From 0da2d66666d32769fa0aebb5f1d2d0a86be6c5d2 Mon Sep 17 00:00:00 2001 From: Maor Gottlieb Date: Mon, 4 Jul 2016 17:23:07 +0300 Subject: [PATCH] net/mlx5: Properly remove all steering objects Instead of explicitly cleaning up the well known parts of the steering tree, we use the generic tree structure to traverse for cleanup. No functional changes. Signed-off-by: Maor Gottlieb Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/fs_core.c | 120 +++--------------- 1 file changed, 15 insertions(+), 105 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index 0f969cb2291a..3e9577537b52 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -1663,115 +1663,24 @@ cleanup: return -ENOMEM; } -static void cleanup_single_prio_root_ns(struct mlx5_flow_steering *steering, - struct mlx5_flow_root_namespace *root_ns) +static void clean_tree(struct fs_node *node) { - struct fs_node *prio; - - if (!root_ns) - return; + if (node) { + struct fs_node *iter; + struct fs_node *temp; - if (!list_empty(&root_ns->ns.node.children)) { - prio = list_first_entry(&root_ns->ns.node.children, - struct fs_node, - list); - if (tree_remove_node(prio)) - mlx5_core_warn(steering->dev, - "Flow steering priority wasn't destroyed, refcount > 1\n"); + list_for_each_entry_safe(iter, temp, &node->children, list) + clean_tree(iter); + tree_remove_node(node); } - if (tree_remove_node(&root_ns->ns.node)) - mlx5_core_warn(steering->dev, - "Flow steering namespace wasn't destroyed, refcount > 1\n"); - root_ns = NULL; -} - -static void destroy_flow_tables(struct fs_prio *prio) -{ - struct mlx5_flow_table *iter; - struct mlx5_flow_table *tmp; - - fs_for_each_ft_safe(iter, tmp, prio) - mlx5_destroy_flow_table(iter); } -static void cleanup_root_ns(struct mlx5_flow_steering *steering) +static void cleanup_root_ns(struct mlx5_flow_root_namespace *root_ns) { - struct mlx5_flow_root_namespace *root_ns = steering->root_ns; - struct fs_prio *iter_prio; - - if (!MLX5_CAP_GEN(steering->dev, nic_flow_table)) - return; - if (!root_ns) return; - /* stage 1 */ - fs_for_each_prio(iter_prio, &root_ns->ns) { - struct fs_node *node; - struct mlx5_flow_namespace *iter_ns; - - fs_for_each_ns_or_ft(node, iter_prio) { - if (node->type == FS_TYPE_FLOW_TABLE) - continue; - fs_get_obj(iter_ns, node); - while (!list_empty(&iter_ns->node.children)) { - struct fs_prio *obj_iter_prio2; - struct fs_node *iter_prio2 = - list_first_entry(&iter_ns->node.children, - struct fs_node, - list); - - fs_get_obj(obj_iter_prio2, iter_prio2); - destroy_flow_tables(obj_iter_prio2); - if (tree_remove_node(iter_prio2)) { - mlx5_core_warn(steering->dev, - "Priority %d wasn't destroyed, refcount > 1\n", - obj_iter_prio2->prio); - return; - } - } - } - } - - /* stage 2 */ - fs_for_each_prio(iter_prio, &root_ns->ns) { - while (!list_empty(&iter_prio->node.children)) { - struct fs_node *iter_ns = - list_first_entry(&iter_prio->node.children, - struct fs_node, - list); - if (tree_remove_node(iter_ns)) { - mlx5_core_warn(steering->dev, - "Namespace wasn't destroyed, refcount > 1\n"); - return; - } - } - } - - /* stage 3 */ - while (!list_empty(&root_ns->ns.node.children)) { - struct fs_prio *obj_prio_node; - struct fs_node *prio_node = - list_first_entry(&root_ns->ns.node.children, - struct fs_node, - list); - - fs_get_obj(obj_prio_node, prio_node); - if (tree_remove_node(prio_node)) { - mlx5_core_warn(steering->dev, - "Priority %d wasn't destroyed, refcount > 1\n", - obj_prio_node->prio); - return; - } - } - - if (tree_remove_node(&root_ns->ns.node)) { - mlx5_core_warn(steering->dev, - "root namespace wasn't destroyed, refcount > 1\n"); - return; - } - - steering->root_ns = NULL; + clean_tree(&root_ns->ns.node); } void mlx5_cleanup_fs(struct mlx5_core_dev *dev) @@ -1781,10 +1690,10 @@ void mlx5_cleanup_fs(struct mlx5_core_dev *dev) if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH) return; - cleanup_root_ns(steering); - cleanup_single_prio_root_ns(steering, steering->esw_egress_root_ns); - cleanup_single_prio_root_ns(steering, steering->esw_ingress_root_ns); - cleanup_single_prio_root_ns(steering, steering->fdb_root_ns); + cleanup_root_ns(steering->root_ns); + cleanup_root_ns(steering->esw_egress_root_ns); + cleanup_root_ns(steering->esw_ingress_root_ns); + cleanup_root_ns(steering->fdb_root_ns); mlx5_cleanup_fc_stats(dev); kfree(steering); } @@ -1800,7 +1709,8 @@ static int init_fdb_root_ns(struct mlx5_flow_steering *steering) /* Create single prio */ prio = fs_create_prio(&steering->fdb_root_ns->ns, 0, 1); if (IS_ERR(prio)) { - cleanup_single_prio_root_ns(steering, steering->fdb_root_ns); + cleanup_root_ns(steering->fdb_root_ns); + steering->fdb_root_ns = NULL; return PTR_ERR(prio); } else { return 0; -- 2.20.1