def __build_device_config_tofino(self):
"""
Builds the device config for Tofino
"""
prog_name = self.sw_info['type']
bin_path = self.sw_info['bin_path']
cxt_json_path = self.sw_info['cxt_json_path']
logger.info(
'Building device configuration for program - [%s], bin_path - [%s]'
', and cxt_json_path - [%s]', prog_name, bin_path, cxt_json_path)
prog_name = prog_name.encode('utf-8')
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(bin_path, 'rb') as bin_f:
with open(cxt_json_path, 'r') as cxt_json_f:
device_config.device_data = ""
device_config.device_data += struct.pack("<i", len(prog_name))
device_config.device_data += prog_name
tofino_bin = bin_f.read()
device_config.device_data += struct.pack("<i", len(tofino_bin))
device_config.device_data += tofino_bin
cxt_json = cxt_json_f.read()
device_config.device_data += struct.pack("<i", len(cxt_json))
device_config.device_data += cxt_json
return device_config
def buildDeviceConfig(bmv2_json_file_path=None):
"Builds the device config for BMv2"
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(bmv2_json_file_path) as f:
device_config.device_data = f.read().encode('utf-8')
return device_config
def main():
parser = argparse.ArgumentParser(
description="Invokes the p4c-bm2-ss compiler and generates a "
"binary file to be used as the 'p4_device_config' field in the "
"ForwardingPipelineConfig p4runtime.proto message.")
parser.add_argument('src', type=str, help='Path to P4 source')
parser.add_argument('--out-bin',
type=str,
required=True,
help='Path for output binary file')
parser.add_argument('--out-p4info',
type=str,
required=True,
help='Path for output p4info text message')
parser.add_argument('--compiler',
type=str,
default='p4c-bm2-ss',
help='bmv2 compiler to use. Default is p4c-bm2-ss.')
args = parser.parse_args()
if not check_compiler_exec(args.compiler):
print "Cannot use provided compiler or compiler binary not in PATH"
sys.exit(1)
if not os.path.exists(args.src):
print "P4 source", args.src, "does not exist"
sys.exit(1)
tmp_dir = tempfile.mkdtemp()
out_json = os.path.join(tmp_dir, 'dp.json')
out_p4info = os.path.join(tmp_dir, 'p4info.proto.txt')
cmd = [
args.compiler, '--p4-16', args.src, '-o', out_json,
'--p4runtime-format', 'text', '--p4runtime-file', out_p4info
]
print ' '.join(cmd)
try:
subprocess.check_output(cmd, stderr=subprocess.STDOUT)
except subprocess.CalledProcessError:
print "Error when compiling P4 program"
print out
shutil.rmtree(tmp_dir)
sys.exit(1)
except OSError:
print "Fatal error when compiling P4 program"
shutil.rmtree(tmp_dir)
sys.exit(2)
try:
shutil.copyfile(out_p4info, args.out_p4info)
except:
print "Error when writing to", args.out_p4info
sys.exit(1)
with open(args.out_bin, 'wf') as f_out:
with open(out_json, 'r') as f_json:
device_config = p4config_pb2.P4DeviceConfig()
device_config.device_data = f_json.read()
f_out.write(device_config.SerializeToString())
shutil.rmtree(tmp_dir)
def buildDeviceConfig(bmv2_json_file_path=None):
"Builds the device config for BMv2"
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
# set device_config.extra to default instance
with open(bmv2_json_file_path) as f:
device_config.device_data = f.read()
return device_config
def build_device_config(self, bmv2_json_file_path=None):
logger.info('Building device config for BMV2 with file - [%s]',
bmv2_json_file_path)
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(bmv2_json_file_path) as f:
device_config.device_data = f.read()
return device_config
def build_bmv2_config(self):
"""
Builds the device config for BMv2
"""
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(self.config_path) as f:
device_config.device_data = f.read()
return device_config
def __build_device_config_bmv2(self):
runtime_json = self.sw_info['runtime_json']
logger.info('Building device [%s] config with file - [%s]',
self.grpc_addr, runtime_json)
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(runtime_json) as f:
file_data = f.read()
device_config.device_data = bytes(file_data, 'utf-8')
return device_config
def build_tofino_config(self, prog_name, bin_path, cxt_json_path):
device_config = p4config_pb2.P4DeviceConfig()
with open(bin_path, 'rb') as bin_f:
with open(cxt_json_path, 'r') as cxt_json_f:
device_config.device_data = ""
device_config.device_data += struct.pack("<i", len(prog_name))
device_config.device_data += prog_name
tofino_bin = bin_f.read()
device_config.device_data += struct.pack("<i", len(tofino_bin))
device_config.device_data += tofino_bin
cxt_json = cxt_json_f.read()
device_config.device_data += struct.pack("<i", len(cxt_json))
device_config.device_data += cxt_json
return device_config
def set_forwarding_pipeline(self):
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(self.bmv2_json) as f:
device_config.device_data = f.read()
request = p4runtime_pb2.SetForwardingPipelineConfigRequest()
request.election_id.CopyFrom(self.election_id)
request.device_id = self.device_id
config = request.config
config.p4info.CopyFrom(self.p4info)
config.p4_device_config = device_config.SerializeToString()
request.action = p4runtime_pb2.SetForwardingPipelineConfigRequest.VERIFY_AND_COMMIT
self.client_stub.SetForwardingPipelineConfig(request)
return
def buildDeviceConfig(bmv2_json_file_path=None,
port=None,
notifications=None,
cpu_iface=None):
"Builds the device config for BMv2"
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
# (*kv)["port"] = "9090";
# (*kv)["notifications"] = "ipc:///tmp/bmv2-0-notifications.ipc";
# (*kv)["cpu_iface"] = "veth251";
#device_config.extras.kv["port"] = port
#device_config.extras.kv["notifications"] = notifications
#device_config.extras.kv["cpu_iface"] = cpu_iface
#print(device_config)
with open(bmv2_json_file_path) as f:
device_config.device_data = f.read()
return device_config
def buildDeviceConfig(prog_name="sample", tofino_bin=None, cxt_json=None):
"Builds the device config for Tofino based switch"
device_config = p4config_pb2.P4DeviceConfig()
device_config.reassign = True
with open(tofino_bin) as tofino_bin_f:
with open(cxt_json) as cxt_json_f:
device_config.device_data = ""
device_config.device_data += struct.pack("<i", len(prog_name))
device_config.device_data += prog_name
tofino_bin = tofino_bin_f.read()
device_config.device_data += struct.pack("<i", len(tofino_bin))
device_config.device_data += tofino_bin
cxt_json = cxt_json_f.read()
device_config.device_data += struct.pack("<i", len(cxt_json))
device_config.device_data += cxt_json
return device_config
def setUp(self, proto_bin_path):
BaseTest.setUp(self)
self.target = testutils.test_param_get('target')
if not self.target:
self.target = "bmv2"
elif self.target not in {"bmv2"}:
print "Unsupported target", self.target
sys.exit(1)
self.device_id = 0
# Setting up PTF dataplane
self.dataplane = ptf.dataplane_instance
self.dataplane.flush()
self.device_id = 0
self.channel = grpc.insecure_channel('localhost:50051')
self.stub = p4runtime_pb2.P4RuntimeStub(self.channel)
ConfigRequest = p4runtime_pb2.SetForwardingPipelineConfigRequest
req = ConfigRequest()
print "Connecting to device"
req.action = ConfigRequest().VERIFY_AND_COMMIT
config = req.configs.add()
config.device_id = self.device_id
print "Importing p4info proto from", proto_bin_path
with open(proto_bin_path, "rb") as fin:
config.p4info.ParseFromString(fin.read())
# we save p4info for name -> id lookups
self.p4info = config.p4info
if self.target == "bmv2":
device_config = p4config_pb2.P4DeviceConfig()
extras = device_config.extras
extras.kv["port"] = "9090"
extras.kv["notifications"] = "ipc:///tmp/bmv2-0-notifications.ipc"
config.p4_device_config = device_config.SerializeToString()
rep = self.stub.SetForwardingPipelineConfig(req)
def buildDeviceConfig(self, **kwargs):
return p4config_pb2.P4DeviceConfig()
def bmv2_json_to_device_config(bmv2_json_fname, bmv2_bin_fname):
with open(bmv2_bin_fname, 'wf') as f_out:
with open(bmv2_json_fname, 'r') as f_json:
device_config = p4config_pb2.P4DeviceConfig()
device_config.device_data = f_json.read()
f_out.write(device_config.SerializeToString())
def buildDeviceConfig(self, **kwargs):
Log.debug("before build device config")
return p4config_pb2.P4DeviceConfig()
