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https://github.com/openvswitch/ovs
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bb0dd1135b
The python/build folder contents are completely unrelated to the ovs python bindings. These files are only used during the build for various subsystems (docs, man pages, code generation, etc.). Having that folder in that location prevents from running: cd python && python3 -m build Which is a way to generate PEP517 compatible source archives and binary wheel packages. Rename that folder to ovs_build_helpers which is more explicit. Update all imports accordingly. Link: https://peps.python.org/pep-0517/ Link: https://pypi.org/project/build/ Signed-off-by: Robin Jarry <rjarry@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
83 lines
2.0 KiB
Python
Executable File
83 lines
2.0 KiB
Python
Executable File
#!/bin/env python
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import argparse
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from ovs_build_helpers.extract_ofp_fields import extract_ofp_fields
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def main():
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parser = argparse.ArgumentParser(
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description="Tool to generate python ofproto field decoders from"
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"meta-flow information"
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)
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parser.add_argument(
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"metaflow",
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metavar="FILE",
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type=str,
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help="Read meta-flow info from file",
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)
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args = parser.parse_args()
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fields = extract_ofp_fields(args.metaflow)
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field_decoders = {}
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aliases = {}
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for field in fields:
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decoder = get_decoder(field)
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field_decoders[field.get("name")] = decoder
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if field.get("extra_name"):
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field_decoders[field.get("extra_name")] = decoder
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for nxm in field.get("OXM", []):
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aliases[nxm[1]] = field.get("name")
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code = """
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# This file is auto-generated. Do not edit!
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from ovs.flow import decoders
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field_decoders = {{
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{decoders}
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}}
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field_aliases = {{
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{aliases}
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}}""".format(
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decoders="\n".join(
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[
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" '{name}': {decoder},".format(name=name, decoder=decoder)
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for name, decoder in field_decoders.items()
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]
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),
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aliases="\n".join(
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[
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" '{alias}': '{name}',".format(name=name, alias=alias)
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for alias, name in aliases.items()
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]
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)
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)
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print(code)
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def get_decoder(field):
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formatting = field.get("formatting")
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if formatting in ["decimal", "hexadecimal"]:
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if field.get("mask") == "MFM_NONE":
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return "decoders.decode_int"
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else:
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if field.get("n_bits") in [8, 16, 32, 64, 128, 992]:
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return "decoders.Mask{}".format(field.get("n_bits"))
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return "decoders.decode_mask({})".format(field.get("n_bits"))
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elif formatting in ["IPv4", "IPv6"]:
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return "decoders.IPMask"
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elif formatting == "Ethernet":
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return "decoders.EthMask"
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else:
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return "decoders.decode_default"
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if __name__ == "__main__":
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main()
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