switchdev: Remove unused transaction item queue
There are no more in tree users of the
switchdev_trans_item_{dequeue,enqueue} or switchdev_trans_item structure
in the kernel since commit 00fc0c51e35b ("rocker: Change world_ops API
and implementation to be switchdev independant").
Remove this unused code and update the documentation accordingly since.
Signed-off-by: Florian Fainelli <[email protected]>
Acked-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index d81cfce..90ba4a1 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -23,78 +23,6 @@
#include <linux/rtnetlink.h>
#include <net/switchdev.h>
-/**
- * switchdev_trans_item_enqueue - Enqueue data item to transaction queue
- *
- * @trans: transaction
- * @data: pointer to data being queued
- * @destructor: data destructor
- * @tritem: transaction item being queued
- *
- * Enqeueue data item to transaction queue. tritem is typically placed in
- * cointainter pointed at by data pointer. Destructor is called on
- * transaction abort and after successful commit phase in case
- * the caller did not dequeue the item before.
- */
-void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
- void *data, void (*destructor)(void const *),
- struct switchdev_trans_item *tritem)
-{
- tritem->data = data;
- tritem->destructor = destructor;
- list_add_tail(&tritem->list, &trans->item_list);
-}
-EXPORT_SYMBOL_GPL(switchdev_trans_item_enqueue);
-
-static struct switchdev_trans_item *
-__switchdev_trans_item_dequeue(struct switchdev_trans *trans)
-{
- struct switchdev_trans_item *tritem;
-
- if (list_empty(&trans->item_list))
- return NULL;
- tritem = list_first_entry(&trans->item_list,
- struct switchdev_trans_item, list);
- list_del(&tritem->list);
- return tritem;
-}
-
-/**
- * switchdev_trans_item_dequeue - Dequeue data item from transaction queue
- *
- * @trans: transaction
- */
-void *switchdev_trans_item_dequeue(struct switchdev_trans *trans)
-{
- struct switchdev_trans_item *tritem;
-
- tritem = __switchdev_trans_item_dequeue(trans);
- BUG_ON(!tritem);
- return tritem->data;
-}
-EXPORT_SYMBOL_GPL(switchdev_trans_item_dequeue);
-
-static void switchdev_trans_init(struct switchdev_trans *trans)
-{
- INIT_LIST_HEAD(&trans->item_list);
-}
-
-static void switchdev_trans_items_destroy(struct switchdev_trans *trans)
-{
- struct switchdev_trans_item *tritem;
-
- while ((tritem = __switchdev_trans_item_dequeue(trans)))
- tritem->destructor(tritem->data);
-}
-
-static void switchdev_trans_items_warn_destroy(struct net_device *dev,
- struct switchdev_trans *trans)
-{
- WARN(!list_empty(&trans->item_list), "%s: transaction item queue is not empty.\n",
- dev->name);
- switchdev_trans_items_destroy(trans);
-}
-
static LIST_HEAD(deferred);
static DEFINE_SPINLOCK(deferred_lock);
@@ -208,8 +136,6 @@ static int switchdev_port_attr_set_now(struct net_device *dev,
struct switchdev_trans trans;
int err;
- switchdev_trans_init(&trans);
-
/* Phase I: prepare for attr set. Driver/device should fail
* here if there are going to be issues in the commit phase,
* such as lack of resources or support. The driver/device
@@ -220,17 +146,8 @@ static int switchdev_port_attr_set_now(struct net_device *dev,
trans.ph_prepare = true;
err = switchdev_port_attr_notify(SWITCHDEV_PORT_ATTR_SET, dev, attr,
&trans);
- if (err) {
- /* Prepare phase failed: abort the transaction. Any
- * resources reserved in the prepare phase are
- * released.
- */
-
- if (err != -EOPNOTSUPP)
- switchdev_trans_items_destroy(&trans);
-
+ if (err)
return err;
- }
/* Phase II: commit attr set. This cannot fail as a fault
* of driver/device. If it does, it's a bug in the driver/device
@@ -242,7 +159,6 @@ static int switchdev_port_attr_set_now(struct net_device *dev,
&trans);
WARN(err, "%s: Commit of attribute (id=%d) failed.\n",
dev->name, attr->id);
- switchdev_trans_items_warn_destroy(dev, &trans);
return err;
}
@@ -341,8 +257,6 @@ static int switchdev_port_obj_add_now(struct net_device *dev,
ASSERT_RTNL();
- switchdev_trans_init(&trans);
-
/* Phase I: prepare for obj add. Driver/device should fail
* here if there are going to be issues in the commit phase,
* such as lack of resources or support. The driver/device
@@ -353,17 +267,8 @@ static int switchdev_port_obj_add_now(struct net_device *dev,
trans.ph_prepare = true;
err = switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD,
dev, obj, &trans, extack);
- if (err) {
- /* Prepare phase failed: abort the transaction. Any
- * resources reserved in the prepare phase are
- * released.
- */
-
- if (err != -EOPNOTSUPP)
- switchdev_trans_items_destroy(&trans);
-
+ if (err)
return err;
- }
/* Phase II: commit obj add. This cannot fail as a fault
* of driver/device. If it does, it's a bug in the driver/device
@@ -374,7 +279,6 @@ static int switchdev_port_obj_add_now(struct net_device *dev,
err = switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD,
dev, obj, &trans, extack);
WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
- switchdev_trans_items_warn_destroy(dev, &trans);
return err;
}
