net/mlx5: Update last-use statistics for flow rules

Set lastuse statistic, when number of packets is changed compared to
last query. This was wrongly dropped when bulk counter reading was added.

Fixes: a351a1b03bf1 ('net/mlx5: Introduce bulk reading of flow counters')
Signed-off-by: Amir Vadai <amirva@mellanox.com>
Reported-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c
index c2877e9de8a1..3a9195b4169d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c
@@ -126,12 +126,21 @@ static struct rb_node *mlx5_fc_stats_query(struct mlx5_core_dev *dev,
         for (node = &first->node; node; node = rb_next(node)) {
                 struct mlx5_fc *counter = rb_entry(node, struct mlx5_fc, node);
                 struct mlx5_fc_cache *c = &counter->cache;
+                u64 packets;
+                u64 bytes;
 
                 if (counter->id > last_id)
                         break;
 
                 mlx5_cmd_fc_bulk_get(dev, b,
-                                     counter->id, &c->packets, &c->bytes);
+                                     counter->id, &packets, &bytes);
+
+                if (c->packets == packets)
+                        continue;
+
+                c->packets = packets;
+                c->bytes = bytes;
+                c->lastuse = jiffies;
         }
 
 out: