netdev - [PATCH net-next 04/15] net/mlx5: Restrict domain list insertion to root TSAR ancestors

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Message-ID: <20241013064540.170722-5-tariqt@nvidia.com>
Date: Sun, 13 Oct 2024 09:45:29 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>
CC: <netdev@...r.kernel.org>, Saeed Mahameed <saeedm@...dia.com>, Gal Pressman
	<gal@...dia.com>, Leon Romanovsky <leonro@...dia.com>, <cjubran@...dia.com>,
	<cratiu@...dia.com>, Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH net-next 04/15] net/mlx5: Restrict domain list insertion to root TSAR ancestors

From: Carolina Jubran <cjubran@...dia.com>

Update the logic for adding rate groups to the E-Switch domain list,
ensuring only groups with the root Transmit Scheduling Arbiter as their
parent are included.

Signed-off-by: Carolina Jubran <cjubran@...dia.com>
Reviewed-by: Cosmin Ratiu <cratiu@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index e9ddd7f4ac80..65fd346d0e91 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
@@ -511,6 +511,7 @@ __esw_qos_alloc_rate_group(struct mlx5_eswitch *esw, u32 tsar_ix, enum sched_nod
 			   struct mlx5_esw_rate_group *parent)
 {
 	struct mlx5_esw_rate_group *group;
+	struct list_head *parent_list;
 
 	group = kzalloc(sizeof(*group), GFP_KERNEL);
 	if (!group)
@@ -521,7 +522,9 @@ __esw_qos_alloc_rate_group(struct mlx5_eswitch *esw, u32 tsar_ix, enum sched_nod
 	group->type = type;
 	group->parent = parent;
 	INIT_LIST_HEAD(&group->members);
-	list_add_tail(&group->parent_entry, &esw->qos.domain->groups);
+	parent_list = parent ? &parent->members : &esw->qos.domain->groups;
+	list_add_tail(&group->parent_entry, parent_list);
+
 	return group;
 }
 
-- 
2.44.0