linux-kernel - Re: [PATCH net-next 1/2] rtase: Link IRQs to NAPI instances

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Message-ID: <aEmJ-b8ogdb3U5M4@MacBook-Air.local>
Date: Wed, 11 Jun 2025 16:51:53 +0300
From: Joe Damato <joe@...a.to>
To: Justin Lai <justinlai0215@...ltek.com>
Cc: kuba@...nel.org, davem@...emloft.net, edumazet@...gle.com,
	pabeni@...hat.com, andrew+netdev@...n.ch,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	horms@...nel.org, jdamato@...tly.com, pkshih@...ltek.com,
	larry.chiu@...ltek.com
Subject: Re: [PATCH net-next 1/2] rtase: Link IRQs to NAPI instances

On Tue, Jun 10, 2025 at 06:33:33PM +0800, Justin Lai wrote:
> Link IRQs to NAPI instances with netif_napi_set_irq. This
> information can be queried with the netdev-genl API.
> 
> Signed-off-by: Justin Lai <justinlai0215@...ltek.com>
> ---
>  .../net/ethernet/realtek/rtase/rtase_main.c   | 20 +++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c
> index 4d37217e9a14..a88af868da8c 100644
> --- a/drivers/net/ethernet/realtek/rtase/rtase_main.c
> +++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
> @@ -1871,6 +1871,18 @@ static void rtase_init_netdev_ops(struct net_device *dev)
>  	dev->ethtool_ops = &rtase_ethtool_ops;
>  }
>  
> +static void rtase_init_napi(struct rtase_private *tp)
> +{
> +	u16 i;
> +
> +	for (i = 0; i < tp->int_nums; i++) {
> +		netif_napi_add(tp->dev, &tp->int_vector[i].napi,
> +			       tp->int_vector[i].poll);

Maybe netif_napi_add_config can be used either in this patch or in an added
3rd patch to this series to support persitent NAPI config?

Otherwise:

Reviewed-by: Joe Damato <joe@...a.to>

> +		netif_napi_set_irq(&tp->int_vector[i].napi,
> +				   tp->int_vector[i].irq);
> +	}
> +}
> +
>  static void rtase_reset_interrupt(struct pci_dev *pdev,
>  				  const struct rtase_private *tp)
>  {
> @@ -1956,9 +1968,6 @@ static void rtase_init_int_vector(struct rtase_private *tp)
>  	memset(tp->int_vector[0].name, 0x0, sizeof(tp->int_vector[0].name));
>  	INIT_LIST_HEAD(&tp->int_vector[0].ring_list);
>  
> -	netif_napi_add(tp->dev, &tp->int_vector[0].napi,
> -		       tp->int_vector[0].poll);
> -
>  	/* interrupt vector 1 ~ 3 */
>  	for (i = 1; i < tp->int_nums; i++) {
>  		tp->int_vector[i].tp = tp;
> @@ -1972,9 +1981,6 @@ static void rtase_init_int_vector(struct rtase_private *tp)
>  		memset(tp->int_vector[i].name, 0x0,
>  		       sizeof(tp->int_vector[0].name));
>  		INIT_LIST_HEAD(&tp->int_vector[i].ring_list);
> -
> -		netif_napi_add(tp->dev, &tp->int_vector[i].napi,
> -			       tp->int_vector[i].poll);
>  	}
>  }
>  
> @@ -2206,6 +2212,8 @@ static int rtase_init_one(struct pci_dev *pdev,
>  		goto err_out_del_napi;
>  	}
>  
> +	rtase_init_napi(tp);
> +
>  	rtase_init_netdev_ops(dev);
>  
>  	dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
> -- 
> 2.34.1
> 
>