CSIT-18: Add GRE tunnel libraries and tests.

Change-Id: I91ccd65a26ea1782611bccc3badd91e64366a162
Signed-off-by: Matej Klotton <mklotton@cisco.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/tests/suites/gre/gre_encapsulation.robot b/tests/suites/gre/gre_encapsulation.robot
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+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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/default.robot
+| Resource | resources/libraries/robot/testing_path.robot
+| Resource | resources/libraries/robot/ipv4.robot
+| Resource | resources/libraries/robot/gre.robot
+| Resource | resources/libraries/robot/traffic.robot
+| Library  | resources.libraries.python.IPUtil
+| Library  | resources.libraries.python.Trace
+| Force Tags | VM_ENV | HW_ENV
+| Test Setup | Run Keywords | Setup all DUTs before test
+| ...        | AND          | Setup all TGs before traffic script
+| Test Teardown | Show Packet Trace on All DUTs | ${nodes}
+| Documentation | *GRE test suite.*
+| ...
+| ... | Test suite uses 2-node topology TG - DUT1 - TG with two links
+| ... | between nodes as well as 3-node topology TG - DUT1 - DUT2 - TG
+| ... | with one link between nodes. Test packets are sent from TG to DUT1.
+| ... | DUT1 encapsulate packet into GRE and send out from other interface.
+| ... | Traffic scripts check received MAC headers, IP headers and GRE headers.
+
+*** Variables ***
+| ${net1_address}= | 192.168.0.0
+| ${net1_host_address}= | 192.168.0.100
+| ${net1_gw_address}= | 192.168.0.1
+| ${net2_address}= | 192.168.2.0
+| ${net2_host_address}= | 192.168.2.100
+| ${net2_gw_address}= | 192.168.2.1
+| ${dut1_ip_address}= | 192.168.1.1
+| ${dut2_ip_address}= | 192.168.1.2
+| ${dut1_gre_ip}= | 172.16.0.1
+| ${dut2_gre_ip}= | 172.16.0.2
+| ${prefix}= | 24
+
+*** Test Cases ***
+| VPP can route IPv4 traffic from GRE tunnel
+| | [Tags] | 3_NODE_SINGLE_LINK_TOPO | 3_NODE_DOUBLE_LINK_TOPO
+| | [Documentation] | Create GRE configuration on 2 DUTs, send IP traffic and
+| | ...             | check IP is not changed.
+| | Given Path for 3-node testing is set | ${nodes['TG']} | ${nodes['DUT1']}
+| |       ... | ${nodes['DUT2']} | ${nodes['TG']}
+| | And   Interfaces in 3-node path are up
+| | And   IP addresses are set on interfaces
+| |       ... | ${dut1_node} | ${dut1_to_dut2} | ${dut1_ip_address} | ${prefix}
+| |       ... | ${dut1_node} | ${dut1_to_tg}   | ${net1_gw_address} | ${prefix}
+| |       ... | ${dut2_node} | ${dut2_to_dut1} | ${dut2_ip_address} | ${prefix}
+| |       ... | ${dut2_node} | ${dut2_to_tg}   | ${net2_gw_address} | ${prefix}
+| | And   VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${dut2_ip_address}
+| | And   VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${dut1_ip_address}
+| | And   Add Arp On Dut | ${dut2_node} | ${dut2_to_tg} | ${net2_host_address}
+| |       ... | ${tg_to_dut2_mac}
+| | ${dut1_gre_interface} | ${dut1_gre_index}=
+| | | ... | When GRE tunnel interface is created and up
+| | |     |      ... | ${dut1_node} | ${dut1_ip_address} | ${dut2_ip_address}
+| | ${dut2_gre_interface} | ${dut2_gre_index}=
+| | | ... | And  GRE tunnel interface is created and up
+| | |     |      ... | ${dut2_node} | ${dut2_ip_address} | ${dut1_ip_address}
+| | And  IP addresses are set on interfaces
+| |      ... | ${dut1_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix}
+| |      ... | ${dut2_node} | ${dut2_gre_index} | ${dut2_gre_ip} | ${prefix}
+| | And  Vpp Route Add | ${dut1_node} | ${net2_address} | ${prefix}
+| |      ... | ${dut2_gre_ip} | ${dut1_gre_index}
+| | Then Send Packet And Check Headers | ${tg_node}
+| |      ... | ${net1_host_address} | ${net2_host_address}
+| |      ... | ${tg_to_dut1} | ${tg_to_dut1_mac} | ${dut1_to_tg_mac}
+| |      ... | ${tg_to_dut2} | ${dut2_to_tg_mac} | ${tg_to_dut2_mac}
+
+
+| VPP can encapsulate IPv4 traffic in GRE
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO
+| | [Documentation] | Create GRE configuration on DUT, send IP traffic and
+| | ...             | check IP is correctly encapsulate into GRE.
+| | Given Path for 2-node testing is set
+| |       ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And   Interfaces in 2-node path are up
+| | And   IP addresses are set on interfaces
+| |       ... | ${dut_node} | ${dut_to_tg_if2} | ${dut1_ip_address} | ${prefix}
+| |       ... | ${dut_node} | ${dut_to_tg_if1} | ${net1_gw_address} | ${prefix}
+| | And  Add Arp On Dut | ${dut_node} | ${dut_to_tg_if2} | ${dut2_ip_address}
+| |      ... | ${tg_to_dut_if2_mac}
+| | ${dut1_gre_interface} | ${dut1_gre_index}=
+| | | ... | When GRE tunnel interface is created and up
+| | |     |      ... | ${dut_node} | ${dut1_ip_address} | ${dut2_ip_address}
+| | And  IP addresses are set on interfaces
+| |      ... | ${dut_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix}
+| | And  Vpp Route Add | ${dut_node} | ${net2_address} | ${prefix}
+| |      ... | ${dut2_gre_ip} | ${dut1_gre_index}
+| | Then Send ICMPv4 and check received GRE header
+| |      ... | ${tg_node} | ${tg_to_dut_if1} | ${tg_to_dut_if2}
+| |      ... | ${dut_to_tg_if1_mac} | ${tg_to_dut_if2_mac}
+| |      ... | ${net1_host_address} | ${net2_host_address}
+| |      ... | ${dut1_ip_address} | ${dut2_ip_address}
+
+
+| VPP can decapsulate IPv4 traffic in GRE
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO
+| | [Documentation] | Create GRE configuration on DUT, send GRE encapsulated
+| | ...             | traffic and  check IP is received without GRE headers.
+| | Given Path for 2-node testing is set
+| |       ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And   Interfaces in 2-node path are up
+| | And   IP addresses are set on interfaces
+| |       ... | ${dut_node} | ${dut_to_tg_if2} | ${dut1_ip_address} | ${prefix}
+| |       ... | ${dut_node} | ${dut_to_tg_if1} | ${net1_gw_address} | ${prefix}
+| | And  Add Arp On Dut | ${dut_node} | ${dut_to_tg_if1} | ${net1_host_address}
+| |      ... | ${tg_to_dut_if1_mac}
+| | ${dut1_gre_interface} | ${dut1_gre_index}=
+| | | ... | When GRE tunnel interface is created and up
+| | |     |      ... | ${dut_node} | ${dut1_ip_address} | ${dut2_ip_address}
+| | And  IP addresses are set on interfaces
+| |      ... | ${dut_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix}
+| | Then Send GRE and check received ICMPv4 header
+| |      ... | ${tg_node} | ${tg_to_dut_if2} | ${tg_to_dut_if1}
+| |      ... | ${dut_to_tg_if2_mac} | ${tg_to_dut_if1_mac}
+| |      ... | ${net2_host_address} | ${net1_host_address}
+| |      ... | ${dut2_ip_address} | ${dut1_ip_address}