ce4b645178
Add a new tool packetforge to extras. This tool is to support generic flow. Packetforge is a library to translate naming or json profile format flow pattern to the required input of generic flow, i.e. spec and mask. Using python script flow_create.py, it can add and enable a new flow rule for an interface via flow VAPI, and can delete an existed flow rule as well. Command examples are shown below. Json profile examples can be found in ./parsegraph/samples. Naming format input: python flow_create.py --add -p "mac()/ipv4(src=1.1.1.1,dst=2.2.2.2)/udp()" -a "redirect-to-queue 3" -i 1 python flow_create.py --del -i 1 -I 0 Json profile format input: python flow_create.py -f "./flow_rule_examples/mac_ipv4.json" -i 1 With this command, flow rule can be added or deleted, and the flow entry can be listed with "show flow entry" command in VPP CLI. Packetforge is based on a parsegraph. The parsegraph can be built by users. A Spec can be found in ./parsegraph as guidance. More details about packetforge are in README file. Type: feature Signed-off-by: Ting Xu <ting.xu@intel.com> Change-Id: Ia9f539741c5dca27ff236f2bcc493c5dd48c0df1
87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
# Copyright (c) 2022 Intel and/or its affiliates.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import ExpressionConverter
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from InputFormat import *
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class NodeField:
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def __init__(self):
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self.DefaultValue = None
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self.IsReserved = None
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self.IsReadonly = None
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self.IsAutoIncrease = None
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self.IsIncreaseLength = None
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self.Optional = None
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self.VariableSize = None
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def Create(token):
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if token == None:
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return None
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field = NodeField()
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if token["name"] == None:
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return None
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if token["size"] == None:
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return None
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# name
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field.Name = token["name"]
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if field.Name == "reserved":
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field.IsReserved = True
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inputFormat = InputFormat.bytearray
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res, u16 = ExpressionConverter.ToNum(token["size"])
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# size
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if res:
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field.Size = u16
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if u16 <= 8:
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inputFormat = InputFormat.u8
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elif u16 <= 16:
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inputFormat = InputFormat.u16
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elif u16 <= 32:
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inputFormat = InputFormat.u32
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elif u16 <= 64:
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inputFormat = InputFormat.u64
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else:
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inputFormat = InputFormat.bytearray
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else:
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field.Size = 0
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field.VariableSize = token["size"]
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if "format" in token and token["format"] != None:
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inputFormat = InputFormat[token["format"]]
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field.Format = inputFormat
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if "default" in token and token["default"] != None:
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field.DefaultValue = token["default"]
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ret, _ = ExpressionConverter.Verify(field.Format, field.DefaultValue)
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if not ret:
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return None
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if "readonly" in token and token["readonly"] == "true" or field.IsReserved:
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field.IsReadonly = True
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if "autoincrease" in token and token["autoincrease"] == "true":
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field.IsAutoIncrease = True
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field.IsReadonly = True
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if "increaselength" in token and token["increaselength"] == "true":
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field.IsIncreaseLength = True
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if "optional" in token:
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field.Optional = token["optional"]
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return field
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