netdev - [net-next 14/15] net/mlx5e: Remove redundant allocation of spec in create indirect fwd group

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Date:   Wed, 18 Jan 2023 10:36:01 -0800
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>,
        Maor Dickman <maord@...dia.com>, Roi Dayan <roid@...dia.com>
Subject: [net-next 14/15] net/mlx5e: Remove redundant allocation of spec in create indirect fwd group

From: Maor Dickman <maord@...dia.com>

mlx5_add_flow_rules supports creating rules without any matches by passing NULL
pointer instead of spec, if NULL is passed it will use a static empty spec.
This make allocation of spec in mlx5_create_indir_fwd_group unnecessary.

Remove the redundant allocation.

Signed-off-by: Maor Dickman <maord@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/esw/indir_table.c  | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.c
index 8a94870c5b43..9959e9fd15a1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/indir_table.c
@@ -212,19 +212,12 @@ static int mlx5_create_indir_fwd_group(struct mlx5_eswitch *esw,
 	int err = 0, inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
 	struct mlx5_flow_destination dest = {};
 	struct mlx5_flow_act flow_act = {};
-	struct mlx5_flow_spec *spec;
 	u32 *in;
 
 	in = kvzalloc(inlen, GFP_KERNEL);
 	if (!in)
 		return -ENOMEM;
 
-	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!spec) {
-		kvfree(in);
-		return -ENOMEM;
-	}
-
 	/* Hold one entry */
 	MLX5_SET(create_flow_group_in, in, start_flow_index, MLX5_ESW_INDIR_TABLE_FWD_IDX);
 	MLX5_SET(create_flow_group_in, in, end_flow_index, MLX5_ESW_INDIR_TABLE_FWD_IDX);
@@ -240,14 +233,13 @@ static int mlx5_create_indir_fwd_group(struct mlx5_eswitch *esw,
 	dest.vport.num = e->vport;
 	dest.vport.vhca_id = MLX5_CAP_GEN(esw->dev, vhca_id);
 	dest.vport.flags = MLX5_FLOW_DEST_VPORT_VHCA_ID;
-	e->fwd_rule = mlx5_add_flow_rules(e->ft, spec, &flow_act, &dest, 1);
+	e->fwd_rule = mlx5_add_flow_rules(e->ft, NULL, &flow_act, &dest, 1);
 	if (IS_ERR(e->fwd_rule)) {
 		mlx5_destroy_flow_group(e->fwd_grp);
 		err = PTR_ERR(e->fwd_rule);
 	}
 
 err_out:
-	kvfree(spec);
 	kvfree(in);
 	return err;
 }
-- 
2.39.0