+ self.execute_and_wait('sysctl -w net.ipv4.conf.' + nic['device'] +
+ '.rp_filter=0')
+
+ def _bind_dpdk_driver(self, driver, pci_slots):
+ """
+ Bind the virtual nics to the driver specific in the conf file
+ :return: None
+ """
+ if driver == 'uio_pci_generic':
+ if S.getValue('VNF') == 'QemuPciPassthrough':
+ # unsupported config, bind to igb_uio instead and exit the
+ # outer function after completion.
+ self._logger.error('SR-IOV does not support uio_pci_generic. '
+ 'Igb_uio will be used instead.')
+ self._bind_dpdk_driver('igb_uio_from_src', pci_slots)
+ return
+ self.execute_and_wait('modprobe uio_pci_generic')
+ self.execute_and_wait('./*tools/dpdk*bind.py -b uio_pci_generic '+
+ pci_slots)
+ elif driver == 'vfio_no_iommu':
+ self.execute_and_wait('modprobe -r vfio')
+ self.execute_and_wait('modprobe -r vfio_iommu_type1')
+ self.execute_and_wait('modprobe vfio enable_unsafe_noiommu_mode=Y')
+ self.execute_and_wait('modprobe vfio-pci')
+ self.execute_and_wait('./*tools/dpdk*bind.py -b vfio-pci ' +
+ pci_slots)
+ elif driver == 'igb_uio_from_src':
+ # build and insert igb_uio and rebind interfaces to it
+ self.execute_and_wait('make RTE_OUTPUT=$RTE_SDK/$RTE_TARGET -C '
+ '$RTE_SDK/lib/librte_eal/linuxapp/igb_uio')
+ self.execute_and_wait('modprobe uio')
+ self.execute_and_wait('insmod %s/kmod/igb_uio.ko' %
+ S.getValue('RTE_TARGET'))
+ self.execute_and_wait('./*tools/dpdk*bind.py -b igb_uio ' + pci_slots)
+ else:
+ self._logger.error(
+ 'Unknown driver for binding specified, defaulting to igb_uio')
+ self._bind_dpdk_driver('igb_uio_from_src', pci_slots)