapy.layers.l2 import Ether, ARP
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.contrib.mpls import MPLS

from vpp_object import *
from socket import inet_pton, inet_ntop, AF_INET, AF_INET6


def find_abf_policy(test, id):
    policies = test.vapi.abf_policy_dump()
    for p in policies:
        if id == p.policy.policy_id:
            return True
    return False


def find_abf_itf_attach(test, id, sw_if_index):
    attachs = test.vapi.abf_itf_attach_dump()
    for a in attachs:
        if id == a.attach.policy_id and \
           sw_if_index == a.attach.sw_if_index:
            return True
    return False


class VppAbfPolicy(VppObject):

    def __init__(self,
                 test,
                 policy_id,
                 acl,
                 paths):
        self._test = test
        self.policy_id = policy_id
        self.acl = acl
        self.paths = paths

    def encode_paths(self):
        br_paths = []
        for p in self.paths:
            lstack = []
            for l in p.nh_labels:
                if type(l) == VppMplsLabel:
                    lstack.append(l.encode())
                else:
                    lstack.append({'label': l, 'ttl': 255})
            n_labels = len(lstack)
            while (len(lstack) < 16):
                lstack.append({})
            br_paths.append({'next_hop': p.nh_addr,
                             'weight': 1,
                             'afi': p.proto,
                             'sw_if_index': 0xffffffff,
                             'preference': 0,
                             'table_id': p.nh_table_id,
                             'next_hop_id': p.next_hop_id,
                             'is_udp_encap': p.is_udp_encap,
                             'n_labels': n_labels,
                             'label_stack': lstack})
        return br_paths

    def add_vpp_config(self):
        self._test.vapi.abf_policy_add_del(
            1,
            {'policy_id': self.policy_id,
             'acl_index': self.acl.acl_index,
             'n_paths': len(self.paths),
             'paths': self.encode_paths()})
        self._test.registry.register(self, self._test.logger)

    def remove_vpp_config(self):
        self._test.vapi.abf_policy_add_del(
            0,
            {'policy_id': self.policy_id,
             'acl_index': self.acl.acl_index,
             'n_paths': len(self.paths),
             'paths': self.encode_paths()})

    def query_vpp_config(self):
        return find_abf_policy(self._test, self.policy_id)

    def __str__(self):
        return self.object_id()

    def object_id(self):
        return ("abf-policy-%d" % self.policy_id)


class VppAbfAttach(VppObject):

    def __init__(self,
                 test,
                 policy_id,
                 sw_if_index,
                 priority,
                 is_ipv6=0):
        self._test = test
        self.policy_id = policy_id
        self.sw_if_index = sw_if_index
        self.priority = priority
        self.is_ipv6 = is_ipv6

    def add_vpp_config(self):
        self._test.vapi.abf_itf_attach_add_del(
            1,
            {'policy_id': self.policy_id,
             'sw_if_index': self.sw_if_index,
             'priority': self.priority,
             'is_ipv6': self.is_ipv6})
        self._test.registry.register(self, self._test.logger)

    def remove_vpp_config(self):
        self._test.vapi.abf_itf_attach_add_del(
            0,
            {'policy_id': self.policy_id,
             'sw_if_index': self.sw_if_index,
             'priority': self.priority,
             'is_ipv6': self.is_ipv6})

    def query_vpp_config(self):
        return find_abf_itf_attach(self._test,
                                   self.policy_id,
                                   self.sw_if_index)

    def __str__(self):
        return self.object_id()

    def object_id(self):
        return ("abf-attach-%d-%d" % (self.policy_id, self.sw_if_index))


class TestAbf(VppTestCase):
    """ ABF Test Case """

    def setUp(self):
        super(TestAbf, self).setUp()

        self.create_pg_interfaces(range(4))

        for i in self.pg_interfaces:
            i.admin_up()
            i.config_ip4()
            i.resolve_arp()
            i.config_ip6()
            i.resolve_ndp()

    def tearDown(self):
        for i in self.pg_interfaces:
            i.unconfig_ip4()
            i.unconfig_ip6()
            i.ip6_disable()
            i.admin_down()
        super(TestAbf, self).tearDown()

    def test_abf4(self):
        """ IPv4 ACL Based Forwarding
        """

        #
        # We are not testing the various matching capabilities
        # of ACLs, that's done elsewhere. Here ware are testing
        # the application of ACLs to a forwarding path to achieve
        # ABF
        # So we construct just a few ACLs to ensure the ABF policies
        # are correclty constructed and used. And a few path types
        # to test the API path decoding.
        #

        #
        # Rule 1
        #
        rule_1 = ({'is_permit': 1,
                   'is_ipv6': 0,
                   'proto': 17,
                   'srcport_or_icmptype_first': 1234,
                   'srcport_or_icmptype_last': 1234,
                   'src_ip_prefix_len': 32,
                   'src_ip_addr': inet_pton(AF_INET, "1.1.1.1"),
                   'dstport_or_icmpcode_first': 1234,
                   'dstport_or_icmpcode_last': 1234,
                   'dst_ip_prefix_len': 32,
                   'dst_ip_addr': inet_pton(AF_INET, "1.1.1.2")})
        acl_1 = self.vapi.acl_add_replace(acl_index=4294967295, r=[rule_1])

        #
        # ABF policy for ACL 1 - path via interface 1
        #
        abf_1 = VppAbfPolicy(self, 10, acl_1,
                             [VppRoutePath(self.pg1.remote_ip4,
                                           self.pg1.sw_if_index)])
        abf_1.add_vpp_config()

        #
        # Attach the policy to input interface Pg0
        #
        attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
        attach_1.add_vpp_config()

        #
        # fire in packet matching the ACL src,dst. If it's forwarded
        # then the ABF was successful, since default routing will drop it
        #
        p_1 = (Ether(src=self.pg0.remote_mac,
                     dst=self.pg0.local_mac) /
               IP(src="1.1.1.1", dst="1.1.1.2") /
               UDP(sport=1234, dport=1234) /
               Raw('\xa5' * 100))
        self.send_and_expect(self.pg0, p_1*65, self.pg1)

        #
        # Attach a 'better' priority policy to the same interface
        #
        abf_2 = VppAbfPolicy(self, 11, acl_1,
                             [VppRoutePath(self.pg2.remote_ip4,
                                           self.pg2.sw_if_index)])
        abf_2.add_vpp_config()
        attach_2 = VppAbfAttach(self, 11, self.pg0.sw_if_index, 40)
        attach_2.add_vpp_config()

        self.send_and_expect(self.pg0, p_1*65, self.pg2)

        #
        # Attach a policy with priority in the middle
        #
        abf_3 = VppAbfPolicy(self, 12, acl_1,
                             [VppRoutePath(self.pg3.remote_ip4,
                                           self.pg3.sw_if_index)])
        abf_3.add_vpp_config()
        attach_3 = VppAbfAttach(self, 12, self.pg0.sw_if_index, 45)
        attach_3.add_vpp_config()

        self.send_and_expect(self.pg0, p_1*65, self.pg2)

        #
        # remove the best priority
        #
        attach_2.remove_vpp_config()
        self.send_and_expect(self.pg0, p_1*65, self.pg3)

        #
        # Attach one of the same policies to Pg1
        #
        attach_4 = VppAbfAttach(self, 12, self.pg1.sw_if_index, 45)
        attach_4.add_vpp_config()

        p_2 = (Ether(src=self.pg1.remote_mac,
                     dst=self.pg1.local_mac) /
               IP(src="1.1.1.1", dst="1.1.1.2") /
               UDP(sport=1234, dport=1234) /
               Raw('\xa5' * 100))
        self.send_and_expect(self.pg1, p_2 * 65, self.pg3)

        #
        # detach the policy from PG1, now expect traffic to be dropped
        #
        attach_4.remove_vpp_config()

        self.send_and_assert_no_replies(self.pg1, p_2 * 65, "Detached")

    def test_abf6(self):
        """ IPv6 ACL Based Forwarding
        """

        #
        # Simple test for matching IPv6 packets
        #

        #
        # Rule 1
        #
        rule_1 = ({'is_permit': 1,
                   'is_ipv6': 1,
                   'proto': 17,
                   'srcport_or_icmptype_first': 1234,
                   'srcport_or_icmptype_last': 1234,
                   'src_ip_prefix_len': 128,
                   'src_ip_addr': inet_pton(AF_INET6, "2001::2"),
                   'dstport_or_icmpcode_first': 1234,
                   'dstport_or_icmpcode_last': 1234,
                   'dst_ip_prefix_len': 128,
                   'dst_ip_addr': inet_pton(AF_INET6, "2001::1")})
        acl_1 = self.vapi.acl_add_replace(acl_index=4294967295,
                                          r=[rule_1])

        #
        # ABF policy for ACL 1 - path via interface 1
        #
        abf_1 = VppAbfPolicy(self, 10, acl_1,
                             [VppRoutePath("3001::1",
                                           0xffffffff,
                                           proto=DpoProto.DPO_PROTO_IP6)])
        abf_1.add_vpp_config()

        attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index,
                                45, is_ipv6=True)
        attach_1.add_vpp_config()

        #
        # a packet matching the rule
        #
        p = (Ether(src=self.pg0.remote_mac,
                   dst=self.pg0.local_mac) /
             IPv6(src="2001::2", dst="2001::1") /
             UDP(sport=1234, dport=1234) /
             Raw('\xa5' * 100))

        #
        # packets are dropped because there is no route to the policy's
        # next hop
        #
        self.send_and_assert_no_replies(self.pg1, p * 65, "no route")

        #
        # add a route resolving the next-hop
        #
        route = VppIpRoute(self, "3001::1", 32,
                           [VppRoutePath(self.pg1.remote_ip6,
                                         self.pg1.sw_if_index,
                                         proto=DpoProto.DPO_PROTO_IP6)],
                           is_ip6=1)
        route.add_vpp_config()

        #
        # now expect packets forwarded.
        #
        self.send_and_expect(self.pg0, p * 65, self.pg1)


if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)