IB/mlx5: Enable IPoIB acceleration

Enable mlx5 IPoIB acceleration by declaring
mlx5_ib_{alloc,free}_rdma_netdev and assigning the mlx5
IPoIB rdma_netdev callbacks.

In addition, this patch brings in sync mlx5's IPoIB parts for net and IB
trees. As a precaution, we disabled IPoIB acceleration by default (in
the mlx5_core Kconfig file).

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 3fece51dcf13..cef2b98d479f 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -1102,6 +1102,25 @@ struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev);
 struct mlx5_uars_page *mlx5_get_uars_page(struct mlx5_core_dev *mdev);
 void mlx5_put_uars_page(struct mlx5_core_dev *mdev, struct mlx5_uars_page *up);
 
+#ifndef CONFIG_MLX5_CORE_IPOIB
+static inline
+struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
+                                          struct ib_device *ibdev,
+                                          const char *name,
+                                          void (*setup)(struct net_device *))
+{
+        return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void mlx5_rdma_netdev_free(struct net_device *netdev) {}
+#else
+struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
+                                          struct ib_device *ibdev,
+                                          const char *name,
+                                          void (*setup)(struct net_device *));
+void mlx5_rdma_netdev_free(struct net_device *netdev);
+#endif /* CONFIG_MLX5_CORE_IPOIB */
+
 struct mlx5_profile {
         u64     mask;
         u8      log_max_qp;