netdev - [net-next V2 11/15] net/mlx5e: Refactor mlx5e_rss_set_rxfh() and mlx5e_rss_get

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Date: Thu, 12 Oct 2023 12:27:46 -0700
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>,
	Adham Faris <afaris@...dia.com>
Subject: [net-next V2 11/15] net/mlx5e: Refactor mlx5e_rss_set_rxfh() and mlx5e_rss_get_rxfh()

From: Adham Faris <afaris@...dia.com>

Initialize indirect table array with memcpy rather than for loop.
This change has made for two reasons:
1) To be consistent with the indirect table array init in
   mlx5e_rss_set_rxfh().
2) In general, prefer to use memcpy for array initializing rather than
   for loop.

Signed-off-by: Adham Faris <afaris@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/rss.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rss.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rss.c
index 7f93426b88b3..fd52541e5508 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rss.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rss.c
@@ -470,11 +470,9 @@ int mlx5e_rss_packet_merge_set_param(struct mlx5e_rss *rss,
 
 int mlx5e_rss_get_rxfh(struct mlx5e_rss *rss, u32 *indir, u8 *key, u8 *hfunc)
 {
-	unsigned int i;
-
 	if (indir)
-		for (i = 0; i < MLX5E_INDIR_RQT_SIZE; i++)
-			indir[i] = rss->indir.table[i];
+		memcpy(indir, rss->indir.table,
+		       MLX5E_INDIR_RQT_SIZE * sizeof(*rss->indir.table));
 
 	if (key)
 		memcpy(key, rss->hash.toeplitz_hash_key,
@@ -523,12 +521,10 @@ int mlx5e_rss_set_rxfh(struct mlx5e_rss *rss, const u32 *indir,
 	}
 
 	if (indir) {
-		unsigned int i;
-
 		changed_indir = true;
 
-		for (i = 0; i < MLX5E_INDIR_RQT_SIZE; i++)
-			rss->indir.table[i] = indir[i];
+		memcpy(rss->indir.table, indir,
+		       MLX5E_INDIR_RQT_SIZE * sizeof(*rss->indir.table));
 	}
 
 	if (changed_indir && rss->enabled) {
-- 
2.41.0