Currently ip link set dev <pfndev> vf <vf_num> <param> <value> has few below limitations.
1. Command is limited to set VF parameters only. It cannot set the default MAC address for the PCI PF. 2. It can be set only on system where PCI SR-IOV is supported. In smartnic based system, eswitch of a NIC resides on a different embedded cpu which has the VF and PF representors for the SR-IOV support on a host system in which this smartnic is plugged-in. 3. It cannot setup the function attributes of sub-function described in detail in comprehensive RFC [1] and [2]. This series covers the first small part to let user query and set MAC address (hardware address) of a PCI PF/VF which is represented by devlink port. Patch summary: Patch-1 Sync kernel header Patch-2 Move devlink port code at start to reuse Patch-3 Extends port dump command to query additional port function attribute(s) Patch-4 Enables user to set port function hardware address [1] https://lore.kernel.org/netdev/20200519092258.GF4655@nanopsycho/ [2] https://marc.info/?l=linux-netdev&m=158555928517777&w=2 Parav Pandit (4): Update kernel headers devlink: Move devlink port code at start to reuse devlink: Support querying hardware address of port function devlink: Support setting port function hardware address devlink/devlink.c | 378 ++++++++++++++++++++++++----------- include/uapi/linux/devlink.h | 12 ++ 2 files changed, 269 insertions(+), 121 deletions(-) -- 2.25.4
