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Connect controller to deployed BMV2 and retrieve existing P4Info for Helper use + Generic decoder for convert.py #508

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Connect controller to deployed BMV2 and retrieve existing P4Info for Helper use + Generic decoder for convert.py #508

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fc78227
decode functionality for convert.py
davidjosearaujo Apr 11, 2023
0aa1990
Get configured Pipeline to use on already deployed BMV2
davidjosearaujo Apr 11, 2023
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10 changes: 10 additions & 0 deletions utils/p4runtime_lib/convert.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,16 @@ def encode(x, bitwidth):
assert(len(encoded_bytes) == byte_len)
return encoded_bytes


def decode(enc_val):
decode_functions = [decodeIPv4, decodeMac, decodeNum]
for func in decode_functions:
try:
return func(enc_val)
except:
pass
raise Exception("Encoded value format not compatible")

if __name__ == '__main__':
# TODO These tests should be moved out of main eventually
mac = "aa:bb:cc:dd:ee:ff"
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11 changes: 11 additions & 0 deletions utils/p4runtime_lib/switch.py
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Expand Up @@ -84,6 +84,17 @@ def SetForwardingPipelineConfig(self, p4info, dry_run=False, **kwargs):
else:
self.client_stub.SetForwardingPipelineConfig(request)

def GetForwardingPipelineConfig(self):
try:
request = p4runtime_pb2.GetForwardingPipelineConfigRequest()
request.device_id = self.device_id
response = self.client_stub.GetForwardingPipelineConfig(request)
return response.config.p4info
except grpc._channel._InactiveRpcError as e:
if(e.code() == grpc.StatusCode.FAILED_PRECONDITION):
print(e.debug_error_string())
return None

def WriteTableEntry(self, table_entry, dry_run=False):
request = p4runtime_pb2.WriteRequest()
request.device_id = self.device_id
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