netdev - RE: [Intel-wired-lan] [PATCH iwl-next v4 4/6] ice: use u64_stats API to access pkts/bytes in dim sample

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Message-ID: <IA1PR11MB6241560C2DE20ABC2E2981628BA8A@IA1PR11MB6241.namprd11.prod.outlook.com>
Date: Thu, 18 Dec 2025 10:51:05 +0000
From: "Rinitha, SX" <sx.rinitha@...el.com>
To: "Keller, Jacob E" <jacob.e.keller@...el.com>, "Loktionov, Aleksandr"
	<aleksandr.loktionov@...el.com>, "Lobakin, Aleksander"
	<aleksander.lobakin@...el.com>, "Nguyen, Anthony L"
	<anthony.l.nguyen@...el.com>, "Kitszel, Przemyslaw"
	<przemyslaw.kitszel@...el.com>
CC: Simon Horman <horms@...nel.org>, "intel-wired-lan@...ts.osuosl.org"
	<intel-wired-lan@...ts.osuosl.org>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "Keller, Jacob E" <jacob.e.keller@...el.com>,
	"Loktionov, Aleksandr" <aleksandr.loktionov@...el.com>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v4 4/6] ice: use u64_stats API
 to access pkts/bytes in dim sample

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of Jacob Keller
> Sent: 21 November 2025 01:51
> To: Loktionov, Aleksandr <aleksandr.loktionov@...el.com>; Lobakin, Aleksander <aleksander.lobakin@...el.com>; Nguyen, Anthony L <anthony.l.nguyen@...el.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@...el.com>
> Cc: Simon Horman <horms@...nel.org>; intel-wired-lan@...ts.osuosl.org; netdev@...r.kernel.org; Keller, Jacob E <jacob.e.keller@...el.com>; Loktionov, Aleksandr <aleksandr.loktionov@...el.com>
> Subject: [Intel-wired-lan] [PATCH iwl-next v4 4/6] ice: use u64_stats API to access pkts/bytes in dim sample
>
> The __ice_update_sample and __ice_get_ethtool_stats functions directly accesses the pkts and bytes counters from the ring stats. A following change is going to update the fields to be u64_stats_t type, and will need to be accessed appropriately. This will ensure that the accesses do not cause load/store tearing.
>
> Add helper functions similar to the ones used for updating the stats values, and use them. This ensures use of the syncp pointer on 32-bit architectures. Once the fields are updated to u64_stats_t, it will then properly avoid tears on all architectures.
>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
> Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
> ---
> drivers/net/ethernet/intel/ice/ice_lib.h     |  6 +++++
> drivers/net/ethernet/intel/ice/ice_ethtool.c | 26 +++++++++++++-------
> drivers/net/ethernet/intel/ice/ice_lib.c     | 36 ++++++++++++++++++++++++++++
> drivers/net/ethernet/intel/ice/ice_txrx.c    | 29 +++++++++++-----------
> 4 files changed, 75 insertions(+), 22 deletions(-)
>

Tested-by: Rinitha S <sx.rinitha@...el.com> (A Contingent worker at Intel)