feat(core): Multilink backend

Signed-off-by: pmikus <peter.mikus@protonmail.ch>
Change-Id: I8d168979ab9722e0056e97edb228f29cbfa245e3

1 files changed, 97 insertions, 0 deletions

diff --git a/resources/libraries/python/IPTopology.py b/resources/libraries/python/IPTopology.py
new file mode 100644
index 0000000000..1e5a18042d
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+++ b/resources/libraries/python/IPTopology.py
@@ -0,0 +1,97 @@
+# Copyright (c) 2023 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.
+
+"""IP Topology Library."""
+
+from robot.libraries.BuiltIn import BuiltIn
+
+from resources.libraries.python.IPUtil import IPUtil
+
+
+class IPTopology:
+    """IP Topology Library."""
+
+    @staticmethod
+    def initialize_ipv4_forwarding(count=1, parallel_links=1):
+        """
+        Custom setup of IPv4 forwarding with scalability of IP routes on all
+        DUT nodes in 2-node / 3-node circular topology.
+
+        :param count: Number of routes to configure.
+        :param parallel_links: Number of parallel links to configure.
+        :type count: int
+        :type parallel_links: int
+        """
+        topology = BuiltIn().get_variable_value("&{topology_info}")
+        dut = topology["duts"][-1]
+        ifl = BuiltIn().get_variable_value("${int}")
+
+        for l, i in zip(range(parallel_links), range(1, parallel_links*2, 2)):
+            dut1_int1 = BuiltIn().get_variable_value(f"${{DUT1_{ifl}{i}}}[0]")
+            dut1_int2 = BuiltIn().get_variable_value(f"${{DUT1_{ifl}{i+1}}}[0]")
+            dut_int1 = BuiltIn().get_variable_value(f"${{{dut}_{ifl}{i}}}[0]")
+            dut_int2 = BuiltIn().get_variable_value(f"${{{dut}_{ifl}{i+1}}}[0]")
+
+            IPUtil.vpp_add_ip_neighbor(
+                topology["DUT1"], dut1_int1, f"1.{l}.1.1",
+                topology[f"TG_pf{i}_mac"][0]
+            )
+            if dut == "DUT2":
+                dut_mac1 = BuiltIn().get_variable_value(
+                    f"${{{dut}_{ifl}{i}_mac}}[0]"
+                )
+                IPUtil.vpp_add_ip_neighbor(
+                    topology["DUT1"], dut1_int2, f"3.{l}.3.2", dut_mac1
+                )
+                dut_mac2 = BuiltIn().get_variable_value(
+                    f"${{DUT1_{ifl}{i+1}_mac}}[0]"
+                )
+                IPUtil.vpp_add_ip_neighbor(
+                    topology["DUT2"], dut_int1, f"3.{l}.3.1", dut_mac2
+                )
+            IPUtil.vpp_add_ip_neighbor(
+                topology[dut], dut_int2, f"2.{l}.2.1",
+                topology[f"TG_pf{i}_mac"][0]
+            )
+
+            IPUtil.vpp_interface_set_ip_address(
+                topology["DUT1"], dut1_int1, f"1.{l}.1.2", 30
+            )
+            if dut == "DUT2":
+                IPUtil.vpp_interface_set_ip_address(
+                    topology["DUT1"], dut1_int2, f"3.{l}.3.1", 30
+                )
+                IPUtil.vpp_interface_set_ip_address(
+                    topology["DUT2"], dut_int1, f"3.{l}.3.2", 30
+                )
+            IPUtil.vpp_interface_set_ip_address(
+                topology[dut], dut_int2, f"2.{l}.2.2", 30
+            )
+
+            IPUtil.vpp_route_add(
+                topology["DUT1"], f"{i}0.0.0.0", 32, gateway=f"1.{l}.1.1",
+                interface=dut1_int1, count=count
+            )
+            if dut == "DUT2":
+                IPUtil.vpp_route_add(
+                    topology["DUT1"], f"{i+1}0.0.0.0", 32, gateway=f"3.{l}.3.2",
+                    interface=dut1_int2, count=count
+                )
+                IPUtil.vpp_route_add(
+                    topology["DUT2"], f"{i}0.0.0.0", 32, gateway=f"3.{l}.3.1",
+                    interface=dut_int1, count=count
+                )
+            IPUtil.vpp_route_add(
+                topology[dut], f"{i+1}0.0.0.0", 32, gateway=f"2.{l}.2.1",
+                interface=dut_int2, count=count
+            )