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Expose port function commands to enable / disable RoCE, this is used to
control the port RoCE device capabilities.
When RoCE is disabled for a function of the port, function cannot create
any RoCE specific resources (e.g GID table).
It also saves system memory utilization. For example disabling RoCE enable a
VF/SF saves 1 Mbytes of system memory per function.
Example of a PCI VF port which supports function configuration:
Set RoCE of the VF's port function.
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce enable
$ devlink port function set pci/0000:06:00.0/2 roce disable
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce disable
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
da65e9ff3b