netdev - RE: [Intel-wired-lan] [PATCH iwl-next v1 13/15] ice: add VF representors one by one

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Date: Thu, 9 Nov 2023 10:31:06 +0000
From: "Buvaneswaran, Sujai" <sujai.buvaneswaran@...el.com>
To: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC: "Drewek, Wojciech" <wojciech.drewek@...el.com>, "Szycik, Marcin"
	<marcin.szycik@...el.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>, "Kitszel, Przemyslaw"
	<przemyslaw.kitszel@...el.com>, "Keller, Jacob E" <jacob.e.keller@...el.com>,
	"Raczynski, Piotr" <piotr.raczynski@...el.com>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v1 13/15] ice: add VF
 representors one by one

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Michal Swiatkowski
> Sent: Tuesday, October 24, 2023 4:39 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: Drewek, Wojciech <wojciech.drewek@...el.com>; Szycik, Marcin
> <marcin.szycik@...el.com>; netdev@...r.kernel.org; Brandeburg, Jesse
> <jesse.brandeburg@...el.com>; Kitszel, Przemyslaw
> <przemyslaw.kitszel@...el.com>; Keller, Jacob E <jacob.e.keller@...el.com>;
> Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>; Raczynski, Piotr
> <piotr.raczynski@...el.com>
> Subject: [Intel-wired-lan] [PATCH iwl-next v1 13/15] ice: add VF representors
> one by one
> 
> Implement adding representors one by one. Always set switchdev
> environment when first representor is being added and clear environment
> when last one is being removed.
> 
> Basic switchdev configuration remains the same. Code related to creating
> and configuring representor was changed.
> 
> Instead of setting whole representors in one function handle only one
> representor in setup function. The same with removing representors.
> 
> Stop representors when new one is being added or removed. Stop means,
> disabling napi, stopping traffic and removing slow path rule. It is needed
> because ::q_id will change after remapping, so each representor will need
> new rule.
> 
> When representor are stopped rebuild control plane VSI with one more or
> one less queue. One more if new representor is being added, one less if
> representor is being removed.
> 
> Bridge port is removed during unregister_netdev() call on PR, so there is no
> need to call it from driver side.
> 
> After that do remap new queues to correct vector. At the end start all
> representors (napi enable, start queues, add slow path rule).
> 
> Reviewed-by: Piotr Raczynski <piotr.raczynski@...el.com>
> Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_eswitch.c | 351 +++++++++++--------
> drivers/net/ethernet/intel/ice/ice_eswitch.h |  13 +-
>  drivers/net/ethernet/intel/ice/ice_repr.c    |  85 +----
>  drivers/net/ethernet/intel/ice/ice_repr.h    |   4 +-
>  drivers/net/ethernet/intel/ice/ice_sriov.c   |  17 +-
>  5 files changed, 228 insertions(+), 242 deletions(-)
> 
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@...el.com>