IB/mlx5: Add basic regiser/unregister representors code

Create the basic infrastructure of registering and unregistering
IB representors. The load/unload callbacks are left empty and
proper implementation will be introduced in following patches.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx5/ib_rep.c b/drivers/infiniband/hw/mlx5/ib_rep.c
new file mode 100644
index 000000000000..adf2439ddacb
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/ib_rep.c
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/*
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ */
+
+#include "ib_rep.h"
+
+static int
+mlx5_ib_nic_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
+{
+	return 0;
+}
+
+static void
+mlx5_ib_nic_rep_unload(struct mlx5_eswitch_rep *rep)
+{
+}
+
+static int
+mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
+{
+	return 0;
+}
+
+static void
+mlx5_ib_vport_rep_unload(struct mlx5_eswitch_rep *rep)
+{
+}
+
+static void *mlx5_ib_vport_get_proto_dev(struct mlx5_eswitch_rep *rep)
+{
+	return mlx5_ib_rep_to_dev(rep);
+}
+
+static void mlx5_ib_rep_register_vf_vports(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
+	int total_vfs = MLX5_TOTAL_VPORTS(dev->mdev);
+	int vport;
+
+	for (vport = 1; vport < total_vfs; vport++) {
+		struct mlx5_eswitch_rep_if rep_if = {};
+
+		rep_if.load = mlx5_ib_vport_rep_load;
+		rep_if.unload = mlx5_ib_vport_rep_unload;
+		rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
+		mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_IB);
+	}
+}
+
+static void mlx5_ib_rep_unregister_vf_vports(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
+	int total_vfs = MLX5_TOTAL_VPORTS(dev->mdev);
+	int vport;
+
+	for (vport = 1; vport < total_vfs; vport++)
+		mlx5_eswitch_unregister_vport_rep(esw, vport, REP_IB);
+}
+
+void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
+	struct mlx5_eswitch_rep_if rep_if = {};
+
+	rep_if.load = mlx5_ib_nic_rep_load;
+	rep_if.unload = mlx5_ib_nic_rep_unload;
+	rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
+	rep_if.priv = dev;
+
+	mlx5_eswitch_register_vport_rep(esw, 0, &rep_if, REP_IB);
+
+	mlx5_ib_rep_register_vf_vports(dev);
+}
+
+void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
+
+	mlx5_ib_rep_unregister_vf_vports(dev); /* VFs vports */
+	mlx5_eswitch_unregister_vport_rep(esw, 0, REP_IB); /* UPLINK PF*/
+}
+
+u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)
+{
+	return mlx5_eswitch_mode(esw);
+}
+
+struct mlx5_ib_dev *mlx5_ib_get_rep_ibdev(struct mlx5_eswitch *esw,
+					  int vport_index)
+{
+	return mlx5_eswitch_get_proto_dev(esw, vport_index, REP_IB);
+}
+
+struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
+					  int vport_index)
+{
+	return mlx5_eswitch_get_proto_dev(esw, vport_index, REP_ETH);
+}
+
+struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw, int vport)
+{
+	return mlx5_eswitch_vport_rep(esw, vport);
+}