[Intel-wired-lan] [net-next, v7 1/5] ice: add the virtchnl handler for AdminQ command

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Haiyue Wang
> Sent: Tuesday, June 30, 2020 6:26 PM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [net-next, v7 1/5] ice: add the virtchnl handler for
> AdminQ command
> 
> The DCF (Device Config Function) is a named trust VF (alway with ID 0, single
> entity per PF port) that can act as a sole controlling entity to exercise advance
> functionality such as adding switch rules for the rest of VFs.
> 
> To achieve this approach, this VF is permitted to send some basic AdminQ
> commands to the PF through virtual channel (mailbox), then the PF driver
> sends these commands to the firmware, and returns the response to the VF
> again through virtual channel.
> 
> The AdminQ command from DCF is split into two parts: one is the AdminQ
> descriptor, the other is the buffer (the descriptor has BUF flag set).
> These two parts should be sent in order, so that the PF can handle them
> correctly.
> 
> Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>
> ---
>  drivers/net/ethernet/intel/ice/Makefile       |   2 +-
>  drivers/net/ethernet/intel/ice/ice.h          |   2 +
>  .../net/ethernet/intel/ice/ice_adminq_cmd.h   |   6 +
>  drivers/net/ethernet/intel/ice/ice_dcf.c      |  49 +++++++
>  drivers/net/ethernet/intel/ice/ice_dcf.h      |  20 +++
>  .../net/ethernet/intel/ice/ice_virtchnl_pf.c  | 130 ++++++++++++++++++
>  .../net/ethernet/intel/ice/ice_virtchnl_pf.h  |   1 +
>  include/linux/avf/virtchnl.h                  |  10 ++
>  8 files changed, 219 insertions(+), 1 deletion(-)  create mode 100644
> drivers/net/ethernet/intel/ice/ice_dcf.c
>  create mode 100644 drivers/net/ethernet/intel/ice/ice_dcf.h

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>