netdev - [net-next 02/16] net/mlx5e: Skip redundant checks when providing NUD lastuse feedback

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Date:   Mon, 14 May 2018 15:19:20 -0700
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Roi Dayan <roid@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 02/16] net/mlx5e: Skip redundant checks when providing NUD lastuse feedback

From: Roi Dayan <roid@...lanox.com>

It's redundant to continue the loop if we found one flow whose lastuse value
being newer than the last one we reported, since this is enough for us to
trigger a NUD update (neigh_event_send()).

Signed-off-by: Roi Dayan <roid@...lanox.com>
Reviewed-by: Paul Blakey <paulb@...lanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index b94276db3ce9..9b0e3ccffa66 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -982,6 +982,8 @@ void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
 				}
 			}
 		}
+		if (neigh_used)
+			break;
 	}
 
 	if (neigh_used) {
-- 
2.17.0