drivers/net/ethernet/cisco/enic/enic_ethtool.c - linux - Git at Google

 /**
  * Copyright 2013 Cisco Systems, Inc.  All rights reserved.
  *
  * This program is free software; you may redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
  */

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

 #include "enic_res.h"
 #include "enic.h"
 #include "enic_dev.h"
 #include "enic_clsf.h"
 #include "vnic_rss.h"
 #include "vnic_stats.h"

 struct enic_stat {
 	char name[ETH_GSTRING_LEN];
 	unsigned int index;
 };

 #define ENIC_TX_STAT(stat) { \
 	.name = #stat, \
 	.index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
 }

 #define ENIC_RX_STAT(stat) { \
 	.name = #stat, \
 	.index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
 }

 #define ENIC_GEN_STAT(stat) { \
 	.name = #stat, \
 	.index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
 }

 static const struct enic_stat enic_tx_stats[] = {
 	ENIC_TX_STAT(tx_frames_ok),
 	ENIC_TX_STAT(tx_unicast_frames_ok),
 	ENIC_TX_STAT(tx_multicast_frames_ok),
 	ENIC_TX_STAT(tx_broadcast_frames_ok),
 	ENIC_TX_STAT(tx_bytes_ok),
 	ENIC_TX_STAT(tx_unicast_bytes_ok),
 	ENIC_TX_STAT(tx_multicast_bytes_ok),
 	ENIC_TX_STAT(tx_broadcast_bytes_ok),
 	ENIC_TX_STAT(tx_drops),
 	ENIC_TX_STAT(tx_errors),
 	ENIC_TX_STAT(tx_tso),
 };

 static const struct enic_stat enic_rx_stats[] = {
 	ENIC_RX_STAT(rx_frames_ok),
 	ENIC_RX_STAT(rx_frames_total),
 	ENIC_RX_STAT(rx_unicast_frames_ok),
 	ENIC_RX_STAT(rx_multicast_frames_ok),
 	ENIC_RX_STAT(rx_broadcast_frames_ok),
 	ENIC_RX_STAT(rx_bytes_ok),
 	ENIC_RX_STAT(rx_unicast_bytes_ok),
 	ENIC_RX_STAT(rx_multicast_bytes_ok),
 	ENIC_RX_STAT(rx_broadcast_bytes_ok),
 	ENIC_RX_STAT(rx_drop),
 	ENIC_RX_STAT(rx_no_bufs),
 	ENIC_RX_STAT(rx_errors),
 	ENIC_RX_STAT(rx_rss),
 	ENIC_RX_STAT(rx_crc_errors),
 	ENIC_RX_STAT(rx_frames_64),
 	ENIC_RX_STAT(rx_frames_127),
 	ENIC_RX_STAT(rx_frames_255),
 	ENIC_RX_STAT(rx_frames_511),
 	ENIC_RX_STAT(rx_frames_1023),
 	ENIC_RX_STAT(rx_frames_1518),
 	ENIC_RX_STAT(rx_frames_to_max),
 };

 static const struct enic_stat enic_gen_stats[] = {
 	ENIC_GEN_STAT(dma_map_error),
 };

 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
 static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);

 static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
 {
 	int i;
 	int intr;

 	for (i = 0; i < enic->rq_count; i++) {
 		intr = enic_msix_rq_intr(enic, i);
 		vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
 	}
 }

 static int enic_get_settings(struct net_device *netdev,
 	struct ethtool_cmd *ecmd)
 {
 	struct enic *enic = netdev_priv(netdev);

 	ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
 	ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
 	ecmd->port = PORT_FIBRE;
 	ecmd->transceiver = XCVR_EXTERNAL;

 	if (netif_carrier_ok(netdev)) {
 		ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
 		ecmd->duplex = DUPLEX_FULL;
 	} else {
 		ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 		ecmd->duplex = DUPLEX_UNKNOWN;
 	}

 	ecmd->autoneg = AUTONEG_DISABLE;

 	return 0;
 }

 static void enic_get_drvinfo(struct net_device *netdev,
 	struct ethtool_drvinfo *drvinfo)
 {
 	struct enic *enic = netdev_priv(netdev);
 	struct vnic_devcmd_fw_info *fw_info;

 	enic_dev_fw_info(enic, &fw_info);

 	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 	strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 	strlcpy(drvinfo->fw_version, fw_info->fw_version,
 		sizeof(drvinfo->fw_version));
 	strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
 		sizeof(drvinfo->bus_info));
 }

 static void enic_get_strings(struct net_device *netdev, u32 stringset,
 	u8 *data)
 {
 	unsigned int i;

 	switch (stringset) {
 	case ETH_SS_STATS:
 		for (i = 0; i < enic_n_tx_stats; i++) {
 			memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
 		for (i = 0; i < enic_n_rx_stats; i++) {
 			memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
 		for (i = 0; i < enic_n_gen_stats; i++) {
 			memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
 		break;
 	}
 }

 static int enic_get_sset_count(struct net_device *netdev, int sset)
 {
 	switch (sset) {
 	case ETH_SS_STATS:
 		return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
 	default:
 		return -EOPNOTSUPP;
 	}
 }

 static void enic_get_ethtool_stats(struct net_device *netdev,
 	struct ethtool_stats *stats, u64 *data)
 {
 	struct enic *enic = netdev_priv(netdev);
 	struct vnic_stats *vstats;
 	unsigned int i;

 	enic_dev_stats_dump(enic, &vstats);

 	for (i = 0; i < enic_n_tx_stats; i++)
 		*(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
 	for (i = 0; i < enic_n_rx_stats; i++)
 		*(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
 	for (i = 0; i < enic_n_gen_stats; i++)
 		*(data++) = ((u64 *)&enic->gen_stats)[enic_gen_stats[i].index];
 }

 static u32 enic_get_msglevel(struct net_device *netdev)
 {
 	struct enic *enic = netdev_priv(netdev);
 	return enic->msg_enable;
 }

 static void enic_set_msglevel(struct net_device *netdev, u32 value)
 {
 	struct enic *enic = netdev_priv(netdev);
 	enic->msg_enable = value;
 }

 static int enic_get_coalesce(struct net_device *netdev,
 	struct ethtool_coalesce *ecmd)
 {
 	struct enic *enic = netdev_priv(netdev);
 	struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;

 	ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
 	ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
 	if (rxcoal->use_adaptive_rx_coalesce)
 		ecmd->use_adaptive_rx_coalesce = 1;
 	ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
 	ecmd->rx_coalesce_usecs_high = rxcoal->range_end;

 	return 0;
 }

 static int enic_set_coalesce(struct net_device *netdev,
 	struct ethtool_coalesce *ecmd)
 {
 	struct enic *enic = netdev_priv(netdev);
 	u32 tx_coalesce_usecs;
 	u32 rx_coalesce_usecs;
 	u32 rx_coalesce_usecs_low;
 	u32 rx_coalesce_usecs_high;
 	u32 coalesce_usecs_max;
 	unsigned int i, intr;
 	struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;

 	coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
 	tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
 				  coalesce_usecs_max);
 	rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
 				  coalesce_usecs_max);

 	rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
 				      coalesce_usecs_max);
 	rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
 				       coalesce_usecs_max);

 	switch (vnic_dev_get_intr_mode(enic->vdev)) {
 	case VNIC_DEV_INTR_MODE_INTX:
 		if (tx_coalesce_usecs != rx_coalesce_usecs)
 			return -EINVAL;
 		if (ecmd->use_adaptive_rx_coalesce	||
 		    ecmd->rx_coalesce_usecs_low		||
 		    ecmd->rx_coalesce_usecs_high)
 			return -EINVAL;

 		intr = enic_legacy_io_intr();
 		vnic_intr_coalescing_timer_set(&enic->intr[intr],
 			tx_coalesce_usecs);
 		break;
 	case VNIC_DEV_INTR_MODE_MSI:
 		if (tx_coalesce_usecs != rx_coalesce_usecs)
 			return -EINVAL;
 		if (ecmd->use_adaptive_rx_coalesce	||
 		    ecmd->rx_coalesce_usecs_low		||
 		    ecmd->rx_coalesce_usecs_high)
 			return -EINVAL;

 		vnic_intr_coalescing_timer_set(&enic->intr[0],
 			tx_coalesce_usecs);
 		break;
 	case VNIC_DEV_INTR_MODE_MSIX:
 		if (ecmd->rx_coalesce_usecs_high &&
 		    (rx_coalesce_usecs_high <
 		     rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
 				return -EINVAL;

 		for (i = 0; i < enic->wq_count; i++) {
 			intr = enic_msix_wq_intr(enic, i);
 			vnic_intr_coalescing_timer_set(&enic->intr[intr],
 				tx_coalesce_usecs);
 		}

 		rxcoal->use_adaptive_rx_coalesce =
 					!!ecmd->use_adaptive_rx_coalesce;
 		if (!rxcoal->use_adaptive_rx_coalesce)
 			enic_intr_coal_set_rx(enic, rx_coalesce_usecs);

 		if (ecmd->rx_coalesce_usecs_high) {
 			rxcoal->range_end = rx_coalesce_usecs_high;
 			rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
 			rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
 							ENIC_AIC_LARGE_PKT_DIFF;
 		}
 		break;
 	default:
 		break;
 	}

 	enic->tx_coalesce_usecs = tx_coalesce_usecs;
 	enic->rx_coalesce_usecs = rx_coalesce_usecs;

 	return 0;
 }

 static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
 			    u32 *rule_locs)
 {
 	int j, ret = 0, cnt = 0;

 	cmd->data = enic->rfs_h.max - enic->rfs_h.free;
 	for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
 		struct hlist_head *hhead;
 		struct hlist_node *tmp;
 		struct enic_rfs_fltr_node *n;

 		hhead = &enic->rfs_h.ht_head[j];
 		hlist_for_each_entry_safe(n, tmp, hhead, node) {
 			if (cnt == cmd->rule_cnt)
 				return -EMSGSIZE;
 			rule_locs[cnt] = n->fltr_id;
 			cnt++;
 		}
 	}
 	cmd->rule_cnt = cnt;

 	return ret;
 }

 static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
 {
 	struct ethtool_rx_flow_spec *fsp =
 				(struct ethtool_rx_flow_spec *)&cmd->fs;
 	struct enic_rfs_fltr_node *n;

 	n = htbl_fltr_search(enic, (u16)fsp->location);
 	if (!n)
 		return -EINVAL;
 	switch (n->keys.ip_proto) {
 	case IPPROTO_TCP:
 		fsp->flow_type = TCP_V4_FLOW;
 		break;
 	case IPPROTO_UDP:
 		fsp->flow_type = UDP_V4_FLOW;
 		break;
 	default:
 		return -EINVAL;
 		break;
 	}

 	fsp->h_u.tcp_ip4_spec.ip4src = n->keys.src;
 	fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;

 	fsp->h_u.tcp_ip4_spec.ip4dst = n->keys.dst;
 	fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;

 	fsp->h_u.tcp_ip4_spec.psrc = n->keys.port16[0];
 	fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;

 	fsp->h_u.tcp_ip4_spec.pdst = n->keys.port16[1];
 	fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;

 	fsp->ring_cookie = n->rq_id;

 	return 0;
 }

 static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 			  u32 *rule_locs)
 {
 	struct enic *enic = netdev_priv(dev);
 	int ret = 0;

 	switch (cmd->cmd) {
 	case ETHTOOL_GRXRINGS:
 		cmd->data = enic->rq_count;
 		break;
 	case ETHTOOL_GRXCLSRLCNT:
 		spin_lock_bh(&enic->rfs_h.lock);
 		cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
 		cmd->data = enic->rfs_h.max;
 		spin_unlock_bh(&enic->rfs_h.lock);
 		break;
 	case ETHTOOL_GRXCLSRLALL:
 		spin_lock_bh(&enic->rfs_h.lock);
 		ret = enic_grxclsrlall(enic, cmd, rule_locs);
 		spin_unlock_bh(&enic->rfs_h.lock);
 		break;
 	case ETHTOOL_GRXCLSRULE:
 		spin_lock_bh(&enic->rfs_h.lock);
 		ret = enic_grxclsrule(enic, cmd);
 		spin_unlock_bh(&enic->rfs_h.lock);
 		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;
 	}

 	return ret;
 }

 static int enic_get_tunable(struct net_device *dev,
 			    const struct ethtool_tunable *tuna, void *data)
 {
 	struct enic *enic = netdev_priv(dev);
 	int ret = 0;

 	switch (tuna->id) {
 	case ETHTOOL_RX_COPYBREAK:
 		*(u32 *)data = enic->rx_copybreak;
 		break;
 	default:
 		ret = -EINVAL;
 		break;
 	}

 	return ret;
 }

 static int enic_set_tunable(struct net_device *dev,
 			    const struct ethtool_tunable *tuna,
 			    const void *data)
 {
 	struct enic *enic = netdev_priv(dev);
 	int ret = 0;

 	switch (tuna->id) {
 	case ETHTOOL_RX_COPYBREAK:
 		enic->rx_copybreak = *(u32 *)data;
 		break;
 	default:
 		ret = -EINVAL;
 		break;
 	}

 	return ret;
 }

 static u32 enic_get_rxfh_key_size(struct net_device *netdev)
 {
 	return ENIC_RSS_LEN;
 }

 static int enic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
 			 u8 *hfunc)
 {
 	struct enic *enic = netdev_priv(netdev);

 	if (hkey)
 		memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);

 	if (hfunc)
 		*hfunc = ETH_RSS_HASH_TOP;

 	return 0;
 }

 static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
 			 const u8 *hkey, const u8 hfunc)
 {
 	struct enic *enic = netdev_priv(netdev);

 	if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) ||
 	    indir)
 		return -EINVAL;

 	if (hkey)
 		memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);

 	return __enic_set_rsskey(enic);
 }

 static const struct ethtool_ops enic_ethtool_ops = {
 	.get_settings = enic_get_settings,
 	.get_drvinfo = enic_get_drvinfo,
 	.get_msglevel = enic_get_msglevel,
 	.set_msglevel = enic_set_msglevel,
 	.get_link = ethtool_op_get_link,
 	.get_strings = enic_get_strings,
 	.get_sset_count = enic_get_sset_count,
 	.get_ethtool_stats = enic_get_ethtool_stats,
 	.get_coalesce = enic_get_coalesce,
 	.set_coalesce = enic_set_coalesce,
 	.get_rxnfc = enic_get_rxnfc,
 	.get_tunable = enic_get_tunable,
 	.set_tunable = enic_set_tunable,
 	.get_rxfh_key_size = enic_get_rxfh_key_size,
 	.get_rxfh = enic_get_rxfh,
 	.set_rxfh = enic_set_rxfh,
 };

 void enic_set_ethtool_ops(struct net_device *netdev)
 {
 	netdev->ethtool_ops = &enic_ethtool_ops;
 }
	/**
	* Copyright 2013 Cisco Systems, Inc. All rights reserved.
	*
	* This program is free software; you may redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; version 2 of the License.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*
	*/

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

	#include "enic_res.h"
	#include "enic.h"
	#include "enic_dev.h"
	#include "enic_clsf.h"
	#include "vnic_rss.h"
	#include "vnic_stats.h"

	struct enic_stat {
	char name[ETH_GSTRING_LEN];
	unsigned int index;
	};

	#define ENIC_TX_STAT(stat) { \
	.name = #stat, \
	.index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
	}

	#define ENIC_RX_STAT(stat) { \
	.name = #stat, \
	.index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
	}

	#define ENIC_GEN_STAT(stat) { \
	.name = #stat, \
	.index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
	}

	static const struct enic_stat enic_tx_stats[] = {
	ENIC_TX_STAT(tx_frames_ok),
	ENIC_TX_STAT(tx_unicast_frames_ok),
	ENIC_TX_STAT(tx_multicast_frames_ok),
	ENIC_TX_STAT(tx_broadcast_frames_ok),
	ENIC_TX_STAT(tx_bytes_ok),
	ENIC_TX_STAT(tx_unicast_bytes_ok),
	ENIC_TX_STAT(tx_multicast_bytes_ok),
	ENIC_TX_STAT(tx_broadcast_bytes_ok),
	ENIC_TX_STAT(tx_drops),
	ENIC_TX_STAT(tx_errors),
	ENIC_TX_STAT(tx_tso),
	};

	static const struct enic_stat enic_rx_stats[] = {
	ENIC_RX_STAT(rx_frames_ok),
	ENIC_RX_STAT(rx_frames_total),
	ENIC_RX_STAT(rx_unicast_frames_ok),
	ENIC_RX_STAT(rx_multicast_frames_ok),
	ENIC_RX_STAT(rx_broadcast_frames_ok),
	ENIC_RX_STAT(rx_bytes_ok),
	ENIC_RX_STAT(rx_unicast_bytes_ok),
	ENIC_RX_STAT(rx_multicast_bytes_ok),
	ENIC_RX_STAT(rx_broadcast_bytes_ok),
	ENIC_RX_STAT(rx_drop),
	ENIC_RX_STAT(rx_no_bufs),
	ENIC_RX_STAT(rx_errors),
	ENIC_RX_STAT(rx_rss),
	ENIC_RX_STAT(rx_crc_errors),
	ENIC_RX_STAT(rx_frames_64),
	ENIC_RX_STAT(rx_frames_127),
	ENIC_RX_STAT(rx_frames_255),
	ENIC_RX_STAT(rx_frames_511),
	ENIC_RX_STAT(rx_frames_1023),
	ENIC_RX_STAT(rx_frames_1518),
	ENIC_RX_STAT(rx_frames_to_max),
	};

	static const struct enic_stat enic_gen_stats[] = {
	ENIC_GEN_STAT(dma_map_error),
	};

	static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
	static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
	static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);

	static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
	{
	int i;
	int intr;

	for (i = 0; i < enic->rq_count; i++) {
	intr = enic_msix_rq_intr(enic, i);
	vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
	}
	}

	static int enic_get_settings(struct net_device *netdev,
	struct ethtool_cmd *ecmd)
	{
	struct enic *enic = netdev_priv(netdev);

	ecmd->supported = (SUPPORTED_10000baseT_Full \| SUPPORTED_FIBRE);
	ecmd->advertising = (ADVERTISED_10000baseT_Full \| ADVERTISED_FIBRE);
	ecmd->port = PORT_FIBRE;
	ecmd->transceiver = XCVR_EXTERNAL;

	if (netif_carrier_ok(netdev)) {
	ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
	ecmd->duplex = DUPLEX_FULL;
	} else {
	ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
	ecmd->duplex = DUPLEX_UNKNOWN;
	}

	ecmd->autoneg = AUTONEG_DISABLE;

	return 0;
	}

	static void enic_get_drvinfo(struct net_device *netdev,
	struct ethtool_drvinfo *drvinfo)
	{
	struct enic *enic = netdev_priv(netdev);
	struct vnic_devcmd_fw_info *fw_info;

	enic_dev_fw_info(enic, &fw_info);

	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
	strlcpy(drvinfo->fw_version, fw_info->fw_version,
	sizeof(drvinfo->fw_version));
	strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
	sizeof(drvinfo->bus_info));
	}

	static void enic_get_strings(struct net_device *netdev, u32 stringset,
	u8 *data)
	{
	unsigned int i;

	switch (stringset) {
	case ETH_SS_STATS:
	for (i = 0; i < enic_n_tx_stats; i++) {
	memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
	data += ETH_GSTRING_LEN;
	}
	for (i = 0; i < enic_n_rx_stats; i++) {
	memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
	data += ETH_GSTRING_LEN;
	}
	for (i = 0; i < enic_n_gen_stats; i++) {
	memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
	data += ETH_GSTRING_LEN;
	}
	break;
	}
	}

	static int enic_get_sset_count(struct net_device *netdev, int sset)
	{
	switch (sset) {
	case ETH_SS_STATS:
	return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
	default:
	return -EOPNOTSUPP;
	}
	}

	static void enic_get_ethtool_stats(struct net_device *netdev,
	struct ethtool_stats stats, u64 data)
	{
	struct enic *enic = netdev_priv(netdev);
	struct vnic_stats *vstats;
	unsigned int i;

	enic_dev_stats_dump(enic, &vstats);

	for (i = 0; i < enic_n_tx_stats; i++)
	(data++) = ((u64 )&vstats->tx)[enic_tx_stats[i].index];
	for (i = 0; i < enic_n_rx_stats; i++)
	(data++) = ((u64 )&vstats->rx)[enic_rx_stats[i].index];
	for (i = 0; i < enic_n_gen_stats; i++)
	(data++) = ((u64 )&enic->gen_stats)[enic_gen_stats[i].index];
	}

	static u32 enic_get_msglevel(struct net_device *netdev)
	{
	struct enic *enic = netdev_priv(netdev);
	return enic->msg_enable;
	}

	static void enic_set_msglevel(struct net_device *netdev, u32 value)
	{
	struct enic *enic = netdev_priv(netdev);
	enic->msg_enable = value;
	}

	static int enic_get_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *ecmd)
	{
	struct enic *enic = netdev_priv(netdev);
	struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;

	ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
	ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
	if (rxcoal->use_adaptive_rx_coalesce)
	ecmd->use_adaptive_rx_coalesce = 1;
	ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
	ecmd->rx_coalesce_usecs_high = rxcoal->range_end;

	return 0;
	}

	static int enic_set_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *ecmd)
	{
	struct enic *enic = netdev_priv(netdev);
	u32 tx_coalesce_usecs;
	u32 rx_coalesce_usecs;
	u32 rx_coalesce_usecs_low;
	u32 rx_coalesce_usecs_high;
	u32 coalesce_usecs_max;
	unsigned int i, intr;
	struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;

	coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
	tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
	coalesce_usecs_max);
	rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
	coalesce_usecs_max);

	rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
	coalesce_usecs_max);
	rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
	coalesce_usecs_max);

	switch (vnic_dev_get_intr_mode(enic->vdev)) {
	case VNIC_DEV_INTR_MODE_INTX:
	if (tx_coalesce_usecs != rx_coalesce_usecs)
	return -EINVAL;
	if (ecmd->use_adaptive_rx_coalesce \|\|
	ecmd->rx_coalesce_usecs_low \|\|
	ecmd->rx_coalesce_usecs_high)
	return -EINVAL;

	intr = enic_legacy_io_intr();
	vnic_intr_coalescing_timer_set(&enic->intr[intr],
	tx_coalesce_usecs);
	break;
	case VNIC_DEV_INTR_MODE_MSI:
	if (tx_coalesce_usecs != rx_coalesce_usecs)
	return -EINVAL;
	if (ecmd->use_adaptive_rx_coalesce \|\|
	ecmd->rx_coalesce_usecs_low \|\|
	ecmd->rx_coalesce_usecs_high)
	return -EINVAL;

	vnic_intr_coalescing_timer_set(&enic->intr[0],
	tx_coalesce_usecs);
	break;
	case VNIC_DEV_INTR_MODE_MSIX:
	if (ecmd->rx_coalesce_usecs_high &&
	(rx_coalesce_usecs_high <
	rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
	return -EINVAL;

	for (i = 0; i < enic->wq_count; i++) {
	intr = enic_msix_wq_intr(enic, i);
	vnic_intr_coalescing_timer_set(&enic->intr[intr],
	tx_coalesce_usecs);
	}

	rxcoal->use_adaptive_rx_coalesce =
	!!ecmd->use_adaptive_rx_coalesce;
	if (!rxcoal->use_adaptive_rx_coalesce)
	enic_intr_coal_set_rx(enic, rx_coalesce_usecs);

	if (ecmd->rx_coalesce_usecs_high) {
	rxcoal->range_end = rx_coalesce_usecs_high;
	rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
	rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
	ENIC_AIC_LARGE_PKT_DIFF;
	}
	break;
	default:
	break;
	}

	enic->tx_coalesce_usecs = tx_coalesce_usecs;
	enic->rx_coalesce_usecs = rx_coalesce_usecs;

	return 0;
	}

	static int enic_grxclsrlall(struct enic enic, struct ethtool_rxnfc cmd,
	u32 *rule_locs)
	{
	int j, ret = 0, cnt = 0;

	cmd->data = enic->rfs_h.max - enic->rfs_h.free;
	for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
	struct hlist_head *hhead;
	struct hlist_node *tmp;
	struct enic_rfs_fltr_node *n;

	hhead = &enic->rfs_h.ht_head[j];
	hlist_for_each_entry_safe(n, tmp, hhead, node) {
	if (cnt == cmd->rule_cnt)
	return -EMSGSIZE;
	rule_locs[cnt] = n->fltr_id;
	cnt++;
	}
	}
	cmd->rule_cnt = cnt;

	return ret;
	}

	static int enic_grxclsrule(struct enic enic, struct ethtool_rxnfc cmd)
	{
	struct ethtool_rx_flow_spec *fsp =
	(struct ethtool_rx_flow_spec *)&cmd->fs;
	struct enic_rfs_fltr_node *n;

	n = htbl_fltr_search(enic, (u16)fsp->location);
	if (!n)
	return -EINVAL;
	switch (n->keys.ip_proto) {
	case IPPROTO_TCP:
	fsp->flow_type = TCP_V4_FLOW;
	break;
	case IPPROTO_UDP:
	fsp->flow_type = UDP_V4_FLOW;
	break;
	default:
	return -EINVAL;
	break;
	}

	fsp->h_u.tcp_ip4_spec.ip4src = n->keys.src;
	fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;

	fsp->h_u.tcp_ip4_spec.ip4dst = n->keys.dst;
	fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;

	fsp->h_u.tcp_ip4_spec.psrc = n->keys.port16[0];
	fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;

	fsp->h_u.tcp_ip4_spec.pdst = n->keys.port16[1];
	fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;

	fsp->ring_cookie = n->rq_id;

	return 0;
	}

	static int enic_get_rxnfc(struct net_device dev, struct ethtool_rxnfc cmd,
	u32 *rule_locs)
	{
	struct enic *enic = netdev_priv(dev);
	int ret = 0;

	switch (cmd->cmd) {
	case ETHTOOL_GRXRINGS:
	cmd->data = enic->rq_count;
	break;
	case ETHTOOL_GRXCLSRLCNT:
	spin_lock_bh(&enic->rfs_h.lock);
	cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
	cmd->data = enic->rfs_h.max;
	spin_unlock_bh(&enic->rfs_h.lock);
	break;
	case ETHTOOL_GRXCLSRLALL:
	spin_lock_bh(&enic->rfs_h.lock);
	ret = enic_grxclsrlall(enic, cmd, rule_locs);
	spin_unlock_bh(&enic->rfs_h.lock);
	break;
	case ETHTOOL_GRXCLSRULE:
	spin_lock_bh(&enic->rfs_h.lock);
	ret = enic_grxclsrule(enic, cmd);
	spin_unlock_bh(&enic->rfs_h.lock);
	break;
	default:
	ret = -EOPNOTSUPP;
	break;
	}

	return ret;
	}

	static int enic_get_tunable(struct net_device *dev,
	const struct ethtool_tunable tuna, void data)
	{
	struct enic *enic = netdev_priv(dev);
	int ret = 0;

	switch (tuna->id) {
	case ETHTOOL_RX_COPYBREAK:
	(u32 )data = enic->rx_copybreak;
	break;
	default:
	ret = -EINVAL;
	break;
	}

	return ret;
	}

	static int enic_set_tunable(struct net_device *dev,
	const struct ethtool_tunable *tuna,
	const void *data)
	{
	struct enic *enic = netdev_priv(dev);
	int ret = 0;

	switch (tuna->id) {
	case ETHTOOL_RX_COPYBREAK:
	enic->rx_copybreak = (u32 )data;
	break;
	default:
	ret = -EINVAL;
	break;
	}

	return ret;
	}

	static u32 enic_get_rxfh_key_size(struct net_device *netdev)
	{
	return ENIC_RSS_LEN;
	}

	static int enic_get_rxfh(struct net_device netdev, u32 indir, u8 *hkey,
	u8 *hfunc)
	{
	struct enic *enic = netdev_priv(netdev);

	if (hkey)
	memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);

	if (hfunc)
	*hfunc = ETH_RSS_HASH_TOP;

	return 0;
	}

	static int enic_set_rxfh(struct net_device netdev, const u32 indir,
	const u8 *hkey, const u8 hfunc)
	{
	struct enic *enic = netdev_priv(netdev);

	if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) \|\|
	indir)
	return -EINVAL;

	if (hkey)
	memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);

	return __enic_set_rsskey(enic);
	}

	static const struct ethtool_ops enic_ethtool_ops = {
	.get_settings = enic_get_settings,
	.get_drvinfo = enic_get_drvinfo,
	.get_msglevel = enic_get_msglevel,
	.set_msglevel = enic_set_msglevel,
	.get_link = ethtool_op_get_link,
	.get_strings = enic_get_strings,
	.get_sset_count = enic_get_sset_count,
	.get_ethtool_stats = enic_get_ethtool_stats,
	.get_coalesce = enic_get_coalesce,
	.set_coalesce = enic_set_coalesce,
	.get_rxnfc = enic_get_rxnfc,
	.get_tunable = enic_get_tunable,
	.set_tunable = enic_set_tunable,
	.get_rxfh_key_size = enic_get_rxfh_key_size,
	.get_rxfh = enic_get_rxfh,
	.set_rxfh = enic_set_rxfh,
	};

	void enic_set_ethtool_ops(struct net_device *netdev)
	{
	netdev->ethtool_ops = &enic_ethtool_ops;
	}