Modify sweep ping test cases

- Write separate sweep ping test cases for jumbo frames
- Compute sweep ping end size from reported MTU on DUT interface
- Set MTU on TG according to MTU on DUT interface
- Log VPP packet traces on IPv4 and IPv6 tests failure
- Remove VM_ENV tag from sweep ping test cases for jumbo frames

Change-Id: I47aa7977bcff9c4366c67578aef542924a1d055b
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>

1 files changed, 20 insertions, 4 deletions

diff --git a/resources/libraries/python/topology.py b/resources/libraries/python/topology.py
index e2c069fc98..75542ad070 100644
--- a/resources/libraries/python/topology.py
+++ b/resources/libraries/python/topology.py
@@ -257,6 +257,7 @@ class Topology(object):
                         format(ifc, if_mac))
             ifc['name'] = interface_dict["interface_name"]
             ifc['vpp_sw_index'] = interface_dict["sw_if_index"]
+            ifc['mtu'] = interface_dict["mtu"]
 
     def update_vpp_interface_data_on_node(self, node):
         """Update vpp generated interface data for a given node in DICT__nodes
@@ -347,14 +348,31 @@ class Topology(object):
         """
         for port in node['interfaces'].values():
             port_name = port.get('name')
-            if port_name is None:
-                continue
             if port_name == interface:
                 return port.get('vpp_sw_index')
 
         return None
 
     @staticmethod
+    def get_interface_mtu(node, interface):
+        """Get interface MTU.
+
+        Returns physical layer MTU (max. size of Ethernet frame).
+        :param node: Node to get interface MTU on.
+        :param interface: Interface name.
+        :type node: dict
+        :type interface: str
+        :return: MTU or None if not found.
+        :rtype: int
+        """
+        for port in node['interfaces'].values():
+            port_name = port.get('name')
+            if port_name == interface:
+                return port.get('mtu')
+
+        return None
+
+    @staticmethod
     def get_interface_mac_by_port_key(node, port_key):
         """Get MAC address for the interface based on port key.
 
@@ -382,8 +400,6 @@ class Topology(object):
         """
         for port in node['interfaces'].values():
             port_name = port.get('name')
-            if port_name is None:
-                continue
             if port_name == interface:
                 return port.get('mac_address')