linux-kernel - [PATCH net-next v4 2/2] net: stmmac: Tx coe sw fallback

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Message-Id: <20230819005326.22204-1-rohan.g.thomas@intel.com>
Date:   Sat, 19 Aug 2023 08:53:26 +0800
From:   Rohan G Thomas <rohan.g.thomas@...el.com>
To:     fancer.lancer@...il.com
Cc:     alexandre.torgue@...s.st.com, conor+dt@...nel.org,
        davem@...emloft.net, devicetree@...r.kernel.org,
        edumazet@...gle.com, joabreu@...opsys.com,
        krzysztof.kozlowski+dt@...aro.org, kuba@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        mcoquelin.stm32@...il.com, netdev@...r.kernel.org,
        pabeni@...hat.com, peppe.cavallaro@...com, robh+dt@...nel.org,
        rohan.g.thomas@...el.com
Subject: [PATCH net-next v4 2/2] net: stmmac: Tx coe sw fallback

On Fri, Aug 18, 2023 at 09:53:50PM +0800, Rohan G Thomas wrote:
>> +	u32 flags;
>
>This looks redundant. See my last comment.
>
>> +
>
>> +	u32 tx_q_with_coe;
>
>This one too. Can't you just use the
>plat_stmmacenet_data.tx_queues_with_coe field?
>
>> +	if (priv->plat->tx_coe &&
>> +	    priv->plat->tx_queues_with_coe < priv->plat->tx_queues_to_use) {
>> +		priv->flags |= STMMAC_PRIV_FLG_TXQ_COE_LIMIT;
>> +		priv->tx_q_with_coe = priv->plat->tx_queues_with_coe;
>> +		dev_info(priv->device, "TX COE limited to %u tx queues\n",
>> +			 priv->tx_q_with_coe);
>> +	}
>
>What about:
>+	if (priv->plat->tx_coe && !priv->plat->tx_queues_with_coe)
>+		priv->plat->tx_queues_with_coe = priv->plat->tx_queues_to_use;
>+	else if (!priv->plat->tx_coe)
>+		priv->plat->tx_queues_with_coe = 0;
>+	else if (priv->plat->tx_queues_with_coe < priv->plat->tx_queues_to_use)
>+		dev_info(priv->device, "TX COE is available for %u queues\n", priv->plat->tx_queues_with_coe);
>
>?
>
>-Serge(y)

Hi Serge,

Agreed.
Thanks for the suggestion. Will rework in next version.

BR,
Rohan

>> 
>>