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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 <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maor Gottlieb 2016-07-04 17:23:07 +03:00 committed by David S. Miller
parent fba53f7b57
commit 0da2d66666
1 changed files with 19 additions and 109 deletions
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128
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
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@ -1663,115 +1663,24 @@ static int init_root_ns(struct mlx5_flow_steering *steering)
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 (node) {
struct fs_node *iter;
struct fs_node *temp;
list_for_each_entry_safe(iter, temp, &node->children, list)
clean_tree(iter);
tree_remove_node(node);
}
}
static void cleanup_root_ns(struct mlx5_flow_root_namespace *root_ns)
{
if (!root_ns)
return;
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");
}
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)
{
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;