// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/dcbnl.h>
#include <linux/inetdevice.h>
#include <linux/netlink.h>
#include <linux/jhash.h>
#include <linux/log2.h>
#include <net/switchdev.h>
#include <net/pkt_cls.h>
#include <net/netevent.h>
#include <net/addrconf.h>

#include "spectrum.h"
#include "pci.h"
#include "core.h"
#include "core_env.h"
#include "reg.h"
#include "port.h"
#include "trap.h"
#include "txheader.h"
#include "spectrum_cnt.h"
#include "spectrum_dpipe.h"
#include "spectrum_acl_flex_actions.h"
#include "spectrum_span.h"
#include "spectrum_ptp.h"
#include "spectrum_trap.h"
#include "../mlxfw/mlxfw.h"

#define MLXSW_SP1_FWREV_MAJOR 13
#define MLXSW_SP1_FWREV_MINOR 2007
#define MLXSW_SP1_FWREV_SUBMINOR 1168
#define MLXSW_SP1_FWREV_CAN_RESET_MINOR 1702

static const struct mlxsw_fw_rev mlxsw_sp1_fw_rev = {
        .major = MLXSW_SP1_FWREV_MAJOR,
        .minor = MLXSW_SP1_FWREV_MINOR,
        .subminor = MLXSW_SP1_FWREV_SUBMINOR,
        .can_reset_minor = MLXSW_SP1_FWREV_CAN_RESET_MINOR,
};

#define MLXSW_SP1_FW_FILENAME \
        "mellanox/mlxsw_spectrum-" __stringify(MLXSW_SP1_FWREV_MAJOR) \
        "." __stringify(MLXSW_SP1_FWREV_MINOR) \
        "." __stringify(MLXSW_SP1_FWREV_SUBMINOR) ".mfa2"

#define MLXSW_SP2_FWREV_MAJOR 29
#define MLXSW_SP2_FWREV_MINOR 2007
#define MLXSW_SP2_FWREV_SUBMINOR 1168

static const struct mlxsw_fw_rev mlxsw_sp2_fw_rev = {
        .major = MLXSW_SP2_FWREV_MAJOR,
        .minor = MLXSW_SP2_FWREV_MINOR,
        .subminor = MLXSW_SP2_FWREV_SUBMINOR,
};

#define MLXSW_SP2_FW_FILENAME \
        "mellanox/mlxsw_spectrum2-" __stringify(MLXSW_SP2_FWREV_MAJOR) \
        "." __stringify(MLXSW_SP2_FWREV_MINOR) \
        "." __stringify(MLXSW_SP2_FWREV_SUBMINOR) ".mfa2"

#define MLXSW_SP3_FWREV_MAJOR 30
#define MLXSW_SP3_FWREV_MINOR 2007
#define MLXSW_SP3_FWREV_SUBMINOR 1168

static const struct mlxsw_fw_rev mlxsw_sp3_fw_rev = {
        .major = MLXSW_SP3_FWREV_MAJOR,
        .minor = MLXSW_SP3_FWREV_MINOR,
        .subminor = MLXSW_SP3_FWREV_SUBMINOR,
};

#define MLXSW_SP3_FW_FILENAME \
        "mellanox/mlxsw_spectrum3-" __stringify(MLXSW_SP3_FWREV_MAJOR) \
        "." __stringify(MLXSW_SP3_FWREV_MINOR) \
        "." __stringify(MLXSW_SP3_FWREV_SUBMINOR) ".mfa2"

static const char mlxsw_sp1_driver_name[] = "mlxsw_spectrum";
static const char mlxsw_sp2_driver_name[] = "mlxsw_spectrum2";
static const char mlxsw_sp3_driver_name[] = "mlxsw_spectrum3";

static const unsigned char mlxsw_sp1_mac_mask[ETH_ALEN] = {
        0xff, 0xff, 0xff, 0xff, 0xfc, 0x00
};
static const unsigned char mlxsw_sp2_mac_mask[ETH_ALEN] = {
        0xff, 0xff, 0xff, 0xff, 0xf0, 0x00
};

/* tx_hdr_version
 * Tx header version.
 * Must be set to 1.
 */
MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);

/* tx_hdr_ctl
 * Packet control type.
 * 0 - Ethernet control (e.g. EMADs, LACP)
 * 1 - Ethernet data
 */
MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);

/* tx_hdr_proto
 * Packet protocol type. Must be set to 1 (Ethernet).
 */
MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);

/* tx_hdr_rx_is_router
 * Packet is sent from the router. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);

/* tx_hdr_fid_valid
 * Indicates if the 'fid' field is valid and should be used for
 * forwarding lookup. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);

/* tx_hdr_swid
 * Switch partition ID. Must be set to 0.
 */
MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);

/* tx_hdr_control_tclass
 * Indicates if the packet should use the control TClass and not one
 * of the data TClasses.
 */
MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);

/* tx_hdr_etclass
 * Egress TClass to be used on the egress device on the egress port.
 */
MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);

/* tx_hdr_port_mid
 * Destination local port for unicast packets.
 * Destination multicast ID for multicast packets.
 *
 * Control packets are directed to a specific egress port, while data
 * packets are transmitted through the CPU port (0) into the switch partition,
 * where forwarding rules are applied.
 */
MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);

/* tx_hdr_fid
 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 * Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);

/* tx_hdr_type
 * 0 - Data packets
 * 6 - Control packets
 */
MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);

struct mlxsw_sp_mlxfw_dev {
        struct mlxfw_dev mlxfw_dev;
        struct mlxsw_sp *mlxsw_sp;
};

static int mlxsw_sp_component_query(struct mlxfw_dev *mlxfw_dev,
                                    u16 component_index, u32 *p_max_size,
                                    u8 *p_align_bits, u16 *p_max_write_size)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcqi_pl[MLXSW_REG_MCQI_LEN];
        int err;

        mlxsw_reg_mcqi_pack(mcqi_pl, component_index);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcqi), mcqi_pl);
        if (err)
                return err;
        mlxsw_reg_mcqi_unpack(mcqi_pl, p_max_size, p_align_bits,
                              p_max_write_size);

        *p_align_bits = max_t(u8, *p_align_bits, 2);
        *p_max_write_size = min_t(u16, *p_max_write_size,
                                  MLXSW_REG_MCDA_MAX_DATA_LEN);
        return 0;
}

static int mlxsw_sp_fsm_lock(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];
        u8 control_state;
        int err;

        mlxsw_reg_mcc_pack(mcc_pl, 0, 0, 0, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
        if (err)
                return err;

        mlxsw_reg_mcc_unpack(mcc_pl, fwhandle, NULL, &control_state);
        if (control_state != MLXFW_FSM_STATE_IDLE)
                return -EBUSY;

        mlxsw_reg_mcc_pack(mcc_pl,
                           MLXSW_REG_MCC_INSTRUCTION_LOCK_UPDATE_HANDLE,
                           0, *fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_component_update(struct mlxfw_dev *mlxfw_dev,
                                         u32 fwhandle, u16 component_index,
                                         u32 component_size)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_UPDATE_COMPONENT,
                           component_index, fwhandle, component_size);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_block_download(struct mlxfw_dev *mlxfw_dev,
                                       u32 fwhandle, u8 *data, u16 size,
                                       u32 offset)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcda_pl[MLXSW_REG_MCDA_LEN];

        mlxsw_reg_mcda_pack(mcda_pl, fwhandle, offset, size, data);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcda), mcda_pl);
}

static int mlxsw_sp_fsm_component_verify(struct mlxfw_dev *mlxfw_dev,
                                         u32 fwhandle, u16 component_index)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_VERIFY_COMPONENT,
                           component_index, fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_activate(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_ACTIVATE, 0,
                           fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_query_state(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
                                    enum mlxfw_fsm_state *fsm_state,
                                    enum mlxfw_fsm_state_err *fsm_state_err)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];
        u8 control_state;
        u8 error_code;
        int err;

        mlxsw_reg_mcc_pack(mcc_pl, 0, 0, fwhandle, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
        if (err)
                return err;

        mlxsw_reg_mcc_unpack(mcc_pl, NULL, &error_code, &control_state);
        *fsm_state = control_state;
        *fsm_state_err = min_t(enum mlxfw_fsm_state_err, error_code,
                               MLXFW_FSM_STATE_ERR_MAX);
        return 0;
}

static void mlxsw_sp_fsm_cancel(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_CANCEL, 0,
                           fwhandle, 0);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static void mlxsw_sp_fsm_release(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl,
                           MLXSW_REG_MCC_INSTRUCTION_RELEASE_UPDATE_HANDLE, 0,
                           fwhandle, 0);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static const struct mlxfw_dev_ops mlxsw_sp_mlxfw_dev_ops = {
        .component_query        = mlxsw_sp_component_query,
        .fsm_lock               = mlxsw_sp_fsm_lock,
        .fsm_component_update   = mlxsw_sp_fsm_component_update,
        .fsm_block_download     = mlxsw_sp_fsm_block_download,
        .fsm_component_verify   = mlxsw_sp_fsm_component_verify,
        .fsm_activate           = mlxsw_sp_fsm_activate,
        .fsm_query_state        = mlxsw_sp_fsm_query_state,
        .fsm_cancel             = mlxsw_sp_fsm_cancel,
        .fsm_release            = mlxsw_sp_fsm_release,
};

static int mlxsw_sp_firmware_flash(struct mlxsw_sp *mlxsw_sp,
                                   const struct firmware *firmware,
                                   struct netlink_ext_ack *extack)
{
        struct mlxsw_sp_mlxfw_dev mlxsw_sp_mlxfw_dev = {
                .mlxfw_dev = {
                        .ops = &mlxsw_sp_mlxfw_dev_ops,
                        .psid = mlxsw_sp->bus_info->psid,
                        .psid_size = strlen(mlxsw_sp->bus_info->psid),
                        .devlink = priv_to_devlink(mlxsw_sp->core),
                },
                .mlxsw_sp = mlxsw_sp
        };
        int err;

        mlxsw_core_fw_flash_start(mlxsw_sp->core);
        err = mlxfw_firmware_flash(&mlxsw_sp_mlxfw_dev.mlxfw_dev,
                                   firmware, extack);
        mlxsw_core_fw_flash_end(mlxsw_sp->core);

        return err;
}

static int mlxsw_sp_fw_rev_validate(struct mlxsw_sp *mlxsw_sp)
{
        const struct mlxsw_fw_rev *rev = &mlxsw_sp->bus_info->fw_rev;
        const struct mlxsw_fw_rev *req_rev = mlxsw_sp->req_rev;
        const char *fw_filename = mlxsw_sp->fw_filename;
        union devlink_param_value value;
        const struct firmware *firmware;
        int err;

        /* Don't check if driver does not require it */
        if (!req_rev || !fw_filename)
                return 0;

        /* Don't check if devlink 'fw_load_policy' param is 'flash' */
        err = devlink_param_driverinit_value_get(priv_to_devlink(mlxsw_sp->core),
                                                 DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
                                                 &value);
        if (err)
                return err;
        if (value.vu8 == DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH)
                return 0;

        /* Validate driver & FW are compatible */
        if (rev->major != req_rev->major) {
                WARN(1, "Mismatch in major FW version [%d:%d] is never expected; Please contact support\n",
                     rev->major, req_rev->major);
                return -EINVAL;
        }
        if (mlxsw_core_fw_rev_minor_subminor_validate(rev, req_rev))
                return 0;

        dev_err(mlxsw_sp->bus_info->dev, "The firmware version %d.%d.%d is incompatible with the driver (required >= %d.%d.%d)\n",
                rev->major, rev->minor, rev->subminor, req_rev->major,
                req_rev->minor, req_rev->subminor);
        dev_info(mlxsw_sp->bus_info->dev, "Flashing firmware using file %s\n",
                 fw_filename);

        err = request_firmware_direct(&firmware, fw_filename,
                                      mlxsw_sp->bus_info->dev);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Could not request firmware file %s\n",
                        fw_filename);
                return err;
        }

        err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware, NULL);
        release_firmware(firmware);
        if (err)
                dev_err(mlxsw_sp->bus_info->dev, "Could not upgrade firmware\n");

        /* On FW flash success, tell the caller FW reset is needed
         * if current FW supports it.
         */
        if (rev->minor >= req_rev->can_reset_minor)
                return err ? err : -EAGAIN;
        else
                return 0;
}

static int mlxsw_sp_flash_update(struct mlxsw_core *mlxsw_core,
                                 const char *file_name, const char *component,
                                 struct netlink_ext_ack *extack)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
        const struct firmware *firmware;
        int err;

        if (component)
                return -EOPNOTSUPP;

        err = request_firmware_direct(&firmware, file_name,
                                      mlxsw_sp->bus_info->dev);
        if (err)
                return err;
        err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware, extack);
        release_firmware(firmware);

        return err;
}

int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp,
                              unsigned int counter_index, u64 *packets,
                              u64 *bytes)
{
        char mgpc_pl[MLXSW_REG_MGPC_LEN];
        int err;

        mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_NOP,
                            MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
        if (err)
                return err;
        if (packets)
                *packets = mlxsw_reg_mgpc_packet_counter_get(mgpc_pl);
        if (bytes)
                *bytes = mlxsw_reg_mgpc_byte_counter_get(mgpc_pl);
        return 0;
}

static int mlxsw_sp_flow_counter_clear(struct mlxsw_sp *mlxsw_sp,
                                       unsigned int counter_index)
{
        char mgpc_pl[MLXSW_REG_MGPC_LEN];

        mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_CLEAR,
                            MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
}

int mlxsw_sp_flow_counter_alloc(struct mlxsw_sp *mlxsw_sp,
                                unsigned int *p_counter_index)
{
        int err;

        err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                                     p_counter_index);
        if (err)
                return err;
        err = mlxsw_sp_flow_counter_clear(mlxsw_sp, *p_counter_index);
        if (err)
                goto err_counter_clear;
        return 0;

err_counter_clear:
        mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                              *p_counter_index);
        return err;
}

void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp,
                                unsigned int counter_index)
{
         mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                               counter_index);
}

static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
                                     const struct mlxsw_tx_info *tx_info)
{
        char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);

        memset(txhdr, 0, MLXSW_TXHDR_LEN);

        mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
        mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
        mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
        mlxsw_tx_hdr_swid_set(txhdr, 0);
        mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
        mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
        mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
}

enum mlxsw_reg_spms_state mlxsw_sp_stp_spms_state(u8 state)
{
        switch (state) {
        case BR_STATE_FORWARDING:
                return MLXSW_REG_SPMS_STATE_FORWARDING;
        case BR_STATE_LEARNING:
                return MLXSW_REG_SPMS_STATE_LEARNING;
        case BR_STATE_LISTENING:
        case BR_STATE_DISABLED:
        case BR_STATE_BLOCKING:
                return MLXSW_REG_SPMS_STATE_DISCARDING;
        default:
                BUG();
        }
}

int mlxsw_sp_port_vid_stp_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
                              u8 state)
{
        enum mlxsw_reg_spms_state spms_state = mlxsw_sp_stp_spms_state(state);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char *spms_pl;
        int err;

        spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
        if (!spms_pl)
                return -ENOMEM;
        mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);

        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
        kfree(spms_pl);
        return err;
}

static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
{
        char spad_pl[MLXSW_REG_SPAD_LEN] = {0};
        int err;

        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
        if (err)
                return err;
        mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
        return 0;
}

int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                   bool is_up)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char paos_pl[MLXSW_REG_PAOS_LEN];

        mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
                            is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
                            MLXSW_PORT_ADMIN_STATUS_DOWN);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
}

static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                      unsigned char *addr)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char ppad_pl[MLXSW_REG_PPAD_LEN];

        mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
        mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
}

static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        unsigned char *addr = mlxsw_sp_port->dev->dev_addr;

        ether_addr_copy(addr, mlxsw_sp->base_mac);
        addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
        return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
}

static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmtu_pl[MLXSW_REG_PMTU_LEN];
        int max_mtu;
        int err;

        mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
        mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
        if (err)
                return err;
        max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);

        if (mtu > max_mtu)
                return -EINVAL;

        mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
}

static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pspa_pl[MLXSW_REG_PSPA_LEN];

        mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
}

int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port, bool enable)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char svpe_pl[MLXSW_REG_SVPE_LEN];

        mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
}

int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
                                   bool learn_enable)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char *spvmlr_pl;
        int err;

        spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
        if (!spvmlr_pl)
                return -ENOMEM;
        mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
                              learn_enable);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
        kfree(spvmlr_pl);
        return err;
}

static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    u16 vid)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char spvid_pl[MLXSW_REG_SPVID_LEN];

        mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
}

static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                            bool allow)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char spaft_pl[MLXSW_REG_SPAFT_LEN];

        mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
}

int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
        int err;

        if (!vid) {
                err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
                if (err)
                        return err;
        } else {
                err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
                if (err)
                        return err;
                err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, true);
                if (err)
                        goto err_port_allow_untagged_set;
        }

        mlxsw_sp_port->pvid = vid;
        return 0;

err_port_allow_untagged_set:
        __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
        return err;
}

static int
mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char sspr_pl[MLXSW_REG_SSPR_LEN];

        mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
}

static int
mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                              struct mlxsw_sp_port_mapping *port_mapping)
{
        char pmlp_pl[MLXSW_REG_PMLP_LEN];
        bool separate_rxtx;
        u8 module;
        u8 width;
        int err;
        int i;

        mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
        if (err)
                return err;
        module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
        width = mlxsw_reg_pmlp_width_get(pmlp_pl);
        separate_rxtx = mlxsw_reg_pmlp_rxtx_get(pmlp_pl);

        if (width && !is_power_of_2(width)) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: width value is not power of 2\n",
                        local_port);
                return -EINVAL;
        }

        for (i = 0; i < width; i++) {
                if (mlxsw_reg_pmlp_module_get(pmlp_pl, i) != module) {
                        dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: contains multiple modules\n",
                                local_port);
                        return -EINVAL;
                }
                if (separate_rxtx &&
                    mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) !=
                    mlxsw_reg_pmlp_rx_lane_get(pmlp_pl, i)) {
                        dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: TX and RX lane numbers are different\n",
                                local_port);
                        return -EINVAL;
                }
                if (mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) != i) {
                        dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: TX and RX lane numbers are not sequential\n",
                                local_port);
                        return -EINVAL;
                }
        }

        port_mapping->module = module;
        port_mapping->width = width;
        port_mapping->lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
        return 0;
}

static int mlxsw_sp_port_module_map(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp_port_mapping *port_mapping = &mlxsw_sp_port->mapping;
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmlp_pl[MLXSW_REG_PMLP_LEN];
        int i;

        mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_pmlp_width_set(pmlp_pl, port_mapping->width);
        for (i = 0; i < port_mapping->width; i++) {
                mlxsw_reg_pmlp_module_set(pmlp_pl, i, port_mapping->module);
                mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, port_mapping->lane + i); /* Rx & Tx */
        }

        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}

static int mlxsw_sp_port_module_unmap(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmlp_pl[MLXSW_REG_PMLP_LEN];

        mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}

static int mlxsw_sp_port_open(struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        int err;

        err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
        if (err)
                return err;
        netif_start_queue(dev);
        return 0;
}

static int mlxsw_sp_port_stop(struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        netif_stop_queue(dev);
        return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
}

static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
                                      struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
        const struct mlxsw_tx_info tx_info = {
                .local_port = mlxsw_sp_port->local_port,
                .is_emad = false,
        };
        u64 len;
        int err;

        if (skb_cow_head(skb, MLXSW_TXHDR_LEN)) {
                this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                dev_kfree_skb_any(skb);
                return NETDEV_TX_OK;
        }

        memset(skb->cb, 0, sizeof(struct mlxsw_skb_cb));

        if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
                return NETDEV_TX_BUSY;

        if (eth_skb_pad(skb)) {
                this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                return NETDEV_TX_OK;
        }

        mlxsw_sp_txhdr_construct(skb, &tx_info);
        /* TX header is consumed by HW on the way so we shouldn't count its
         * bytes as being sent.
         */
        len = skb->len - MLXSW_TXHDR_LEN;

        /* Due to a race we might fail here because of a full queue. In that
         * unlikely case we simply drop the packet.
         */
        err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);

        if (!err) {
                pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
                u64_stats_update_begin(&pcpu_stats->syncp);
                pcpu_stats->tx_packets++;
                pcpu_stats->tx_bytes += len;
                u64_stats_update_end(&pcpu_stats->syncp);
        } else {
                this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                dev_kfree_skb_any(skb);
        }
        return NETDEV_TX_OK;
}

static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}

static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct sockaddr *addr = p;
        int err;

        if (!is_valid_ether_addr(addr->sa_data))
                return -EADDRNOTAVAIL;

        err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
        if (err)
                return err;
        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
        return 0;
}

static u16 mlxsw_sp_pg_buf_threshold_get(const struct mlxsw_sp *mlxsw_sp,
                                         int mtu)
{
        return 2 * mlxsw_sp_bytes_cells(mlxsw_sp, mtu);
}

#define MLXSW_SP_CELL_FACTOR 2  /* 2 * cell_size / (IPG + cell_size + 1) */

static u16 mlxsw_sp_pfc_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
                                  u16 delay)
{
        delay = mlxsw_sp_bytes_cells(mlxsw_sp, DIV_ROUND_UP(delay,
                                                            BITS_PER_BYTE));
        return MLXSW_SP_CELL_FACTOR * delay + mlxsw_sp_bytes_cells(mlxsw_sp,
                                                                   mtu);
}

/* Maximum delay buffer needed in case of PAUSE frames, in bytes.
 * Assumes 100m cable and maximum MTU.
 */
#define MLXSW_SP_PAUSE_DELAY 58752

static u16 mlxsw_sp_pg_buf_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
                                     u16 delay, bool pfc, bool pause)
{
        if (pfc)
                return mlxsw_sp_pfc_delay_get(mlxsw_sp, mtu, delay);
        else if (pause)
                return mlxsw_sp_bytes_cells(mlxsw_sp, MLXSW_SP_PAUSE_DELAY);
        else
                return 0;
}

static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int index, u16 size, u16 thres,
                                 bool lossy)
{
        if (lossy)
                mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, index, size);
        else
                mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, index, size,
                                                    thres);
}

int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
                                 u8 *prio_tc, bool pause_en,
                                 struct ieee_pfc *my_pfc)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
        u16 delay = !!my_pfc ? my_pfc->delay : 0;
        char pbmc_pl[MLXSW_REG_PBMC_LEN];
        u32 taken_headroom_cells = 0;
        u32 max_headroom_cells;
        int i, j, err;

        max_headroom_cells = mlxsw_sp_sb_max_headroom_cells(mlxsw_sp);

        mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
        if (err)
                return err;

        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                bool configure = false;
                bool pfc = false;
                u16 thres_cells;
                u16 delay_cells;
                u16 total_cells;
                bool lossy;

                for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
                        if (prio_tc[j] == i) {
                                pfc = pfc_en & BIT(j);
                                configure = true;
                                break;
                        }
                }

                if (!configure)
                        continue;

                lossy = !(pfc || pause_en);
                thres_cells = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu);
                thres_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, thres_cells);
                delay_cells = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay,
                                                        pfc, pause_en);
                delay_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, delay_cells);
                total_cells = thres_cells + delay_cells;

                taken_headroom_cells += total_cells;
                if (taken_headroom_cells > max_headroom_cells)
                        return -ENOBUFS;

                mlxsw_sp_pg_buf_pack(pbmc_pl, i, total_cells,
                                     thres_cells, lossy);
        }

        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
}

int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
                               int mtu, bool pause_en)
{
        u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
        bool dcb_en = !!mlxsw_sp_port->dcb.ets;
        struct ieee_pfc *my_pfc;
        u8 *prio_tc;

        prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
        my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;

        return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
                                            pause_en, my_pfc);
}

static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
        int err;

        err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
        if (err)
                return err;
        err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
        if (err)

                goto err_span_port_mtu_update;
        err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
        if (err)
                goto err_port_mtu_set;
        dev->mtu = mtu;
        return 0;

err_port_mtu_set:
        mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
err_span_port_mtu_update:
        mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
        return err;
}

static int
mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
                             struct rtnl_link_stats64 *stats)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp_port_pcpu_stats *p;
        u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
        u32 tx_dropped = 0;
        unsigned int start;
        int i;

        for_each_possible_cpu(i) {
                p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
                do {
                        start = u64_stats_fetch_begin_irq(&p->syncp);
                        rx_packets      = p->rx_packets;
                        rx_bytes        = p->rx_bytes;
                        tx_packets      = p->tx_packets;
                        tx_bytes        = p->tx_bytes;
                } while (u64_stats_fetch_retry_irq(&p->syncp, start));

                stats->rx_packets       += rx_packets;
                stats->rx_bytes         += rx_bytes;
                stats->tx_packets       += tx_packets;
                stats->tx_bytes         += tx_bytes;
                /* tx_dropped is u32, updated without syncp protection. */
                tx_dropped      += p->tx_dropped;
        }
        stats->tx_dropped       = tx_dropped;
        return 0;
}

static bool mlxsw_sp_port_has_offload_stats(const struct net_device *dev, int attr_id)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                return true;
        }

        return false;
}

static int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
                                           void *sp)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                return mlxsw_sp_port_get_sw_stats64(dev, sp);
        }

        return -EINVAL;
}

int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
                                int prio, char *ppcnt_pl)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

        mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
        return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
}

static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
                                      struct rtnl_link_stats64 *stats)
{
        char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
        int err;

        err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
                                          0, ppcnt_pl);
        if (err)
                goto out;

        stats->tx_packets =
                mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
        stats->rx_packets =
                mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
        stats->tx_bytes =
                mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
        stats->rx_bytes =
                mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
        stats->multicast =
                mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);

        stats->rx_crc_errors =
                mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
        stats->rx_frame_errors =
                mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);

        stats->rx_length_errors = (
                mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
                mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
                mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));

        stats->rx_errors = (stats->rx_crc_errors +
                stats->rx_frame_errors + stats->rx_length_errors);

out:
        return err;
}

static void
mlxsw_sp_port_get_hw_xstats(struct net_device *dev,
                            struct mlxsw_sp_port_xstats *xstats)
{
        char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
        int err, i;

        err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_EXT_CNT, 0,
                                          ppcnt_pl);
        if (!err)
                xstats->ecn = mlxsw_reg_ppcnt_ecn_marked_get(ppcnt_pl);

        for (i = 0; i < TC_MAX_QUEUE; i++) {
                err = mlxsw_sp_port_get_stats_raw(dev,
                                                  MLXSW_REG_PPCNT_TC_CONG_TC,
                                                  i, ppcnt_pl);
                if (!err)
                        xstats->wred_drop[i] =
                                mlxsw_reg_ppcnt_wred_discard_get(ppcnt_pl);

                err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_TC_CNT,
                                                  i, ppcnt_pl);
                if (err)
                        continue;

                xstats->backlog[i] =
                        mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
                xstats->tail_drop[i] =
                        mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get(ppcnt_pl);
        }

        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_PRIO_CNT,
                                                  i, ppcnt_pl);
                if (err)
                        continue;

                xstats->tx_packets[i] = mlxsw_reg_ppcnt_tx_frames_get(ppcnt_pl);
                xstats->tx_bytes[i] = mlxsw_reg_ppcnt_tx_octets_get(ppcnt_pl);
        }
}

static void update_stats_cache(struct work_struct *work)
{
        struct mlxsw_sp_port *mlxsw_sp_port =
                container_of(work, struct mlxsw_sp_port,
                             periodic_hw_stats.update_dw.work);

        if (!netif_carrier_ok(mlxsw_sp_port->dev))
                /* Note: mlxsw_sp_port_down_wipe_counters() clears the cache as
                 * necessary when port goes down.
                 */
                goto out;

        mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
                                   &mlxsw_sp_port->periodic_hw_stats.stats);
        mlxsw_sp_port_get_hw_xstats(mlxsw_sp_port->dev,
                                    &mlxsw_sp_port->periodic_hw_stats.xstats);

out:
        mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw,
                               MLXSW_HW_STATS_UPDATE_TIME);
}

/* Return the stats from a cache that is updated periodically,
 * as this function might get called in an atomic context.
 */
static void
mlxsw_sp_port_get_stats64(struct net_device *dev,
                          struct rtnl_link_stats64 *stats)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        memcpy(stats, &mlxsw_sp_port->periodic_hw_stats.stats, sizeof(*stats));
}

static int __mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    u16 vid_begin, u16 vid_end,
                                    bool is_member, bool untagged)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char *spvm_pl;
        int err;

        spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
        if (!spvm_pl)
                return -ENOMEM;

        mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
                            vid_end, is_member, untagged);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
        kfree(spvm_pl);
        return err;
}

int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
                           u16 vid_end, bool is_member, bool untagged)
{
        u16 vid, vid_e;
        int err;

        for (vid = vid_begin; vid <= vid_end;
             vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
                vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
                            vid_end);

                err = __mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
                                               is_member, untagged);
                if (err)
                        return err;
        }

        return 0;
}

static void mlxsw_sp_port_vlan_flush(struct mlxsw_sp_port *mlxsw_sp_port,
                                     bool flush_default)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, *tmp;

        list_for_each_entry_safe(mlxsw_sp_port_vlan, tmp,
                                 &mlxsw_sp_port->vlans_list, list) {
                if (!flush_default &&
                    mlxsw_sp_port_vlan->vid == MLXSW_SP_DEFAULT_VID)
                        continue;
                mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);
        }
}

static void
mlxsw_sp_port_vlan_cleanup(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
        if (mlxsw_sp_port_vlan->bridge_port)
                mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
        else if (mlxsw_sp_port_vlan->fid)
                mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
}

struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
        bool untagged = vid == MLXSW_SP_DEFAULT_VID;
        int err;

        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
        if (mlxsw_sp_port_vlan)
                return ERR_PTR(-EEXIST);

        err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, untagged);
        if (err)
                return ERR_PTR(err);

        mlxsw_sp_port_vlan = kzalloc(sizeof(*mlxsw_sp_port_vlan), GFP_KERNEL);
        if (!mlxsw_sp_port_vlan) {
                err = -ENOMEM;
                goto err_port_vlan_alloc;
        }

        mlxsw_sp_port_vlan->mlxsw_sp_port = mlxsw_sp_port;
        mlxsw_sp_port_vlan->vid = vid;
        list_add(&mlxsw_sp_port_vlan->list, &mlxsw_sp_port->vlans_list);

        return mlxsw_sp_port_vlan;

err_port_vlan_alloc:
        mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
        return ERR_PTR(err);
}

void mlxsw_sp_port_vlan_destroy(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
        struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
        u16 vid = mlxsw_sp_port_vlan->vid;

        mlxsw_sp_port_vlan_cleanup(mlxsw_sp_port_vlan);
        list_del(&mlxsw_sp_port_vlan->list);
        kfree(mlxsw_sp_port_vlan);
        mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
}

static int mlxsw_sp_port_add_vid(struct net_device *dev,
                                 __be16 __always_unused proto, u16 vid)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        /* VLAN 0 is added to HW filter when device goes up, but it is
         * reserved in our case, so simply return.
         */
        if (!vid)
                return 0;

        return PTR_ERR_OR_ZERO(mlxsw_sp_port_vlan_create(mlxsw_sp_port, vid));
}

static int mlxsw_sp_port_kill_vid(struct net_device *dev,
                                  __be16 __always_unused proto, u16 vid)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;

        /* VLAN 0 is removed from HW filter when device goes down, but
         * it is reserved in our case, so simply return.
         */
        if (!vid)
                return 0;

        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
        if (!mlxsw_sp_port_vlan)
                return 0;
        mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);

        return 0;
}

static int mlxsw_sp_setup_tc_block(struct mlxsw_sp_port *mlxsw_sp_port,
                                   struct flow_block_offload *f)
{
        switch (f->binder_type) {
        case FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS:
                return mlxsw_sp_setup_tc_block_clsact(mlxsw_sp_port, f, true);
        case FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS:
                return mlxsw_sp_setup_tc_block_clsact(mlxsw_sp_port, f, false);
        case FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP:
                return mlxsw_sp_setup_tc_block_qevent_early_drop(mlxsw_sp_port, f);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlxsw_sp_setup_tc(struct net_device *dev, enum tc_setup_type type,
                             void *type_data)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        switch (type) {
        case TC_SETUP_BLOCK:
                return mlxsw_sp_setup_tc_block(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_RED:
                return mlxsw_sp_setup_tc_red(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_PRIO:
                return mlxsw_sp_setup_tc_prio(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_ETS:
                return mlxsw_sp_setup_tc_ets(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_TBF:
                return mlxsw_sp_setup_tc_tbf(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_FIFO:
                return mlxsw_sp_setup_tc_fifo(mlxsw_sp_port, type_data);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlxsw_sp_feature_hw_tc(struct net_device *dev, bool enable)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        if (!enable) {
                if (mlxsw_sp_flow_block_rule_count(mlxsw_sp_port->ing_flow_block) ||
                    mlxsw_sp_flow_block_rule_count(mlxsw_sp_port->eg_flow_block)) {
                        netdev_err(dev, "Active offloaded tc filters, can't turn hw_tc_offload off\n");
                        return -EINVAL;
                }
                mlxsw_sp_flow_block_disable_inc(mlxsw_sp_port->ing_flow_block);
                mlxsw_sp_flow_block_disable_inc(mlxsw_sp_port->eg_flow_block);
        } else {
                mlxsw_sp_flow_block_disable_dec(mlxsw_sp_port->ing_flow_block);
                mlxsw_sp_flow_block_disable_dec(mlxsw_sp_port->eg_flow_block);
        }
        return 0;
}

static int mlxsw_sp_feature_loopback(struct net_device *dev, bool enable)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        char pplr_pl[MLXSW_REG_PPLR_LEN];
        int err;

        if (netif_running(dev))
                mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);

        mlxsw_reg_pplr_pack(pplr_pl, mlxsw_sp_port->local_port, enable);
        err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pplr),
                              pplr_pl);

        if (netif_running(dev))
                mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);

        return err;
}

typedef int (*mlxsw_sp_feature_handler)(struct net_device *dev, bool enable);

static int mlxsw_sp_handle_feature(struct net_device *dev,
                                   netdev_features_t wanted_features,
                                   netdev_features_t feature,
                                   mlxsw_sp_feature_handler feature_handler)
{
        netdev_features_t changes = wanted_features ^ dev->features;
        bool enable = !!(wanted_features & feature);
        int err;

        if (!(changes & feature))
                return 0;

        err = feature_handler(dev, enable);
        if (err) {
                netdev_err(dev, "%s feature %pNF failed, err %d\n",
                           enable ? "Enable" : "Disable", &feature, err);
                return err;
        }

        if (enable)
                dev->features |= feature;
        else
                dev->features &= ~feature;

        return 0;
}
static int mlxsw_sp_set_features(struct net_device *dev,
                                 netdev_features_t features)
{
        netdev_features_t oper_features = dev->features;
        int err = 0;

        err |= mlxsw_sp_handle_feature(dev, features, NETIF_F_HW_TC,
                                       mlxsw_sp_feature_hw_tc);
        err |= mlxsw_sp_handle_feature(dev, features, NETIF_F_LOOPBACK,
                                       mlxsw_sp_feature_loopback);

        if (err) {
                dev->features = oper_features;
                return -EINVAL;
        }

        return 0;
}

static struct devlink_port *
mlxsw_sp_port_get_devlink_port(struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

        return mlxsw_core_port_devlink_port_get(mlxsw_sp->core,
                                                mlxsw_sp_port->local_port);
}

static int mlxsw_sp_port_hwtstamp_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                      struct ifreq *ifr)
{
        struct hwtstamp_config config;
        int err;

        if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
                return -EFAULT;

        err = mlxsw_sp_port->mlxsw_sp->ptp_ops->hwtstamp_set(mlxsw_sp_port,
                                                             &config);
        if (err)
                return err;

        if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
                return -EFAULT;

        return 0;
}

static int mlxsw_sp_port_hwtstamp_get(struct mlxsw_sp_port *mlxsw_sp_port,
                                      struct ifreq *ifr)
{
        struct hwtstamp_config config;
        int err;

        err = mlxsw_sp_port->mlxsw_sp->ptp_ops->hwtstamp_get(mlxsw_sp_port,
                                                             &config);
        if (err)
                return err;

        if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
                return -EFAULT;

        return 0;
}

static inline void mlxsw_sp_port_ptp_clear(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct hwtstamp_config config = {0};

        mlxsw_sp_port->mlxsw_sp->ptp_ops->hwtstamp_set(mlxsw_sp_port, &config);
}

static int
mlxsw_sp_port_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        switch (cmd) {
        case SIOCSHWTSTAMP:
                return mlxsw_sp_port_hwtstamp_set(mlxsw_sp_port, ifr);
        case SIOCGHWTSTAMP:
                return mlxsw_sp_port_hwtstamp_get(mlxsw_sp_port, ifr);
        default:
                return -EOPNOTSUPP;
        }
}

static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
        .ndo_open               = mlxsw_sp_port_open,
        .ndo_stop               = mlxsw_sp_port_stop,
        .ndo_start_xmit         = mlxsw_sp_port_xmit,
        .ndo_setup_tc           = mlxsw_sp_setup_tc,
        .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
        .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
        .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
        .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
        .ndo_has_offload_stats  = mlxsw_sp_port_has_offload_stats,
        .ndo_get_offload_stats  = mlxsw_sp_port_get_offload_stats,
        .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
        .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
        .ndo_set_features       = mlxsw_sp_set_features,
        .ndo_get_devlink_port   = mlxsw_sp_port_get_devlink_port,
        .ndo_do_ioctl           = mlxsw_sp_port_ioctl,
};

static int
mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        u32 eth_proto_cap, eth_proto_admin, eth_proto_oper;
        const struct mlxsw_sp_port_type_speed_ops *ops;
        char ptys_pl[MLXSW_REG_PTYS_LEN];
        int err;

        ops = mlxsw_sp->port_type_speed_ops;

        /* Set advertised speeds to supported speeds. */
        ops->reg_ptys_eth_pack(mlxsw_sp, ptys_pl, mlxsw_sp_port->local_port,
                               0, false);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
        if (err)
                return err;

        ops->reg_ptys_eth_unpack(mlxsw_sp, ptys_pl, &eth_proto_cap,
                                 &eth_proto_admin, &eth_proto_oper);
        ops->reg_ptys_eth_pack(mlxsw_sp, ptys_pl, mlxsw_sp_port->local_port,
                               eth_proto_cap, mlxsw_sp_port->link.autoneg);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
}

int mlxsw_sp_port_speed_get(struct mlxsw_sp_port *mlxsw_sp_port, u32 *speed)
{
        const struct mlxsw_sp_port_type_speed_ops *port_type_speed_ops;
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char ptys_pl[MLXSW_REG_PTYS_LEN];
        u32 eth_proto_oper;
        int err;

        port_type_speed_ops = mlxsw_sp->port_type_speed_ops;
        port_type_speed_ops->reg_ptys_eth_pack(mlxsw_sp, ptys_pl,
                                               mlxsw_sp_port->local_port, 0,
                                               false);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
        if (err)
                return err;
        port_type_speed_ops->reg_ptys_eth_unpack(mlxsw_sp, ptys_pl, NULL, NULL,
                                                 &eth_proto_oper);
        *speed = port_type_speed_ops->from_ptys_speed(mlxsw_sp, eth_proto_oper);
        return 0;
}

int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
                          enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
                          bool dwrr, u8 dwrr_weight)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qeec_pl[MLXSW_REG_QEEC_LEN];

        mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
                            next_index);
        mlxsw_reg_qeec_de_set(qeec_pl, true);
        mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
        mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                  enum mlxsw_reg_qeec_hr hr, u8 index,
                                  u8 next_index, u32 maxrate, u8 burst_size)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qeec_pl[MLXSW_REG_QEEC_LEN];

        mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
                            next_index);
        mlxsw_reg_qeec_mase_set(qeec_pl, true);
        mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
        mlxsw_reg_qeec_max_shaper_bs_set(qeec_pl, burst_size);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

static int mlxsw_sp_port_min_bw_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    enum mlxsw_reg_qeec_hr hr, u8 index,
                                    u8 next_index, u32 minrate)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qeec_pl[MLXSW_REG_QEEC_LEN];

        mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
                            next_index);
        mlxsw_reg_qeec_mise_set(qeec_pl, true);
        mlxsw_reg_qeec_min_shaper_rate_set(qeec_pl, minrate);

        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
                              u8 switch_prio, u8 tclass)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qtct_pl[MLXSW_REG_QTCT_LEN];

        mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
                            tclass);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
}

static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
        int err, i;

        /* Setup the elements hierarcy, so that each TC is linked to
         * one subgroup, which are all member in the same group.
         */
        err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                    MLXSW_REG_QEEC_HR_GROUP, 0, 0, false, 0);
        if (err)
                return err;
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HR_SUBGROUP, i,
                                            0, false, 0);
                if (err)
                        return err;
        }
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HR_TC, i, i,
                                            false, 0);
                if (err)
                        return err;

                err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HR_TC,
                                            i + 8, i,
                                            true, 100);
                if (err)
                        return err;
        }

        /* Make sure the max shaper is disabled in all hierarchies that support
         * it. Note that this disables ptps (PTP shaper), but that is intended
         * for the initial configuration.
         */
        err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HR_PORT, 0, 0,
                                            MLXSW_REG_QEEC_MAS_DIS, 0);
        if (err)
                return err;
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                                    MLXSW_REG_QEEC_HR_SUBGROUP,
                                                    i, 0,
                                                    MLXSW_REG_QEEC_MAS_DIS, 0);
                if (err)
                        return err;
        }
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                                    MLXSW_REG_QEEC_HR_TC,
                                                    i, i,
                                                    MLXSW_REG_QEEC_MAS_DIS, 0);
                if (err)
                        return err;

                err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                                    MLXSW_REG_QEEC_HR_TC,
                                                    i + 8, i,
                                                    MLXSW_REG_QEEC_MAS_DIS, 0);
                if (err)
                        return err;
        }

        /* Configure the min shaper for multicast TCs. */
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_min_bw_set(mlxsw_sp_port,
                                               MLXSW_REG_QEEC_HR_TC,
                                               i + 8, i,
                                               MLXSW_REG_QEEC_MIS_MIN);
                if (err)
                        return err;
        }

        /* Map all priorities to traffic class 0. */
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
                if (err)
                        return err;
        }

        return 0;
}

static int mlxsw_sp_port_tc_mc_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                        bool enable)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qtctm_pl[MLXSW_REG_QTCTM_LEN];

        mlxsw_reg_qtctm_pack(qtctm_pl, mlxsw_sp_port->local_port, enable);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtctm), qtctm_pl);
}

static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                                u8 split_base_local_port,
                                struct mlxsw_sp_port_mapping *port_mapping)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
        bool split = !!split_base_local_port;
        struct mlxsw_sp_port *mlxsw_sp_port;
        u32 lanes = port_mapping->width;
        struct net_device *dev;
        bool splittable;
        int err;

        splittable = lanes > 1 && !split;
        err = mlxsw_core_port_init(mlxsw_sp->core, local_port,
                                   port_mapping->module + 1, split,
                                   port_mapping->lane / lanes,
                                   splittable, lanes,
                                   mlxsw_sp->base_mac,
                                   sizeof(mlxsw_sp->base_mac));
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
                        local_port);
                return err;
        }

        dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
        if (!dev) {
                err = -ENOMEM;
                goto err_alloc_etherdev;
        }
        SET_NETDEV_DEV(dev, mlxsw_sp->bus_info->dev);
        dev_net_set(dev, mlxsw_sp_net(mlxsw_sp));
        mlxsw_sp_port = netdev_priv(dev);
        mlxsw_sp_port->dev = dev;
        mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
        mlxsw_sp_port->local_port = local_port;
        mlxsw_sp_port->pvid = MLXSW_SP_DEFAULT_VID;
        mlxsw_sp_port->split = split;
        mlxsw_sp_port->split_base_local_port = split_base_local_port;
        mlxsw_sp_port->mapping = *port_mapping;
        mlxsw_sp_port->link.autoneg = 1;
        INIT_LIST_HEAD(&mlxsw_sp_port->vlans_list);

        mlxsw_sp_port->pcpu_stats =
                netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
        if (!mlxsw_sp_port->pcpu_stats) {
                err = -ENOMEM;
                goto err_alloc_stats;
        }

        INIT_DELAYED_WORK(&mlxsw_sp_port->periodic_hw_stats.update_dw,
                          &update_stats_cache);

        dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
        dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;

        err = mlxsw_sp_port_module_map(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to map module\n",
                        mlxsw_sp_port->local_port);
                goto err_port_module_map;
        }

        err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
                        mlxsw_sp_port->local_port);
                goto err_port_swid_set;
        }

        err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
                        mlxsw_sp_port->local_port);
                goto err_dev_addr_init;
        }

        netif_carrier_off(dev);

        dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
                         NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
        dev->hw_features |= NETIF_F_HW_TC | NETIF_F_LOOPBACK;

        dev->min_mtu = 0;
        dev->max_mtu = ETH_MAX_MTU;

        /* Each packet needs to have a Tx header (metadata) on top all other
         * headers.
         */
        dev->needed_headroom = MLXSW_TXHDR_LEN;

        err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
                        mlxsw_sp_port->local_port);
                goto err_port_system_port_mapping_set;
        }

        err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
                        mlxsw_sp_port->local_port);
                goto err_port_speed_by_width_set;
        }

        err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
                        mlxsw_sp_port->local_port);
                goto err_port_mtu_set;
        }

        err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
        if (err)
                goto err_port_admin_status_set;

        err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
                        mlxsw_sp_port->local_port);
                goto err_port_buffers_init;
        }

        err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
                        mlxsw_sp_port->local_port);
                goto err_port_ets_init;
        }

        err = mlxsw_sp_port_tc_mc_mode_set(mlxsw_sp_port, true);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize TC MC mode\n",
                        mlxsw_sp_port->local_port);
                goto err_port_tc_mc_mode;
        }

        /* ETS and buffers must be initialized before DCB. */
        err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
                        mlxsw_sp_port->local_port);
                goto err_port_dcb_init;
        }

        err = mlxsw_sp_port_fids_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize FIDs\n",
                        mlxsw_sp_port->local_port);
                goto err_port_fids_init;
        }

        err = mlxsw_sp_tc_qdisc_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize TC qdiscs\n",
                        mlxsw_sp_port->local_port);
                goto err_port_qdiscs_init;
        }

        err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, 0, VLAN_N_VID - 1, false,
                                     false);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to clear VLAN filter\n",
                        mlxsw_sp_port->local_port);
                goto err_port_vlan_clear;
        }

        err = mlxsw_sp_port_nve_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize NVE\n",
                        mlxsw_sp_port->local_port);
                goto err_port_nve_init;
        }

        err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, MLXSW_SP_DEFAULT_VID);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set PVID\n",
                        mlxsw_sp_port->local_port);
                goto err_port_pvid_set;
        }

        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_create(mlxsw_sp_port,
                                                       MLXSW_SP_DEFAULT_VID);
        if (IS_ERR(mlxsw_sp_port_vlan)) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create VID 1\n",
                        mlxsw_sp_port->local_port);
                err = PTR_ERR(mlxsw_sp_port_vlan);
                goto err_port_vlan_create;
        }
        mlxsw_sp_port->default_vlan = mlxsw_sp_port_vlan;

        INIT_DELAYED_WORK(&mlxsw_sp_port->ptp.shaper_dw,
                          mlxsw_sp->ptp_ops->shaper_work);
        INIT_DELAYED_WORK(&mlxsw_sp_port->span.speed_update_dw,
                          mlxsw_sp_span_speed_update_work);

        mlxsw_sp->ports[local_port] = mlxsw_sp_port;
        err = register_netdev(dev);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
                        mlxsw_sp_port->local_port);
                goto err_register_netdev;
        }

        mlxsw_core_port_eth_set(mlxsw_sp->core, mlxsw_sp_port->local_port,
                                mlxsw_sp_port, dev);
        mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw, 0);
        return 0;

err_register_netdev:
        mlxsw_sp->ports[local_port] = NULL;
        mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);
err_port_vlan_create:
err_port_pvid_set:
        mlxsw_sp_port_nve_fini(mlxsw_sp_port);
err_port_nve_init:
err_port_vlan_clear:
        mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
err_port_qdiscs_init:
        mlxsw_sp_port_fids_fini(mlxsw_sp_port);
err_port_fids_init:
        mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
err_port_dcb_init:
        mlxsw_sp_port_tc_mc_mode_set(mlxsw_sp_port, false);
err_port_tc_mc_mode:
err_port_ets_init:
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
err_port_speed_by_width_set:
err_port_system_port_mapping_set:
err_dev_addr_init:
        mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
err_port_swid_set:
        mlxsw_sp_port_module_unmap(mlxsw_sp_port);
err_port_module_map:
        free_percpu(mlxsw_sp_port->pcpu_stats);
err_alloc_stats:
        free_netdev(dev);
err_alloc_etherdev:
        mlxsw_core_port_fini(mlxsw_sp->core, local_port);
        return err;
}

static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
        struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];

        cancel_delayed_work_sync(&mlxsw_sp_port->periodic_hw_stats.update_dw);
        cancel_delayed_work_sync(&mlxsw_sp_port->span.speed_update_dw);
        cancel_delayed_work_sync(&mlxsw_sp_port->ptp.shaper_dw);
        mlxsw_sp_port_ptp_clear(mlxsw_sp_port);
        mlxsw_core_port_clear(mlxsw_sp->core, local_port, mlxsw_sp);
        unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
        mlxsw_sp->ports[local_port] = NULL;
        mlxsw_sp_port_vlan_flush(mlxsw_sp_port, true);
        mlxsw_sp_port_nve_fini(mlxsw_sp_port);
        mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
        mlxsw_sp_port_fids_fini(mlxsw_sp_port);
        mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
        mlxsw_sp_port_tc_mc_mode_set(mlxsw_sp_port, false);

        mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
        mlxsw_sp_port_module_unmap(mlxsw_sp_port);
        free_percpu(mlxsw_sp_port->pcpu_stats);
        WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vlans_list));
        free_netdev(mlxsw_sp_port->dev);
        mlxsw_core_port_fini(mlxsw_sp->core, local_port);
}

static int mlxsw_sp_cpu_port_create(struct mlxsw_sp *mlxsw_sp)
{
        struct mlxsw_sp_port *mlxsw_sp_port;
        int err;

        mlxsw_sp_port = kzalloc(sizeof(*mlxsw_sp_port), GFP_KERNEL);
        if (!mlxsw_sp_port)
                return -ENOMEM;

        mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
        mlxsw_sp_port->local_port = MLXSW_PORT_CPU_PORT;

        err = mlxsw_core_cpu_port_init(mlxsw_sp->core,
                                       mlxsw_sp_port,
                                       mlxsw_sp->base_mac,
                                       sizeof(mlxsw_sp->base_mac));
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize core CPU port\n");
                goto err_core_cpu_port_init;
        }

        mlxsw_sp->ports[MLXSW_PORT_CPU_PORT] = mlxsw_sp_port;
        return 0;

err_core_cpu_port_init:
        kfree(mlxsw_sp_port);
        return err;
}

static void mlxsw_sp_cpu_port_remove(struct mlxsw_sp *mlxsw_sp)
{
        struct mlxsw_sp_port *mlxsw_sp_port =
                                mlxsw_sp->ports[MLXSW_PORT_CPU_PORT];

        mlxsw_core_cpu_port_fini(mlxsw_sp->core);
        mlxsw_sp->ports[MLXSW_PORT_CPU_PORT] = NULL;
        kfree(mlxsw_sp_port);
}

static bool mlxsw_sp_port_created(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
        return mlxsw_sp->ports[local_port] != NULL;
}

static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
{
        int i;

        for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++)
                if (mlxsw_sp_port_created(mlxsw_sp, i))
                        mlxsw_sp_port_remove(mlxsw_sp, i);
        mlxsw_sp_cpu_port_remove(mlxsw_sp);
        kfree(mlxsw_sp->ports);
        mlxsw_sp->ports = NULL;
}

static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
{
        unsigned int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
        struct mlxsw_sp_port_mapping *port_mapping;
        size_t alloc_size;
        int i;
        int err;

        alloc_size = sizeof(struct mlxsw_sp_port *) * max_ports;
        mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
        if (!mlxsw_sp->ports)
                return -ENOMEM;

        err = mlxsw_sp_cpu_port_create(mlxsw_sp);
        if (err)
                goto err_cpu_port_create;

        for (i = 1; i < max_ports; i++) {
                port_mapping = mlxsw_sp->port_mapping[i];
                if (!port_mapping)
                        continue;
                err = mlxsw_sp_port_create(mlxsw_sp, i, 0, port_mapping);
                if (err)
                        goto err_port_create;
        }
        return 0;

err_port_create:
        for (i--; i >= 1; i--)
                if (mlxsw_sp_port_created(mlxsw_sp, i))
                        mlxsw_sp_port_remove(mlxsw_sp, i);
        mlxsw_sp_cpu_port_remove(mlxsw_sp);
err_cpu_port_create:
        kfree(mlxsw_sp->ports);
        mlxsw_sp->ports = NULL;
        return err;
}

static int mlxsw_sp_port_module_info_init(struct mlxsw_sp *mlxsw_sp)
{
        unsigned int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
        struct mlxsw_sp_port_mapping port_mapping;
        int i;
        int err;

        mlxsw_sp->port_mapping = kcalloc(max_ports,
                                         sizeof(struct mlxsw_sp_port_mapping *),
                                         GFP_KERNEL);
        if (!mlxsw_sp->port_mapping)
                return -ENOMEM;

        for (i = 1; i < max_ports; i++) {
                err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &port_mapping);
                if (err)
                        goto err_port_module_info_get;
                if (!port_mapping.width)
                        continue;

                mlxsw_sp->port_mapping[i] = kmemdup(&port_mapping,
                                                    sizeof(port_mapping),
                                                    GFP_KERNEL);
                if (!mlxsw_sp->port_mapping[i]) {
                        err = -ENOMEM;
                        goto err_port_module_info_dup;
                }
        }
        return 0;

err_port_module_info_get:
err_port_module_info_dup:
        for (i--; i >= 1; i--)
                kfree(mlxsw_sp->port_mapping[i]);
        kfree(mlxsw_sp->port_mapping);
        return err;
}

static void mlxsw_sp_port_module_info_fini(struct mlxsw_sp *mlxsw_sp)
{
        int i;

        for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++)
                kfree(mlxsw_sp->port_mapping[i]);
        kfree(mlxsw_sp->port_mapping);
}

static u8 mlxsw_sp_cluster_base_port_get(u8 local_port, unsigned int max_width)
{
        u8 offset = (local_port - 1) % max_width;

        return local_port - offset;
}

static int
mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
                           struct mlxsw_sp_port_mapping *port_mapping,
                           unsigned int count, u8 offset)
{
        struct mlxsw_sp_port_mapping split_port_mapping;
        int err, i;

        split_port_mapping = *port_mapping;
        split_port_mapping.width /= count;
        for (i = 0; i < count; i++) {
                err = mlxsw_sp_port_create(mlxsw_sp, base_port + i * offset,
                                           base_port, &split_port_mapping);
                if (err)
                        goto err_port_create;
                split_port_mapping.lane += split_port_mapping.width;
        }

        return 0;

err_port_create:
        for (i--; i >= 0; i--)
                if (mlxsw_sp_port_created(mlxsw_sp, base_port + i * offset))
                        mlxsw_sp_port_remove(mlxsw_sp, base_port + i * offset);
        return err;
}

static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
                                         u8 base_port,
                                         unsigned int count, u8 offset)
{
        struct mlxsw_sp_port_mapping *port_mapping;
        int i;

        /* Go over original unsplit ports in the gap and recreate them. */
        for (i = 0; i < count * offset; i++) {
                port_mapping = mlxsw_sp->port_mapping[base_port + i];
                if (!port_mapping)
                        continue;
                mlxsw_sp_port_create(mlxsw_sp, base_port + i, 0, port_mapping);
        }
}

static int mlxsw_sp_local_ports_offset(struct mlxsw_core *mlxsw_core,
                                       unsigned int count,
                                       unsigned int max_width)
{
        enum mlxsw_res_id local_ports_in_x_res_id;
        int split_width = max_width / count;

        if (split_width == 1)
                local_ports_in_x_res_id = MLXSW_RES_ID_LOCAL_PORTS_IN_1X;
        else if (split_width == 2)
                local_ports_in_x_res_id = MLXSW_RES_ID_LOCAL_PORTS_IN_2X;
        else if (split_width == 4)
                local_ports_in_x_res_id = MLXSW_RES_ID_LOCAL_PORTS_IN_4X;
        else
                return -EINVAL;

        if (!mlxsw_core_res_valid(mlxsw_core, local_ports_in_x_res_id))
                return -EINVAL;
        return mlxsw_core_res_get(mlxsw_core, local_ports_in_x_res_id);
}

static struct mlxsw_sp_port *
mlxsw_sp_port_get_by_local_port(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
        if (mlxsw_sp->ports && mlxsw_sp->ports[local_port])
                return mlxsw_sp->ports[local_port];
        return NULL;
}

static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
                               unsigned int count,
                               struct netlink_ext_ack *extack)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
        struct mlxsw_sp_port_mapping port_mapping;
        struct mlxsw_sp_port *mlxsw_sp_port;
        int max_width;
        u8 base_port;
        int offset;
        int i;
        int err;

        mlxsw_sp_port = mlxsw_sp_port_get_by_local_port(mlxsw_sp, local_port);
        if (!mlxsw_sp_port) {
                dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
                        local_port);
                NL_SET_ERR_MSG_MOD(extack, "Port number does not exist");
                return -EINVAL;
        }

        max_width = mlxsw_core_module_max_width(mlxsw_core,
                                                mlxsw_sp_port->mapping.module);
        if (max_width < 0) {
                netdev_err(mlxsw_sp_port->dev, "Cannot get max width of port module\n");
                NL_SET_ERR_MSG_MOD(extack, "Cannot get max width of port module");
                return max_width;
        }

        /* Split port with non-max cannot be split. */
        if (mlxsw_sp_port->mapping.width != max_width) {
                netdev_err(mlxsw_sp_port->dev, "Port cannot be split\n");
                NL_SET_ERR_MSG_MOD(extack, "Port cannot be split");
                return -EINVAL;
        }

        offset = mlxsw_sp_local_ports_offset(mlxsw_core, count, max_width);
        if (offset < 0) {
                netdev_err(mlxsw_sp_port->dev, "Cannot obtain local port offset\n");
                NL_SET_ERR_MSG_MOD(extack, "Cannot obtain local port offset");
                return -EINVAL;
        }

        /* Only in case max split is being done, the local port and
         * base port may differ.
         */
        base_port = count == max_width ?
                    mlxsw_sp_cluster_base_port_get(local_port, max_width) :
                    local_port;

        for (i = 0; i < count * offset; i++) {
                /* Expect base port to exist and also the one in the middle in
                 * case of maximal split count.
                 */
                if (i == 0 || (count == max_width && i == count / 2))
                        continue;

                if (mlxsw_sp_port_created(mlxsw_sp, base_port + i)) {
                        netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
                        NL_SET_ERR_MSG_MOD(extack, "Invalid split configuration");
                        return -EINVAL;
                }
        }

        port_mapping = mlxsw_sp_port->mapping;

        for (i = 0; i < count; i++)
                if (mlxsw_sp_port_created(mlxsw_sp, base_port + i * offset))
                        mlxsw_sp_port_remove(mlxsw_sp, base_port + i * offset);

        err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, &port_mapping,
                                         count, offset);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
                goto err_port_split_create;
        }

        return 0;

err_port_split_create:
        mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count, offset);
        return err;
}

static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port,
                                 struct netlink_ext_ack *extack)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
        struct mlxsw_sp_port *mlxsw_sp_port;
        unsigned int count;
        int max_width;
        u8 base_port;
        int offset;
        int i;

        mlxsw_sp_port = mlxsw_sp_port_get_by_local_port(mlxsw_sp, local_port);
        if (!mlxsw_sp_port) {
                dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
                        local_port);
                NL_SET_ERR_MSG_MOD(extack, "Port number does not exist");
                return -EINVAL;
        }

        if (!mlxsw_sp_port->split) {
                netdev_err(mlxsw_sp_port->dev, "Port was not split\n");
                NL_SET_ERR_MSG_MOD(extack, "Port was not split");
                return -EINVAL;
        }

        max_width = mlxsw_core_module_max_width(mlxsw_core,
                                                mlxsw_sp_port->mapping.module);
        if (max_width < 0) {
                netdev_err(mlxsw_sp_port->dev, "Cannot get max width of port module\n");
                NL_SET_ERR_MSG_MOD(extack, "Cannot get max width of port module");
                return max_width;
        }

        count = max_width / mlxsw_sp_port->mapping.width;

        offset = mlxsw_sp_local_ports_offset(mlxsw_core, count, max_width);
        if (WARN_ON(offset < 0)) {
                netdev_err(mlxsw_sp_port->dev, "Cannot obtain local port offset\n");
                NL_SET_ERR_MSG_MOD(extack, "Cannot obtain local port offset");
                return -EINVAL;
        }

        base_port = mlxsw_sp_port->split_base_local_port;

        for (i = 0; i < count; i++)
                if (mlxsw_sp_port_created(mlxsw_sp, base_port + i * offset))
                        mlxsw_sp_port_remove(mlxsw_sp, base_port + i * offset);

        mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count, offset);

        return 0;
}

static void
mlxsw_sp_port_down_wipe_counters(struct mlxsw_sp_port *mlxsw_sp_port)
{
        int i;

        for (i = 0; i < TC_MAX_QUEUE; i++)
                mlxsw_sp_port->periodic_hw_stats.xstats.backlog[i] = 0;
}

static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
                                     char *pude_pl, void *priv)
{
        struct mlxsw_sp *mlxsw_sp = priv;
        struct mlxsw_sp_port *mlxsw_sp_port;
        enum mlxsw_reg_pude_oper_status status;
        u8 local_port;

        local_port = mlxsw_reg_pude_local_port_get(pude_pl);
        mlxsw_sp_port = mlxsw_sp->ports[local_port];
        if (!mlxsw_sp_port)
                return;

        status = mlxsw_reg_pude_oper_status_get(pude_pl);
        if (status == MLXSW_PORT_OPER_STATUS_UP) {
                netdev_info(mlxsw_sp_port->dev, "link up\n");
                netif_carrier_on(mlxsw_sp_port->dev);
                mlxsw_core_schedule_dw(&mlxsw_sp_port->ptp.shaper_dw, 0);
                mlxsw_core_schedule_dw(&mlxsw_sp_port->span.speed_update_dw, 0);
        } else {
                netdev_info(mlxsw_sp_port->dev, "link down\n");
                netif_carrier_off(mlxsw_sp_port->dev);
                mlxsw_sp_port_down_wipe_counters(mlxsw_sp_port);
        }
}

static void mlxsw_sp1_ptp_fifo_event_func(struct mlxsw_sp *mlxsw_sp,
                                          char *mtpptr_pl, bool ingress)
{
        u8 local_port;
        u8 num_rec;
        int i;

        local_port = mlxsw_reg_mtpptr_local_port_get(mtpptr_pl);
        num_rec = mlxsw_reg_mtpptr_num_rec_get(mtpptr_pl);
        for (i = 0; i < num_rec; i++) {
                u8 domain_number;
                u8 message_type;
                u16 sequence_id;
                u64 timestamp;

                mlxsw_reg_mtpptr_unpack(mtpptr_pl, i, &message_type,
                                        &domain_number, &sequence_id,
                                        &timestamp);
                mlxsw_sp1_ptp_got_timestamp(mlxsw_sp, ingress, local_port,
                                            message_type, domain_number,
                                            sequence_id, timestamp);
        }
}

static void mlxsw_sp1_ptp_ing_fifo_event_func(const struct mlxsw_reg_info *reg,
                                              char *mtpptr_pl, void *priv)
{
        struct mlxsw_sp *mlxsw_sp = priv;

        mlxsw_sp1_ptp_fifo_event_func(mlxsw_sp, mtpptr_pl, true);
}

static void mlxsw_sp1_ptp_egr_fifo_event_func(const struct mlxsw_reg_info *reg,
                                              char *mtpptr_pl, void *priv)
{
        struct mlxsw_sp *mlxsw_sp = priv;

        mlxsw_sp1_ptp_fifo_event_func(mlxsw_sp, mtpptr_pl, false);
}

void mlxsw_sp_rx_listener_no_mark_func(struct sk_buff *skb,
                                       u8 local_port, void *priv)
{
        struct mlxsw_sp *mlxsw_sp = priv;
        struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
        struct mlxsw_sp_port_pcpu_stats *pcpu_stats;

        if (unlikely(!mlxsw_sp_port)) {
                dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
                                     local_port);
                return;
        }

        skb->dev = mlxsw_sp_port->dev;

        pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
        u64_stats_update_begin(&pcpu_stats->syncp);
        pcpu_stats->rx_packets++;
        pcpu_stats->rx_bytes += skb->len;
        u64_stats_update_end(&pcpu_stats->syncp);

        skb->protocol = eth_type_trans(skb, skb->dev);
        netif_receive_skb(skb);
}

static void mlxsw_sp_rx_listener_mark_func(struct sk_buff *skb, u8 local_port,
                                           void *priv)
{
        skb->offload_fwd_mark = 1;
        return mlxsw_sp_rx_listener_no_mark_func(skb, local_port, priv);
}

static void mlxsw_sp_rx_listener_l3_mark_func(struct sk_buff *skb,
                                              u8 local_port, void *priv)
{
        skb->offload_l3_fwd_mark = 1;
        skb->offload_fwd_mark = 1;
        return mlxsw_sp_rx_listener_no_mark_func(skb, local_port, priv);
}

void mlxsw_sp_ptp_receive(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
                          u8 local_port)
{
        mlxsw_sp->ptp_ops->receive(mlxsw_sp, skb, local_port);
}

void mlxsw_sp_sample_receive(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
                             u8 local_port)
{
        struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
        struct mlxsw_sp_port_sample *sample;
        u32 size;

        if (unlikely(!mlxsw_sp_port)) {
                dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: sample skb received for non-existent port\n",
                                     local_port);
                goto out;
        }

        rcu_read_lock();
        sample = rcu_dereference(mlxsw_sp_port->sample);
        if (!sample)
                goto out_unlock;
        size = sample->truncate ? sample->trunc_size : skb->len;
        psample_sample_packet(sample->psample_group, skb, size,
                              mlxsw_sp_port->dev->ifindex, 0, sample->rate);
out_unlock:
        rcu_read_unlock();
out:
        consume_skb(skb);
}

#define MLXSW_SP_RXL_NO_MARK(_trap_id, _action, _trap_group, _is_ctrl)  \
        MLXSW_RXL(mlxsw_sp_rx_listener_no_mark_func, _trap_id, _action, \
                  _is_ctrl, SP_##_trap_group, DISCARD)

#define MLXSW_SP_RXL_MARK(_trap_id, _action, _trap_group, _is_ctrl)     \
        MLXSW_RXL(mlxsw_sp_rx_listener_mark_func, _trap_id, _action,    \
                _is_ctrl, SP_##_trap_group, DISCARD)

#define MLXSW_SP_RXL_L3_MARK(_trap_id, _action, _trap_group, _is_ctrl)  \
        MLXSW_RXL(mlxsw_sp_rx_listener_l3_mark_func, _trap_id, _action, \
                _is_ctrl, SP_##_trap_group, DISCARD)

#define MLXSW_SP_EVENTL(_func, _trap_id)                \
        MLXSW_EVENTL(_func, _trap_id, SP_EVENT)

static const struct mlxsw_listener mlxsw_sp_listener[] = {
        /* Events */
        MLXSW_SP_EVENTL(mlxsw_sp_pude_event_func, PUDE),
        /* L2 traps */
        MLXSW_SP_RXL_NO_MARK(FID_MISS, TRAP_TO_CPU, FID_MISS, false),
        /* L3 traps */
        MLXSW_SP_RXL_MARK(IPV6_UNSPECIFIED_ADDRESS, TRAP_TO_CPU, ROUTER_EXP,
                          false),
        MLXSW_SP_RXL_MARK(IPV6_LINK_LOCAL_SRC, TRAP_TO_CPU, ROUTER_EXP, false),
        MLXSW_SP_RXL_MARK(IPV6_MC_LINK_LOCAL_DEST, TRAP_TO_CPU, ROUTER_EXP,
                          false),
        MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_SIP_CLASS_E, FORWARD,
                             ROUTER_EXP, false),
        MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_MC_DMAC, FORWARD,
                             ROUTER_EXP, false),
        MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_SIP_DIP, FORWARD,
                             ROUTER_EXP, false),
        MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_DIP_LINK_LOCAL, FORWARD,
                             ROUTER_EXP, false),
        /* Multicast Router Traps */
        MLXSW_SP_RXL_MARK(ACL1, TRAP_TO_CPU, MULTICAST, false),
        MLXSW_SP_RXL_L3_MARK(ACL2, TRAP_TO_CPU, MULTICAST, false),
        /* NVE traps */
        MLXSW_SP_RXL_MARK(NVE_ENCAP_ARP, TRAP_TO_CPU, NEIGH_DISCOVERY, false),
};

static const struct mlxsw_listener mlxsw_sp1_listener[] = {
        /* Events */
        MLXSW_EVENTL(mlxsw_sp1_ptp_egr_fifo_event_func, PTP_EGR_FIFO, SP_PTP0),
        MLXSW_EVENTL(mlxsw_sp1_ptp_ing_fifo_event_func, PTP_ING_FIFO, SP_PTP0),
};

static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
        char qpcr_pl[MLXSW_REG_QPCR_LEN];
        enum mlxsw_reg_qpcr_ir_units ir_units;
        int max_cpu_policers;
        bool is_bytes;
        u8 burst_size;
        u32 rate;
        int i, err;

        if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_CPU_POLICERS))
                return -EIO;

        max_cpu_policers = MLXSW_CORE_RES_GET(mlxsw_core, MAX_CPU_POLICERS);

        ir_units = MLXSW_REG_QPCR_IR_UNITS_M;
        for (i = 0; i < max_cpu_policers; i++) {
                is_bytes = false;
                switch (i) {
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_ROUTER_EXP:
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_MULTICAST:
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_FID_MISS:
                        rate = 1024;
                        burst_size = 7;
                        break;
                default:
                        continue;
                }

                __set_bit(i, mlxsw_sp->trap->policers_usage);
                mlxsw_reg_qpcr_pack(qpcr_pl, i, ir_units, is_bytes, rate,
                                    burst_size);
                err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(qpcr), qpcr_pl);
                if (err)
                        return err;
        }

        return 0;
}

static int mlxsw_sp_trap_groups_set(struct mlxsw_core *mlxsw_core)
{
        char htgt_pl[MLXSW_REG_HTGT_LEN];
        enum mlxsw_reg_htgt_trap_group i;
        int max_cpu_policers;
        int max_trap_groups;
        u8 priority, tc;
        u16 policer_id;
        int err;

        if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_TRAP_GROUPS))
                return -EIO;

        max_trap_groups = MLXSW_CORE_RES_GET(mlxsw_core, MAX_TRAP_GROUPS);
        max_cpu_policers = MLXSW_CORE_RES_GET(mlxsw_core, MAX_CPU_POLICERS);

        for (i = 0; i < max_trap_groups; i++) {
                policer_id = i;
                switch (i) {
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_ROUTER_EXP:
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_MULTICAST:
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_FID_MISS:
                        priority = 1;
                        tc = 1;
                        break;
                case MLXSW_REG_HTGT_TRAP_GROUP_SP_EVENT:
                        priority = MLXSW_REG_HTGT_DEFAULT_PRIORITY;
                        tc = MLXSW_REG_HTGT_DEFAULT_TC;
                        policer_id = MLXSW_REG_HTGT_INVALID_POLICER;
                        break;
                default:
                        continue;
                }

                if (max_cpu_policers <= policer_id &&
                    policer_id != MLXSW_REG_HTGT_INVALID_POLICER)
                        return -EIO;

                mlxsw_reg_htgt_pack(htgt_pl, i, policer_id, priority, tc);
                err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
                if (err)
                        return err;
        }

        return 0;
}

static int mlxsw_sp_traps_register(struct mlxsw_sp *mlxsw_sp,
                                   const struct mlxsw_listener listeners[],
                                   size_t listeners_count)
{
        int i;
        int err;

        for (i = 0; i < listeners_count; i++) {
                err = mlxsw_core_trap_register(mlxsw_sp->core,
                                               &listeners[i],
                                               mlxsw_sp);
                if (err)
                        goto err_listener_register;

        }
        return 0;

err_listener_register:
        for (i--; i >= 0; i--) {
                mlxsw_core_trap_unregister(mlxsw_sp->core,
                                           &listeners[i],
                                           mlxsw_sp);
        }
        return err;
}

static void mlxsw_sp_traps_unregister(struct mlxsw_sp *mlxsw_sp,
                                      const struct mlxsw_listener listeners[],
                                      size_t listeners_count)
{
        int i;

        for (i = 0; i < listeners_count; i++) {
                mlxsw_core_trap_unregister(mlxsw_sp->core,
                                           &listeners[i],
                                           mlxsw_sp);
        }
}

static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
{
        struct mlxsw_sp_trap *trap;
        u64 max_policers;
        int err;

        if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_CPU_POLICERS))
                return -EIO;
        max_policers = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_CPU_POLICERS);
        trap = kzalloc(struct_size(trap, policers_usage,
                                   BITS_TO_LONGS(max_policers)), GFP_KERNEL);
        if (!trap)
                return -ENOMEM;
        trap->max_policers = max_policers;
        mlxsw_sp->trap = trap;

        err = mlxsw_sp_cpu_policers_set(mlxsw_sp->core);
        if (err)
                goto err_cpu_policers_set;

        err = mlxsw_sp_trap_groups_set(mlxsw_sp->core);
        if (err)
                goto err_trap_groups_set;

        err = mlxsw_sp_traps_register(mlxsw_sp, mlxsw_sp_listener,
                                      ARRAY_SIZE(mlxsw_sp_listener));
        if (err)
                goto err_traps_register;

        err = mlxsw_sp_traps_register(mlxsw_sp, mlxsw_sp->listeners,
                                      mlxsw_sp->listeners_count);
        if (err)
                goto err_extra_traps_init;

        return 0;

err_extra_traps_init:
        mlxsw_sp_traps_unregister(mlxsw_sp, mlxsw_sp_listener,
                                  ARRAY_SIZE(mlxsw_sp_listener));
err_traps_register:
err_trap_groups_set:
err_cpu_policers_set:
        kfree(trap);
        return err;
}

static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
{
        mlxsw_sp_traps_unregister(mlxsw_sp, mlxsw_sp->listeners,
                                  mlxsw_sp->listeners_count);
        mlxsw_sp_traps_unregister(mlxsw_sp, mlxsw_sp_listener,
                                  ARRAY_SIZE(mlxsw_sp_listener));
        kfree(mlxsw_sp->trap);
}

#define MLXSW_SP_LAG_SEED_INIT 0xcafecafe

static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
{
        char slcr_pl[MLXSW_REG_SLCR_LEN];
        u32 seed;
        int err;

        seed = jhash(mlxsw_sp->base_mac, sizeof(mlxsw_sp->base_mac),
                     MLXSW_SP_LAG_SEED_INIT);
        mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
                                     MLXSW_REG_SLCR_LAG_HASH_DMAC |
                                     MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
                                     MLXSW_REG_SLCR_LAG_HASH_VLANID |
                                     MLXSW_REG_SLCR_LAG_HASH_SIP |
                                     MLXSW_REG_SLCR_LAG_HASH_DIP |
                                     MLXSW_REG_SLCR_LAG_HASH_SPORT |
                                     MLXSW_REG_SLCR_LAG_HASH_DPORT |
                                     MLXSW_REG_SLCR_LAG_HASH_IPPROTO, seed);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
        if (err)
                return err;

        if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG) ||
            !MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG_MEMBERS))
                return -EIO;

        mlxsw_sp->lags = kcalloc(MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LAG),
                                 sizeof(struct mlxsw_sp_upper),
                                 GFP_KERNEL);
        if (!mlxsw_sp->lags)
                return -ENOMEM;

        return 0;
}

static void mlxsw_sp_lag_fini(struct mlxsw_sp *mlxsw_sp)
{
        kfree(mlxsw_sp->lags);
}

static int mlxsw_sp_basic_trap_groups_set(struct mlxsw_core *mlxsw_core)
{
        char htgt_pl[MLXSW_REG_HTGT_LEN];

        mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_EMAD,
                            MLXSW_REG_HTGT_INVALID_POLICER,
                            MLXSW_REG_HTGT_DEFAULT_PRIORITY,
                            MLXSW_REG_HTGT_DEFAULT_TC);
        return mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
}

static const struct mlxsw_sp_ptp_ops mlxsw_sp1_ptp_ops = {
        .clock_init     = mlxsw_sp1_ptp_clock_init,
        .clock_fini     = mlxsw_sp1_ptp_clock_fini,
        .init           = mlxsw_sp1_ptp_init,
        .fini           = mlxsw_sp1_ptp_fini,
        .receive        = mlxsw_sp1_ptp_receive,
        .transmitted    = mlxsw_sp1_ptp_transmitted,
        .hwtstamp_get   = mlxsw_sp1_ptp_hwtstamp_get,
        .hwtstamp_set   = mlxsw_sp1_ptp_hwtstamp_set,
        .shaper_work    = mlxsw_sp1_ptp_shaper_work,
        .get_ts_info    = mlxsw_sp1_ptp_get_ts_info,
        .get_stats_count = mlxsw_sp1_get_stats_count,
        .get_stats_strings = mlxsw_sp1_get_stats_strings,
        .get_stats      = mlxsw_sp1_get_stats,
};

static const struct mlxsw_sp_ptp_ops mlxsw_sp2_ptp_ops = {
        .clock_init     = mlxsw_sp2_ptp_clock_init,
        .clock_fini     = mlxsw_sp2_ptp_clock_fini,
        .init           = mlxsw_sp2_ptp_init,
        .fini           = mlxsw_sp2_ptp_fini,
        .receive        = mlxsw_sp2_ptp_receive,
        .transmitted    = mlxsw_sp2_ptp_transmitted,
        .hwtstamp_get   = mlxsw_sp2_ptp_hwtstamp_get,
        .hwtstamp_set   = mlxsw_sp2_ptp_hwtstamp_set,
        .shaper_work    = mlxsw_sp2_ptp_shaper_work,
        .get_ts_info    = mlxsw_sp2_ptp_get_ts_info,
        .get_stats_count = mlxsw_sp2_get_stats_count,
        .get_stats_strings = mlxsw_sp2_get_stats_strings,
        .get_stats      = mlxsw_sp2_get_stats,
};

static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
                                    unsigned long event, void *ptr);

static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
                         const struct mlxsw_bus_info *mlxsw_bus_info,
                         struct netlink_ext_ack *extack)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
        int err;

        mlxsw_sp->core = mlxsw_core;
        mlxsw_sp->bus_info = mlxsw_bus_info;

        err = mlxsw_sp_fw_rev_validate(mlxsw_sp);
        if (err)
                return err;

        mlxsw_core_emad_string_tlv_enable(mlxsw_core);

        err = mlxsw_sp_base_mac_get(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
                return err;
        }

        err = mlxsw_sp_kvdl_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize KVDL\n");
                return err;
        }

        err = mlxsw_sp_fids_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize FIDs\n");
                goto err_fids_init;
        }

        err = mlxsw_sp_policers_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize policers\n");
                goto err_policers_init;
        }

        err = mlxsw_sp_traps_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps\n");
                goto err_traps_init;
        }

        err = mlxsw_sp_devlink_traps_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize devlink traps\n");
                goto err_devlink_traps_init;
        }

        err = mlxsw_sp_buffers_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
                goto err_buffers_init;
        }

        err = mlxsw_sp_lag_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
                goto err_lag_init;
        }

        /* Initialize SPAN before router and switchdev, so that those components
         * can call mlxsw_sp_span_respin().
         */
        err = mlxsw_sp_span_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
                goto err_span_init;
        }

        err = mlxsw_sp_switchdev_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
                goto err_switchdev_init;
        }

        err = mlxsw_sp_counter_pool_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to init counter pool\n");
                goto err_counter_pool_init;
        }

        err = mlxsw_sp_afa_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL actions\n");
                goto err_afa_init;
        }

        err = mlxsw_sp_nve_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize NVE\n");
                goto err_nve_init;
        }

        err = mlxsw_sp_acl_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL\n");
                goto err_acl_init;
        }

        err = mlxsw_sp_router_init(mlxsw_sp, extack);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
                goto err_router_init;
        }

        if (mlxsw_sp->bus_info->read_frc_capable) {
                /* NULL is a valid return value from clock_init */
                mlxsw_sp->clock =
                        mlxsw_sp->ptp_ops->clock_init(mlxsw_sp,
                                                      mlxsw_sp->bus_info->dev);
                if (IS_ERR(mlxsw_sp->clock)) {
                        err = PTR_ERR(mlxsw_sp->clock);
                        dev_err(mlxsw_sp->bus_info->dev, "Failed to init ptp clock\n");
                        goto err_ptp_clock_init;
                }
        }

        if (mlxsw_sp->clock) {
                /* NULL is a valid return value from ptp_ops->init */
                mlxsw_sp->ptp_state = mlxsw_sp->ptp_ops->init(mlxsw_sp);
                if (IS_ERR(mlxsw_sp->ptp_state)) {
                        err = PTR_ERR(mlxsw_sp->ptp_state);
                        dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize PTP\n");
                        goto err_ptp_init;
                }
        }

        /* Initialize netdevice notifier after router and SPAN is initialized,
         * so that the event handler can use router structures and call SPAN
         * respin.
         */
        mlxsw_sp->netdevice_nb.notifier_call = mlxsw_sp_netdevice_event;
        err = register_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp),
                                              &mlxsw_sp->netdevice_nb);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to register netdev notifier\n");
                goto err_netdev_notifier;
        }

        err = mlxsw_sp_dpipe_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to init pipeline debug\n");
                goto err_dpipe_init;
        }

        err = mlxsw_sp_port_module_info_init(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to init port module info\n");
                goto err_port_module_info_init;
        }

        err = mlxsw_sp_ports_create(mlxsw_sp);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
                goto err_ports_create;
        }

        return 0;

err_ports_create:
        mlxsw_sp_port_module_info_fini(mlxsw_sp);
err_port_module_info_init:
        mlxsw_sp_dpipe_fini(mlxsw_sp);
err_dpipe_init:
        unregister_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp),
                                          &mlxsw_sp->netdevice_nb);
err_netdev_notifier:
        if (mlxsw_sp->clock)