drivers/net/ethernet/intel/ixgbevf/ethtool.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 1999 - 2018 Intel Corporation. */

/* ethtool support for ixgbevf */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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/if_vlan.h>
#include <linux/uaccess.h>

#include "ixgbevf.h"

#define IXGBE_ALL_RAR_ENTRIES 16

enum {NETDEV_STATS, IXGBEVF_STATS};

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

#define IXGBEVF_STAT(_name, _stat) { \
	.stat_string = _name, \
	.type = IXGBEVF_STATS, \
	.sizeof_stat = FIELD_SIZEOF(struct ixgbevf_adapter, _stat), \
	.stat_offset = offsetof(struct ixgbevf_adapter, _stat) \
}

#define IXGBEVF_NETDEV_STAT(_net_stat) { \
	.stat_string = #_net_stat, \
	.type = NETDEV_STATS, \
	.sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \
	.stat_offset = offsetof(struct net_device_stats, _net_stat) \
}

static struct ixgbe_stats ixgbevf_gstrings_stats[] = {
	IXGBEVF_NETDEV_STAT(rx_packets),
	IXGBEVF_NETDEV_STAT(tx_packets),
	IXGBEVF_NETDEV_STAT(rx_bytes),
	IXGBEVF_NETDEV_STAT(tx_bytes),
	IXGBEVF_STAT("tx_busy", tx_busy),
	IXGBEVF_STAT("tx_restart_queue", restart_queue),
	IXGBEVF_STAT("tx_timeout_count", tx_timeout_count),
	IXGBEVF_NETDEV_STAT(multicast),
	IXGBEVF_STAT("rx_csum_offload_errors", hw_csum_rx_error),
	IXGBEVF_STAT("alloc_rx_page", alloc_rx_page),
	IXGBEVF_STAT("alloc_rx_page_failed", alloc_rx_page_failed),
	IXGBEVF_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
	IXGBEVF_STAT("tx_ipsec", tx_ipsec),
	IXGBEVF_STAT("rx_ipsec", rx_ipsec),
};

#define IXGBEVF_QUEUE_STATS_LEN ( \
	(((struct ixgbevf_adapter *)netdev_priv(netdev))->num_tx_queues + \
	 ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_xdp_queues + \
	 ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_rx_queues) * \
	 (sizeof(struct ixgbevf_stats) / sizeof(u64)))
#define IXGBEVF_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbevf_gstrings_stats)

#define IXGBEVF_STATS_LEN (IXGBEVF_GLOBAL_STATS_LEN + IXGBEVF_QUEUE_STATS_LEN)
static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register test  (offline)",
	"Link test   (on/offline)"
};

#define IXGBEVF_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)

static const char ixgbevf_priv_flags_strings[][ETH_GSTRING_LEN] = {
#define IXGBEVF_PRIV_FLAGS_LEGACY_RX	BIT(0)
	"legacy-rx",
};

#define IXGBEVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(ixgbevf_priv_flags_strings)

static int ixgbevf_get_link_ksettings(struct net_device *netdev,
				      struct ethtool_link_ksettings *cmd)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 link_speed = 0;
	bool link_up;

	ethtool_link_ksettings_zero_link_mode(cmd, supported);
	ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
	cmd->base.autoneg = AUTONEG_DISABLE;
	cmd->base.port = -1;

	hw->mac.get_link_status = 1;
	hw->mac.ops.check_link(hw, &link_speed, &link_up, false);

	if (link_up) {
		__u32 speed = SPEED_10000;

		switch (link_speed) {
		case IXGBE_LINK_SPEED_10GB_FULL:
			speed = SPEED_10000;
			break;
		case IXGBE_LINK_SPEED_1GB_FULL:
			speed = SPEED_1000;
			break;
		case IXGBE_LINK_SPEED_100_FULL:
			speed = SPEED_100;
			break;
		}

		cmd->base.speed = speed;
		cmd->base.duplex = DUPLEX_FULL;
	} else {
		cmd->base.speed = SPEED_UNKNOWN;
		cmd->base.duplex = DUPLEX_UNKNOWN;
	}

	return 0;
}

static u32 ixgbevf_get_msglevel(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	return adapter->msg_enable;
}

static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	adapter->msg_enable = data;
}

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

static int ixgbevf_get_regs_len(struct net_device *netdev)
{
#define IXGBE_REGS_LEN 45
	return IXGBE_REGS_LEN * sizeof(u32);
}

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

	memset(p, 0, regs_len);

	/* generate a number suitable for ethtool's register version */
	regs->version = (1u << 24) | (hw->revision_id << 16) | hw->device_id;

	/* General Registers */
	regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
	regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
	regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
	regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
	regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFFRTIMER);

	/* 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[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
	regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
	regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
	regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
	regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
	regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
	regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
	regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
	regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);

	/* Receive DMA */
	for (i = 0; i < 2; i++)
		regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
	for (i = 0; i < 2; i++)
		regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
	for (i = 0; i < 2; i++)
		regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
	for (i = 0; i < 2; i++)
		regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
	for (i = 0; i < 2; i++)
		regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
	for (i = 0; i < 2; i++)
		regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));

	/* Receive */
	regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);

	/* Transmit */
	for (i = 0; i < 2; i++)
		regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
	for (i = 0; i < 2; i++)
		regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
	for (i = 0; i < 2; i++)
		regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
	for (i = 0; i < 2; i++)
		regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
	for (i = 0; i < 2; i++)
		regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
	for (i = 0; i < 2; i++)
		regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));
}

static void ixgbevf_get_drvinfo(struct net_device *netdev,
				struct ethtool_drvinfo *drvinfo)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	strlcpy(drvinfo->driver, ixgbevf_driver_name, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, ixgbevf_driver_version,
		sizeof(drvinfo->version));
	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
		sizeof(drvinfo->bus_info));

	drvinfo->n_priv_flags = IXGBEVF_PRIV_FLAGS_STR_LEN;
}

static void ixgbevf_get_ringparam(struct net_device *netdev,
				  struct ethtool_ringparam *ring)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	ring->rx_max_pending = IXGBEVF_MAX_RXD;
	ring->tx_max_pending = IXGBEVF_MAX_TXD;
	ring->rx_pending = adapter->rx_ring_count;
	ring->tx_pending = adapter->tx_ring_count;
}

static int ixgbevf_set_ringparam(struct net_device *netdev,
				 struct ethtool_ringparam *ring)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
	u32 new_rx_count, new_tx_count;
	int i, j, err = 0;

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

	new_tx_count = max_t(u32, ring->tx_pending, IXGBEVF_MIN_TXD);
	new_tx_count = min_t(u32, new_tx_count, IXGBEVF_MAX_TXD);
	new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);

	new_rx_count = max_t(u32, ring->rx_pending, IXGBEVF_MIN_RXD);
	new_rx_count = min_t(u32, new_rx_count, IXGBEVF_MAX_RXD);
	new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);

	/* if nothing to do return success */
	if ((new_tx_count == adapter->tx_ring_count) &&
	    (new_rx_count == adapter->rx_ring_count))
		return 0;

	while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
		usleep_range(1000, 2000);

	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_xdp_queues; i++)
			adapter->xdp_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->xdp_ring_count = new_tx_count;
		adapter->rx_ring_count = new_rx_count;
		goto clear_reset;
	}

	if (new_tx_count != adapter->tx_ring_count) {
		tx_ring = vmalloc(array_size(sizeof(*tx_ring),
					     adapter->num_tx_queues +
						adapter->num_xdp_queues));
		if (!tx_ring) {
			err = -ENOMEM;
			goto clear_reset;
		}

		for (i = 0; i < adapter->num_tx_queues; i++) {
			/* clone ring and setup updated count */
			tx_ring[i] = *adapter->tx_ring[i];
			tx_ring[i].count = new_tx_count;
			err = ixgbevf_setup_tx_resources(&tx_ring[i]);
			if (err) {
				while (i) {
					i--;
					ixgbevf_free_tx_resources(&tx_ring[i]);
				}

				vfree(tx_ring);
				tx_ring = NULL;

				goto clear_reset;
			}
		}

		for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
			/* clone ring and setup updated count */
			tx_ring[i] = *adapter->xdp_ring[j];
			tx_ring[i].count = new_tx_count;
			err = ixgbevf_setup_tx_resources(&tx_ring[i]);
			if (err) {
				while (i) {
					i--;
					ixgbevf_free_tx_resources(&tx_ring[i]);
				}

				vfree(tx_ring);
				tx_ring = NULL;

				goto clear_reset;
			}
		}
	}

	if (new_rx_count != adapter->rx_ring_count) {
		rx_ring = vmalloc(array_size(sizeof(*rx_ring),
					     adapter->num_rx_queues));
		if (!rx_ring) {
			err = -ENOMEM;
			goto clear_reset;
		}

		for (i = 0; i < adapter->num_rx_queues; i++) {
			/* clone ring and setup updated count */
			rx_ring[i] = *adapter->rx_ring[i];

			/* Clear copied XDP RX-queue info */
			memset(&rx_ring[i].xdp_rxq, 0,
			       sizeof(rx_ring[i].xdp_rxq));

			rx_ring[i].count = new_rx_count;
			err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
			if (err) {
				while (i) {
					i--;
					ixgbevf_free_rx_resources(&rx_ring[i]);
				}

				vfree(rx_ring);
				rx_ring = NULL;

				goto clear_reset;
			}
		}
	}

	/* bring interface down to prepare for update */
	ixgbevf_down(adapter);

	/* Tx */
	if (tx_ring) {
		for (i = 0; i < adapter->num_tx_queues; i++) {
			ixgbevf_free_tx_resources(adapter->tx_ring[i]);
			*adapter->tx_ring[i] = tx_ring[i];
		}
		adapter->tx_ring_count = new_tx_count;

		for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
			ixgbevf_free_tx_resources(adapter->xdp_ring[j]);
			*adapter->xdp_ring[j] = tx_ring[i];
		}
		adapter->xdp_ring_count = new_tx_count;

		vfree(tx_ring);
		tx_ring = NULL;
	}

	/* Rx */
	if (rx_ring) {
		for (i = 0; i < adapter->num_rx_queues; i++) {
			ixgbevf_free_rx_resources(adapter->rx_ring[i]);
			*adapter->rx_ring[i] = rx_ring[i];
		}
		adapter->rx_ring_count = new_rx_count;

		vfree(rx_ring);
		rx_ring = NULL;
	}

	/* restore interface using new values */
	ixgbevf_up(adapter);

clear_reset:
	/* free Tx resources if Rx error is encountered */
	if (tx_ring) {
		for (i = 0;
		     i < adapter->num_tx_queues + adapter->num_xdp_queues; i++)
			ixgbevf_free_tx_resources(&tx_ring[i]);
		vfree(tx_ring);
	}

	clear_bit(__IXGBEVF_RESETTING, &adapter->state);
	return err;
}

static int ixgbevf_get_sset_count(struct net_device *netdev, int stringset)
{
	switch (stringset) {
	case ETH_SS_TEST:
		return IXGBEVF_TEST_LEN;
	case ETH_SS_STATS:
		return IXGBEVF_STATS_LEN;
	case ETH_SS_PRIV_FLAGS:
		return IXGBEVF_PRIV_FLAGS_STR_LEN;
	default:
		return -EINVAL;
	}
}

static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
				      struct ethtool_stats *stats, u64 *data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct rtnl_link_stats64 temp;
	const struct rtnl_link_stats64 *net_stats;
	unsigned int start;
	struct ixgbevf_ring *ring;
	int i, j;
	char *p;

	ixgbevf_update_stats(adapter);
	net_stats = dev_get_stats(netdev, &temp);
	for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
		switch (ixgbevf_gstrings_stats[i].type) {
		case NETDEV_STATS:
			p = (char *)net_stats +
					ixgbevf_gstrings_stats[i].stat_offset;
			break;
		case IXGBEVF_STATS:
			p = (char *)adapter +
					ixgbevf_gstrings_stats[i].stat_offset;
			break;
		default:
			data[i] = 0;
			continue;
		}

		data[i] = (ixgbevf_gstrings_stats[i].sizeof_stat ==
			   sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}

	/* populate Tx queue data */
	for (j = 0; j < adapter->num_tx_queues; j++) {
		ring = adapter->tx_ring[j];
		if (!ring) {
			data[i++] = 0;
			data[i++] = 0;
			continue;
		}

		do {
			start = u64_stats_fetch_begin_irq(&ring->syncp);
			data[i]   = ring->stats.packets;
			data[i + 1] = ring->stats.bytes;
		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
		i += 2;
	}

	/* populate XDP queue data */
	for (j = 0; j < adapter->num_xdp_queues; j++) {
		ring = adapter->xdp_ring[j];
		if (!ring) {
			data[i++] = 0;
			data[i++] = 0;
			continue;
		}

		do {
			start = u64_stats_fetch_begin_irq(&ring->syncp);
			data[i] = ring->stats.packets;
			data[i + 1] = ring->stats.bytes;
		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
		i += 2;
	}

	/* populate Rx queue data */
	for (j = 0; j < adapter->num_rx_queues; j++) {
		ring = adapter->rx_ring[j];
		if (!ring) {
			data[i++] = 0;
			data[i++] = 0;
			continue;
		}

		do {
			start = u64_stats_fetch_begin_irq(&ring->syncp);
			data[i]   = ring->stats.packets;
			data[i + 1] = ring->stats.bytes;
		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
		i += 2;
	}
}

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

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, *ixgbe_gstrings_test,
		       IXGBEVF_TEST_LEN * ETH_GSTRING_LEN);
		break;
	case ETH_SS_STATS:
		for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
			memcpy(p, ixgbevf_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_xdp_queues; i++) {
			sprintf(p, "xdp_queue_%u_packets", i);
			p += ETH_GSTRING_LEN;
			sprintf(p, "xdp_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;
		}
		break;
	case ETH_SS_PRIV_FLAGS:
		memcpy(data, ixgbevf_priv_flags_strings,
		       IXGBEVF_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
		break;
	}
}

static int ixgbevf_link_test(struct ixgbevf_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)
		*data = 1;

	return *data;
}

/* ethtool register test data */
struct ixgbevf_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 VF register test */
static const struct ixgbevf_reg_test reg_test_vf[] = {
	{ IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
	{ IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
	{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
	{ IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
	{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
	{ IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
	{ IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
	{ .reg = 0 }
};

static const u32 register_test_patterns[] = {
	0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
};

static bool reg_pattern_test(struct ixgbevf_adapter *adapter, u64 *data,
			     int reg, u32 mask, u32 write)
{
	u32 pat, val, before;

	if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
		*data = 1;
		return true;
	}
	for (pat = 0; pat < ARRAY_SIZE(register_test_patterns); pat++) {
		before = ixgbevf_read_reg(&adapter->hw, reg);
		ixgbe_write_reg(&adapter->hw, reg,
				register_test_patterns[pat] & write);
		val = ixgbevf_read_reg(&adapter->hw, reg);
		if (val != (register_test_patterns[pat] & write & mask)) {
			hw_dbg(&adapter->hw,
			       "pattern test reg %04X failed: got 0x%08X expected 0x%08X\n",
			       reg, val,
			       register_test_patterns[pat] & write & mask);
			*data = reg;
			ixgbe_write_reg(&adapter->hw, reg, before);
			return true;
		}
		ixgbe_write_reg(&adapter->hw, reg, before);
	}
	return false;
}

static bool reg_set_and_check(struct ixgbevf_adapter *adapter, u64 *data,
			      int reg, u32 mask, u32 write)
{
	u32 val, before;

	if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
		*data = 1;
		return true;
	}
	before = ixgbevf_read_reg(&adapter->hw, reg);
	ixgbe_write_reg(&adapter->hw, reg, write & mask);
	val = ixgbevf_read_reg(&adapter->hw, reg);
	if ((write & mask) != (val & mask)) {
		pr_err("set/check reg %04X test failed: got 0x%08X expected 0x%08X\n",
		       reg, (val & mask), write & mask);
		*data = reg;
		ixgbe_write_reg(&adapter->hw, reg, before);
		return true;
	}
	ixgbe_write_reg(&adapter->hw, reg, before);
	return false;
}

static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
{
	const struct ixgbevf_reg_test *test;
	u32 i;

	if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
		dev_err(&adapter->pdev->dev,
			"Adapter removed - register test blocked\n");
		*data = 1;
		return 1;
	}
	test = reg_test_vf;

	/* Perform 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++) {
			bool b = false;

			switch (test->test_type) {
			case PATTERN_TEST:
				b = reg_pattern_test(adapter, data,
						     test->reg + (i * 0x40),
						     test->mask,
						     test->write);
				break;
			case SET_READ_TEST:
				b = reg_set_and_check(adapter, data,
						      test->reg + (i * 0x40),
						      test->mask,
						      test->write);
				break;
			case WRITE_NO_TEST:
				ixgbe_write_reg(&adapter->hw,
						test->reg + (i * 0x40),
						test->write);
				break;
			case TABLE32_TEST:
				b = reg_pattern_test(adapter, data,
						     test->reg + (i * 4),
						     test->mask,
						     test->write);
				break;
			case TABLE64_TEST_LO:
				b = reg_pattern_test(adapter, data,
						     test->reg + (i * 8),
						     test->mask,
						     test->write);
				break;
			case TABLE64_TEST_HI:
				b = reg_pattern_test(adapter, data,
						     test->reg + 4 + (i * 8),
						     test->mask,
						     test->write);
				break;
			}
			if (b)
				return 1;
		}
		test++;
	}

	*data = 0;
	return *data;
}

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

	if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
		dev_err(&adapter->pdev->dev,
			"Adapter removed - test blocked\n");
		data[0] = 1;
		data[1] = 1;
		eth_test->flags |= ETH_TEST_FL_FAILED;
		return;
	}
	set_bit(__IXGBEVF_TESTING, &adapter->state);
	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
		/* Offline tests */

		hw_dbg(&adapter->hw, "offline testing starting\n");

		/* Link test performed before hardware reset so autoneg doesn't
		 * interfere with test result
		 */
		if (ixgbevf_link_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

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

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

		ixgbevf_reset(adapter);

		clear_bit(__IXGBEVF_TESTING, &adapter->state);
		if (if_running)
			ixgbevf_open(netdev);
	} else {
		hw_dbg(&adapter->hw, "online testing starting\n");
		/* Online tests */
		if (ixgbevf_link_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

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

		clear_bit(__IXGBEVF_TESTING, &adapter->state);
	}
	msleep_interruptible(4 * 1000);
}

static int ixgbevf_nway_reset(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	if (netif_running(netdev))
		ixgbevf_reinit_locked(adapter);

	return 0;
}

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

	/* only valid if in constant ITR mode */
	if (adapter->rx_itr_setting <= 1)
		ec->rx_coalesce_usecs = adapter->rx_itr_setting;
	else
		ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;

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

	/* only valid if in constant ITR mode */
	if (adapter->tx_itr_setting <= 1)
		ec->tx_coalesce_usecs = adapter->tx_itr_setting;
	else
		ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;

	return 0;
}

static int ixgbevf_set_coalesce(struct net_device *netdev,
				struct ethtool_coalesce *ec)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbevf_q_vector *q_vector;
	int num_vectors, i;
	u16 tx_itr_param, rx_itr_param;

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

	if ((ec->rx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)) ||
	    (ec->tx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)))
		return -EINVAL;

	if (ec->rx_coalesce_usecs > 1)
		adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
	else
		adapter->rx_itr_setting = ec->rx_coalesce_usecs;

	if (adapter->rx_itr_setting == 1)
		rx_itr_param = IXGBE_20K_ITR;
	else
		rx_itr_param = adapter->rx_itr_setting;

	if (ec->tx_coalesce_usecs > 1)
		adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
	else
		adapter->tx_itr_setting = ec->tx_coalesce_usecs;

	if (adapter->tx_itr_setting == 1)
		tx_itr_param = IXGBE_12K_ITR;
	else
		tx_itr_param = adapter->tx_itr_setting;

	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->tx.count && !q_vector->rx.count)
			/* Tx only */
			q_vector->itr = tx_itr_param;
		else
			/* Rx only or mixed */
			q_vector->itr = rx_itr_param;
		ixgbevf_write_eitr(q_vector);
	}

	return 0;
}

static int ixgbevf_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
			     u32 *rules __always_unused)
{
	struct ixgbevf_adapter *adapter = netdev_priv(dev);

	switch (info->cmd) {
	case ETHTOOL_GRXRINGS:
		info->data = adapter->num_rx_queues;
		return 0;
	default:
		hw_dbg(&adapter->hw, "Command parameters not supported\n");
		return -EOPNOTSUPP;
	}
}

static u32 ixgbevf_get_rxfh_indir_size(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	if (adapter->hw.mac.type >= ixgbe_mac_X550_vf)
		return IXGBEVF_X550_VFRETA_SIZE;

	return IXGBEVF_82599_RETA_SIZE;
}

static u32 ixgbevf_get_rxfh_key_size(struct net_device *netdev)
{
	return IXGBEVF_RSS_HASH_KEY_SIZE;
}

static int ixgbevf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
			    u8 *hfunc)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	int err = 0;

	if (hfunc)
		*hfunc = ETH_RSS_HASH_TOP;

	if (adapter->hw.mac.type >= ixgbe_mac_X550_vf) {
		if (key)
			memcpy(key, adapter->rss_key,
			       ixgbevf_get_rxfh_key_size(netdev));

		if (indir) {
			int i;

			for (i = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++)
				indir[i] = adapter->rss_indir_tbl[i];
		}
	} else {
		/* If neither indirection table nor hash key was requested
		 *  - just return a success avoiding taking any locks.
		 */
		if (!indir && !key)
			return 0;

		spin_lock_bh(&adapter->mbx_lock);
		if (indir)
			err = ixgbevf_get_reta_locked(&adapter->hw, indir,
						      adapter->num_rx_queues);

		if (!err && key)
			err = ixgbevf_get_rss_key_locked(&adapter->hw, key);

		spin_unlock_bh(&adapter->mbx_lock);
	}

	return err;
}

static u32 ixgbevf_get_priv_flags(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	u32 priv_flags = 0;

	if (adapter->flags & IXGBEVF_FLAGS_LEGACY_RX)
		priv_flags |= IXGBEVF_PRIV_FLAGS_LEGACY_RX;

	return priv_flags;
}

static int ixgbevf_set_priv_flags(struct net_device *netdev, u32 priv_flags)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	unsigned int flags = adapter->flags;

	flags &= ~IXGBEVF_FLAGS_LEGACY_RX;
	if (priv_flags & IXGBEVF_PRIV_FLAGS_LEGACY_RX)
		flags |= IXGBEVF_FLAGS_LEGACY_RX;

	if (flags != adapter->flags) {
		adapter->flags = flags;

		/* reset interface to repopulate queues */
		if (netif_running(netdev))
			ixgbevf_reinit_locked(adapter);
	}

	return 0;
}

static const struct ethtool_ops ixgbevf_ethtool_ops = {
	.get_drvinfo		= ixgbevf_get_drvinfo,
	.get_regs_len		= ixgbevf_get_regs_len,
	.get_regs		= ixgbevf_get_regs,
	.nway_reset		= ixgbevf_nway_reset,
	.get_link		= ethtool_op_get_link,
	.get_ringparam		= ixgbevf_get_ringparam,
	.set_ringparam		= ixgbevf_set_ringparam,
	.get_msglevel		= ixgbevf_get_msglevel,
	.set_msglevel		= ixgbevf_set_msglevel,
	.self_test		= ixgbevf_diag_test,
	.get_sset_count		= ixgbevf_get_sset_count,
	.get_strings		= ixgbevf_get_strings,
	.get_ethtool_stats	= ixgbevf_get_ethtool_stats,
	.get_coalesce		= ixgbevf_get_coalesce,
	.set_coalesce		= ixgbevf_set_coalesce,
	.get_rxnfc		= ixgbevf_get_rxnfc,
	.get_rxfh_indir_size	= ixgbevf_get_rxfh_indir_size,
	.get_rxfh_key_size	= ixgbevf_get_rxfh_key_size,
	.get_rxfh		= ixgbevf_get_rxfh,
	.get_link_ksettings	= ixgbevf_get_link_ksettings,
	.get_priv_flags		= ixgbevf_get_priv_flags,
	.set_priv_flags		= ixgbevf_set_priv_flags,
};

void ixgbevf_set_ethtool_ops(struct net_device *netdev)
{
	netdev->ethtool_ops = &ixgbevf_ethtool_ops;
}