linux-kernel - Re: [Intel-wired-lan] [PATCH net v2 1/6] igc: Rename qbv_enable to taprio_offload

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Message-ID: <ec3f0f2d-c8d4-3df7-7ff4-5c841a050be3@linux.intel.com>
Date:   Sun, 2 Jul 2023 16:42:46 +0300
From:   "naamax.meir" <naamax.meir@...ux.intel.com>
To:     Florian Kauer <florian.kauer@...utronix.de>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Tan Tee Min <tee.min.tan@...ux.intel.com>,
        Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>,
        Aravindhan Gunasekaran <aravindhan.gunasekaran@...el.com>,
        Malli C <mallikarjuna.chilakala@...el.com>
Cc:     netdev@...r.kernel.org, kurt@...utronix.de,
        intel-wired-lan@...ts.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [Intel-wired-lan] [PATCH net v2 1/6] igc: Rename qbv_enable to
 taprio_offload_enable

On 6/19/2023 13:08, Florian Kauer wrote:
> In the current implementation the flags adapter->qbv_enable
> and IGC_FLAG_TSN_QBV_ENABLED have a similar name, but do not
> have the same meaning. The first one is used only to indicate
> taprio offload (i.e. when igc_save_qbv_schedule was called),
> while the second one corresponds to the Qbv mode of the hardware.
> However, the second one is also used to support the TX launchtime
> feature, i.e. ETF qdisc offload. This leads to situations where
> adapter->qbv_enable is false, but the flag IGC_FLAG_TSN_QBV_ENABLED
> is set. This is prone to confusion.
> 
> The rename should reduce this confusion. Since it is a pure
> rename, it has no impact on functionality.
> 
> Fixes: e17090eb2494 ("igc: allow BaseTime 0 enrollment for Qbv")
> Signed-off-by: Florian Kauer <florian.kauer@...utronix.de>
> Reviewed-by: Kurt Kanzenbach <kurt@...utronix.de>
> ---
>   drivers/net/ethernet/intel/igc/igc.h      | 2 +-
>   drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
>   drivers/net/ethernet/intel/igc/igc_tsn.c  | 2 +-
>   3 files changed, 3 insertions(+), 3 deletions(-)

Tested-by: Naama Meir <naamax.meir@...ux.intel.com>