Expand support for backend ethernet

IBManager will continue to be used for a new ethernet-backend offering from AzureHPC. While the key name remains the same (IPoIB_data), the interfaces will be of the format ethXX. Removing the check that skips anything that isn't ibXX. We are not at the risk of proceeding for any other nics since the IPoIB_data will only have the backend RDMA ones, and despite reading from the system for the loop, we match it against the array parsed from the IPoIB_data KVP. IB interfaces have padded virtual macs, non-IB interfaces won't. Adding if-else to only do the padded-octet check for IB. Everything else will use the standard 6-octet pattern.

azurelinuxagent/pa/rdma/rdma.py

@@ -368,10 +368,6 @@ def update_iboip_interfaces(self, mac_ip_array):
         count = 0
 
         for nic in nics:
-            # look for IBoIP interface of format ibXXX
-            if not re.match(r"ib\w+", nic):
-                continue
-
             mac_addr = None
             with open(os.path.join(net_dir, nic, "address")) as address_file:
                 mac_addr = address_file.read()
@@ -382,7 +378,11 @@ def update_iboip_interfaces(self, mac_ip_array):
 
             mac_addr = mac_addr.upper()
 
-            match = re.match(r".+(\w\w):(\w\w):(\w\w):\w\w:\w\w:(\w\w):(\w\w):(\w\w)\n", mac_addr)
+            # if this is an IB interface, match IB-specific regex
+            if re.match(r"ib\w+", nic):
+                match = re.match(r".+(\w\w):(\w\w):(\w\w):\w\w:\w\w:(\w\w):(\w\w):(\w\w)\n", mac_addr)
+            else:
+                match = re.match(r"^(\w\w):(\w\w):(\w\w):(\w\w):(\w\w):(\w\w)$", mac_addr)
             if not match:
                 logger.error("RDMA: failed to parse address for device {0} address {1}".format(nic, mac_addr))
                 continue