Add basic MPLS testcases

docs/testplan/MPLS-test-plan.md

@@ -0,0 +1,206 @@
+- [Overview](#overview)
+  * [Scope](#scope)
+  * [Testbed](#testbed)
+- [Setup configuration](#setup-configuration)
+    + [Setup of DUT switch](#setup-of-dut-switch)
+- [Test cases](#test-cases)
+  * [Test case \#1 - POP Label](#test-case-1---pop-label)
+    + [Test objective](#test-objective)
+    + [Test steps](#test-steps)
+  * [Test case \#2 - SWAP Label for single label](#test-case-2---swap-label-for-single-label)
+    + [Test objective](#test-objective-1)
+    + [Test steps](#test-steps-1)
+  * [Test case \#3 - PUSH Label](#test-case-3---push-label)
+    + [Test objective](#test-objective-2)
+    + [Test steps](#test-steps-2)
+  * [Test case \#4 - SWAP Label for multiple label stack](#test-case-4---swap-label-for-multiple-label-stack)
+    + [Test objective](#test-objective-3)
+    + [Test steps](#test-steps-3)
+
+## Overview
+This is Test Plan to test MPLS feature on SONiC. The test enables MPLS on interfaces, configures static LSPs and assumes all basic configurations including BGP routes are already preconfigured.
+
+### Scope
+The test is targeting a running SONiC system with basic functioning configuration.
+Purpose of the test is to verify MPLS on a SONiC system bringing up the ingress, transit or egress static LSP and forwarding the traffic correctly.
+
+### Testbed 
+T1
+
+## Setup configuration
+MPLS configuration will be set on DUT dynamically.
+
+#### Setup of DUT switch
+During testrun, Ansible will copy JSON file containing configuration for MPLS to DUT and push to SONiC APPL DB via swssconfig.
+
+JSON Sample:
+
+label_pop_routes.json
+
+```
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+            "nexthop": "10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+            "nexthop": "10.0.0.21",
+            "ifname": "Ethernet10",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]
+ ```
+
+ label_push_routes.json
+
+ ```
+ [
+    {
+        "ROUTE_TABLE:192.168.0.1": {
+            "nexthop": "1000001+10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]
+```
+label_swap_routes.json
+
+```
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+            "nexthop": "1000002+10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+            "nexthop": "1000004+10.0.0.21",
+            "ifname": "Ethernet10",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]
+```
+label_del_routes.json
+
+```
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "ROUTE_TABLE:192.168.0.1": {
+        },
+        "OP": "DEL"
+    }
+]
+```
+## Test cases
+
+Each testcase configures static LSP, sends traffic, captures on receving port and verifies appropriate LABEL action is applied on packet.
+
+### Test case \#1 - POP Label
+
+#### Test objective
+
+Verify that the MPLS label is removed on the received packet.
+
+#### Test steps
+- Enable MPLS on interfaces and configure pop label.
+- Send MPLS packet.
+- Capture the packet and verify that it is IP packet with MPLS removed.
+
+### Test case \#2 - SWAP Label for single label
+
+#### Test objective
+
+Verify that the MPLS label is swapped on the received packet.
+
+#### Test steps
+- Enable MPLS on interfaces and configure swap label for MPLS packet.
+- Send MPLS packet.
+- Capture the packet and verify that it is MPLS packet with label swapped as per configuration.
+
+### Test case \#3 - PUSH Label
+
+#### Test objective
+
+Verify that the MPLS label is pushed on the received packet.
+
+#### Test steps
+- Enable MPLS on interfaces and configure push label for MPLS packet.
+- Send IP packet.
+- Capture the packet and verify that it is MPLS packet with label added as per configuration. 
+
+
+### Test case \#4 - SWAP Label for multiple label stack
+
+#### Test objective
+
+Verify that the MPLS top label is swapped on the received packet.
+
+#### Test steps
+- Enable MPLS on interfaces and configure swap label for MPLS packet.
+- Send MPLS packet.
+- Capture the packet and verify that it is MPLS packet with label swapped as per configuration for the top label.
+

tests/mpls/configs/label_del_routes.json

@@ -0,0 +1,27 @@
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+        },
+        "OP": "DEL"
+    },
+    {
+        "ROUTE_TABLE:192.168.0.1": {
+        },
+        "OP": "DEL"
+    }
+]

tests/mpls/configs/label_pop_routes.json

@@ -0,0 +1,30 @@
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+            "nexthop": "10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+            "nexthop": "10.0.0.21",
+            "ifname": "Ethernet10",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]

tests/mpls/configs/label_push_routes.json

@@ -0,0 +1,16 @@
+[
+    {
+        "ROUTE_TABLE:192.168.0.1": {
+            "nexthop": "1000001+10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]

tests/mpls/configs/label_swap_routes.json

@@ -0,0 +1,30 @@
+[
+    {
+        "LABEL_ROUTE_TABLE:1000001": {
+            "nexthop": "1000002+10.0.0.51",
+            "ifname": "Ethernet25",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet10": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    },
+    {
+        "LABEL_ROUTE_TABLE:1000003": {
+            "nexthop": "1000004+10.0.0.21",
+            "ifname": "Ethernet10",
+            "weight": "1"
+        },
+        "OP": "SET"
+    },
+    {
+        "INTF_TABLE:Ethernet25": {
+            "mpls": "enable"
+        },
+        "OP": "SET"
+    }
+]