net: switchdev: abstract object in add/del ops

Similar to the notifier_call callback of a notifier_block, change the
function signature of switchdev add and del operations to:

    int switchdev_port_obj_add/del(struct net_device *dev,
                                   enum switchdev_obj_id id, void *obj);

This allows the caller to pass a specific switchdev_obj_* structure
instead of the generic switchdev_obj one.

Drivers implementation of these operations and switchdev have been
changed accordingly.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 6 deletions

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index a2f57fb5f622..bcadac33c29c 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -115,10 +115,12 @@ struct switchdev_ops {
                                            struct switchdev_attr *attr,
                                            struct switchdev_trans *trans);
         int     (*switchdev_port_obj_add)(struct net_device *dev,
-                                          struct switchdev_obj *obj,
+                                          enum switchdev_obj_id id,
+                                          const void *obj,
                                           struct switchdev_trans *trans);
         int     (*switchdev_port_obj_del)(struct net_device *dev,
-                                          struct switchdev_obj *obj);
+                                          enum switchdev_obj_id id,
+                                          const void *obj);
         int     (*switchdev_port_obj_dump)(struct net_device *dev,
                                            enum switchdev_obj_id id, void *obj,
                                            int (*cb)(void *obj));
@@ -151,8 +153,10 @@ int switchdev_port_attr_get(struct net_device *dev,
                             struct switchdev_attr *attr);
 int switchdev_port_attr_set(struct net_device *dev,
                             struct switchdev_attr *attr);
-int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
-int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
+int switchdev_port_obj_add(struct net_device *dev, enum switchdev_obj_id id,
+                           const void *obj);
+int switchdev_port_obj_del(struct net_device *dev, enum switchdev_obj_id id,
+                           const void *obj);
 int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id,
                             void *obj, int (*cb)(void *obj));
 int register_switchdev_notifier(struct notifier_block *nb);
@@ -199,13 +203,15 @@ static inline int switchdev_port_attr_set(struct net_device *dev,
 }
 
 static inline int switchdev_port_obj_add(struct net_device *dev,
-                                         struct switchdev_obj *obj)
+                                         enum switchdev_obj_id id,
+                                         const void *obj)
 {
         return -EOPNOTSUPP;
 }
 
 static inline int switchdev_port_obj_del(struct net_device *dev,
-                                         struct switchdev_obj *obj)
+                                         enum switchdev_obj_id id,
+                                         const void *obj)
 {
         return -EOPNOTSUPP;
 }