net: switchdev: Add extack to struct switchdev_notifier_info

In order to pass extack to the drivers that need it, add an extack field
to struct switchdev_notifier_info, and an extack argument to the
function call_switchdev_blocking_notifiers(). Also add a helper function
switchdev_notifier_info_to_extack().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index cb20669bf6ce..aa84acfb6632 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -368,7 +368,7 @@ static int switchdev_port_obj_notify(enum switchdev_notifier_type nt,
                 .handled = false,
         };
 
-        rc = call_switchdev_blocking_notifiers(nt, dev, &obj_info.info);
+        rc = call_switchdev_blocking_notifiers(nt, dev, &obj_info.info, extack);
         err = notifier_to_errno(rc);
         if (err) {
                 WARN_ON(!obj_info.handled);
@@ -559,6 +559,7 @@ int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
                              struct switchdev_notifier_info *info)
 {
         info->dev = dev;
+        info->extack = NULL;
         return atomic_notifier_call_chain(&switchdev_notif_chain, val, info);
 }
 EXPORT_SYMBOL_GPL(call_switchdev_notifiers);
@@ -580,9 +581,11 @@ int unregister_switchdev_blocking_notifier(struct notifier_block *nb)
 EXPORT_SYMBOL_GPL(unregister_switchdev_blocking_notifier);
 
 int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
-                                      struct switchdev_notifier_info *info)
+                                      struct switchdev_notifier_info *info,
+                                      struct netlink_ext_ack *extack)
 {
         info->dev = dev;
+        info->extack = extack;
         return blocking_notifier_call_chain(&switchdev_blocking_notif_chain,
                                             val, info);
 }