CSIT-366 IPv4dp - baseline vhost-user

- Add test cases for vhost-user testing with
  NIC(X520)-to-VM(testpmd,virtio)

Change-Id: I598e70221b939b2b08aa324d2c98059eee8b6857
Signed-off-by: pmikus <pmikus@cisco.com>

1 files changed, 23 insertions, 1 deletions

diff --git a/resources/libraries/python/VhostUser.py b/resources/libraries/python/VhostUser.py
index 1a311e03fc..020df6100e 100644
--- a/resources/libraries/python/VhostUser.py
+++ b/resources/libraries/python/VhostUser.py
@@ -13,7 +13,7 @@
 
 """Vhost-user interfaces library."""
 
-from resources.libraries.python.VatExecutor import VatExecutor
+from resources.libraries.python.VatExecutor import VatExecutor, VatTerminal
 
 
 class VhostUser(object):
@@ -53,3 +53,25 @@ class VhostUser(object):
             if interface.get('socket') == socket:
                 return interface.get('name')
         return None
+
+    @staticmethod
+    def get_vhost_user_mac_by_sw_index(node, sw_if_index):
+        """Get Vhost-user l2_address for the given interface from actual
+        interface dump.
+
+        :param node: VPP node to get interface data from.
+        :param sw_if_index: Idx of the specific interface.
+        :type node: dict
+        :type sw_if_index: str
+        :return: l2_address of the given interface.
+        :rtype: str
+        """
+
+        with VatTerminal(node) as vat:
+            if_data = vat.vat_terminal_exec_cmd_from_template(
+                "interface_dump.vat")
+        for iface in if_data[0]:
+            if iface["sw_if_index"] == sw_if_index:
+                return ':'.join("%02x" % (b) for b in iface["l2_address"][:6])
+
+        return None