diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_devlink.c')
-rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_devlink.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_devlink.c b/drivers/net/ethernet/intel/i40e/i40e_devlink.c new file mode 100644 index 000000000000..66b7f5be45ae --- /dev/null +++ b/drivers/net/ethernet/intel/i40e/i40e_devlink.c @@ -0,0 +1,118 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2023 Intel Corporation. */ + +#include <net/devlink.h> +#include "i40e.h" +#include "i40e_devlink.h" + +static const struct devlink_ops i40e_devlink_ops = { +}; + +/** + * i40e_alloc_pf - Allocate devlink and return i40e_pf structure pointer + * @dev: the device to allocate for + * + * Allocate a devlink instance for this device and return the private + * area as the i40e_pf structure. + **/ +struct i40e_pf *i40e_alloc_pf(struct device *dev) +{ + struct devlink *devlink; + + devlink = devlink_alloc(&i40e_devlink_ops, sizeof(struct i40e_pf), dev); + if (!devlink) + return NULL; + + return devlink_priv(devlink); +} + +/** + * i40e_free_pf - Free i40e_pf structure and associated devlink + * @pf: the PF structure + * + * Free i40e_pf structure and devlink allocated by devlink_alloc. + **/ +void i40e_free_pf(struct i40e_pf *pf) +{ + struct devlink *devlink = priv_to_devlink(pf); + + devlink_free(devlink); +} + +/** + * i40e_devlink_register - Register devlink interface for this PF + * @pf: the PF to register the devlink for. + * + * Register the devlink instance associated with this physical function. + **/ +void i40e_devlink_register(struct i40e_pf *pf) +{ + devlink_register(priv_to_devlink(pf)); +} + +/** + * i40e_devlink_unregister - Unregister devlink resources for this PF. + * @pf: the PF structure to cleanup + * + * Releases resources used by devlink and cleans up associated memory. + **/ +void i40e_devlink_unregister(struct i40e_pf *pf) +{ + devlink_unregister(priv_to_devlink(pf)); +} + +/** + * i40e_devlink_set_switch_id - Set unique switch id based on pci dsn + * @pf: the PF to create a devlink port for + * @ppid: struct with switch id information + */ +static void i40e_devlink_set_switch_id(struct i40e_pf *pf, + struct netdev_phys_item_id *ppid) +{ + u64 id = pci_get_dsn(pf->pdev); + + ppid->id_len = sizeof(id); + put_unaligned_be64(id, &ppid->id); +} + +/** + * i40e_devlink_create_port - Create a devlink port for this PF + * @pf: the PF to create a port for + * + * Create and register a devlink_port for this PF. Note that although each + * physical function is connected to a separate devlink instance, the port + * will still be numbered according to the physical function id. + * + * Return: zero on success or an error code on failure. + **/ +int i40e_devlink_create_port(struct i40e_pf *pf) +{ + struct devlink *devlink = priv_to_devlink(pf); + struct devlink_port_attrs attrs = {}; + struct device *dev = &pf->pdev->dev; + int err; + + attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; + attrs.phys.port_number = pf->hw.pf_id; + i40e_devlink_set_switch_id(pf, &attrs.switch_id); + devlink_port_attrs_set(&pf->devlink_port, &attrs); + err = devlink_port_register(devlink, &pf->devlink_port, pf->hw.pf_id); + if (err) { + dev_err(dev, "devlink_port_register failed: %d\n", err); + return err; + } + + return 0; +} + +/** + * i40e_devlink_destroy_port - Destroy the devlink_port for this PF + * @pf: the PF to cleanup + * + * Unregisters the devlink_port structure associated with this PF. + **/ +void i40e_devlink_destroy_port(struct i40e_pf *pf) +{ + devlink_port_type_clear(&pf->devlink_port); + devlink_port_unregister(&pf->devlink_port); +} |