switchdev: Adding complete operation to deferred switchdev ops

When using switchdev deferred operation (SWITCHDEV_F_DEFER), the operation
is executed in different context and the application doesn't have any way
to get the operation real status.

Adding a completion callback fixes that. This patch adds fields to
switchdev_attr and switchdev_obj "complete_priv" field which is used by
the "complete" callback.

Application can set a complete function which will be called once the
operation executed.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index d451122..51d77b2 100644 (file)
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -54,6 +54,8 @@ struct switchdev_attr {
        struct net_device *orig_dev;
        enum switchdev_attr_id id;
        u32 flags;
+       void *complete_priv;
+       void (*complete)(struct net_device *dev, int err, void *priv);
        union {
                struct netdev_phys_item_id ppid;        /* PORT_PARENT_ID */
                u8 stp_state;                           /* PORT_STP_STATE */
@@ -75,6 +77,8 @@ struct switchdev_obj {
        struct net_device *orig_dev;
        enum switchdev_obj_id id;
        u32 flags;
+       void *complete_priv;
+       void (*complete)(struct net_device *dev, int err, void *priv);
 };
 
 /* SWITCHDEV_OBJ_ID_PORT_VLAN */

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 2b9b98f..b7e01d8 100644 (file)
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -305,6 +305,8 @@ static void switchdev_port_attr_set_deferred(struct net_device *dev,
        if (err && err != -EOPNOTSUPP)
                netdev_err(dev, "failed (err=%d) to set attribute (id=%d)\n",
                           err, attr->id);
+       if (attr->complete)
+               attr->complete(dev, err, attr->complete_priv);
 }
 
 static int switchdev_port_attr_set_defer(struct net_device *dev,
@@ -434,6 +436,8 @@ static void switchdev_port_obj_add_deferred(struct net_device *dev,
        if (err && err != -EOPNOTSUPP)
                netdev_err(dev, "failed (err=%d) to add object (id=%d)\n",
                           err, obj->id);
+       if (obj->complete)
+               obj->complete(dev, err, obj->complete_priv);
 }
 
 static int switchdev_port_obj_add_defer(struct net_device *dev,
@@ -502,6 +506,8 @@ static void switchdev_port_obj_del_deferred(struct net_device *dev,
        if (err && err != -EOPNOTSUPP)
                netdev_err(dev, "failed (err=%d) to del object (id=%d)\n",
                           err, obj->id);
+       if (obj->complete)
+               obj->complete(dev, err, obj->complete_priv);
 }
 
 static int switchdev_port_obj_del_defer(struct net_device *dev,