linux-kernel - Re: [Intel-wired-lan] [PATCH net-next] net: ixgbe: convert to use .get_rx_ring

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Message-ID: <73e29237-4937-4cc7-9830-427bf7464591@molgen.mpg.de>
Date: Wed, 12 Nov 2025 11:35:58 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Breno Leitao <leitao@...ian.org>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>,
 Przemek Kitszel <przemyslaw.kitszel@...el.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, kernel-team@...a.com
Subject: Re: [Intel-wired-lan] [PATCH net-next] net: ixgbe: convert to use
 .get_rx_ring_count

Dear Breno,


Thank you for your patch.

Am 12.11.25 um 11:23 schrieb Breno Leitao:
> Convert the ixgbe driver to use the new .get_rx_ring_count ethtool
> operation for handling ETHTOOL_GRXRINGS command. This simplifies the
> code by extracting the ring count logic into a dedicated callback.
> 
> The new callback provides the same functionality in a more direct way,
> following the ongoing ethtool API modernization.

Maybe add a paragraph how you tested this.

> Signed-off-by: Breno Leitao <leitao@...ian.org>
> ---
>   drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 15 ++++++++++-----
>   1 file changed, 10 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> index 2d660e9edb80..2ad81f687a84 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> @@ -2805,6 +2805,14 @@ static int ixgbe_rss_indir_tbl_max(struct ixgbe_adapter *adapter)
>   		return 64;
>   }
>   
> +static u32 ixgbe_get_rx_ring_count(struct net_device *dev)
> +{
> +	struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev);
> +
> +	return min_t(u32, adapter->num_rx_queues,
> +		     ixgbe_rss_indir_tbl_max(adapter));
> +}
> +
>   static int ixgbe_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
>   			   u32 *rule_locs)
>   {
> @@ -2812,11 +2820,6 @@ static int ixgbe_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
>   	int ret = -EOPNOTSUPP;
>   
>   	switch (cmd->cmd) {
> -	case ETHTOOL_GRXRINGS:
> -		cmd->data = min_t(int, adapter->num_rx_queues,
> -				  ixgbe_rss_indir_tbl_max(adapter));
> -		ret = 0;
> -		break;
>   	case ETHTOOL_GRXCLSRLCNT:
>   		cmd->rule_cnt = adapter->fdir_filter_count;
>   		ret = 0;
> @@ -3743,6 +3746,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops = {
>   	.get_ethtool_stats      = ixgbe_get_ethtool_stats,
>   	.get_coalesce           = ixgbe_get_coalesce,
>   	.set_coalesce           = ixgbe_set_coalesce,
> +	.get_rx_ring_count	= ixgbe_get_rx_ring_count,
>   	.get_rxnfc		= ixgbe_get_rxnfc,
>   	.set_rxnfc		= ixgbe_set_rxnfc,
>   	.get_rxfh_indir_size	= ixgbe_rss_indir_size,
> @@ -3791,6 +3795,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops_e610 = {
>   	.get_ethtool_stats      = ixgbe_get_ethtool_stats,
>   	.get_coalesce           = ixgbe_get_coalesce,
>   	.set_coalesce           = ixgbe_set_coalesce,
> +	.get_rx_ring_count	= ixgbe_get_rx_ring_count,
>   	.get_rxnfc		= ixgbe_get_rxnfc,
>   	.set_rxnfc		= ixgbe_set_rxnfc,
>   	.get_rxfh_indir_size	= ixgbe_rss_indir_size,

Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>


Kind regards,

Paul