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 u64 parent_id;
44
45 parent_id = mlx5_query_nic_system_image_guid(mdev: dev);
46 ppid->id_len = sizeof(parent_id);
47 memcpy(ppid->id, &parent_id, sizeof(parent_id));
48}
49
50int mlx5e_devlink_port_register(struct mlx5e_dev *mlx5e_dev,
51 struct mlx5_core_dev *mdev)
52{
53 struct devlink *devlink = priv_to_devlink(priv: mlx5e_dev);
54 struct devlink_port_attrs attrs = {};
55 struct netdev_phys_item_id ppid = {};
56 unsigned int dl_port_index;
57
58 if (mlx5_core_is_pf(dev: mdev)) {
59 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
60 attrs.phys.port_number = mlx5_get_dev_index(dev: mdev);
61 if (MLX5_ESWITCH_MANAGER(mdev)) {
62 mlx5e_devlink_get_port_parent_id(dev: mdev, ppid: &ppid);
63 memcpy(attrs.switch_id.id, ppid.id, ppid.id_len);
64 attrs.switch_id.id_len = ppid.id_len;
65 }
66 dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev: mdev,
67 vport_num: MLX5_VPORT_UPLINK);
68 } else {
69 attrs.flavour = DEVLINK_PORT_FLAVOUR_VIRTUAL;
70 dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev: mdev, vport_num: 0);
71 }
72
73 devlink_port_attrs_set(devlink_port: &mlx5e_dev->dl_port, devlink_port_attrs: &attrs);
74
75 return devlink_port_register(devlink, devlink_port: &mlx5e_dev->dl_port,
76 port_index: dl_port_index);
77}
78
79void mlx5e_devlink_port_unregister(struct mlx5e_dev *mlx5e_dev)
80{
81 devlink_port_unregister(devlink_port: &mlx5e_dev->dl_port);
82}
83

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