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
93 lines
2.5 KiB
Python
93 lines
2.5 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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from EdgeAction import *
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import json
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class Edge:
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def __init__(self):
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self.JSON = None
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self.Start = None
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self.End = None
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self.actionList = []
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def Create(jsonfile):
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f = open(jsonfile, "r", encoding="utf-8")
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token = json.load(f)
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if token == None:
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return None
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if token["type"] != "edge":
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return None
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edgeList = []
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startNodes = token["start"]
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endNodes = token["end"]
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if startNodes == None or endNodes == None:
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return None
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startTokens = startNodes.split(",")
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endTokens = endNodes.split(",")
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for start in startTokens:
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for end in endTokens:
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edge = Edge()
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edge.Start = start
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edge.End = end
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if "actions" in token:
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for at in token["actions"]:
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action = EdgeAction.Create(at)
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if not action:
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return None
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edge.actionList.append(action)
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edge.JSON = jsonfile
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edgeList.append(edge)
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return edgeList
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def Apply(self, first, second):
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exp = []
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for i in range(len(self.actionList)):
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act = self.actionList[i]
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if act.FromStartObject == True:
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exp.append(first.GetValue(act.FromExpression))
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elif act.FromStartObject == False:
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exp.append(second.GetValue(act.FromExpression))
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else:
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exp.append(act.FromExpression)
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for i in range(len(exp)):
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act = self.actionList[i]
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if act.ToStartObject:
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first.SetFieldAuto(act.ToExpression, exp[i])
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else:
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second.SetFieldAuto(act.ToExpression, exp[i])
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def Actions(self):
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return self.actionList
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def Name(self):
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return self.Start + "_" + self.End
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