[Intel-wired-lan] [PATCH 2/2] i40e: Register a virtbus device to provide RDMA

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Shiraz Saleem
> Sent: Thursday, January 16, 2020 3:06 PM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Saleem, Shiraz <shiraz.saleem at intel.com>
> Subject: [Intel-wired-lan] [PATCH 2/2] i40e: Register a virtbus device to
> provide RDMA
> 
> Register client virtbus device on the virtbus for the RDMA virtbus driver
> (irdma) to bind to. It allows to realize a single RDMA driver capable of working
> with multiple netdev drivers over multi-generation Intel HW supporting
> RDMA.
> There is also no load ordering dependencies between i40e and irdma.
> 
> Summary of changes:
> * Support to add/remove virtbus devices
> * Add 2 new client ops.
> 	* i40e_client_device_register() which is called during RDMA
> 	  probe() per PF. Validate client drv OPs and schedule service
> 	  task to call open()
> 	* i40e_client_device_unregister() called during RDMA remove()
> 	  per PF. Call client close() and release_qvlist.
> * The global register/unregister calls exported for i40iw are retained
>   until i40iw is removed from the kernel.
> 
> Signed-off-by: Mustafa Ismail <mustafa.ismail at intel.com>
> Signed-off-by: Shiraz Saleem <shiraz.saleem at intel.com>
> ---
>  drivers/net/ethernet/intel/Kconfig            |   1 +
>  drivers/net/ethernet/intel/i40e/i40e_client.c | 137
> ++++++++++++++++++++++----
>  include/linux/net/intel/i40e_client.h         |  15 +++
>  3 files changed, 133 insertions(+), 20 deletions(-)

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