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>

diff --git a/drivers/infiniband/hw/mlx5/Makefile b/drivers/infiniband/hw/mlx5/Makefile
index bc62996..d42b922 100644 (file)
--- a/drivers/infiniband/hw/mlx5/Makefile
+++ b/drivers/infiniband/hw/mlx5/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_MLX5_INFINIBAND)   += mlx5_ib.o
 
 mlx5_ib-y :=   main.o cq.o doorbell.o qp.o mem.o srq.o mr.o ah.o mad.o gsi.o ib_virt.o cmd.o cong.o
 mlx5_ib-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) += odp.o
+mlx5_ib-$(CONFIG_MLX5_ESWITCH) += ib_rep.o

diff --git a/drivers/infiniband/hw/mlx5/ib_rep.c b/drivers/infiniband/hw/mlx5/ib_rep.c
new file mode 100644 (file)
index 0000000..adf2439
--- /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);
+}

diff --git a/drivers/infiniband/hw/mlx5/ib_rep.h b/drivers/infiniband/hw/mlx5/ib_rep.h
new file mode 100644 (file)
index 0000000..64ab54b
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/ib_rep.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/*
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ */
+
+#ifndef __MLX5_IB_REP_H__
+#define __MLX5_IB_REP_H__
+
+#include <linux/mlx5/eswitch.h>
+#include "mlx5_ib.h"
+
+#ifdef CONFIG_MLX5_ESWITCH
+u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw);
+struct mlx5_ib_dev *mlx5_ib_get_rep_ibdev(struct mlx5_eswitch *esw,
+                                         int vport_index);
+struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw,
+                                          int vport_index);
+void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev);
+void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev);
+#else /* CONFIG_MLX5_ESWITCH */
+static inline u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)
+{
+       return SRIOV_NONE;
+}
+
+static inline
+struct mlx5_ib_dev *mlx5_ib_get_rep_ibdev(struct mlx5_eswitch *esw,
+                                         int vport_index)
+{
+       return NULL;
+}
+
+static inline
+struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw,
+                                          int vport_index)
+{
+       return NULL;
+}
+
+static inline void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev) {}
+static inline void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev) {}
+#endif
+
+static inline
+struct mlx5_ib_dev *mlx5_ib_rep_to_dev(struct mlx5_eswitch_rep *rep)
+{
+       return (struct mlx5_ib_dev *)rep->rep_if[REP_IB].priv;
+}
+#endif /* __MLX5_IB_REP_H__ */

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 4236c80..7253222 100644 (file)
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -57,6 +57,7 @@
 #include <linux/in.h>
 #include <linux/etherdevice.h>
 #include "mlx5_ib.h"
+#include "ib_rep.h"
 #include "cmd.h"
 
 #define DRIVER_NAME "mlx5_ib"
@@ -4905,6 +4906,18 @@ static int mlx5_ib_stage_class_attr_init(struct mlx5_ib_dev *dev)
        return 0;
 }
 
+static int mlx5_ib_stage_rep_reg_init(struct mlx5_ib_dev *dev)
+{
+       mlx5_ib_register_vport_reps(dev);
+
+       return 0;
+}
+
+static void mlx5_ib_stage_rep_reg_cleanup(struct mlx5_ib_dev *dev)
+{
+       mlx5_ib_unregister_vport_reps(dev);
+}
+
 static void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
                             const struct mlx5_ib_profile *profile,
                             int stage)

diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index eafb975..ec798c6 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -743,6 +743,7 @@ enum mlx5_ib_stages {
        MLX5_IB_STAGE_UMR_RESOURCES,
        MLX5_IB_STAGE_DELAY_DROP,
        MLX5_IB_STAGE_CLASS_ATTR,
+       MLX5_IB_STAGE_REP_REG,
        MLX5_IB_STAGE_MAX,
 };
 
@@ -807,6 +808,7 @@ struct mlx5_ib_dev {
        struct mlx5_sq_bfreg    fp_bfreg;
        struct mlx5_ib_delay_drop       delay_drop;
        const struct mlx5_ib_profile    *profile;
+       struct mlx5_eswitch_rep         *rep;
 
        /* protect the user_td */
        struct mutex            lb_mutex;