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Message-ID: <20200107191335.12272-7-saeedm@mellanox.com>
Date:   Tue, 7 Jan 2020 19:14:15 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Parav Pandit <parav@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 06/13] net/mlx5: Use async EQ setup cleanup helpers for
 multiple EQs

From: Parav Pandit <parav@...lanox.com>

Use helper routines to setup and teardown multiple EQs and reuse the
code in setup, cleanup and error unwinding flows.

Signed-off-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 114 ++++++++-----------
 1 file changed, 49 insertions(+), 65 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 2c716abc0f27..cccea3a8eddd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -564,6 +564,39 @@ static void gather_async_events_mask(struct mlx5_core_dev *dev, u64 mask[4])
 		gather_user_async_events(dev, mask);
 }
 
+static int
+setup_async_eq(struct mlx5_core_dev *dev, struct mlx5_eq_async *eq,
+	       struct mlx5_eq_param *param, const char *name)
+{
+	int err;
+
+	eq->irq_nb.notifier_call = mlx5_eq_async_int;
+
+	err = create_async_eq(dev, &eq->core, param);
+	if (err) {
+		mlx5_core_warn(dev, "failed to create %s EQ %d\n", name, err);
+		return err;
+	}
+	err = mlx5_eq_enable(dev, &eq->core, &eq->irq_nb);
+	if (err) {
+		mlx5_core_warn(dev, "failed to enable %s EQ %d\n", name, err);
+		destroy_async_eq(dev, &eq->core);
+	}
+	return err;
+}
+
+static void cleanup_async_eq(struct mlx5_core_dev *dev,
+			     struct mlx5_eq_async *eq, const char *name)
+{
+	int err;
+
+	mlx5_eq_disable(dev, &eq->core, &eq->irq_nb);
+	err = destroy_async_eq(dev, &eq->core);
+	if (err)
+		mlx5_core_err(dev, "failed to destroy %s eq, err(%d)\n",
+			      name, err);
+}
+
 static int create_async_eqs(struct mlx5_core_dev *dev)
 {
 	struct mlx5_eq_table *table = dev->priv.eq_table;
@@ -573,77 +606,45 @@ static int create_async_eqs(struct mlx5_core_dev *dev)
 	MLX5_NB_INIT(&table->cq_err_nb, cq_err_event_notifier, CQ_ERROR);
 	mlx5_eq_notifier_register(dev, &table->cq_err_nb);
 
-	table->cmd_eq.irq_nb.notifier_call = mlx5_eq_async_int;
 	param = (struct mlx5_eq_param) {
 		.irq_index = 0,
 		.nent = MLX5_NUM_CMD_EQE,
+		.mask[0] = 1ull << MLX5_EVENT_TYPE_CMD,
 	};
-
-	param.mask[0] = 1ull << MLX5_EVENT_TYPE_CMD;
-	err = create_async_eq(dev, &table->cmd_eq.core, &param);
-	if (err) {
-		mlx5_core_warn(dev, "failed to create cmd EQ %d\n", err);
-		goto err0;
-	}
-	err = mlx5_eq_enable(dev, &table->cmd_eq.core, &table->cmd_eq.irq_nb);
-	if (err) {
-		mlx5_core_warn(dev, "failed to enable cmd EQ %d\n", err);
+	err = setup_async_eq(dev, &table->cmd_eq, &param, "cmd");
+	if (err)
 		goto err1;
-	}
+
 	mlx5_cmd_use_events(dev);
 
-	table->async_eq.irq_nb.notifier_call = mlx5_eq_async_int;
 	param = (struct mlx5_eq_param) {
 		.irq_index = 0,
 		.nent = MLX5_NUM_ASYNC_EQE,
 	};
 
 	gather_async_events_mask(dev, param.mask);
-	err = create_async_eq(dev, &table->async_eq.core, &param);
-	if (err) {
-		mlx5_core_warn(dev, "failed to create async EQ %d\n", err);
+	err = setup_async_eq(dev, &table->async_eq, &param, "async");
+	if (err)
 		goto err2;
-	}
-	err = mlx5_eq_enable(dev, &table->async_eq.core,
-			     &table->async_eq.irq_nb);
-	if (err) {
-		mlx5_core_warn(dev, "failed to enable async EQ %d\n", err);
-		goto err3;
-	}
 
-	table->pages_eq.irq_nb.notifier_call = mlx5_eq_async_int;
 	param = (struct mlx5_eq_param) {
 		.irq_index = 0,
 		.nent = /* TODO: sriov max_vf + */ 1,
+		.mask[0] = 1ull << MLX5_EVENT_TYPE_PAGE_REQUEST,
 	};
 
-	param.mask[0] = 1ull << MLX5_EVENT_TYPE_PAGE_REQUEST;
-	err = create_async_eq(dev, &table->pages_eq.core, &param);
-	if (err) {
-		mlx5_core_warn(dev, "failed to create pages EQ %d\n", err);
-		goto err4;
-	}
-	err = mlx5_eq_enable(dev, &table->pages_eq.core,
-			     &table->pages_eq.irq_nb);
-	if (err) {
-		mlx5_core_warn(dev, "failed to enable pages EQ %d\n", err);
-		goto err5;
-	}
+	err = setup_async_eq(dev, &table->pages_eq, &param, "pages");
+	if (err)
+		goto err3;
 
-	return err;
+	return 0;
 
-err5:
-	destroy_async_eq(dev, &table->pages_eq.core);
-err4:
-	mlx5_eq_disable(dev, &table->async_eq.core, &table->async_eq.irq_nb);
 err3:
-	destroy_async_eq(dev, &table->async_eq.core);
+	cleanup_async_eq(dev, &table->async_eq, "async");
 err2:
 	mlx5_cmd_use_polling(dev);
-	mlx5_eq_disable(dev, &table->cmd_eq.core, &table->cmd_eq.irq_nb);
+	cleanup_async_eq(dev, &table->cmd_eq, "cmd");
 err1:
-	destroy_async_eq(dev, &table->cmd_eq.core);
-err0:
 	mlx5_eq_notifier_unregister(dev, &table->cq_err_nb);
 	return err;
 }
@@ -651,28 +652,11 @@ static int create_async_eqs(struct mlx5_core_dev *dev)
 static void destroy_async_eqs(struct mlx5_core_dev *dev)
 {
 	struct mlx5_eq_table *table = dev->priv.eq_table;
-	int err;
-
-	mlx5_eq_disable(dev, &table->pages_eq.core, &table->pages_eq.irq_nb);
-	err = destroy_async_eq(dev, &table->pages_eq.core);
-	if (err)
-		mlx5_core_err(dev, "failed to destroy pages eq, err(%d)\n",
-			      err);
-
-	mlx5_eq_disable(dev, &table->async_eq.core, &table->async_eq.irq_nb);
-	err = destroy_async_eq(dev, &table->async_eq.core);
-	if (err)
-		mlx5_core_err(dev, "failed to destroy async eq, err(%d)\n",
-			      err);
 
+	cleanup_async_eq(dev, &table->pages_eq, "pages");
+	cleanup_async_eq(dev, &table->async_eq, "async");
 	mlx5_cmd_use_polling(dev);
-
-	mlx5_eq_disable(dev, &table->cmd_eq.core, &table->cmd_eq.irq_nb);
-	err = destroy_async_eq(dev, &table->cmd_eq.core);
-	if (err)
-		mlx5_core_err(dev, "failed to destroy command eq, err(%d)\n",
-			      err);
-
+	cleanup_async_eq(dev, &table->cmd_eq, "cmd");
 	mlx5_eq_notifier_unregister(dev, &table->cq_err_nb);
 }
 
-- 
2.24.1

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