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Date: Fri, 17 Jun 2016 17:43:44 +0300
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Doug Ledford <dledford@...hat.com>,
Or Gerlitz <ogerlitz@...lanox.com>,
Maor Gottlieb <maorg@...lanox.com>,
Huy Nguyen <huyn@...lanox.com>, Tal Alon <talal@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [PATCH net-next 03/18] net/mlx5: Properly remove all steering objects
From: Maor Gottlieb <maorg@...lanox.com>
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 <maorg@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/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 dcd3082..ea90b66 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -1650,115 +1650,24 @@ 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)
@@ -1768,10 +1677,10 @@ 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);
}
@@ -1787,7 +1696,8 @@ 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;
--
2.8.0
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