netdev - RE: [EXT] Re: [net-next PATCH V5] octeontx2-pf: Add egress PFC support

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Date:   Tue, 30 Aug 2022 12:03:48 +0000
From:   Suman Ghosh <sumang@...vell.com>
To:     Paolo Abeni <pabeni@...hat.com>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geethasowjanya Akula <gakula@...vell.com>,
        Jerin Jacob Kollanukkaran <jerinj@...vell.com>,
        Hariprasad Kelam <hkelam@...vell.com>,
        Subbaraya Sundeep Bhatta <sbhatta@...vell.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [EXT] Re: [net-next PATCH V5] octeontx2-pf: Add egress PFC
 support

>> +int otx2_pfc_txschq_update(struct otx2_nic *pfvf) {
>> +	u8 pfc_en = pfvf->pfc_en, pfc_bit_set;
>> +	struct mbox *mbox = &pfvf->mbox;
>> +	bool if_up = netif_running(pfvf->netdev);
>
>please, respect the reverse x-mas tree in variables declaration.
[Suman] Done
>
>[...]
>> @@ -1853,6 +1880,32 @@ static netdev_tx_t otx2_xmit(struct sk_buff
>*skb, struct net_device *netdev)
>>  	return NETDEV_TX_OK;
>>  }
>>
>> +static u16 otx2_select_queue(struct net_device *netdev, struct
>sk_buff *skb,
>> +			     struct net_device *sb_dev)
>> +{
>> +	struct otx2_nic *pf = netdev_priv(netdev); #ifdef CONFIG_DCB
>> +	u8 vlan_prio;
>> +#endif
>> +	int txq;
>> +
>> +#ifdef CONFIG_DCB
>> +	if (!skb->vlan_present)
>> +		goto pick_tx;
>> +
>> +	vlan_prio = skb->vlan_tci >> 13;
>> +	if ((vlan_prio > pf->hw.tx_queues - 1) ||
>> +	    !pf->pfc_alloc_status[vlan_prio])
>> +		goto pick_tx;
>> +
>> +	return vlan_prio;
>> +
>> +pick_tx:
>> +#endif
>> +	txq = netdev_pick_tx(netdev, skb, NULL);
>> +	return txq;
>
>You can just
>	return netdev_pick_tx(netdev, skb, NULL);
>
>and avoid declaring txq.
[Suman] Done
>
>Cheers,
>
>Paolo