reversed changes reagrding default initialization of component interfaces

experiments/pyexps/netperf_sysconf.py

@@ -24,8 +24,6 @@ host0 = system.I40ELinuxHost(sys)
 pcie0 = system.PCIeHostInterface(host0)
 host0.add_if(pcie0)
 nic0 = system.IntelI40eNIC(sys)
-nic0_pci = system.PCIeDeviceInterface(nic0)
-nic0.add_if(nic0_pci)
 nic0.add_ipv4('10.0.0.1')
 pcichannel0 = system.PCIeChannel(pcie0, nic0._pci_if)
 
@@ -34,8 +32,6 @@ host1 = system.I40ELinuxHost(sys)
 pcie1 = system.PCIeHostInterface(host1)
 host1.add_if(pcie0)
 nic1 = system.IntelI40eNIC(sys)
-nic1_pci = system.PCIeDeviceInterface(nic1)
-nic1.add_if(nic1_pci)
 nic1.add_ipv4('10.0.0.2')
 pcichannel1 = system.PCIeChannel(pcie1, nic1._pci_if)
 
@@ -46,10 +42,6 @@ switch.add_if(netif0)
 netif1 = system.EthInterface(switch)
 switch.add_if(netif1)
 
-nic0_eth = system.EthInterface(nic0)
-nic0.add_if(nic0_eth)
-nic1_eth = system.EthInterface(nic1)
-nic1.add_if(nic1_eth)
 
 # create channels and connect the switch to the host nics
 ethchannel0 = system.EthChannel(switch.eth_ifs[0], nic0._eth_if)

experiments/simbricks/orchestration/system/eth.py

@@ -44,16 +44,14 @@ class EthSimpleNIC(base.Component):
     def __init__(self, s: base.System) -> None:
         super().__init__(s)
         self._ip: str | None = None
-        self._eth_if: EthInterface | None = None
+        self._eth_if: EthInterface = EthInterface(self)
 
     def add_ipv4(self, ip: str) -> None:
         assert self._ip is None
         self._ip = ip
 
     def add_if(self, interface: EthInterface) -> None:
-        utils_base.has_expected_type(obj=interface, expected_type=EthInterface)
-        assert self._eth_if is None
-        self._eth_if = interface
+        raise Exception("EthSimpleNIC already has ethernet interface")
 
 class BaseEthNetComponent(base.Component):
     def __init__(self, s: base.System) -> None:

experiments/simbricks/orchestration/system/pcie.py

@@ -56,12 +56,10 @@ class PCIeChannel(base.Channel):
 class PCIeSimpleDevice(base.Component):
     def __init__(self, s: base.System):
         super().__init__(s)
-        self._pci_if: PCIeDeviceInterface | None = None
+        self._pci_if: PCIeDeviceInterface = PCIeDeviceInterface(self)
 
     def interfaces(self) -> list[base.Interface]:
         return [self._pci_if]
 
     def add_if(self, interface: PCIeDeviceInterface) -> None:
-        utils_base.has_expected_type(obj=interface, expected_type=PCIeDeviceInterface)
-        assert self._pci_if is None
-        self._pci_if = interface
+        raise Exception("PCIeSimpleDevice already has PCI device interface")
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