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# Copyright (c) 2021 PANTHEON.tech s.r.o.
# 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.

*** Settings ***
| Resource | resources/libraries/robot/shared/default.robot
| Resource | resources/libraries/robot/crypto/ipsec.robot
|
| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR | IP4FWD
| ... | BASE | IPSEC | IPSECSW | IPSECSPD | SPD_OUTBOUND | SPD_FLOW_CACHE
| ... | SPE_1 | NOCRYPTO
| ... | NIC_Intel-X710 | DRV_VFIO_PCI | RXQ_SIZE_0 | TXQ_SIZE_0
| ... | ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto
|
| Suite Setup | Setup suite topology interfaces | performance
| Suite Teardown | Tear down suite | performance
| Test Setup | Setup test | performance
| Test Teardown | Tear down test | performance
|
| Test Template | Local Template
|
| Documentation | *RFC4301: SPD lookup performance*
|
| ... | *[Top] Network Topologies:* TG-DUT1-TG 2-node circular topology
| ... | with single links between nodes.
| ... | *[Enc] Packet Encapsulations:* Eth-IPv4 for IPv4 routing.
| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing, two
| ... | static IPv4 /24 route entries, one SPD on each outbound interface in
| ... | each direction and ${rule amount} SPD entry(ies) in each SPD. Only
| ... | outbound traffic is matched and only the last rule is the matching
| ... | rule. SPD flow-cache for IPv4 outbound traffic is enabled.
| ... | DUT1 tested with ${nic_name}.\
| ... | *[Ver] TG verification:* TG finds and reports throughput NDR (Non Drop\
| ... | Rate) with zero packet loss tolerance and throughput PDR (Partial Drop\
| ... | Rate) with non-zero packet loss tolerance (LT) expressed in percentage\
| ... | of packets transmitted. NDR and PDR are discovered for different\
| ... | Ethernet L2 frame sizes using MLRsearch library.\
| ... | Test packets are generated by TG on links to DUTs. TG traffic profile
| ... | contains two L3 flow-groups (flow-group per direction, 253 flows per
| ... | flow-group) with all packets containing Ethernet header, IPv4 header
| ... | with IP protocol=61 and static payload. MAC addresses are matching MAC
| ... | addresses of the TG node interfaces. The DUT does SPD lookup with only
| ... | the lowest priority rule matching the traffic. The action of the
| ... | matching rule is BYPASS. No encryption or authentication is done.
| ... | *[Ref] Applicable standard specifications:* RFC4301 and RFC2544.

*** Variables ***
| @{plugins_to_enable}= | dpdk_plugin.so | perfmon_plugin.so
| ${crypto_type}= | ${None}
| ${nic_name}= | Intel-X710
| ${nic_driver}= | vfio-pci
| ${nic_rxq_size}= | 0
| ${nic_txq_size}= | 0
| ${nic_pfs}= | 2
| ${nic_vfs}= | 0
| ${osi_layer}= | L3
| ${overhead}= | ${0}
| ${remote_addr_range_ip4}= | 20.20.20.0/24
| ${local_addr_range_ip4}= | 10.10.10.0/24
| ${rule_amount}= | ${1}
# Traffic profile
| ${traffic_profile}= | trex-stl-2n-ethip4-ip4src253

*** Keywords ***
| Local Template
| | [Documentation]
| | ... | [Cfg] DUT runs IPv4 routing config with IPsec SPD rules.\
| | ... | Each DUT uses ${phy_cores} physical core(s) for worker threads.
| | ... | [Ver] Measure NDR and PDR values using MLRsearch algorithm.\
| |
| | ... | *Arguments:*
| | ... | - frame_size - Framesize in Bytes in integer or string (IMIX_v4_1).
| | ... | Type: integer, string
| | ... | - phy_cores - Number of physical cores. Type: integer
| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
| |
| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
| |
| | Set Test Variable | \${frame_size}
| |
| | Given Set Max Rate And Jumbo
| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
| | And Pre-initialize layer driver | ${nic_driver}
| | And Enable SPD flow cache IPv4 Outbound
| | And Apply startup configuration on all VPP DUTs
| | When Initialize layer driver | ${nic_driver}
| | And Initialize layer interface
| | And Initialize IPv4 forwarding in circular topology
| | And VPP IPsec create SPDs match nth entry
| | ... | ${dut1} | ${DUT1_${int}2}[0] | ${DUT1_${int}1}[0] | ${rule_amount}
| | ... | ${local_addr_range_ip4} | ${remote_addr_range_ip4}
| | Then Find NDR and PDR intervals using optimized search

*** Test Cases ***
| 64B-1c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 64B | 1C
| | frame_size=${64} | phy_cores=${1}

| 64B-2c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 64B | 2C
| | frame_size=${64} | phy_cores=${2}

| 64B-4c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 64B | 4C
| | frame_size=${64} | phy_cores=${4}

| 1518B-1c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 1518B | 1C
| | frame_size=${1518} | phy_cores=${1}

| 1518B-2c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 1518B | 2C
| | frame_size=${1518} | phy_cores=${2}

| 1518B-4c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 1518B | 4C
| | frame_size=${1518} | phy_cores=${4}

| 9000B-1c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 9000B | 1C
| | frame_size=${9000} | phy_cores=${1}

| 9000B-2c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 9000B | 2C
| | frame_size=${9000} | phy_cores=${2}

| 9000B-4c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | 9000B | 4C
| | frame_size=${9000} | phy_cores=${4}

| IMIX-1c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | IMIX | 1C
| | frame_size=IMIX_v4_1 | phy_cores=${1}

| IMIX-2c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | IMIX | 2C
| | frame_size=IMIX_v4_1 | phy_cores=${2}

| IMIX-4c-ethip4ipsec1spe-cache-ip4base-policy-outbound-nocrypto-ndrpdr
| | [Tags] | IMIX | 4C
| | frame_size=IMIX_v4_1 | phy_cores=${4}
ass="n">IP, UDP from scapy.layers.inet6 import IPv6 from scapy.volatile import RandMAC, RandIP from util import ppp, ppc class GreTunnelTypes: TT_L3 = 0 TT_TEB = 1 TT_ERSPAN = 2 class TestGRE(VppTestCase): """ GRE Test Case """ @classmethod def setUpClass(cls): super(TestGRE, cls).setUpClass() def setUp(self): super(TestGRE, self).setUp() # create 3 pg interfaces - set one in a non-default table. self.create_pg_interfaces(range(3)) self.tbl = VppIpTable(self, 1) self.tbl.add_vpp_config() self.pg1.set_table_ip4(1) for i in self.pg_interfaces: i.admin_up() self.pg0.config_ip4() self.pg0.resolve_arp() self.pg1.config_ip4() self.pg1.resolve_arp() self.pg2.config_ip6() self.pg2.resolve_ndp() def tearDown(self): for i in self.pg_interfaces: i.unconfig_ip4() i.unconfig_ip6() i.admin_down() self.pg1.set_table_ip4(0) super(TestGRE, self).tearDown() def create_stream_ip4(self, src_if, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_stream_ip6(self, src_if, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_4o4(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / IP(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_6o4(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_6o6(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IPv6(src=tunnel_src, dst=tunnel_dst) / GRE() / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_l2o4(self, src_if, tunnel_src, tunnel_dst): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / IP(src=str(RandIP()), dst=str(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_vlano4(self, src_if, tunnel_src, tunnel_dst, vlan): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / Dot1Q(vlan=vlan) / IP(src=str(RandIP()), dst=str(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def verify_tunneled_4o4(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = rx[GRE] rx_ip = rx_gre[IP] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) # IP processing post pop has decremented the TTL self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_tunneled_6o6(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IPv6] rx_ip = rx[IPv6] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = GRE(str(rx_ip[IPv6].payload)) rx_ip = rx_gre[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_tunneled_4o6(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] rx_ip = rx[IPv6] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = GRE(str(rx_ip[IPv6].payload)) tx_ip = tx[IP] rx_ip = rx_gre[IP] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_tunneled_6o4(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] rx_ip = rx[IP] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = GRE(str(rx_ip[IP].payload)) rx_ip = rx_gre[IPv6] tx_ip = tx[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_tunneled_l2o4(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = rx[GRE] rx_l2 = rx_gre[Ether] rx_ip = rx_l2[IP] tx_gre = tx[GRE] tx_l2 = tx_gre[Ether] tx_ip = tx_l2[IP] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) # bridged, not L3 forwarded, so no TTL decrement self.assertEqual(rx_ip.ttl, tx_ip.ttl) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_tunneled_vlano4(self, src_if, capture, sent, tunnel_src, tunnel_dst, vlan): try: self.assertEqual(len(capture), len(sent)) except: ppc("Unexpected packets captured:", capture) raise for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) rx_gre = rx[GRE] rx_l2 = rx_gre[Ether] rx_vlan = rx_l2[Dot1Q] rx_ip = rx_l2[IP] self.assertEqual(rx_vlan.vlan, vlan) tx_gre = tx[GRE] tx_l2 = tx_gre[Ether] tx_ip = tx_l2[IP] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) # bridged, not L3 forwarded, so no TTL decrement self.assertEqual(rx_ip.ttl, tx_ip.ttl) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_decapped_4o4(self, src_if, capture, sent): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] tx_gre = tx[GRE] tx_ip = tx_gre[IP] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) # IP processing post pop has decremented the TTL self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def verify_decapped_6o4(self, src_if, capture, sent): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IPv6] tx_gre = tx[GRE] tx_ip = tx_gre[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) except: self.logger.error(ppp("Rx:", rx)) self.logger.error(ppp("Tx:", tx)) raise def test_gre(self): """ GRE IPv4 tunnel Tests """ # # Create an L3 GRE tunnel. # - set it admin up # - assign an IP Addres # - Add a route via the tunnel # gre_if = VppGreInterface(self, self.pg0.local_ip4, "1.1.1.2") gre_if.add_vpp_config() # # The double create (create the same tunnel twice) should fail, # and we should still be able to use the original # try: gre_if.add_vpp_config() except Exception: pass else: self.fail("Double GRE tunnel add does not fail") gre_if.admin_up() gre_if.config_ip4() route_via_tun = VppIpRoute(self, "4.4.4.4", 32, [VppRoutePath("0.0.0.0", gre_if.sw_if_index)]) route_via_tun.add_vpp_config() # # Send a packet stream that is routed into the tunnel # - they are all dropped since the tunnel's desintation IP # is unresolved - or resolves via the default route - which # which is a drop. # tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4") self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg0.assert_nothing_captured( remark="GRE packets forwarded without DIP resolved") # # Add a route that resolves the tunnel's destination # route_tun_dst = VppIpRoute(self, "1.1.1.2", 32, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)]) route_tun_dst.add_vpp_config() # # Send a packet stream that is routed into the tunnel # - packets are GRE encapped # self.vapi.cli("clear trace") tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4") self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_4o4(self.pg0, rx, tx, self.pg0.local_ip4, "1.1.1.2") # # Send tunneled packets that match the created tunnel and # are decapped and forwarded # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_decapped_4o4(self.pg0, rx, tx) # # Send tunneled packets that do not match the tunnel's src # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg0, "1.1.1.3", self.pg0.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg0.assert_nothing_captured( remark="GRE packets forwarded despite no SRC address match") # # Configure IPv6 on the PG interface so we can route IPv6 # packets # self.pg0.config_ip6() self.pg0.resolve_ndp() # # Send IPv6 tunnel encapslated packets # - dropped since IPv6 is not enabled on the tunnel # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_6o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip6, self.pg0.remote_ip6) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg0.assert_nothing_captured(remark="IPv6 GRE packets forwarded " "despite IPv6 not enabled on tunnel") # # Enable IPv6 on the tunnel # gre_if.config_ip6() # # Send IPv6 tunnel encapslated packets # - forwarded since IPv6 is enabled on the tunnel # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_6o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip6, self.pg0.remote_ip6) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_decapped_6o4(self.pg0, rx, tx) # # Send v6 packets for v4 encap # route6_via_tun = VppIpRoute( self, "2001::1", 128, [VppRoutePath("::", gre_if.sw_if_index, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) route6_via_tun.add_vpp_config() tx = self.create_stream_ip6(self.pg0, "2001::2", "2001::1") rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_tunneled_6o4(self.pg0, rx, tx, self.pg0.local_ip4, "1.1.1.2") # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() route6_via_tun.remove_vpp_config() gre_if.remove_vpp_config() self.pg0.unconfig_ip6() def test_gre6(self): """ GRE IPv6 tunnel Tests """ self.pg1.config_ip6() self.pg1.resolve_ndp() # # Create an L3 GRE tunnel. # - set it admin up # - assign an IP Address # - Add a route via the tunnel # gre_if = VppGre6Interface(self, self.pg2.local_ip6, "1002::1") gre_if.add_vpp_config() gre_if.admin_up() gre_if.config_ip6() route_via_tun = VppIpRoute( self, "4004::1", 128, [VppRoutePath("0::0", gre_if.sw_if_index, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) route_via_tun.add_vpp_config() # # Send a packet stream that is routed into the tunnel # - they are all dropped since the tunnel's desintation IP # is unresolved - or resolves via the default route - which # which is a drop. # tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg2.assert_nothing_captured( remark="GRE packets forwarded without DIP resolved") # # Add a route that resolves the tunnel's destination # route_tun_dst = VppIpRoute( self, "1002::1", 128, [VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) route_tun_dst.add_vpp_config() # # Send a packet stream that is routed into the tunnel # - packets are GRE encapped # self.vapi.cli("clear trace") tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg2.get_capture(len(tx)) self.verify_tunneled_6o6(self.pg2, rx, tx, self.pg2.local_ip6, "1002::1") # # Test decap. decapped packets go out pg1 # tx = self.create_tunnel_stream_6o6(self.pg2, "1002::1", self.pg2.local_ip6, "2001::1", self.pg1.remote_ip6) self.vapi.cli("clear trace") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(len(tx)) # # RX'd packet is UDP over IPv6, test the GRE header is gone. # self.assertFalse(rx[0].haslayer(GRE)) self.assertEqual(rx[0][IPv6].dst, self.pg1.remote_ip6) # # Send v4 over v6 # route4_via_tun = VppIpRoute(self, "1.1.1.1", 32, [VppRoutePath("0.0.0.0", gre_if.sw_if_index)]) route4_via_tun.add_vpp_config() tx = self.create_stream_ip4(self.pg0, "1.1.1.2", "1.1.1.1") rx = self.send_and_expect(self.pg0, tx, self.pg2) self.verify_tunneled_4o6(self.pg0, rx, tx, self.pg2.local_ip6, "1002::1") # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() route4_via_tun.remove_vpp_config() gre_if.remove_vpp_config() self.pg2.unconfig_ip6() self.pg1.unconfig_ip6() def test_gre_vrf(self): """ GRE tunnel VRF Tests """ # # Create an L3 GRE tunnel whose destination is in the non-default # table. The underlay is thus non-default - the overlay is still # the default. # - set it admin up # - assign an IP Addres # gre_if = VppGreInterface(self, self.pg1.local_ip4, "2.2.2.2", outer_fib_id=1) gre_if.add_vpp_config() gre_if.admin_up() gre_if.config_ip4() # # Add a route via the tunnel - in the overlay # route_via_tun = VppIpRoute(self, "9.9.9.9", 32, [VppRoutePath("0.0.0.0", gre_if.sw_if_index)]) route_via_tun.add_vpp_config() # # Add a route that resolves the tunnel's destination - in the # underlay table # route_tun_dst = VppIpRoute(self, "2.2.2.2", 32, table_id=1, paths=[VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]) route_tun_dst.add_vpp_config() # # Send a packet stream that is routed into the tunnel # packets are sent in on pg0 which is in the default table # - packets are GRE encapped # self.vapi.cli("clear trace") tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "9.9.9.9") self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(len(tx)) self.verify_tunneled_4o4(self.pg1, rx, tx, self.pg1.local_ip4, "2.2.2.2") # # Send tunneled packets that match the created tunnel and # are decapped and forwarded. This tests the decap lookup # does not happen in the encap table # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg1, "2.2.2.2", self.pg1.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg1.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_decapped_4o4(self.pg0, rx, tx) # # Send tunneled packets that match the created tunnel and # but arrive on an interface that is not in the tunnel's # encap VRF, these are dropped # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg2, "2.2.2.2", self.pg1.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg1.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg0.assert_nothing_captured( remark="GRE decap packets in wrong VRF") # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() gre_if.remove_vpp_config() def test_gre_l2(self): """ GRE tunnel L2 Tests """ # # Add routes to resolve the tunnel destinations # route_tun1_dst = VppIpRoute(self, "2.2.2.2", 32, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)]) route_tun2_dst = VppIpRoute(self, "2.2.2.3", 32, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)]) route_tun1_dst.add_vpp_config() route_tun2_dst.add_vpp_config() # # Create 2 L2 GRE tunnels and x-connect them # gre_if1 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.2", type=GreTunnelTypes.TT_TEB) gre_if2 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.3", type=GreTunnelTypes.TT_TEB) gre_if1.add_vpp_config() gre_if2.add_vpp_config() gre_if1.admin_up() gre_if2.admin_up() self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index, gre_if2.sw_if_index, enable=1) self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index, gre_if1.sw_if_index, enable=1) # # Send in tunnel encapped L2. expect out tunnel encapped L2 # in both directions # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_l2o4(self.pg0, "2.2.2.2", self.pg0.local_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_l2o4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.3") self.vapi.cli("clear trace") tx = self.create_tunnel_stream_l2o4(self.pg0, "2.2.2.3", self.pg0.local_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_l2o4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2") self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index, gre_if2.sw_if_index, enable=0) self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index, gre_if1.sw_if_index, enable=0) # # Create a VLAN sub-interfaces on the GRE TEB interfaces # then x-connect them # gre_if_11 = VppDot1QSubint(self, gre_if1, 11) gre_if_12 = VppDot1QSubint(self, gre_if2, 12) # gre_if_11.add_vpp_config() # gre_if_12.add_vpp_config() gre_if_11.admin_up() gre_if_12.admin_up() self.vapi.sw_interface_set_l2_xconnect(gre_if_11.sw_if_index, gre_if_12.sw_if_index, enable=1) self.vapi.sw_interface_set_l2_xconnect(gre_if_12.sw_if_index, gre_if_11.sw_if_index, enable=1) # # Configure both to pop thier respective VLAN tags, # so that during the x-coonect they will subsequently push # self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_12.sw_if_index, L2_VTR_OP.L2_POP_1, 12) self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_11.sw_if_index, L2_VTR_OP.L2_POP_1, 11) # # Send traffic in both directiond - expect the VLAN tags to # be swapped. # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_vlano4(self.pg0, "2.2.2.2", self.pg0.local_ip4, 11) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_vlano4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.3", 12) self.vapi.cli("clear trace") tx = self.create_tunnel_stream_vlano4(self.pg0, "2.2.2.3", self.pg0.local_ip4, 12) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_vlano4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2", 11) # # Cleanup Test resources # gre_if_11.remove_vpp_config() gre_if_12.remove_vpp_config() gre_if1.remove_vpp_config() gre_if2.remove_vpp_config() route_tun1_dst.add_vpp_config() route_tun2_dst.add_vpp_config() if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)