[PATCH net-next v2 10/10] mlx4: Delete custom device management logic
From: Petr Pavlu
Date: Sun Aug 13 2023 - 10:52:27 EST
After the conversion to use the auxiliary bus, the custom device
management is not needed anymore and can be deleted.
Signed-off-by: Petr Pavlu <petr.pavlu@xxxxxxxx>
Tested-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Acked-by: Tariq Toukan <tariqt@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/intf.c | 125 ----------------------
drivers/net/ethernet/mellanox/mlx4/main.c | 28 -----
drivers/net/ethernet/mellanox/mlx4/mlx4.h | 3 -
include/linux/mlx4/driver.h | 10 --
4 files changed, 166 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
index 16b2c99ff737..c7697ee0dd05 100644
--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
+++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
@@ -38,15 +38,6 @@
#include "mlx4.h"
-struct mlx4_device_context {
- struct list_head list;
- struct list_head bond_list;
- struct mlx4_interface *intf;
- void *context;
-};
-
-static LIST_HEAD(intf_list);
-static LIST_HEAD(dev_list);
static DEFINE_MUTEX(intf_mutex);
static DEFINE_IDA(mlx4_adev_ida);
@@ -156,77 +147,6 @@ static void del_adev(struct auxiliary_device *adev)
auxiliary_device_uninit(adev);
}
-static void mlx4_add_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
-{
- struct mlx4_device_context *dev_ctx;
-
- dev_ctx = kmalloc(sizeof(*dev_ctx), GFP_KERNEL);
- if (!dev_ctx)
- return;
-
- dev_ctx->intf = intf;
- dev_ctx->context = intf->add(&priv->dev);
-
- if (dev_ctx->context) {
- spin_lock_irq(&priv->ctx_lock);
- list_add_tail(&dev_ctx->list, &priv->ctx_list);
- spin_unlock_irq(&priv->ctx_lock);
- } else
- kfree(dev_ctx);
-
-}
-
-static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
-{
- struct mlx4_device_context *dev_ctx;
-
- list_for_each_entry(dev_ctx, &priv->ctx_list, list)
- if (dev_ctx->intf == intf) {
- spin_lock_irq(&priv->ctx_lock);
- list_del(&dev_ctx->list);
- spin_unlock_irq(&priv->ctx_lock);
-
- intf->remove(&priv->dev, dev_ctx->context);
- kfree(dev_ctx);
- return;
- }
-}
-
-int mlx4_register_interface(struct mlx4_interface *intf)
-{
- struct mlx4_priv *priv;
-
- if (!intf->add || !intf->remove)
- return -EINVAL;
-
- mutex_lock(&intf_mutex);
-
- list_add_tail(&intf->list, &intf_list);
- list_for_each_entry(priv, &dev_list, dev_list) {
- mlx4_add_device(intf, priv);
- }
-
- mutex_unlock(&intf_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(mlx4_register_interface);
-
-void mlx4_unregister_interface(struct mlx4_interface *intf)
-{
- struct mlx4_priv *priv;
-
- mutex_lock(&intf_mutex);
-
- list_for_each_entry(priv, &dev_list, dev_list)
- mlx4_remove_device(intf, priv);
-
- list_del(&intf->list);
-
- mutex_unlock(&intf_mutex);
-}
-EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
-
int mlx4_register_auxiliary_driver(struct mlx4_adrv *madrv)
{
return auxiliary_driver_register(&madrv->adrv);
@@ -242,10 +162,7 @@ EXPORT_SYMBOL_GPL(mlx4_unregister_auxiliary_driver);
int mlx4_do_bond(struct mlx4_dev *dev, bool enable)
{
struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_device_context *dev_ctx = NULL, *temp_dev_ctx;
- unsigned long flags;
int i, ret;
- LIST_HEAD(bond_list);
if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
return -EOPNOTSUPP;
@@ -267,36 +184,6 @@ int mlx4_do_bond(struct mlx4_dev *dev, bool enable)
dev->flags &= ~MLX4_FLAG_BONDED;
}
- spin_lock_irqsave(&priv->ctx_lock, flags);
- list_for_each_entry_safe(dev_ctx, temp_dev_ctx, &priv->ctx_list, list) {
- if (!(dev_ctx->intf->flags & MLX4_INTFF_BONDING))
- continue;
-
- if (mlx4_is_mfunc(dev)) {
- mlx4_dbg(dev,
- "SRIOV, disabled HA mode for intf proto %d\n",
- dev_ctx->intf->protocol);
- continue;
- }
-
- list_add_tail(&dev_ctx->bond_list, &bond_list);
- list_del(&dev_ctx->list);
- }
- spin_unlock_irqrestore(&priv->ctx_lock, flags);
-
- list_for_each_entry(dev_ctx, &bond_list, bond_list) {
- dev_ctx->intf->remove(dev, dev_ctx->context);
- dev_ctx->context = dev_ctx->intf->add(dev);
-
- spin_lock_irqsave(&priv->ctx_lock, flags);
- list_add_tail(&dev_ctx->list, &priv->ctx_list);
- spin_unlock_irqrestore(&priv->ctx_lock, flags);
-
- mlx4_dbg(dev, "Interface for protocol %d restarted with bonded mode %s\n",
- dev_ctx->intf->protocol, enable ?
- "enabled" : "disabled");
- }
-
mutex_lock(&intf_mutex);
for (i = 0; i < ARRAY_SIZE(mlx4_adev_devices); i++) {
@@ -447,16 +334,11 @@ static int rescan_drivers_locked(struct mlx4_dev *dev)
int mlx4_register_device(struct mlx4_dev *dev)
{
- struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_interface *intf;
int ret;
mutex_lock(&intf_mutex);
dev->persist->interface_state |= MLX4_INTERFACE_STATE_UP;
- list_add_tail(&priv->dev_list, &dev_list);
- list_for_each_entry(intf, &intf_list, list)
- mlx4_add_device(intf, priv);
ret = rescan_drivers_locked(dev);
@@ -474,9 +356,6 @@ int mlx4_register_device(struct mlx4_dev *dev)
void mlx4_unregister_device(struct mlx4_dev *dev)
{
- struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_interface *intf;
-
if (!(dev->persist->interface_state & MLX4_INTERFACE_STATE_UP))
return;
@@ -495,10 +374,6 @@ void mlx4_unregister_device(struct mlx4_dev *dev)
}
mutex_lock(&intf_mutex);
- list_for_each_entry(intf, &intf_list, list)
- mlx4_remove_device(intf, priv);
-
- list_del(&priv->dev_list);
dev->persist->interface_state &= ~MLX4_INTERFACE_STATE_UP;
rescan_drivers_locked(dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index c4ec7377aa71..2581226836b5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -42,7 +42,6 @@
#include <linux/slab.h>
#include <linux/io-mapping.h>
#include <linux/delay.h>
-#include <linux/kmod.h>
#include <linux/etherdevice.h>
#include <net/devlink.h>
@@ -1091,27 +1090,6 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
return err;
}
-static void mlx4_request_modules(struct mlx4_dev *dev)
-{
- int port;
- int has_ib_port = false;
- int has_eth_port = false;
-#define EN_DRV_NAME "mlx4_en"
-#define IB_DRV_NAME "mlx4_ib"
-
- for (port = 1; port <= dev->caps.num_ports; port++) {
- if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
- has_ib_port = true;
- else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
- has_eth_port = true;
- }
-
- if (has_eth_port)
- request_module_nowait(EN_DRV_NAME);
- if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
- request_module_nowait(IB_DRV_NAME);
-}
-
/*
* Change the port configuration of the device.
* Every user of this function must hold the port mutex.
@@ -1147,7 +1125,6 @@ int mlx4_change_port_types(struct mlx4_dev *dev,
mlx4_err(dev, "Failed to register device\n");
goto out;
}
- mlx4_request_modules(dev);
}
out:
@@ -3426,9 +3403,6 @@ static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
devl_assert_locked(devlink);
dev = &priv->dev;
- INIT_LIST_HEAD(&priv->ctx_list);
- spin_lock_init(&priv->ctx_lock);
-
err = mlx4_adev_init(dev);
if (err)
return err;
@@ -3732,8 +3706,6 @@ static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
if (err)
goto err_port;
- mlx4_request_modules(dev);
-
mlx4_sense_init(dev);
mlx4_start_sense(dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index d5050bfb342f..d707b790536f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -882,9 +882,6 @@ enum {
struct mlx4_priv {
struct mlx4_dev dev;
- struct list_head dev_list;
- struct list_head ctx_list;
- spinlock_t ctx_lock;
struct mlx4_adev **adev;
int adev_idx;
struct atomic_notifier_head event_nh;
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
index 9cf157d381c6..69825223081f 100644
--- a/include/linux/mlx4/driver.h
+++ b/include/linux/mlx4/driver.h
@@ -58,22 +58,12 @@ enum {
MLX4_INTFF_BONDING = 1 << 0
};
-struct mlx4_interface {
- void * (*add) (struct mlx4_dev *dev);
- void (*remove)(struct mlx4_dev *dev, void *context);
- struct list_head list;
- enum mlx4_protocol protocol;
- int flags;
-};
-
struct mlx4_adrv {
struct auxiliary_driver adrv;
enum mlx4_protocol protocol;
int flags;
};
-int mlx4_register_interface(struct mlx4_interface *intf);
-void mlx4_unregister_interface(struct mlx4_interface *intf);
int mlx4_register_auxiliary_driver(struct mlx4_adrv *madrv);
void mlx4_unregister_auxiliary_driver(struct mlx4_adrv *madrv);
--
2.35.3