[PATCH net-next v4 2/9] net: marvell: prestera: Add cleanup of allocated fib_nodes

From: Yevhen Orlov
Date: Thu Aug 25 2022 - 16:24:53 EST


Do explicity cleanup on router_hw_fini, to ensure, that all allocated
objects cleaned. This will be used in cases, when upper layer (cache) is not
mapped to router_hw layer.

Co-developed-by: Taras Chornyi <tchornyi@xxxxxxxxxxx>
Signed-off-by: Taras Chornyi <tchornyi@xxxxxxxxxxx>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@xxxxxxxxxxx>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@xxxxxxxxxxx>
Signed-off-by: Yevhen Orlov <yevhen.orlov@xxxxxxxxxxx>
---
.../marvell/prestera/prestera_router_hw.c | 23 +++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c
index b5407bb88d51..407f465f7562 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c
@@ -57,6 +57,7 @@ static int prestera_nexthop_group_set(struct prestera_switch *sw,
static bool
prestera_nexthop_group_util_hw_state(struct prestera_switch *sw,
struct prestera_nexthop_group *nh_grp);
+static void prestera_fib_node_destroy_ht(struct prestera_switch *sw);

/* TODO: move to router.h as macros */
static bool prestera_nh_neigh_key_is_valid(struct prestera_nh_neigh_key *key)
@@ -98,6 +99,7 @@ int prestera_router_hw_init(struct prestera_switch *sw)

void prestera_router_hw_fini(struct prestera_switch *sw)
{
+ prestera_fib_node_destroy_ht(sw);
WARN_ON(!list_empty(&sw->router->vr_list));
WARN_ON(!list_empty(&sw->router->rif_entry_list));
rhashtable_destroy(&sw->router->fib_ht);
@@ -606,6 +608,27 @@ void prestera_fib_node_destroy(struct prestera_switch *sw,
kfree(fib_node);
}

+static void prestera_fib_node_destroy_ht(struct prestera_switch *sw)
+{
+ struct prestera_fib_node *node;
+ struct rhashtable_iter iter;
+
+ while (1) {
+ rhashtable_walk_enter(&sw->router->fib_ht, &iter);
+ rhashtable_walk_start(&iter);
+ node = rhashtable_walk_next(&iter);
+ rhashtable_walk_stop(&iter);
+ rhashtable_walk_exit(&iter);
+
+ if (!node)
+ break;
+ else if (IS_ERR(node))
+ continue;
+ else if (node)
+ prestera_fib_node_destroy(sw, node);
+ }
+}
+
struct prestera_fib_node *
prestera_fib_node_create(struct prestera_switch *sw,
struct prestera_fib_key *key,
--
2.17.1