netdev - Re: [PATCH net-next 3/3] igc: Remove reset adapter task for i226 during disable tsn config

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Date:   Wed, 4 Jan 2023 09:31:43 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Tony Nguyen <anthony.l.nguyen@...el.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com,
        Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>,
        netdev@...r.kernel.org, sasha.neftin@...el.com,
        Naama Meir <naamax.meir@...ux.intel.com>
Subject: Re: [PATCH net-next 3/3] igc: Remove reset adapter task for i226
 during disable tsn config

On Tue, Jan 03, 2023 at 03:05:03PM -0800, Tony Nguyen wrote:
> From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
> 
> I225 have limitation when programming the BaseTime register which required
> a power cycle of the controller. This limitation already lifted in I226.
> This patch removes the restriction so that when user configure/remove any
> TSN mode, it would not go into power cycle reset adapter.
> 
> How to test:
> 
> Schedule any gate control list configuration or delete it.
> 
> Example:
> 
> 1)
> 
> BASE_TIME=$(date +%s%N)
> tc qdisc replace dev $interface_name parent root handle 100 taprio \
>     num_tc 4 \
>     map 3 1 0 2 3 3 3 3 3 3 3 3 3 3 3 3 \
>     queues 1@0 1@1 1@2 1@3 \
>     base-time $BASE_TIME \
>     sched-entry S 0F 1000000 \
>     flags 0x2
> 
> 2) tc qdisc del dev $intername_name root
> 
> Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
> Tested-by: Naama Meir <naamax.meir@...ux.intel.com>
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
> ---
>  drivers/net/ethernet/intel/igc/igc_main.c |  6 +++---
>  drivers/net/ethernet/intel/igc/igc_tsn.c  | 11 +++--------
>  drivers/net/ethernet/intel/igc/igc_tsn.h  |  2 +-
>  3 files changed, 7 insertions(+), 12 deletions(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>