Add support to configure routed subinterface in short name and long name

format
Update "show subniterface status" to reflect subinterface in user
configured long name and short name format.

Author: preetham-singh

config/main.py

@@ -20,7 +20,7 @@
 from portconfig import get_child_ports
 from socket import AF_INET, AF_INET6
 from sonic_py_common import device_info, multi_asic
-from sonic_py_common.interface import get_interface_table_name, get_port_table_name
+from sonic_py_common.interface import get_interface_table_name, get_port_table_name, intf_get_longname
 from utilities_common import util_base
 from swsscommon.swsscommon import SonicV2Connector, ConfigDBConnector
 from utilities_common.db import Db
@@ -5846,6 +5846,125 @@ def smoothing_interval(interval, rates_type):
 for plugin in helper.load_plugins(plugins):
     helper.register_plugin(plugin, config)
 
+#
+# 'subinterface' group ('config subinterface ...')
+#
+@config.group()
+@click.pass_context
+@click.option('-s', '--redis-unix-socket-path', help='unix socket path for redis connection')
+def subinterface(ctx, redis_unix_socket_path):
+    """subinterface-related configuration tasks"""
+    kwargs = {}
+    if redis_unix_socket_path:
+        kwargs['unix_socket_path'] = redis_unix_socket_path
+    config_db = ConfigDBConnector(**kwargs)
+    config_db.connect(wait_for_init=False)
+    ctx.obj = {'db': config_db}
+    pass
+
+def subintf_vlan_check(config_db, parent_intf, vlan):
+    subintf_db = config_db.get_table('VLAN_SUB_INTERFACE')
+    subintf_names = [k for k in subintf_db if type(k) != tuple]
+    for subintf in subintf_names:
+        sub_intf_sep_idx = subintf.find(VLAN_SUB_INTERFACE_SEPARATOR)
+        if sub_intf_sep_idx == -1:
+            continue
+        if parent_intf == subintf[:sub_intf_sep_idx]:
+            if 'vlan' in subintf_db[subintf]:
+                if str(vlan) == subintf_db[subintf]['vlan']:
+                    return True
+            else:
+                vlan_id = subintf[sub_intf_sep_idx + 1:]
+                if str(vlan) == vlan_id:
+                    return True
+    return False
+
+@subinterface.command('add')
+@click.argument('subinterface_name', metavar='<subinterface_name>', required=True)
+@click.argument('vid', metavar='<vid>', required=False, type=click.IntRange(1,4094))
+@click.pass_context
+def add_subinterface(ctx, subinterface_name, vid):
+    sub_intf_sep_idx = subinterface_name.find(VLAN_SUB_INTERFACE_SEPARATOR)
+    if sub_intf_sep_idx == -1:
+        ctx.fail("{} is invalid vlan subinterface".format(subinterface_name))
+
+    interface_alias = subinterface_name[:sub_intf_sep_idx]
+    vlan_id = subinterface_name[sub_intf_sep_idx + 1:]
+    if interface_alias is None:
+        ctx.fail("{} invalid subinterface".format(interface_alias))
+
+    if interface_alias.startswith("Po") is True:
+        intf_table_name = CFG_PORTCHANNEL_PREFIX
+    elif interface_alias.startswith("Eth") is True:
+        intf_table_name = 'PORT'
+
+    config_db = ctx.obj['db']
+    port_dict = config_db.get_table(intf_table_name)
+    if interface_alias is not None:
+        if not port_dict:
+            ctx.fail("{} parent interface not found. {} table none".format(interface_alias, intf_table_name))
+        if intf_get_longname(interface_alias) not in port_dict.keys():
+            ctx.fail("{} parent interface not found".format(subinterface_name))
+
+    # Validate if parent is portchannel member
+    portchannel_member_table = config_db.get_table('PORTCHANNEL_MEMBER')
+    if interface_is_in_portchannel(portchannel_member_table, interface_alias):
+        ctx.fail("{} is configured as a member of portchannel. Cannot configure subinterface"
+                .format(interface_alias))
+
+    # Validate if parent is vlan member
+    vlan_member_table = config_db.get_table('VLAN_MEMBER')
+    if interface_is_in_vlan(vlan_member_table, interface_alias):
+        ctx.fail("{} is configured as a member of vlan. Cannot configure subinterface"
+                .format(interface_alias))
+
+    sub_intfs = [k for k,v in config_db.get_table('VLAN_SUB_INTERFACE').items() if type(k) != tuple]
+    if subinterface_name in sub_intfs:
+        ctx.fail("{} already exists".format(subinterface_name))
+
+    subintf_dict = {}
+    if vid is not None:
+        subintf_dict.update({"vlan" : vid})
+
+    if subintf_vlan_check(config_db, intf_get_longname(interface_alias), vid) is True:
+        ctx.fail("Vlan {} encap already configured on other subinterface on {}".format(vid, interface_alias))
+
+    subintf_dict.update({"admin_status" : "up"})
+    config_db.set_entry('VLAN_SUB_INTERFACE', subinterface_name, subintf_dict)
+
+@subinterface.command('del')
+@click.argument('subinterface_name', metavar='<subinterface_name>', required=True)
+@click.pass_context
+def del_subinterface(ctx, subinterface_name):
+    sub_intf_sep_idx = subinterface_name.find(VLAN_SUB_INTERFACE_SEPARATOR)
+    if sub_intf_sep_idx == -1:
+        ctx.fail("{} is invalid vlan subinterface".format(subinterface_name))
+
+    config_db = ctx.obj['db']
+    #subinterface_name = subintf_get_shortname(subinterface_name)
+    if interface_name_is_valid(config_db, subinterface_name) is False:
+        ctx.fail("{} is invalid ".format(subinterface_name))
+
+    subintf_config_db = config_db.get_table('VLAN_SUB_INTERFACE')
+    sub_intfs = [k for k,v in subintf_config_db.items() if type(k) != tuple]
+    if subinterface_name not in sub_intfs:
+        ctx.fail("{} does not exists".format(subinterface_name))
+        
+    ips = {}
+    ips = [ k[1] for k in config_db.get_table('VLAN_SUB_INTERFACE') if type(k) == tuple and k[0] == subinterface_name ]
+    for ip in ips:
+        try:
+            ipaddress.ip_network(ip, strict=False)
+            config_db.set_entry('VLAN_SUB_INTERFACE', (subinterface_name, ip), None)
+        except ValueError:
+            ctx.fail("Invalid ip {} found on interface {}".format(ip, subinterface_name))
+
+    subintf_config_db = config_db.get_table('INTERFACE')
+    ips = [ k[1] for k in subintf_config_db if type(k) == tuple and k[0] == subinterface_name ]
+    for ip in ips:
+        config_db.set_entry('INTERFACE', (subinterface_name, ip), None)
+
+    config_db.set_entry('VLAN_SUB_INTERFACE', subinterface_name, None)
 
 if __name__ == '__main__':
     config()

scripts/intfutil

@@ -10,6 +10,7 @@ from tabulate import tabulate
 from utilities_common import constants
 from utilities_common import multi_asic as multi_asic_util
 from utilities_common.intf_filter import parse_interface_in_filter
+from sonic_py_common.interface import intf_get_longname
 
 # mock the redis for unit test purposes #
 try:
@@ -313,12 +314,13 @@ def appl_db_portchannel_status_get(appl_db, config_db, po_name, status_type, por
 def appl_db_sub_intf_status_get(appl_db, config_db, front_panel_ports_list, portchannel_speed_dict, sub_intf_name, status_type):
     sub_intf_sep_idx = sub_intf_name.find(VLAN_SUB_INTERFACE_SEPARATOR)
     if sub_intf_sep_idx != -1:
-        parent_port_name = sub_intf_name[:sub_intf_sep_idx]
+        parent_port_name = intf_get_longname(sub_intf_name[:sub_intf_sep_idx])
         vlan_id = sub_intf_name[sub_intf_sep_idx + 1:]
 
         full_intf_table_name = "INTF_TABLE" + ":" + sub_intf_name
 
         if status_type == "vlan":
+            vlan_id = appl_db.get(appl_db.APPL_DB, full_intf_table_name, status_type)
             return vlan_id
 
         if status_type == "admin_status":