// SPDX-License-Identifier: GPL-2.0-only
/*
 *  drivers/net/ethernet/freescale/gianfar_ethtool.c
 *
 *  Gianfar Ethernet Driver
 *  Ethtool support for Gianfar Enet
 *  Based on e1000 ethtool support
 *
 *  Author: Andy Fleming
 *  Maintainer: Kumar Gala
 *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
 *
 *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/net_tstamp.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/crc32.h>
#include <asm/types.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/sort.h>
#include <linux/if_vlan.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/fsl/ptp_qoriq.h>

#include "gianfar.h"

#define GFAR_MAX_COAL_USECS 0xffff
#define GFAR_MAX_COAL_FRAMES 0xff

static const char stat_gstrings[][ETH_GSTRING_LEN] = {
        /* extra stats */
        "rx-allocation-errors",
        "rx-large-frame-errors",
        "rx-short-frame-errors",
        "rx-non-octet-errors",
        "rx-crc-errors",
        "rx-overrun-errors",
        "rx-busy-errors",
        "rx-babbling-errors",
        "rx-truncated-frames",
        "ethernet-bus-error",
        "tx-babbling-errors",
        "tx-underrun-errors",
        "tx-timeout-errors",
        /* rmon stats */
        "tx-rx-64-frames",
        "tx-rx-65-127-frames",
        "tx-rx-128-255-frames",
        "tx-rx-256-511-frames",
        "tx-rx-512-1023-frames",
        "tx-rx-1024-1518-frames",
        "tx-rx-1519-1522-good-vlan",
        "rx-bytes",
        "rx-packets",
        "rx-fcs-errors",
        "receive-multicast-packet",
        "receive-broadcast-packet",
        "rx-control-frame-packets",
        "rx-pause-frame-packets",
        "rx-unknown-op-code",
        "rx-alignment-error",
        "rx-frame-length-error",
        "rx-code-error",
        "rx-carrier-sense-error",
        "rx-undersize-packets",
        "rx-oversize-packets",
        "rx-fragmented-frames",
        "rx-jabber-frames",
        "rx-dropped-frames",
        "tx-byte-counter",
        "tx-packets",
        "tx-multicast-packets",
        "tx-broadcast-packets",
        "tx-pause-control-frames",
        "tx-deferral-packets",
        "tx-excessive-deferral-packets",
        "tx-single-collision-packets",
        "tx-multiple-collision-packets",
        "tx-late-collision-packets",
        "tx-excessive-collision-packets",
        "tx-total-collision",
        "reserved",
        "tx-dropped-frames",
        "tx-jabber-frames",
        "tx-fcs-errors",
        "tx-control-frames",
        "tx-oversize-frames",
        "tx-undersize-frames",
        "tx-fragmented-frames",
};

/* Fill in a buffer with the strings which correspond to the
 * stats */
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
{
        struct gfar_private *priv = netdev_priv(dev);
        int i;

        if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
                for (i = 0; i < GFAR_STATS_LEN; i++)
                        ethtool_puts(&buf, stat_gstrings[i]);
        else
                for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
                        ethtool_puts(&buf, stat_gstrings[i]);
}

/* Fill in an array of 64-bit statistics from various sources.
 * This array will be appended to the end of the ethtool_stats
 * structure, and returned to user space
 */
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
                            u64 *buf)
{
        int i;
        struct gfar_private *priv = netdev_priv(dev);
        struct gfar __iomem *regs = priv->gfargrp[0].regs;
        atomic64_t *extra = (atomic64_t *)&priv->extra_stats;

        for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
                buf[i] = atomic64_read(&extra[i]);

        if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
                u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;

                for (; i < GFAR_STATS_LEN; i++, rmon++)
                        buf[i] = (u64) gfar_read(rmon);
        }
}

static int gfar_sset_count(struct net_device *dev, int sset)
{
        struct gfar_private *priv = netdev_priv(dev);

        switch (sset) {
        case ETH_SS_STATS:
                if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
                        return GFAR_STATS_LEN;
                else
                        return GFAR_EXTRA_STATS_LEN;
        default:
                return -EOPNOTSUPP;
        }
}

/* Fills in the drvinfo structure with some basic info */
static void gfar_gdrvinfo(struct net_device *dev,
                          struct ethtool_drvinfo *drvinfo)
{
        strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
}

/* Return the length of the register structure */
static int gfar_reglen(struct net_device *dev)
{
        return sizeof (struct gfar);
}

/* Return a dump of the GFAR register space */
static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
                          void *regbuf)
{
        int i;
        struct gfar_private *priv = netdev_priv(dev);
        u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
        u32 *buf = (u32 *) regbuf;

        for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
                buf[i] = gfar_read(&theregs[i]);
}

/* Convert microseconds to ethernet clock ticks, which changes
 * depending on what speed the controller is running at */
static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
                                     unsigned int usecs)
{
        struct net_device *ndev = priv->ndev;
        struct phy_device *phydev = ndev->phydev;
        unsigned int count;

        /* The timer is different, depending on the interface speed */
        switch (phydev->speed) {
        case SPEED_1000:
                count = GFAR_GBIT_TIME;
                break;
        case SPEED_100:
                count = GFAR_100_TIME;
                break;
        case SPEED_10:
        default:
                count = GFAR_10_TIME;
                break;
        }

        /* Make sure we return a number greater than 0
         * if usecs > 0 */
        return DIV_ROUND_UP(usecs * 1000, count);
}

/* Convert ethernet clock ticks to microseconds */
static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
                                     unsigned int ticks)
{
        struct net_device *ndev = priv->ndev;
        struct phy_device *phydev = ndev->phydev;
        unsigned int count;

        /* The timer is different, depending on the interface speed */
        switch (phydev->speed) {
        case SPEED_1000:
                count = GFAR_GBIT_TIME;
                break;
        case SPEED_100:
                count = GFAR_100_TIME;
                break;
        case SPEED_10:
        default:
                count = GFAR_10_TIME;
                break;
        }

        /* Make sure we return a number greater than 0 */
        /* if ticks is > 0 */
        return (ticks * count) / 1000;
}

/* Get the coalescing parameters, and put them in the cvals
 * structure.  */
static int gfar_gcoalesce(struct net_device *dev,
                          struct ethtool_coalesce *cvals,
                          struct kernel_ethtool_coalesce *kernel_coal,
                          struct netlink_ext_ack *extack)
{
        struct gfar_private *priv = netdev_priv(dev);
        struct gfar_priv_rx_q *rx_queue = NULL;
        struct gfar_priv_tx_q *tx_queue = NULL;
        unsigned long rxtime;
        unsigned long rxcount;
        unsigned long txtime;
        unsigned long txcount;

        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
                return -EOPNOTSUPP;

        if (!dev->phydev)
                return -ENODEV;

        rx_queue = priv->rx_queue[0];
        tx_queue = priv->tx_queue[0];

        rxtime  = get_ictt_value(rx_queue->rxic);
        rxcount = get_icft_value(rx_queue->rxic);
        txtime  = get_ictt_value(tx_queue->txic);
        txcount = get_icft_value(tx_queue->txic);
        cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
        cvals->rx_max_coalesced_frames = rxcount;

        cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
        cvals->tx_max_coalesced_frames = txcount;

        return 0;
}

/* Change the coalescing values.
 * Both cvals->*_usecs and cvals->*_frames have to be > 0
 * in order for coalescing to be active
 */
static int gfar_scoalesce(struct net_device *dev,
                          struct ethtool_coalesce *cvals,
                          struct kernel_ethtool_coalesce *kernel_coal,
                          struct netlink_ext_ack *extack)
{
        struct gfar_private *priv = netdev_priv(dev);
        int i, err = 0;

        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
                return -EOPNOTSUPP;

        if (!dev->phydev)
                return -ENODEV;

        /* Check the bounds of the values */
        if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
                netdev_info(dev, "Coalescing is limited to %d microseconds\n",
                            GFAR_MAX_COAL_USECS);
                return -EINVAL;
        }

        if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
                netdev_info(dev, "Coalescing is limited to %d frames\n",
                            GFAR_MAX_COAL_FRAMES);
                return -EINVAL;
        }

        /* Check the bounds of the values */
        if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
                netdev_info(dev, "Coalescing is limited to %d microseconds\n",
                            GFAR_MAX_COAL_USECS);
                return -EINVAL;
        }

        if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
                netdev_info(dev, "Coalescing is limited to %d frames\n",
                            GFAR_MAX_COAL_FRAMES);
                return -EINVAL;
        }

        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
                cpu_relax();

        /* Set up rx coalescing */
        if ((cvals->rx_coalesce_usecs == 0) ||
            (cvals->rx_max_coalesced_frames == 0)) {
                for (i = 0; i < priv->num_rx_queues; i++)
                        priv->rx_queue[i]->rxcoalescing = 0;
        } else {
                for (i = 0; i < priv->num_rx_queues; i++)
                        priv->rx_queue[i]->rxcoalescing = 1;
        }

        for (i = 0; i < priv->num_rx_queues; i++) {
                priv->rx_queue[i]->rxic = mk_ic_value(
                        cvals->rx_max_coalesced_frames,
                        gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
        }

        /* Set up tx coalescing */
        if ((cvals->tx_coalesce_usecs == 0) ||
            (cvals->tx_max_coalesced_frames == 0)) {
                for (i = 0; i < priv->num_tx_queues; i++)
                        priv->tx_queue[i]->txcoalescing = 0;
        } else {
                for (i = 0; i < priv->num_tx_queues; i++)
                        priv->tx_queue[i]->txcoalescing = 1;
        }

        for (i = 0; i < priv->num_tx_queues; i++) {
                priv->tx_queue[i]->txic = mk_ic_value(
                        cvals->tx_max_coalesced_frames,
                        gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
        }

        if (dev->flags & IFF_UP) {
                stop_gfar(dev);
                err = startup_gfar(dev);
        } else {
                gfar_mac_reset(priv);
        }

        clear_bit_unlock(GFAR_RESETTING, &priv->state);

        return err;
}

/* Fills in rvals with the current ring parameters.  Currently,
 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 * jumbo are ignored by the driver */
static void gfar_gringparam(struct net_device *dev,
                            struct ethtool_ringparam *rvals,
                            struct kernel_ethtool_ringparam *kernel_rvals,
                            struct netlink_ext_ack *extack)
{
        struct gfar_private *priv = netdev_priv(dev);
        struct gfar_priv_tx_q *tx_queue = NULL;
        struct gfar_priv_rx_q *rx_queue = NULL;

        tx_queue = priv->tx_queue[0];
        rx_queue = priv->rx_queue[0];

        rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
        rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
        rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
        rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;

        /* Values changeable by the user.  The valid values are
         * in the range 1 to the "*_max_pending" counterpart above.
         */
        rvals->rx_pending = rx_queue->rx_ring_size;
        rvals->rx_mini_pending = rx_queue->rx_ring_size;
        rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
        rvals->tx_pending = tx_queue->tx_ring_size;
}

/* Change the current ring parameters, stopping the controller if
 * necessary so that we don't mess things up while we're in motion.
 */
static int gfar_sringparam(struct net_device *dev,
                           struct ethtool_ringparam *rvals,
                           struct kernel_ethtool_ringparam *kernel_rvals,
                           struct netlink_ext_ack *extack)
{
        struct gfar_private *priv = netdev_priv(dev);
        int err = 0, i;

        if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
                return -EINVAL;

        if (!is_power_of_2(rvals->rx_pending)) {
                netdev_err(dev, "Ring sizes must be a power of 2\n");
                return -EINVAL;
        }

        if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
                return -EINVAL;

        if (!is_power_of_2(rvals->tx_pending)) {
                netdev_err(dev, "Ring sizes must be a power of 2\n");
                return -EINVAL;
        }

        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
                cpu_relax();

        if (dev->flags & IFF_UP)
                stop_gfar(dev);

        /* Change the sizes */
        for (i = 0; i < priv->num_rx_queues; i++)
                priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;

        for (i = 0; i < priv->num_tx_queues; i++)
                priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;

        /* Rebuild the rings with the new size */
        if (dev->flags & IFF_UP)
                err = startup_gfar(dev);

        clear_bit_unlock(GFAR_RESETTING, &priv->state);

        return err;
}

static void gfar_gpauseparam(struct net_device *dev,
                             struct ethtool_pauseparam *epause)
{
        struct gfar_private *priv = netdev_priv(dev);

        epause->autoneg = !!priv->pause_aneg_en;
        epause->rx_pause = !!priv->rx_pause_en;
        epause->tx_pause = !!priv->tx_pause_en;
}

static int gfar_spauseparam(struct net_device *dev,
                            struct ethtool_pauseparam *epause)
{
        struct gfar_private *priv = netdev_priv(dev);
        struct phy_device *phydev = dev->phydev;
        struct gfar __iomem *regs = priv->gfargrp[0].regs;

        if (!phydev)
                return -ENODEV;

        if (!phy_validate_pause(phydev, epause))
                return -EINVAL;

        priv->rx_pause_en = priv->tx_pause_en = 0;
        phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
        if (epause->rx_pause) {
                priv->rx_pause_en = 1;

                if (epause->tx_pause) {
                        priv->tx_pause_en = 1;
                }
        } else if (epause->tx_pause) {
                priv->tx_pause_en = 1;
        }

        if (epause->autoneg)
                priv->pause_aneg_en = 1;
        else
                priv->pause_aneg_en = 0;

        if (!epause->autoneg) {
                u32 tempval = gfar_read(&regs->maccfg1);

                tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);

                priv->tx_actual_en = 0;
                if (priv->tx_pause_en) {
                        priv->tx_actual_en = 1;
                        tempval |= MACCFG1_TX_FLOW;
                }

                if (priv->rx_pause_en)
                        tempval |= MACCFG1_RX_FLOW;
                gfar_write(&regs->maccfg1, tempval);
        }

        return 0;
}

int gfar_set_features(struct net_device *dev, netdev_features_t features)
{
        netdev_features_t changed = dev->features ^ features;
        struct gfar_private *priv = netdev_priv(dev);
        int err = 0;

        if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
                         NETIF_F_RXCSUM)))
                return 0;

        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
                cpu_relax();

        dev->features = features;

        if (dev->flags & IFF_UP) {
                /* Now we take down the rings to rebuild them */
                stop_gfar(dev);
                err = startup_gfar(dev);
        } else {
                gfar_mac_reset(priv);
        }

        clear_bit_unlock(GFAR_RESETTING, &priv->state);

        return err;
}

static uint32_t gfar_get_msglevel(struct net_device *dev)
{
        struct gfar_private *priv = netdev_priv(dev);

        return priv->msg_enable;
}

static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
{
        struct gfar_private *priv = netdev_priv(dev);

        priv->msg_enable = data;
}

#ifdef CONFIG_PM
static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct gfar_private *priv = netdev_priv(dev);

        wol->supported = 0;
        wol->wolopts = 0;

        if (priv->wol_supported & GFAR_WOL_MAGIC)
                wol->supported |= WAKE_MAGIC;

        if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
                wol->supported |= WAKE_UCAST;

        if (priv->wol_opts & GFAR_WOL_MAGIC)
                wol->wolopts |= WAKE_MAGIC;

        if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
                wol->wolopts |= WAKE_UCAST;
}

static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct gfar_private *priv = netdev_priv(dev);
        u16 wol_opts = 0;
        int err;

        if (!priv->wol_supported && wol->wolopts)
                return -EINVAL;

        if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
                return -EINVAL;

        if (wol->wolopts & WAKE_MAGIC) {
                wol_opts |= GFAR_WOL_MAGIC;
        } else {
                if (wol->wolopts & WAKE_UCAST)
                        wol_opts |= GFAR_WOL_FILER_UCAST;
        }

        wol_opts &= priv->wol_supported;
        priv->wol_opts = 0;

        err = device_set_wakeup_enable(priv->dev, wol_opts);
        if (err)
                return err;

        priv->wol_opts = wol_opts;

        return 0;
}
#endif

static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
{
        u32 fcr = 0x0, fpr = FPR_FILER_MASK;

        if (ethflow & RXH_L2DA) {
                fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
                      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;

                fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
                      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & RXH_VLAN) {
                fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & RXH_IP_SRC) {
                fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & (RXH_IP_DST)) {
                fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & RXH_L3_PROTO) {
                fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & RXH_L4_B_0_1) {
                fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

        if (ethflow & RXH_L4_B_2_3) {
                fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
                      RQFCR_AND | RQFCR_HASHTBL_0;
                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }
}

static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
                                       u64 class)
{
        unsigned int cmp_rqfpr;
        unsigned int *local_rqfpr;
        unsigned int *local_rqfcr;
        int i = 0x0, k = 0x0;
        int j = MAX_FILER_IDX, l = 0x0;
        int ret = 1;

        local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
                                    GFP_KERNEL);
        local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
                                    GFP_KERNEL);
        if (!local_rqfpr || !local_rqfcr) {
                ret = 0;
                goto err;
        }

        switch (class) {
        case TCP_V4_FLOW:
                cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
                break;
        case UDP_V4_FLOW:
                cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
                break;
        case TCP_V6_FLOW:
                cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
                break;
        case UDP_V6_FLOW:
                cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
                break;
        default:
                netdev_err(priv->ndev,
                           "Right now this class is not supported\n");
                ret = 0;
                goto err;
        }

        for (i = 0; i < MAX_FILER_IDX + 1; i++) {
                local_rqfpr[j] = priv->ftp_rqfpr[i];
                local_rqfcr[j] = priv->ftp_rqfcr[i];
                j--;
                if ((priv->ftp_rqfcr[i] ==
                     (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
                    (priv->ftp_rqfpr[i] == cmp_rqfpr))
                        break;
        }

        if (i == MAX_FILER_IDX + 1) {
                netdev_err(priv->ndev,
                           "No parse rule found, can't create hash rules\n");
                ret = 0;
                goto err;
        }

        /* If a match was found, then it begins the starting of a cluster rule
         * if it was already programmed, we need to overwrite these rules
         */
        for (l = i+1; l < MAX_FILER_IDX; l++) {
                if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
                    !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
                        priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
                                             RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
                        priv->ftp_rqfpr[l] = FPR_FILER_MASK;
                        gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
                                         priv->ftp_rqfpr[l]);
                        break;
                }

                if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
                        (priv->ftp_rqfcr[l] & RQFCR_AND))
                        continue;
                else {
                        local_rqfpr[j] = priv->ftp_rqfpr[l];
                        local_rqfcr[j] = priv->ftp_rqfcr[l];
                        j--;
                }
        }

        priv->cur_filer_idx = l - 1;

        /* hash rules */
        ethflow_to_filer_rules(priv, ethflow);

        /* Write back the popped out rules again */
        for (k = j+1; k < MAX_FILER_IDX; k++) {
                priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
                priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
                gfar_write_filer(priv, priv->cur_filer_idx,
                                 local_rqfcr[k], local_rqfpr[k]);
                if (!priv->cur_filer_idx)
                        break;
                priv->cur_filer_idx = priv->cur_filer_idx - 1;
        }

err:
        kfree(local_rqfcr);
        kfree(local_rqfpr);
        return ret;
}

static int gfar_set_rxfh_fields(struct net_device *dev,
                                const struct ethtool_rxfh_fields *cmd,
                                struct netlink_ext_ack *extack)
{
        struct gfar_private *priv = netdev_priv(dev);
        int ret;

        if (test_bit(GFAR_RESETTING, &priv->state))
                return -EBUSY;

        mutex_lock(&priv->rx_queue_access);

        ret = 0;
        /* write the filer rules here */
        if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
                ret = -EINVAL;

        mutex_unlock(&priv->rx_queue_access);

        return ret;
}

static int gfar_check_filer_hardware(struct gfar_private *priv)
{
        struct gfar __iomem *regs = priv->gfargrp[0].regs;
        u32 i;

        /* Check if we are in FIFO mode */
        i = gfar_read(&regs->ecntrl);
        i &= ECNTRL_FIFM;
        if (i == ECNTRL_FIFM) {
                netdev_notice(priv->ndev, "Interface in FIFO mode\n");
                i = gfar_read(&regs->rctrl);
                i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
                if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
                        netdev_info(priv->ndev,
                                    "Receive Queue Filtering enabled\n");
                } else {
                        netdev_warn(priv->ndev,
                                    "Receive Queue Filtering disabled\n");
                        return -EOPNOTSUPP;
                }
        }
        /* Or in standard mode */
        else {
                i = gfar_read(&regs->rctrl);
                i &= RCTRL_PRSDEP_MASK;
                if (i == RCTRL_PRSDEP_MASK) {
                        netdev_info(priv->ndev,
                                    "Receive Queue Filtering enabled\n");
                } else {
                        netdev_warn(priv->ndev,
                                    "Receive Queue Filtering disabled\n");
                        return -EOPNOTSUPP;
                }
        }

        /* Sets the properties for arbitrary filer rule
         * to the first 4 Layer 4 Bytes
         */
        gfar_write(&regs->rbifx, 0xC0C1C2C3);
        return 0;
}

/* Write a mask to filer cache */
static void gfar_set_mask(u32 mask, struct filer_table *tab)
{
        tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
        tab->fe[tab->index].prop = mask;
        tab->index++;
}

/* Sets parse bits (e.g. IP or TCP) */
static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
{
        gfar_set_mask(mask, tab);
        tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
                                   RQFCR_AND;
        tab->fe[tab->index].prop = value;
        tab->index++;
}

static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
                                       struct filer_table *tab)
{
        gfar_set_mask(mask, tab);
        tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
        tab->fe[tab->index].prop = value;
        tab->index++;
}

/* For setting a tuple of value and mask of type flag
 * Example:
 * IP-Src = 10.0.0.0/255.0.0.0
 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 *
 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 * For a don't care mask it gives us a 0
 *
 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 * and MAC stuff on an upper level (due to missing information on this level).
 * For these guys we can discard them if they are value=0 and mask=0.
 *
 * Further the all masks are one-padded for better hardware efficiency.
 */
static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
                               struct filer_table *tab)
{
        switch (flag) {
                /* 3bit */
        case RQFCR_PID_PRI:
                if (!(value | mask))
                        return;
                mask |= RQFCR_PID_PRI_MASK;
                break;
                /* 8bit */
        case RQFCR_PID_L4P:
        case RQFCR_PID_TOS:
                if (!~(mask | RQFCR_PID_L4P_MASK))
                        return;
                if (!mask)
                        mask = ~0;
                else
                        mask |= RQFCR_PID_L4P_MASK;
                break;
                /* 12bit */
        case RQFCR_PID_VID:
                if (!(value | mask))
                        return;
                mask |= RQFCR_PID_VID_MASK;
                break;
                /* 16bit */
        case RQFCR_PID_DPT:
        case RQFCR_PID_SPT:
        case RQFCR_PID_ETY:
                if (!~(mask | RQFCR_PID_PORT_MASK))
                        return;
                if (!mask)
                        mask = ~0;
                else
                        mask |= RQFCR_PID_PORT_MASK;
                break;
                /* 24bit */
        case RQFCR_PID_DAH:
        case RQFCR_PID_DAL:
        case RQFCR_PID_SAH:
        case RQFCR_PID_SAL:
                if (!(value | mask))
                        return;
                mask |= RQFCR_PID_MAC_MASK;
                break;
                /* for all real 32bit masks */
        default:
                if (!~mask)
                        return;
                if (!mask)
                        mask = ~0;
                break;
        }
        gfar_set_general_attribute(value, mask, flag, tab);
}

/* Translates value and mask for UDP, TCP or SCTP */
static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
                              struct ethtool_tcpip4_spec *mask,
                              struct filer_table *tab)
{
        gfar_set_attribute(be32_to_cpu(value->ip4src),
                           be32_to_cpu(mask->ip4src),
                           RQFCR_PID_SIA, tab);
        gfar_set_attribute(be32_to_cpu(value->ip4dst),
                           be32_to_cpu(mask->ip4dst),
                           RQFCR_PID_DIA, tab);
        gfar_set_attribute(be16_to_cpu(value->pdst),
                           be16_to_cpu(mask->pdst),
                           RQFCR_PID_DPT, tab);
        gfar_set_attribute(be16_to_cpu(value->psrc),
                           be16_to_cpu(mask->psrc),
                           RQFCR_PID_SPT, tab);
        gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
}

/* Translates value and mask for RAW-IP4 */
static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
                             struct ethtool_usrip4_spec *mask,
                             struct filer_table *tab)
{
        gfar_set_attribute(be32_to_cpu(value->ip4src),
                           be32_to_cpu(mask->ip4src),
                           RQFCR_PID_SIA, tab);
        gfar_set_attribute(be32_to_cpu(value->ip4dst),
                           be32_to_cpu(mask->ip4dst),
                           RQFCR_PID_DIA, tab);
        gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
        gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
        gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
                           be32_to_cpu(mask->l4_4_bytes),
                           RQFCR_PID_ARB, tab);

}

/* Translates value and mask for ETHER spec */
static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
                           struct filer_table *tab)
{
        u32 upper_temp_mask = 0;
        u32 lower_temp_mask = 0;

        /* Source address */
        if (!is_broadcast_ether_addr(mask->h_source)) {
                if (is_zero_ether_addr(mask->h_source)) {
                        upper_temp_mask = 0xFFFFFFFF;
                        lower_temp_mask = 0xFFFFFFFF;
                } else {
                        upper_temp_mask = mask->h_source[0] << 16 |
                                          mask->h_source[1] << 8  |
                                          mask->h_source[2];
                        lower_temp_mask = mask->h_source[3] << 16 |
                                          mask->h_source[4] << 8  |
                                          mask->h_source[5];
                }
                /* Upper 24bit */
                gfar_set_attribute(value->h_source[0] << 16 |
                                   value->h_source[1] << 8  |
                                   value->h_source[2],
                                   upper_temp_mask, RQFCR_PID_SAH, tab);
                /* And the same for the lower part */
                gfar_set_attribute(value->h_source[3] << 16 |
                                   value->h_source[4] << 8  |
                                   value->h_source[5],
                                   lower_temp_mask, RQFCR_PID_SAL, tab);
        }
        /* Destination address */
        if (!is_broadcast_ether_addr(mask->h_dest)) {
                /* Special for destination is limited broadcast */
                if ((is_broadcast_ether_addr(value->h_dest) &&
                    is_zero_ether_addr(mask->h_dest))) {
                        gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
                } else {
                        if (is_zero_ether_addr(mask->h_dest)) {
                                upper_temp_mask = 0xFFFFFFFF;
                                lower_temp_mask = 0xFFFFFFFF;
                        } else {
                                upper_temp_mask = mask->h_dest[0] << 16 |
                                                  mask->h_dest[1] << 8  |
                                                  mask->h_dest[2];
                                lower_temp_mask = mask->h_dest[3] << 16 |
                                                  mask->h_dest[4] << 8  |
                                                  mask->h_dest[5];
                        }

                        /* Upper 24bit */
                        gfar_set_attribute(value->h_dest[0] << 16 |
                                           value->h_dest[1] << 8  |
                                           value->h_dest[2],
                                           upper_temp_mask, RQFCR_PID_DAH, tab);
                        /* And the same for the lower part */
                        gfar_set_attribute(value->h_dest[3] << 16 |
                                           value->h_dest[4] << 8  |
                                           value->h_dest[5],
                                           lower_temp_mask, RQFCR_PID_DAL, tab);
                }
        }

        gfar_set_attribute(be16_to_cpu(value->h_proto),
                           be16_to_cpu(mask->h_proto),
                           RQFCR_PID_ETY, tab);
}

static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
{
        return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
}

static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
{
        return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
}

static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
{
        return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
}

static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
{
        return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
}

static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
{
        return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
                VLAN_PRIO_SHIFT;
}

static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
{
        return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
                VLAN_PRIO_SHIFT;
}

/* Convert a rule to binary filter format of gianfar */
static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
                                 struct filer_table *tab)
{
        u32 vlan = 0, vlan_mask = 0;
        u32 id = 0, id_mask = 0;
        u32 cfi = 0, cfi_mask = 0;
        u32 prio = 0, prio_mask = 0;
        u32 old_index = tab->index;

        /* Check if vlan is wanted */
        if ((rule->flow_type & FLOW_EXT) &&
            (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
                if (!rule->m_ext.vlan_tci)
                        rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);

                vlan = RQFPR_VLN;
                vlan_mask = RQFPR_VLN;

                /* Separate the fields */
                id = vlan_tci_vid(rule);
                id_mask = vlan_tci_vidm(rule);
                cfi = vlan_tci_cfi(rule);
                cfi_mask = vlan_tci_cfim(rule);
                prio = vlan_tci_prio(rule);
                prio_mask = vlan_tci_priom(rule);

                if (cfi_mask) {
                        if (cfi)
                                vlan |= RQFPR_CFI;
                        vlan_mask |= RQFPR_CFI;
                }
        }

        switch (rule->flow_type & ~FLOW_EXT) {
        case TCP_V4_FLOW:
                gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
                                    RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
                gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
                                  &rule->m_u.tcp_ip4_spec, tab);
                break;
        case UDP_V4_FLOW:
                gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
                                    RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
                gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
                                  &rule->m_u.udp_ip4_spec, tab);
                break;
        case SCTP_V4_FLOW:
                gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
                                    tab);
                gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
                gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
                                  (struct ethtool_tcpip4_spec *)&rule->m_u,
                                  tab);
                break;
        case IP_USER_FLOW:
                gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
                                    tab);
                gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
                                 (struct ethtool_usrip4_spec *) &rule->m_u,
                                 tab);
                break;
        case ETHER_FLOW:
                if (vlan)
                        gfar_set_parse_bits(vlan, vlan_mask, tab);
                gfar_set_ether((struct ethhdr *) &rule->h_u,
                               (struct ethhdr *) &rule->m_u, tab);
                break;
        default:
                return -1;
        }

        /* Set the vlan attributes in the end */
        if (vlan) {
                gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
                gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
        }

        /* If there has been nothing written till now, it must be a default */
        if (tab->index == old_index) {
                gfar_set_mask(0xFFFFFFFF, tab);
                tab->fe[tab->index].ctrl = 0x20;
                tab->fe[tab->index].prop = 0x0;
                tab->index++;
        }

        /* Remove last AND */
        tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);

        /* Specify which queue to use or to drop */
        if (rule->ring_cookie == RX_CLS_FLOW_DISC)
                tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
        else
                tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);

        /* Only big enough entries can be clustered */
        if (tab->index > (old_index + 2)) {
                tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
                tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
        }

        /* In rare cases the cache can be full while there is
         * free space in hw
         */
        if (tab->index > MAX_FILER_CACHE_IDX - 1)
                return -EBUSY;

        return 0;
}

/* Write the bit-pattern from software's buffer to hardware registers */
static int gfar_write_filer_table(struct gfar_private *priv,
                                  struct filer_table *tab)
{
        u32 i = 0;
        if (tab->index > MAX_FILER_IDX - 1)
                return -EBUSY;

        /* Fill regular entries */
        for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
                gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
        /* Fill the rest with fall-troughs */
        for (; i < MAX_FILER_IDX; i++)
                gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
        /* Last entry must be default accept
         * because that's what people expect
         */
        gfar_write_filer(priv, i, 0x20, 0x0);

        return 0;
}

static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
                                 struct gfar_private *priv)
{

        if (flow->flow_type & FLOW_EXT) {
                if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
                        netdev_warn(priv->ndev,
                                    "User-specific data not supported!\n");
                if (~flow->m_ext.vlan_etype)
                        netdev_warn(priv->ndev,
                                    "VLAN-etype not supported!\n");
        }
        if (flow->flow_type == IP_USER_FLOW)
                if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
                        netdev_warn(priv->ndev,
                                    "IP-Version differing from IPv4 not supported!\n");

        return 0;
}

static int gfar_process_filer_changes(struct gfar_private *priv)
{
        struct ethtool_flow_spec_container *j;
        struct filer_table *tab;
        s32 ret = 0;

        /* So index is set to zero, too! */
        tab = kzalloc_obj(*tab);
        if (tab == NULL)
                return -ENOMEM;

        /* Now convert the existing filer data from flow_spec into
         * filer tables binary format
         */
        list_for_each_entry(j, &priv->rx_list.list, list) {
                ret = gfar_convert_to_filer(&j->fs, tab);
                if (ret == -EBUSY) {
                        netdev_err(priv->ndev,
                                   "Rule not added: No free space!\n");
                        goto end;
                }
                if (ret == -1) {
                        netdev_err(priv->ndev,
                                   "Rule not added: Unsupported Flow-type!\n");
                        goto end;
                }
        }

        /* Write everything to hardware */
        ret = gfar_write_filer_table(priv, tab);
        if (ret == -EBUSY) {
                netdev_err(priv->ndev, "Rule not added: No free space!\n");
                goto end;
        }

end:
        kfree(tab);
        return ret;
}

static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
{
        u32 i = 0;

        for (i = 0; i < sizeof(flow->m_u); i++)
                flow->m_u.hdata[i] ^= 0xFF;

        flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
        flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
        flow->m_ext.data[0] ^= cpu_to_be32(~0);
        flow->m_ext.data[1] ^= cpu_to_be32(~0);
}

static int gfar_add_cls(struct gfar_private *priv,
                        struct ethtool_rx_flow_spec *flow)
{
        struct ethtool_flow_spec_container *temp, *comp;
        int ret = 0;

        temp = kmalloc_obj(*temp);
        if (temp == NULL)
                return -ENOMEM;
        memcpy(&temp->fs, flow, sizeof(temp->fs));

        gfar_invert_masks(&temp->fs);
        ret = gfar_check_capability(&temp->fs, priv);
        if (ret)
                goto clean_mem;
        /* Link in the new element at the right @location */
        if (list_empty(&priv->rx_list.list)) {
                ret = gfar_check_filer_hardware(priv);
                if (ret != 0)
                        goto clean_mem;
                list_add(&temp->list, &priv->rx_list.list);
                goto process;
        } else {
                list_for_each_entry(comp, &priv->rx_list.list, list) {
                        if (comp->fs.location > flow->location) {
                                list_add_tail(&temp->list, &comp->list);
                                goto process;
                        }
                        if (comp->fs.location == flow->location) {
                                netdev_err(priv->ndev,
                                           "Rule not added: ID %d not free!\n",
                                           flow->location);
                                ret = -EBUSY;
                                goto clean_mem;
                        }
                }
                list_add_tail(&temp->list, &priv->rx_list.list);
        }

process:
        priv->rx_list.count++;
        ret = gfar_process_filer_changes(priv);
        if (ret)
                goto clean_list;
        return ret;

clean_list:
        priv->rx_list.count--;
        list_del(&temp->list);
clean_mem:
        kfree(temp);
        return ret;
}

static int gfar_del_cls(struct gfar_private *priv, u32 loc)
{
        struct ethtool_flow_spec_container *comp;
        u32 ret = -EINVAL;

        if (list_empty(&priv->rx_list.list))
                return ret;

        list_for_each_entry(comp, &priv->rx_list.list, list) {
                if (comp->fs.location == loc) {
                        list_del(&comp->list);
                        kfree(comp);
                        priv->rx_list.count--;
                        gfar_process_filer_changes(priv);
                        ret = 0;
                        break;
                }
        }

        return ret;
}

static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
{
        struct ethtool_flow_spec_container *comp;
        u32 ret = -EINVAL;

        list_for_each_entry(comp, &priv->rx_list.list, list) {
                if (comp->fs.location == cmd->fs.location) {
                        memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
                        gfar_invert_masks(&cmd->fs);
                        ret = 0;
                        break;
                }
        }

        return ret;
}

static int gfar_get_cls_all(struct gfar_private *priv,
                            struct ethtool_rxnfc *cmd, u32 *rule_locs)
{
        struct ethtool_flow_spec_container *comp;
        u32 i = 0;

        list_for_each_entry(comp, &priv->rx_list.list, list) {
                if (i == cmd->rule_cnt)
                        return -EMSGSIZE;
                rule_locs[i] = comp->fs.location;
                i++;
        }

        cmd->data = MAX_FILER_IDX;
        cmd->rule_cnt = i;

        return 0;
}

static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
{
        struct gfar_private *priv = netdev_priv(dev);
        int ret = 0;

        if (test_bit(GFAR_RESETTING, &priv->state))
                return -EBUSY;

        mutex_lock(&priv->rx_queue_access);

        switch (cmd->cmd) {
        case ETHTOOL_SRXCLSRLINS:
                if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
                     cmd->fs.ring_cookie >= priv->num_rx_queues) ||
                    cmd->fs.location >= MAX_FILER_IDX) {
                        ret = -EINVAL;
                        break;
                }
                ret = gfar_add_cls(priv, &cmd->fs);
                break;
        case ETHTOOL_SRXCLSRLDEL:
                ret = gfar_del_cls(priv, cmd->fs.location);
                break;
        default:
                ret = -EINVAL;
        }

        mutex_unlock(&priv->rx_queue_access);

        return ret;
}

static u32 gfar_get_rx_ring_count(struct net_device *dev)
{
        struct gfar_private *priv = netdev_priv(dev);

        return priv->num_rx_queues;
}

static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
                        u32 *rule_locs)
{
        struct gfar_private *priv = netdev_priv(dev);
        int ret = 0;

        switch (cmd->cmd) {
        case ETHTOOL_GRXCLSRLCNT:
                cmd->rule_cnt = priv->rx_list.count;
                break;
        case ETHTOOL_GRXCLSRULE:
                ret = gfar_get_cls(priv, cmd);
                break;
        case ETHTOOL_GRXCLSRLALL:
                ret = gfar_get_cls_all(priv, cmd, rule_locs);
                break;
        default:
                ret = -EINVAL;
                break;
        }

        return ret;
}

static int gfar_get_ts_info(struct net_device *dev,
                            struct kernel_ethtool_ts_info *info)
{
        struct gfar_private *priv = netdev_priv(dev);
        struct platform_device *ptp_dev;
        struct device_node *ptp_node;
        struct ptp_qoriq *ptp = NULL;

        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
                info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
                return 0;
        }

        ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
        if (ptp_node) {
                ptp_dev = of_find_device_by_node(ptp_node);
                of_node_put(ptp_node);
                if (ptp_dev) {
                        ptp = platform_get_drvdata(ptp_dev);
                        put_device(&ptp_dev->dev);
                }
        }

        if (ptp)
                info->phc_index = ptp->phc_index;

        info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
                                SOF_TIMESTAMPING_RX_HARDWARE |
                                SOF_TIMESTAMPING_RAW_HARDWARE |
                                SOF_TIMESTAMPING_TX_SOFTWARE;
        info->tx_types = (1 << HWTSTAMP_TX_OFF) |
                         (1 << HWTSTAMP_TX_ON);
        info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
                           (1 << HWTSTAMP_FILTER_ALL);
        return 0;
}

const struct ethtool_ops gfar_ethtool_ops = {
        .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
                                     ETHTOOL_COALESCE_MAX_FRAMES,
        .get_drvinfo = gfar_gdrvinfo,
        .get_regs_len = gfar_reglen,
        .get_regs = gfar_get_regs,
        .get_link = ethtool_op_get_link,
        .get_coalesce = gfar_gcoalesce,
        .set_coalesce = gfar_scoalesce,
        .get_ringparam = gfar_gringparam,
        .set_ringparam = gfar_sringparam,
        .get_pauseparam = gfar_gpauseparam,
        .set_pauseparam = gfar_spauseparam,
        .get_strings = gfar_gstrings,
        .get_sset_count = gfar_sset_count,
        .get_ethtool_stats = gfar_fill_stats,
        .get_msglevel = gfar_get_msglevel,
        .set_msglevel = gfar_set_msglevel,
#ifdef CONFIG_PM
        .get_wol = gfar_get_wol,
        .set_wol = gfar_set_wol,
#endif
        .set_rxnfc = gfar_set_nfc,
        .get_rxnfc = gfar_get_nfc,
        .get_rx_ring_count = gfar_get_rx_ring_count,
        .set_rxfh_fields = gfar_set_rxfh_fields,
        .get_ts_info = gfar_get_ts_info,
        .get_link_ksettings = phy_ethtool_get_link_ksettings,
        .set_link_ksettings = phy_ethtool_set_link_ksettings,
};