diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 8fd38ad8113b..280ea1e1e039 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -190,6 +190,14 @@ struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = { [NIC_ZONE_RESTORE_TO_REG] = nic_zone_restore_to_reg_ct, }; +/* To avoid false lock dependency warning set the tc_ht lock + * class different than the lock class of the ht being used when deleting + * last flow from a group and then deleting a group, we get into del_sw_flow_group() + * which call rhashtable_destroy on fg->ftes_hash which will take ht->mutex but + * it's different than the ht->mutex here. + */ +static struct lock_class_key tc_ht_lock_key; + static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow); void @@ -5215,6 +5223,8 @@ int mlx5e_tc_nic_init(struct mlx5e_priv *priv) if (err) return err; + lockdep_set_class(&tc->ht.mutex, &tc_ht_lock_key); + if (MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) { attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED | MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED; @@ -5333,6 +5343,8 @@ int mlx5e_tc_esw_init(struct rhashtable *tc_ht) if (err) goto err_ht_init; + lockdep_set_class(&tc_ht->mutex, &tc_ht_lock_key); + return err; err_ht_init: |