net/mlx5: Add raw ethernet local loopback firmware command

Add support for raw ethernet local loopback firmware command.

Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vport.c b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
index 5abfec1..d653b00 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/vport.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
@@ -897,6 +897,68 @@ int mlx5_modify_nic_vport_promisc(struct mlx5_core_dev *mdev,
 }
 EXPORT_SYMBOL_GPL(mlx5_modify_nic_vport_promisc);
 
+enum {
+       UC_LOCAL_LB,
+       MC_LOCAL_LB
+};
+
+int mlx5_nic_vport_update_local_lb(struct mlx5_core_dev *mdev, bool enable)
+{
+       int inlen = MLX5_ST_SZ_BYTES(modify_nic_vport_context_in);
+       void *in;
+       int err;
+
+       mlx5_core_dbg(mdev, "%s local_lb\n", enable ? "enable" : "disable");
+       in = kvzalloc(inlen, GFP_KERNEL);
+       if (!in)
+               return -ENOMEM;
+
+       MLX5_SET(modify_nic_vport_context_in, in,
+                field_select.disable_mc_local_lb, 1);
+       MLX5_SET(modify_nic_vport_context_in, in,
+                nic_vport_context.disable_mc_local_lb, !enable);
+
+       MLX5_SET(modify_nic_vport_context_in, in,
+                field_select.disable_uc_local_lb, 1);
+       MLX5_SET(modify_nic_vport_context_in, in,
+                nic_vport_context.disable_uc_local_lb, !enable);
+
+       err = mlx5_modify_nic_vport_context(mdev, in, inlen);
+
+       kvfree(in);
+       return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_nic_vport_update_local_lb);
+
+int mlx5_nic_vport_query_local_lb(struct mlx5_core_dev *mdev, bool *status)
+{
+       int outlen = MLX5_ST_SZ_BYTES(query_nic_vport_context_out);
+       u32 *out;
+       int value;
+       int err;
+
+       out = kzalloc(outlen, GFP_KERNEL);
+       if (!out)
+               return -ENOMEM;
+
+       err = mlx5_query_nic_vport_context(mdev, 0, out, outlen);
+       if (err)
+               goto out;
+
+       value = MLX5_GET(query_nic_vport_context_out, out,
+                        nic_vport_context.disable_mc_local_lb) << MC_LOCAL_LB;
+
+       value |= MLX5_GET(query_nic_vport_context_out, out,
+                         nic_vport_context.disable_uc_local_lb) << UC_LOCAL_LB;
+
+       *status = !value;
+
+out:
+       kfree(out);
+       return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_nic_vport_query_local_lb);
+
 enum mlx5_vport_roce_state {
        MLX5_VPORT_ROCE_DISABLED = 0,
        MLX5_VPORT_ROCE_ENABLED  = 1,

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 87869c0..57c75e8 100644 (file)
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1016,7 +1016,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
        u8         log_max_wq_sz[0x5];
 
        u8         nic_vport_change_event[0x1];
-       u8         reserved_at_3e1[0xa];
+       u8         disable_local_lb[0x1];
+       u8         reserved_at_3e2[0x9];
        u8         log_max_vlan_list[0x5];
        u8         reserved_at_3f0[0x3];
        u8         log_max_current_mc_list[0x5];
@@ -2562,7 +2563,9 @@ struct mlx5_ifc_rmpc_bits {
 struct mlx5_ifc_nic_vport_context_bits {
        u8         reserved_at_0[0x5];
        u8         min_wqe_inline_mode[0x3];
-       u8         reserved_at_8[0x17];
+       u8         reserved_at_8[0x15];
+       u8         disable_mc_local_lb[0x1];
+       u8         disable_uc_local_lb[0x1];
        u8         roce_en[0x1];
 
        u8         arm_change_event[0x1];
@@ -5229,7 +5232,9 @@ struct mlx5_ifc_modify_nic_vport_context_out_bits {
 };
 
 struct mlx5_ifc_modify_nic_vport_field_select_bits {
-       u8         reserved_at_0[0x16];
+       u8         reserved_at_0[0x14];
+       u8         disable_uc_local_lb[0x1];
+       u8         disable_mc_local_lb[0x1];
        u8         node_guid[0x1];
        u8         port_guid[0x1];
        u8         min_inline[0x1];

diff --git a/include/linux/mlx5/vport.h b/include/linux/mlx5/vport.h
index 656c70b..aaa0bb9 100644 (file)
--- a/include/linux/mlx5/vport.h
+++ b/include/linux/mlx5/vport.h
@@ -114,5 +114,6 @@ int mlx5_core_modify_hca_vport_context(struct mlx5_core_dev *dev,
                                       u8 other_vport, u8 port_num,
                                       int vf,
                                       struct mlx5_hca_vport_context *req);
-
+int mlx5_nic_vport_update_local_lb(struct mlx5_core_dev *mdev, bool enable);
+int mlx5_nic_vport_query_local_lb(struct mlx5_core_dev *mdev, bool *status);
 #endif /* __MLX5_VPORT_H__ */