linux-kernel - [PATCH net-next 13/14] net/mlx5: qos: Enable cross-device scheduling

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Message-ID: <1763644166-1250608-14-git-send-email-tariqt@nvidia.com>
Date: Thu, 20 Nov 2025 15:09:25 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>
CC: Donald Hunter <donald.hunter@...il.com>, Jiri Pirko <jiri@...nulli.us>,
	Jonathan Corbet <corbet@....net>, Saeed Mahameed <saeedm@...dia.com>, "Leon
 Romanovsky" <leon@...nel.org>, Tariq Toukan <tariqt@...dia.com>, Mark Bloch
	<mbloch@...dia.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, Gal Pressman <gal@...dia.com>, Moshe Shemesh
	<moshe@...dia.com>, Carolina Jubran <cjubran@...dia.com>, Cosmin Ratiu
	<cratiu@...dia.com>, Jiri Pirko <jiri@...dia.com>
Subject: [PATCH net-next 13/14] net/mlx5: qos: Enable cross-device scheduling

From: Cosmin Ratiu <cratiu@...dia.com>

Enable the new devlink feature.
All rate nodes will be stored in the shared device, when available.
The shared instance lock will additionally be acquired by all rate
manipulation code to protect against concurrent execution across
different functions of the same physical device.

Signed-off-by: Cosmin Ratiu <cratiu@...dia.com>
Reviewed-by: Carolina Jubran <cjubran@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index 887adf4807d1..343fb3c52fce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -380,6 +380,7 @@ static const struct devlink_ops mlx5_devlink_ops = {
 	.rate_node_del = mlx5_esw_devlink_rate_node_del,
 	.rate_leaf_parent_set = mlx5_esw_devlink_rate_leaf_parent_set,
 	.rate_node_parent_set = mlx5_esw_devlink_rate_node_parent_set,
+	.supported_cross_device_rate_nodes = true,
 #endif
 #ifdef CONFIG_MLX5_SF_MANAGER
 	.port_new = mlx5_devlink_sf_port_new,
-- 
2.31.1