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, 11 insertions, 2 deletions

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 69016305ad58..4facfa6775e8 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -149,6 +149,7 @@ enum switchdev_notifier_type {
 
 struct switchdev_notifier_info {
         struct net_device *dev;
+        struct netlink_ext_ack *extack;
 };
 
 struct switchdev_notifier_fdb_info {
@@ -172,6 +173,12 @@ switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
         return info->dev;
 }
 
+static inline struct netlink_ext_ack *
+switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
+{
+        return info->extack;
+}
+
 #ifdef CONFIG_NET_SWITCHDEV
 
 void switchdev_deferred_process(void);
@@ -193,7 +200,8 @@ int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
 int register_switchdev_blocking_notifier(struct notifier_block *nb);
 int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
 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);
 
 void switchdev_port_fwd_mark_set(struct net_device *dev,
                                  struct net_device *group_dev,
@@ -278,7 +286,8 @@ unregister_switchdev_blocking_notifier(struct notifier_block *nb)
 static inline 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)
 {
         return NOTIFY_DONE;
 }