linux-kernel - Re: [PATCH net 1/1] net: stmmac: set TxQ mode back to DCB after disabling CBS

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Date:   Thu, 4 Feb 2021 17:08:48 -0800
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     Song Yoong Siang <yoong.siang.song@...el.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "Maxime Coquelin" <mcoquelin.stm32@...il.com>,
        <netdev@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "Ong Boon Leong" <boon.leong.ong@...el.com>,
        Voon Wei Feng <weifeng.voon@...el.com>,
        Wong Vee Khee <vee.khee.wong@...el.com>,
        Gomes Vinicius <vinicius.gomes@...el.com>
Subject: Re: [PATCH net 1/1] net: stmmac: set TxQ mode back to DCB after
 disabling CBS

Song Yoong Siang wrote:

> From: Mohammad Athari Bin Ismail <mohammad.athari.ismail@...el.com>
> 
> When disable CBS, mode_to_use parameter is not updated even the operation
> mode of Tx Queue is changed to Data Centre Bridging (DCB). Therefore,
> when tc_setup_cbs() function is called to re-enable CBS, the operation
> mode of Tx Queue remains at DCB, which causing CBS fails to work.
> 
> This patch updates the value of mode_to_use parameter to MTL_QUEUE_DCB
> after operation mode of Tx Queue is changed to DCB in stmmac_dma_qmode()
> callback function.
> 
> Fixes: 1f705bc61aee ("net: stmmac: Add support for CBS QDISC")
> Suggested-by: Gomes, Vinicius <vinicius.gomes@...el.com>
> Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@...el.com>
> Signed-off-by: Song, Yoong Siang <yoong.siang.song@...el.com>

Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>