// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2024, Intel Corporation. */
#include <linux/vmalloc.h>
#include "ice.h"
#include "devlink.h"
#include "devlink_port.h"
#include "ice_lib.h"
#include "ice_fltr.h"
static int ice_active_port_option = -1;
/**
* ice_devlink_port_opt_speed_str - convert speed to a string
* @speed: speed value
*/
static const char *ice_devlink_port_opt_speed_str(u8 speed)
{
switch (speed & ICE_AQC_PORT_OPT_MAX_LANE_M) {
case ICE_AQC_PORT_OPT_MAX_LANE_100M:
return "0.1";
case ICE_AQC_PORT_OPT_MAX_LANE_1G:
return "1";
case ICE_AQC_PORT_OPT_MAX_LANE_2500M:
return "2.5";
case ICE_AQC_PORT_OPT_MAX_LANE_5G:
return "5";
case ICE_AQC_PORT_OPT_MAX_LANE_10G:
return "10";
case ICE_AQC_PORT_OPT_MAX_LANE_25G:
return "25";
case ICE_AQC_PORT_OPT_MAX_LANE_50G:
return "50";
case ICE_AQC_PORT_OPT_MAX_LANE_100G:
return "100";
}
return "-";
}
#define ICE_PORT_OPT_DESC_LEN 50
/**
* ice_devlink_port_options_print - Print available port split options
* @pf: the PF to print split port options
*
* Prints a table with available port split options and max port speeds
*/
static void ice_devlink_port_options_print(struct ice_pf *pf)
{
u8 i, j, options_count, cnt, speed, pending_idx, active_idx;
struct ice_aqc_get_port_options_elem *options, *opt;
struct device *dev = ice_pf_to_dev(pf);
bool active_valid, pending_valid;
char desc[ICE_PORT_OPT_DESC_LEN];
const char *str;
int status;
options = kcalloc(ICE_AQC_PORT_OPT_MAX * ICE_MAX_PORT_PER_PCI_DEV,
sizeof(*options), GFP_KERNEL);
if (!options)
return;
for (i = 0; i < ICE_MAX_PORT_PER_PCI_DEV; i++) {
opt = options + i * ICE_AQC_PORT_OPT_MAX;
options_count = ICE_AQC_PORT_OPT_MAX;
active_valid = 0;
status = ice_aq_get_port_options(&pf->hw, opt, &options_count,
i, true, &active_idx,
&active_valid, &pending_idx,
&pending_valid);
if (status) {
dev_dbg(dev, "Couldn't read port option for port %d, err %d\n",
i, status);
goto err;
}
}
dev_dbg(dev, "Available port split options and max port speeds (Gbps):\n");
dev_dbg(dev, "Status Split Quad 0 Quad 1\n");
dev_dbg(dev, " count L0 L1 L2 L3 L4 L5 L6 L7\n");
for (i = 0; i < options_count; i++) {
cnt = 0;
if (i == ice_active_port_option)
str = "Active";
else if ((i == pending_idx) && pending_valid)
str = "Pending";
else
str = "";
cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
"%-8s", str);
cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
"%-6u", options[i].pmd);
for (j = 0; j < ICE_MAX_PORT_PER_PCI_DEV; ++j) {
speed = options[i + j * ICE_AQC_PORT_OPT_MAX].max_lane_speed;
str = ice_devlink_port_opt_speed_str(speed);
cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
"%3s ", str);
}
dev_dbg(dev, "%s\n", desc);
}
err:
kfree(options);
}
/**
* ice_devlink_aq_set_port_option - Send set port option admin queue command
* @pf: the PF to print split port options
* @option_idx: selected port option
* @extack: extended netdev ack structure
*
* Sends set port option admin queue command with selected port option and
* calls NVM write activate.
*/
static int
ice_devlink_aq_set_port_option(struct ice_pf *pf, u8 option_idx,
struct netlink_ext_ack *extack)
{
struct device *dev = ice_pf_to_dev(pf);
int status;
status = ice_aq_set_port_option(&pf->hw, 0, true, option_idx);
if (status) {
dev_dbg(dev, "ice_aq_set_port_option, err %d aq_err %d\n",
status, pf->hw.adminq.sq_last_status);
NL_SET_ERR_MSG_MOD(extack, "Port split request failed");
return -EIO;
}
status = ice_acquire_nvm(&pf->hw, ICE_RES_WRITE);
if (status) {
dev_dbg(dev, "ice_acquire_nvm failed, err %d aq_err %d\n",
status, pf->hw.adminq.sq_last_status);
NL_SET_ERR_MSG_MOD(extack, "Failed to acquire NVM semaphore");
return -EIO;
}
status = ice_nvm_write_activate(&pf->hw, ICE_AQC_NVM_ACTIV_REQ_EMPR, NULL);
if (status) {
dev_dbg(dev, "ice_nvm_write_activate failed, err %d aq_err %d\n",
status, pf->hw.adminq.sq_last_status);
NL_SET_ERR_MSG_MOD(extack, "Port split request failed to save data");
ice_release_nvm(&pf->hw);
return -EIO;
}
ice_release_nvm(&pf->hw);
NL_SET_ERR_MSG_MOD(extack, "Reboot required to finish port split");
return 0;
}
/**
* ice_devlink_port_split - .port_split devlink handler
* @devlink: devlink instance structure
* @port: devlink port structure
* @count: number of ports to split to
* @extack: extended netdev ack structure
*
* Callback for the devlink .port_split operation.
*
* Unfortunately, the devlink expression of available options is limited
* to just a number, so search for an FW port option which supports
* the specified number. As there could be multiple FW port options with
* the same port split count, allow switching between them. When the same
* port split count request is issued again, switch to the next FW port
* option with the same port split count.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_split(struct devlink *devlink, struct devlink_port *port,
unsigned int count, struct netlink_ext_ack *extack)
{
struct ice_aqc_get_port_options_elem options[ICE_AQC_PORT_OPT_MAX];
u8 i, j, active_idx, pending_idx, new_option;
struct ice_pf *pf = devlink_priv(devlink);
u8 option_count = ICE_AQC_PORT_OPT_MAX;
struct device *dev = ice_pf_to_dev(pf);
bool active_valid, pending_valid;
int status;
status = ice_aq_get_port_options(&pf->hw, options, &option_count,
0, true, &active_idx, &active_valid,
&pending_idx, &pending_valid);
if (status) {
dev_dbg(dev, "Couldn't read port split options, err = %d\n",
status);
NL_SET_ERR_MSG_MOD(extack, "Failed to get available port split options");
return -EIO;
}
new_option = ICE_AQC_PORT_OPT_MAX;
active_idx = pending_valid ? pending_idx : active_idx;
for (i = 1; i <= option_count; i++) {
/* In order to allow switching between FW port options with
* the same port split count, search for a new option starting
* from the active/pending option (with array wrap around).
*/
j = (active_idx + i) % option_count;
if (count == options[j].pmd) {
new_option = j;
break;
}
}
if (new_option == active_idx) {
dev_dbg(dev, "request to split: count: %u is already set and there are no other options\n",
count);
NL_SET_ERR_MSG_MOD(extack, "Requested split count is already set");
ice_devlink_port_options_print(pf);
return -EINVAL;
}
if (new_option == ICE_AQC_PORT_OPT_MAX) {
dev_dbg(dev, "request to split: count: %u not found\n", count);
NL_SET_ERR_MSG_MOD(extack, "Port split requested unsupported port config");
ice_devlink_port_options_print(pf);
return -EINVAL;
}
status = ice_devlink_aq_set_port_option(pf, new_option, extack);
if (status)
return status;
ice_devlink_port_options_print(pf);
return 0;
}
/**
* ice_devlink_port_unsplit - .port_unsplit devlink handler
* @devlink: devlink instance structure
* @port: devlink port structure
* @extack: extended netdev ack structure
*
* Callback for the devlink .port_unsplit operation.
* Calls ice_devlink_port_split with split count set to 1.
* There could be no FW option available with split count 1.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
struct netlink_ext_ack *extack)
{
return ice_devlink_port_split(devlink, port, 1, extack);
}
/**
* ice_devlink_set_port_split_options - Set port split options
* @pf: the PF to set port split options
* @attrs: devlink attributes
*
* Sets devlink port split options based on available FW port options
*/
static void
ice_devlink_set_port_split_options(struct ice_pf *pf,
struct devlink_port_attrs *attrs)
{
struct ice_aqc_get_port_options_elem options[ICE_AQC_PORT_OPT_MAX];
u8 i, active_idx, pending_idx, option_count = ICE_AQC_PORT_OPT_MAX;
bool active_valid, pending_valid;
int status;
status = ice_aq_get_port_options(&pf->hw, options, &option_count,
0, true, &active_idx, &active_valid,
&pending_idx, &pending_valid);
if (status) {
dev_dbg(ice_pf_to_dev(pf), "Couldn't read port split options, err = %d\n",
status);
return;
}
/* find the biggest available port split count */
for (i = 0; i < option_count; i++)
attrs->lanes = max_t(int, attrs->lanes, options[i].pmd);
attrs->splittable = attrs->lanes ? 1 : 0;
ice_active_port_option = active_idx;
}
static const struct devlink_port_ops ice_devlink_port_ops = {
.port_split = ice_devlink_port_split,
.port_unsplit = ice_devlink_port_unsplit,
};
/**
* ice_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
ice_devlink_set_switch_id(struct ice_pf *pf, struct netdev_phys_item_id *ppid)
{
struct pci_dev *pdev = pf->pdev;
u64 id;
id = pci_get_dsn(pdev);
ppid->id_len = sizeof(id);
put_unaligned_be64(id, &ppid->id);
}
/**
* ice_devlink_create_pf_port - Create a devlink port for this PF
* @pf: the PF to create a devlink port for
*
* Create and register a devlink_port for this PF.
* This function has to be called under devl_lock.
*
* Return: zero on success or an error code on failure.
*/
int ice_devlink_create_pf_port(struct ice_pf *pf)
{
struct devlink_port_attrs attrs = {};
struct devlink_port *devlink_port;
struct devlink *devlink;
struct ice_vsi *vsi;
struct device *dev;
int err;
devlink = priv_to_devlink(pf);
dev = ice_pf_to_dev(pf);
devlink_port = &pf->devlink_port;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return -EIO;
attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
attrs.phys.port_number = pf->hw.pf_id;
/* As FW supports only port split options for whole device,
* set port split options only for first PF.
*/
if (pf->hw.pf_id == 0)
ice_devlink_set_port_split_options(pf, &attrs);
ice_devlink_set_switch_id(pf, &attrs.switch_id);
devlink_port_attrs_set(devlink_port, &attrs);
err = devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
&ice_devlink_port_ops);
if (err) {
dev_err(dev, "Failed to create devlink port for PF %d, error %d\n",
pf->hw.pf_id, err);
return err;
}
return 0;
}
/**
* ice_devlink_destroy_pf_port - Destroy the devlink_port for this PF
* @pf: the PF to cleanup
*
* Unregisters the devlink_port structure associated with this PF.
* This function has to be called under devl_lock.
*/
void ice_devlink_destroy_pf_port(struct ice_pf *pf)
{
devl_port_unregister(&pf->devlink_port);
}
/**
* ice_devlink_port_get_vf_fn_mac - .port_fn_hw_addr_get devlink handler
* @port: devlink port structure
* @hw_addr: MAC address of the port
* @hw_addr_len: length of MAC address
* @extack: extended netdev ack structure
*
* Callback for the devlink .port_fn_hw_addr_get operation
* Return: zero on success or an error code on failure.
*/
static int ice_devlink_port_get_vf_fn_mac(struct devlink_port *port,
u8 *hw_addr, int *hw_addr_len,
struct netlink_ext_ack *extack)
{
struct ice_vf *vf = container_of(port, struct ice_vf, devlink_port);
ether_addr_copy(hw_addr, vf->dev_lan_addr);
*hw_addr_len = ETH_ALEN;
return 0;
}
/**
* ice_devlink_port_set_vf_fn_mac - .port_fn_hw_addr_set devlink handler
* @port: devlink port structure
* @hw_addr: MAC address of the port
* @hw_addr_len: length of MAC address
* @extack: extended netdev ack structure
*
* Callback for the devlink .port_fn_hw_addr_set operation
* Return: zero on success or an error code on failure.
*/
static int ice_devlink_port_set_vf_fn_mac(struct devlink_port *port,
const u8 *hw_addr,
int hw_addr_len,
struct netlink_ext_ack *extack)
{
struct devlink_port_attrs *attrs = &port->attrs;
struct devlink_port_pci_vf_attrs *pci_vf;
struct devlink *devlink = port->devlink;
struct ice_pf *pf;
u16 vf_id;
pf = devlink_priv(devlink);
pci_vf = &attrs->pci_vf;
vf_id = pci_vf->vf;
return __ice_set_vf_mac(pf, vf_id, hw_addr);
}
static const struct devlink_port_ops ice_devlink_vf_port_ops = {
.port_fn_hw_addr_get = ice_devlink_port_get_vf_fn_mac,
.port_fn_hw_addr_set = ice_devlink_port_set_vf_fn_mac,
};
/**
* ice_devlink_create_vf_port - Create a devlink port for this VF
* @vf: the VF to create a port for
*
* Create and register a devlink_port for this VF.
*
* Return: zero on success or an error code on failure.
*/
int ice_devlink_create_vf_port(struct ice_vf *vf)
{
struct devlink_port_attrs attrs = {};
struct devlink_port *devlink_port;
struct devlink *devlink;
struct ice_vsi *vsi;
struct device *dev;
struct ice_pf *pf;
int err;
pf = vf->pf;
dev = ice_pf_to_dev(pf);
devlink_port = &vf->devlink_port;
vsi = ice_get_vf_vsi(vf);
if (!vsi)
return -EINVAL;
attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
attrs.pci_vf.pf = pf->hw.pf_id;
attrs.pci_vf.vf = vf->vf_id;
ice_devlink_set_switch_id(pf, &attrs.switch_id);
devlink_port_attrs_set(devlink_port, &attrs);
devlink = priv_to_devlink(pf);
err = devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
&ice_devlink_vf_port_ops);
if (err) {
dev_err(dev, "Failed to create devlink port for VF %d, error %d\n",
vf->vf_id, err);
return err;
}
return 0;
}
/**
* ice_devlink_destroy_vf_port - Destroy the devlink_port for this VF
* @vf: the VF to cleanup
*
* Unregisters the devlink_port structure associated with this VF.
*/
void ice_devlink_destroy_vf_port(struct ice_vf *vf)
{
devl_rate_leaf_destroy(&vf->devlink_port);
devl_port_unregister(&vf->devlink_port);
}
/**
* ice_devlink_create_sf_dev_port - Register virtual port for a subfunction
* @sf_dev: the subfunction device to create a devlink port for
*
* Register virtual flavour devlink port for the subfunction auxiliary device
* created after activating a dynamically added devlink port.
*
* Return: zero on success or an error code on failure.
*/
int ice_devlink_create_sf_dev_port(struct ice_sf_dev *sf_dev)
{
struct devlink_port_attrs attrs = {};
struct ice_dynamic_port *dyn_port;
struct devlink_port *devlink_port;
struct devlink *devlink;
struct ice_vsi *vsi;
dyn_port = sf_dev->dyn_port;
vsi = dyn_port->vsi;
devlink_port = &sf_dev->priv->devlink_port;
attrs.flavour = DEVLINK_PORT_FLAVOUR_VIRTUAL;
devlink_port_attrs_set(devlink_port, &attrs);
devlink = priv_to_devlink(sf_dev->priv);
return devl_port_register(devlink, devlink_port, vsi->idx);
}
/**
* ice_devlink_destroy_sf_dev_port - Destroy virtual port for a subfunction
* @sf_dev: the subfunction device to create a devlink port for
*
* Unregisters the virtual port associated with this subfunction.
*/
void ice_devlink_destroy_sf_dev_port(struct ice_sf_dev *sf_dev)
{
devl_port_unregister(&sf_dev->priv->devlink_port);
}
/**
* ice_activate_dynamic_port - Activate a dynamic port
* @dyn_port: dynamic port instance to activate
* @extack: extack for reporting error messages
*
* Activate the dynamic port based on its flavour.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_activate_dynamic_port(struct ice_dynamic_port *dyn_port,
struct netlink_ext_ack *extack)
{
int err;
if (dyn_port->active)
return 0;
err = ice_sf_eth_activate(dyn_port, extack);
if (err)
return err;
dyn_port->active = true;
return 0;
}
/**
* ice_deactivate_dynamic_port - Deactivate a dynamic port
* @dyn_port: dynamic port instance to deactivate
*
* Undo activation of a dynamic port.
*/
static void ice_deactivate_dynamic_port(struct ice_dynamic_port *dyn_port)
{
if (!dyn_port->active)
return;
ice_sf_eth_deactivate(dyn_port);
dyn_port->active = false;
}
/**
* ice_dealloc_dynamic_port - Deallocate and remove a dynamic port
* @dyn_port: dynamic port instance to deallocate
*
* Free resources associated with a dynamically added devlink port. Will
* deactivate the port if its currently active.
*/
static void ice_dealloc_dynamic_port(struct ice_dynamic_port *dyn_port)
{
struct devlink_port *devlink_port = &dyn_port->devlink_port;
struct ice_pf *pf = dyn_port->pf;
ice_deactivate_dynamic_port(dyn_port);
xa_erase(&pf->sf_nums, devlink_port->attrs.pci_sf.sf);
ice_eswitch_detach_sf(pf, dyn_port);
ice_vsi_free(dyn_port->vsi);
xa_erase(&pf->dyn_ports, dyn_port->vsi->idx);
kfree(dyn_port);
}
/**
* ice_dealloc_all_dynamic_ports - Deallocate all dynamic devlink ports
* @pf: pointer to the pf structure
*/
void ice_dealloc_all_dynamic_ports(struct ice_pf *pf)
{
struct ice_dynamic_port *dyn_port;
unsigned long index;
xa_for_each(&pf->dyn_ports, index, dyn_port)
ice_dealloc_dynamic_port(dyn_port);
}
/**
* ice_devlink_port_new_check_attr - Check that new port attributes are valid
* @pf: pointer to the PF structure
* @new_attr: the attributes for the new port
* @extack: extack for reporting error messages
*
* Check that the attributes for the new port are valid before continuing to
* allocate the devlink port.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_new_check_attr(struct ice_pf *pf,
const struct devlink_port_new_attrs *new_attr,
struct netlink_ext_ack *extack)
{
if (new_attr->flavour != DEVLINK_PORT_FLAVOUR_PCI_SF) {
NL_SET_ERR_MSG_MOD(extack, "Flavour other than pcisf is not supported");
return -EOPNOTSUPP;
}
if (new_attr->controller_valid) {
NL_SET_ERR_MSG_MOD(extack, "Setting controller is not supported");
return -EOPNOTSUPP;
}
if (new_attr->port_index_valid) {
NL_SET_ERR_MSG_MOD(extack, "Driver does not support user defined port index assignment");
return -EOPNOTSUPP;
}
if (new_attr->pfnum != pf->hw.pf_id) {
NL_SET_ERR_MSG_MOD(extack, "Incorrect pfnum supplied");
return -EINVAL;
}
if (!pci_msix_can_alloc_dyn(pf->pdev)) {
NL_SET_ERR_MSG_MOD(extack, "Dynamic MSIX-X interrupt allocation is not supported");
return -EOPNOTSUPP;
}
return 0;
}
/**
* ice_devlink_port_del - devlink handler for port delete
* @devlink: pointer to devlink
* @port: devlink port to be deleted
* @extack: pointer to extack
*
* Deletes devlink port and deallocates all resources associated with
* created subfunction.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_del(struct devlink *devlink, struct devlink_port *port,
struct netlink_ext_ack *extack)
{
struct ice_dynamic_port *dyn_port;
dyn_port = ice_devlink_port_to_dyn(port);
ice_dealloc_dynamic_port(dyn_port);
return 0;
}
/**
* ice_devlink_port_fn_hw_addr_set - devlink handler for mac address set
* @port: pointer to devlink port
* @hw_addr: hw address to set
* @hw_addr_len: hw address length
* @extack: extack for reporting error messages
*
* Sets mac address for the port, verifies arguments and copies address
* to the subfunction structure.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_fn_hw_addr_set(struct devlink_port *port, const u8 *hw_addr,
int hw_addr_len,
struct netlink_ext_ack *extack)
{
struct ice_dynamic_port *dyn_port;
dyn_port = ice_devlink_port_to_dyn(port);
if (dyn_port->attached) {
NL_SET_ERR_MSG_MOD(extack,
"Ethernet address can be change only in detached state");
return -EBUSY;
}
if (hw_addr_len != ETH_ALEN || !is_valid_ether_addr(hw_addr)) {
NL_SET_ERR_MSG_MOD(extack, "Invalid ethernet address");
return -EADDRNOTAVAIL;
}
ether_addr_copy(dyn_port->hw_addr, hw_addr);
return 0;
}
/**
* ice_devlink_port_fn_hw_addr_get - devlink handler for mac address get
* @port: pointer to devlink port
* @hw_addr: hw address to set
* @hw_addr_len: hw address length
* @extack: extack for reporting error messages
*
* Returns mac address for the port.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_fn_hw_addr_get(struct devlink_port *port, u8 *hw_addr,
int *hw_addr_len,
struct netlink_ext_ack *extack)
{
struct ice_dynamic_port *dyn_port;
dyn_port = ice_devlink_port_to_dyn(port);
ether_addr_copy(hw_addr, dyn_port->hw_addr);
*hw_addr_len = ETH_ALEN;
return 0;
}
/**
* ice_devlink_port_fn_state_set - devlink handler for port state set
* @port: pointer to devlink port
* @state: state to set
* @extack: extack for reporting error messages
*
* Activates or deactivates the port.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_fn_state_set(struct devlink_port *port,
enum devlink_port_fn_state state,
struct netlink_ext_ack *extack)
{
struct ice_dynamic_port *dyn_port;
dyn_port = ice_devlink_port_to_dyn(port);
switch (state) {
case DEVLINK_PORT_FN_STATE_ACTIVE:
return ice_activate_dynamic_port(dyn_port, extack);
case DEVLINK_PORT_FN_STATE_INACTIVE:
ice_deactivate_dynamic_port(dyn_port);
break;
}
return 0;
}
/**
* ice_devlink_port_fn_state_get - devlink handler for port state get
* @port: pointer to devlink port
* @state: admin configured state of the port
* @opstate: current port operational state
* @extack: extack for reporting error messages
*
* Gets port state.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_devlink_port_fn_state_get(struct devlink_port *port,
enum devlink_port_fn_state *state,
enum devlink_port_fn_opstate *opstate,
struct netlink_ext_ack *extack)
{
struct ice_dynamic_port *dyn_port;
dyn_port = ice_devlink_port_to_dyn(port);
if (dyn_port->active)
*state = DEVLINK_PORT_FN_STATE_ACTIVE;
else
*state = DEVLINK_PORT_FN_STATE_INACTIVE;
if (dyn_port->attached)
*opstate = DEVLINK_PORT_FN_OPSTATE_ATTACHED;
else
*opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED;
return 0;
}
static const struct devlink_port_ops ice_devlink_port_sf_ops = {
.port_del = ice_devlink_port_del,
.port_fn_hw_addr_get = ice_devlink_port_fn_hw_addr_get,
.port_fn_hw_addr_set = ice_devlink_port_fn_hw_addr_set,
.port_fn_state_get = ice_devlink_port_fn_state_get,
.port_fn_state_set = ice_devlink_port_fn_state_set,
};
/**
* ice_reserve_sf_num - Reserve a subfunction number for this port
* @pf: pointer to the pf structure
* @new_attr: devlink port attributes requested
* @extack: extack for reporting error messages
* @sfnum: on success, the sf number reserved
*
* Reserve a subfunction number for this port. Only called for
* DEVLINK_PORT_FLAVOUR_PCI_SF ports.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_reserve_sf_num(struct ice_pf *pf,
const struct devlink_port_new_attrs *new_attr,
struct netlink_ext_ack *extack, u32 *sfnum)
{
int err;
/* If user didn't request an explicit number, pick one */
if (!new_attr->sfnum_valid)
return xa_alloc(&pf->sf_nums, sfnum, NULL, xa_limit_32b,
GFP_KERNEL);
/* Otherwise, check and use the number provided */
err = xa_insert(&pf->sf_nums, new_attr->sfnum, NULL, GFP_KERNEL);
if (err) {
if (err == -EBUSY)
NL_SET_ERR_MSG_MOD(extack, "Subfunction with given sfnum already exists");
return err;
}
*sfnum = new_attr->sfnum;
return 0;
}
/**
* ice_devlink_create_sf_port - Register PCI subfunction devlink port
* @dyn_port: the dynamic port instance structure for this subfunction
*
* Register PCI subfunction flavour devlink port for a dynamically added
* subfunction port.
*
* Return: zero on success or an error code on failure.
*/
int ice_devlink_create_sf_port(struct ice_dynamic_port *dyn_port)
{
struct devlink_port_attrs attrs = {};
struct devlink_port *devlink_port;
struct devlink *devlink;
struct ice_vsi *vsi;
struct ice_pf *pf;
vsi = dyn_port->vsi;
pf = dyn_port->pf;
devlink_port = &dyn_port->devlink_port;
attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_SF;
attrs.pci_sf.pf = pf->hw.pf_id;
attrs.pci_sf.sf = dyn_port->sfnum;
devlink_port_attrs_set(devlink_port, &attrs);
devlink = priv_to_devlink(pf);
return devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
&ice_devlink_port_sf_ops);
}
/**
* ice_devlink_destroy_sf_port - Destroy the devlink_port for this SF
* @dyn_port: the dynamic port instance structure for this subfunction
*
* Unregisters the devlink_port structure associated with this SF.
*/
void ice_devlink_destroy_sf_port(struct ice_dynamic_port *dyn_port)
{
devl_rate_leaf_destroy(&dyn_port->devlink_port);
devl_port_unregister(&dyn_port->devlink_port);
}
/**
* ice_alloc_dynamic_port - Allocate new dynamic port
* @pf: pointer to the pf structure
* @new_attr: devlink port attributes requested
* @extack: extack for reporting error messages
* @devlink_port: index of newly created devlink port
*
* Allocate a new dynamic port instance and prepare it for configuration
* with devlink.
*
* Return: zero on success or an error code on failure.
*/
static int
ice_alloc_dynamic_port(struct ice_pf *pf,
const struct devlink_port_new_attrs *new_attr,
struct netlink_ext_ack *extack,
struct devlink_port **devlink_port)
{
struct ice_dynamic_port *dyn_port;
struct ice_vsi *vsi;
u32 sfnum;
int err;
err = ice_reserve_sf_num(pf, new_attr, extack, &sfnum);
if (err)
return err;
dyn_port = kzalloc(sizeof(*dyn_port), GFP_KERNEL);
if (!dyn_port) {
err = -ENOMEM;
goto unroll_reserve_sf_num;
}
vsi = ice_vsi_alloc(pf);
if (!vsi) {
NL_SET_ERR_MSG_MOD(extack, "Unable to allocate VSI");
err = -ENOMEM;
goto unroll_dyn_port_alloc;
}
dyn_port->vsi = vsi;
dyn_port->pf = pf;
dyn_port->sfnum = sfnum;
eth_random_addr(dyn_port->hw_addr);
err = xa_insert(&pf->dyn_ports, vsi->idx, dyn_port, GFP_KERNEL);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Port index reservation failed");
goto unroll_vsi_alloc;
}
err = ice_eswitch_attach_sf(pf, dyn_port);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to attach SF to eswitch");
goto unroll_xa_insert;
}
*devlink_port = &dyn_port->devlink_port;
return 0;
unroll_xa_insert:
xa_erase(&pf->dyn_ports, vsi->idx);
unroll_vsi_alloc:
ice_vsi_free(vsi);
unroll_dyn_port_alloc:
kfree(dyn_port);
unroll_reserve_sf_num:
xa_erase(&pf->sf_nums, sfnum);
return err;
}
/**
* ice_devlink_port_new - devlink handler for the new port
* @devlink: pointer to devlink
* @new_attr: pointer to the port new attributes
* @extack: extack for reporting error messages
* @devlink_port: pointer to a new port
*
* Creates new devlink port, checks new port attributes and reject
* any unsupported parameters, allocates new subfunction for that port.
*
* Return: zero on success or an error code on failure.
*/
int
ice_devlink_port_new(struct devlink *devlink,
const struct devlink_port_new_attrs *new_attr,
struct netlink_ext_ack *extack,
struct devlink_port **devlink_port)
{
struct ice_pf *pf = devlink_priv(devlink);
int err;
err = ice_devlink_port_new_check_attr(pf, new_attr, extack);
if (err)
return err;
return ice_alloc_dynamic_port(pf, new_attr, extack, devlink_port);
}
