netdev - [PATCH net-next 1/9] net: benet: convert to use .get_rx_ring

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Message-Id: <20260121-grxring_big_v4-v1-1-07655be56bcf@debian.org>
Date: Wed, 21 Jan 2026 07:54:38 -0800
From: Breno Leitao <leitao@...ian.org>
To: Ajit Khaparde <ajit.khaparde@...adcom.com>, 
 Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>, 
 Somnath Kotur <somnath.kotur@...adcom.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>, 
 Igor Russkikh <irusskikh@...vell.com>, Simon Horman <horms@...nel.org>, 
 "K. Y. Srinivasan" <kys@...rosoft.com>, 
 Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, 
 Dexuan Cui <decui@...rosoft.com>, Long Li <longli@...rosoft.com>, 
 Alexander Duyck <alexanderduyck@...com>, kernel-team@...a.com, 
 Edward Cree <ecree.xilinx@...il.com>, Brett Creeley <brett.creeley@....com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 oss-drivers@...igine.com, linux-hyperv@...r.kernel.org, 
 linux-net-drivers@....com, Breno Leitao <leitao@...ian.org>
Subject: [PATCH net-next 1/9] net: benet: convert to use .get_rx_ring_count

Use the newly introduced .get_rx_ring_count ethtool ops callback instead
of handling ETHTOOL_GRXRINGS directly in .get_rxnfc().

Since ETHTOOL_GRXRINGS was the only command handled by be_get_rxnfc(),
remove the function entirely.

Since the be_multi_rxq() check in be_get_rxnfc() previously blocked RSS
configuration on single-queue setups (via ethtool core validation), add
an equivalent check to be_set_rxfh() to preserve this behavior, as
suggested by Jakub.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 drivers/net/ethernet/emulex/benet/be_ethtool.c | 37 ++++++++++----------------
 1 file changed, 14 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c
index f55f1fd5d90fd..87dbbd5b7f4e6 100644
--- a/drivers/net/ethernet/emulex/benet/be_ethtool.c
+++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c
@@ -1073,6 +1073,13 @@ static void be_set_msg_level(struct net_device *netdev, u32 level)
 	adapter->msg_enable = level;
 }

+static u32 be_get_rx_ring_count(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	return adapter->num_rx_qs;
+}
+
 static int be_get_rxfh_fields(struct net_device *netdev,
 			      struct ethtool_rxfh_fields *cmd)
 {
@@ -1117,28 +1124,6 @@ static int be_get_rxfh_fields(struct net_device *netdev,
 	return 0;
 }

-static int be_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
-			u32 *rule_locs)
-{
-	struct be_adapter *adapter = netdev_priv(netdev);
-
-	if (!be_multi_rxq(adapter)) {
-		dev_info(&adapter->pdev->dev,
-			 "ethtool::get_rxnfc: RX flow hashing is disabled\n");
-		return -EINVAL;
-	}
-
-	switch (cmd->cmd) {
-	case ETHTOOL_GRXRINGS:
-		cmd->data = adapter->num_rx_qs;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 static int be_set_rxfh_fields(struct net_device *netdev,
 			      const struct ethtool_rxfh_fields *cmd,
 			      struct netlink_ext_ack *extack)
@@ -1293,6 +1278,12 @@ static int be_set_rxfh(struct net_device *netdev,
 	u8 *hkey = rxfh->key;
 	u8 rsstable[RSS_INDIR_TABLE_LEN];

+	if (!be_multi_rxq(adapter)) {
+		dev_info(&adapter->pdev->dev,
+			 "ethtool::set_rxfh: RX flow hashing is disabled\n");
+		return -EINVAL;
+	}
+
 	/* We do not allow change in unsupported parameters */
 	if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
 	    rxfh->hfunc != ETH_RSS_HASH_TOP)
@@ -1441,7 +1432,7 @@ const struct ethtool_ops be_ethtool_ops = {
 	.get_ethtool_stats = be_get_ethtool_stats,
 	.flash_device = be_do_flash,
 	.self_test = be_self_test,
-	.get_rxnfc = be_get_rxnfc,
+	.get_rx_ring_count = be_get_rx_ring_count,
 	.get_rxfh_fields = be_get_rxfh_fields,
 	.set_rxfh_fields = be_set_rxfh_fields,
 	.get_rxfh_indir_size = be_get_rxfh_indir_size,

-- 
2.47.3