mlxsw: spectrum: Add support for counters on TCAM entries

Add support for packets and byte statistics on TCAM entries. The counters
are allocated from the generic flow counters pool.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index d2f6cbb6a0c6..87d011171da9 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -247,6 +247,27 @@ void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp,
 	mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
 }
 
+static int
+mlxsw_sp_acl_rulei_counter_alloc(struct mlxsw_sp *mlxsw_sp,
+				 struct mlxsw_sp_acl_rule_info *rulei)
+{
+	int err;
+
+	err = mlxsw_sp_flow_counter_alloc(mlxsw_sp, &rulei->counter_index);
+	if (err)
+		return err;
+	rulei->counter_valid = true;
+	return 0;
+}
+
+static void
+mlxsw_sp_acl_rulei_counter_free(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_acl_rule_info *rulei)
+{
+	rulei->counter_valid = false;
+	mlxsw_sp_flow_counter_free(mlxsw_sp, rulei->counter_index);
+}
+
 struct mlxsw_sp_acl_rule_info *
 mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl)
 {
@@ -373,6 +394,13 @@ int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
 	}
 }
 
+int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp,
+				 struct mlxsw_sp_acl_rule_info *rulei)
+{
+	return mlxsw_afa_block_append_counter(rulei->act_block,
+					      rulei->counter_index);
+}
+
 struct mlxsw_sp_acl_rule *
 mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
 			 struct mlxsw_sp_acl_ruleset *ruleset,
@@ -396,8 +424,14 @@ mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
 		err = PTR_ERR(rule->rulei);
 		goto err_rulei_create;
 	}
+
+	err = mlxsw_sp_acl_rulei_counter_alloc(mlxsw_sp, rule->rulei);
+	if (err)
+		goto err_counter_alloc;
 	return rule;
 
+err_counter_alloc:
+	mlxsw_sp_acl_rulei_destroy(rule->rulei);
 err_rulei_create:
 	kfree(rule);
 err_alloc:
@@ -410,6 +444,7 @@ void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp,
 {
 	struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 
+	mlxsw_sp_acl_rulei_counter_free(mlxsw_sp, rule->rulei);
 	mlxsw_sp_acl_rulei_destroy(rule->rulei);
 	kfree(rule);
 	mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);