netdev - [net-next 08/14] net/mlx5: DR, In rehash write the line in the entry immediately

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Date:   Mon, 24 Oct 2022 14:57:28 +0100
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Yevgeny Kliteynik <kliteyn@...dia.com>,
        Erez Shitrit <erezsh@...dia.com>,
        Alex Vesker <valex@...dia.com>
Subject: [net-next 08/14] net/mlx5: DR, In rehash write the line in the entry immediately

From: Yevgeny Kliteynik <kliteyn@...dia.com>

Don't wait for the whole table to be ready - write each row immediately.
This way we save allocations of the ste_send_info structure and improve
performance.

Signed-off-by: Erez Shitrit <erezsh@...dia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Alex Vesker <valex@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/steering/dr_rule.c   | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
index cd90f0a02434..b739bafcaa6c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
@@ -357,6 +357,15 @@ static int dr_rule_rehash_copy_htbl(struct mlx5dr_matcher *matcher,
 						    update_list);
 		if (err)
 			goto clean_copy;
+
+		/* In order to decrease the number of allocated ste_send_info
+		 * structs, send the current table row now.
+		 */
+		err = dr_rule_send_update_list(update_list, matcher->tbl->dmn, false);
+		if (err) {
+			mlx5dr_dbg(matcher->tbl->dmn, "Failed updating table to HW\n");
+			goto clean_copy;
+		}
 	}
 
 clean_copy:
-- 
2.37.3