Add 1.6t support to sonic-xcvrd (#644)

* Add 1.6t support to sonic-xcvrd

* Add test coverage to test_xcvrd.py

Author: bobby-nexthop

sonic-xcvrd/tests/test_xcvrd.py

@@ -2434,6 +2434,8 @@ def get_application(lane):
         assert task.is_cmis_application_update_required(mock_xcvr_api, app_new, host_lanes_mask) == expected
 
     @pytest.mark.parametrize("ifname, expected", [
+        ('1.6TBASE-CR8 (Clause179)', 1600000),
+        ('1.6TAUI-8 (Annex176E)', 1600000),
         ('800G L C2M', 800000),
         ('400G CR8', 400000),
         ('200GBASE-CR4 (Clause 136)', 200000),

sonic-xcvrd/xcvrd/xcvrd.py

@@ -173,7 +173,9 @@ def get_interface_speed(ifname):
     """
     # see HOST_ELECTRICAL_INTERFACE of sff8024.py
     speed = 0
-    if '800G' in ifname:
+    if '1.6T' in ifname:
+        speed = 1600000
+    elif '800G' in ifname:
         speed = 800000
     elif '400G' in ifname:
         speed = 400000