1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved. */
3
4#include "en/devlink.h"
5#include "eswitch.h"
6
7static const struct devlink_ops mlx5e_devlink_ops = {
8};
9
10struct mlx5e_dev *mlx5e_create_devlink(struct device *dev,
11 struct mlx5_core_dev *mdev)
12{
13 struct mlx5e_dev *mlx5e_dev;
14 struct devlink *devlink;
15 int err;
16
17 devlink = devlink_alloc_ns(ops: &mlx5e_devlink_ops, priv_size: sizeof(*mlx5e_dev),
18 net: devlink_net(devlink: priv_to_devlink(priv: mdev)), dev);
19 if (!devlink)
20 return ERR_PTR(error: -ENOMEM);
21
22 err = devl_nested_devlink_set(devlink: priv_to_devlink(priv: mdev), nested_devlink: devlink);
23 if (err) {
24 devlink_free(devlink);
25 return ERR_PTR(error: err);
26 }
27
28 devlink_register(devlink);
29 return devlink_priv(devlink);
30}
31
32void mlx5e_destroy_devlink(struct mlx5e_dev *mlx5e_dev)
33{
34 struct devlink *devlink = priv_to_devlink(priv: mlx5e_dev);
35
36 devlink_unregister(devlink);
37 devlink_free(devlink);
38}
39
40static void
41mlx5e_devlink_get_port_parent_id(struct mlx5_core_dev *dev, struct netdev_phys_item_id *ppid)
42{
43 BUILD_BUG_ON(MLX5_SW_IMAGE_GUID_MAX_BYTES > MAX_PHYS_ITEM_ID_LEN);
44 mlx5_query_nic_sw_system_image_guid(mdev: dev, buf: ppid->id, len: &ppid->id_len);
45}
46
47int mlx5e_devlink_port_register(struct mlx5e_dev *mlx5e_dev,
48 struct mlx5_core_dev *mdev)
49{
50 struct devlink *devlink = priv_to_devlink(priv: mlx5e_dev);
51 struct devlink_port_attrs attrs = {};
52 struct netdev_phys_item_id ppid = {};
53 unsigned int dl_port_index;
54
55 if (mlx5_core_is_pf(dev: mdev)) {
56 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
57 attrs.phys.port_number = mlx5_get_dev_index(dev: mdev);
58 if (MLX5_ESWITCH_MANAGER(mdev)) {
59 mlx5e_devlink_get_port_parent_id(dev: mdev, ppid: &ppid);
60 memcpy(attrs.switch_id.id, ppid.id, ppid.id_len);
61 attrs.switch_id.id_len = ppid.id_len;
62 }
63 dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev: mdev,
64 vport_num: MLX5_VPORT_UPLINK);
65 } else {
66 attrs.flavour = DEVLINK_PORT_FLAVOUR_VIRTUAL;
67 dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev: mdev, vport_num: 0);
68 }
69
70 devlink_port_attrs_set(devlink_port: &mlx5e_dev->dl_port, attrs: &attrs);
71
72 return devlink_port_register(devlink, devlink_port: &mlx5e_dev->dl_port,
73 port_index: dl_port_index);
74}
75
76void mlx5e_devlink_port_unregister(struct mlx5e_dev *mlx5e_dev)
77{
78 devlink_port_unregister(devlink_port: &mlx5e_dev->dl_port);
79}
80

source code of linux/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c