core/en/devlink.c

0001 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
0002 /* Copyright (c) 2020, Mellanox Technologies inc.  All rights reserved. */
0003
0004 #include "en/devlink.h"
0005 #include "eswitch.h"
0006
0007 static void
0008 mlx5e_devlink_get_port_parent_id(struct mlx5_core_dev *dev, struct netdev_phys_item_id *ppid)
0009 {
0010     u64 parent_id;
0011
0012     parent_id = mlx5_query_nic_system_image_guid(dev);
0013     ppid->id_len = sizeof(parent_id);
0014     memcpy(ppid->id, &parent_id, sizeof(parent_id));
0015 }
0016
0017 int mlx5e_devlink_port_register(struct mlx5e_priv *priv)
0018 {
0019     struct devlink *devlink = priv_to_devlink(priv->mdev);
0020     struct devlink_port_attrs attrs = {};
0021     struct netdev_phys_item_id ppid = {};
0022     struct devlink_port *dl_port;
0023     unsigned int dl_port_index;
0024     int ret;
0025
0026     if (mlx5_core_is_pf(priv->mdev)) {
0027         attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
0028         attrs.phys.port_number = mlx5_get_dev_index(priv->mdev);
0029         if (MLX5_ESWITCH_MANAGER(priv->mdev)) {
0030             mlx5e_devlink_get_port_parent_id(priv->mdev, &ppid);
0031             memcpy(attrs.switch_id.id, ppid.id, ppid.id_len);
0032             attrs.switch_id.id_len = ppid.id_len;
0033         }
0034         dl_port_index = mlx5_esw_vport_to_devlink_port_index(priv->mdev,
0035                                      MLX5_VPORT_UPLINK);
0036     } else {
0037         attrs.flavour = DEVLINK_PORT_FLAVOUR_VIRTUAL;
0038         dl_port_index = mlx5_esw_vport_to_devlink_port_index(priv->mdev, 0);
0039     }
0040
0041     dl_port = mlx5e_devlink_get_dl_port(priv);
0042     memset(dl_port, 0, sizeof(*dl_port));
0043     devlink_port_attrs_set(dl_port, &attrs);
0044
0045     if (!(priv->mdev->priv.flags & MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW))
0046         devl_lock(devlink);
0047     ret = devl_port_register(devlink, dl_port, dl_port_index);
0048     if (!(priv->mdev->priv.flags & MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW))
0049         devl_unlock(devlink);
0050
0051     return ret;
0052 }
0053
0054 void mlx5e_devlink_port_type_eth_set(struct mlx5e_priv *priv)
0055 {
0056     struct devlink_port *dl_port = mlx5e_devlink_get_dl_port(priv);
0057
0058     devlink_port_type_eth_set(dl_port, priv->netdev);
0059 }
0060
0061 void mlx5e_devlink_port_unregister(struct mlx5e_priv *priv)
0062 {
0063     struct devlink_port *dl_port = mlx5e_devlink_get_dl_port(priv);
0064     struct devlink *devlink = priv_to_devlink(priv->mdev);
0065
0066     if (!(priv->mdev->priv.flags & MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW))
0067         devl_lock(devlink);
0068     devl_port_unregister(dl_port);
0069     if (!(priv->mdev->priv.flags & MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW))
0070         devl_unlock(devlink);
0071 }
0072
0073 struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
0074 {
0075     struct mlx5e_priv *priv = netdev_priv(dev);
0076
0077     if (!netif_device_present(dev))
0078         return NULL;
0079
0080     return mlx5e_devlink_get_dl_port(priv);
0081 }