Ting Xu ce4b645178 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
2022-09-20 20:44:42 +00:00

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{
"type" : "node",
"name" : "l2tpv2ctl",
"layout" : [
{
"name" : "t",
"size" : "1",
"default" : "1",
"readonly" : "true"
},
{
"name" : "l",
"size" : "1",
"default" : "1",
"readonly" : "true"
},
{
"name" : "reserved",
"size" : "2"
},
{
"name" : "s",
"size" : "1",
"default" : "1",
"readonly" : "true"
},
{
"name" : "reserved",
"size" : "1"
},
{
"name" : "o",
"size" : "1",
"default" : "0",
"readonly" : "true"
},
{
"name" : "p",
"size" : "1",
"default" : "0",
"readonly" : "true"
},
{
"name" : "reserved",
"size" : "4"
},
{
"name" : "version",
"size" : "4",
"default" : "2",
"readonly" : "true"
},
{
"name" : "length",
"size" : "16"
},
{
"name" : "tunnelid",
"size" : "16"
},
{
"name" : "sessionid",
"size" : "16"
},
{
"name" : "ns",
"size" : "16"
},
{
"name" : "nr",
"size" : "16"
}
]
}