From 2f436f1869771d46e1a9f85738d5a1a7c5653a4e Mon Sep 17 00:00:00 2001 From: Carolina Jubran Date: Tue, 9 Apr 2024 22:08:16 +0300 Subject: net/mlx5e: HTB, Fix inconsistencies with QoS SQs number When creating a new HTB class while the interface is down, the variable that follows the number of QoS SQs (htb_max_qos_sqs) may not be consistent with the number of HTB classes. Previously, we compared these two values to ensure that the node_qid is lower than the number of QoS SQs, and we allocated stats for that SQ when they are equal. Change the check to compare the node_qid with the current number of leaf nodes and fix the checking conditions to ensure allocation of stats_list and stats for each node. Fixes: 214baf22870c ("net/mlx5e: Support HTB offload") Signed-off-by: Carolina Jubran Reviewed-by: Tariq Toukan Reviewed-by: Dragos Tatulea Signed-off-by: Saeed Mahameed Signed-off-by: Tariq Toukan Link: https://lore.kernel.org/r/20240409190820.227554-9-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en/qos.c | 33 ++++++++++++------------ 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c index e87e26f2c669c..6743806b84806 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c @@ -83,24 +83,25 @@ int mlx5e_open_qos_sq(struct mlx5e_priv *priv, struct mlx5e_channels *chs, txq_ix = mlx5e_qid_from_qos(chs, node_qid); - WARN_ON(node_qid > priv->htb_max_qos_sqs); - if (node_qid == priv->htb_max_qos_sqs) { - struct mlx5e_sq_stats *stats, **stats_list = NULL; - - if (priv->htb_max_qos_sqs == 0) { - stats_list = kvcalloc(mlx5e_qos_max_leaf_nodes(priv->mdev), - sizeof(*stats_list), - GFP_KERNEL); - if (!stats_list) - return -ENOMEM; - } + WARN_ON(node_qid >= mlx5e_htb_cur_leaf_nodes(priv->htb)); + if (!priv->htb_qos_sq_stats) { + struct mlx5e_sq_stats **stats_list; + + stats_list = kvcalloc(mlx5e_qos_max_leaf_nodes(priv->mdev), + sizeof(*stats_list), GFP_KERNEL); + if (!stats_list) + return -ENOMEM; + + WRITE_ONCE(priv->htb_qos_sq_stats, stats_list); + } + + if (!priv->htb_qos_sq_stats[node_qid]) { + struct mlx5e_sq_stats *stats; + stats = kzalloc(sizeof(*stats), GFP_KERNEL); - if (!stats) { - kvfree(stats_list); + if (!stats) return -ENOMEM; - } - if (stats_list) - WRITE_ONCE(priv->htb_qos_sq_stats, stats_list); + WRITE_ONCE(priv->htb_qos_sq_stats[node_qid], stats); /* Order htb_max_qos_sqs increment after writing the array pointer. * Pairs with smp_load_acquire in en_stats.c. -- cgit 1.2.3-korg