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PCIDevicez.Helper class for interaction with a PCI devicepci_addrcCs ||_dS)znInitialise a new PCI device handler :param pci_addr: PCI address of device :type: str Nr)selfrr'/usr/share/netplan/netplan/cli/sriov.py__init__'s zPCIDevice.__init__returncCsdS)zusysfs path (can be overridden for testing) :return: full path to /sys filesystem :rtype: str z/sysrrrrr sys.sz PCIDevice.syscCstj|jd|jS)zq/sys path for PCI device :return: full path to PCI device in /sys filesystem :rtype: str zbus/pci/devices)ospathjoinr rr rrr r6szPCIDevice.pathsubpathcCstj|j|S)z/sys subpath helper for PCI device :param subpath: subpath to construct path for :type: str :return: self.path + subpath :rtype: str )rrr)rrrrr r>szPCIDevice.subpathcCs2d}tj|drtjt|d}|S)zjKernel driver for PCI device :return: kernel driver in use for device :rtype: str driver)rrexistsrbasenamereadlink)rrrrr rGszPCIDevice.drivercCtj|dS)zDetermine if device is bound to a kernel driver :return: whether device is bound to a kernel driver :rtype: bool rrrrrr rrr boundRzPCIDevice.boundcCr)zwDetermine if device is a SR-IOV Physical Function :return: whether device is a PF :rtype: bool sriov_numvfsrr rrr is_pfZrzPCIDevice.is_pfcCr)zvDetermine if device is a SR-IOV Virtual Function :return: whether device is a VF :rtype: bool Zphysfnrr rrr is_vfbrzPCIDevice.is_vfc CsRg}d} z|tjt|d|Wn ty#Y|Sw|d7}q)zList Virtual Function addresses associated with a Physical Function :return: List of PCI addresses of Virtual Functions :rtype: list[str] rTzvirtfn{})appendrrrrrformatFileNotFoundError)rvf_addrsirrr r"js zPCIDevice.vf_addrscCsdd|jDS)zList Virtual Function associated with a Physical Function :return: List of PCI devices of Virtual Functions :rtype: list[PCIDevice] cSsg|]}t|qSr)r).0addrrrr sz!PCIDevice.vfs..)r"r rrr vfs~sz PCIDevice.vfsobj_namepropvaluec Cs$tdd|dd|j||gdS)zSet devlink options for the PCI device :param obj_name: devlink object to set options on :type: str :param prop: property to set :type: str :param value: value to set for property :type: str z /sbin/devlinkdevsetzpci/{}N) subprocess check_callr r)rr(r)r*rrr devlink_sets  zPCIDevice.devlink_setcCs|jS)zbString represenation of object :return: PCI address of string :rtype: str rr rrr __str__szPCIDevice.__str__N)__name__ __module__ __qualname____doc__strr propertyr rrrboolrrrlistr"r'r/r0rrrr r$s,  rr'c Cs^g}|D](}|js,td|d}||j||Wdn1s'wYq|S)zBind unbound VFs to driver.z/sys/bus/pci/drivers/{}/bindwtNropenr writerr)r'rZ bound_vfsvffrrr bind_vfs  r?r c Cs^g}|D](}|jr,td|d}||j||Wdn1s'wYq|S)zUnbind bound VFs from driver.z/sys/bus/pci/drivers/{}/unbindr9Nr:)r'rZ unbound_vfsr=r>rrr unbind_vfsr@rAc Cs||vrd|j|}|d}|r\|d}|r ||vr |||<nD|d}|d}|d} |D])} |r;t| |rK|rCt| |rK| rLt| | sLq1||vrVtd|| ||<q1n||vrd|||<||dS)Nmatchzset-namename macaddressrz3matched more than one interface for a PF device: %s) ethernetsgetutilsis_interface_matching_name is_interface_matching_macaddress!is_interface_matching_driver_namer) interfacesconfig_managerpf_linkpfsZpf_devZpf_matchset_nameby_nameZby_macZ by_driver interfacerrr _get_target_interfaces8              rRc Cstjd|d}z?t|0}d}|D]}|}|dr3|ddd}|WdWSqWdWdS1s@wYWdSty]}z t d|t |fd}~ww) z5 Read PCI slot name for given interface name /sys/class/netz device/ueventNzPCI_SLOT_NAME==rz'failed parsing PCI slot name for %s: %s) rrrr; readlinesstrip startswithsplitIOError RuntimeErrorr5)ZnetdevZ uevent_pathr>Z pci_slot_namelineerrr _get_pci_slot_names"   &r^c Csi}|jD]O\}}|sq|dkrq|d}|r(t||||} | r'||| <q|d} | rV| |jvrVt||| || |vrJ||| d7<ntd| qd||<q|D]\} } | |vrs|| | krstd|| | f| || <q[dS)z Go through the list of netplan ethernet devices and identify which are PFs and VFs, matching the former with actual networking interfaces. Count how many VFs each PF will need. rendererzvirtual-function-countlinkrz9could not match physical interface for the defined PF: %sNz;more VFs allocated than the explicit size declared: %s > %s)rEitemsrFrRloggingwarningr) rKrL vf_countsr'rNZexplicit_countsZethernetsettingsZ explicit_numpfrMcountrrr get_vf_count_and_functionss8   rhc Cs"|dkr td||ftjd|d}tj|d}tj|d}zt|}t|}Wdn1s:wYWn"tyV}z t d|t |fd}~wt ybt d |w||krptd |||fz!t|d }| t |WdWd S1swYWd Sty}zrd }|j d krtd|z8t|d  }| dWdn1swYt|d }| t |Wdn1swYWnty} z| }WYd} ~ nd} ~ wwd}|rt d||t |fWYd}~d Sd}~ww)zB Allocate the required number of VFs for the selected PF. zDcannot allocate more VFs for PF %s than the SR-IOV maximum: %s > 256rSdevicerZsriov_totalvfsNz(failed parsing sriov_totalvfs for %s: %sz#invalid sriov_totalvfs value for %szKcannot allocate more VFs for PF %s than supported: %s > %s (sriov_totalvfs)wTzLdevice or resource busy while setting sriov_numvfs for %s, trying workaround0Fz,failed setting sriov_numvfs to %s for %s: %s)rrrrr;intreadrWrZr[r5 ValueErrorr<errnorbrc) rfvf_countdevdirZ numvfs_pathZ totalvfs_pathr>Zvf_maxr]ZbailZe_innerrrr set_numvfs_for_pf"sh            rtc Cstjd|d}zHttj|d}|dd}Wdn1s'wYttj|d}|dd}Wdn1sJwYWntyf}z td|t|fd}~wwd||g}d}||vrw dSdS) z Perform any hardware-specific quirks for the given SR-IOV device to make sure all the VF-count changes are applied. rSrjZvendorrUNz2could not determine vendor and device ID of %s: %s:r) rrrr;rorWrZr[r5)rfrsr>Z device_idZ vendor_idr]Z combined_idZ quirk_devicesrrr perform_hardware_specific_quirksQs$ rv/c Csd}tj|d|d}tjt|}tj|d|d}t|D]"} d| vrDtj|| } tjt| } | |krD| dd}nq"|sOtd||fztjddd d |d |d t |g tj tj d WdStj yutd|w)z@ Apply the hardware VLAN filtering for the selected VF. Nz sys/class/netrjZvirtfnzAcould not determine the VF index for %s while configuring vlan %sipr`r,r+r=vlan)stdoutstderrzJfailed setting SR-IOV VLAN filter for vlan %s (ip link set command failed)) rrrrrlistdirr[r-r.r5DEVNULLCalledProcessError) rfr=Z vlan_namevlan_idprefixZvf_indexZ vf_devdirZ vf_dev_idZ pf_devdirr>Zdev_pathZdev_idrrr apply_vlan_filter_for_vfns<    rc Cst}||t}|||t}tt }i}i}t |||||g}|rB| D]\} } t | | ss&     '1/ '