drivers/net/ethernet/pensando/ionic/ionic_ethtool.c - linux/torvalds/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */

 #include <linux/module.h>
 #include <linux/netdevice.h>

 #include "ionic.h"
 #include "ionic_bus.h"
 #include "ionic_lif.h"
 #include "ionic_ethtool.h"
 #include "ionic_stats.h"

 static const char ionic_priv_flags_strings[][ETH_GSTRING_LEN] = {
 #define PRIV_F_SW_DBG_STATS		BIT(0)
 	"sw-dbg-stats",
 };
 #define PRIV_FLAGS_COUNT ARRAY_SIZE(ionic_priv_flags_strings)

 static void ionic_get_stats_strings(struct ionic_lif *lif, u8 *buf)
 {
 	u32 i;

 	for (i = 0; i < ionic_num_stats_grps; i++)
 		ionic_stats_groups[i].get_strings(lif, &buf);
 }

 static void ionic_get_stats(struct net_device *netdev,
 			    struct ethtool_stats *stats, u64 *buf)
 {
 	struct ionic_lif *lif;
 	u32 i;

 	lif = netdev_priv(netdev);

 	memset(buf, 0, stats->n_stats * sizeof(*buf));
 	for (i = 0; i < ionic_num_stats_grps; i++)
 		ionic_stats_groups[i].get_values(lif, &buf);
 }

 static int ionic_get_stats_count(struct ionic_lif *lif)
 {
 	int i, num_stats = 0;

 	for (i = 0; i < ionic_num_stats_grps; i++)
 		num_stats += ionic_stats_groups[i].get_count(lif);

 	return num_stats;
 }

 static int ionic_get_sset_count(struct net_device *netdev, int sset)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	int count = 0;

 	switch (sset) {
 	case ETH_SS_STATS:
 		count = ionic_get_stats_count(lif);
 		break;
 	case ETH_SS_PRIV_FLAGS:
 		count = PRIV_FLAGS_COUNT;
 		break;
 	}
 	return count;
 }

 static void ionic_get_strings(struct net_device *netdev,
 			      u32 sset, u8 *buf)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	switch (sset) {
 	case ETH_SS_STATS:
 		ionic_get_stats_strings(lif, buf);
 		break;
 	case ETH_SS_PRIV_FLAGS:
 		memcpy(buf, ionic_priv_flags_strings,
 		       PRIV_FLAGS_COUNT * ETH_GSTRING_LEN);
 		break;
 	}
 }

 static void ionic_get_drvinfo(struct net_device *netdev,
 			      struct ethtool_drvinfo *drvinfo)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic *ionic = lif->ionic;

 	strlcpy(drvinfo->driver, IONIC_DRV_NAME, sizeof(drvinfo->driver));
 	strlcpy(drvinfo->version, IONIC_DRV_VERSION, sizeof(drvinfo->version));
 	strlcpy(drvinfo->fw_version, ionic->idev.dev_info.fw_version,
 		sizeof(drvinfo->fw_version));
 	strlcpy(drvinfo->bus_info, ionic_bus_info(ionic),
 		sizeof(drvinfo->bus_info));
 }

 static int ionic_get_regs_len(struct net_device *netdev)
 {
 	return (IONIC_DEV_INFO_REG_COUNT + IONIC_DEV_CMD_REG_COUNT) * sizeof(u32);
 }

 static void ionic_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
 			   void *p)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	unsigned int size;

 	regs->version = IONIC_DEV_CMD_REG_VERSION;

 	size = IONIC_DEV_INFO_REG_COUNT * sizeof(u32);
 	memcpy_fromio(p, lif->ionic->idev.dev_info_regs->words, size);

 	size = IONIC_DEV_CMD_REG_COUNT * sizeof(u32);
 	memcpy_fromio(p, lif->ionic->idev.dev_cmd_regs->words, size);
 }

 static int ionic_get_link_ksettings(struct net_device *netdev,
 				    struct ethtool_link_ksettings *ks)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_dev *idev = &lif->ionic->idev;
 	int copper_seen = 0;

 	ethtool_link_ksettings_zero_link_mode(ks, supported);

 	/* The port_info data is found in a DMA space that the NIC keeps
 	 * up-to-date, so there's no need to request the data from the
 	 * NIC, we already have it in our memory space.
 	 */

 	switch (le16_to_cpu(idev->port_info->status.xcvr.pid)) {
 		/* Copper */
 	case IONIC_XCVR_PID_QSFP_100G_CR4:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseCR4_Full);
 		copper_seen++;
 		break;
 	case IONIC_XCVR_PID_QSFP_40GBASE_CR4:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     40000baseCR4_Full);
 		copper_seen++;
 		break;
 	case IONIC_XCVR_PID_SFP_25GBASE_CR_S:
 	case IONIC_XCVR_PID_SFP_25GBASE_CR_L:
 	case IONIC_XCVR_PID_SFP_25GBASE_CR_N:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     25000baseCR_Full);
 		copper_seen++;
 		break;
 	case IONIC_XCVR_PID_SFP_10GBASE_AOC:
 	case IONIC_XCVR_PID_SFP_10GBASE_CU:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     10000baseCR_Full);
 		copper_seen++;
 		break;

 		/* Fibre */
 	case IONIC_XCVR_PID_QSFP_100G_SR4:
 	case IONIC_XCVR_PID_QSFP_100G_AOC:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseSR4_Full);
 		break;
 	case IONIC_XCVR_PID_QSFP_100G_LR4:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseLR4_ER4_Full);
 		break;
 	case IONIC_XCVR_PID_QSFP_100G_ER4:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseLR4_ER4_Full);
 		break;
 	case IONIC_XCVR_PID_QSFP_40GBASE_SR4:
 	case IONIC_XCVR_PID_QSFP_40GBASE_AOC:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     40000baseSR4_Full);
 		break;
 	case IONIC_XCVR_PID_QSFP_40GBASE_LR4:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     40000baseLR4_Full);
 		break;
 	case IONIC_XCVR_PID_SFP_25GBASE_SR:
 	case IONIC_XCVR_PID_SFP_25GBASE_AOC:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     25000baseSR_Full);
 		break;
 	case IONIC_XCVR_PID_SFP_10GBASE_SR:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     10000baseSR_Full);
 		break;
 	case IONIC_XCVR_PID_SFP_10GBASE_LR:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     10000baseLR_Full);
 		break;
 	case IONIC_XCVR_PID_SFP_10GBASE_LRM:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     10000baseLRM_Full);
 		break;
 	case IONIC_XCVR_PID_SFP_10GBASE_ER:
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     10000baseER_Full);
 		break;
 	case IONIC_XCVR_PID_UNKNOWN:
 		/* This means there's no module plugged in */
 		break;
 	default:
 		dev_info(lif->ionic->dev, "unknown xcvr type pid=%d / 0x%x\n",
 			 idev->port_info->status.xcvr.pid,
 			 idev->port_info->status.xcvr.pid);
 		break;
 	}

 	bitmap_copy(ks->link_modes.advertising, ks->link_modes.supported,
 		    __ETHTOOL_LINK_MODE_MASK_NBITS);

 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 	if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_FC)
 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_BASER);
 	else if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_RS)
 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);

 	ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
 	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);

 	if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_COPPER ||
 	    copper_seen)
 		ks->base.port = PORT_DA;
 	else if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_FIBER)
 		ks->base.port = PORT_FIBRE;
 	else
 		ks->base.port = PORT_NONE;

 	if (ks->base.port != PORT_NONE) {
 		ks->base.speed = le32_to_cpu(lif->info->status.link_speed);

 		if (le16_to_cpu(lif->info->status.link_status))
 			ks->base.duplex = DUPLEX_FULL;
 		else
 			ks->base.duplex = DUPLEX_UNKNOWN;

 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);

 		if (idev->port_info->config.an_enable) {
 			ethtool_link_ksettings_add_link_mode(ks, advertising,
 							     Autoneg);
 			ks->base.autoneg = AUTONEG_ENABLE;
 		}
 	}

 	return 0;
 }

 static int ionic_set_link_ksettings(struct net_device *netdev,
 				    const struct ethtool_link_ksettings *ks)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic *ionic = lif->ionic;
 	struct ionic_dev *idev;
 	int err = 0;

 	idev = &lif->ionic->idev;

 	/* set autoneg */
 	if (ks->base.autoneg != idev->port_info->config.an_enable) {
 		mutex_lock(&ionic->dev_cmd_lock);
 		ionic_dev_cmd_port_autoneg(idev, ks->base.autoneg);
 		err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 		mutex_unlock(&ionic->dev_cmd_lock);
 		if (err)
 			return err;
 	}

 	/* set speed */
 	if (ks->base.speed != le32_to_cpu(idev->port_info->config.speed)) {
 		mutex_lock(&ionic->dev_cmd_lock);
 		ionic_dev_cmd_port_speed(idev, ks->base.speed);
 		err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 		mutex_unlock(&ionic->dev_cmd_lock);
 		if (err)
 			return err;
 	}

 	return 0;
 }

 static void ionic_get_pauseparam(struct net_device *netdev,
 				 struct ethtool_pauseparam *pause)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	u8 pause_type;

 	pause->autoneg = 0;

 	pause_type = lif->ionic->idev.port_info->config.pause_type;
 	if (pause_type) {
 		pause->rx_pause = pause_type & IONIC_PAUSE_F_RX ? 1 : 0;
 		pause->tx_pause = pause_type & IONIC_PAUSE_F_TX ? 1 : 0;
 	}
 }

 static int ionic_set_pauseparam(struct net_device *netdev,
 				struct ethtool_pauseparam *pause)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic *ionic = lif->ionic;
 	u32 requested_pause;
 	int err;

 	if (pause->autoneg)
 		return -EOPNOTSUPP;

 	/* change both at the same time */
 	requested_pause = IONIC_PORT_PAUSE_TYPE_LINK;
 	if (pause->rx_pause)
 		requested_pause |= IONIC_PAUSE_F_RX;
 	if (pause->tx_pause)
 		requested_pause |= IONIC_PAUSE_F_TX;

 	if (requested_pause == lif->ionic->idev.port_info->config.pause_type)
 		return 0;

 	mutex_lock(&ionic->dev_cmd_lock);
 	ionic_dev_cmd_port_pause(&lif->ionic->idev, requested_pause);
 	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 	mutex_unlock(&ionic->dev_cmd_lock);
 	if (err)
 		return err;

 	return 0;
 }

 static int ionic_get_fecparam(struct net_device *netdev,
 			      struct ethtool_fecparam *fec)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	switch (lif->ionic->idev.port_info->config.fec_type) {
 	case IONIC_PORT_FEC_TYPE_NONE:
 		fec->active_fec = ETHTOOL_FEC_OFF;
 		break;
 	case IONIC_PORT_FEC_TYPE_RS:
 		fec->active_fec = ETHTOOL_FEC_RS;
 		break;
 	case IONIC_PORT_FEC_TYPE_FC:
 		fec->active_fec = ETHTOOL_FEC_BASER;
 		break;
 	}

 	fec->fec = ETHTOOL_FEC_OFF | ETHTOOL_FEC_RS | ETHTOOL_FEC_BASER;

 	return 0;
 }

 static int ionic_set_fecparam(struct net_device *netdev,
 			      struct ethtool_fecparam *fec)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	u8 fec_type;
 	int ret = 0;

 	if (lif->ionic->idev.port_info->config.an_enable) {
 		netdev_err(netdev, "FEC request not allowed while autoneg is enabled\n");
 		return -EINVAL;
 	}

 	switch (fec->fec) {
 	case ETHTOOL_FEC_NONE:
 		fec_type = IONIC_PORT_FEC_TYPE_NONE;
 		break;
 	case ETHTOOL_FEC_OFF:
 		fec_type = IONIC_PORT_FEC_TYPE_NONE;
 		break;
 	case ETHTOOL_FEC_RS:
 		fec_type = IONIC_PORT_FEC_TYPE_RS;
 		break;
 	case ETHTOOL_FEC_BASER:
 		fec_type = IONIC_PORT_FEC_TYPE_FC;
 		break;
 	case ETHTOOL_FEC_AUTO:
 	default:
 		netdev_err(netdev, "FEC request 0x%04x not supported\n",
 			   fec->fec);
 		return -EINVAL;
 	}

 	if (fec_type != lif->ionic->idev.port_info->config.fec_type) {
 		mutex_lock(&lif->ionic->dev_cmd_lock);
 		ionic_dev_cmd_port_fec(&lif->ionic->idev, fec_type);
 		ret = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT);
 		mutex_unlock(&lif->ionic->dev_cmd_lock);
 	}

 	return ret;
 }

 static int ionic_get_coalesce(struct net_device *netdev,
 			      struct ethtool_coalesce *coalesce)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	/* Tx uses Rx interrupt */
 	coalesce->tx_coalesce_usecs = lif->rx_coalesce_usecs;
 	coalesce->rx_coalesce_usecs = lif->rx_coalesce_usecs;

 	return 0;
 }

 static int ionic_set_coalesce(struct net_device *netdev,
 			      struct ethtool_coalesce *coalesce)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_identity *ident;
 	struct ionic_qcq *qcq;
 	unsigned int i;
 	u32 coal;

 	if (coalesce->rx_max_coalesced_frames ||
 	    coalesce->rx_coalesce_usecs_irq ||
 	    coalesce->rx_max_coalesced_frames_irq ||
 	    coalesce->tx_max_coalesced_frames ||
 	    coalesce->tx_coalesce_usecs_irq ||
 	    coalesce->tx_max_coalesced_frames_irq ||
 	    coalesce->stats_block_coalesce_usecs ||
 	    coalesce->use_adaptive_rx_coalesce ||
 	    coalesce->use_adaptive_tx_coalesce ||
 	    coalesce->pkt_rate_low ||
 	    coalesce->rx_coalesce_usecs_low ||
 	    coalesce->rx_max_coalesced_frames_low ||
 	    coalesce->tx_coalesce_usecs_low ||
 	    coalesce->tx_max_coalesced_frames_low ||
 	    coalesce->pkt_rate_high ||
 	    coalesce->rx_coalesce_usecs_high ||
 	    coalesce->rx_max_coalesced_frames_high ||
 	    coalesce->tx_coalesce_usecs_high ||
 	    coalesce->tx_max_coalesced_frames_high ||
 	    coalesce->rate_sample_interval)
 		return -EINVAL;

 	ident = &lif->ionic->ident;
 	if (ident->dev.intr_coal_div == 0) {
 		netdev_warn(netdev, "bad HW value in dev.intr_coal_div = %d\n",
 			    ident->dev.intr_coal_div);
 		return -EIO;
 	}

 	/* Tx uses Rx interrupt, so only change Rx */
 	if (coalesce->tx_coalesce_usecs != lif->rx_coalesce_usecs) {
 		netdev_warn(netdev, "only the rx-usecs can be changed\n");
 		return -EINVAL;
 	}

 	/* Convert the usec request to a HW useable value.  If they asked
 	 * for non-zero and it resolved to zero, bump it up
 	 */
 	coal = ionic_coal_usec_to_hw(lif->ionic, coalesce->rx_coalesce_usecs);
 	if (!coal && coalesce->rx_coalesce_usecs)
 		coal = 1;

 	if (coal > IONIC_INTR_CTRL_COAL_MAX)
 		return -ERANGE;

 	/* Save the new value */
 	lif->rx_coalesce_usecs = coalesce->rx_coalesce_usecs;
 	if (coal != lif->rx_coalesce_hw) {
 		lif->rx_coalesce_hw = coal;

 		if (test_bit(IONIC_LIF_UP, lif->state)) {
 			for (i = 0; i < lif->nxqs; i++) {
 				qcq = lif->rxqcqs[i].qcq;
 				ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
 						     qcq->intr.index,
 						     lif->rx_coalesce_hw);
 			}
 		}
 	}

 	return 0;
 }

 static void ionic_get_ringparam(struct net_device *netdev,
 				struct ethtool_ringparam *ring)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	ring->tx_max_pending = IONIC_MAX_TXRX_DESC;
 	ring->tx_pending = lif->ntxq_descs;
 	ring->rx_max_pending = IONIC_MAX_TXRX_DESC;
 	ring->rx_pending = lif->nrxq_descs;
 }

 static int ionic_set_ringparam(struct net_device *netdev,
 			       struct ethtool_ringparam *ring)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	bool running;
 	int err;

 	if (ring->rx_mini_pending || ring->rx_jumbo_pending) {
 		netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n");
 		return -EINVAL;
 	}

 	if (!is_power_of_2(ring->tx_pending) ||
 	    !is_power_of_2(ring->rx_pending)) {
 		netdev_info(netdev, "Descriptor count must be a power of 2\n");
 		return -EINVAL;
 	}

 	/* if nothing to do return success */
 	if (ring->tx_pending == lif->ntxq_descs &&
 	    ring->rx_pending == lif->nrxq_descs)
 		return 0;

 	err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
 	if (err)
 		return err;

 	running = test_bit(IONIC_LIF_UP, lif->state);
 	if (running)
 		ionic_stop(netdev);

 	lif->ntxq_descs = ring->tx_pending;
 	lif->nrxq_descs = ring->rx_pending;

 	if (running)
 		ionic_open(netdev);
 	clear_bit(IONIC_LIF_QUEUE_RESET, lif->state);

 	return 0;
 }

 static void ionic_get_channels(struct net_device *netdev,
 			       struct ethtool_channels *ch)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	/* report maximum channels */
 	ch->max_combined = lif->ionic->ntxqs_per_lif;

 	/* report current channels */
 	ch->combined_count = lif->nxqs;
 }

 static int ionic_set_channels(struct net_device *netdev,
 			      struct ethtool_channels *ch)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	bool running;
 	int err;

 	if (!ch->combined_count || ch->other_count ||
 	    ch->rx_count || ch->tx_count)
 		return -EINVAL;

 	if (ch->combined_count == lif->nxqs)
 		return 0;

 	err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
 	if (err)
 		return err;

 	running = test_bit(IONIC_LIF_UP, lif->state);
 	if (running)
 		ionic_stop(netdev);

 	lif->nxqs = ch->combined_count;

 	if (running)
 		ionic_open(netdev);
 	clear_bit(IONIC_LIF_QUEUE_RESET, lif->state);

 	return 0;
 }

 static u32 ionic_get_priv_flags(struct net_device *netdev)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	u32 priv_flags = 0;

 	if (test_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state))
 		priv_flags |= PRIV_F_SW_DBG_STATS;

 	return priv_flags;
 }

 static int ionic_set_priv_flags(struct net_device *netdev, u32 priv_flags)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	u32 flags = lif->flags;

 	clear_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state);
 	if (priv_flags & PRIV_F_SW_DBG_STATS)
 		set_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state);

 	if (flags != lif->flags)
 		lif->flags = flags;

 	return 0;
 }

 static int ionic_get_rxnfc(struct net_device *netdev,
 			   struct ethtool_rxnfc *info, u32 *rules)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	int err = 0;

 	switch (info->cmd) {
 	case ETHTOOL_GRXRINGS:
 		info->data = lif->nxqs;
 		break;
 	default:
 		netdev_err(netdev, "Command parameter %d is not supported\n",
 			   info->cmd);
 		err = -EOPNOTSUPP;
 	}

 	return err;
 }

 static u32 ionic_get_rxfh_indir_size(struct net_device *netdev)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	return le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
 }

 static u32 ionic_get_rxfh_key_size(struct net_device *netdev)
 {
 	return IONIC_RSS_HASH_KEY_SIZE;
 }

 static int ionic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
 			  u8 *hfunc)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	unsigned int i, tbl_sz;

 	if (indir) {
 		tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
 		for (i = 0; i < tbl_sz; i++)
 			indir[i] = lif->rss_ind_tbl[i];
 	}

 	if (key)
 		memcpy(key, lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE);

 	if (hfunc)
 		*hfunc = ETH_RSS_HASH_TOP;

 	return 0;
 }

 static int ionic_set_rxfh(struct net_device *netdev, const u32 *indir,
 			  const u8 *key, const u8 hfunc)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	int err;

 	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 		return -EOPNOTSUPP;

 	err = ionic_lif_rss_config(lif, lif->rss_types, key, indir);
 	if (err)
 		return err;

 	return 0;
 }

 static int ionic_set_tunable(struct net_device *dev,
 			     const struct ethtool_tunable *tuna,
 			     const void *data)
 {
 	struct ionic_lif *lif = netdev_priv(dev);

 	switch (tuna->id) {
 	case ETHTOOL_RX_COPYBREAK:
 		lif->rx_copybreak = *(u32 *)data;
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	return 0;
 }

 static int ionic_get_tunable(struct net_device *netdev,
 			     const struct ethtool_tunable *tuna, void *data)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);

 	switch (tuna->id) {
 	case ETHTOOL_RX_COPYBREAK:
 		*(u32 *)data = lif->rx_copybreak;
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	return 0;
 }

 static int ionic_get_module_info(struct net_device *netdev,
 				 struct ethtool_modinfo *modinfo)

 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_dev *idev = &lif->ionic->idev;
 	struct ionic_xcvr_status *xcvr;

 	xcvr = &idev->port_info->status.xcvr;

 	/* report the module data type and length */
 	switch (xcvr->sprom[0]) {
 	case 0x03: /* SFP */
 		modinfo->type = ETH_MODULE_SFF_8079;
 		modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
 		break;
 	case 0x0D: /* QSFP */
 	case 0x11: /* QSFP28 */
 		modinfo->type = ETH_MODULE_SFF_8436;
 		modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
 		break;
 	default:
 		netdev_info(netdev, "unknown xcvr type 0x%02x\n",
 			    xcvr->sprom[0]);
 		break;
 	}

 	return 0;
 }

 static int ionic_get_module_eeprom(struct net_device *netdev,
 				   struct ethtool_eeprom *ee,
 				   u8 *data)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_dev *idev = &lif->ionic->idev;
 	struct ionic_xcvr_status *xcvr;
 	char tbuf[sizeof(xcvr->sprom)];
 	int count = 10;
 	u32 len;

 	/* The NIC keeps the module prom up-to-date in the DMA space
 	 * so we can simply copy the module bytes into the data buffer.
 	 */
 	xcvr = &idev->port_info->status.xcvr;
 	len = min_t(u32, sizeof(xcvr->sprom), ee->len);

 	do {
 		memcpy(data, xcvr->sprom, len);
 		memcpy(tbuf, xcvr->sprom, len);

 		/* Let's make sure we got a consistent copy */
 		if (!memcmp(data, tbuf, len))
 			break;

 	} while (--count);

 	if (!count)
 		return -ETIMEDOUT;

 	return 0;
 }

 static int ionic_nway_reset(struct net_device *netdev)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic *ionic = lif->ionic;
 	int err = 0;

 	/* flap the link to force auto-negotiation */

 	mutex_lock(&ionic->dev_cmd_lock);

 	ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_DOWN);
 	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);

 	if (!err) {
 		ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
 		err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 	}

 	mutex_unlock(&ionic->dev_cmd_lock);

 	return err;
 }

 static const struct ethtool_ops ionic_ethtool_ops = {
 	.get_drvinfo		= ionic_get_drvinfo,
 	.get_regs_len		= ionic_get_regs_len,
 	.get_regs		= ionic_get_regs,
 	.get_link		= ethtool_op_get_link,
 	.get_link_ksettings	= ionic_get_link_ksettings,
 	.set_link_ksettings	= ionic_set_link_ksettings,
 	.get_coalesce		= ionic_get_coalesce,
 	.set_coalesce		= ionic_set_coalesce,
 	.get_ringparam		= ionic_get_ringparam,
 	.set_ringparam		= ionic_set_ringparam,
 	.get_channels		= ionic_get_channels,
 	.set_channels		= ionic_set_channels,
 	.get_strings		= ionic_get_strings,
 	.get_ethtool_stats	= ionic_get_stats,
 	.get_sset_count		= ionic_get_sset_count,
 	.get_priv_flags		= ionic_get_priv_flags,
 	.set_priv_flags		= ionic_set_priv_flags,
 	.get_rxnfc		= ionic_get_rxnfc,
 	.get_rxfh_indir_size	= ionic_get_rxfh_indir_size,
 	.get_rxfh_key_size	= ionic_get_rxfh_key_size,
 	.get_rxfh		= ionic_get_rxfh,
 	.set_rxfh		= ionic_set_rxfh,
 	.get_tunable		= ionic_get_tunable,
 	.set_tunable		= ionic_set_tunable,
 	.get_module_info	= ionic_get_module_info,
 	.get_module_eeprom	= ionic_get_module_eeprom,
 	.get_pauseparam		= ionic_get_pauseparam,
 	.set_pauseparam		= ionic_set_pauseparam,
 	.get_fecparam		= ionic_get_fecparam,
 	.set_fecparam		= ionic_set_fecparam,
 	.nway_reset		= ionic_nway_reset,
 };

 void ionic_ethtool_set_ops(struct net_device *netdev)
 {
 	netdev->ethtool_ops = &ionic_ethtool_ops;
 }
	// SPDX-License-Identifier: GPL-2.0
	/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */

	#include <linux/module.h>
	#include <linux/netdevice.h>

	#include "ionic.h"
	#include "ionic_bus.h"
	#include "ionic_lif.h"
	#include "ionic_ethtool.h"
	#include "ionic_stats.h"

	static const char ionic_priv_flags_strings[][ETH_GSTRING_LEN] = {
	#define PRIV_F_SW_DBG_STATS BIT(0)
	"sw-dbg-stats",
	};
	#define PRIV_FLAGS_COUNT ARRAY_SIZE(ionic_priv_flags_strings)

	static void ionic_get_stats_strings(struct ionic_lif lif, u8 buf)
	{
	u32 i;

	for (i = 0; i < ionic_num_stats_grps; i++)
	ionic_stats_groups[i].get_strings(lif, &buf);
	}

	static void ionic_get_stats(struct net_device *netdev,
	struct ethtool_stats stats, u64 buf)
	{
	struct ionic_lif *lif;
	u32 i;

	lif = netdev_priv(netdev);

	memset(buf, 0, stats->n_stats * sizeof(*buf));
	for (i = 0; i < ionic_num_stats_grps; i++)
	ionic_stats_groups[i].get_values(lif, &buf);
	}

	static int ionic_get_stats_count(struct ionic_lif *lif)
	{
	int i, num_stats = 0;

	for (i = 0; i < ionic_num_stats_grps; i++)
	num_stats += ionic_stats_groups[i].get_count(lif);

	return num_stats;
	}

	static int ionic_get_sset_count(struct net_device *netdev, int sset)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	int count = 0;

	switch (sset) {
	case ETH_SS_STATS:
	count = ionic_get_stats_count(lif);
	break;
	case ETH_SS_PRIV_FLAGS:
	count = PRIV_FLAGS_COUNT;
	break;
	}
	return count;
	}

	static void ionic_get_strings(struct net_device *netdev,
	u32 sset, u8 *buf)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	switch (sset) {
	case ETH_SS_STATS:
	ionic_get_stats_strings(lif, buf);
	break;
	case ETH_SS_PRIV_FLAGS:
	memcpy(buf, ionic_priv_flags_strings,
	PRIV_FLAGS_COUNT * ETH_GSTRING_LEN);
	break;
	}
	}

	static void ionic_get_drvinfo(struct net_device *netdev,
	struct ethtool_drvinfo *drvinfo)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic *ionic = lif->ionic;

	strlcpy(drvinfo->driver, IONIC_DRV_NAME, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, IONIC_DRV_VERSION, sizeof(drvinfo->version));
	strlcpy(drvinfo->fw_version, ionic->idev.dev_info.fw_version,
	sizeof(drvinfo->fw_version));
	strlcpy(drvinfo->bus_info, ionic_bus_info(ionic),
	sizeof(drvinfo->bus_info));
	}

	static int ionic_get_regs_len(struct net_device *netdev)
	{
	return (IONIC_DEV_INFO_REG_COUNT + IONIC_DEV_CMD_REG_COUNT) * sizeof(u32);
	}

	static void ionic_get_regs(struct net_device netdev, struct ethtool_regs regs,
	void *p)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	unsigned int size;

	regs->version = IONIC_DEV_CMD_REG_VERSION;

	size = IONIC_DEV_INFO_REG_COUNT * sizeof(u32);
	memcpy_fromio(p, lif->ionic->idev.dev_info_regs->words, size);

	size = IONIC_DEV_CMD_REG_COUNT * sizeof(u32);
	memcpy_fromio(p, lif->ionic->idev.dev_cmd_regs->words, size);
	}

	static int ionic_get_link_ksettings(struct net_device *netdev,
	struct ethtool_link_ksettings *ks)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic_dev *idev = &lif->ionic->idev;
	int copper_seen = 0;

	ethtool_link_ksettings_zero_link_mode(ks, supported);

	/* The port_info data is found in a DMA space that the NIC keeps
	* up-to-date, so there's no need to request the data from the
	* NIC, we already have it in our memory space.
	*/

	switch (le16_to_cpu(idev->port_info->status.xcvr.pid)) {
	/* Copper */
	case IONIC_XCVR_PID_QSFP_100G_CR4:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	100000baseCR4_Full);
	copper_seen++;
	break;
	case IONIC_XCVR_PID_QSFP_40GBASE_CR4:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	40000baseCR4_Full);
	copper_seen++;
	break;
	case IONIC_XCVR_PID_SFP_25GBASE_CR_S:
	case IONIC_XCVR_PID_SFP_25GBASE_CR_L:
	case IONIC_XCVR_PID_SFP_25GBASE_CR_N:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	25000baseCR_Full);
	copper_seen++;
	break;
	case IONIC_XCVR_PID_SFP_10GBASE_AOC:
	case IONIC_XCVR_PID_SFP_10GBASE_CU:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	10000baseCR_Full);
	copper_seen++;
	break;

	/* Fibre */
	case IONIC_XCVR_PID_QSFP_100G_SR4:
	case IONIC_XCVR_PID_QSFP_100G_AOC:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	100000baseSR4_Full);
	break;
	case IONIC_XCVR_PID_QSFP_100G_LR4:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	100000baseLR4_ER4_Full);
	break;
	case IONIC_XCVR_PID_QSFP_100G_ER4:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	100000baseLR4_ER4_Full);
	break;
	case IONIC_XCVR_PID_QSFP_40GBASE_SR4:
	case IONIC_XCVR_PID_QSFP_40GBASE_AOC:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	40000baseSR4_Full);
	break;
	case IONIC_XCVR_PID_QSFP_40GBASE_LR4:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	40000baseLR4_Full);
	break;
	case IONIC_XCVR_PID_SFP_25GBASE_SR:
	case IONIC_XCVR_PID_SFP_25GBASE_AOC:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	25000baseSR_Full);
	break;
	case IONIC_XCVR_PID_SFP_10GBASE_SR:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	10000baseSR_Full);
	break;
	case IONIC_XCVR_PID_SFP_10GBASE_LR:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	10000baseLR_Full);
	break;
	case IONIC_XCVR_PID_SFP_10GBASE_LRM:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	10000baseLRM_Full);
	break;
	case IONIC_XCVR_PID_SFP_10GBASE_ER:
	ethtool_link_ksettings_add_link_mode(ks, supported,
	10000baseER_Full);
	break;
	case IONIC_XCVR_PID_UNKNOWN:
	/* This means there's no module plugged in */
	break;
	default:
	dev_info(lif->ionic->dev, "unknown xcvr type pid=%d / 0x%x\n",
	idev->port_info->status.xcvr.pid,
	idev->port_info->status.xcvr.pid);
	break;
	}

	bitmap_copy(ks->link_modes.advertising, ks->link_modes.supported,
	__ETHTOOL_LINK_MODE_MASK_NBITS);

	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
	if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_FC)
	ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_BASER);
	else if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_RS)
	ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);

	ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);

	if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_COPPER \|\|
	copper_seen)
	ks->base.port = PORT_DA;
	else if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_FIBER)
	ks->base.port = PORT_FIBRE;
	else
	ks->base.port = PORT_NONE;

	if (ks->base.port != PORT_NONE) {
	ks->base.speed = le32_to_cpu(lif->info->status.link_speed);

	if (le16_to_cpu(lif->info->status.link_status))
	ks->base.duplex = DUPLEX_FULL;
	else
	ks->base.duplex = DUPLEX_UNKNOWN;

	ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);

	if (idev->port_info->config.an_enable) {
	ethtool_link_ksettings_add_link_mode(ks, advertising,
	Autoneg);
	ks->base.autoneg = AUTONEG_ENABLE;
	}
	}

	return 0;
	}

	static int ionic_set_link_ksettings(struct net_device *netdev,
	const struct ethtool_link_ksettings *ks)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic *ionic = lif->ionic;
	struct ionic_dev *idev;
	int err = 0;

	idev = &lif->ionic->idev;

	/* set autoneg */
	if (ks->base.autoneg != idev->port_info->config.an_enable) {
	mutex_lock(&ionic->dev_cmd_lock);
	ionic_dev_cmd_port_autoneg(idev, ks->base.autoneg);
	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
	mutex_unlock(&ionic->dev_cmd_lock);
	if (err)
	return err;
	}

	/* set speed */
	if (ks->base.speed != le32_to_cpu(idev->port_info->config.speed)) {
	mutex_lock(&ionic->dev_cmd_lock);
	ionic_dev_cmd_port_speed(idev, ks->base.speed);
	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
	mutex_unlock(&ionic->dev_cmd_lock);
	if (err)
	return err;
	}

	return 0;
	}

	static void ionic_get_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *pause)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	u8 pause_type;

	pause->autoneg = 0;

	pause_type = lif->ionic->idev.port_info->config.pause_type;
	if (pause_type) {
	pause->rx_pause = pause_type & IONIC_PAUSE_F_RX ? 1 : 0;
	pause->tx_pause = pause_type & IONIC_PAUSE_F_TX ? 1 : 0;
	}
	}

	static int ionic_set_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *pause)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic *ionic = lif->ionic;
	u32 requested_pause;
	int err;

	if (pause->autoneg)
	return -EOPNOTSUPP;

	/* change both at the same time */
	requested_pause = IONIC_PORT_PAUSE_TYPE_LINK;
	if (pause->rx_pause)
	requested_pause \|= IONIC_PAUSE_F_RX;
	if (pause->tx_pause)
	requested_pause \|= IONIC_PAUSE_F_TX;

	if (requested_pause == lif->ionic->idev.port_info->config.pause_type)
	return 0;

	mutex_lock(&ionic->dev_cmd_lock);
	ionic_dev_cmd_port_pause(&lif->ionic->idev, requested_pause);
	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
	mutex_unlock(&ionic->dev_cmd_lock);
	if (err)
	return err;

	return 0;
	}

	static int ionic_get_fecparam(struct net_device *netdev,
	struct ethtool_fecparam *fec)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	switch (lif->ionic->idev.port_info->config.fec_type) {
	case IONIC_PORT_FEC_TYPE_NONE:
	fec->active_fec = ETHTOOL_FEC_OFF;
	break;
	case IONIC_PORT_FEC_TYPE_RS:
	fec->active_fec = ETHTOOL_FEC_RS;
	break;
	case IONIC_PORT_FEC_TYPE_FC:
	fec->active_fec = ETHTOOL_FEC_BASER;
	break;
	}

	fec->fec = ETHTOOL_FEC_OFF \| ETHTOOL_FEC_RS \| ETHTOOL_FEC_BASER;

	return 0;
	}

	static int ionic_set_fecparam(struct net_device *netdev,
	struct ethtool_fecparam *fec)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	u8 fec_type;
	int ret = 0;

	if (lif->ionic->idev.port_info->config.an_enable) {
	netdev_err(netdev, "FEC request not allowed while autoneg is enabled\n");
	return -EINVAL;
	}

	switch (fec->fec) {
	case ETHTOOL_FEC_NONE:
	fec_type = IONIC_PORT_FEC_TYPE_NONE;
	break;
	case ETHTOOL_FEC_OFF:
	fec_type = IONIC_PORT_FEC_TYPE_NONE;
	break;
	case ETHTOOL_FEC_RS:
	fec_type = IONIC_PORT_FEC_TYPE_RS;
	break;
	case ETHTOOL_FEC_BASER:
	fec_type = IONIC_PORT_FEC_TYPE_FC;
	break;
	case ETHTOOL_FEC_AUTO:
	default:
	netdev_err(netdev, "FEC request 0x%04x not supported\n",
	fec->fec);
	return -EINVAL;
	}

	if (fec_type != lif->ionic->idev.port_info->config.fec_type) {
	mutex_lock(&lif->ionic->dev_cmd_lock);
	ionic_dev_cmd_port_fec(&lif->ionic->idev, fec_type);
	ret = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT);
	mutex_unlock(&lif->ionic->dev_cmd_lock);
	}

	return ret;
	}

	static int ionic_get_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *coalesce)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	/* Tx uses Rx interrupt */
	coalesce->tx_coalesce_usecs = lif->rx_coalesce_usecs;
	coalesce->rx_coalesce_usecs = lif->rx_coalesce_usecs;

	return 0;
	}

	static int ionic_set_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *coalesce)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic_identity *ident;
	struct ionic_qcq *qcq;
	unsigned int i;
	u32 coal;

	if (coalesce->rx_max_coalesced_frames \|\|
	coalesce->rx_coalesce_usecs_irq \|\|
	coalesce->rx_max_coalesced_frames_irq \|\|
	coalesce->tx_max_coalesced_frames \|\|
	coalesce->tx_coalesce_usecs_irq \|\|
	coalesce->tx_max_coalesced_frames_irq \|\|
	coalesce->stats_block_coalesce_usecs \|\|
	coalesce->use_adaptive_rx_coalesce \|\|
	coalesce->use_adaptive_tx_coalesce \|\|
	coalesce->pkt_rate_low \|\|
	coalesce->rx_coalesce_usecs_low \|\|
	coalesce->rx_max_coalesced_frames_low \|\|
	coalesce->tx_coalesce_usecs_low \|\|
	coalesce->tx_max_coalesced_frames_low \|\|
	coalesce->pkt_rate_high \|\|
	coalesce->rx_coalesce_usecs_high \|\|
	coalesce->rx_max_coalesced_frames_high \|\|
	coalesce->tx_coalesce_usecs_high \|\|
	coalesce->tx_max_coalesced_frames_high \|\|
	coalesce->rate_sample_interval)
	return -EINVAL;

	ident = &lif->ionic->ident;
	if (ident->dev.intr_coal_div == 0) {
	netdev_warn(netdev, "bad HW value in dev.intr_coal_div = %d\n",
	ident->dev.intr_coal_div);
	return -EIO;
	}

	/* Tx uses Rx interrupt, so only change Rx */
	if (coalesce->tx_coalesce_usecs != lif->rx_coalesce_usecs) {
	netdev_warn(netdev, "only the rx-usecs can be changed\n");
	return -EINVAL;
	}

	/* Convert the usec request to a HW useable value. If they asked
	* for non-zero and it resolved to zero, bump it up
	*/
	coal = ionic_coal_usec_to_hw(lif->ionic, coalesce->rx_coalesce_usecs);
	if (!coal && coalesce->rx_coalesce_usecs)
	coal = 1;

	if (coal > IONIC_INTR_CTRL_COAL_MAX)
	return -ERANGE;

	/* Save the new value */
	lif->rx_coalesce_usecs = coalesce->rx_coalesce_usecs;
	if (coal != lif->rx_coalesce_hw) {
	lif->rx_coalesce_hw = coal;

	if (test_bit(IONIC_LIF_UP, lif->state)) {
	for (i = 0; i < lif->nxqs; i++) {
	qcq = lif->rxqcqs[i].qcq;
	ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
	qcq->intr.index,
	lif->rx_coalesce_hw);
	}
	}
	}

	return 0;
	}

	static void ionic_get_ringparam(struct net_device *netdev,
	struct ethtool_ringparam *ring)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	ring->tx_max_pending = IONIC_MAX_TXRX_DESC;
	ring->tx_pending = lif->ntxq_descs;
	ring->rx_max_pending = IONIC_MAX_TXRX_DESC;
	ring->rx_pending = lif->nrxq_descs;
	}

	static int ionic_set_ringparam(struct net_device *netdev,
	struct ethtool_ringparam *ring)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	bool running;
	int err;

	if (ring->rx_mini_pending \|\| ring->rx_jumbo_pending) {
	netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n");
	return -EINVAL;
	}

	if (!is_power_of_2(ring->tx_pending) \|\|
	!is_power_of_2(ring->rx_pending)) {
	netdev_info(netdev, "Descriptor count must be a power of 2\n");
	return -EINVAL;
	}

	/* if nothing to do return success */
	if (ring->tx_pending == lif->ntxq_descs &&
	ring->rx_pending == lif->nrxq_descs)
	return 0;

	err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
	if (err)
	return err;

	running = test_bit(IONIC_LIF_UP, lif->state);
	if (running)
	ionic_stop(netdev);

	lif->ntxq_descs = ring->tx_pending;
	lif->nrxq_descs = ring->rx_pending;

	if (running)
	ionic_open(netdev);
	clear_bit(IONIC_LIF_QUEUE_RESET, lif->state);

	return 0;
	}

	static void ionic_get_channels(struct net_device *netdev,
	struct ethtool_channels *ch)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	/* report maximum channels */
	ch->max_combined = lif->ionic->ntxqs_per_lif;

	/* report current channels */
	ch->combined_count = lif->nxqs;
	}

	static int ionic_set_channels(struct net_device *netdev,
	struct ethtool_channels *ch)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	bool running;
	int err;

	if (!ch->combined_count \|\| ch->other_count \|\|
	ch->rx_count \|\| ch->tx_count)
	return -EINVAL;

	if (ch->combined_count == lif->nxqs)
	return 0;

	err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
	if (err)
	return err;

	running = test_bit(IONIC_LIF_UP, lif->state);
	if (running)
	ionic_stop(netdev);

	lif->nxqs = ch->combined_count;

	if (running)
	ionic_open(netdev);
	clear_bit(IONIC_LIF_QUEUE_RESET, lif->state);

	return 0;
	}

	static u32 ionic_get_priv_flags(struct net_device *netdev)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	u32 priv_flags = 0;

	if (test_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state))
	priv_flags \|= PRIV_F_SW_DBG_STATS;

	return priv_flags;
	}

	static int ionic_set_priv_flags(struct net_device *netdev, u32 priv_flags)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	u32 flags = lif->flags;

	clear_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state);
	if (priv_flags & PRIV_F_SW_DBG_STATS)
	set_bit(IONIC_LIF_SW_DEBUG_STATS, lif->state);

	if (flags != lif->flags)
	lif->flags = flags;

	return 0;
	}

	static int ionic_get_rxnfc(struct net_device *netdev,
	struct ethtool_rxnfc info, u32 rules)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	int err = 0;

	switch (info->cmd) {
	case ETHTOOL_GRXRINGS:
	info->data = lif->nxqs;
	break;
	default:
	netdev_err(netdev, "Command parameter %d is not supported\n",
	info->cmd);
	err = -EOPNOTSUPP;
	}

	return err;
	}

	static u32 ionic_get_rxfh_indir_size(struct net_device *netdev)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	return le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
	}

	static u32 ionic_get_rxfh_key_size(struct net_device *netdev)
	{
	return IONIC_RSS_HASH_KEY_SIZE;
	}

	static int ionic_get_rxfh(struct net_device netdev, u32 indir, u8 *key,
	u8 *hfunc)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	unsigned int i, tbl_sz;

	if (indir) {
	tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
	for (i = 0; i < tbl_sz; i++)
	indir[i] = lif->rss_ind_tbl[i];
	}

	if (key)
	memcpy(key, lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE);

	if (hfunc)
	*hfunc = ETH_RSS_HASH_TOP;

	return 0;
	}

	static int ionic_set_rxfh(struct net_device netdev, const u32 indir,
	const u8 *key, const u8 hfunc)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	int err;

	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
	return -EOPNOTSUPP;

	err = ionic_lif_rss_config(lif, lif->rss_types, key, indir);
	if (err)
	return err;

	return 0;
	}

	static int ionic_set_tunable(struct net_device *dev,
	const struct ethtool_tunable *tuna,
	const void *data)
	{
	struct ionic_lif *lif = netdev_priv(dev);

	switch (tuna->id) {
	case ETHTOOL_RX_COPYBREAK:
	lif->rx_copybreak = (u32 )data;
	break;
	default:
	return -EOPNOTSUPP;
	}

	return 0;
	}

	static int ionic_get_tunable(struct net_device *netdev,
	const struct ethtool_tunable tuna, void data)
	{
	struct ionic_lif *lif = netdev_priv(netdev);

	switch (tuna->id) {
	case ETHTOOL_RX_COPYBREAK:
	(u32 )data = lif->rx_copybreak;
	break;
	default:
	return -EOPNOTSUPP;
	}

	return 0;
	}

	static int ionic_get_module_info(struct net_device *netdev,
	struct ethtool_modinfo *modinfo)

	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic_dev *idev = &lif->ionic->idev;
	struct ionic_xcvr_status *xcvr;

	xcvr = &idev->port_info->status.xcvr;

	/* report the module data type and length */
	switch (xcvr->sprom[0]) {
	case 0x03: /* SFP */
	modinfo->type = ETH_MODULE_SFF_8079;
	modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
	break;
	case 0x0D: /* QSFP */
	case 0x11: /* QSFP28 */
	modinfo->type = ETH_MODULE_SFF_8436;
	modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
	break;
	default:
	netdev_info(netdev, "unknown xcvr type 0x%02x\n",
	xcvr->sprom[0]);
	break;
	}

	return 0;
	}

	static int ionic_get_module_eeprom(struct net_device *netdev,
	struct ethtool_eeprom *ee,
	u8 *data)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic_dev *idev = &lif->ionic->idev;
	struct ionic_xcvr_status *xcvr;
	char tbuf[sizeof(xcvr->sprom)];
	int count = 10;
	u32 len;

	/* The NIC keeps the module prom up-to-date in the DMA space
	* so we can simply copy the module bytes into the data buffer.
	*/
	xcvr = &idev->port_info->status.xcvr;
	len = min_t(u32, sizeof(xcvr->sprom), ee->len);

	do {
	memcpy(data, xcvr->sprom, len);
	memcpy(tbuf, xcvr->sprom, len);

	/* Let's make sure we got a consistent copy */
	if (!memcmp(data, tbuf, len))
	break;

	} while (--count);

	if (!count)
	return -ETIMEDOUT;

	return 0;
	}

	static int ionic_nway_reset(struct net_device *netdev)
	{
	struct ionic_lif *lif = netdev_priv(netdev);
	struct ionic *ionic = lif->ionic;
	int err = 0;

	/* flap the link to force auto-negotiation */

	mutex_lock(&ionic->dev_cmd_lock);

	ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_DOWN);
	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);

	if (!err) {
	ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
	}

	mutex_unlock(&ionic->dev_cmd_lock);

	return err;
	}

	static const struct ethtool_ops ionic_ethtool_ops = {
	.get_drvinfo = ionic_get_drvinfo,
	.get_regs_len = ionic_get_regs_len,
	.get_regs = ionic_get_regs,
	.get_link = ethtool_op_get_link,
	.get_link_ksettings = ionic_get_link_ksettings,
	.set_link_ksettings = ionic_set_link_ksettings,
	.get_coalesce = ionic_get_coalesce,
	.set_coalesce = ionic_set_coalesce,
	.get_ringparam = ionic_get_ringparam,
	.set_ringparam = ionic_set_ringparam,
	.get_channels = ionic_get_channels,
	.set_channels = ionic_set_channels,
	.get_strings = ionic_get_strings,
	.get_ethtool_stats = ionic_get_stats,
	.get_sset_count = ionic_get_sset_count,
	.get_priv_flags = ionic_get_priv_flags,
	.set_priv_flags = ionic_set_priv_flags,
	.get_rxnfc = ionic_get_rxnfc,
	.get_rxfh_indir_size = ionic_get_rxfh_indir_size,
	.get_rxfh_key_size = ionic_get_rxfh_key_size,
	.get_rxfh = ionic_get_rxfh,
	.set_rxfh = ionic_set_rxfh,
	.get_tunable = ionic_get_tunable,
	.set_tunable = ionic_set_tunable,
	.get_module_info = ionic_get_module_info,
	.get_module_eeprom = ionic_get_module_eeprom,
	.get_pauseparam = ionic_get_pauseparam,
	.set_pauseparam = ionic_set_pauseparam,
	.get_fecparam = ionic_get_fecparam,
	.set_fecparam = ionic_set_fecparam,
	.nway_reset = ionic_nway_reset,
	};

	void ionic_ethtool_set_ops(struct net_device *netdev)
	{
	netdev->ethtool_ops = &ionic_ethtool_ops;
	}