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Message-ID: <20240401172421.1401696-8-anthony.l.nguyen@intel.com>
Date: Mon, 1 Apr 2024 10:24:17 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
netdev@...r.kernel.org
Cc: Piotr Raczynski <piotr.raczynski@...el.com>,
anthony.l.nguyen@...el.com,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Wojciech Drewek <wojciech.drewek@...el.com>,
Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
Simon Horman <horms@...nel.org>,
Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net-next 7/8] ice: move devlink port code to a separate file
From: Piotr Raczynski <piotr.raczynski@...el.com>
Keep devlink related code in a separate file. More devlink port code and
handlers will be added here for other port operations.
Remove no longer needed include of our devlink.h in ice_lib.c.
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
Signed-off-by: Piotr Raczynski <piotr.raczynski@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/ice/Makefile | 1 +
.../net/ethernet/intel/ice/devlink/devlink.c | 423 -----------------
.../ethernet/intel/ice/devlink/devlink_port.c | 430 ++++++++++++++++++
.../ethernet/intel/ice/devlink/devlink_port.h | 12 +
drivers/net/ethernet/intel/ice/ice_lib.c | 1 -
drivers/net/ethernet/intel/ice/ice_main.c | 1 +
drivers/net/ethernet/intel/ice/ice_repr.c | 1 +
7 files changed, 445 insertions(+), 424 deletions(-)
create mode 100644 drivers/net/ethernet/intel/ice/devlink/devlink_port.c
create mode 100644 drivers/net/ethernet/intel/ice/devlink/devlink_port.h
diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
index 736b1cae2033..03500e28ac99 100644
--- a/drivers/net/ethernet/intel/ice/Makefile
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -30,6 +30,7 @@ ice-y := ice_main.o \
ice_flow.o \
ice_idc.o \
devlink/devlink.o \
+ devlink/devlink_port.o \
ice_ddp.o \
ice_fw_update.o \
ice_lag.o \
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
index 82983eab52e0..926a14ac0d6f 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -10,8 +10,6 @@
#include "ice_fw_update.h"
#include "ice_dcb_lib.h"
-static int ice_active_port_option = -1;
-
/* context for devlink info version reporting */
struct ice_info_ctx {
char buf[128];
@@ -525,251 +523,6 @@ ice_devlink_reload_empr_finish(struct ice_pf *pf,
return 0;
}
-/**
- * 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_tear_down_devlink_rate_tree - removes devlink-rate exported tree
* @pf: pf struct
@@ -1548,23 +1301,6 @@ void ice_devlink_unregister(struct ice_pf *pf)
devlink_unregister(priv_to_devlink(pf));
}
-/**
- * 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);
-}
-
int ice_devlink_register_params(struct ice_pf *pf)
{
struct devlink *devlink = priv_to_devlink(pf);
@@ -1579,165 +1315,6 @@ void ice_devlink_unregister_params(struct ice_pf *pf)
ARRAY_SIZE(ice_devlink_params));
}
-/**
- * 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_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.bus.func;
-
- /* 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_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.bus.func;
- 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 = devlink_port_register(devlink, devlink_port, vsi->idx);
- 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);
- devlink_port_unregister(&vf->devlink_port);
-}
-
#define ICE_DEVLINK_READ_BLK_SIZE (1024 * 1024)
static const struct devlink_region_ops ice_nvm_region_ops;
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
new file mode 100644
index 000000000000..13e6790d3cae
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
@@ -0,0 +1,430 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2024, Intel Corporation. */
+
+#include <linux/vmalloc.h>
+
+#include "ice.h"
+#include "devlink.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.bus.func;
+
+ /* 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_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.bus.func;
+ 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 = devlink_port_register(devlink, devlink_port, vsi->idx);
+ 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);
+ devlink_port_unregister(&vf->devlink_port);
+}
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.h b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
new file mode 100644
index 000000000000..9223bcdb6444
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2024, Intel Corporation. */
+
+#ifndef _DEVLINK_PORT_H_
+#define _DEVLINK_PORT_H_
+
+int ice_devlink_create_pf_port(struct ice_pf *pf);
+void ice_devlink_destroy_pf_port(struct ice_pf *pf);
+int ice_devlink_create_vf_port(struct ice_vf *vf);
+void ice_devlink_destroy_vf_port(struct ice_vf *vf);
+
+#endif /* _DEVLINK_PORT_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 66eeaf345032..d06e7c82c433 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -7,7 +7,6 @@
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_dcb_lib.h"
-#include "devlink/devlink.h"
#include "ice_vsi_vlan_ops.h"
/**
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index eba1c18ea52e..1784382fe1ff 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -14,6 +14,7 @@
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "devlink/devlink.h"
+#include "devlink/devlink_port.h"
#include "ice_hwmon.h"
/* Including ice_trace.h with CREATE_TRACE_POINTS defined will generate the
* ice tracepoint functions. This must be done exactly once across the
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c
index 3b4ecbf0aa8e..b8009a301e39 100644
--- a/drivers/net/ethernet/intel/ice/ice_repr.c
+++ b/drivers/net/ethernet/intel/ice/ice_repr.c
@@ -4,6 +4,7 @@
#include "ice.h"
#include "ice_eswitch.h"
#include "devlink/devlink.h"
+#include "devlink/devlink_port.h"
#include "ice_sriov.h"
#include "ice_tc_lib.h"
#include "ice_dcb_lib.h"
--
2.41.0
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