[deliverable/linux.git] / drivers / net / ethernet / intel / i40evf / i40evf_ethtool.c

/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
 * Copyright(c) 2013 - 2016 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, see <http://www.gnu.org/licenses/>.
 *
 * 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 i40evf */
#include "i40evf.h"

#include <linux/uaccess.h>

struct i40evf_stats {
	char stat_string[ETH_GSTRING_LEN];
	int stat_offset;
};

#define I40EVF_STAT(_name, _stat) { \
	.stat_string = _name, \
	.stat_offset = offsetof(struct i40evf_adapter, _stat) \
}

/* All stats are u64, so we don't need to track the size of the field. */
static const struct i40evf_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_GLOBAL_STATS_LEN ARRAY_SIZE(i40evf_gstrings_stats)
#define I40EVF_QUEUE_STATS_LEN(_dev) \
	(((struct i40evf_adapter *)\
		netdev_priv(_dev))->num_active_queues \
		  * 2 * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
#define I40EVF_STATS_LEN(_dev) \
	(I40EVF_GLOBAL_STATS_LEN + I40EVF_QUEUE_STATS_LEN(_dev))

/**
 * i40evf_get_settings - Get Link Speed and Duplex settings
 * @netdev: network interface device structure
 * @ecmd: 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_settings(struct net_device *netdev,
			       struct ethtool_cmd *ecmd)
{
	struct i40evf_adapter *adapter = netdev_priv(netdev);

	ecmd->supported = 0;
	ecmd->autoneg = AUTONEG_DISABLE;
	ecmd->transceiver = XCVR_DUMMY1;
	ecmd->port = PORT_NONE;
	/* Set speed and duplex */
	switch (adapter->link_speed) {
	case I40E_LINK_SPEED_40GB:
		ethtool_cmd_speed_set(ecmd, SPEED_40000);
		break;
	case I40E_LINK_SPEED_20GB:
		ethtool_cmd_speed_set(ecmd, SPEED_20000);
		break;
	case I40E_LINK_SPEED_10GB:
		ethtool_cmd_speed_set(ecmd, SPEED_10000);
		break;
	case I40E_LINK_SPEED_1GB:
		ethtool_cmd_speed_set(ecmd, SPEED_1000);
		break;
	case I40E_LINK_SPEED_100MB:
		ethtool_cmd_speed_set(ecmd, SPEED_100);
		break;
	default:
		break;
	}
	ecmd->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 string table. This driver only supports
 * strings for statistics.
 **/
static int i40evf_get_sset_count(struct net_device *netdev, int sset)
{
	if (sset == ETH_SS_STATS)
		return I40EVF_STATS_LEN(netdev);
	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);
	int i, j;
	char *p;

	for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
		p = (char *)adapter + i40evf_gstrings_stats[i].stat_offset;
		data[i] =  *(u64 *)p;
	}
	for (j = 0; j < adapter->num_active_queues; j++) {
		data[i++] = adapter->tx_rings[j].stats.packets;
		data[i++] = adapter->tx_rings[j].stats.bytes;
	}
	for (j = 0; j < adapter->num_active_queues; j++) {
		data[i++] = adapter->rx_rings[j].stats.packets;
		data[i++] = adapter->rx_rings[j].stats.bytes;
	}
}

/**
 * i40evf_get_strings - Get string set
 * @netdev: network interface device structure
 * @sset: id of string set
 * @data: buffer for string data
 *
 * Builds stats string table.
 **/
static void i40evf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
{
	struct i40evf_adapter *adapter = netdev_priv(netdev);
	u8 *p = data;
	int i;

	if (sset == ETH_SS_STATS) {
		for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
			memcpy(p, i40evf_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_active_queues; i++) {
			snprintf(p, ETH_GSTRING_LEN, "tx-%u.packets", i);
			p += ETH_GSTRING_LEN;
			snprintf(p, ETH_GSTRING_LEN, "tx-%u.bytes", i);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_active_queues; i++) {
			snprintf(p, ETH_GSTRING_LEN, "rx-%u.packets", i);
			p += ETH_GSTRING_LEN;
			snprintf(p, ETH_GSTRING_LEN, "rx-%u.bytes", i);
			p += ETH_GSTRING_LEN;
		}
	}
}

/**
 * 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);
}

/**
 * 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 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.
 **/
static int i40evf_get_coalesce(struct net_device *netdev,
			       struct ethtool_coalesce *ec)
{
	struct i40evf_adapter *adapter = netdev_priv(netdev);
	struct i40e_vsi *vsi = &adapter->vsi;

	ec->tx_max_coalesced_frames = vsi->work_limit;
	ec->rx_max_coalesced_frames = vsi->work_limit;

	if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
		ec->use_adaptive_rx_coalesce = 1;

	if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
		ec->use_adaptive_tx_coalesce = 1;

	ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC;
	ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC;

	return 0;
}

/**
 * i40evf_set_coalesce - Set interrupt coalescing settings
 * @netdev: network interface device structure
 * @ec: ethtool coalesce structure
 *
 * Change current coalescing settings.
 **/
static int i40evf_set_coalesce(struct net_device *netdev,
			       struct ethtool_coalesce *ec)
{
	struct i40evf_adapter *adapter = netdev_priv(netdev);
	struct i40e_hw *hw = &adapter->hw;
	struct i40e_vsi *vsi = &adapter->vsi;
	struct i40e_q_vector *q_vector;
	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 >= (I40E_MIN_ITR << 1)) &&
	    (ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
		vsi->rx_itr_setting = ec->rx_coalesce_usecs;

	else
		return -EINVAL;

	if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
	    (ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
		vsi->tx_itr_setting = ec->tx_coalesce_usecs;
	else if (ec->use_adaptive_tx_coalesce)
		vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
				       ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
	else
		return -EINVAL;

	if (ec->use_adaptive_rx_coalesce)
		vsi->rx_itr_setting |= I40E_ITR_DYNAMIC;
	else
		vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC;

	if (ec->use_adaptive_tx_coalesce)
		vsi->tx_itr_setting |= I40E_ITR_DYNAMIC;
	else
		vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;

	for (i = 0; i < adapter->num_msix_vectors - NONQ_VECS; i++) {
		q_vector = &adapter->q_vectors[i];
		q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
		wr32(hw, I40E_VFINT_ITRN1(0, i), q_vector->rx.itr);
		q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
		wr32(hw, I40E_VFINT_ITRN1(1, i), q_vector->tx.itr);
		i40e_flush(hw);
	}

	return 0;
}

/**
 * i40evf_get_rxnfc - command to get RX flow classification rules
 * @netdev: network interface device structure
 * @cmd: ethtool rxnfc command
 *
 * 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 = adapter->num_active_queues;

	ch->max_other = NONQ_VECS;
	ch->other_count = NONQ_VECS;

	ch->combined_count = adapter->num_active_queues;
}

/**
 * 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
 *
 * 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
 *
 * 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_settings		= i40evf_get_settings,
	.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_msglevel		= i40evf_get_msglevel,
	.set_msglevel		= i40evf_set_msglevel,
	.get_coalesce		= i40evf_get_coalesce,
	.set_coalesce		= i40evf_set_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,
	.get_rxfh_key_size	= i40evf_get_rxfh_key_size,
};

/**
 * 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;
}
Commit	Line	Data
fbb7ddfe GR	1	/*******************************************************************************
	2	*
	3	* Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
00e5ec4b	4	* Copyright(c) 2013 - 2016 Intel Corporation.
fbb7ddfe GR	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
b831607d JB	15	* You should have received a copy of the GNU General Public License along
	16	* with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*
fbb7ddfe GR	18	* The full GNU General Public License is included in this distribution in
	19	* the file called "COPYING".
	20	*
	21	* Contact Information:
	22	* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
	23	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	24	*
	25	******************************************************************************/
	26
	27	/* ethtool support for i40evf */
	28	#include "i40evf.h"
	29
	30	#include <linux/uaccess.h>
	31
fbb7ddfe GR	32	struct i40evf_stats {
	33	char stat_string[ETH_GSTRING_LEN];
	34	int stat_offset;
	35	};
	36
	37	#define I40EVF_STAT(_name, _stat) { \
	38	.stat_string = _name, \
	39	.stat_offset = offsetof(struct i40evf_adapter, _stat) \
	40	}
	41
	42	/* All stats are u64, so we don't need to track the size of the field. */
	43	static const struct i40evf_stats i40evf_gstrings_stats[] = {
	44	I40EVF_STAT("rx_bytes", current_stats.rx_bytes),
	45	I40EVF_STAT("rx_unicast", current_stats.rx_unicast),
	46	I40EVF_STAT("rx_multicast", current_stats.rx_multicast),
	47	I40EVF_STAT("rx_broadcast", current_stats.rx_broadcast),
	48	I40EVF_STAT("rx_discards", current_stats.rx_discards),
fbb7ddfe GR	49	I40EVF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
	50	I40EVF_STAT("tx_bytes", current_stats.tx_bytes),
	51	I40EVF_STAT("tx_unicast", current_stats.tx_unicast),
	52	I40EVF_STAT("tx_multicast", current_stats.tx_multicast),
	53	I40EVF_STAT("tx_broadcast", current_stats.tx_broadcast),
	54	I40EVF_STAT("tx_discards", current_stats.tx_discards),
	55	I40EVF_STAT("tx_errors", current_stats.tx_errors),
	56	};
	57
	58	#define I40EVF_GLOBAL_STATS_LEN ARRAY_SIZE(i40evf_gstrings_stats)
c7b8d978	59	#define I40EVF_QUEUE_STATS_LEN(_dev) \
75a64435	60	(((struct i40evf_adapter *)\
cc052927	61	netdev_priv(_dev))->num_active_queues \
c7b8d978 MW	62	* 2 * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
	63	#define I40EVF_STATS_LEN(_dev) \
	64	(I40EVF_GLOBAL_STATS_LEN + I40EVF_QUEUE_STATS_LEN(_dev))
fbb7ddfe GR	65
	66	/**
	67	* i40evf_get_settings - Get Link Speed and Duplex settings
	68	* @netdev: network interface device structure
	69	* @ecmd: ethtool command
	70	*
	71	* Reports speed/duplex settings. Because this is a VF, we don't know what
	72	* kind of link we really have, so we fake it.
	73	**/
	74	static int i40evf_get_settings(struct net_device *netdev,
	75	struct ethtool_cmd *ecmd)
	76	{
fe458e50 MW	77	struct i40evf_adapter *adapter = netdev_priv(netdev);
fe458e50 MW	78
107f3018	79	ecmd->supported = 0;
fbb7ddfe GR	80	ecmd->autoneg = AUTONEG_DISABLE;
	81	ecmd->transceiver = XCVR_DUMMY1;
	82	ecmd->port = PORT_NONE;
fe458e50 MW	83	/* Set speed and duplex */
	84	switch (adapter->link_speed) {
	85	case I40E_LINK_SPEED_40GB:
	86	ethtool_cmd_speed_set(ecmd, SPEED_40000);
	87	break;
	88	case I40E_LINK_SPEED_20GB:
	89	ethtool_cmd_speed_set(ecmd, SPEED_20000);
	90	break;
	91	case I40E_LINK_SPEED_10GB:
	92	ethtool_cmd_speed_set(ecmd, SPEED_10000);
	93	break;
	94	case I40E_LINK_SPEED_1GB:
	95	ethtool_cmd_speed_set(ecmd, SPEED_1000);
	96	break;
	97	case I40E_LINK_SPEED_100MB:
	98	ethtool_cmd_speed_set(ecmd, SPEED_100);
	99	break;
	100	default:
	101	break;
	102	}
	103	ecmd->duplex = DUPLEX_FULL;
fbb7ddfe GR	104
	105	return 0;
	106	}
	107
	108	/**
	109	* i40evf_get_sset_count - Get length of string set
	110	* @netdev: network interface device structure
	111	* @sset: id of string set
	112	*
	113	* Reports size of string table. This driver only supports
	114	* strings for statistics.
	115	**/
	116	static int i40evf_get_sset_count(struct net_device *netdev, int sset)
	117	{
	118	if (sset == ETH_SS_STATS)
c7b8d978	119	return I40EVF_STATS_LEN(netdev);
fbb7ddfe	120	else
c7b8d978	121	return -EINVAL;
fbb7ddfe GR	122	}
	123
	124	/**
	125	* i40evf_get_ethtool_stats - report device statistics
	126	* @netdev: network interface device structure
	127	* @stats: ethtool statistics structure
	128	* @data: pointer to data buffer
	129	*
	130	* All statistics are added to the data buffer as an array of u64.
	131	**/
	132	static void i40evf_get_ethtool_stats(struct net_device *netdev,
	133	struct ethtool_stats stats, u64 data)
	134	{
	135	struct i40evf_adapter *adapter = netdev_priv(netdev);
	136	int i, j;
	137	char *p;
	138
	139	for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
	140	p = (char *)adapter + i40evf_gstrings_stats[i].stat_offset;
	141	data[i] = (u64 )p;
	142	}
cc052927	143	for (j = 0; j < adapter->num_active_queues; j++) {
0dd438d8 MW	144	data[i++] = adapter->tx_rings[j].stats.packets;
0dd438d8 MW	145	data[i++] = adapter->tx_rings[j].stats.bytes;
fbb7ddfe	146	}
cc052927	147	for (j = 0; j < adapter->num_active_queues; j++) {
0dd438d8 MW	148	data[i++] = adapter->rx_rings[j].stats.packets;
0dd438d8 MW	149	data[i++] = adapter->rx_rings[j].stats.bytes;
fbb7ddfe GR	150	}
	151	}
	152
	153	/**
	154	* i40evf_get_strings - Get string set
	155	* @netdev: network interface device structure
	156	* @sset: id of string set
	157	* @data: buffer for string data
	158	*
	159	* Builds stats string table.
	160	**/
	161	static void i40evf_get_strings(struct net_device netdev, u32 sset, u8 data)
	162	{
	163	struct i40evf_adapter *adapter = netdev_priv(netdev);
	164	u8 *p = data;
	165	int i;
	166
	167	if (sset == ETH_SS_STATS) {
	168	for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
	169	memcpy(p, i40evf_gstrings_stats[i].stat_string,
	170	ETH_GSTRING_LEN);
	171	p += ETH_GSTRING_LEN;
	172	}
cc052927	173	for (i = 0; i < adapter->num_active_queues; i++) {
fbb7ddfe GR	174	snprintf(p, ETH_GSTRING_LEN, "tx-%u.packets", i);
	175	p += ETH_GSTRING_LEN;
	176	snprintf(p, ETH_GSTRING_LEN, "tx-%u.bytes", i);
	177	p += ETH_GSTRING_LEN;
	178	}
cc052927	179	for (i = 0; i < adapter->num_active_queues; i++) {
fbb7ddfe GR	180	snprintf(p, ETH_GSTRING_LEN, "rx-%u.packets", i);
	181	p += ETH_GSTRING_LEN;
	182	snprintf(p, ETH_GSTRING_LEN, "rx-%u.bytes", i);
	183	p += ETH_GSTRING_LEN;
	184	}
	185	}
	186	}
	187
	188	/**
	189	* i40evf_get_msglevel - Get debug message level
	190	* @netdev: network interface device structure
	191	*
	192	* Returns current debug message level.
	193	**/
	194	static u32 i40evf_get_msglevel(struct net_device *netdev)
	195	{
	196	struct i40evf_adapter *adapter = netdev_priv(netdev);
75a64435	197
fbb7ddfe GR	198	return adapter->msg_enable;
	199	}
	200
	201	/**
0e888980	202	* i40evf_set_msglevel - Set debug message level
fbb7ddfe GR	203	* @netdev: network interface device structure
	204	* @data: message level
	205	*
	206	* Set current debug message level. Higher values cause the driver to
	207	* be noisier.
	208	**/
	209	static void i40evf_set_msglevel(struct net_device *netdev, u32 data)
	210	{
	211	struct i40evf_adapter *adapter = netdev_priv(netdev);
75a64435	212
0e888980 AS	213	if (I40E_DEBUG_USER & data)
0e888980 AS	214	adapter->hw.debug_mask = data;
fbb7ddfe GR	215	adapter->msg_enable = data;
	216	}
	217
	218	/**
b39c1e2c	219	* i40evf_get_drvinfo - Get driver info
fbb7ddfe GR	220	* @netdev: network interface device structure
	221	* @drvinfo: ethool driver info structure
	222	*
	223	* Returns information about the driver and device for display to the user.
	224	**/
	225	static void i40evf_get_drvinfo(struct net_device *netdev,
	226	struct ethtool_drvinfo *drvinfo)
	227	{
	228	struct i40evf_adapter *adapter = netdev_priv(netdev);
	229
	230	strlcpy(drvinfo->driver, i40evf_driver_name, 32);
	231	strlcpy(drvinfo->version, i40evf_driver_version, 32);
cc470a81	232	strlcpy(drvinfo->fw_version, "N/A", 4);
fbb7ddfe GR	233	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
	234	}
	235
	236	/**
	237	* i40evf_get_ringparam - Get ring parameters
	238	* @netdev: network interface device structure
	239	* @ring: ethtool ringparam structure
	240	*
	241	* Returns current ring parameters. TX and RX rings are reported separately,
	242	* but the number of rings is not reported.
	243	**/
	244	static void i40evf_get_ringparam(struct net_device *netdev,
75a64435	245	struct ethtool_ringparam *ring)
fbb7ddfe GR	246	{
fbb7ddfe GR	247	struct i40evf_adapter *adapter = netdev_priv(netdev);
fbb7ddfe GR	248
	249	ring->rx_max_pending = I40EVF_MAX_RXD;
	250	ring->tx_max_pending = I40EVF_MAX_TXD;
d732a184 MW	251	ring->rx_pending = adapter->rx_desc_count;
d732a184 MW	252	ring->tx_pending = adapter->tx_desc_count;
fbb7ddfe GR	253	}
	254
	255	/**
	256	* i40evf_set_ringparam - Set ring parameters
	257	* @netdev: network interface device structure
	258	* @ring: ethtool ringparam structure
	259	*
	260	* Sets ring parameters. TX and RX rings are controlled separately, but the
	261	* number of rings is not specified, so all rings get the same settings.
	262	**/
	263	static int i40evf_set_ringparam(struct net_device *netdev,
	264	struct ethtool_ringparam *ring)
	265	{
	266	struct i40evf_adapter *adapter = netdev_priv(netdev);
	267	u32 new_rx_count, new_tx_count;
	268
	269	if ((ring->rx_mini_pending) \|\| (ring->rx_jumbo_pending))
	270	return -EINVAL;
	271
	272	new_tx_count = clamp_t(u32, ring->tx_pending,
	273	I40EVF_MIN_TXD,
	274	I40EVF_MAX_TXD);
	275	new_tx_count = ALIGN(new_tx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
	276
	277	new_rx_count = clamp_t(u32, ring->rx_pending,
	278	I40EVF_MIN_RXD,
	279	I40EVF_MAX_RXD);
	280	new_rx_count = ALIGN(new_rx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
	281
	282	/* if nothing to do return success */
d732a184 MW	283	if ((new_tx_count == adapter->tx_desc_count) &&
d732a184 MW	284	(new_rx_count == adapter->rx_desc_count))
fbb7ddfe GR	285	return 0;
fbb7ddfe GR	286
d732a184 MW	287	adapter->tx_desc_count = new_tx_count;
d732a184 MW	288	adapter->rx_desc_count = new_rx_count;
fbb7ddfe	289
67c818a1 MW	290	if (netif_running(netdev)) {
	291	adapter->flags \|= I40EVF_FLAG_RESET_NEEDED;
	292	schedule_work(&adapter->reset_task);
	293	}
d732a184	294
fbb7ddfe GR	295	return 0;
	296	}
	297
	298	/**
	299	* i40evf_get_coalesce - Get interrupt coalescing settings
	300	* @netdev: network interface device structure
	301	* @ec: ethtool coalesce structure
	302	*
	303	* Returns current coalescing settings. This is referred to elsewhere in the
	304	* driver as Interrupt Throttle Rate, as this is how the hardware describes
	305	* this functionality.
	306	**/
	307	static int i40evf_get_coalesce(struct net_device *netdev,
75a64435	308	struct ethtool_coalesce *ec)
fbb7ddfe GR	309	{
	310	struct i40evf_adapter *adapter = netdev_priv(netdev);
	311	struct i40e_vsi *vsi = &adapter->vsi;
	312
	313	ec->tx_max_coalesced_frames = vsi->work_limit;
	314	ec->rx_max_coalesced_frames = vsi->work_limit;
	315
	316	if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
32f5f54a	317	ec->use_adaptive_rx_coalesce = 1;
fbb7ddfe GR	318
fbb7ddfe GR	319	if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
32f5f54a MW	320	ec->use_adaptive_tx_coalesce = 1;
	321
	322	ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC;
	323	ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC;
fbb7ddfe GR	324
	325	return 0;
	326	}
	327
	328	/**
	329	* i40evf_set_coalesce - Set interrupt coalescing settings
	330	* @netdev: network interface device structure
	331	* @ec: ethtool coalesce structure
	332	*
	333	* Change current coalescing settings.
	334	**/
	335	static int i40evf_set_coalesce(struct net_device *netdev,
75a64435	336	struct ethtool_coalesce *ec)
fbb7ddfe GR	337	{
	338	struct i40evf_adapter *adapter = netdev_priv(netdev);
	339	struct i40e_hw *hw = &adapter->hw;
	340	struct i40e_vsi *vsi = &adapter->vsi;
	341	struct i40e_q_vector *q_vector;
	342	int i;
	343
32f5f54a MW	344	if (ec->tx_max_coalesced_frames_irq \|\| ec->rx_max_coalesced_frames_irq)
	345	vsi->work_limit = ec->tx_max_coalesced_frames_irq;
	346
	347	if ((ec->rx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
	348	(ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
fbb7ddfe	349	vsi->rx_itr_setting = ec->rx_coalesce_usecs;
fbb7ddfe	350
32f5f54a MW	351	else
	352	return -EINVAL;
	353
	354	if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
	355	(ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
fbb7ddfe	356	vsi->tx_itr_setting = ec->tx_coalesce_usecs;
32f5f54a MW	357	else if (ec->use_adaptive_tx_coalesce)
	358	vsi->tx_itr_setting = (I40E_ITR_DYNAMIC \|
	359	ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
	360	else
	361	return -EINVAL;
	362
	363	if (ec->use_adaptive_rx_coalesce)
	364	vsi->rx_itr_setting \|= I40E_ITR_DYNAMIC;
	365	else
	366	vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
	367
	368	if (ec->use_adaptive_tx_coalesce)
	369	vsi->tx_itr_setting \|= I40E_ITR_DYNAMIC;
	370	else
	371	vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
fbb7ddfe GR	372
fbb7ddfe GR	373	for (i = 0; i < adapter->num_msix_vectors - NONQ_VECS; i++) {
7d96ba1a	374	q_vector = &adapter->q_vectors[i];
fbb7ddfe GR	375	q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
	376	wr32(hw, I40E_VFINT_ITRN1(0, i), q_vector->rx.itr);
	377	q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
	378	wr32(hw, I40E_VFINT_ITRN1(1, i), q_vector->tx.itr);
	379	i40e_flush(hw);
	380	}
	381
	382	return 0;
	383	}
	384
4e9dc31f MW	385	/**
	386	* i40evf_get_rxnfc - command to get RX flow classification rules
	387	* @netdev: network interface device structure
	388	* @cmd: ethtool rxnfc command
	389	*
	390	* Returns Success if the command is supported.
	391	**/
	392	static int i40evf_get_rxnfc(struct net_device *netdev,
	393	struct ethtool_rxnfc *cmd,
	394	u32 *rule_locs)
	395	{
	396	struct i40evf_adapter *adapter = netdev_priv(netdev);
	397	int ret = -EOPNOTSUPP;
	398
	399	switch (cmd->cmd) {
	400	case ETHTOOL_GRXRINGS:
cc052927	401	cmd->data = adapter->num_active_queues;
4e9dc31f MW	402	ret = 0;
	403	break;
	404	case ETHTOOL_GRXFH:
b29699b3 CW	405	netdev_info(netdev,
b29699b3 CW	406	"RSS hash info is not available to vf, use pf.\n");
4e9dc31f MW	407	break;
	408	default:
	409	break;
	410	}
	411
	412	return ret;
	413	}
4e9dc31f MW	414	/**
	415	* i40evf_get_channels: get the number of channels supported by the device
	416	* @netdev: network interface device structure
	417	* @ch: channel information structure
	418	*
	419	* For the purposes of our device, we only use combined channels, i.e. a tx/rx
	420	* queue pair. Report one extra channel to match our "other" MSI-X vector.
	421	**/
	422	static void i40evf_get_channels(struct net_device *netdev,
	423	struct ethtool_channels *ch)
	424	{
	425	struct i40evf_adapter *adapter = netdev_priv(netdev);
	426
	427	/* Report maximum channels */
cc052927	428	ch->max_combined = adapter->num_active_queues;
4e9dc31f MW	429
	430	ch->max_other = NONQ_VECS;
	431	ch->other_count = NONQ_VECS;
	432
cc052927	433	ch->combined_count = adapter->num_active_queues;
4e9dc31f MW	434	}
4e9dc31f MW	435
43a3d9ba MW	436	/**
	437	* i40evf_get_rxfh_key_size - get the RSS hash key size
	438	* @netdev: network interface device structure
	439	*
	440	* Returns the table size.
	441	**/
	442	static u32 i40evf_get_rxfh_key_size(struct net_device *netdev)
	443	{
	444	struct i40evf_adapter *adapter = netdev_priv(netdev);
	445
	446	return adapter->rss_key_size;
	447	}
	448
4e9dc31f MW	449	/**
	450	* i40evf_get_rxfh_indir_size - get the rx flow hash indirection table size
	451	* @netdev: network interface device structure
	452	*
	453	* Returns the table size.
	454	**/
	455	static u32 i40evf_get_rxfh_indir_size(struct net_device *netdev)
	456	{
43a3d9ba MW	457	struct i40evf_adapter *adapter = netdev_priv(netdev);
	458
	459	return adapter->rss_lut_size;
4e9dc31f MW	460	}
	461
	462	/**
fe62d001	463	* i40evf_get_rxfh - get the rx flow hash indirection table
4e9dc31f MW	464	* @netdev: network interface device structure
4e9dc31f MW	465	* @indir: indirection table
2cda3f3b	466	* @key: hash key
4e9dc31f MW	467	*
	468	* Reads the indirection table directly from the hardware. Always returns 0.
	469	**/
892311f6 EP	470	static int i40evf_get_rxfh(struct net_device netdev, u32 indir, u8 *key,
892311f6 EP	471	u8 *hfunc)
4e9dc31f MW	472	{
4e9dc31f MW	473	struct i40evf_adapter *adapter = netdev_priv(netdev);
90b02b43	474	u16 i;
4e9dc31f	475
892311f6 EP	476	if (hfunc)
	477	*hfunc = ETH_RSS_HASH_TOP;
	478	if (!indir)
	479	return 0;
	480
43a3d9ba	481	memcpy(key, adapter->rss_key, adapter->rss_key_size);
90b02b43 HZ	482
90b02b43 HZ	483	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
43a3d9ba MW	484	for (i = 0; i < adapter->rss_lut_size; i++)
43a3d9ba MW	485	indir[i] = (u32)adapter->rss_lut[i];
90b02b43	486
43a3d9ba	487	return 0;
4e9dc31f MW	488	}
	489
	490	/**
fe62d001	491	* i40evf_set_rxfh - set the rx flow hash indirection table
4e9dc31f MW	492	* @netdev: network interface device structure
4e9dc31f MW	493	* @indir: indirection table
2cda3f3b	494	* @key: hash key
4e9dc31f MW	495	*
	496	* Returns -EINVAL if the table specifies an inavlid queue id, otherwise
	497	* returns 0 after programming the table.
	498	**/
fe62d001	499	static int i40evf_set_rxfh(struct net_device netdev, const u32 indir,
892311f6	500	const u8 *key, const u8 hfunc)
4e9dc31f MW	501	{
4e9dc31f MW	502	struct i40evf_adapter *adapter = netdev_priv(netdev);
2c86ac3c	503	u16 i;
4e9dc31f	504
892311f6 EP	505	/* We do not allow change in unsupported parameters */
	506	if (key \|\|
	507	(hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
	508	return -EOPNOTSUPP;
	509	if (!indir)
	510	return 0;
	511
2c86ac3c	512	if (key) {
43a3d9ba	513	memcpy(adapter->rss_key, key, adapter->rss_key_size);
4e9dc31f MW	514	}
4e9dc31f MW	515
2c86ac3c	516	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
43a3d9ba MW	517	for (i = 0; i < adapter->rss_lut_size; i++)
43a3d9ba MW	518	adapter->rss_lut[i] = (u8)(indir[i]);
2c86ac3c	519
43a3d9ba	520	return i40evf_config_rss(adapter);
4e9dc31f MW	521	}
4e9dc31f MW	522
f0c53c76	523	static const struct ethtool_ops i40evf_ethtool_ops = {
fbb7ddfe GR	524	.get_settings = i40evf_get_settings,
	525	.get_drvinfo = i40evf_get_drvinfo,
	526	.get_link = ethtool_op_get_link,
	527	.get_ringparam = i40evf_get_ringparam,
	528	.set_ringparam = i40evf_set_ringparam,
	529	.get_strings = i40evf_get_strings,
	530	.get_ethtool_stats = i40evf_get_ethtool_stats,
	531	.get_sset_count = i40evf_get_sset_count,
	532	.get_msglevel = i40evf_get_msglevel,
	533	.set_msglevel = i40evf_set_msglevel,
	534	.get_coalesce = i40evf_get_coalesce,
	535	.set_coalesce = i40evf_set_coalesce,
4e9dc31f	536	.get_rxnfc = i40evf_get_rxnfc,
4e9dc31f	537	.get_rxfh_indir_size = i40evf_get_rxfh_indir_size,
fe62d001 BH	538	.get_rxfh = i40evf_get_rxfh,
fe62d001 BH	539	.set_rxfh = i40evf_set_rxfh,
4e9dc31f	540	.get_channels = i40evf_get_channels,
43a3d9ba	541	.get_rxfh_key_size = i40evf_get_rxfh_key_size,
fbb7ddfe GR	542	};
	543
	544	/**
	545	* i40evf_set_ethtool_ops - Initialize ethtool ops struct
	546	* @netdev: network interface device structure
	547	*
	548	* Sets ethtool ops struct in our netdev so that ethtool can call
	549	* our functions.
	550	**/
	551	void i40evf_set_ethtool_ops(struct net_device *netdev)
	552	{
7ad24ea4	553	netdev->ethtool_ops = &i40evf_ethtool_ops;
fbb7ddfe	554	}