intel-ethernet: rename i40evf to iavf

Rename the Intel Ethernet Adaptive Virtual Function driver
(i40evf) to a new name (iavf) that is more consistent with
the ongoing maintenance of the driver as the universal VF driver
for multiple product lines.

This first patch fixes up the directory names and the .ko name,
intentionally ignoring the function names inside the driver
for now.  Basically this is the simplest patch that gets
the rename done and will be followed by other patches that
rename the internal functions.

This patch also addresses a couple of string/name issues
and updates the Copyright year.

Also, made sure to add a MODULE_ALIAS to the old name.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1054 deletions

diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
deleted file mode 100644
index 50f65ab737c9..000000000000
--- a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
+++ /dev/null
@@ -1,1054 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
-
-/* ethtool support for i40evf */
-#include "i40evf.h"
-
-#include <linux/uaccess.h>
-
-/* ethtool statistics helpers */
-
-/**
- * struct i40e_stats - definition for an ethtool statistic
- * @stat_string: statistic name to display in ethtool -S output
- * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
- * @stat_offset: offsetof() the stat from a base pointer
- *
- * This structure defines a statistic to be added to the ethtool stats buffer.
- * It defines a statistic as offset from a common base pointer. Stats should
- * be defined in constant arrays using the I40E_STAT macro, with every element
- * of the array using the same _type for calculating the sizeof_stat and
- * stat_offset.
- *
- * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
- * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
- * the i40e_add_ethtool_stat() helper function.
- *
- * The @stat_string is interpreted as a format string, allowing formatted
- * values to be inserted while looping over multiple structures for a given
- * statistics array. Thus, every statistic string in an array should have the
- * same type and number of format specifiers, to be formatted by variadic
- * arguments to the i40e_add_stat_string() helper function.
- **/
-struct i40e_stats {
-	char stat_string[ETH_GSTRING_LEN];
-	int sizeof_stat;
-	int stat_offset;
-};
-
-/* Helper macro to define an i40e_stat structure with proper size and type.
- * Use this when defining constant statistics arrays. Note that @_type expects
- * only a type name and is used multiple times.
- */
-#define I40E_STAT(_type, _name, _stat) { \
-	.stat_string = _name, \
-	.sizeof_stat = FIELD_SIZEOF(_type, _stat), \
-	.stat_offset = offsetof(_type, _stat) \
-}
-
-/* Helper macro for defining some statistics directly copied from the netdev
- * stats structure.
- */
-#define I40E_NETDEV_STAT(_net_stat) \
-	I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
-
-/* Helper macro for defining some statistics related to queues */
-#define I40E_QUEUE_STAT(_name, _stat) \
-	I40E_STAT(struct i40e_ring, _name, _stat)
-
-/* Stats associated with a Tx or Rx ring */
-static const struct i40e_stats i40e_gstrings_queue_stats[] = {
-	I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
-	I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
-};
-
-/**
- * i40evf_add_one_ethtool_stat - copy the stat into the supplied buffer
- * @data: location to store the stat value
- * @pointer: basis for where to copy from
- * @stat: the stat definition
- *
- * Copies the stat data defined by the pointer and stat structure pair into
- * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
- * i40evf_add_queue_stats. If the pointer is null, data will be zero'd.
- */
-static void
-i40evf_add_one_ethtool_stat(u64 *data, void *pointer,
-			    const struct i40e_stats *stat)
-{
-	char *p;
-
-	if (!pointer) {
-		/* ensure that the ethtool data buffer is zero'd for any stats
-		 * which don't have a valid pointer.
-		 */
-		*data = 0;
-		return;
-	}
-
-	p = (char *)pointer + stat->stat_offset;
-	switch (stat->sizeof_stat) {
-	case sizeof(u64):
-		*data = *((u64 *)p);
-		break;
-	case sizeof(u32):
-		*data = *((u32 *)p);
-		break;
-	case sizeof(u16):
-		*data = *((u16 *)p);
-		break;
-	case sizeof(u8):
-		*data = *((u8 *)p);
-		break;
-	default:
-		WARN_ONCE(1, "unexpected stat size for %s",
-			  stat->stat_string);
-		*data = 0;
-	}
-}
-
-/**
- * __i40evf_add_ethtool_stats - copy stats into the ethtool supplied buffer
- * @data: ethtool stats buffer
- * @pointer: location to copy stats from
- * @stats: array of stats to copy
- * @size: the size of the stats definition
- *
- * Copy the stats defined by the stats array using the pointer as a base into
- * the data buffer supplied by ethtool. Updates the data pointer to point to
- * the next empty location for successive calls to __i40evf_add_ethtool_stats.
- * If pointer is null, set the data values to zero and update the pointer to
- * skip these stats.
- **/
-static void
-__i40evf_add_ethtool_stats(u64 **data, void *pointer,
-			   const struct i40e_stats stats[],
-			   const unsigned int size)
-{
-	unsigned int i;
-
-	for (i = 0; i < size; i++)
-		i40evf_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
-}
-
-/**
- * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
- * @data: ethtool stats buffer
- * @pointer: location where stats are stored
- * @stats: static const array of stat definitions
- *
- * Macro to ease the use of __i40evf_add_ethtool_stats by taking a static
- * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
- * ensuring that we pass the size associated with the given stats array.
- *
- * The parameter @stats is evaluated twice, so parameters with side effects
- * should be avoided.
- **/
-#define i40e_add_ethtool_stats(data, pointer, stats) \
-	__i40evf_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
-
-/**
- * i40evf_add_queue_stats - copy queue statistics into supplied buffer
- * @data: ethtool stats buffer
- * @ring: the ring to copy
- *
- * Queue statistics must be copied while protected by
- * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
- * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
- * ring pointer is null, zero out the queue stat values and update the data
- * pointer. Otherwise safely copy the stats from the ring into the supplied
- * buffer and update the data pointer when finished.
- *
- * This function expects to be called while under rcu_read_lock().
- **/
-static void
-i40evf_add_queue_stats(u64 **data, struct i40e_ring *ring)
-{
-	const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
-	const struct i40e_stats *stats = i40e_gstrings_queue_stats;
-	unsigned int start;
-	unsigned int i;
-
-	/* To avoid invalid statistics values, ensure that we keep retrying
-	 * the copy until we get a consistent value according to
-	 * u64_stats_fetch_retry_irq. But first, make sure our ring is
-	 * non-null before attempting to access its syncp.
-	 */
-	do {
-		start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
-		for (i = 0; i < size; i++) {
-			i40evf_add_one_ethtool_stat(&(*data)[i], ring,
-						    &stats[i]);
-		}
-	} while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
-
-	/* Once we successfully copy the stats in, update the data pointer */
-	*data += size;
-}
-
-/**
- * __i40e_add_stat_strings - copy stat strings into ethtool buffer
- * @p: ethtool supplied buffer
- * @stats: stat definitions array
- * @size: size of the stats array
- *
- * Format and copy the strings described by stats into the buffer pointed at
- * by p.
- **/
-static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
-				    const unsigned int size, ...)
-{
-	unsigned int i;
-
-	for (i = 0; i < size; i++) {
-		va_list args;
-
-		va_start(args, size);
-		vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
-		*p += ETH_GSTRING_LEN;
-		va_end(args);
-	}
-}
-
-/**
- * 40e_add_stat_strings - copy stat strings into ethtool buffer
- * @p: ethtool supplied buffer
- * @stats: stat definitions array
- *
- * Format and copy the strings described by the const static stats value into
- * the buffer pointed at by p.
- *
- * The parameter @stats is evaluated twice, so parameters with side effects
- * should be avoided. Additionally, stats must be an array such that
- * ARRAY_SIZE can be called on it.
- **/
-#define i40e_add_stat_strings(p, stats, ...) \
-	__i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
-
-#define I40EVF_STAT(_name, _stat) \
-	I40E_STAT(struct i40evf_adapter, _name, _stat)
-
-static const struct i40e_stats i40evf_gstrings_stats[] = {
-	I40EVF_STAT("rx_bytes", current_stats.rx_bytes),
-	I40EVF_STAT("rx_unicast", current_stats.rx_unicast),
-	I40EVF_STAT("rx_multicast", current_stats.rx_multicast),
-	I40EVF_STAT("rx_broadcast", current_stats.rx_broadcast),
-	I40EVF_STAT("rx_discards", current_stats.rx_discards),
-	I40EVF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
-	I40EVF_STAT("tx_bytes", current_stats.tx_bytes),
-	I40EVF_STAT("tx_unicast", current_stats.tx_unicast),
-	I40EVF_STAT("tx_multicast", current_stats.tx_multicast),
-	I40EVF_STAT("tx_broadcast", current_stats.tx_broadcast),
-	I40EVF_STAT("tx_discards", current_stats.tx_discards),
-	I40EVF_STAT("tx_errors", current_stats.tx_errors),
-};
-
-#define I40EVF_STATS_LEN	ARRAY_SIZE(i40evf_gstrings_stats)
-
-#define I40EVF_QUEUE_STATS_LEN	ARRAY_SIZE(i40e_gstrings_queue_stats)
-
-/* For now we have one and only one private flag and it is only defined
- * when we have support for the SKIP_CPU_SYNC DMA attribute.  Instead
- * of leaving all this code sitting around empty we will strip it unless
- * our one private flag is actually available.
- */
-struct i40evf_priv_flags {
-	char flag_string[ETH_GSTRING_LEN];
-	u32 flag;
-	bool read_only;
-};
-
-#define I40EVF_PRIV_FLAG(_name, _flag, _read_only) { \
-	.flag_string = _name, \
-	.flag = _flag, \
-	.read_only = _read_only, \
-}
-
-static const struct i40evf_priv_flags i40evf_gstrings_priv_flags[] = {
-	I40EVF_PRIV_FLAG("legacy-rx", I40EVF_FLAG_LEGACY_RX, 0),
-};
-
-#define I40EVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40evf_gstrings_priv_flags)
-
-/**
- * i40evf_get_link_ksettings - Get Link Speed and Duplex settings
- * @netdev: network interface device structure
- * @cmd: ethtool command
- *
- * Reports speed/duplex settings. Because this is a VF, we don't know what
- * kind of link we really have, so we fake it.
- **/
-static int i40evf_get_link_ksettings(struct net_device *netdev,
-				     struct ethtool_link_ksettings *cmd)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	ethtool_link_ksettings_zero_link_mode(cmd, supported);
-	cmd->base.autoneg = AUTONEG_DISABLE;
-	cmd->base.port = PORT_NONE;
-	/* Set speed and duplex */
-	switch (adapter->link_speed) {
-	case I40E_LINK_SPEED_40GB:
-		cmd->base.speed = SPEED_40000;
-		break;
-	case I40E_LINK_SPEED_25GB:
-#ifdef SPEED_25000
-		cmd->base.speed = SPEED_25000;
-#else
-		netdev_info(netdev,
-			    "Speed is 25G, display not supported by this version of ethtool.\n");
-#endif
-		break;
-	case I40E_LINK_SPEED_20GB:
-		cmd->base.speed = SPEED_20000;
-		break;
-	case I40E_LINK_SPEED_10GB:
-		cmd->base.speed = SPEED_10000;
-		break;
-	case I40E_LINK_SPEED_1GB:
-		cmd->base.speed = SPEED_1000;
-		break;
-	case I40E_LINK_SPEED_100MB:
-		cmd->base.speed = SPEED_100;
-		break;
-	default:
-		break;
-	}
-	cmd->base.duplex = DUPLEX_FULL;
-
-	return 0;
-}
-
-/**
- * i40evf_get_sset_count - Get length of string set
- * @netdev: network interface device structure
- * @sset: id of string set
- *
- * Reports size of various string tables.
- **/
-static int i40evf_get_sset_count(struct net_device *netdev, int sset)
-{
-	if (sset == ETH_SS_STATS)
-		return I40EVF_STATS_LEN +
-			(I40EVF_QUEUE_STATS_LEN * 2 * I40EVF_MAX_REQ_QUEUES);
-	else if (sset == ETH_SS_PRIV_FLAGS)
-		return I40EVF_PRIV_FLAGS_STR_LEN;
-	else
-		return -EINVAL;
-}
-
-/**
- * i40evf_get_ethtool_stats - report device statistics
- * @netdev: network interface device structure
- * @stats: ethtool statistics structure
- * @data: pointer to data buffer
- *
- * All statistics are added to the data buffer as an array of u64.
- **/
-static void i40evf_get_ethtool_stats(struct net_device *netdev,
-				     struct ethtool_stats *stats, u64 *data)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	unsigned int i;
-
-	i40e_add_ethtool_stats(&data, adapter, i40evf_gstrings_stats);
-
-	rcu_read_lock();
-	for (i = 0; i < I40EVF_MAX_REQ_QUEUES; i++) {
-		struct i40e_ring *ring;
-
-		/* Avoid accessing un-allocated queues */
-		ring = (i < adapter->num_active_queues ?
-			&adapter->tx_rings[i] : NULL);
-		i40evf_add_queue_stats(&data, ring);
-
-		/* Avoid accessing un-allocated queues */
-		ring = (i < adapter->num_active_queues ?
-			&adapter->rx_rings[i] : NULL);
-		i40evf_add_queue_stats(&data, ring);
-	}
-	rcu_read_unlock();
-}
-
-/**
- * i40evf_get_priv_flag_strings - Get private flag strings
- * @netdev: network interface device structure
- * @data: buffer for string data
- *
- * Builds the private flags string table
- **/
-static void i40evf_get_priv_flag_strings(struct net_device *netdev, u8 *data)
-{
-	unsigned int i;
-
-	for (i = 0; i < I40EVF_PRIV_FLAGS_STR_LEN; i++) {
-		snprintf(data, ETH_GSTRING_LEN, "%s",
-			 i40evf_gstrings_priv_flags[i].flag_string);
-		data += ETH_GSTRING_LEN;
-	}
-}
-
-/**
- * i40evf_get_stat_strings - Get stat strings
- * @netdev: network interface device structure
- * @data: buffer for string data
- *
- * Builds the statistics string table
- **/
-static void i40evf_get_stat_strings(struct net_device *netdev, u8 *data)
-{
-	unsigned int i;
-
-	i40e_add_stat_strings(&data, i40evf_gstrings_stats);
-
-	/* Queues are always allocated in pairs, so we just use num_tx_queues
-	 * for both Tx and Rx queues.
-	 */
-	for (i = 0; i < netdev->num_tx_queues; i++) {
-		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
-				      "tx", i);
-		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
-				      "rx", i);
-	}
-}
-
-/**
- * i40evf_get_strings - Get string set
- * @netdev: network interface device structure
- * @sset: id of string set
- * @data: buffer for string data
- *
- * Builds string tables for various string sets
- **/
-static void i40evf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
-{
-	switch (sset) {
-	case ETH_SS_STATS:
-		i40evf_get_stat_strings(netdev, data);
-		break;
-	case ETH_SS_PRIV_FLAGS:
-		i40evf_get_priv_flag_strings(netdev, data);
-		break;
-	default:
-		break;
-	}
-}
-
-/**
- * i40evf_get_priv_flags - report device private flags
- * @netdev: network interface device structure
- *
- * The get string set count and the string set should be matched for each
- * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
- * array.
- *
- * Returns a u32 bitmap of flags.
- **/
-static u32 i40evf_get_priv_flags(struct net_device *netdev)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	u32 i, ret_flags = 0;
-
-	for (i = 0; i < I40EVF_PRIV_FLAGS_STR_LEN; i++) {
-		const struct i40evf_priv_flags *priv_flags;
-
-		priv_flags = &i40evf_gstrings_priv_flags[i];
-
-		if (priv_flags->flag & adapter->flags)
-			ret_flags |= BIT(i);
-	}
-
-	return ret_flags;
-}
-
-/**
- * i40evf_set_priv_flags - set private flags
- * @netdev: network interface device structure
- * @flags: bit flags to be set
- **/
-static int i40evf_set_priv_flags(struct net_device *netdev, u32 flags)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	u32 orig_flags, new_flags, changed_flags;
-	u32 i;
-
-	orig_flags = READ_ONCE(adapter->flags);
-	new_flags = orig_flags;
-
-	for (i = 0; i < I40EVF_PRIV_FLAGS_STR_LEN; i++) {
-		const struct i40evf_priv_flags *priv_flags;
-
-		priv_flags = &i40evf_gstrings_priv_flags[i];
-
-		if (flags & BIT(i))
-			new_flags |= priv_flags->flag;
-		else
-			new_flags &= ~(priv_flags->flag);
-
-		if (priv_flags->read_only &&
-		    ((orig_flags ^ new_flags) & ~BIT(i)))
-			return -EOPNOTSUPP;
-	}
-
-	/* Before we finalize any flag changes, any checks which we need to
-	 * perform to determine if the new flags will be supported should go
-	 * here...
-	 */
-
-	/* Compare and exchange the new flags into place. If we failed, that
-	 * is if cmpxchg returns anything but the old value, this means
-	 * something else must have modified the flags variable since we
-	 * copied it. We'll just punt with an error and log something in the
-	 * message buffer.
-	 */
-	if (cmpxchg(&adapter->flags, orig_flags, new_flags) != orig_flags) {
-		dev_warn(&adapter->pdev->dev,
-			 "Unable to update adapter->flags as it was modified by another thread...\n");
-		return -EAGAIN;
-	}
-
-	changed_flags = orig_flags ^ new_flags;
-
-	/* Process any additional changes needed as a result of flag changes.
-	 * The changed_flags value reflects the list of bits that were changed
-	 * in the code above.
-	 */
-
-	/* issue a reset to force legacy-rx change to take effect */
-	if (changed_flags & I40EVF_FLAG_LEGACY_RX) {
-		if (netif_running(netdev)) {
-			adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
-			schedule_work(&adapter->reset_task);
-		}
-	}
-
-	return 0;
-}
-
-/**
- * i40evf_get_msglevel - Get debug message level
- * @netdev: network interface device structure
- *
- * Returns current debug message level.
- **/
-static u32 i40evf_get_msglevel(struct net_device *netdev)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	return adapter->msg_enable;
-}
-
-/**
- * i40evf_set_msglevel - Set debug message level
- * @netdev: network interface device structure
- * @data: message level
- *
- * Set current debug message level. Higher values cause the driver to
- * be noisier.
- **/
-static void i40evf_set_msglevel(struct net_device *netdev, u32 data)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	if (I40E_DEBUG_USER & data)
-		adapter->hw.debug_mask = data;
-	adapter->msg_enable = data;
-}
-
-/**
- * i40evf_get_drvinfo - Get driver info
- * @netdev: network interface device structure
- * @drvinfo: ethool driver info structure
- *
- * Returns information about the driver and device for display to the user.
- **/
-static void i40evf_get_drvinfo(struct net_device *netdev,
-			       struct ethtool_drvinfo *drvinfo)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	strlcpy(drvinfo->driver, i40evf_driver_name, 32);
-	strlcpy(drvinfo->version, i40evf_driver_version, 32);
-	strlcpy(drvinfo->fw_version, "N/A", 4);
-	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
-	drvinfo->n_priv_flags = I40EVF_PRIV_FLAGS_STR_LEN;
-}
-
-/**
- * i40evf_get_ringparam - Get ring parameters
- * @netdev: network interface device structure
- * @ring: ethtool ringparam structure
- *
- * Returns current ring parameters. TX and RX rings are reported separately,
- * but the number of rings is not reported.
- **/
-static void i40evf_get_ringparam(struct net_device *netdev,
-				 struct ethtool_ringparam *ring)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	ring->rx_max_pending = I40EVF_MAX_RXD;
-	ring->tx_max_pending = I40EVF_MAX_TXD;
-	ring->rx_pending = adapter->rx_desc_count;
-	ring->tx_pending = adapter->tx_desc_count;
-}
-
-/**
- * i40evf_set_ringparam - Set ring parameters
- * @netdev: network interface device structure
- * @ring: ethtool ringparam structure
- *
- * Sets ring parameters. TX and RX rings are controlled separately, but the
- * number of rings is not specified, so all rings get the same settings.
- **/
-static int i40evf_set_ringparam(struct net_device *netdev,
-				struct ethtool_ringparam *ring)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	u32 new_rx_count, new_tx_count;
-
-	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
-		return -EINVAL;
-
-	new_tx_count = clamp_t(u32, ring->tx_pending,
-			       I40EVF_MIN_TXD,
-			       I40EVF_MAX_TXD);
-	new_tx_count = ALIGN(new_tx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
-
-	new_rx_count = clamp_t(u32, ring->rx_pending,
-			       I40EVF_MIN_RXD,
-			       I40EVF_MAX_RXD);
-	new_rx_count = ALIGN(new_rx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
-
-	/* if nothing to do return success */
-	if ((new_tx_count == adapter->tx_desc_count) &&
-	    (new_rx_count == adapter->rx_desc_count))
-		return 0;
-
-	adapter->tx_desc_count = new_tx_count;
-	adapter->rx_desc_count = new_rx_count;
-
-	if (netif_running(netdev)) {
-		adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
-		schedule_work(&adapter->reset_task);
-	}
-
-	return 0;
-}
-
-/**
- * __i40evf_get_coalesce - get per-queue coalesce settings
- * @netdev: the netdev to check
- * @ec: ethtool coalesce data structure
- * @queue: which queue to pick
- *
- * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
- * are per queue. If queue is <0 then we default to queue 0 as the
- * representative value.
- **/
-static int __i40evf_get_coalesce(struct net_device *netdev,
-				 struct ethtool_coalesce *ec,
-				 int queue)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	struct i40e_vsi *vsi = &adapter->vsi;
-	struct i40e_ring *rx_ring, *tx_ring;
-
-	ec->tx_max_coalesced_frames = vsi->work_limit;
-	ec->rx_max_coalesced_frames = vsi->work_limit;
-
-	/* Rx and Tx usecs per queue value. If user doesn't specify the
-	 * queue, return queue 0's value to represent.
-	 */
-	if (queue < 0)
-		queue = 0;
-	else if (queue >= adapter->num_active_queues)
-		return -EINVAL;
-
-	rx_ring = &adapter->rx_rings[queue];
-	tx_ring = &adapter->tx_rings[queue];
-
-	if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
-		ec->use_adaptive_rx_coalesce = 1;
-
-	if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
-		ec->use_adaptive_tx_coalesce = 1;
-
-	ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
-	ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
-
-	return 0;
-}
-
-/**
- * i40evf_get_coalesce - Get interrupt coalescing settings
- * @netdev: network interface device structure
- * @ec: ethtool coalesce structure
- *
- * Returns current coalescing settings. This is referred to elsewhere in the
- * driver as Interrupt Throttle Rate, as this is how the hardware describes
- * this functionality. Note that if per-queue settings have been modified this
- * only represents the settings of queue 0.
- **/
-static int i40evf_get_coalesce(struct net_device *netdev,
-			       struct ethtool_coalesce *ec)
-{
-	return __i40evf_get_coalesce(netdev, ec, -1);
-}
-
-/**
- * i40evf_get_per_queue_coalesce - get coalesce values for specific queue
- * @netdev: netdev to read
- * @ec: coalesce settings from ethtool
- * @queue: the queue to read
- *
- * Read specific queue's coalesce settings.
- **/
-static int i40evf_get_per_queue_coalesce(struct net_device *netdev,
-					 u32 queue,
-					 struct ethtool_coalesce *ec)
-{
-	return __i40evf_get_coalesce(netdev, ec, queue);
-}
-
-/**
- * i40evf_set_itr_per_queue - set ITR values for specific queue
- * @adapter: the VF adapter struct to set values for
- * @ec: coalesce settings from ethtool
- * @queue: the queue to modify
- *
- * Change the ITR settings for a specific queue.
- **/
-static void i40evf_set_itr_per_queue(struct i40evf_adapter *adapter,
-				     struct ethtool_coalesce *ec,
-				     int queue)
-{
-	struct i40e_ring *rx_ring = &adapter->rx_rings[queue];
-	struct i40e_ring *tx_ring = &adapter->tx_rings[queue];
-	struct i40e_q_vector *q_vector;
-
-	rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
-	tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
-
-	rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
-	if (!ec->use_adaptive_rx_coalesce)
-		rx_ring->itr_setting ^= I40E_ITR_DYNAMIC;
-
-	tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
-	if (!ec->use_adaptive_tx_coalesce)
-		tx_ring->itr_setting ^= I40E_ITR_DYNAMIC;
-
-	q_vector = rx_ring->q_vector;
-	q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
-
-	q_vector = tx_ring->q_vector;
-	q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
-
-	/* The interrupt handler itself will take care of programming
-	 * the Tx and Rx ITR values based on the values we have entered
-	 * into the q_vector, no need to write the values now.
-	 */
-}
-
-/**
- * __i40evf_set_coalesce - set coalesce settings for particular queue
- * @netdev: the netdev to change
- * @ec: ethtool coalesce settings
- * @queue: the queue to change
- *
- * Sets the coalesce settings for a particular queue.
- **/
-static int __i40evf_set_coalesce(struct net_device *netdev,
-				 struct ethtool_coalesce *ec,
-				 int queue)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	struct i40e_vsi *vsi = &adapter->vsi;
-	int i;
-
-	if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
-		vsi->work_limit = ec->tx_max_coalesced_frames_irq;
-
-	if (ec->rx_coalesce_usecs == 0) {
-		if (ec->use_adaptive_rx_coalesce)
-			netif_info(adapter, drv, netdev, "rx-usecs=0, need to disable adaptive-rx for a complete disable\n");
-	} else if ((ec->rx_coalesce_usecs < I40E_MIN_ITR) ||
-		   (ec->rx_coalesce_usecs > I40E_MAX_ITR)) {
-		netif_info(adapter, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
-		return -EINVAL;
-	}
-
-	else
-	if (ec->tx_coalesce_usecs == 0) {
-		if (ec->use_adaptive_tx_coalesce)
-			netif_info(adapter, drv, netdev, "tx-usecs=0, need to disable adaptive-tx for a complete disable\n");
-	} else if ((ec->tx_coalesce_usecs < I40E_MIN_ITR) ||
-		   (ec->tx_coalesce_usecs > I40E_MAX_ITR)) {
-		netif_info(adapter, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
-		return -EINVAL;
-	}
-
-	/* Rx and Tx usecs has per queue value. If user doesn't specify the
-	 * queue, apply to all queues.
-	 */
-	if (queue < 0) {
-		for (i = 0; i < adapter->num_active_queues; i++)
-			i40evf_set_itr_per_queue(adapter, ec, i);
-	} else if (queue < adapter->num_active_queues) {
-		i40evf_set_itr_per_queue(adapter, ec, queue);
-	} else {
-		netif_info(adapter, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
-			   adapter->num_active_queues - 1);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * i40evf_set_coalesce - Set interrupt coalescing settings
- * @netdev: network interface device structure
- * @ec: ethtool coalesce structure
- *
- * Change current coalescing settings for every queue.
- **/
-static int i40evf_set_coalesce(struct net_device *netdev,
-			       struct ethtool_coalesce *ec)
-{
-	return __i40evf_set_coalesce(netdev, ec, -1);
-}
-
-/**
- * i40evf_set_per_queue_coalesce - set specific queue's coalesce settings
- * @netdev: the netdev to change
- * @ec: ethtool's coalesce settings
- * @queue: the queue to modify
- *
- * Modifies a specific queue's coalesce settings.
- */
-static int i40evf_set_per_queue_coalesce(struct net_device *netdev,
-					 u32 queue,
-					 struct ethtool_coalesce *ec)
-{
-	return __i40evf_set_coalesce(netdev, ec, queue);
-}
-
-/**
- * i40evf_get_rxnfc - command to get RX flow classification rules
- * @netdev: network interface device structure
- * @cmd: ethtool rxnfc command
- * @rule_locs: pointer to store rule locations
- *
- * Returns Success if the command is supported.
- **/
-static int i40evf_get_rxnfc(struct net_device *netdev,
-			    struct ethtool_rxnfc *cmd,
-			    u32 *rule_locs)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	int ret = -EOPNOTSUPP;
-
-	switch (cmd->cmd) {
-	case ETHTOOL_GRXRINGS:
-		cmd->data = adapter->num_active_queues;
-		ret = 0;
-		break;
-	case ETHTOOL_GRXFH:
-		netdev_info(netdev,
-			    "RSS hash info is not available to vf, use pf.\n");
-		break;
-	default:
-		break;
-	}
-
-	return ret;
-}
-/**
- * i40evf_get_channels: get the number of channels supported by the device
- * @netdev: network interface device structure
- * @ch: channel information structure
- *
- * For the purposes of our device, we only use combined channels, i.e. a tx/rx
- * queue pair. Report one extra channel to match our "other" MSI-X vector.
- **/
-static void i40evf_get_channels(struct net_device *netdev,
-				struct ethtool_channels *ch)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	/* Report maximum channels */
-	ch->max_combined = I40EVF_MAX_REQ_QUEUES;
-
-	ch->max_other = NONQ_VECS;
-	ch->other_count = NONQ_VECS;
-
-	ch->combined_count = adapter->num_active_queues;
-}
-
-/**
- * i40evf_set_channels: set the new channel count
- * @netdev: network interface device structure
- * @ch: channel information structure
- *
- * Negotiate a new number of channels with the PF then do a reset.  During
- * reset we'll realloc queues and fix the RSS table.  Returns 0 on success,
- * negative on failure.
- **/
-static int i40evf_set_channels(struct net_device *netdev,
-			       struct ethtool_channels *ch)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	int num_req = ch->combined_count;
-
-	if (num_req != adapter->num_active_queues &&
-	    !(adapter->vf_res->vf_cap_flags &
-	      VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)) {
-		dev_info(&adapter->pdev->dev, "PF is not capable of queue negotiation.\n");
-		return -EINVAL;
-	}
-
-	if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
-	    adapter->num_tc) {
-		dev_info(&adapter->pdev->dev, "Cannot set channels since ADq is enabled.\n");
-		return -EINVAL;
-	}
-
-	/* All of these should have already been checked by ethtool before this
-	 * even gets to us, but just to be sure.
-	 */
-	if (num_req <= 0 || num_req > I40EVF_MAX_REQ_QUEUES)
-		return -EINVAL;
-
-	if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS)
-		return -EINVAL;
-
-	adapter->num_req_queues = num_req;
-	return i40evf_request_queues(adapter, num_req);
-}
-
-/**
- * i40evf_get_rxfh_key_size - get the RSS hash key size
- * @netdev: network interface device structure
- *
- * Returns the table size.
- **/
-static u32 i40evf_get_rxfh_key_size(struct net_device *netdev)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	return adapter->rss_key_size;
-}
-
-/**
- * i40evf_get_rxfh_indir_size - get the rx flow hash indirection table size
- * @netdev: network interface device structure
- *
- * Returns the table size.
- **/
-static u32 i40evf_get_rxfh_indir_size(struct net_device *netdev)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-
-	return adapter->rss_lut_size;
-}
-
-/**
- * i40evf_get_rxfh - get the rx flow hash indirection table
- * @netdev: network interface device structure
- * @indir: indirection table
- * @key: hash key
- * @hfunc: hash function in use
- *
- * Reads the indirection table directly from the hardware. Always returns 0.
- **/
-static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
-			   u8 *hfunc)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	u16 i;
-
-	if (hfunc)
-		*hfunc = ETH_RSS_HASH_TOP;
-	if (!indir)
-		return 0;
-
-	memcpy(key, adapter->rss_key, adapter->rss_key_size);
-
-	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
-	for (i = 0; i < adapter->rss_lut_size; i++)
-		indir[i] = (u32)adapter->rss_lut[i];
-
-	return 0;
-}
-
-/**
- * i40evf_set_rxfh - set the rx flow hash indirection table
- * @netdev: network interface device structure
- * @indir: indirection table
- * @key: hash key
- * @hfunc: hash function to use
- *
- * Returns -EINVAL if the table specifies an inavlid queue id, otherwise
- * returns 0 after programming the table.
- **/
-static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
-			   const u8 *key, const u8 hfunc)
-{
-	struct i40evf_adapter *adapter = netdev_priv(netdev);
-	u16 i;
-
-	/* We do not allow change in unsupported parameters */
-	if (key ||
-	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
-		return -EOPNOTSUPP;
-	if (!indir)
-		return 0;
-
-	if (key) {
-		memcpy(adapter->rss_key, key, adapter->rss_key_size);
-	}
-
-	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
-	for (i = 0; i < adapter->rss_lut_size; i++)
-		adapter->rss_lut[i] = (u8)(indir[i]);
-
-	return i40evf_config_rss(adapter);
-}
-
-static const struct ethtool_ops i40evf_ethtool_ops = {
-	.get_drvinfo		= i40evf_get_drvinfo,
-	.get_link		= ethtool_op_get_link,
-	.get_ringparam		= i40evf_get_ringparam,
-	.set_ringparam		= i40evf_set_ringparam,
-	.get_strings		= i40evf_get_strings,
-	.get_ethtool_stats	= i40evf_get_ethtool_stats,
-	.get_sset_count		= i40evf_get_sset_count,
-	.get_priv_flags		= i40evf_get_priv_flags,
-	.set_priv_flags		= i40evf_set_priv_flags,
-	.get_msglevel		= i40evf_get_msglevel,
-	.set_msglevel		= i40evf_set_msglevel,
-	.get_coalesce		= i40evf_get_coalesce,
-	.set_coalesce		= i40evf_set_coalesce,
-	.get_per_queue_coalesce = i40evf_get_per_queue_coalesce,
-	.set_per_queue_coalesce = i40evf_set_per_queue_coalesce,
-	.get_rxnfc		= i40evf_get_rxnfc,
-	.get_rxfh_indir_size	= i40evf_get_rxfh_indir_size,
-	.get_rxfh		= i40evf_get_rxfh,
-	.set_rxfh		= i40evf_set_rxfh,
-	.get_channels		= i40evf_get_channels,
-	.set_channels		= i40evf_set_channels,
-	.get_rxfh_key_size	= i40evf_get_rxfh_key_size,
-	.get_link_ksettings	= i40evf_get_link_ksettings,
-};
-
-/**
- * i40evf_set_ethtool_ops - Initialize ethtool ops struct
- * @netdev: network interface device structure
- *
- * Sets ethtool ops struct in our netdev so that ethtool can call
- * our functions.
- **/
-void i40evf_set_ethtool_ops(struct net_device *netdev)
-{
-	netdev->ethtool_ops = &i40evf_ethtool_ops;
-}