linux-kernel - [PATCH net-next] net: thunder: convert to use .get_rx_ring

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Message-Id: <20251126-gxring_cavium-v1-1-a066c0c9e0c6@debian.org>
Date: Wed, 26 Nov 2025 02:54:40 -0800
From: Breno Leitao <leitao@...ian.org>
To: Sunil Goutham <sgoutham@...vell.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: linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, kernel-team@...a.com, 
 Breno Leitao <leitao@...ian.org>
Subject: [PATCH net-next] net: thunder: convert to use .get_rx_ring_count

Convert the Cavium Thunder NIC VF driver to use the new .get_rx_ring_count
ethtool operation instead of implementing .get_rxnfc solely for handling
ETHTOOL_GRXRINGS command. This simplifies the code by removing the
switch statement and replacing it with a direct return of the queue
count.

The new callback provides the same functionality in a more direct way,
following the ongoing ethtool API modernization.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
index fc6053414b7d..413028bdcacb 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
@@ -541,21 +541,11 @@ static int nicvf_get_rxfh_fields(struct net_device *dev,
 	return 0;
 }

-static int nicvf_get_rxnfc(struct net_device *dev,
-			   struct ethtool_rxnfc *info, u32 *rules)
+static u32 nicvf_get_rx_ring_count(struct net_device *dev)
 {
 	struct nicvf *nic = netdev_priv(dev);
-	int ret = -EOPNOTSUPP;

-	switch (info->cmd) {
-	case ETHTOOL_GRXRINGS:
-		info->data = nic->rx_queues;
-		ret = 0;
-		break;
-	default:
-		break;
-	}
-	return ret;
+	return nic->rx_queues;
 }

 static int nicvf_set_rxfh_fields(struct net_device *dev,
@@ -861,7 +851,7 @@ static const struct ethtool_ops nicvf_ethtool_ops = {
 	.get_coalesce		= nicvf_get_coalesce,
 	.get_ringparam		= nicvf_get_ringparam,
 	.set_ringparam		= nicvf_set_ringparam,
-	.get_rxnfc		= nicvf_get_rxnfc,
+	.get_rx_ring_count	= nicvf_get_rx_ring_count,
 	.get_rxfh_key_size	= nicvf_get_rxfh_key_size,
 	.get_rxfh_indir_size	= nicvf_get_rxfh_indir_size,
 	.get_rxfh		= nicvf_get_rxfh,

---
base-commit: ab084f0b8d6d2ee4b1c6a28f39a2a7430bdfa7f0
change-id: 20251126-gxring_cavium-de39ec6136ee

Best regards,
--  
Breno Leitao <leitao@...ian.org>