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authorTing Xu <ting.xu@intel.com>2022-04-24 06:14:25 +0000
committerDave Wallace <dwallacelf@gmail.com>2022-09-20 20:44:42 +0000
commitce4b6451787389c5b0ebfac413c350ef3a424b8b (patch)
treeaa777368e14fca9b6613f747817331336ca2b11b /extras/packetforge/ProtocolHeaderField.py
parentf5e0a17c9cca09822296a0ed3196fde36c1ca5f8 (diff)
packetforge: add packetforge for generic flow to extras
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
Diffstat (limited to 'extras/packetforge/ProtocolHeaderField.py')
-rw-r--r--extras/packetforge/ProtocolHeaderField.py48
1 files changed, 48 insertions, 0 deletions
diff --git a/extras/packetforge/ProtocolHeaderField.py b/extras/packetforge/ProtocolHeaderField.py
new file mode 100644
index 00000000000..bcb88214931
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+++ b/extras/packetforge/ProtocolHeaderField.py
@@ -0,0 +1,48 @@
+# Copyright (c) 2022 Intel and/or its affiliates.
+# 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.
+
+import ExpressionConverter
+
+
+class ProtocolHeaderField:
+ def __init__(self, Size, Value, Mask, Field):
+ self.Size = Size
+ self.Value = Value
+ self.Mask = Mask
+ self.Field = Field
+
+ def UpdateValue(self, expression, auto):
+ if self.Field.IsReadonly and not auto:
+ return False
+
+ if expression != None:
+ ret, _ = ExpressionConverter.Verify(self.Field.Format, expression)
+ if not ret:
+ return False
+
+ self.Value = expression
+ return True
+
+ def UpdateMask(self, expression):
+ if expression != None:
+ ret, _ = ExpressionConverter.Verify(self.Field.Format, expression)
+ if not ret:
+ return False
+
+ self.Mask = expression
+ return True
+
+ def UpdateSize(self):
+ if self.Size:
+ return
+ self.Size = self.Field.Size