diff mbox series

[net-next,v2,10/12] mlxsw: spectrum_acl: Ask device for rule stats only if counter was created

Message ID 20200228172505.14386-11-jiri@resnulli.us
State Changes Requested
Delegated to: David Miller
Headers show
Series net: allow user specify TC action HW stats type | expand

Commit Message

Jiri Pirko Feb. 28, 2020, 5:25 p.m. UTC 
From: Jiri Pirko <jiri@mellanox.com>

Set a flag in case rule counter was created. Only query the device for
stats of a rule, which has the valid counter assigned.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
v1->v2:
- new patch
---
 .../net/ethernet/mellanox/mlxsw/spectrum.h    |  3 ++-
 .../ethernet/mellanox/mlxsw/spectrum_acl.c    | 25 +++++++++++++------
 2 files changed, 19 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 9708156e7871..ea712e6fa390 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -641,7 +641,8 @@  struct mlxsw_sp_acl_rule_info {
 	struct mlxsw_afa_block *act_block;
 	u8 action_created:1,
 	   ingress_bind_blocker:1,
-	   egress_bind_blocker:1;
+	   egress_bind_blocker:1,
+	   counter_valid:1;
 	unsigned int counter_index;
 };
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index 36b264798f04..889330ac39dc 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -642,8 +642,14 @@  int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp,
 				 struct mlxsw_sp_acl_rule_info *rulei,
 				 struct netlink_ext_ack *extack)
 {
-	return mlxsw_afa_block_append_counter(rulei->act_block,
-					      &rulei->counter_index, extack);
+	int err;
+
+	err = mlxsw_afa_block_append_counter(rulei->act_block,
+					     &rulei->counter_index, extack);
+	if (err)
+		return err;
+	rulei->counter_valid = true;
+	return 0;
 }
 
 int mlxsw_sp_acl_rulei_act_fid_set(struct mlxsw_sp *mlxsw_sp,
@@ -862,13 +868,16 @@  int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp,
 	int err;
 
 	rulei = mlxsw_sp_acl_rule_rulei(rule);
-	err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
-					&current_packets, &current_bytes);
-	if (err)
-		return err;
+	if (rulei->counter_valid) {
+		err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
+						&current_packets,
+						&current_bytes);
+		if (err)
+			return err;
 
-	*packets = current_packets - rule->last_packets;
-	*bytes = current_bytes - rule->last_bytes;
+		*packets = current_packets - rule->last_packets;
+		*bytes = current_bytes - rule->last_bytes;
+	}
 	*last_use = rule->last_used;
 
 	rule->last_bytes = current_bytes;