net/mlx5: Restrict domain list insertion to root TSAR ancestors

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@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index f2a0d59fa5bb03af8395d5f98a81638bbad3b058..dd6fe729f456d7bc0a52f47fb4dcf003d5dd9ac8 100644 (file)
--- 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;
 }