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# Copyright 2022
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from neutron_lib.agent.common import constants
def _replace_register(flow_params, register_number, register_value):
"""Replace value from flows to given register number
'register_value' key in dictionary will be replaced by register number
given by 'register_number'
:param flow_params: Dictionary containing defined flows
:param register_number: The number of register where value will be stored
:param register_value: Key to be replaced by register number
"""
try:
reg_port = flow_params[register_value]
del flow_params[register_value]
flow_params[f'reg{register_number:d}'] = reg_port
except KeyError:
pass
def create_reg_numbers(flow_params):
"""Replace reg_(port|net) values with defined register numbers"""
_replace_register(flow_params, constants.REG_PORT, constants.PORT_REG_NAME)
_replace_register(flow_params, constants.REG_NET, constants.NET_REG_NAME)
_replace_register(flow_params,
constants.REG_REMOTE_GROUP,
constants.REMOTE_GROUP_REG_NAME)
_replace_register(flow_params,
constants.REG_MIN_BW,
constants.MIN_BW_REG_NAME)
_replace_register(flow_params,
constants.REG_INGRESS_BW_LIMIT,
constants.INGRESS_BW_LIMIT_REG_NAME)
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