Merge branch 'switchdev-callback'

Vivien Didelot says:

====================
net: switchdev: use specific switchdev_obj_*

This patchset changes switchdev add, del, dump operations from this:

    int     (*switchdev_port_obj_add)(struct net_device *dev,
                                      struct switchdev_obj *obj,
                                      struct switchdev_trans *trans);
    int     (*switchdev_port_obj_del)(struct net_device *dev,
                                      struct switchdev_obj *obj);
    int     (*switchdev_port_obj_dump)(struct net_device *dev,
                                      struct switchdev_obj *obj);

to something similar to the notifier_call callback of a notifier_block:

    int     (*switchdev_port_obj_add)(struct net_device *dev,
                                      enum switchdev_obj_id id,
                                      const void *obj,
                                      struct switchdev_trans *trans);
    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));

This allows the caller to pass and expect back a specific switchdev_obj_*
structure (e.g. switchdev_obj_fdb) instead of the generic switchdev_obj one.

This will simplify pushing the callback function down to the drivers.

The first 3 patches get rid of the dev parameter of the dump callback, since it
is not always neeeded (e.g. vlan_dump) and some drivers (such as DSA drivers)
may not have easy access to it.

Patches 4 and 5 implement the change in the switchdev operations and its users.

Patch 6 extracts the inner switchdev_obj_* structures from switchdev_obj and
removes this last one.

v2: fix error spotted by kbuild (extra ';' inline switchdev_port_obj_dump).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 24 deletions

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f18cae54a5d8..04f01535d2b6 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -242,10 +242,9 @@ static int dsa_bridge_check_vlan_range(struct dsa_switch *ds,
 }
 
 static int dsa_slave_port_vlan_add(struct net_device *dev,
-				   struct switchdev_obj *obj,
+				   const struct switchdev_obj_vlan *vlan,
 				   struct switchdev_trans *trans)
 {
-	struct switchdev_obj_vlan *vlan = &obj->u.vlan;
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
 	u16 vid;
@@ -279,9 +278,8 @@ static int dsa_slave_port_vlan_add(struct net_device *dev,
 }
 
 static int dsa_slave_port_vlan_del(struct net_device *dev,
-				   struct switchdev_obj *obj)
+				   const struct switchdev_obj_vlan *vlan)
 {
-	struct switchdev_obj_vlan *vlan = &obj->u.vlan;
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
 	u16 vid;
@@ -300,9 +298,9 @@ static int dsa_slave_port_vlan_del(struct net_device *dev,
 }
 
 static int dsa_slave_port_vlan_dump(struct net_device *dev,
-				    struct switchdev_obj *obj)
+				    struct switchdev_obj_vlan *vlan,
+				    int (*cb)(void *obj))
 {
-	struct switchdev_obj_vlan *vlan = &obj->u.vlan;
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
 	DECLARE_BITMAP(members, DSA_MAX_PORTS);
@@ -334,7 +332,7 @@ static int dsa_slave_port_vlan_dump(struct net_device *dev,
 		if (test_bit(p->port, untagged))
 			vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 
-		err = obj->cb(dev, obj);
+		err = cb(vlan);
 		if (err)
 			break;
 	}
@@ -343,10 +341,9 @@ static int dsa_slave_port_vlan_dump(struct net_device *dev,
 }
 
 static int dsa_slave_port_fdb_add(struct net_device *dev,
-				  struct switchdev_obj *obj,
+				  const struct switchdev_obj_fdb *fdb,
 				  struct switchdev_trans *trans)
 {
-	struct switchdev_obj_fdb *fdb = &obj->u.fdb;
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
 	int ret = -EOPNOTSUPP;
@@ -360,9 +357,8 @@ static int dsa_slave_port_fdb_add(struct net_device *dev,
 }
 
 static int dsa_slave_port_fdb_del(struct net_device *dev,
-				  struct switchdev_obj *obj)
+				  const struct switchdev_obj_fdb *fdb)
 {
-	struct switchdev_obj_fdb *fdb = &obj->u.fdb;
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
 	int ret = -EOPNOTSUPP;
@@ -374,7 +370,8 @@ static int dsa_slave_port_fdb_del(struct net_device *dev,
 }
 
 static int dsa_slave_port_fdb_dump(struct net_device *dev,
-				   struct switchdev_obj *obj)
+				   struct switchdev_obj_fdb *fdb,
+				   int (*cb)(void *obj))
 {
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
@@ -393,11 +390,11 @@ static int dsa_slave_port_fdb_dump(struct net_device *dev,
 		if (ret < 0)
 			break;
 
-		obj->u.fdb.addr = addr;
-		obj->u.fdb.vid = vid;
-		obj->u.fdb.ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
+		fdb->addr = addr;
+		fdb->vid = vid;
+		fdb->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
 
-		ret = obj->cb(dev, obj);
+		ret = cb(fdb);
 		if (ret < 0)
 			break;
 	}
@@ -472,7 +469,7 @@ static int dsa_slave_port_attr_set(struct net_device *dev,
 }
 
 static int dsa_slave_port_obj_add(struct net_device *dev,
-				  struct switchdev_obj *obj,
+				  enum switchdev_obj_id id, const void *obj,
 				  struct switchdev_trans *trans)
 {
 	int err;
@@ -482,7 +479,7 @@ static int dsa_slave_port_obj_add(struct net_device *dev,
 	 * supported, return -EOPNOTSUPP.
 	 */
 
-	switch (obj->id) {
+	switch (id) {
 	case SWITCHDEV_OBJ_PORT_FDB:
 		err = dsa_slave_port_fdb_add(dev, obj, trans);
 		break;
@@ -498,11 +495,11 @@ static int dsa_slave_port_obj_add(struct net_device *dev,
 }
 
 static int dsa_slave_port_obj_del(struct net_device *dev,
-				  struct switchdev_obj *obj)
+				  enum switchdev_obj_id id, const void *obj)
 {
 	int err;
 
-	switch (obj->id) {
+	switch (id) {
 	case SWITCHDEV_OBJ_PORT_FDB:
 		err = dsa_slave_port_fdb_del(dev, obj);
 		break;
@@ -518,16 +515,17 @@ static int dsa_slave_port_obj_del(struct net_device *dev,
 }
 
 static int dsa_slave_port_obj_dump(struct net_device *dev,
-				   struct switchdev_obj *obj)
+				   enum switchdev_obj_id id, void *obj,
+				   int (*cb)(void *obj))
 {
 	int err;
 
-	switch (obj->id) {
+	switch (id) {
 	case SWITCHDEV_OBJ_PORT_FDB:
-		err = dsa_slave_port_fdb_dump(dev, obj);
+		err = dsa_slave_port_fdb_dump(dev, obj, cb);
 		break;
 	case SWITCHDEV_OBJ_PORT_VLAN:
-		err = dsa_slave_port_vlan_dump(dev, obj);
+		err = dsa_slave_port_vlan_dump(dev, obj, cb);
 		break;
 	default:
 		err = -EOPNOTSUPP;