From: Carolina Jubran <cjubran@nvidia.com>
Date: Thu, 10 Jul 2025 13:53:42 +0000 (+0300)
Subject: net/mlx5: Reset bw_share field when changing a node's parent
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=f7b76466894083c8f518cf29fef75fcd3ec670e5;p=linux-block.git

net/mlx5: Reset bw_share field when changing a node's parent

When changing a node's parent, its scheduling element is destroyed and
re-created with bw_share 0. However, the node's bw_share field was not
updated accordingly.

Set the node's bw_share to 0 after re-creation to keep the software
state in sync with the firmware configuration.

Fixes: 9c7bbf4c3304 ("net/mlx5: Add support for setting parent of nodes")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/1752155624-24095-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index b6ae384396b3..ad9f6fca9b6a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
@@ -1076,6 +1076,7 @@ static int esw_qos_vports_node_update_parent(struct mlx5_esw_sched_node *node,
 		return err;
 	}
 	esw_qos_node_set_parent(node, parent);
+	node->bw_share = 0;
 
 	return 0;
 }