linux-kernel - RE: [Intel-wired-lan] [PATCH net-next 1/8] i40e: extract GRXRINGS from .get

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Message-ID: <IA3PR11MB898611421333E6356065540AE5D1A@IA3PR11MB8986.namprd11.prod.outlook.com>
Date: Tue, 25 Nov 2025 06:50:24 +0000
From: "Loktionov, Aleksandr" <aleksandr.loktionov@...el.com>
To: Breno Leitao <leitao@...ian.org>, "Lobakin, Aleksander"
	<aleksander.lobakin@...el.com>, "Nguyen, Anthony L"
	<anthony.l.nguyen@...el.com>, "Kitszel, Przemyslaw"
	<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>
CC: "michal.swiatkowski@...ux.intel.com" <michal.swiatkowski@...ux.intel.com>,
	"michal.kubiak@...el.com" <michal.kubiak@...el.com>, "Fijalkowski, Maciej"
	<maciej.fijalkowski@...el.com>, "intel-wired-lan@...ts.osuosl.org"
	<intel-wired-lan@...ts.osuosl.org>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "kernel-team@...a.com" <kernel-team@...a.com>
Subject: RE: [Intel-wired-lan] [PATCH net-next 1/8] i40e: extract GRXRINGS
 from .get_rxnfc



> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Breno Leitao
> Sent: Monday, November 24, 2025 7:19 PM
> To: Lobakin, Aleksander <aleksander.lobakin@...el.com>; Nguyen, Anthony L
> <anthony.l.nguyen@...el.com>; Kitszel, Przemyslaw
> <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>
> Cc: michal.swiatkowski@...ux.intel.com; michal.kubiak@...el.com;
> Fijalkowski, Maciej <maciej.fijalkowski@...el.com>; intel-wired-
> lan@...ts.osuosl.org; netdev@...r.kernel.org; linux-kernel@...r.kernel.org;
> kernel-team@...a.com; Breno Leitao <leitao@...ian.org>
> Subject: [Intel-wired-lan] [PATCH net-next 1/8] i40e: extract GRXRINGS from
> .get_rxnfc
> 
> Commit 84eaf4359c36 ("net: ethtool: add get_rx_ring_count callback to
> optimize RX ring queries") added specific support for GRXRINGS callback,
> simplifying .get_rxnfc.
> 
> Remove the handling of GRXRINGS in .get_rxnfc() by moving it to the new
> .get_rx_ring_count().
> 
> This simplifies the RX ring count retrieval and aligns i40e with the new
> ethtool API for querying RX ring parameters.
> 
> Signed-off-by: Breno Leitao <leitao@...ian.org>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> index 86c72596617a..64d0797f5f5e 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> @@ -3521,6 +3521,20 @@ static int i40e_get_ethtool_fdir_entry(struct i40e_pf
> *pf,
>  	return 0;
>  }
> 
> +/**
> + * i40e_get_rx_ring_count - get RX ring count
> + * @netdev: network interface device structure
> + *
> + * Returns the number of RX rings.
> + **/
> +static u32 i40e_get_rx_ring_count(struct net_device *netdev) {
> +	struct i40e_netdev_priv *np = netdev_priv(netdev);
> +	struct i40e_vsi *vsi = np->vsi;
> +
> +	return vsi->rss_size;
> +}
> +
>  /**
>   * i40e_get_rxnfc - command to get RX flow classification rules
>   * @netdev: network interface device structure @@ -3538,10 +3552,6 @@
> static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc
> *cmd,
>  	int ret = -EOPNOTSUPP;
> 
>  	switch (cmd->cmd) {
> -	case ETHTOOL_GRXRINGS:
> -		cmd->data = vsi->rss_size;
> -		ret = 0;
> -		break;
>  	case ETHTOOL_GRXCLSRLCNT:
>  		cmd->rule_cnt = pf->fdir_pf_active_filters;
>  		/* report total rule count */
> @@ -5819,6 +5829,7 @@ static const struct ethtool_ops i40e_ethtool_ops = {
>  	.set_msglevel		= i40e_set_msglevel,
>  	.get_rxnfc		= i40e_get_rxnfc,
>  	.set_rxnfc		= i40e_set_rxnfc,
> +	.get_rx_ring_count	= i40e_get_rx_ring_count,
>  	.self_test		= i40e_diag_test,
>  	.get_strings		= i40e_get_strings,
>  	.get_eee		= i40e_get_eee,
> 
> --
> 2.47.3

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>