[patch net-next 5/9] mlxsw: spectrum: Add support for direct rule access

[Jiri Pirko]

From: Arkadi Sharshevsky <arka...@mellanox.com>

Currently the ACL rules can be accessed only by hashing. In order to
dump the activity the rules are also placed in a list.

Signed-off-by: Arkadi Sharshevsky <arka...@mellanox.com>
Reviewed-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index 3c5ea7e..1888092 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -54,6 +54,7 @@ struct mlxsw_sp_acl {
        struct mlxsw_afa *afa;
        const struct mlxsw_sp_acl_ops *ops;
        struct rhashtable ruleset_ht;
+       struct list_head rules;
        unsigned long priv[0];
        /* priv has to be always the last item */
 };
@@ -80,6 +81,7 @@ struct mlxsw_sp_acl_ruleset {
 
 struct mlxsw_sp_acl_rule {
        struct rhash_head ht_node; /* Member of rule HT */
+       struct list_head list;
        unsigned long cookie; /* HT key */
        struct mlxsw_sp_acl_ruleset *ruleset;
        struct mlxsw_sp_acl_rule_info *rulei;
@@ -422,6 +424,7 @@ int mlxsw_sp_acl_rule_add(struct mlxsw_sp *mlxsw_sp,
        if (err)
                goto err_rhashtable_insert;
 
+       list_add_tail(&rule->list, &mlxsw_sp->acl->rules);
        return 0;
 
 err_rhashtable_insert:
@@ -435,6 +438,7 @@ void mlxsw_sp_acl_rule_del(struct mlxsw_sp *mlxsw_sp,
        struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
        const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 
+       list_del(&rule->list);
        rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
                               mlxsw_sp_acl_rule_ht_params);
        ops->rule_del(mlxsw_sp, rule->priv);
@@ -570,6 +574,7 @@ int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp)
        if (err)
                goto err_rhashtable_init;
 
+       INIT_LIST_HEAD(&acl->rules);
        err = acl_ops->init(mlxsw_sp, acl->priv);
        if (err)
                goto err_acl_ops_init;
@@ -594,6 +599,7 @@ void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp)
        const struct mlxsw_sp_acl_ops *acl_ops = acl->ops;
 
        acl_ops->fini(mlxsw_sp, acl->priv);
+       WARN_ON(!list_empty(&acl->rules));
        rhashtable_destroy(&acl->ruleset_ht);
        mlxsw_afa_destroy(acl->afa);
        mlxsw_afk_destroy(acl->afk);
-- 
2.7.4