switchdev: Replace port obj add/del SDO with a notification

Drop switchdev_ops.switchdev_port_obj_add and _del. Drop the uses of this field from all clients, which were migrated to use switchdev notification in the previous patches. Add a new function switchdev_port_obj_notify() that sends the switchdev notifications SWITCHDEV_PORT_OBJ_ADD and _DEL. Update switchdev_port_obj_del_now() to dispatch to this new function. Drop __switchdev_port_obj_add() and update switchdev_port_obj_add() likewise. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
torvalds · Nov 24, 2018 · d17d9f5 · d17d9f5
1 parent 0e332c8
commit d17d9f5
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Showing 7 changed files with 25 additions and 61 deletions.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1968,8 +1968,6 @@ static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
  .switchdev_port_attr_get = mlxsw_sp_port_attr_get,
  .switchdev_port_attr_set = mlxsw_sp_port_attr_set,
- .switchdev_port_obj_add = mlxsw_sp_port_obj_add,
- .switchdev_port_obj_del = mlxsw_sp_port_obj_del,
 };
 
 static int

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
@@ -1337,8 +1337,6 @@ static int ocelot_port_obj_del(struct net_device *dev,
 static const struct switchdev_ops ocelot_port_switchdev_ops = {
  .switchdev_port_attr_get = ocelot_port_attr_get,
  .switchdev_port_attr_set = ocelot_port_attr_set,
- .switchdev_port_obj_add = ocelot_port_obj_add,
- .switchdev_port_obj_del = ocelot_port_obj_del,
 };
 
 static int ocelot_port_bridge_join(struct ocelot_port *ocelot_port,

diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
@@ -2145,8 +2145,6 @@ static int rocker_port_obj_del(struct net_device *dev,
 static const struct switchdev_ops rocker_port_switchdev_ops = {
  .switchdev_port_attr_get = rocker_port_attr_get,
  .switchdev_port_attr_set = rocker_port_attr_set,
- .switchdev_port_obj_add = rocker_port_obj_add,
- .switchdev_port_obj_del = rocker_port_obj_del,
 };
 
 struct rocker_fib_event_work {

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -930,8 +930,6 @@ static int swdev_port_obj_del(struct net_device *netdev,
 static const struct switchdev_ops ethsw_port_switchdev_ops = {
  .switchdev_port_attr_get = swdev_port_attr_get,
  .switchdev_port_attr_set = swdev_port_attr_set,
- .switchdev_port_obj_add = swdev_port_obj_add,
- .switchdev_port_obj_del = swdev_port_obj_del,
 };
 
 /* For the moment, only flood setting needs to be updated */

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
@@ -121,22 +121,13 @@ typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
  * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
  *
  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
- *
- * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
- *
- * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
  */
 struct switchdev_ops {
  int (*switchdev_port_attr_get)(struct net_device *dev,
  struct switchdev_attr *attr);
  int (*switchdev_port_attr_set)(struct net_device *dev,
  const struct switchdev_attr *attr,
  struct switchdev_trans *trans);
- int (*switchdev_port_obj_add)(struct net_device *dev,
- const struct switchdev_obj *obj,
- struct switchdev_trans *trans);
- int (*switchdev_port_obj_del)(struct net_device *dev,
- const struct switchdev_obj *obj);
 };
 
 enum switchdev_notifier_type {

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
@@ -1050,8 +1050,6 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
 static const struct switchdev_ops dsa_slave_switchdev_ops = {
  .switchdev_port_attr_get = dsa_slave_port_attr_get,
  .switchdev_port_attr_set = dsa_slave_port_attr_set,
- .switchdev_port_obj_add = dsa_slave_port_obj_add,
- .switchdev_port_obj_del = dsa_slave_port_obj_del,
 };
 
 static struct device_type dsa_type = {

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
@@ -353,30 +353,29 @@ static size_t switchdev_obj_size(const struct switchdev_obj *obj)
  return 0;
 }
 
-static int __switchdev_port_obj_add(struct net_device *dev,
- const struct switchdev_obj *obj,
- struct switchdev_trans *trans)
+static int switchdev_port_obj_notify(enum switchdev_notifier_type nt,
+ struct net_device *dev,
+ const struct switchdev_obj *obj,
+ struct switchdev_trans *trans)
 {
- const struct switchdev_ops *ops = dev->switchdev_ops;
- struct net_device *lower_dev;
- struct list_head *iter;
- int err = -EOPNOTSUPP;
-
- if (ops && ops->switchdev_port_obj_add)
- return ops->switchdev_port_obj_add(dev, obj, trans);
+ int rc;
+ int err;
 
- /* Switch device port(s) may be stacked under
- * bond/team/vlan dev, so recurse down to add object on
- * each port.
- */
+ struct switchdev_notifier_port_obj_info obj_info = {
+ .obj = obj,
+ .trans = trans,
+ .handled = false,
+ };
 
- netdev_for_each_lower_dev(dev, lower_dev, iter) {
- err = __switchdev_port_obj_add(lower_dev, obj, trans);
- if (err)
- break;
+ rc = call_switchdev_blocking_notifiers(nt, dev, &obj_info.info);
+ err = notifier_to_errno(rc);
+ if (err) {
+ WARN_ON(!obj_info.handled);
+ return err;
  }
-
- return err;
+ if (!obj_info.handled)
+ return -EOPNOTSUPP;
+ return 0;
 }
 
 static int switchdev_port_obj_add_now(struct net_device *dev,
@@ -397,7 +396,8 @@ static int switchdev_port_obj_add_now(struct net_device *dev,
  */
 
  trans.ph_prepare = true;
- err = __switchdev_port_obj_add(dev, obj, &trans);
+ err = switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD,
+ dev, obj, &trans);
  if (err) {
  /* Prepare phase failed: abort the transaction. Any
  * resources reserved in the prepare phase are
@@ -416,7 +416,8 @@ static int switchdev_port_obj_add_now(struct net_device *dev,
  */
 
  trans.ph_prepare = false;
- err = __switchdev_port_obj_add(dev, obj, &trans);
+ err = switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD,
+ dev, obj, &trans);
  WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
  switchdev_trans_items_warn_destroy(dev, &trans);
 
@@ -471,26 +472,8 @@ EXPORT_SYMBOL_GPL(switchdev_port_obj_add);
 static int switchdev_port_obj_del_now(struct net_device *dev,
  const struct switchdev_obj *obj)
 {
- const struct switchdev_ops *ops = dev->switchdev_ops;
- struct net_device *lower_dev;
- struct list_head *iter;
- int err = -EOPNOTSUPP;
-
- if (ops && ops->switchdev_port_obj_del)
- return ops->switchdev_port_obj_del(dev, obj);
-
- /* Switch device port(s) may be stacked under
- * bond/team/vlan dev, so recurse down to delete object on
- * each port.
- */
-
- netdev_for_each_lower_dev(dev, lower_dev, iter) {
- err = switchdev_port_obj_del_now(lower_dev, obj);
- if (err)
- break;
- }
-
- return err;
+ return switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_DEL,
+ dev, obj, NULL);
 }
 
 static void switchdev_port_obj_del_deferred(struct net_device *dev,