netdev - [PATCH net-next 12/14] net/mlx5: Refactor calculation of required completion vectors

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Date:   Sun, 19 Feb 2023 22:14:40 -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>, Eli Cohen <elic@...dia.com>,
        Shay Drory <shayd@...dia.com>
Subject: [PATCH net-next 12/14] net/mlx5: Refactor calculation of required completion vectors

From: Eli Cohen <elic@...dia.com>

Move the calculation to a separate function. We will add more
functionality to it in a follow up patch.

Signed-off-by: Eli Cohen <elic@...dia.com>
Reviewed-by: Shay Drory <shayd@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 28 +++++++++++++-------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 1f68ba60986b..cfbdb822cd73 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -1113,26 +1113,34 @@ void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev)
 #define MLX5_MAX_ASYNC_EQS 3
 #endif
 
-int mlx5_eq_table_create(struct mlx5_core_dev *dev)
+static int get_num_eqs(struct mlx5_core_dev *dev)
 {
 	struct mlx5_eq_table *eq_table = dev->priv.eq_table;
-	int num_eqs = MLX5_CAP_GEN(dev, max_num_eqs) ?
+	int max_dev_eqs;
+	int max_eqs_sf;
+	int num_eqs;
+
+	max_dev_eqs = MLX5_CAP_GEN(dev, max_num_eqs) ?
 		      MLX5_CAP_GEN(dev, max_num_eqs) :
 		      1 << MLX5_CAP_GEN(dev, log_max_eq);
-	int max_eqs_sf;
-	int err;
 
-	eq_table->num_comp_eqs =
-		min_t(int,
-		      mlx5_irq_table_get_num_comp(eq_table->irq_table),
-		      num_eqs - MLX5_MAX_ASYNC_EQS);
+	num_eqs = min_t(int, mlx5_irq_table_get_num_comp(eq_table->irq_table),
+			max_dev_eqs - MLX5_MAX_ASYNC_EQS);
 	if (mlx5_core_is_sf(dev)) {
 		max_eqs_sf = min_t(int, MLX5_COMP_EQS_PER_SF,
 				   mlx5_irq_table_get_sfs_vec(eq_table->irq_table));
-		eq_table->num_comp_eqs = min_t(int, eq_table->num_comp_eqs,
-					       max_eqs_sf);
+		num_eqs = min_t(int, num_eqs, max_eqs_sf);
 	}
 
+	return num_eqs;
+}
+
+int mlx5_eq_table_create(struct mlx5_core_dev *dev)
+{
+	struct mlx5_eq_table *eq_table = dev->priv.eq_table;
+	int err;
+
+	eq_table->num_comp_eqs = get_num_eqs(dev);
 	err = create_async_eqs(dev);
 	if (err) {
 		mlx5_core_err(dev, "Failed to create async EQs\n");
-- 
2.39.1