netdev - RE: [Intel-wired-lan] [PATCH iwl-next v12 02/14] ice: support Rx timestamp on flex descriptor

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Message-ID: <SJ0PR11MB5865153EB6CAE882F805DAD08F512@SJ0PR11MB5865.namprd11.prod.outlook.com>
Date: Mon, 4 Nov 2024 10:51:21 +0000
From: "Romanowski, Rafal" <rafal.romanowski@...el.com>
To: "Polchlopek, Mateusz" <mateusz.polchlopek@...el.com>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "Su, Simei"
	<simei.su@...el.com>, "Drewek, Wojciech" <wojciech.drewek@...el.com>, "Simon
 Horman" <horms@...nel.org>, "Polchlopek, Mateusz"
	<mateusz.polchlopek@...el.com>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v12 02/14] ice: support Rx
 timestamp on flex descriptor

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Mateusz Polchlopek
> Sent: Tuesday, October 22, 2024 1:41 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: netdev@...r.kernel.org; Su, Simei <simei.su@...el.com>; Drewek, Wojciech
> <wojciech.drewek@...el.com>; Simon Horman <horms@...nel.org>; Polchlopek,
> Mateusz <mateusz.polchlopek@...el.com>
> Subject: [Intel-wired-lan] [PATCH iwl-next v12 02/14] ice: support Rx timestamp
> on flex descriptor
> 
> From: Simei Su <simei.su@...el.com>
> 
> To support Rx timestamp offload, VIRTCHNL_OP_1588_PTP_CAPS is sent by the
> VF to request PTP capability and responded by the PF what capability is enabled
> for that VF.
> 
> Hardware captures timestamps which contain only 32 bits of nominal
> nanoseconds, as opposed to the 64bit timestamps that the stack expects.
> To convert 32b to 64b, we need a current PHC time.
> VIRTCHNL_OP_1588_PTP_GET_TIME is sent by the VF and responded by the PF
> with the current PHC time.
> 
> Signed-off-by: Simei Su <simei.su@...el.com>
> Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
> Reviewed-by: Simon Horman <horms@...nel.org>
> Co-developed-by: Mateusz Polchlopek <mateusz.polchlopek@...el.com>
> Signed-off-by: Mateusz Polchlopek <mateusz.polchlopek@...el.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_base.c     |  3 -
>  drivers/net/ethernet/intel/ice/ice_lib.c      |  5 +-
>  drivers/net/ethernet/intel/ice/ice_ptp.c      |  4 +-
>  drivers/net/ethernet/intel/ice/ice_ptp.h      |  8 ++
>  drivers/net/ethernet/intel/ice/ice_vf_lib.h   |  3 +
>  drivers/net/ethernet/intel/ice/ice_virtchnl.c | 73 ++++++++++++++++++-
> drivers/net/ethernet/intel/ice/ice_virtchnl.h |  6 ++
>  .../intel/ice/ice_virtchnl_allowlist.c        |  7 ++
>  include/linux/avf/virtchnl.h                  | 15 +++-
>  9 files changed, 113 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_base.c
> b/drivers/net/ethernet/intel/ice/ice_base.c
> index 3a8e156d7d86..aafcd3d4e599 100644
> --- a/drivers/net/ethernet/intel/ice/ice_base.c
> +++ b/drivers/net/ethernet/intel/ice/ice_base.c

Tested-by: Rafal Romanowski <rafal.romanowski@...el.com>