net/mlx5: Introduce attach/detach to interface API

Add attach/detach callbacks to interface API.
This is crucial for implementing seamless reset flow which releases the
hardware and it's resources upon detach while keeping software
structures and state (e.g netdev) then reset and reallocate the hardware
needed resources upon attach.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 0d7aedfce1d7..85c4786427e4 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -930,6 +930,8 @@ enum {
 struct mlx5_interface {
         void *                  (*add)(struct mlx5_core_dev *dev);
         void                    (*remove)(struct mlx5_core_dev *dev, void *context);
+        int                     (*attach)(struct mlx5_core_dev *dev, void *context);
+        void                    (*detach)(struct mlx5_core_dev *dev, void *context);
         void                    (*event)(struct mlx5_core_dev *dev, void *context,
                                          enum mlx5_dev_event event, unsigned long param);
         void *                  (*get_dev)(void *context);