drivers/net/ixgbe/ixgbe_ethtool.c

/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2010 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

/* ethtool support for ixgbe */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include <linux/uaccess.h>

#include "ixgbe.h"


#define IXGBE_ALL_RAR_ENTRIES 16

enum {NETDEV_STATS, IXGBE_STATS};

struct ixgbe_stats {
	char stat_string[ETH_GSTRING_LEN];
	int type;
	int sizeof_stat;
	int stat_offset;
};

#define IXGBE_STAT(m)		IXGBE_STATS, \
				sizeof(((struct ixgbe_adapter *)0)->m), \
				offsetof(struct ixgbe_adapter, m)
#define IXGBE_NETDEV_STAT(m)	NETDEV_STATS, \
				sizeof(((struct net_device *)0)->m), \
				offsetof(struct net_device, m)

static struct ixgbe_stats ixgbe_gstrings_stats[] = {
	{"rx_packets", IXGBE_NETDEV_STAT(stats.rx_packets)},
	{"tx_packets", IXGBE_NETDEV_STAT(stats.tx_packets)},
	{"rx_bytes", IXGBE_NETDEV_STAT(stats.rx_bytes)},
	{"tx_bytes", IXGBE_NETDEV_STAT(stats.tx_bytes)},
	{"rx_pkts_nic", IXGBE_STAT(stats.gprc)},
	{"tx_pkts_nic", IXGBE_STAT(stats.gptc)},
	{"rx_bytes_nic", IXGBE_STAT(stats.gorc)},
	{"tx_bytes_nic", IXGBE_STAT(stats.gotc)},
	{"lsc_int", IXGBE_STAT(lsc_int)},
	{"tx_busy", IXGBE_STAT(tx_busy)},
	{"non_eop_descs", IXGBE_STAT(non_eop_descs)},
	{"rx_errors", IXGBE_NETDEV_STAT(stats.rx_errors)},
	{"tx_errors", IXGBE_NETDEV_STAT(stats.tx_errors)},
	{"rx_dropped", IXGBE_NETDEV_STAT(stats.rx_dropped)},
	{"tx_dropped", IXGBE_NETDEV_STAT(stats.tx_dropped)},
	{"multicast", IXGBE_NETDEV_STAT(stats.multicast)},
	{"broadcast", IXGBE_STAT(stats.bprc)},
	{"rx_no_buffer_count", IXGBE_STAT(stats.rnbc[0]) },
	{"collisions", IXGBE_NETDEV_STAT(stats.collisions)},
	{"rx_over_errors", IXGBE_NETDEV_STAT(stats.rx_over_errors)},
	{"rx_crc_errors", IXGBE_NETDEV_STAT(stats.rx_crc_errors)},
	{"rx_frame_errors", IXGBE_NETDEV_STAT(stats.rx_frame_errors)},
	{"hw_rsc_aggregated", IXGBE_STAT(rsc_total_count)},
	{"hw_rsc_flushed", IXGBE_STAT(rsc_total_flush)},
	{"fdir_match", IXGBE_STAT(stats.fdirmatch)},
	{"fdir_miss", IXGBE_STAT(stats.fdirmiss)},
	{"rx_fifo_errors", IXGBE_NETDEV_STAT(stats.rx_fifo_errors)},
	{"rx_missed_errors", IXGBE_NETDEV_STAT(stats.rx_missed_errors)},
	{"tx_aborted_errors", IXGBE_NETDEV_STAT(stats.tx_aborted_errors)},
	{"tx_carrier_errors", IXGBE_NETDEV_STAT(stats.tx_carrier_errors)},
	{"tx_fifo_errors", IXGBE_NETDEV_STAT(stats.tx_fifo_errors)},
	{"tx_heartbeat_errors", IXGBE_NETDEV_STAT(stats.tx_heartbeat_errors)},
	{"tx_timeout_count", IXGBE_STAT(tx_timeout_count)},
	{"tx_restart_queue", IXGBE_STAT(restart_queue)},
	{"rx_long_length_errors", IXGBE_STAT(stats.roc)},
	{"rx_short_length_errors", IXGBE_STAT(stats.ruc)},
	{"tx_flow_control_xon", IXGBE_STAT(stats.lxontxc)},
	{"rx_flow_control_xon", IXGBE_STAT(stats.lxonrxc)},
	{"tx_flow_control_xoff", IXGBE_STAT(stats.lxofftxc)},
	{"rx_flow_control_xoff", IXGBE_STAT(stats.lxoffrxc)},
	{"rx_csum_offload_errors", IXGBE_STAT(hw_csum_rx_error)},
	{"alloc_rx_page_failed", IXGBE_STAT(alloc_rx_page_failed)},
	{"alloc_rx_buff_failed", IXGBE_STAT(alloc_rx_buff_failed)},
	{"rx_no_dma_resources", IXGBE_STAT(hw_rx_no_dma_resources)},
#ifdef IXGBE_FCOE
	{"fcoe_bad_fccrc", IXGBE_STAT(stats.fccrc)},
	{"rx_fcoe_dropped", IXGBE_STAT(stats.fcoerpdc)},
	{"rx_fcoe_packets", IXGBE_STAT(stats.fcoeprc)},
	{"rx_fcoe_dwords", IXGBE_STAT(stats.fcoedwrc)},
	{"tx_fcoe_packets", IXGBE_STAT(stats.fcoeptc)},
	{"tx_fcoe_dwords", IXGBE_STAT(stats.fcoedwtc)},
#endif /* IXGBE_FCOE */
};

#define IXGBE_QUEUE_STATS_LEN \
	((((struct ixgbe_adapter *)netdev_priv(netdev))->num_tx_queues + \
	((struct ixgbe_adapter *)netdev_priv(netdev))->num_rx_queues) * \
	(sizeof(struct ixgbe_queue_stats) / sizeof(u64)))
#define IXGBE_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbe_gstrings_stats)
#define IXGBE_PB_STATS_LEN ( \
                 (((struct ixgbe_adapter *)netdev_priv(netdev))->flags & \
                 IXGBE_FLAG_DCB_ENABLED) ? \
                 (sizeof(((struct ixgbe_adapter *)0)->stats.pxonrxc) + \
                  sizeof(((struct ixgbe_adapter *)0)->stats.pxontxc) + \
                  sizeof(((struct ixgbe_adapter *)0)->stats.pxoffrxc) + \
                  sizeof(((struct ixgbe_adapter *)0)->stats.pxofftxc)) \
                  / sizeof(u64) : 0)
#define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + \
                         IXGBE_PB_STATS_LEN + \
                         IXGBE_QUEUE_STATS_LEN)

static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register test  (offline)", "Eeprom test    (offline)",
	"Interrupt test (offline)", "Loopback test  (offline)",
	"Link test   (on/offline)"
};
#define IXGBE_TEST_LEN sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN

static int ixgbe_get_settings(struct net_device *netdev,
                              struct ethtool_cmd *ecmd)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 link_speed = 0;
	bool link_up;

	ecmd->supported = SUPPORTED_10000baseT_Full;
	ecmd->autoneg = AUTONEG_ENABLE;
	ecmd->transceiver = XCVR_EXTERNAL;
	if ((hw->phy.media_type == ixgbe_media_type_copper) ||
	    (hw->phy.multispeed_fiber)) {
		ecmd->supported |= (SUPPORTED_1000baseT_Full |
		                    SUPPORTED_Autoneg);

		ecmd->advertising = ADVERTISED_Autoneg;
		if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10GB_FULL)
			ecmd->advertising |= ADVERTISED_10000baseT_Full;
		if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL)
			ecmd->advertising |= ADVERTISED_1000baseT_Full;
		/*
		 * It's possible that phy.autoneg_advertised may not be
		 * set yet.  If so display what the default would be -
		 * both 1G and 10G supported.
		 */
		if (!(ecmd->advertising & (ADVERTISED_1000baseT_Full |
					   ADVERTISED_10000baseT_Full)))
			ecmd->advertising |= (ADVERTISED_10000baseT_Full |
					      ADVERTISED_1000baseT_Full);

		if (hw->phy.media_type == ixgbe_media_type_copper) {
			ecmd->supported |= SUPPORTED_TP;
			ecmd->advertising |= ADVERTISED_TP;
			ecmd->port = PORT_TP;
		} else {
			ecmd->supported |= SUPPORTED_FIBRE;
			ecmd->advertising |= ADVERTISED_FIBRE;
			ecmd->port = PORT_FIBRE;
		}
	} else if (hw->phy.media_type == ixgbe_media_type_backplane) {
		/* Set as FIBRE until SERDES defined in kernel */
		if (hw->device_id == IXGBE_DEV_ID_82598_BX) {
			ecmd->supported = (SUPPORTED_1000baseT_Full |
					   SUPPORTED_FIBRE);
			ecmd->advertising = (ADVERTISED_1000baseT_Full |
					     ADVERTISED_FIBRE);
			ecmd->port = PORT_FIBRE;
			ecmd->autoneg = AUTONEG_DISABLE;
		} else {
			ecmd->supported |= (SUPPORTED_1000baseT_Full |
					    SUPPORTED_FIBRE);
			ecmd->advertising = (ADVERTISED_10000baseT_Full |
					     ADVERTISED_1000baseT_Full |
					     ADVERTISED_FIBRE);
			ecmd->port = PORT_FIBRE;
		}
	} else {
		ecmd->supported |= SUPPORTED_FIBRE;
		ecmd->advertising = (ADVERTISED_10000baseT_Full |
		                     ADVERTISED_FIBRE);
		ecmd->port = PORT_FIBRE;
		ecmd->autoneg = AUTONEG_DISABLE;
	}

	/* Get PHY type */
	switch (adapter->hw.phy.type) {
	case ixgbe_phy_tn:
	case ixgbe_phy_cu_unknown:
		/* Copper 10G-BASET */
		ecmd->port = PORT_TP;
		break;
	case ixgbe_phy_qt:
		ecmd->port = PORT_FIBRE;
		break;
	case ixgbe_phy_nl:
	case ixgbe_phy_sfp_passive_tyco:
	case ixgbe_phy_sfp_passive_unknown:
	case ixgbe_phy_sfp_ftl:
	case ixgbe_phy_sfp_avago:
	case ixgbe_phy_sfp_intel:
	case ixgbe_phy_sfp_unknown:
		switch (adapter->hw.phy.sfp_type) {
		/* SFP+ devices, further checking needed */
		case ixgbe_sfp_type_da_cu:
		case ixgbe_sfp_type_da_cu_core0:
		case ixgbe_sfp_type_da_cu_core1:
			ecmd->port = PORT_DA;
			break;
		case ixgbe_sfp_type_sr:
		case ixgbe_sfp_type_lr:
		case ixgbe_sfp_type_srlr_core0:
		case ixgbe_sfp_type_srlr_core1:
			ecmd->port = PORT_FIBRE;
			break;
		case ixgbe_sfp_type_not_present:
			ecmd->port = PORT_NONE;
			break;
		case ixgbe_sfp_type_1g_cu_core0:
		case ixgbe_sfp_type_1g_cu_core1:
			ecmd->port = PORT_TP;
			ecmd->supported = SUPPORTED_TP;
			ecmd->advertising = (ADVERTISED_1000baseT_Full |
			                     ADVERTISED_TP);
			break;
		case ixgbe_sfp_type_unknown:
		default:
			ecmd->port = PORT_OTHER;
			break;
		}
		break;
	case ixgbe_phy_xaui:
		ecmd->port = PORT_NONE;
		break;
	case ixgbe_phy_unknown:
	case ixgbe_phy_generic:
	case ixgbe_phy_sfp_unsupported:
	default:
		ecmd->port = PORT_OTHER;
		break;
	}

	hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
	if (link_up) {
		ecmd->speed = (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
		               SPEED_10000 : SPEED_1000;
		ecmd->duplex = DUPLEX_FULL;
	} else {
		ecmd->speed = -1;
		ecmd->duplex = -1;
	}

	return 0;
}

static int ixgbe_set_settings(struct net_device *netdev,
                              struct ethtool_cmd *ecmd)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 advertised, old;
	s32 err = 0;

	if ((hw->phy.media_type == ixgbe_media_type_copper) ||
	    (hw->phy.multispeed_fiber)) {
		/* 10000/copper and 1000/copper must autoneg
		 * this function does not support any duplex forcing, but can
		 * limit the advertising of the adapter to only 10000 or 1000 */
		if (ecmd->autoneg == AUTONEG_DISABLE)
			return -EINVAL;

		old = hw->phy.autoneg_advertised;
		advertised = 0;
		if (ecmd->advertising & ADVERTISED_10000baseT_Full)
			advertised |= IXGBE_LINK_SPEED_10GB_FULL;

		if (ecmd->advertising & ADVERTISED_1000baseT_Full)
			advertised |= IXGBE_LINK_SPEED_1GB_FULL;

		if (old == advertised)
			return err;
		/* this sets the link speed and restarts auto-neg */
		hw->mac.autotry_restart = true;
		err = hw->mac.ops.setup_link(hw, advertised, true, true);
		if (err) {
			e_info("setup link failed with code %d\n", err);
			hw->mac.ops.setup_link(hw, old, true, true);
		}
	} else {
		/* in this case we currently only support 10Gb/FULL */
		if ((ecmd->autoneg == AUTONEG_ENABLE) ||
		    (ecmd->advertising != ADVERTISED_10000baseT_Full) ||
		    (ecmd->speed + ecmd->duplex != SPEED_10000 + DUPLEX_FULL))
			return -EINVAL;
	}

	return err;
}

static void ixgbe_get_pauseparam(struct net_device *netdev,
                                 struct ethtool_pauseparam *pause)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;

	/*
	 * Flow Control Autoneg isn't on if
	 *  - we didn't ask for it OR
	 *  - it failed, we know this by tx & rx being off
	 */
	if (hw->fc.disable_fc_autoneg ||
	    (hw->fc.current_mode == ixgbe_fc_none))
		pause->autoneg = 0;
	else
		pause->autoneg = 1;

#ifdef CONFIG_DCB
	if (hw->fc.current_mode == ixgbe_fc_pfc) {
		pause->rx_pause = 0;
		pause->tx_pause = 0;
	}

#endif
	if (hw->fc.current_mode == ixgbe_fc_rx_pause) {
		pause->rx_pause = 1;
	} else if (hw->fc.current_mode == ixgbe_fc_tx_pause) {
		pause->tx_pause = 1;
	} else if (hw->fc.current_mode == ixgbe_fc_full) {
		pause->rx_pause = 1;
		pause->tx_pause = 1;
	}
}

static int ixgbe_set_pauseparam(struct net_device *netdev,
                                struct ethtool_pauseparam *pause)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	struct ixgbe_fc_info fc;

#ifdef CONFIG_DCB
	if (adapter->dcb_cfg.pfc_mode_enable ||
		((hw->mac.type == ixgbe_mac_82598EB) &&
		(adapter->flags & IXGBE_FLAG_DCB_ENABLED)))
		return -EINVAL;

#endif

	fc = hw->fc;

	if (pause->autoneg != AUTONEG_ENABLE)
		fc.disable_fc_autoneg = true;
	else
		fc.disable_fc_autoneg = false;

	if ((pause->rx_pause && pause->tx_pause) || pause->autoneg)
		fc.requested_mode = ixgbe_fc_full;
	else if (pause->rx_pause && !pause->tx_pause)
		fc.requested_mode = ixgbe_fc_rx_pause;
	else if (!pause->rx_pause && pause->tx_pause)
		fc.requested_mode = ixgbe_fc_tx_pause;
	else if (!pause->rx_pause && !pause->tx_pause)
		fc.requested_mode = ixgbe_fc_none;
	else
		return -EINVAL;

#ifdef CONFIG_DCB
	adapter->last_lfc_mode = fc.requested_mode;
#endif

	/* if the thing changed then we'll update and use new autoneg */
	if (memcmp(&fc, &hw->fc, sizeof(struct ixgbe_fc_info))) {
		hw->fc = fc;
		if (netif_running(netdev))
			ixgbe_reinit_locked(adapter);
		else
			ixgbe_reset(adapter);
	}

	return 0;
}

static u32 ixgbe_get_rx_csum(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	return (adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED);
}

static int ixgbe_set_rx_csum(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	if (data)
		adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
	else
		adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;

	if (netif_running(netdev))
		ixgbe_reinit_locked(adapter);
	else
		ixgbe_reset(adapter);

	return 0;
}

static u32 ixgbe_get_tx_csum(struct net_device *netdev)
{
	return (netdev->features & NETIF_F_IP_CSUM) != 0;
}

static int ixgbe_set_tx_csum(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (data) {
		netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
		if (adapter->hw.mac.type == ixgbe_mac_82599EB)
			netdev->features |= NETIF_F_SCTP_CSUM;
	} else {
		netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
		if (adapter->hw.mac.type == ixgbe_mac_82599EB)
			netdev->features &= ~NETIF_F_SCTP_CSUM;
	}

	return 0;
}

static int ixgbe_set_tso(struct net_device *netdev, u32 data)
{
	if (data) {
		netdev->features |= NETIF_F_TSO;
		netdev->features |= NETIF_F_TSO6;
	} else {
		netdev->features &= ~NETIF_F_TSO;
		netdev->features &= ~NETIF_F_TSO6;
	}
	return 0;
}

static u32 ixgbe_get_msglevel(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	return adapter->msg_enable;
}

static void ixgbe_set_msglevel(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	adapter->msg_enable = data;
}

static int ixgbe_get_regs_len(struct net_device *netdev)
{
#define IXGBE_REGS_LEN  1128
	return IXGBE_REGS_LEN * sizeof(u32);
}

#define IXGBE_GET_STAT(_A_, _R_) _A_->stats._R_

static void ixgbe_get_regs(struct net_device *netdev,
                           struct ethtool_regs *regs, void *p)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 *regs_buff = p;
	u8 i;

	memset(p, 0, IXGBE_REGS_LEN * sizeof(u32));

	regs->version = (1 << 24) | hw->revision_id << 16 | hw->device_id;

	/* General Registers */
	regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_CTRL);
	regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_STATUS);
	regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
	regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_ESDP);
	regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_EODSDP);
	regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
	regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_FRTIMER);
	regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_TCPTIMER);

	/* NVM Register */
	regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_EEC);
	regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_EERD);
	regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_FLA);
	regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_EEMNGCTL);
	regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_EEMNGDATA);
	regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_FLMNGCTL);
	regs_buff[14] = IXGBE_READ_REG(hw, IXGBE_FLMNGDATA);
	regs_buff[15] = IXGBE_READ_REG(hw, IXGBE_FLMNGCNT);
	regs_buff[16] = IXGBE_READ_REG(hw, IXGBE_FLOP);
	regs_buff[17] = IXGBE_READ_REG(hw, IXGBE_GRC);

	/* Interrupt */
	/* don't read EICR because it can clear interrupt causes, instead
	 * read EICS which is a shadow but doesn't clear EICR */
	regs_buff[18] = IXGBE_READ_REG(hw, IXGBE_EICS);
	regs_buff[19] = IXGBE_READ_REG(hw, IXGBE_EICS);
	regs_buff[20] = IXGBE_READ_REG(hw, IXGBE_EIMS);
	regs_buff[21] = IXGBE_READ_REG(hw, IXGBE_EIMC);
	regs_buff[22] = IXGBE_READ_REG(hw, IXGBE_EIAC);
	regs_buff[23] = IXGBE_READ_REG(hw, IXGBE_EIAM);
	regs_buff[24] = IXGBE_READ_REG(hw, IXGBE_EITR(0));
	regs_buff[25] = IXGBE_READ_REG(hw, IXGBE_IVAR(0));
	regs_buff[26] = IXGBE_READ_REG(hw, IXGBE_MSIXT);
	regs_buff[27] = IXGBE_READ_REG(hw, IXGBE_MSIXPBA);
	regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_PBACL(0));
	regs_buff[29] = IXGBE_READ_REG(hw, IXGBE_GPIE);

	/* Flow Control */
	regs_buff[30] = IXGBE_READ_REG(hw, IXGBE_PFCTOP);
	regs_buff[31] = IXGBE_READ_REG(hw, IXGBE_FCTTV(0));
	regs_buff[32] = IXGBE_READ_REG(hw, IXGBE_FCTTV(1));
	regs_buff[33] = IXGBE_READ_REG(hw, IXGBE_FCTTV(2));
	regs_buff[34] = IXGBE_READ_REG(hw, IXGBE_FCTTV(3));
	for (i = 0; i < 8; i++)
		regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_FCRTL(i));
	for (i = 0; i < 8; i++)
		regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_FCRTH(i));
	regs_buff[51] = IXGBE_READ_REG(hw, IXGBE_FCRTV);
	regs_buff[52] = IXGBE_READ_REG(hw, IXGBE_TFCS);

	/* Receive DMA */
	for (i = 0; i < 64; i++)
		regs_buff[53 + i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
	for (i = 0; i < 64; i++)
		regs_buff[117 + i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
	for (i = 0; i < 64; i++)
		regs_buff[181 + i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
	for (i = 0; i < 64; i++)
		regs_buff[245 + i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
	for (i = 0; i < 64; i++)
		regs_buff[309 + i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
	for (i = 0; i < 64; i++)
		regs_buff[373 + i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
	for (i = 0; i < 16; i++)
		regs_buff[437 + i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
	for (i = 0; i < 16; i++)
		regs_buff[453 + i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
	regs_buff[469] = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
	for (i = 0; i < 8; i++)
		regs_buff[470 + i] = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
	regs_buff[478] = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
	regs_buff[479] = IXGBE_READ_REG(hw, IXGBE_DROPEN);

	/* Receive */
	regs_buff[480] = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
	regs_buff[481] = IXGBE_READ_REG(hw, IXGBE_RFCTL);
	for (i = 0; i < 16; i++)
		regs_buff[482 + i] = IXGBE_READ_REG(hw, IXGBE_RAL(i));
	for (i = 0; i < 16; i++)
		regs_buff[498 + i] = IXGBE_READ_REG(hw, IXGBE_RAH(i));
	regs_buff[514] = IXGBE_READ_REG(hw, IXGBE_PSRTYPE(0));
	regs_buff[515] = IXGBE_READ_REG(hw, IXGBE_FCTRL);
	regs_buff[516] = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
	regs_buff[517] = IXGBE_READ_REG(hw, IXGBE_MCSTCTRL);
	regs_buff[518] = IXGBE_READ_REG(hw, IXGBE_MRQC);
	regs_buff[519] = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
	for (i = 0; i < 8; i++)
		regs_buff[520 + i] = IXGBE_READ_REG(hw, IXGBE_IMIR(i));
	for (i = 0; i < 8; i++)
		regs_buff[528 + i] = IXGBE_READ_REG(hw, IXGBE_IMIREXT(i));
	regs_buff[536] = IXGBE_READ_REG(hw, IXGBE_IMIRVP);

	/* Transmit */
	for (i = 0; i < 32; i++)
		regs_buff[537 + i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
	for (i = 0; i < 32; i++)
		regs_buff[569 + i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
	for (i = 0; i < 32; i++)
		regs_buff[601 + i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
	for (i = 0; i < 32; i++)
		regs_buff[633 + i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
	for (i = 0; i < 32; i++)
		regs_buff[665 + i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
	for (i = 0; i < 32; i++)
		regs_buff[697 + i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
	for (i = 0; i < 32; i++)
		regs_buff[729 + i] = IXGBE_READ_REG(hw, IXGBE_TDWBAL(i));
	for (i = 0; i < 32; i++)
		regs_buff[761 + i] = IXGBE_READ_REG(hw, IXGBE_TDWBAH(i));
	regs_buff[793] = IXGBE_READ_REG(hw, IXGBE_DTXCTL);
	for (i = 0; i < 16; i++)
		regs_buff[794 + i] = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i));
	regs_buff[810] = IXGBE_READ_REG(hw, IXGBE_TIPG);
	for (i = 0; i < 8; i++)
		regs_buff[811 + i] = IXGBE_READ_REG(hw, IXGBE_TXPBSIZE(i));
	regs_buff[819] = IXGBE_READ_REG(hw, IXGBE_MNGTXMAP);

	/* Wake Up */
	regs_buff[820] = IXGBE_READ_REG(hw, IXGBE_WUC);
	regs_buff[821] = IXGBE_READ_REG(hw, IXGBE_WUFC);
	regs_buff[822] = IXGBE_READ_REG(hw, IXGBE_WUS);
	regs_buff[823] = IXGBE_READ_REG(hw, IXGBE_IPAV);
	regs_buff[824] = IXGBE_READ_REG(hw, IXGBE_IP4AT);
	regs_buff[825] = IXGBE_READ_REG(hw, IXGBE_IP6AT);
	regs_buff[826] = IXGBE_READ_REG(hw, IXGBE_WUPL);
	regs_buff[827] = IXGBE_READ_REG(hw, IXGBE_WUPM);
	regs_buff[828] = IXGBE_READ_REG(hw, IXGBE_FHFT(0));

	regs_buff[829] = IXGBE_READ_REG(hw, IXGBE_RMCS);
	regs_buff[830] = IXGBE_READ_REG(hw, IXGBE_DPMCS);
	regs_buff[831] = IXGBE_READ_REG(hw, IXGBE_PDPMCS);
	regs_buff[832] = IXGBE_READ_REG(hw, IXGBE_RUPPBMR);
	for (i = 0; i < 8; i++)
		regs_buff[833 + i] = IXGBE_READ_REG(hw, IXGBE_RT2CR(i));
	for (i = 0; i < 8; i++)
		regs_buff[841 + i] = IXGBE_READ_REG(hw, IXGBE_RT2SR(i));
	for (i = 0; i < 8; i++)
		regs_buff[849 + i] = IXGBE_READ_REG(hw, IXGBE_TDTQ2TCCR(i));
	for (i = 0; i < 8; i++)
		regs_buff[857 + i] = IXGBE_READ_REG(hw, IXGBE_TDTQ2TCSR(i));
	for (i = 0; i < 8; i++)
		regs_buff[865 + i] = IXGBE_READ_REG(hw, IXGBE_TDPT2TCCR(i));
	for (i = 0; i < 8; i++)
		regs_buff[873 + i] = IXGBE_READ_REG(hw, IXGBE_TDPT2TCSR(i));

	/* Statistics */
	regs_buff[881] = IXGBE_GET_STAT(adapter, crcerrs);
	regs_buff[882] = IXGBE_GET_STAT(adapter, illerrc);
	regs_buff[883] = IXGBE_GET_STAT(adapter, errbc);
	regs_buff[884] = IXGBE_GET_STAT(adapter, mspdc);
	for (i = 0; i < 8; i++)
		regs_buff[885 + i] = IXGBE_GET_STAT(adapter, mpc[i]);
	regs_buff[893] = IXGBE_GET_STAT(adapter, mlfc);
	regs_buff[894] = IXGBE_GET_STAT(adapter, mrfc);
	regs_buff[895] = IXGBE_GET_STAT(adapter, rlec);
	regs_buff[896] = IXGBE_GET_STAT(adapter, lxontxc);
	regs_buff[897] = IXGBE_GET_STAT(adapter, lxonrxc);
	regs_buff[898] = IXGBE_GET_STAT(adapter, lxofftxc);
	regs_buff[899] = IXGBE_GET_STAT(adapter, lxoffrxc);
	for (i = 0; i < 8; i++)
		regs_buff[900 + i] = IXGBE_GET_STAT(adapter, pxontxc[i]);
	for (i = 0; i < 8; i++)
		regs_buff[908 + i] = IXGBE_GET_STAT(adapter, pxonrxc[i]);
	for (i = 0; i < 8; i++)
		regs_buff[916 + i] = IXGBE_GET_STAT(adapter, pxofftxc[i]);
	for (i = 0; i < 8; i++)
		regs_buff[924 + i] = IXGBE_GET_STAT(adapter, pxoffrxc[i]);
	regs_buff[932] = IXGBE_GET_STAT(adapter, prc64);
	regs_buff[933] = IXGBE_GET_STAT(adapter, prc127);
	regs_buff[934] = IXGBE_GET_STAT(adapter, prc255);
	regs_buff[935] = IXGBE_GET_STAT(adapter, prc511);
	regs_buff[936] = IXGBE_GET_STAT(adapter, prc1023);
	regs_buff[937] = IXGBE_GET_STAT(adapter, prc1522);
	regs_buff[938] = IXGBE_GET_STAT(adapter, gprc);
	regs_buff[939] = IXGBE_GET_STAT(adapter, bprc);
	regs_buff[940] = IXGBE_GET_STAT(adapter, mprc);
	regs_buff[941] = IXGBE_GET_STAT(adapter, gptc);
	regs_buff[942] = IXGBE_GET_STAT(adapter, gorc);
	regs_buff[944] = IXGBE_GET_STAT(adapter, gotc);
	for (i = 0; i < 8; i++)
		regs_buff[946 + i] = IXGBE_GET_STAT(adapter, rnbc[i]);
	regs_buff[954] = IXGBE_GET_STAT(adapter, ruc);
	regs_buff[955] = IXGBE_GET_STAT(adapter, rfc);
	regs_buff[956] = IXGBE_GET_STAT(adapter, roc);
	regs_buff[957] = IXGBE_GET_STAT(adapter, rjc);
	regs_buff[958] = IXGBE_GET_STAT(adapter, mngprc);
	regs_buff[959] = IXGBE_GET_STAT(adapter, mngpdc);
	regs_buff[960] = IXGBE_GET_STAT(adapter, mngptc);
	regs_buff[961] = IXGBE_GET_STAT(adapter, tor);
	regs_buff[963] = IXGBE_GET_STAT(adapter, tpr);
	regs_buff[964] = IXGBE_GET_STAT(adapter, tpt);
	regs_buff[965] = IXGBE_GET_STAT(adapter, ptc64);
	regs_buff[966] = IXGBE_GET_STAT(adapter, ptc127);
	regs_buff[967] = IXGBE_GET_STAT(adapter, ptc255);
	regs_buff[968] = IXGBE_GET_STAT(adapter, ptc511);
	regs_buff[969] = IXGBE_GET_STAT(adapter, ptc1023);
	regs_buff[970] = IXGBE_GET_STAT(adapter, ptc1522);
	regs_buff[971] = IXGBE_GET_STAT(adapter, mptc);
	regs_buff[972] = IXGBE_GET_STAT(adapter, bptc);
	regs_buff[973] = IXGBE_GET_STAT(adapter, xec);
	for (i = 0; i < 16; i++)
		regs_buff[974 + i] = IXGBE_GET_STAT(adapter, qprc[i]);
	for (i = 0; i < 16; i++)
		regs_buff[990 + i] = IXGBE_GET_STAT(adapter, qptc[i]);
	for (i = 0; i < 16; i++)
		regs_buff[1006 + i] = IXGBE_GET_STAT(adapter, qbrc[i]);
	for (i = 0; i < 16; i++)
		regs_buff[1022 + i] = IXGBE_GET_STAT(adapter, qbtc[i]);

	/* MAC */
	regs_buff[1038] = IXGBE_READ_REG(hw, IXGBE_PCS1GCFIG);
	regs_buff[1039] = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
	regs_buff[1040] = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
	regs_buff[1041] = IXGBE_READ_REG(hw, IXGBE_PCS1GDBG0);
	regs_buff[1042] = IXGBE_READ_REG(hw, IXGBE_PCS1GDBG1);
	regs_buff[1043] = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
	regs_buff[1044] = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
	regs_buff[1045] = IXGBE_READ_REG(hw, IXGBE_PCS1GANNP);
	regs_buff[1046] = IXGBE_READ_REG(hw, IXGBE_PCS1GANLPNP);
	regs_buff[1047] = IXGBE_READ_REG(hw, IXGBE_HLREG0);
	regs_buff[1048] = IXGBE_READ_REG(hw, IXGBE_HLREG1);
	regs_buff[1049] = IXGBE_READ_REG(hw, IXGBE_PAP);
	regs_buff[1050] = IXGBE_READ_REG(hw, IXGBE_MACA);
	regs_buff[1051] = IXGBE_READ_REG(hw, IXGBE_APAE);
	regs_buff[1052] = IXGBE_READ_REG(hw, IXGBE_ARD);
	regs_buff[1053] = IXGBE_READ_REG(hw, IXGBE_AIS);
	regs_buff[1054] = IXGBE_READ_REG(hw, IXGBE_MSCA);
	regs_buff[1055] = IXGBE_READ_REG(hw, IXGBE_MSRWD);
	regs_buff[1056] = IXGBE_READ_REG(hw, IXGBE_MLADD);
	regs_buff[1057] = IXGBE_READ_REG(hw, IXGBE_MHADD);
	regs_buff[1058] = IXGBE_READ_REG(hw, IXGBE_TREG);
	regs_buff[1059] = IXGBE_READ_REG(hw, IXGBE_PCSS1);
	regs_buff[1060] = IXGBE_READ_REG(hw, IXGBE_PCSS2);
	regs_buff[1061] = IXGBE_READ_REG(hw, IXGBE_XPCSS);
	regs_buff[1062] = IXGBE_READ_REG(hw, IXGBE_SERDESC);
	regs_buff[1063] = IXGBE_READ_REG(hw, IXGBE_MACS);
	regs_buff[1064] = IXGBE_READ_REG(hw, IXGBE_AUTOC);
	regs_buff[1065] = IXGBE_READ_REG(hw, IXGBE_LINKS);
	regs_buff[1066] = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
	regs_buff[1067] = IXGBE_READ_REG(hw, IXGBE_AUTOC3);
	regs_buff[1068] = IXGBE_READ_REG(hw, IXGBE_ANLP1);
	regs_buff[1069] = IXGBE_READ_REG(hw, IXGBE_ANLP2);
	regs_buff[1070] = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);

	/* Diagnostic */
	regs_buff[1071] = IXGBE_READ_REG(hw, IXGBE_RDSTATCTL);
	for (i = 0; i < 8; i++)
		regs_buff[1072 + i] = IXGBE_READ_REG(hw, IXGBE_RDSTAT(i));
	regs_buff[1080] = IXGBE_READ_REG(hw, IXGBE_RDHMPN);
	for (i = 0; i < 4; i++)
		regs_buff[1081 + i] = IXGBE_READ_REG(hw, IXGBE_RIC_DW(i));
	regs_buff[1085] = IXGBE_READ_REG(hw, IXGBE_RDPROBE);
	regs_buff[1086] = IXGBE_READ_REG(hw, IXGBE_TDSTATCTL);
	for (i = 0; i < 8; i++)
		regs_buff[1087 + i] = IXGBE_READ_REG(hw, IXGBE_TDSTAT(i));
	regs_buff[1095] = IXGBE_READ_REG(hw, IXGBE_TDHMPN);
	for (i = 0; i < 4; i++)
		regs_buff[1096 + i] = IXGBE_READ_REG(hw, IXGBE_TIC_DW(i));
	regs_buff[1100] = IXGBE_READ_REG(hw, IXGBE_TDPROBE);
	regs_buff[1101] = IXGBE_READ_REG(hw, IXGBE_TXBUFCTRL);
	regs_buff[1102] = IXGBE_READ_REG(hw, IXGBE_TXBUFDATA0);
	regs_buff[1103] = IXGBE_READ_REG(hw, IXGBE_TXBUFDATA1);
	regs_buff[1104] = IXGBE_READ_REG(hw, IXGBE_TXBUFDATA2);
	regs_buff[1105] = IXGBE_READ_REG(hw, IXGBE_TXBUFDATA3);
	regs_buff[1106] = IXGBE_READ_REG(hw, IXGBE_RXBUFCTRL);
	regs_buff[1107] = IXGBE_READ_REG(hw, IXGBE_RXBUFDATA0);
	regs_buff[1108] = IXGBE_READ_REG(hw, IXGBE_RXBUFDATA1);
	regs_buff[1109] = IXGBE_READ_REG(hw, IXGBE_RXBUFDATA2);
	regs_buff[1110] = IXGBE_READ_REG(hw, IXGBE_RXBUFDATA3);
	for (i = 0; i < 8; i++)
		regs_buff[1111 + i] = IXGBE_READ_REG(hw, IXGBE_PCIE_DIAG(i));
	regs_buff[1119] = IXGBE_READ_REG(hw, IXGBE_RFVAL);
	regs_buff[1120] = IXGBE_READ_REG(hw, IXGBE_MDFTC1);
	regs_buff[1121] = IXGBE_READ_REG(hw, IXGBE_MDFTC2);
	regs_buff[1122] = IXGBE_READ_REG(hw, IXGBE_MDFTFIFO1);
	regs_buff[1123] = IXGBE_READ_REG(hw, IXGBE_MDFTFIFO2);
	regs_buff[1124] = IXGBE_READ_REG(hw, IXGBE_MDFTS);
	regs_buff[1125] = IXGBE_READ_REG(hw, IXGBE_PCIEECCCTL);
	regs_buff[1126] = IXGBE_READ_REG(hw, IXGBE_PBTXECC);
	regs_buff[1127] = IXGBE_READ_REG(hw, IXGBE_PBRXECC);
}

static int ixgbe_get_eeprom_len(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	return adapter->hw.eeprom.word_size * 2;
}

static int ixgbe_get_eeprom(struct net_device *netdev,
                            struct ethtool_eeprom *eeprom, u8 *bytes)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u16 *eeprom_buff;
	int first_word, last_word, eeprom_len;
	int ret_val = 0;
	u16 i;

	if (eeprom->len == 0)
		return -EINVAL;

	eeprom->magic = hw->vendor_id | (hw->device_id << 16);

	first_word = eeprom->offset >> 1;
	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
	eeprom_len = last_word - first_word + 1;

	eeprom_buff = kmalloc(sizeof(u16) * eeprom_len, GFP_KERNEL);
	if (!eeprom_buff)
		return -ENOMEM;

	for (i = 0; i < eeprom_len; i++) {
		if ((ret_val = hw->eeprom.ops.read(hw, first_word + i,
		    &eeprom_buff[i])))
			break;
	}

	/* Device's eeprom is always little-endian, word addressable */
	for (i = 0; i < eeprom_len; i++)
		le16_to_cpus(&eeprom_buff[i]);

	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
	kfree(eeprom_buff);

	return ret_val;
}

static void ixgbe_get_drvinfo(struct net_device *netdev,
                              struct ethtool_drvinfo *drvinfo)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	char firmware_version[32];

	strncpy(drvinfo->driver, ixgbe_driver_name, 32);
	strncpy(drvinfo->version, ixgbe_driver_version, 32);

	sprintf(firmware_version, "%d.%d-%d",
	        (adapter->eeprom_version & 0xF000) >> 12,
	        (adapter->eeprom_version & 0x0FF0) >> 4,
	        adapter->eeprom_version & 0x000F);

	strncpy(drvinfo->fw_version, firmware_version, 32);
	strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
	drvinfo->n_stats = IXGBE_STATS_LEN;
	drvinfo->testinfo_len = IXGBE_TEST_LEN;
	drvinfo->regdump_len = ixgbe_get_regs_len(netdev);
}

static void ixgbe_get_ringparam(struct net_device *netdev,
                                struct ethtool_ringparam *ring)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
	struct ixgbe_ring *rx_ring = adapter->rx_ring[0];

	ring->rx_max_pending = IXGBE_MAX_RXD;
	ring->tx_max_pending = IXGBE_MAX_TXD;
	ring->rx_mini_max_pending = 0;
	ring->rx_jumbo_max_pending = 0;
	ring->rx_pending = rx_ring->count;
	ring->tx_pending = tx_ring->count;
	ring->rx_mini_pending = 0;
	ring->rx_jumbo_pending = 0;
}

static int ixgbe_set_ringparam(struct net_device *netdev,
                               struct ethtool_ringparam *ring)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_ring *temp_tx_ring, *temp_rx_ring;
	int i, err = 0;
	u32 new_rx_count, new_tx_count;
	bool need_update = false;

	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
		return -EINVAL;

	new_rx_count = max(ring->rx_pending, (u32)IXGBE_MIN_RXD);
	new_rx_count = min(new_rx_count, (u32)IXGBE_MAX_RXD);
	new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);

	new_tx_count = max(ring->tx_pending, (u32)IXGBE_MIN_TXD);
	new_tx_count = min(new_tx_count, (u32)IXGBE_MAX_TXD);
	new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);

	if ((new_tx_count == adapter->tx_ring[0]->count) &&
	    (new_rx_count == adapter->rx_ring[0]->count)) {
		/* nothing to do */
		return 0;
	}

	while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
		msleep(1);

	if (!netif_running(adapter->netdev)) {
		for (i = 0; i < adapter->num_tx_queues; i++)
			adapter->tx_ring[i]->count = new_tx_count;
		for (i = 0; i < adapter->num_rx_queues; i++)
			adapter->rx_ring[i]->count = new_rx_count;
		adapter->tx_ring_count = new_tx_count;
		adapter->rx_ring_count = new_rx_count;
		goto clear_reset;
	}

	temp_tx_ring = vmalloc(adapter->num_tx_queues * sizeof(struct ixgbe_ring));
	if (!temp_tx_ring) {
		err = -ENOMEM;
		goto clear_reset;
	}

	if (new_tx_count != adapter->tx_ring_count) {
		for (i = 0; i < adapter->num_tx_queues; i++) {
			memcpy(&temp_tx_ring[i], adapter->tx_ring[i],
			       sizeof(struct ixgbe_ring));
			temp_tx_ring[i].count = new_tx_count;
			err = ixgbe_setup_tx_resources(adapter,
			                               &temp_tx_ring[i]);
			if (err) {
				while (i) {
					i--;
					ixgbe_free_tx_resources(adapter,
					                      &temp_tx_ring[i]);
				}
				goto clear_reset;
			}
		}
		need_update = true;
	}

	temp_rx_ring = vmalloc(adapter->num_rx_queues * sizeof(struct ixgbe_ring));
	if (!temp_rx_ring) {
		err = -ENOMEM;
		goto err_setup;
	}

	if (new_rx_count != adapter->rx_ring_count) {
		for (i = 0; i < adapter->num_rx_queues; i++) {
			memcpy(&temp_rx_ring[i], adapter->rx_ring[i],
			       sizeof(struct ixgbe_ring));
			temp_rx_ring[i].count = new_rx_count;
			err = ixgbe_setup_rx_resources(adapter,
			                               &temp_rx_ring[i]);
			if (err) {
				while (i) {
					i--;
					ixgbe_free_rx_resources(adapter,
					                      &temp_rx_ring[i]);
				}
				goto err_setup;
			}
		}
		need_update = true;
	}

	/* if rings need to be updated, here's the place to do it in one shot */
	if (need_update) {
		ixgbe_down(adapter);

		/* tx */
		if (new_tx_count != adapter->tx_ring_count) {
			for (i = 0; i < adapter->num_tx_queues; i++) {
				ixgbe_free_tx_resources(adapter,
				                        adapter->tx_ring[i]);
				memcpy(adapter->tx_ring[i], &temp_tx_ring[i],
				       sizeof(struct ixgbe_ring));
			}
			adapter->tx_ring_count = new_tx_count;
		}

		/* rx */
		if (new_rx_count != adapter->rx_ring_count) {
			for (i = 0; i < adapter->num_rx_queues; i++) {
				ixgbe_free_rx_resources(adapter,
				                        adapter->rx_ring[i]);
				memcpy(adapter->rx_ring[i], &temp_rx_ring[i],
				       sizeof(struct ixgbe_ring));
			}
			adapter->rx_ring_count = new_rx_count;
		}
		ixgbe_up(adapter);
	}

	vfree(temp_rx_ring);
err_setup:
	vfree(temp_tx_ring);
clear_reset:
	clear_bit(__IXGBE_RESETTING, &adapter->state);
	return err;
}

static int ixgbe_get_sset_count(struct net_device *netdev, int sset)
{
	switch (sset) {
	case ETH_SS_TEST:
		return IXGBE_TEST_LEN;
	case ETH_SS_STATS:
		return IXGBE_STATS_LEN;
	case ETH_SS_NTUPLE_FILTERS:
		return (ETHTOOL_MAX_NTUPLE_LIST_ENTRY *
		        ETHTOOL_MAX_NTUPLE_STRING_PER_ENTRY);
	default:
		return -EOPNOTSUPP;
	}
}

static void ixgbe_get_ethtool_stats(struct net_device *netdev,
                                    struct ethtool_stats *stats, u64 *data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	u64 *queue_stat;
	int stat_count = sizeof(struct ixgbe_queue_stats) / sizeof(u64);
	int j, k;
	int i;
	char *p = NULL;

	ixgbe_update_stats(adapter);
	dev_get_stats(netdev);
	for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
		switch (ixgbe_gstrings_stats[i].type) {
		case NETDEV_STATS:
			p = (char *) netdev +
					ixgbe_gstrings_stats[i].stat_offset;
			break;
		case IXGBE_STATS:
			p = (char *) adapter +
					ixgbe_gstrings_stats[i].stat_offset;
			break;
		}

		data[i] = (ixgbe_gstrings_stats[i].sizeof_stat ==
		           sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
	for (j = 0; j < adapter->num_tx_queues; j++) {
		queue_stat = (u64 *)&adapter->tx_ring[j]->stats;
		for (k = 0; k < stat_count; k++)
			data[i + k] = queue_stat[k];
		i += k;
	}
	for (j = 0; j < adapter->num_rx_queues; j++) {
		queue_stat = (u64 *)&adapter->rx_ring[j]->stats;
		for (k = 0; k < stat_count; k++)
			data[i + k] = queue_stat[k];
		i += k;
	}
	if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
		for (j = 0; j < MAX_TX_PACKET_BUFFERS; j++) {
			data[i++] = adapter->stats.pxontxc[j];
			data[i++] = adapter->stats.pxofftxc[j];
		}
		for (j = 0; j < MAX_RX_PACKET_BUFFERS; j++) {
			data[i++] = adapter->stats.pxonrxc[j];
			data[i++] = adapter->stats.pxoffrxc[j];
		}
	}
}

static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,
                              u8 *data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	char *p = (char *)data;
	int i;

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, *ixgbe_gstrings_test,
		       IXGBE_TEST_LEN * ETH_GSTRING_LEN);
		break;
	case ETH_SS_STATS:
		for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
			memcpy(p, ixgbe_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_tx_queues; i++) {
			sprintf(p, "tx_queue_%u_packets", i);
			p += ETH_GSTRING_LEN;
			sprintf(p, "tx_queue_%u_bytes", i);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_rx_queues; i++) {
			sprintf(p, "rx_queue_%u_packets", i);
			p += ETH_GSTRING_LEN;
			sprintf(p, "rx_queue_%u_bytes", i);
			p += ETH_GSTRING_LEN;
		}
		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
			for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
				sprintf(p, "tx_pb_%u_pxon", i);
				p += ETH_GSTRING_LEN;
				sprintf(p, "tx_pb_%u_pxoff", i);
				p += ETH_GSTRING_LEN;
			}
			for (i = 0; i < MAX_RX_PACKET_BUFFERS; i++) {
				sprintf(p, "rx_pb_%u_pxon", i);
				p += ETH_GSTRING_LEN;
				sprintf(p, "rx_pb_%u_pxoff", i);
				p += ETH_GSTRING_LEN;
			}
		}
		/* BUG_ON(p - data != IXGBE_STATS_LEN * ETH_GSTRING_LEN); */
		break;
	}
}

static int ixgbe_link_test(struct ixgbe_adapter *adapter, u64 *data)
{
	struct ixgbe_hw *hw = &adapter->hw;
	bool link_up;
	u32 link_speed = 0;
	*data = 0;

	hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
	if (link_up)
		return *data;
	else
		*data = 1;
	return *data;
}

/* ethtool register test data */
struct ixgbe_reg_test {
	u16 reg;
	u8  array_len;
	u8  test_type;
	u32 mask;
	u32 write;
};

/* In the hardware, registers are laid out either singly, in arrays
 * spaced 0x40 bytes apart, or in contiguous tables.  We assume
 * most tests take place on arrays or single registers (handled
 * as a single-element array) and special-case the tables.
 * Table tests are always pattern tests.
 *
 * We also make provision for some required setup steps by specifying
 * registers to be written without any read-back testing.
 */

#define PATTERN_TEST	1
#define SET_READ_TEST	2
#define WRITE_NO_TEST	3
#define TABLE32_TEST	4
#define TABLE64_TEST_LO	5
#define TABLE64_TEST_HI	6

/* default 82599 register test */
static struct ixgbe_reg_test reg_test_82599[] = {
	{ IXGBE_FCRTL_82599(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_FCRTH_82599(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_PFCTOP, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VLNCTRL, 1, PATTERN_TEST, 0x00000000, 0x00000000 },
	{ IXGBE_RDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
	{ IXGBE_RDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_RDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
	{ IXGBE_RXDCTL(0), 4, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
	{ IXGBE_RDT(0), 4, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
	{ IXGBE_RXDCTL(0), 4, WRITE_NO_TEST, 0, 0 },
	{ IXGBE_FCRTH(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_FCTTV(0), 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_TDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
	{ IXGBE_TDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_TDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
	{ IXGBE_RXCTRL, 1, SET_READ_TEST, 0x00000001, 0x00000001 },
	{ IXGBE_RAL(0), 16, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_RAL(0), 16, TABLE64_TEST_HI, 0x8001FFFF, 0x800CFFFF },
	{ IXGBE_MTA(0), 128, TABLE32_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ 0, 0, 0, 0 }
};

/* default 82598 register test */
static struct ixgbe_reg_test reg_test_82598[] = {
	{ IXGBE_FCRTL(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_FCRTH(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_PFCTOP, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VLNCTRL, 1, PATTERN_TEST, 0x00000000, 0x00000000 },
	{ IXGBE_RDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
	{ IXGBE_RDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_RDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
	/* Enable all four RX queues before testing. */
	{ IXGBE_RXDCTL(0), 4, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
	/* RDH is read-only for 82598, only test RDT. */
	{ IXGBE_RDT(0), 4, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
	{ IXGBE_RXDCTL(0), 4, WRITE_NO_TEST, 0, 0 },
	{ IXGBE_FCRTH(0), 1, PATTERN_TEST, 0x8007FFF0, 0x8007FFF0 },
	{ IXGBE_FCTTV(0), 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_TIPG, 1, PATTERN_TEST, 0x000000FF, 0x000000FF },
	{ IXGBE_TDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
	{ IXGBE_TDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_TDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
	{ IXGBE_RXCTRL, 1, SET_READ_TEST, 0x00000003, 0x00000003 },
	{ IXGBE_DTXCTL, 1, SET_READ_TEST, 0x00000005, 0x00000005 },
	{ IXGBE_RAL(0), 16, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_RAL(0), 16, TABLE64_TEST_HI, 0x800CFFFF, 0x800CFFFF },
	{ IXGBE_MTA(0), 128, TABLE32_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ 0, 0, 0, 0 }
};

#define REG_PATTERN_TEST(R, M, W)                                             \
{                                                                             \
	u32 pat, val, before;                                                 \
	const u32 _test[] = {0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF}; \
	for (pat = 0; pat < ARRAY_SIZE(_test); pat++) {                       \
		before = readl(adapter->hw.hw_addr + R);                      \
		writel((_test[pat] & W), (adapter->hw.hw_addr + R));          \
		val = readl(adapter->hw.hw_addr + R);                         \
		if (val != (_test[pat] & W & M)) {                            \
			e_err("pattern test reg %04X failed: got "	\
			      "0x%08X expected 0x%08X\n",		\
			      R, val, (_test[pat] & W & M));                \
			*data = R;                                            \
			writel(before, adapter->hw.hw_addr + R);              \
			return 1;                                             \
		}                                                             \
		writel(before, adapter->hw.hw_addr + R);                      \
	}                                                                     \
}

#define REG_SET_AND_CHECK(R, M, W)                                            \
{                                                                             \
	u32 val, before;                                                      \
	before = readl(adapter->hw.hw_addr + R);                              \
	writel((W & M), (adapter->hw.hw_addr + R));                           \
	val = readl(adapter->hw.hw_addr + R);                                 \
	if ((W & M) != (val & M)) {                                           \
		e_err("set/check reg %04X test failed: got 0x%08X "	\
		      "expected 0x%08X\n", R, (val & M), (W & M));	\
		*data = R;                                                    \
		writel(before, (adapter->hw.hw_addr + R));                    \
		return 1;                                                     \
	}                                                                     \
	writel(before, (adapter->hw.hw_addr + R));                            \
}

static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data)
{
	struct ixgbe_reg_test *test;
	u32 value, before, after;
	u32 i, toggle;

	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
		toggle = 0x7FFFF30F;
		test = reg_test_82599;
	} else {
		toggle = 0x7FFFF3FF;
		test = reg_test_82598;
	}

	/*
	 * Because the status register is such a special case,
	 * we handle it separately from the rest of the register
	 * tests.  Some bits are read-only, some toggle, and some
	 * are writeable on newer MACs.
	 */
	before = IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS);
	value = (IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS) & toggle);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_STATUS, toggle);
	after = IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS) & toggle;
	if (value != after) {
		e_err("failed STATUS register test got: 0x%08X expected: "
		      "0x%08X\n", after, value);
		*data = 1;
		return 1;
	}
	/* restore previous status */
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_STATUS, before);

	/*
	 * Perform the remainder of the register test, looping through
	 * the test table until we either fail or reach the null entry.
	 */
	while (test->reg) {
		for (i = 0; i < test->array_len; i++) {
			switch (test->test_type) {
			case PATTERN_TEST:
				REG_PATTERN_TEST(test->reg + (i * 0x40),
						test->mask,
						test->write);
				break;
			case SET_READ_TEST:
				REG_SET_AND_CHECK(test->reg + (i * 0x40),
						test->mask,
						test->write);
				break;
			case WRITE_NO_TEST:
				writel(test->write,
				       (adapter->hw.hw_addr + test->reg)
				       + (i * 0x40));
				break;
			case TABLE32_TEST:
				REG_PATTERN_TEST(test->reg + (i * 4),
						test->mask,
						test->write);
				break;
			case TABLE64_TEST_LO:
				REG_PATTERN_TEST(test->reg + (i * 8),
						test->mask,
						test->write);
				break;
			case TABLE64_TEST_HI:
				REG_PATTERN_TEST((test->reg + 4) + (i * 8),
						test->mask,
						test->write);
				break;
			}
		}
		test++;
	}

	*data = 0;
	return 0;
}

static int ixgbe_eeprom_test(struct ixgbe_adapter *adapter, u64 *data)
{
	struct ixgbe_hw *hw = &adapter->hw;
	if (hw->eeprom.ops.validate_checksum(hw, NULL))
		*data = 1;
	else
		*data = 0;
	return *data;
}

static irqreturn_t ixgbe_test_intr(int irq, void *data)
{
	struct net_device *netdev = (struct net_device *) data;
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	adapter->test_icr |= IXGBE_READ_REG(&adapter->hw, IXGBE_EICR);

	return IRQ_HANDLED;
}

static int ixgbe_intr_test(struct ixgbe_adapter *adapter, u64 *data)
{
	struct net_device *netdev = adapter->netdev;
	u32 mask, i = 0, shared_int = true;
	u32 irq = adapter->pdev->irq;

	*data = 0;

	/* Hook up test interrupt handler just for this test */
	if (adapter->msix_entries) {
		/* NOTE: we don't test MSI-X interrupts here, yet */
		return 0;
	} else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
		shared_int = false;
		if (request_irq(irq, ixgbe_test_intr, 0, netdev->name,
				netdev)) {
			*data = 1;
			return -1;
		}
	} else if (!request_irq(irq, ixgbe_test_intr, IRQF_PROBE_SHARED,
	                        netdev->name, netdev)) {
		shared_int = false;
	} else if (request_irq(irq, ixgbe_test_intr, IRQF_SHARED,
	                       netdev->name, netdev)) {
		*data = 1;
		return -1;
	}
	e_info("testing %s interrupt\n", shared_int ?
		   "shared" : "unshared");

	/* Disable all the interrupts */
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFFFFFF);
	msleep(10);

	/* Test each interrupt */
	for (; i < 10; i++) {
		/* Interrupt to test */
		mask = 1 << i;

		if (!shared_int) {
			/*
			 * Disable the interrupts to be reported in
			 * the cause register and then force the same
			 * interrupt and see if one gets posted.  If
			 * an interrupt was posted to the bus, the
			 * test failed.
			 */
			adapter->test_icr = 0;
			IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC,
			                ~mask & 0x00007FFF);
			IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS,
			                ~mask & 0x00007FFF);
			msleep(10);

			if (adapter->test_icr & mask) {
				*data = 3;
				break;
			}
		}

		/*
		 * Enable the interrupt to be reported in the cause
		 * register and then force the same interrupt and see
		 * if one gets posted.  If an interrupt was not posted
		 * to the bus, the test failed.
		 */
		adapter->test_icr = 0;
		IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
		IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
		msleep(10);

		if (!(adapter->test_icr &mask)) {
			*data = 4;
			break;
		}

		if (!shared_int) {
			/*
			 * Disable the other interrupts to be reported in
			 * the cause register and then force the other
			 * interrupts and see if any get posted.  If
			 * an interrupt was posted to the bus, the
			 * test failed.
			 */
			adapter->test_icr = 0;
			IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC,
			                ~mask & 0x00007FFF);
			IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS,
			                ~mask & 0x00007FFF);
			msleep(10);

			if (adapter->test_icr) {
				*data = 5;
				break;
			}
		}
	}

	/* Disable all the interrupts */
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFFFFFF);
	msleep(10);

	/* Unhook test interrupt handler */
	free_irq(irq, netdev);

	return *data;
}

static void ixgbe_free_desc_rings(struct ixgbe_adapter *adapter)
{
	struct ixgbe_ring *tx_ring = &adapter->test_tx_ring;
	struct ixgbe_ring *rx_ring = &adapter->test_rx_ring;
	struct ixgbe_hw *hw = &adapter->hw;
	struct pci_dev *pdev = adapter->pdev;
	u32 reg_ctl;
	int i;

	/* shut down the DMA engines now so they can be reinitialized later */

	/* first Rx */
	reg_ctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
	reg_ctl &= ~IXGBE_RXCTRL_RXEN;
	IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_ctl);
	reg_ctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(0));
	reg_ctl &= ~IXGBE_RXDCTL_ENABLE;
	IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(0), reg_ctl);

	/* now Tx */
	reg_ctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(0));
	reg_ctl &= ~IXGBE_TXDCTL_ENABLE;
	IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(0), reg_ctl);
	if (hw->mac.type == ixgbe_mac_82599EB) {
		reg_ctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
		reg_ctl &= ~IXGBE_DMATXCTL_TE;
		IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, reg_ctl);
	}

	ixgbe_reset(adapter);

	if (tx_ring->desc && tx_ring->tx_buffer_info) {
		for (i = 0; i < tx_ring->count; i++) {
			struct ixgbe_tx_buffer *buf =
					&(tx_ring->tx_buffer_info[i]);
			if (buf->dma)
				dma_unmap_single(&pdev->dev, buf->dma,
						 buf->length, DMA_TO_DEVICE);
			if (buf->skb)
				dev_kfree_skb(buf->skb);
		}
	}

	if (rx_ring->desc && rx_ring->rx_buffer_info) {
		for (i = 0; i < rx_ring->count; i++) {
			struct ixgbe_rx_buffer *buf =
					&(rx_ring->rx_buffer_info[i]);
			if (buf->dma)
				dma_unmap_single(&pdev->dev, buf->dma,
						 IXGBE_RXBUFFER_2048,
						 DMA_FROM_DEVICE);
			if (buf->skb)
				dev_kfree_skb(buf->skb);
		}
	}

	if (tx_ring->desc) {
		dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
				  tx_ring->dma);
		tx_ring->desc = NULL;
	}
	if (rx_ring->desc) {
		dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
				  rx_ring->dma);
		rx_ring->desc = NULL;
	}

	kfree(tx_ring->tx_buffer_info);
	tx_ring->tx_buffer_info = NULL;
	kfree(rx_ring->rx_buffer_info);
	rx_ring->rx_buffer_info = NULL;
}

static int ixgbe_setup_desc_rings(struct ixgbe_adapter *adapter)
{
	struct ixgbe_ring *tx_ring = &adapter->test_tx_ring;
	struct ixgbe_ring *rx_ring = &adapter->test_rx_ring;
	struct pci_dev *pdev = adapter->pdev;
	u32 rctl, reg_data;
	int i, ret_val;

	/* Setup Tx descriptor ring and Tx buffers */

	if (!tx_ring->count)
		tx_ring->count = IXGBE_DEFAULT_TXD;

	tx_ring->tx_buffer_info = kcalloc(tx_ring->count,
	                                  sizeof(struct ixgbe_tx_buffer),
	                                  GFP_KERNEL);
	if (!(tx_ring->tx_buffer_info)) {
		ret_val = 1;
		goto err_nomem;
	}

	tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
	tx_ring->size = ALIGN(tx_ring->size, 4096);
	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
					   &tx_ring->dma, GFP_KERNEL);
	if (!(tx_ring->desc)) {
		ret_val = 2;
		goto err_nomem;
	}
	tx_ring->next_to_use = tx_ring->next_to_clean = 0;

	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDBAL(0),
			((u64) tx_ring->dma & 0x00000000FFFFFFFF));
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDBAH(0),
			((u64) tx_ring->dma >> 32));
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDLEN(0),
			tx_ring->count * sizeof(union ixgbe_adv_tx_desc));
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDH(0), 0);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDT(0), 0);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_HLREG0);
	reg_data |= IXGBE_HLREG0_TXPADEN;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_HLREG0, reg_data);

	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
		reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_DMATXCTL);
		reg_data |= IXGBE_DMATXCTL_TE;
		IXGBE_WRITE_REG(&adapter->hw, IXGBE_DMATXCTL, reg_data);
	}
	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_TXDCTL(0));
	reg_data |= IXGBE_TXDCTL_ENABLE;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_TXDCTL(0), reg_data);

	for (i = 0; i < tx_ring->count; i++) {
		union ixgbe_adv_tx_desc *desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
		struct sk_buff *skb;
		unsigned int size = 1024;

		skb = alloc_skb(size, GFP_KERNEL);
		if (!skb) {
			ret_val = 3;
			goto err_nomem;
		}
		skb_put(skb, size);
		tx_ring->tx_buffer_info[i].skb = skb;
		tx_ring->tx_buffer_info[i].length = skb->len;
		tx_ring->tx_buffer_info[i].dma =
			dma_map_single(&pdev->dev, skb->data, skb->len,
				       DMA_TO_DEVICE);
		desc->read.buffer_addr =
		                    cpu_to_le64(tx_ring->tx_buffer_info[i].dma);
		desc->read.cmd_type_len = cpu_to_le32(skb->len);
		desc->read.cmd_type_len |= cpu_to_le32(IXGBE_TXD_CMD_EOP |
		                                       IXGBE_TXD_CMD_IFCS |
		                                       IXGBE_TXD_CMD_RS);
		desc->read.olinfo_status = 0;
		if (adapter->hw.mac.type == ixgbe_mac_82599EB)
			desc->read.olinfo_status |=
			                (skb->len << IXGBE_ADVTXD_PAYLEN_SHIFT);

	}

	/* Setup Rx Descriptor ring and Rx buffers */

	if (!rx_ring->count)
		rx_ring->count = IXGBE_DEFAULT_RXD;

	rx_ring->rx_buffer_info = kcalloc(rx_ring->count,
	                                  sizeof(struct ixgbe_rx_buffer),
	                                  GFP_KERNEL);
	if (!(rx_ring->rx_buffer_info)) {
		ret_val = 4;
		goto err_nomem;
	}

	rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
	rx_ring->size = ALIGN(rx_ring->size, 4096);
	rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
					   &rx_ring->dma, GFP_KERNEL);
	if (!(rx_ring->desc)) {
		ret_val = 5;
		goto err_nomem;
	}
	rx_ring->next_to_use = rx_ring->next_to_clean = 0;

	rctl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXCTRL);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXCTRL, rctl & ~IXGBE_RXCTRL_RXEN);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDBAL(0),
			((u64)rx_ring->dma & 0xFFFFFFFF));
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDBAH(0),
			((u64) rx_ring->dma >> 32));
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDLEN(0), rx_ring->size);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDH(0), 0);
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDT(0), 0);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL);
	reg_data |= IXGBE_FCTRL_BAM | IXGBE_FCTRL_SBP | IXGBE_FCTRL_MPE;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, reg_data);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_HLREG0);
	reg_data &= ~IXGBE_HLREG0_LPBK;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_HLREG0, reg_data);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_RDRXCTL);
#define IXGBE_RDRXCTL_RDMTS_MASK    0x00000003 /* Receive Descriptor Minimum
                                                  Threshold Size mask */
	reg_data &= ~IXGBE_RDRXCTL_RDMTS_MASK;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDRXCTL, reg_data);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_MCSTCTRL);
#define IXGBE_MCSTCTRL_MO_MASK      0x00000003 /* Multicast Offset mask */
	reg_data &= ~IXGBE_MCSTCTRL_MO_MASK;
	reg_data |= adapter->hw.mac.mc_filter_type;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_MCSTCTRL, reg_data);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(0));
	reg_data |= IXGBE_RXDCTL_ENABLE;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(0), reg_data);
	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
		int j = adapter->rx_ring[0]->reg_idx;
		u32 k;
		for (k = 0; k < 10; k++) {
			if (IXGBE_READ_REG(&adapter->hw,
			                   IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
				break;
			else
				msleep(1);
		}
	}

	rctl |= IXGBE_RXCTRL_RXEN | IXGBE_RXCTRL_DMBYPS;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXCTRL, rctl);

	for (i = 0; i < rx_ring->count; i++) {
		union ixgbe_adv_rx_desc *rx_desc =
		                                 IXGBE_RX_DESC_ADV(*rx_ring, i);
		struct sk_buff *skb;

		skb = alloc_skb(IXGBE_RXBUFFER_2048 + NET_IP_ALIGN, GFP_KERNEL);
		if (!skb) {
			ret_val = 6;
			goto err_nomem;
		}
		skb_reserve(skb, NET_IP_ALIGN);
		rx_ring->rx_buffer_info[i].skb = skb;
		rx_ring->rx_buffer_info[i].dma =
			dma_map_single(&pdev->dev, skb->data,
				       IXGBE_RXBUFFER_2048, DMA_FROM_DEVICE);
		rx_desc->read.pkt_addr =
				cpu_to_le64(rx_ring->rx_buffer_info[i].dma);
		memset(skb->data, 0x00, skb->len);
	}

	return 0;

err_nomem:
	ixgbe_free_desc_rings(adapter);
	return ret_val;
}

static int ixgbe_setup_loopback_test(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	u32 reg_data;

	/* right now we only support MAC loopback in the driver */

	/* Setup MAC loopback */
	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_HLREG0);
	reg_data |= IXGBE_HLREG0_LPBK;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_HLREG0, reg_data);

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_AUTOC);
	reg_data &= ~IXGBE_AUTOC_LMS_MASK;
	reg_data |= IXGBE_AUTOC_LMS_10G_LINK_NO_AN | IXGBE_AUTOC_FLU;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_AUTOC, reg_data);

	/* Disable Atlas Tx lanes; re-enabled in reset path */
	if (hw->mac.type == ixgbe_mac_82598EB) {
		u8 atlas;

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &atlas);
		atlas |= IXGBE_ATLAS_PDN_TX_REG_EN;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, atlas);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, &atlas);
		atlas |= IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, atlas);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, &atlas);
		atlas |= IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, atlas);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, &atlas);
		atlas |= IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, atlas);
	}

	return 0;
}

static void ixgbe_loopback_cleanup(struct ixgbe_adapter *adapter)
{
	u32 reg_data;

	reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_HLREG0);
	reg_data &= ~IXGBE_HLREG0_LPBK;
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_HLREG0, reg_data);
}

static void ixgbe_create_lbtest_frame(struct sk_buff *skb,
                                      unsigned int frame_size)
{
	memset(skb->data, 0xFF, frame_size);
	frame_size &= ~1;
	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
	memset(&skb->data[frame_size / 2 + 10], 0xBE, 1);
	memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);
}

static int ixgbe_check_lbtest_frame(struct sk_buff *skb,
                                    unsigned int frame_size)
{
	frame_size &= ~1;
	if (*(skb->data + 3) == 0xFF) {
		if ((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
		    (*(skb->data + frame_size / 2 + 12) == 0xAF)) {
			return 0;
		}
	}
	return 13;
}

static int ixgbe_run_loopback_test(struct ixgbe_adapter *adapter)
{
	struct ixgbe_ring *tx_ring = &adapter->test_tx_ring;
	struct ixgbe_ring *rx_ring = &adapter->test_rx_ring;
	struct pci_dev *pdev = adapter->pdev;
	int i, j, k, l, lc, good_cnt, ret_val = 0;
	unsigned long time;

	IXGBE_WRITE_REG(&adapter->hw, IXGBE_RDT(0), rx_ring->count - 1);

	/*
	 * Calculate the loop count based on the largest descriptor ring
	 * The idea is to wrap the largest ring a number of times using 64
	 * send/receive pairs during each loop
	 */

	if (rx_ring->count <= tx_ring->count)
		lc = ((tx_ring->count / 64) * 2) + 1;
	else
		lc = ((rx_ring->count / 64) * 2) + 1;

	k = l = 0;
	for (j = 0; j <= lc; j++) {
		for (i = 0; i < 64; i++) {
			ixgbe_create_lbtest_frame(
					tx_ring->tx_buffer_info[k].skb,
					1024);
			dma_sync_single_for_device(&pdev->dev,
				tx_ring->tx_buffer_info[k].dma,
				tx_ring->tx_buffer_info[k].length,
				DMA_TO_DEVICE);
			if (unlikely(++k == tx_ring->count))
				k = 0;
		}
		IXGBE_WRITE_REG(&adapter->hw, IXGBE_TDT(0), k);
		msleep(200);
		/* set the start time for the receive */
		time = jiffies;
		good_cnt = 0;
		do {
			/* receive the sent packets */
			dma_sync_single_for_cpu(&pdev->dev,
					rx_ring->rx_buffer_info[l].dma,
					IXGBE_RXBUFFER_2048,
					DMA_FROM_DEVICE);
			ret_val = ixgbe_check_lbtest_frame(
					rx_ring->rx_buffer_info[l].skb, 1024);
			if (!ret_val)
				good_cnt++;
			if (++l == rx_ring->count)
				l = 0;
			/*
			 * time + 20 msecs (200 msecs on 2.4) is more than
			 * enough time to complete the receives, if it's
			 * exceeded, break and error off
			 */
		} while (good_cnt < 64 && jiffies < (time + 20));
		if (good_cnt != 64) {
			/* ret_val is the same as mis-compare */
			ret_val = 13;
			break;
		}
		if (jiffies >= (time + 20)) {
			/* Error code for time out error */
			ret_val = 14;
			break;
		}
	}

	return ret_val;
}

static int ixgbe_loopback_test(struct ixgbe_adapter *adapter, u64 *data)
{
	*data = ixgbe_setup_desc_rings(adapter);
	if (*data)
		goto out;
	*data = ixgbe_setup_loopback_test(adapter);
	if (*data)
		goto err_loopback;
	*data = ixgbe_run_loopback_test(adapter);
	ixgbe_loopback_cleanup(adapter);

err_loopback:
	ixgbe_free_desc_rings(adapter);
out:
	return *data;
}

static void ixgbe_diag_test(struct net_device *netdev,
                            struct ethtool_test *eth_test, u64 *data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	bool if_running = netif_running(netdev);

	set_bit(__IXGBE_TESTING, &adapter->state);
	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
		/* Offline tests */

		e_info("offline testing starting\n");

		/* Link test performed before hardware reset so autoneg doesn't
		 * interfere with test result */
		if (ixgbe_link_test(adapter, &data[4]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
			int i;
			for (i = 0; i < adapter->num_vfs; i++) {
				if (adapter->vfinfo[i].clear_to_send) {
					netdev_warn(netdev, "%s",
						    "offline diagnostic is not "
						    "supported when VFs are "
						    "present\n");
					data[0] = 1;
					data[1] = 1;
					data[2] = 1;
					data[3] = 1;
					eth_test->flags |= ETH_TEST_FL_FAILED;
					clear_bit(__IXGBE_TESTING,
						  &adapter->state);
					goto skip_ol_tests;
				}
			}
		}

		if (if_running)
			/* indicate we're in test mode */
			dev_close(netdev);
		else
			ixgbe_reset(adapter);

		e_info("register testing starting\n");
		if (ixgbe_reg_test(adapter, &data[0]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		ixgbe_reset(adapter);
		e_info("eeprom testing starting\n");
		if (ixgbe_eeprom_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		ixgbe_reset(adapter);
		e_info("interrupt testing starting\n");
		if (ixgbe_intr_test(adapter, &data[2]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		/* If SRIOV or VMDq is enabled then skip MAC
		 * loopback diagnostic. */
		if (adapter->flags & (IXGBE_FLAG_SRIOV_ENABLED |
				      IXGBE_FLAG_VMDQ_ENABLED)) {
			e_info("Skip MAC loopback diagnostic in VT mode\n");
			data[3] = 0;
			goto skip_loopback;
		}

		ixgbe_reset(adapter);
		e_info("loopback testing starting\n");
		if (ixgbe_loopback_test(adapter, &data[3]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

skip_loopback:
		ixgbe_reset(adapter);

		clear_bit(__IXGBE_TESTING, &adapter->state);
		if (if_running)
			dev_open(netdev);
	} else {
		e_info("online testing starting\n");
		/* Online tests */
		if (ixgbe_link_test(adapter, &data[4]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		/* Online tests aren't run; pass by default */
		data[0] = 0;
		data[1] = 0;
		data[2] = 0;
		data[3] = 0;

		clear_bit(__IXGBE_TESTING, &adapter->state);
	}
skip_ol_tests:
	msleep_interruptible(4 * 1000);
}

static int ixgbe_wol_exclusion(struct ixgbe_adapter *adapter,
                               struct ethtool_wolinfo *wol)
{
	struct ixgbe_hw *hw = &adapter->hw;
	int retval = 1;

	switch(hw->device_id) {
	case IXGBE_DEV_ID_82599_KX4:
		retval = 0;
		break;
	default:
		wol->supported = 0;
	}

	return retval;
}

static void ixgbe_get_wol(struct net_device *netdev,
                          struct ethtool_wolinfo *wol)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	wol->supported = WAKE_UCAST | WAKE_MCAST |
	                 WAKE_BCAST | WAKE_MAGIC;
	wol->wolopts = 0;

	if (ixgbe_wol_exclusion(adapter, wol) ||
	    !device_can_wakeup(&adapter->pdev->dev))
		return;

	if (adapter->wol & IXGBE_WUFC_EX)
		wol->wolopts |= WAKE_UCAST;
	if (adapter->wol & IXGBE_WUFC_MC)
		wol->wolopts |= WAKE_MCAST;
	if (adapter->wol & IXGBE_WUFC_BC)
		wol->wolopts |= WAKE_BCAST;
	if (adapter->wol & IXGBE_WUFC_MAG)
		wol->wolopts |= WAKE_MAGIC;
}

static int ixgbe_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
		return -EOPNOTSUPP;

	if (ixgbe_wol_exclusion(adapter, wol))
		return wol->wolopts ? -EOPNOTSUPP : 0;

	adapter->wol = 0;

	if (wol->wolopts & WAKE_UCAST)
		adapter->wol |= IXGBE_WUFC_EX;
	if (wol->wolopts & WAKE_MCAST)
		adapter->wol |= IXGBE_WUFC_MC;
	if (wol->wolopts & WAKE_BCAST)
		adapter->wol |= IXGBE_WUFC_BC;
	if (wol->wolopts & WAKE_MAGIC)
		adapter->wol |= IXGBE_WUFC_MAG;

	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);

	return 0;
}

static int ixgbe_nway_reset(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (netif_running(netdev))
		ixgbe_reinit_locked(adapter);

	return 0;
}

static int ixgbe_phys_id(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
	u32 i;

	if (!data || data > 300)
		data = 300;

	for (i = 0; i < (data * 1000); i += 400) {
		hw->mac.ops.led_on(hw, IXGBE_LED_ON);
		msleep_interruptible(200);
		hw->mac.ops.led_off(hw, IXGBE_LED_ON);
		msleep_interruptible(200);
	}

	/* Restore LED settings */
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_LEDCTL, led_reg);

	return 0;
}

static int ixgbe_get_coalesce(struct net_device *netdev,
                              struct ethtool_coalesce *ec)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	ec->tx_max_coalesced_frames_irq = adapter->tx_ring[0]->work_limit;

	/* only valid if in constant ITR mode */
	switch (adapter->rx_itr_setting) {
	case 0:
		/* throttling disabled */
		ec->rx_coalesce_usecs = 0;
		break;
	case 1:
		/* dynamic ITR mode */
		ec->rx_coalesce_usecs = 1;
		break;
	default:
		/* fixed interrupt rate mode */
		ec->rx_coalesce_usecs = 1000000/adapter->rx_eitr_param;
		break;
	}

	/* if in mixed tx/rx queues per vector mode, report only rx settings */
	if (adapter->q_vector[0]->txr_count && adapter->q_vector[0]->rxr_count)
		return 0;

	/* only valid if in constant ITR mode */
	switch (adapter->tx_itr_setting) {
	case 0:
		/* throttling disabled */
		ec->tx_coalesce_usecs = 0;
		break;
	case 1:
		/* dynamic ITR mode */
		ec->tx_coalesce_usecs = 1;
		break;
	default:
		ec->tx_coalesce_usecs = 1000000/adapter->tx_eitr_param;
		break;
	}

	return 0;
}

static int ixgbe_set_coalesce(struct net_device *netdev,
                              struct ethtool_coalesce *ec)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_q_vector *q_vector;
	int i;
	bool need_reset = false;

	/* don't accept tx specific changes if we've got mixed RxTx vectors */
	if (adapter->q_vector[0]->txr_count && adapter->q_vector[0]->rxr_count
	   && ec->tx_coalesce_usecs)
		return -EINVAL;

	if (ec->tx_max_coalesced_frames_irq)
		adapter->tx_ring[0]->work_limit = ec->tx_max_coalesced_frames_irq;

	if (ec->rx_coalesce_usecs > 1) {
		u32 max_int;
		if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
			max_int = IXGBE_MAX_RSC_INT_RATE;
		else
			max_int = IXGBE_MAX_INT_RATE;

		/* check the limits */
		if ((1000000/ec->rx_coalesce_usecs > max_int) ||
		    (1000000/ec->rx_coalesce_usecs < IXGBE_MIN_INT_RATE))
			return -EINVAL;

		/* store the value in ints/second */
		adapter->rx_eitr_param = 1000000/ec->rx_coalesce_usecs;

		/* static value of interrupt rate */
		adapter->rx_itr_setting = adapter->rx_eitr_param;
		/* clear the lower bit as its used for dynamic state */
		adapter->rx_itr_setting &= ~1;
	} else if (ec->rx_coalesce_usecs == 1) {
		/* 1 means dynamic mode */
		adapter->rx_eitr_param = 20000;
		adapter->rx_itr_setting = 1;
	} else {
		/*
		 * any other value means disable eitr, which is best
		 * served by setting the interrupt rate very high
		 */
		adapter->rx_eitr_param = IXGBE_MAX_INT_RATE;
		adapter->rx_itr_setting = 0;

		/*
		 * if hardware RSC is enabled, disable it when
		 * setting low latency mode, to avoid errata, assuming
		 * that when the user set low latency mode they want
		 * it at the cost of anything else
		 */
		if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
			adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
			if (netdev->features & NETIF_F_LRO) {
				netdev->features &= ~NETIF_F_LRO;
				e_info("rx-usecs set to 0, disabling RSC\n");
			}
			need_reset = true;
		}
	}

	if (ec->tx_coalesce_usecs > 1) {
		/*
		 * don't have to worry about max_int as above because
		 * tx vectors don't do hardware RSC (an rx function)
		 */
		/* check the limits */
		if ((1000000/ec->tx_coalesce_usecs > IXGBE_MAX_INT_RATE) ||
		    (1000000/ec->tx_coalesce_usecs < IXGBE_MIN_INT_RATE))
			return -EINVAL;

		/* store the value in ints/second */
		adapter->tx_eitr_param = 1000000/ec->tx_coalesce_usecs;

		/* static value of interrupt rate */
		adapter->tx_itr_setting = adapter->tx_eitr_param;

		/* clear the lower bit as its used for dynamic state */
		adapter->tx_itr_setting &= ~1;
	} else if (ec->tx_coalesce_usecs == 1) {
		/* 1 means dynamic mode */
		adapter->tx_eitr_param = 10000;
		adapter->tx_itr_setting = 1;
	} else {
		adapter->tx_eitr_param = IXGBE_MAX_INT_RATE;
		adapter->tx_itr_setting = 0;
	}

	/* MSI/MSIx Interrupt Mode */
	if (adapter->flags &
	    (IXGBE_FLAG_MSIX_ENABLED | IXGBE_FLAG_MSI_ENABLED)) {
		int num_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
		for (i = 0; i < num_vectors; i++) {
			q_vector = adapter->q_vector[i];
			if (q_vector->txr_count && !q_vector->rxr_count)
				/* tx only */
				q_vector->eitr = adapter->tx_eitr_param;
			else
				/* rx only or mixed */
				q_vector->eitr = adapter->rx_eitr_param;
			ixgbe_write_eitr(q_vector);
		}
	/* Legacy Interrupt Mode */
	} else {
		q_vector = adapter->q_vector[0];
		q_vector->eitr = adapter->rx_eitr_param;
		ixgbe_write_eitr(q_vector);
	}

	/*
	 * do reset here at the end to make sure EITR==0 case is handled
	 * correctly w.r.t stopping tx, and changing TXDCTL.WTHRESH settings
	 * also locks in RSC enable/disable which requires reset
	 */
	if (need_reset) {
		if (netif_running(netdev))
			ixgbe_reinit_locked(adapter);
		else
			ixgbe_reset(adapter);
	}

	return 0;
}

static int ixgbe_set_flags(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	bool need_reset = false;
	int rc;

	rc = ethtool_op_set_flags(netdev, data, ETH_FLAG_LRO | ETH_FLAG_NTUPLE);
	if (rc)
		return rc;

	/* if state changes we need to update adapter->flags and reset */
	if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) {
		/*
		 * cast both to bool and verify if they are set the same
		 * but only enable RSC if itr is non-zero, as
		 * itr=0 and RSC are mutually exclusive
		 */
		if (((!!(data & ETH_FLAG_LRO)) !=
		     (!!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))) &&
		    adapter->rx_itr_setting) {
			adapter->flags2 ^= IXGBE_FLAG2_RSC_ENABLED;
			switch (adapter->hw.mac.type) {
			case ixgbe_mac_82599EB:
				need_reset = true;
				break;
			default:
				break;
			}
		} else if (!adapter->rx_itr_setting) {
			netdev->features &= ~ETH_FLAG_LRO;
			if (data & ETH_FLAG_LRO)
				e_info("rx-usecs set to 0, "
					"LRO/RSC cannot be enabled.\n");
		}
	}

	/*
	 * Check if Flow Director n-tuple support was enabled or disabled.  If
	 * the state changed, we need to reset.
	 */
	if ((adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) &&
	    (!(data & ETH_FLAG_NTUPLE))) {
		/* turn off Flow Director perfect, set hash and reset */
		adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
		adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
		need_reset = true;
	} else if ((!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) &&
	           (data & ETH_FLAG_NTUPLE)) {
		/* turn off Flow Director hash, enable perfect and reset */
		adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
		adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
		need_reset = true;
	} else {
		/* no state change */
	}

	if (need_reset) {
		if (netif_running(netdev))
			ixgbe_reinit_locked(adapter);
		else
			ixgbe_reset(adapter);
	}

	return 0;
}

static int ixgbe_set_rx_ntuple(struct net_device *dev,
                               struct ethtool_rx_ntuple *cmd)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	struct ethtool_rx_ntuple_flow_spec fs = cmd->fs;
	struct ixgbe_atr_input input_struct;
	struct ixgbe_atr_input_masks input_masks;
	int target_queue;

	if (adapter->hw.mac.type == ixgbe_mac_82598EB)
		return -EOPNOTSUPP;

	/*
	 * Don't allow programming if the action is a queue greater than
	 * the number of online Tx queues.
	 */
	if ((fs.action >= adapter->num_tx_queues) ||
	    (fs.action < ETHTOOL_RXNTUPLE_ACTION_DROP))
		return -EINVAL;

	memset(&input_struct, 0, sizeof(struct ixgbe_atr_input));
	memset(&input_masks, 0, sizeof(struct ixgbe_atr_input_masks));

	input_masks.src_ip_mask = fs.m_u.tcp_ip4_spec.ip4src;
	input_masks.dst_ip_mask = fs.m_u.tcp_ip4_spec.ip4dst;
	input_masks.src_port_mask = fs.m_u.tcp_ip4_spec.psrc;
	input_masks.dst_port_mask = fs.m_u.tcp_ip4_spec.pdst;
	input_masks.vlan_id_mask = fs.vlan_tag_mask;
	/* only use the lowest 2 bytes for flex bytes */
	input_masks.data_mask = (fs.data_mask & 0xffff);

	switch (fs.flow_type) {
	case TCP_V4_FLOW:
		ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_TCP);
		break;
	case UDP_V4_FLOW:
		ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_UDP);
		break;
	case SCTP_V4_FLOW:
		ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_SCTP);
		break;
	default:
		return -1;
	}

	/* Mask bits from the inputs based on user-supplied mask */
	ixgbe_atr_set_src_ipv4_82599(&input_struct,
	            (fs.h_u.tcp_ip4_spec.ip4src & ~fs.m_u.tcp_ip4_spec.ip4src));
	ixgbe_atr_set_dst_ipv4_82599(&input_struct,
	            (fs.h_u.tcp_ip4_spec.ip4dst & ~fs.m_u.tcp_ip4_spec.ip4dst));
	/* 82599 expects these to be byte-swapped for perfect filtering */
	ixgbe_atr_set_src_port_82599(&input_struct,
	       ((ntohs(fs.h_u.tcp_ip4_spec.psrc)) & ~fs.m_u.tcp_ip4_spec.psrc));
	ixgbe_atr_set_dst_port_82599(&input_struct,
	       ((ntohs(fs.h_u.tcp_ip4_spec.pdst)) & ~fs.m_u.tcp_ip4_spec.pdst));

	/* VLAN and Flex bytes are either completely masked or not */
	if (!fs.vlan_tag_mask)
		ixgbe_atr_set_vlan_id_82599(&input_struct, fs.vlan_tag);

	if (!input_masks.data_mask)
		/* make sure we only use the first 2 bytes of user data */
		ixgbe_atr_set_flex_byte_82599(&input_struct,
		                              (fs.data & 0xffff));

	/* determine if we need to drop or route the packet */
	if (fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
		target_queue = MAX_RX_QUEUES - 1;
	else
		target_queue = fs.action;

	spin_lock(&adapter->fdir_perfect_lock);
	ixgbe_fdir_add_perfect_filter_82599(&adapter->hw, &input_struct,
	                                    &input_masks, 0, target_queue);
	spin_unlock(&adapter->fdir_perfect_lock);

	return 0;
}

static const struct ethtool_ops ixgbe_ethtool_ops = {
	.get_settings           = ixgbe_get_settings,
	.set_settings           = ixgbe_set_settings,
	.get_drvinfo            = ixgbe_get_drvinfo,
	.get_regs_len           = ixgbe_get_regs_len,
	.get_regs               = ixgbe_get_regs,
	.get_wol                = ixgbe_get_wol,
	.set_wol                = ixgbe_set_wol,
	.nway_reset             = ixgbe_nway_reset,
	.get_link               = ethtool_op_get_link,
	.get_eeprom_len         = ixgbe_get_eeprom_len,
	.get_eeprom             = ixgbe_get_eeprom,
	.get_ringparam          = ixgbe_get_ringparam,
	.set_ringparam          = ixgbe_set_ringparam,
	.get_pauseparam         = ixgbe_get_pauseparam,
	.set_pauseparam         = ixgbe_set_pauseparam,
	.get_rx_csum            = ixgbe_get_rx_csum,
	.set_rx_csum            = ixgbe_set_rx_csum,
	.get_tx_csum            = ixgbe_get_tx_csum,
	.set_tx_csum            = ixgbe_set_tx_csum,
	.get_sg                 = ethtool_op_get_sg,
	.set_sg                 = ethtool_op_set_sg,
	.get_msglevel           = ixgbe_get_msglevel,
	.set_msglevel           = ixgbe_set_msglevel,
	.get_tso                = ethtool_op_get_tso,
	.set_tso                = ixgbe_set_tso,
	.self_test              = ixgbe_diag_test,
	.get_strings            = ixgbe_get_strings,
	.phys_id                = ixgbe_phys_id,
	.get_sset_count         = ixgbe_get_sset_count,
	.get_ethtool_stats      = ixgbe_get_ethtool_stats,
	.get_coalesce           = ixgbe_get_coalesce,
	.set_coalesce           = ixgbe_set_coalesce,
	.get_flags              = ethtool_op_get_flags,
	.set_flags              = ixgbe_set_flags,
	.set_rx_ntuple          = ixgbe_set_rx_ntuple,
};

void ixgbe_set_ethtool_ops(struct net_device *netdev)
{
	SET_ETHTOOL_OPS(netdev, &ixgbe_ethtool_ops);
}