tools: add helper function to print family

Ticket: #4127810
Testing:
2024-11-20T01:52:10.073 frr_zebra:netlink_neigh_update_msg_encode
{'mac': '00:00:00:00:00:00', 'ip': '27.0.0.4', 'nhg': 0, 'flags': 2,
'state': 192, 'family': 'bridge', 'type': 0, 'op': 23}

Signed-off-by: Chirag Shah <[email protected]>

tools/frr_babeltrace.py

@@ -79,6 +79,27 @@ def parse_event(event, field_parsers):
         else:
             field_info[field] = event.get(field)
     print(event.name, field_info)
+
+def print_family_str(field_val):
+    """
+    pretty print kernel family to string
+    """
+    if field_val == socket.AF_INET:
+        cmd_str = "ipv4"
+    elif field_val == socket.AF_INET6:
+        cmd_str = "ipv6"
+    elif field_val == socket.AF_BRIDGE:
+        cmd_str = "bridge"
+    elif field_val == 128: # RTNL_FAMILY_IPMR:
+        cmd_str = "ipv4MR"
+    elif field_val == 129: # RTNL_FAMILY_IP6MR:
+        cmd_str = "ipv6MR"
+    else:
+        cmd_str = "Invalid family"
+
+    return cmd_str
+
+
 ############################ common parsers - end #############################
 
 ############################ evpn parsers - start #############################