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path: root/src/vnet/ip/ip.c
AgeCommit message (Expand)AuthorFilesLines
2021-01-28ip: Router ID included in flow hashNeale Ranns1-0/+8
2021-01-21ip: use IPv6 flowlabel in flow hash computationAhmed Abdelsalam1-0/+15
2020-11-27ip: Sub Address Family types. Feature enable for each SAFINeale Ranns1-0/+120
2020-11-02ipsec: Tunnel SA DSCP behaviourNeale Ranns1-0/+18
2020-07-06ip: set ip4 mask for ip_copy and ip_set when dealing with ip4 typejiangxiaoming1-2/+8
2020-04-23ip: Replace Sematics for Interface IP addressesNeale Ranns1-67/+0
2020-03-17ip: ip_address_t uses ip46_address_tNeale Ranns1-117/+21
2019-12-03ipip: Tunnel flags controlling copying data to/from payload/encapNeale Ranns1-0/+17
2019-10-30ip: cleanup typos in documentationPaul Vinciguerra1-1/+1
2019-08-26ip: ip6_preflen_to_mask incorrect result for prefix len > 64Andrew Yourtchenko1-0/+1
2019-07-26dhcp ip: DSCP settings for transmitted DHCP packetsNeale Ranns1-0/+17
2019-05-28Punt: socket register for exception dispatched/punted packets based on reasonNeale Ranns1-0/+16
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach1-3/+4
2018-04-03session: use fib index in ip local testFlorin Coras1-1/+1
2018-03-26VCL: add IPv6 to socket_test.sh and make testDave Wallace1-2/+4
2018-03-01session: zero out ips in local endpoint lookup only if localFlorin Coras1-0/+12
2017-11-26Fix session rule port endianness.Milan Lenco1-2/+2
2017-11-01session: add support for proxying appsFlorin Coras1-1/+3
2017-10-29session: fix coverity warningsFlorin Coras1-3/+8
2017-10-28session: rules tablesFlorin Coras1-0/+108
2017-10-16udp: refactor udp codeFlorin Coras1-12/+45
2017-10-10session: add support for application namespacingFlorin Coras1-0/+124
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#!/usr/bin/env python3

import unittest

from framework import VppTestCase, VppTestRunner
from vpp_ip_route import VppIpTable

from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP, ICMP
from scapy.layers.inet6 import IPv6

from vpp_papi import VppEnum

NUM_PKTS = 67


class TestSVS(VppTestCase):
    """SVS Test Case"""

    @classmethod
    def setUpClass(cls):
        super(TestSVS, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestSVS, cls).tearDownClass()

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

        # create 2 pg interfaces
        self.create_pg_interfaces(range(4))

        table_id = 0

        for i in self.pg_interfaces:
            i.admin_up()

            if table_id != 0:
                tbl = VppIpTable(self, table_id)
                tbl.add_vpp_config()
                tbl = VppIpTable(self, table_id, is_ip6=1)
                tbl.add_vpp_config()

            i.set_table_ip4(table_id)
            i.set_table_ip6(table_id)
            i.config_ip4()
            i.resolve_arp()
            i.config_ip6()
            i.resolve_ndp()
            table_id += 1

    def tearDown(self):
        for i in self.pg_interfaces:
            i.unconfig_ip4()
            i.unconfig_ip6()
            i.set_table_ip4(0)
            i.set_table_ip6(0)
            i.admin_down()
        super(TestSVS, self).tearDown()

    def test_svs4(self):
        """Source VRF Select IP4"""

        #
        # packets destined out of the 3 non-default table interfaces
        #
        pkts_0 = [
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IP(src="1.1.1.1", dst=self.pg1.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IP(src="2.2.2.2", dst=self.pg2.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IP(src="3.3.3.3", dst=self.pg3.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
        ]
        pkts_1 = [
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IP(src="1.1.1.1", dst=self.pg1.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IP(src="2.2.2.2", dst=self.pg2.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IP(src="3.3.3.3", dst=self.pg3.remote_ip4)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
        ]

        #
        # before adding the SVS config all these packets are dropped when
        # ingressing on pg0 since pg0 is in the default table
        #
        for p in pkts_0:
            self.send_and_assert_no_replies(self.pg0, p * 1)

        #
        # Add table 1001 & 1002 into which we'll add the routes
        # determining the source VRF selection
        #
        table_ids = [101, 102]

        for table_id in table_ids:
            self.vapi.svs_table_add_del(
                is_add=1,
                af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
                table_id=table_id,
            )

            #
            # map X.0.0.0/8 to each SVS table for lookup in table X
            #
            for i in range(1, 4):
                self.vapi.svs_route_add_del(
                    is_add=1,
                    prefix="%d.0.0.0/8" % i,
                    table_id=table_id,
                    source_table_id=i,
                )

        #
        # Enable SVS on pg0/pg1 using table 1001/1002
        #
        self.vapi.svs_enable_disable(
            is_enable=1,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
            table_id=table_ids[0],
            sw_if_index=self.pg0.sw_if_index,
        )
        self.vapi.svs_enable_disable(
            is_enable=1,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
            table_id=table_ids[1],
            sw_if_index=self.pg1.sw_if_index,
        )

        #
        # now all the packets should be delivered out the respective interface
        #
        self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
        self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
        self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
        self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
        self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
        self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)

        #
        # check that if the SVS lookup does not match a route the packet
        # is forwarded using the interface's routing table
        #
        p = (
            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
            / IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4)
            / UDP(sport=1234, dport=1234)
            / Raw(b"\xa5" * 100)
        )
        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)

        p = (
            Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
            / IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4)
            / UDP(sport=1234, dport=1234)
            / Raw(b"\xa5" * 100)
        )
        self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)

        #
        # dump the SVS configs
        #
        ss = self.vapi.svs_dump()

        self.assertEqual(ss[0].table_id, table_ids[0])
        self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
        self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
        self.assertEqual(ss[1].table_id, table_ids[1])
        self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
        self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)

        #
        # cleanup
        #
        self.vapi.svs_enable_disable(
            is_enable=0,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
            table_id=table_ids[0],
            sw_if_index=self.pg0.sw_if_index,
        )
        self.vapi.svs_enable_disable(
            is_enable=0,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
            table_id=table_ids[1],
            sw_if_index=self.pg1.sw_if_index,
        )

        for table_id in table_ids:
            for i in range(1, 4):
                self.vapi.svs_route_add_del(
                    is_add=0,
                    prefix="%d.0.0.0/8" % i,
                    table_id=table_id,
                    source_table_id=0,
                )

            self.vapi.svs_table_add_del(
                is_add=0,
                af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
                table_id=table_id,
            )

    def test_svs6(self):
        """Source VRF Select IP6"""

        #
        # packets destined out of the 3 non-default table interfaces
        #
        pkts_0 = [
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IPv6(src="2001:1::1", dst=self.pg1.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IPv6(src="2001:2::1", dst=self.pg2.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                / IPv6(src="2001:3::1", dst=self.pg3.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
        ]
        pkts_1 = [
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IPv6(src="2001:1::1", dst=self.pg1.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IPv6(src="2001:2::1", dst=self.pg2.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
            (
                Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
                / IPv6(src="2001:3::1", dst=self.pg3.remote_ip6)
                / UDP(sport=1234, dport=1234)
                / Raw(b"\xa5" * 100)
            ),
        ]

        #
        # before adding the SVS config all these packets are dropped when
        # ingressing on pg0 since pg0 is in the default table
        #
        for p in pkts_0:
            self.send_and_assert_no_replies(self.pg0, p * 1)

        #
        # Add table 1001 & 1002 into which we'll add the routes
        # determining the source VRF selection
        #
        table_ids = [101, 102]

        for table_id in table_ids:
            self.vapi.svs_table_add_del(
                is_add=1,
                af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
                table_id=table_id,
            )

            #
            # map X.0.0.0/8 to each SVS table for lookup in table X
            #
            for i in range(1, 4):
                self.vapi.svs_route_add_del(
                    is_add=1,
                    prefix="2001:%d::/32" % i,
                    table_id=table_id,
                    source_table_id=i,
                )

        #
        # Enable SVS on pg0/pg1 using table 1001/1002
        #
        self.vapi.svs_enable_disable(
            is_enable=1,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
            table_id=table_ids[0],
            sw_if_index=self.pg0.sw_if_index,
        )
        self.vapi.svs_enable_disable(
            is_enable=1,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
            table_id=table_ids[1],
            sw_if_index=self.pg1.sw_if_index,
        )

        #
        # now all the packets should be delivered out the respective interface
        #
        self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
        self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
        self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
        self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
        self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
        self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)

        #
        # check that if the SVS lookup does not match a route the packet
        # is forwarded using the interface's routing table
        #
        p = (
            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
            / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6)
            / UDP(sport=1234, dport=1234)
            / Raw(b"\xa5" * 100)
        )
        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)

        p = (
            Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
            / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6)
            / UDP(sport=1234, dport=1234)
            / Raw(b"\xa5" * 100)
        )
        self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)

        #
        # dump the SVS configs
        #
        ss = self.vapi.svs_dump()

        self.assertEqual(ss[0].table_id, table_ids[0])
        self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
        self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
        self.assertEqual(ss[1].table_id, table_ids[1])
        self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
        self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)

        #
        # cleanup
        #
        self.vapi.svs_enable_disable(
            is_enable=0,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
            table_id=table_ids[0],
            sw_if_index=self.pg0.sw_if_index,
        )
        self.vapi.svs_enable_disable(
            is_enable=0,
            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
            table_id=table_ids[1],
            sw_if_index=self.pg1.sw_if_index,
        )

        for table_id in table_ids:
            for i in range(1, 4):
                self.vapi.svs_route_add_del(
                    is_add=0,
                    prefix="2001:%d::/32" % i,
                    table_id=table_id,
                    source_table_id=0,
                )

            self.vapi.svs_table_add_del(
                is_add=0,
                af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
                table_id=table_id,
            )


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