linux-kernel - [net-next PATCH v2 2/2] octeon_ep_vf: Add support to retrieve hardware channel information

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Message-ID: <20250925125134.22421-3-sedara@marvell.com>
Date: Thu, 25 Sep 2025 05:51:34 -0700
From: Sathesh B Edara <sedara@...vell.com>
To: <linux-kernel@...r.kernel.org>, <sburla@...vell.com>, <vburru@...vell.com>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <netdev@...r.kernel.org>, <hgani@...vell.com>,
        <andrew@...n.ch>, <srasheed@...vell.com>
CC: <sedara@...vell.com>, Andrew Lunn <andrew+netdev@...n.ch>
Subject: [net-next PATCH v2 2/2] octeon_ep_vf: Add support to retrieve hardware channel information

This patch introduces support for retrieving hardware channel
configuration through the ethtool interface.

Signed-off-by: Sathesh B Edara <sedara@...vell.com>
---
Find V1 here:
https://lore.kernel.org/netdev/20250923094120.13133-3-sedara@marvell.com/

V2:
- Corrected channel counts to combined.

 .../ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
index d60441928ba9..241a7e7c7ad2 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
@@ -244,6 +244,15 @@ static int octep_vf_get_link_ksettings(struct net_device *netdev,
 	return 0;
 }
 
+static void octep_vf_get_channels(struct net_device *dev,
+				  struct ethtool_channels *channel)
+{
+	struct octep_vf_device *oct = netdev_priv(dev);
+
+	channel->max_combined = CFG_GET_PORTS_MAX_IO_RINGS(oct->conf);
+	channel->combined_count = CFG_GET_PORTS_ACTIVE_IO_RINGS(oct->conf);
+}
+
 static const struct ethtool_ops octep_vf_ethtool_ops = {
 	.get_drvinfo = octep_vf_get_drvinfo,
 	.get_link = ethtool_op_get_link,
@@ -251,6 +260,7 @@ static const struct ethtool_ops octep_vf_ethtool_ops = {
 	.get_sset_count = octep_vf_get_sset_count,
 	.get_ethtool_stats = octep_vf_get_ethtool_stats,
 	.get_link_ksettings = octep_vf_get_link_ksettings,
+	.get_channels = octep_vf_get_channels,
 };
 
 void octep_vf_set_ethtool_ops(struct net_device *netdev)
-- 
2.36.0