vpe: convert DPKD_PORT to LINK ID

http://dpdk.org/doc/guides/sample_app_ug/ip_pipeline.html#application-resources-present-in-the-configuration-file

LINK instances are created implicitly based on the PORT_MASK application startup
argument. LINK0 is the first port enabled in the PORT_MASK, port 1 is the next one,
etc. The LINK ID is different than the DPDK PMD-level NIC port ID, which is the actual
 position in the bitmask mentioned above. For example, if bit 5 is the first bit set
in the bitmask, then LINK0 is having the PMD ID of 5. This mechanism creates a
contiguous LINK ID space and isolates the configuration file against changes in the
board PCIe slots where NICs are plugged in.

Change-Id: I6e449272cfcfb2b2a75c246f7f569e3f923da245
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
index 1abc53688..6dc6df0d8 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
@@ -163,6 +163,11 @@ class TestConfigCreate(unittest.TestCase):
         self.assertEqual(config_create.downlink_ports, ['xe1'])
         self.assertEqual(config_create.socket, 2)
 
+    def test_dpdk_port_to_link_id(self):
+        vnfd_helper = VnfdHelper(self.VNFD_0)
+        config_create = ConfigCreate(vnfd_helper, 2)
+        self.assertEqual(config_create.dpdk_port_to_link_id_map, {'xe0': 0, 'xe1': 1})
+
     def test_vpe_initialize(self):
         vnfd_helper = VnfdHelper(self.VNFD_0)
         config_create = ConfigCreate(vnfd_helper, 2)