text: /*
   * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   *
   * This software is available to you under a choice of one of two
   * licenses.  You may choose to be licensed under the terms of the GNU
   * General Public License (GPL) Version 2, available from the file
   * COPYING in the main directory of this source tree, or the
   * OpenIB.org BSD license below:
   *
   *     Redistribution and use in source and binary forms, with or
   *     without modification, are permitted provided that the following
   *     conditions are met:
   *
   *      - Redistributions of source code must retain the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer.
   *
   *      - Redistributions in binary form must reproduce the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer in the documentation and/or other materials
   *        provided with the distribution.
   *
   * 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/kernel.h>
  #include <linux/ethtool.h>
  #include <linux/netdevice.h>
  #include <linux/mlx4/driver.h>
  #include <linux/mlx4/device.h>
  #include <linux/in.h>
  #include <net/ip.h>
  #include <linux/bitmap.h>
  
  #include "mlx4_en.h"
  #include "en_port.h"
  
  #define EN_ETHTOOL_QP_ATTACH (1ull << 63)
  #define EN_ETHTOOL_SHORT_MASK cpu_to_be16(0xffff)
  #define EN_ETHTOOL_WORD_MASK  cpu_to_be32(0xffffffff)
  
  static int mlx4_en_moderation_update(struct mlx4_en_priv *priv)
  {
  	int i;
  	int err = 0;
  
  	for (i = 0; i < priv->tx_ring_num; i++) {
  		priv->tx_cq[i]->moder_cnt = priv->tx_frames;
  		priv->tx_cq[i]->moder_time = priv->tx_usecs;
  		if (priv->port_up) {
  			err = mlx4_en_set_cq_moder(priv, priv->tx_cq[i]);
  			if (err)
  				return err;
  		}
  	}
  
  	if (priv->adaptive_rx_coal)
  		return 0;
  
  	for (i = 0; i < priv->rx_ring_num; i++) {
  		priv->rx_cq[i]->moder_cnt = priv->rx_frames;
  		priv->rx_cq[i]->moder_time = priv->rx_usecs;
  		priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
  		if (priv->port_up) {
  			err = mlx4_en_set_cq_moder(priv, priv->rx_cq[i]);
  			if (err)
  				return err;
  		}
  	}
  
  	return err;
  }
  
  static void
  mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  
  	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
  	strlcpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")",
  		sizeof(drvinfo->version));
  	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
  		"%d.%d.%d",
  		(u16) (mdev->dev->caps.fw_ver >> 32),
  		(u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
  		(u16) (mdev->dev->caps.fw_ver & 0xffff));
  	strlcpy(drvinfo->bus_info, pci_name(mdev->dev->persist->pdev),
  		sizeof(drvinfo->bus_info));
  }
  
  static const char mlx4_en_priv_flags[][ETH_GSTRING_LEN] = {
  	"blueflame",
  	"phv-bit"
  };
  
  static const char main_strings[][ETH_GSTRING_LEN] = {
  	/* main statistics */
  	"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
  	"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
  	"rx_length_errors", "rx_over_errors", "rx_crc_errors",
  	"rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
  	"tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
  	"tx_heartbeat_errors", "tx_window_errors",
  
  	/* port statistics */
  	"tso_packets",
  	"xmit_more",
  	"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
  	"rx_csum_good", "rx_csum_none", "rx_csum_complete", "tx_chksum_offload",
  
  	/* pf statistics */
  	"pf_rx_packets",
  	"pf_rx_bytes",
  	"pf_tx_packets",
  	"pf_tx_bytes",
  
  	/* priority flow control statistics rx */
  	"rx_pause_prio_0", "rx_pause_duration_prio_0",
  	"rx_pause_transition_prio_0",
  	"rx_pause_prio_1", "rx_pause_duration_prio_1",
  	"rx_pause_transition_prio_1",
  	"rx_pause_prio_2", "rx_pause_duration_prio_2",
  	"rx_pause_transition_prio_2",
  	"rx_pause_prio_3", "rx_pause_duration_prio_3",
  	"rx_pause_transition_prio_3",
  	"rx_pause_prio_4", "rx_pause_duration_prio_4",
  	"rx_pause_transition_prio_4",
  	"rx_pause_prio_5", "rx_pause_duration_prio_5",
  	"rx_pause_transition_prio_5",
  	"rx_pause_prio_6", "rx_pause_duration_prio_6",
  	"rx_pause_transition_prio_6",
  	"rx_pause_prio_7", "rx_pause_duration_prio_7",
  	"rx_pause_transition_prio_7",
  
  	/* flow control statistics rx */
  	"rx_pause", "rx_pause_duration", "rx_pause_transition",
  
  	/* priority flow control statistics tx */
  	"tx_pause_prio_0", "tx_pause_duration_prio_0",
  	"tx_pause_transition_prio_0",
  	"tx_pause_prio_1", "tx_pause_duration_prio_1",
  	"tx_pause_transition_prio_1",
  	"tx_pause_prio_2", "tx_pause_duration_prio_2",
  	"tx_pause_transition_prio_2",
  	"tx_pause_prio_3", "tx_pause_duration_prio_3",
  	"tx_pause_transition_prio_3",
  	"tx_pause_prio_4", "tx_pause_duration_prio_4",
  	"tx_pause_transition_prio_4",
  	"tx_pause_prio_5", "tx_pause_duration_prio_5",
  	"tx_pause_transition_prio_5",
  	"tx_pause_prio_6", "tx_pause_duration_prio_6",
  	"tx_pause_transition_prio_6",
  	"tx_pause_prio_7", "tx_pause_duration_prio_7",
  	"tx_pause_transition_prio_7",
  
  	/* flow control statistics tx */
  	"tx_pause", "tx_pause_duration", "tx_pause_transition",
  
  	/* packet statistics */
  	"rx_multicast_packets",
  	"rx_broadcast_packets",
  	"rx_jabbers",
  	"rx_in_range_length_error",
  	"rx_out_range_length_error",
  	"tx_multicast_packets",
  	"tx_broadcast_packets",
  	"rx_prio_0_packets", "rx_prio_0_bytes",
  	"rx_prio_1_packets", "rx_prio_1_bytes",
  	"rx_prio_2_packets", "rx_prio_2_bytes",
  	"rx_prio_3_packets", "rx_prio_3_bytes",
  	"rx_prio_4_packets", "rx_prio_4_bytes",
  	"rx_prio_5_packets", "rx_prio_5_bytes",
  	"rx_prio_6_packets", "rx_prio_6_bytes",
  	"rx_prio_7_packets", "rx_prio_7_bytes",
  	"rx_novlan_packets", "rx_novlan_bytes",
  	"tx_prio_0_packets", "tx_prio_0_bytes",
  	"tx_prio_1_packets", "tx_prio_1_bytes",
  	"tx_prio_2_packets", "tx_prio_2_bytes",
  	"tx_prio_3_packets", "tx_prio_3_bytes",
  	"tx_prio_4_packets", "tx_prio_4_bytes",
  	"tx_prio_5_packets", "tx_prio_5_bytes",
  	"tx_prio_6_packets", "tx_prio_6_bytes",
  	"tx_prio_7_packets", "tx_prio_7_bytes",
  	"tx_novlan_packets", "tx_novlan_bytes",
  
  };
  
  static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
  	"Interrupt Test",
  	"Link Test",
  	"Speed Test",
  	"Register Test",
  	"Loopback Test",
  };
  
  static u32 mlx4_en_get_msglevel(struct net_device *dev)
  {
  	return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
  }
  
  static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
  {
  	((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
  }
  
  static void mlx4_en_get_wol(struct net_device *netdev,
  			    struct ethtool_wolinfo *wol)
  {
  	struct mlx4_en_priv *priv = netdev_priv(netdev);
  	int err = 0;
  	u64 config = 0;
  	u64 mask;
  
  	if ((priv->port < 1) || (priv->port > 2)) {
  		en_err(priv, "Failed to get WoL information\n");
  		return;
  	}
  
  	mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
  		MLX4_DEV_CAP_FLAG_WOL_PORT2;
  
  	if (!(priv->mdev->dev->caps.flags & mask)) {
  		wol->supported = 0;
  		wol->wolopts = 0;
  		return;
  	}
  
  	err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
  	if (err) {
  		en_err(priv, "Failed to get WoL information\n");
  		return;
  	}
  
  	if (config & MLX4_EN_WOL_MAGIC)
  		wol->supported = WAKE_MAGIC;
  	else
  		wol->supported = 0;
  
  	if (config & MLX4_EN_WOL_ENABLED)
  		wol->wolopts = WAKE_MAGIC;
  	else
  		wol->wolopts = 0;
  }
  
  static int mlx4_en_set_wol(struct net_device *netdev,
  			    struct ethtool_wolinfo *wol)
  {
  	struct mlx4_en_priv *priv = netdev_priv(netdev);
  	u64 config = 0;
  	int err = 0;
  	u64 mask;
  
  	if ((priv->port < 1) || (priv->port > 2))
  		return -EOPNOTSUPP;
  
  	mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
  		MLX4_DEV_CAP_FLAG_WOL_PORT2;
  
  	if (!(priv->mdev->dev->caps.flags & mask))
  		return -EOPNOTSUPP;
  
  	if (wol->supported & ~WAKE_MAGIC)
  		return -EINVAL;
  
  	err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
  	if (err) {
  		en_err(priv, "Failed to get WoL info, unable to modify\n");
  		return err;
  	}
  
  	if (wol->wolopts & WAKE_MAGIC) {
  		config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
  				MLX4_EN_WOL_MAGIC;
  	} else {
  		config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
  		config |= MLX4_EN_WOL_DO_MODIFY;
  	}
  
  	err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
  	if (err)
  		en_err(priv, "Failed to set WoL information\n");
  
  	return err;
  }
  
  struct bitmap_iterator {
  	unsigned long *stats_bitmap;
  	unsigned int count;
  	unsigned int iterator;
  	bool advance_array; /* if set, force no increments */
  };
  
  static inline void bitmap_iterator_init(struct bitmap_iterator *h,
  					unsigned long *stats_bitmap,
  					int count)
  {
  	h->iterator = 0;
  	h->advance_array = !bitmap_empty(stats_bitmap, count);
  	h->count = h->advance_array ? bitmap_weight(stats_bitmap, count)
  		: count;
  	h->stats_bitmap = stats_bitmap;
  }
  
  static inline int bitmap_iterator_test(struct bitmap_iterator *h)
  {
  	return !h->advance_array ? 1 : test_bit(h->iterator, h->stats_bitmap);
  }
  
  static inline int bitmap_iterator_inc(struct bitmap_iterator *h)
  {
  	return h->iterator++;
  }
  
  static inline unsigned int
  bitmap_iterator_count(struct bitmap_iterator *h)
  {
  	return h->count;
  }
  
  static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct bitmap_iterator it;
  
  	bitmap_iterator_init(&it, priv->stats_bitmap.bitmap, NUM_ALL_STATS);
  
  	switch (sset) {
  	case ETH_SS_STATS:
  		return bitmap_iterator_count(&it) +
  			(priv->tx_ring_num * 2) +
  			(priv->rx_ring_num * 3);
  	case ETH_SS_TEST:
  		return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
  					& MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
  	case ETH_SS_PRIV_FLAGS:
  		return ARRAY_SIZE(mlx4_en_priv_flags);
  	default:
  		return -EOPNOTSUPP;
  	}
  }
  
  static void mlx4_en_get_ethtool_stats(struct net_device *dev,
  		struct ethtool_stats *stats, uint64_t *data)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	int index = 0;
  	int i;
  	struct bitmap_iterator it;
  
  	bitmap_iterator_init(&it, priv->stats_bitmap.bitmap, NUM_ALL_STATS);
  
  	spin_lock_bh(&priv->stats_lock);
  
  	for (i = 0; i < NUM_MAIN_STATS; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] = ((unsigned long *)&dev->stats)[i];
  
  	for (i = 0; i < NUM_PORT_STATS; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] = ((unsigned long *)&priv->port_stats)[i];
  
  	for (i = 0; i < NUM_PF_STATS; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] =
  				((unsigned long *)&priv->pf_stats)[i];
  
  	for (i = 0; i < NUM_FLOW_PRIORITY_STATS_RX;
  	     i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] =
  				((u64 *)&priv->rx_priority_flowstats)[i];
  
  	for (i = 0; i < NUM_FLOW_STATS_RX; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] = ((u64 *)&priv->rx_flowstats)[i];
  
  	for (i = 0; i < NUM_FLOW_PRIORITY_STATS_TX;
  	     i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] =
  				((u64 *)&priv->tx_priority_flowstats)[i];
  
  	for (i = 0; i < NUM_FLOW_STATS_TX; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] = ((u64 *)&priv->tx_flowstats)[i];
  
  	for (i = 0; i < NUM_PKT_STATS; i++, bitmap_iterator_inc(&it))
  		if (bitmap_iterator_test(&it))
  			data[index++] = ((unsigned long *)&priv->pkstats)[i];
  
  	for (i = 0; i < priv->tx_ring_num; i++) {
  		data[index++] = priv->tx_ring[i]->packets;
  		data[index++] = priv->tx_ring[i]->bytes;
  	}
  	for (i = 0; i < priv->rx_ring_num; i++) {
  		data[index++] = priv->rx_ring[i]->packets;
  		data[index++] = priv->rx_ring[i]->bytes;
  		data[index++] = priv->rx_ring[i]->dropped;
  	}
  	spin_unlock_bh(&priv->stats_lock);
  
  }
  
  static void mlx4_en_self_test(struct net_device *dev,
  			      struct ethtool_test *etest, u64 *buf)
  {
  	mlx4_en_ex_selftest(dev, &etest->flags, buf);
  }
  
  static void mlx4_en_get_strings(struct net_device *dev,
  				uint32_t stringset, uint8_t *data)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	int index = 0;
  	int i, strings = 0;
  	struct bitmap_iterator it;
  
  	bitmap_iterator_init(&it, priv->stats_bitmap.bitmap, NUM_ALL_STATS);
  
  	switch (stringset) {
  	case ETH_SS_TEST:
  		for (i = 0; i < MLX4_EN_NUM_SELF_TEST - 2; i++)
  			strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
  		if (priv->mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UC_LOOPBACK)
  			for (; i < MLX4_EN_NUM_SELF_TEST; i++)
  				strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
  		break;
  
  	case ETH_SS_STATS:
  		/* Add main counters */
  		for (i = 0; i < NUM_MAIN_STATS; i++, strings++,
  		     bitmap_iterator_inc(&it))
  			if (bitmap_iterator_test(&it))
  				strcpy(data + (index++) * ETH_GSTRING_LEN,
  				       main_strings[strings]);
  
  		for (i = 0; i < NUM_PORT_STATS; i++, strings++,
  		     bitmap_iterator_inc(&it))
  			if (bitmap_iterator_test(&it))
  				strcpy(data + (index++) * ETH_GSTRING_LEN,
  				       main_strings[strings]);
  
  		for (i = 0; i < NUM_PF_STATS; i++, strings++,
  		     bitmap_iterator_inc(&it))
  			if (bitmap_iterator_test(&it))
  				strcpy(data + (index++) * ETH_GSTRING_LEN,
  				       main_strings[strings]);
  
  		for (i = 0; i < NUM_FLOW_STATS; i++, strings++,
  		     bitmap_iterator_inc(&it))
  			if (bitmap_iterator_test(&it))
  				strcpy(data + (index++) * ETH_GSTRING_LEN,
  				       main_strings[strings]);
  
  		for (i = 0; i < NUM_PKT_STATS; i++, strings++,
  		     bitmap_iterator_inc(&it))
  			if (bitmap_iterator_test(&it))
  				strcpy(data + (index++) * ETH_GSTRING_LEN,
  				       main_strings[strings]);
  
  		for (i = 0; i < priv->tx_ring_num; i++) {
  			sprintf(data + (index++) * ETH_GSTRING_LEN,
  				"tx%d_packets", i);
  			sprintf(data + (index++) * ETH_GSTRING_LEN,
  				"tx%d_bytes", i);
  		}
  		for (i = 0; i < priv->rx_ring_num; i++) {
  			sprintf(data + (index++) * ETH_GSTRING_LEN,
  				"rx%d_packets", i);
  			sprintf(data + (index++) * ETH_GSTRING_LEN,
  				"rx%d_bytes", i);
  			sprintf(data + (index++) * ETH_GSTRING_LEN,
  				"rx%d_dropped", i);
  		}
  		break;
  	case ETH_SS_PRIV_FLAGS:
  		for (i = 0; i < ARRAY_SIZE(mlx4_en_priv_flags); i++)
  			strcpy(data + i * ETH_GSTRING_LEN,
  			       mlx4_en_priv_flags[i]);
  		break;
  
  	}
  }
  
  static u32 mlx4_en_autoneg_get(struct net_device *dev)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	u32 autoneg = AUTONEG_DISABLE;
  
  	if ((mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP) &&
  	    (priv->port_state.flags & MLX4_EN_PORT_ANE))
  		autoneg = AUTONEG_ENABLE;
  
  	return autoneg;
  }
  
  static void ptys2ethtool_update_supported_port(unsigned long *mask,
  					       struct mlx4_ptys_reg *ptys_reg)
  {
  	u32 eth_proto = be32_to_cpu(ptys_reg->eth_proto_cap);
  
  	if (eth_proto & (MLX4_PROT_MASK(MLX4_10GBASE_T)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_T)
  			 | MLX4_PROT_MASK(MLX4_100BASE_TX))) {
  		__set_bit(ETHTOOL_LINK_MODE_TP_BIT, mask);
  	} else if (eth_proto & (MLX4_PROT_MASK(MLX4_10GBASE_CR)
  			 | MLX4_PROT_MASK(MLX4_10GBASE_SR)
  			 | MLX4_PROT_MASK(MLX4_56GBASE_SR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_CR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_SR4)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_CX_SGMII))) {
  		__set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, mask);
  	} else if (eth_proto & (MLX4_PROT_MASK(MLX4_56GBASE_KR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_KR4)
  			 | MLX4_PROT_MASK(MLX4_20GBASE_KR2)
  			 | MLX4_PROT_MASK(MLX4_10GBASE_KR)
  			 | MLX4_PROT_MASK(MLX4_10GBASE_KX4)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_KX))) {
  		__set_bit(ETHTOOL_LINK_MODE_Backplane_BIT, mask);
  	}
  }
  
  static u32 ptys_get_active_port(struct mlx4_ptys_reg *ptys_reg)
  {
  	u32 eth_proto = be32_to_cpu(ptys_reg->eth_proto_oper);
  
  	if (!eth_proto) /* link down */
  		eth_proto = be32_to_cpu(ptys_reg->eth_proto_cap);
  
  	if (eth_proto & (MLX4_PROT_MASK(MLX4_10GBASE_T)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_T)
  			 | MLX4_PROT_MASK(MLX4_100BASE_TX))) {
  			return PORT_TP;
  	}
  
  	if (eth_proto & (MLX4_PROT_MASK(MLX4_10GBASE_SR)
  			 | MLX4_PROT_MASK(MLX4_56GBASE_SR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_SR4)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_CX_SGMII))) {
  			return PORT_FIBRE;
  	}
  
  	if (eth_proto & (MLX4_PROT_MASK(MLX4_10GBASE_CR)
  			 | MLX4_PROT_MASK(MLX4_56GBASE_CR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_CR4))) {
  			return PORT_DA;
  	}
  
  	if (eth_proto & (MLX4_PROT_MASK(MLX4_56GBASE_KR4)
  			 | MLX4_PROT_MASK(MLX4_40GBASE_KR4)
  			 | MLX4_PROT_MASK(MLX4_20GBASE_KR2)
  			 | MLX4_PROT_MASK(MLX4_10GBASE_KR)
  			 | MLX4_PROT_MASK(MLX4_10GBASE_KX4)
  			 | MLX4_PROT_MASK(MLX4_1000BASE_KX))) {
  			return PORT_NONE;
  	}
  	return PORT_OTHER;
  }
  
  #define MLX4_LINK_MODES_SZ \
  	(FIELD_SIZEOF(struct mlx4_ptys_reg, eth_proto_cap) * 8)
  
  enum ethtool_report {
  	SUPPORTED = 0,
  	ADVERTISED = 1,
  };
  
  struct ptys2ethtool_config {
  	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
  	__ETHTOOL_DECLARE_LINK_MODE_MASK(advertised);
  	u32 speed;
  };
  
  static unsigned long *ptys2ethtool_link_mode(struct ptys2ethtool_config *cfg,
  					     enum ethtool_report report)
  {
  	switch (report) {
  	case SUPPORTED:
  		return cfg->supported;
  	case ADVERTISED:
  		return cfg->advertised;
  	}
  	return NULL;
  }
  
  #define MLX4_BUILD_PTYS2ETHTOOL_CONFIG(reg_, speed_, ...)		\
  	({								\
  		struct ptys2ethtool_config *cfg;			\
  		const unsigned int modes[] = { __VA_ARGS__ };		\
  		unsigned int i;						\
  		cfg = &ptys2ethtool_map[reg_];				\
  		cfg->speed = speed_;					\
  		bitmap_zero(cfg->supported,				\
  			    __ETHTOOL_LINK_MODE_MASK_NBITS);		\
  		bitmap_zero(cfg->advertised,				\
  			    __ETHTOOL_LINK_MODE_MASK_NBITS);		\
  		for (i = 0 ; i < ARRAY_SIZE(modes) ; ++i) {		\
  			__set_bit(modes[i], cfg->supported);		\
  			__set_bit(modes[i], cfg->advertised);		\
  		}							\
  	})
  
  /* Translates mlx4 link mode to equivalent ethtool Link modes/speed */
  static struct ptys2ethtool_config ptys2ethtool_map[MLX4_LINK_MODES_SZ];
  
  void __init mlx4_en_init_ptys2ethtool_map(void)
  {
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_100BASE_TX, SPEED_100,
  				       ETHTOOL_LINK_MODE_100baseT_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_T, SPEED_1000,
  				       ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_CX_SGMII, SPEED_1000,
  				       ETHTOOL_LINK_MODE_1000baseKX_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_KX, SPEED_1000,
  				       ETHTOOL_LINK_MODE_1000baseKX_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_T, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseT_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_CX4, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_KX4, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_KR, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_CR, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_SR, SPEED_10000,
  				       ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_20GBASE_KR2, SPEED_20000,
  				       ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT,
  				       ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_40GBASE_CR4, SPEED_40000,
  				       ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_40GBASE_KR4, SPEED_40000,
  				       ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_40GBASE_SR4, SPEED_40000,
  				       ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_56GBASE_KR4, SPEED_56000,
  				       ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_56GBASE_CR4, SPEED_56000,
  				       ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT);
  	MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_56GBASE_SR4, SPEED_56000,
  				       ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT);
  };
  
  static void ptys2ethtool_update_link_modes(unsigned long *link_modes,
  					   u32 eth_proto,
  					   enum ethtool_report report)
  {
  	int i;
  	for (i = 0; i < MLX4_LINK_MODES_SZ; i++) {
  		if (eth_proto & MLX4_PROT_MASK(i))
  			bitmap_or(link_modes, link_modes,
  				  ptys2ethtool_link_mode(&ptys2ethtool_map[i],
  							 report),
  				  __ETHTOOL_LINK_MODE_MASK_NBITS);
  	}
  }
  
  static u32 ethtool2ptys_link_modes(const unsigned long *link_modes,
  				   enum ethtool_report report)
  {
  	int i;
  	u32 ptys_modes = 0;
  
  	for (i = 0; i < MLX4_LINK_MODES_SZ; i++) {
  		if (bitmap_intersects(
  			    ptys2ethtool_link_mode(&ptys2ethtool_map[i],
  						   report),
  			    link_modes,
  			    __ETHTOOL_LINK_MODE_MASK_NBITS))
  			ptys_modes |= 1 << i;
  	}
  	return ptys_modes;
  }
  
  /* Convert actual speed (SPEED_XXX) to ptys link modes */
  static u32 speed2ptys_link_modes(u32 speed)
  {
  	int i;
  	u32 ptys_modes = 0;
  
  	for (i = 0; i < MLX4_LINK_MODES_SZ; i++) {
  		if (ptys2ethtool_map[i].speed == speed)
  			ptys_modes |= 1 << i;
  	}
  	return ptys_modes;
  }
  
  static int
  ethtool_get_ptys_link_ksettings(struct net_device *dev,
  				struct ethtool_link_ksettings *link_ksettings)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_ptys_reg ptys_reg;
  	u32 eth_proto;
  	int ret;
  
  	memset(&ptys_reg, 0, sizeof(ptys_reg));
  	ptys_reg.local_port = priv->port;
  	ptys_reg.proto_mask = MLX4_PTYS_EN;
  	ret = mlx4_ACCESS_PTYS_REG(priv->mdev->dev,
  				   MLX4_ACCESS_REG_QUERY, &ptys_reg);
  	if (ret) {
  		en_warn(priv, "Failed to run mlx4_ACCESS_PTYS_REG status(%x)",
  			ret);
  		return ret;
  	}
  	en_dbg(DRV, priv, "ptys_reg.proto_mask       %x\n",
  	       ptys_reg.proto_mask);
  	en_dbg(DRV, priv, "ptys_reg.eth_proto_cap    %x\n",
  	       be32_to_cpu(ptys_reg.eth_proto_cap));
  	en_dbg(DRV, priv, "ptys_reg.eth_proto_admin  %x\n",
  	       be32_to_cpu(ptys_reg.eth_proto_admin));
  	en_dbg(DRV, priv, "ptys_reg.eth_proto_oper   %x\n",
  	       be32_to_cpu(ptys_reg.eth_proto_oper));
  	en_dbg(DRV, priv, "ptys_reg.eth_proto_lp_adv %x\n",
  	       be32_to_cpu(ptys_reg.eth_proto_lp_adv));
  
  	/* reset supported/advertising masks */
  	ethtool_link_ksettings_zero_link_mode(link_ksettings, supported);
  	ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
  
  	ptys2ethtool_update_supported_port(link_ksettings->link_modes.supported,
  					   &ptys_reg);
  
  	eth_proto = be32_to_cpu(ptys_reg.eth_proto_cap);
  	ptys2ethtool_update_link_modes(link_ksettings->link_modes.supported,
  				       eth_proto, SUPPORTED);
  
  	eth_proto = be32_to_cpu(ptys_reg.eth_proto_admin);
  	ptys2ethtool_update_link_modes(link_ksettings->link_modes.advertising,
  				       eth_proto, ADVERTISED);
  
  	ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
  					     Pause);
  	ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
  					     Asym_Pause);
  
  	if (priv->prof->tx_pause)
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     advertising, Pause);
  	if (priv->prof->tx_pause ^ priv->prof->rx_pause)
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     advertising, Asym_Pause);
  
  	link_ksettings->base.port = ptys_get_active_port(&ptys_reg);
  
  	if (mlx4_en_autoneg_get(dev)) {
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     supported, Autoneg);
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     advertising, Autoneg);
  	}
  
  	link_ksettings->base.autoneg
  		= (priv->port_state.flags & MLX4_EN_PORT_ANC) ?
  		AUTONEG_ENABLE : AUTONEG_DISABLE;
  
  	eth_proto = be32_to_cpu(ptys_reg.eth_proto_lp_adv);
  
  	ethtool_link_ksettings_zero_link_mode(link_ksettings, lp_advertising);
  	ptys2ethtool_update_link_modes(
  		link_ksettings->link_modes.lp_advertising,
  		eth_proto, ADVERTISED);
  	if (priv->port_state.flags & MLX4_EN_PORT_ANC)
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     lp_advertising, Autoneg);
  
  	link_ksettings->base.phy_address = 0;
  	link_ksettings->base.mdio_support = 0;
  	link_ksettings->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
  	link_ksettings->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
  
  	return ret;
  }
  
  static void
  ethtool_get_default_link_ksettings(
  	struct net_device *dev, struct ethtool_link_ksettings *link_ksettings)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	int trans_type;
  
  	link_ksettings->base.autoneg = AUTONEG_DISABLE;
  
  	ethtool_link_ksettings_zero_link_mode(link_ksettings, supported);
  	ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
  					     10000baseT_Full);
  
  	ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
  	ethtool_link_ksettings_add_link_mode(link_ksettings, advertising,
  					     10000baseT_Full);
  
  	trans_type = priv->port_state.transceiver;
  	if (trans_type > 0 && trans_type <= 0xC) {
  		link_ksettings->base.port = PORT_FIBRE;
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     supported, FIBRE);
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     advertising, FIBRE);
  	} else if (trans_type == 0x80 || trans_type == 0) {
  		link_ksettings->base.port = PORT_TP;
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     supported, TP);
  		ethtool_link_ksettings_add_link_mode(link_ksettings,
  						     advertising, TP);
  	} else  {
  		link_ksettings->base.port = -1;
  	}
  }
  
  static int
  mlx4_en_get_link_ksettings(struct net_device *dev,
  			   struct ethtool_link_ksettings *link_ksettings)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	int ret = -EINVAL;
  
  	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
  		return -ENOMEM;
  
  	en_dbg(DRV, priv, "query port state.flags ANC(%x) ANE(%x)\n",
  	       priv->port_state.flags & MLX4_EN_PORT_ANC,
  	       priv->port_state.flags & MLX4_EN_PORT_ANE);
  
  	if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL)
  		ret = ethtool_get_ptys_link_ksettings(dev, link_ksettings);
  	if (ret) /* ETH PROT CRTL is not supported or PTYS CMD failed */
  		ethtool_get_default_link_ksettings(dev, link_ksettings);
  
  	if (netif_carrier_ok(dev)) {
  		link_ksettings->base.speed = priv->port_state.link_speed;
  		link_ksettings->base.duplex = DUPLEX_FULL;
  	} else {
  		link_ksettings->base.speed = SPEED_UNKNOWN;
  		link_ksettings->base.duplex = DUPLEX_UNKNOWN;
  	}
  	return 0;
  }
  
  /* Calculate PTYS admin according ethtool speed (SPEED_XXX) */
  static __be32 speed_set_ptys_admin(struct mlx4_en_priv *priv, u32 speed,
  				   __be32 proto_cap)
  {
  	__be32 proto_admin = 0;
  
  	if (!speed) { /* Speed = 0 ==> Reset Link modes */
  		proto_admin = proto_cap;
  		en_info(priv, "Speed was set to 0, Reset advertised Link Modes to default (%x)\n",
  			be32_to_cpu(proto_cap));
  	} else {
  		u32 ptys_link_modes = speed2ptys_link_modes(speed);
  
  		proto_admin = cpu_to_be32(ptys_link_modes) & proto_cap;
  		en_info(priv, "Setting Speed to %d\n", speed);
  	}
  	return proto_admin;
  }
  
  static int
  mlx4_en_set_link_ksettings(struct net_device *dev,
  			   const struct ethtool_link_ksettings *link_ksettings)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_ptys_reg ptys_reg;
  	__be32 proto_admin;
  	int ret;
  
  	u32 ptys_adv = ethtool2ptys_link_modes(
  		link_ksettings->link_modes.advertising, ADVERTISED);
  	const int speed = link_ksettings->base.speed;
  
  	en_dbg(DRV, priv,
  	       "Set Speed=%d adv={%*pbl} autoneg=%d duplex=%d\n",
  	       speed, __ETHTOOL_LINK_MODE_MASK_NBITS,
  	       link_ksettings->link_modes.advertising,
  	       link_ksettings->base.autoneg,
  	       link_ksettings->base.duplex);
  
  	if (!(priv->mdev->dev->caps.flags2 &
  	      MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL) ||
  	    (link_ksettings->base.duplex == DUPLEX_HALF))
  		return -EINVAL;
  
  	memset(&ptys_reg, 0, sizeof(ptys_reg));
  	ptys_reg.local_port = priv->port;
  	ptys_reg.proto_mask = MLX4_PTYS_EN;
  	ret = mlx4_ACCESS_PTYS_REG(priv->mdev->dev,
  				   MLX4_ACCESS_REG_QUERY, &ptys_reg);
  	if (ret) {
  		en_warn(priv, "Failed to QUERY mlx4_ACCESS_PTYS_REG status(%x)\n",
  			ret);
  		return 0;
  	}
  
  	proto_admin = link_ksettings->base.autoneg == AUTONEG_ENABLE ?
  		cpu_to_be32(ptys_adv) :
  		speed_set_ptys_admin(priv, speed,
  				     ptys_reg.eth_proto_cap);
  
  	proto_admin &= ptys_reg.eth_proto_cap;
  	if (!proto_admin) {
  		en_warn(priv, "Not supported link mode(s) requested, check supported link modes.\n");
  		return -EINVAL; /* nothing to change due to bad input */
  	}
  
  	if (proto_admin == ptys_reg.eth_proto_admin)
  		return 0; /* Nothing to change */
  
  	en_dbg(DRV, priv, "mlx4_ACCESS_PTYS_REG SET: ptys_reg.eth_proto_admin = 0x%x\n",
  	       be32_to_cpu(proto_admin));
  
  	ptys_reg.eth_proto_admin = proto_admin;
  	ret = mlx4_ACCESS_PTYS_REG(priv->mdev->dev, MLX4_ACCESS_REG_WRITE,
  				   &ptys_reg);
  	if (ret) {
  		en_warn(priv, "Failed to write mlx4_ACCESS_PTYS_REG eth_proto_admin(0x%x) status(0x%x)",
  			be32_to_cpu(ptys_reg.eth_proto_admin), ret);
  		return ret;
  	}
  
  	mutex_lock(&priv->mdev->state_lock);
  	if (priv->port_up) {
  		en_warn(priv, "Port link mode changed, restarting port...\n");
  		mlx4_en_stop_port(dev, 1);
  		if (mlx4_en_start_port(dev))
  			en_err(priv, "Failed restarting port %d\n", priv->port);
  	}
  	mutex_unlock(&priv->mdev->state_lock);
  	return 0;
  }
  
  static int mlx4_en_get_coalesce(struct net_device *dev,
  			      struct ethtool_coalesce *coal)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	coal->tx_coalesce_usecs = priv->tx_usecs;
  	coal->tx_max_coalesced_frames = priv->tx_frames;
  	coal->tx_max_coalesced_frames_irq = priv->tx_work_limit;
  
  	coal->rx_coalesce_usecs = priv->rx_usecs;
  	coal->rx_max_coalesced_frames = priv->rx_frames;
  
  	coal->pkt_rate_low = priv->pkt_rate_low;
  	coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
  	coal->pkt_rate_high = priv->pkt_rate_high;
  	coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
  	coal->rate_sample_interval = priv->sample_interval;
  	coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
  
  	return 0;
  }
  
  static int mlx4_en_set_coalesce(struct net_device *dev,
  			      struct ethtool_coalesce *coal)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	if (!coal->tx_max_coalesced_frames_irq)
  		return -EINVAL;
  
  	priv->rx_frames = (coal->rx_max_coalesced_frames ==
  			   MLX4_EN_AUTO_CONF) ?
  				MLX4_EN_RX_COAL_TARGET :
  				coal->rx_max_coalesced_frames;
  	priv->rx_usecs = (coal->rx_coalesce_usecs ==
  			  MLX4_EN_AUTO_CONF) ?
  				MLX4_EN_RX_COAL_TIME :
  				coal->rx_coalesce_usecs;
  
  	/* Setting TX coalescing parameters */
  	if (coal->tx_coalesce_usecs != priv->tx_usecs ||
  	    coal->tx_max_coalesced_frames != priv->tx_frames) {
  		priv->tx_usecs = coal->tx_coalesce_usecs;
  		priv->tx_frames = coal->tx_max_coalesced_frames;
  	}
  
  	/* Set adaptive coalescing params */
  	priv->pkt_rate_low = coal->pkt_rate_low;
  	priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
  	priv->pkt_rate_high = coal->pkt_rate_high;
  	priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
  	priv->sample_interval = coal->rate_sample_interval;
  	priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
  	priv->tx_work_limit = coal->tx_max_coalesced_frames_irq;
  
  	return mlx4_en_moderation_update(priv);
  }
  
  static int mlx4_en_set_pauseparam(struct net_device *dev,
  				struct ethtool_pauseparam *pause)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int err;
  
  	if (pause->autoneg)
  		return -EINVAL;
  
  	priv->prof->tx_pause = pause->tx_pause != 0;
  	priv->prof->rx_pause = pause->rx_pause != 0;
  	err = mlx4_SET_PORT_general(mdev->dev, priv->port,
  				    priv->rx_skb_size + ETH_FCS_LEN,
  				    priv->prof->tx_pause,
  				    priv->prof->tx_ppp,
  				    priv->prof->rx_pause,
  				    priv->prof->rx_ppp);
  	if (err)
  		en_err(priv, "Failed setting pause params\n");
  	else
  		mlx4_en_update_pfc_stats_bitmap(mdev->dev, &priv->stats_bitmap,
  						priv->prof->rx_ppp,
  						priv->prof->rx_pause,
  						priv->prof->tx_ppp,
  						priv->prof->tx_pause);
  
  	return err;
  }
  
  static void mlx4_en_get_pauseparam(struct net_device *dev,
  				 struct ethtool_pauseparam *pause)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	pause->tx_pause = priv->prof->tx_pause;
  	pause->rx_pause = priv->prof->rx_pause;
  }
  
  static int mlx4_en_set_ringparam(struct net_device *dev,
  				 struct ethtool_ringparam *param)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	struct mlx4_en_port_profile new_prof;
  	struct mlx4_en_priv *tmp;
  	u32 rx_size, tx_size;
  	int port_up = 0;
  	int err = 0;
  
  	if (param->rx_jumbo_pending || param->rx_mini_pending)
  		return -EINVAL;
  
  	rx_size = roundup_pow_of_two(param->rx_pending);
  	rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
  	rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
  	tx_size = roundup_pow_of_two(param->tx_pending);
  	tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
  	tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
  
  	if (rx_size == (priv->port_up ? priv->rx_ring[0]->actual_size :
  					priv->rx_ring[0]->size) &&
  	    tx_size == priv->tx_ring[0]->size)
  		return 0;
  
  	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
  	if (!tmp)
  		return -ENOMEM;
  
  	mutex_lock(&mdev->state_lock);
  	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
  	new_prof.tx_ring_size = tx_size;
  	new_prof.rx_ring_size = rx_size;
  	err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
  	if (err)
  		goto out;
  
  	if (priv->port_up) {
  		port_up = 1;
  		mlx4_en_stop_port(dev, 1);
  	}
  
  	mlx4_en_safe_replace_resources(priv, tmp);
  
  	if (port_up) {
  		err = mlx4_en_start_port(dev);
  		if (err)
  			en_err(priv, "Failed starting port\n");
  	}
  
  	err = mlx4_en_moderation_update(priv);
  out:
  	kfree(tmp);
  	mutex_unlock(&mdev->state_lock);
  	return err;
  }
  
  static void mlx4_en_get_ringparam(struct net_device *dev,
  				  struct ethtool_ringparam *param)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	memset(param, 0, sizeof(*param));
  	param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
  	param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
  	param->rx_pending = priv->port_up ?
  		priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size;
  	param->tx_pending = priv->tx_ring[0]->size;
  }
  
  static u32 mlx4_en_get_rxfh_indir_size(struct net_device *dev)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	return priv->rx_ring_num;
  }
  
  static u32 mlx4_en_get_rxfh_key_size(struct net_device *netdev)
  {
  	return MLX4_EN_RSS_KEY_SIZE;
  }
  
  static int mlx4_en_check_rxfh_func(struct net_device *dev, u8 hfunc)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	/* check if requested function is supported by the device */
  	if (hfunc == ETH_RSS_HASH_TOP) {
  		if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP))
  			return -EINVAL;
  		if (!(dev->features & NETIF_F_RXHASH))
  			en_warn(priv, "Toeplitz hash function should be used in conjunction with RX hashing for optimal performance\n");
  		return 0;
  	} else if (hfunc == ETH_RSS_HASH_XOR) {
  		if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR))
  			return -EINVAL;
  		if (dev->features & NETIF_F_RXHASH)
  			en_warn(priv, "Enabling both XOR Hash function and RX Hashing can limit RPS functionality\n");
  		return 0;
  	}
  
  	return -EINVAL;
  }
  
  static int mlx4_en_get_rxfh(struct net_device *dev, u32 *ring_index, u8 *key,
  			    u8 *hfunc)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_rss_map *rss_map = &priv->rss_map;
  	int rss_rings;
  	size_t n = priv->rx_ring_num;
  	int err = 0;
  
  	rss_rings = priv->prof->rss_rings ?: priv->rx_ring_num;
  	rss_rings = 1 << ilog2(rss_rings);
  
  	while (n--) {
  		if (!ring_index)
  			break;
  		ring_index[n] = rss_map->qps[n % rss_rings].qpn -
  			rss_map->base_qpn;
  	}
  	if (key)
  		memcpy(key, priv->rss_key, MLX4_EN_RSS_KEY_SIZE);
  	if (hfunc)
  		*hfunc = priv->rss_hash_fn;
  	return err;
  }
  
  static int mlx4_en_set_rxfh(struct net_device *dev, const u32 *ring_index,
  			    const u8 *key, const u8 hfunc)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int port_up = 0;
  	int err = 0;
  	int i;
  	int rss_rings = 0;
  
  	/* Calculate RSS table size and make sure flows are spread evenly
  	 * between rings
  	 */
  	for (i = 0; i < priv->rx_ring_num; i++) {
  		if (!ring_index)
  			continue;
  		if (i > 0 && !ring_index[i] && !rss_rings)
  			rss_rings = i;
  
  		if (ring_index[i] != (i % (rss_rings ?: priv->rx_ring_num)))
  			return -EINVAL;
  	}
  
  	if (!rss_rings)
  		rss_rings = priv->rx_ring_num;
  
  	/* RSS table size must be an order of 2 */
  	if (!is_power_of_2(rss_rings))
  		return -EINVAL;
  
  	if (hfunc != ETH_RSS_HASH_NO_CHANGE) {
  		err = mlx4_en_check_rxfh_func(dev, hfunc);
  		if (err)
  			return err;
  	}
  
  	mutex_lock(&mdev->state_lock);
  	if (priv->port_up) {
  		port_up = 1;
  		mlx4_en_stop_port(dev, 1);
  	}
  
  	if (ring_index)
  		priv->prof->rss_rings = rss_rings;
  	if (key)
  		memcpy(priv->rss_key, key, MLX4_EN_RSS_KEY_SIZE);
  	if (hfunc !=  ETH_RSS_HASH_NO_CHANGE)
  		priv->rss_hash_fn = hfunc;
  
  	if (port_up) {
  		err = mlx4_en_start_port(dev);
  		if (err)
  			en_err(priv, "Failed starting port\n");
  	}
  
  	mutex_unlock(&mdev->state_lock);
  	return err;
  }
  
  #define all_zeros_or_all_ones(field)		\
  	((field) == 0 || (field) == (__force typeof(field))-1)
  
  static int mlx4_en_validate_flow(struct net_device *dev,
  				 struct ethtool_rxnfc *cmd)
  {
  	struct ethtool_usrip4_spec *l3_mask;
  	struct ethtool_tcpip4_spec *l4_mask;
  	struct ethhdr *eth_mask;
  
  	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
  		return -EINVAL;
  
  	if (cmd->fs.flow_type & FLOW_MAC_EXT) {
  		/* dest mac mask must be ff:ff:ff:ff:ff:ff */
  		if (!is_broadcast_ether_addr(cmd->fs.m_ext.h_dest))
  			return -EINVAL;
  	}
  
  	switch (cmd->fs.flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
  	case TCP_V4_FLOW:
  	case UDP_V4_FLOW:
  		if (cmd->fs.m_u.tcp_ip4_spec.tos)
  			return -EINVAL;
  		l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
  		/* don't allow mask which isn't all 0 or 1 */
  		if (!all_zeros_or_all_ones(l4_mask->ip4src) ||
  		    !all_zeros_or_all_ones(l4_mask->ip4dst) ||
  		    !all_zeros_or_all_ones(l4_mask->psrc) ||
  		    !all_zeros_or_all_ones(l4_mask->pdst))
  			return -EINVAL;
  		break;
  	case IP_USER_FLOW:
  		l3_mask = &cmd->fs.m_u.usr_ip4_spec;
  		if (l3_mask->l4_4_bytes || l3_mask->tos || l3_mask->proto ||
  		    cmd->fs.h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4 ||
  		    (!l3_mask->ip4src && !l3_mask->ip4dst) ||
  		    !all_zeros_or_all_ones(l3_mask->ip4src) ||
  		    !all_zeros_or_all_ones(l3_mask->ip4dst))
  			return -EINVAL;
  		break;
  	case ETHER_FLOW:
  		eth_mask = &cmd->fs.m_u.ether_spec;
  		/* source mac mask must not be set */
  		if (!is_zero_ether_addr(eth_mask->h_source))
  			return -EINVAL;
  
  		/* dest mac mask must be ff:ff:ff:ff:ff:ff */
  		if (!is_broadcast_ether_addr(eth_mask->h_dest))
  			return -EINVAL;
  
  		if (!all_zeros_or_all_ones(eth_mask->h_proto))
  			return -EINVAL;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	if ((cmd->fs.flow_type & FLOW_EXT)) {
  		if (cmd->fs.m_ext.vlan_etype ||
  		    !((cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK)) ==
  		      0 ||
  		      (cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK)) ==
  		      cpu_to_be16(VLAN_VID_MASK)))
  			return -EINVAL;
  
  		if (cmd->fs.m_ext.vlan_tci) {
  			if (be16_to_cpu(cmd->fs.h_ext.vlan_tci) >= VLAN_N_VID)
  				return -EINVAL;
  
  		}
  	}
  
  	return 0;
  }
  
  static int mlx4_en_ethtool_add_mac_rule(struct ethtool_rxnfc *cmd,
  					struct list_head *rule_list_h,
  					struct mlx4_spec_list *spec_l2,
  					unsigned char *mac)
  {
  	int err = 0;
  	__be64 mac_msk = cpu_to_be64(MLX4_MAC_MASK << 16);
  
  	spec_l2->id = MLX4_NET_TRANS_RULE_ID_ETH;
  	memcpy(spec_l2->eth.dst_mac_msk, &mac_msk, ETH_ALEN);
  	memcpy(spec_l2->eth.dst_mac, mac, ETH_ALEN);
  
  	if ((cmd->fs.flow_type & FLOW_EXT) &&
  	    (cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK))) {
  		spec_l2->eth.vlan_id = cmd->fs.h_ext.vlan_tci;
  		spec_l2->eth.vlan_id_msk = cpu_to_be16(VLAN_VID_MASK);
  	}
  
  	list_add_tail(&spec_l2->list, rule_list_h);
  
  	return err;
  }
  
  static int mlx4_en_ethtool_add_mac_rule_by_ipv4(struct mlx4_en_priv *priv,
  						struct ethtool_rxnfc *cmd,
  						struct list_head *rule_list_h,
  						struct mlx4_spec_list *spec_l2,
  						__be32 ipv4_dst)
  {
  #ifdef CONFIG_INET
  	unsigned char mac[ETH_ALEN];
  
  	if (!ipv4_is_multicast(ipv4_dst)) {
  		if (cmd->fs.flow_type & FLOW_MAC_EXT)
  			memcpy(&mac, cmd->fs.h_ext.h_dest, ETH_ALEN);
  		else
  			memcpy(&mac, priv->dev->dev_addr, ETH_ALEN);
  	} else {
  		ip_eth_mc_map(ipv4_dst, mac);
  	}
  
  	return mlx4_en_ethtool_add_mac_rule(cmd, rule_list_h, spec_l2, &mac[0]);
  #else
  	return -EINVAL;
  #endif
  }
  
  static int add_ip_rule(struct mlx4_en_priv *priv,
  		       struct ethtool_rxnfc *cmd,
  		       struct list_head *list_h)
  {
  	int err;
  	struct mlx4_spec_list *spec_l2 = NULL;
  	struct mlx4_spec_list *spec_l3 = NULL;
  	struct ethtool_usrip4_spec *l3_mask = &cmd->fs.m_u.usr_ip4_spec;
  
  	spec_l3 = kzalloc(sizeof(*spec_l3), GFP_KERNEL);
  	spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
  	if (!spec_l2 || !spec_l3) {
  		err = -ENOMEM;
  		goto free_spec;
  	}
  
  	err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h, spec_l2,
  						   cmd->fs.h_u.
  						   usr_ip4_spec.ip4dst);
  	if (err)
  		goto free_spec;
  	spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
  	spec_l3->ipv4.src_ip = cmd->fs.h_u.usr_ip4_spec.ip4src;
  	if (l3_mask->ip4src)
  		spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
  	spec_l3->ipv4.dst_ip = cmd->fs.h_u.usr_ip4_spec.ip4dst;
  	if (l3_mask->ip4dst)
  		spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
  	list_add_tail(&spec_l3->list, list_h);
  
  	return 0;
  
  free_spec:
  	kfree(spec_l2);
  	kfree(spec_l3);
  	return err;
  }
  
  static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
  			     struct ethtool_rxnfc *cmd,
  			     struct list_head *list_h, int proto)
  {
  	int err;
  	struct mlx4_spec_list *spec_l2 = NULL;
  	struct mlx4_spec_list *spec_l3 = NULL;
  	struct mlx4_spec_list *spec_l4 = NULL;
  	struct ethtool_tcpip4_spec *l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
  
  	spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
  	spec_l3 = kzalloc(sizeof(*spec_l3), GFP_KERNEL);
  	spec_l4 = kzalloc(sizeof(*spec_l4), GFP_KERNEL);
  	if (!spec_l2 || !spec_l3 || !spec_l4) {
  		err = -ENOMEM;
  		goto free_spec;
  	}
  
  	spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
  
  	if (proto == TCP_V4_FLOW) {
  		err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
  							   spec_l2,
  							   cmd->fs.h_u.
  							   tcp_ip4_spec.ip4dst);
  		if (err)
  			goto free_spec;
  		spec_l4->id = MLX4_NET_TRANS_RULE_ID_TCP;
  		spec_l3->ipv4.src_ip = cmd->fs.h_u.tcp_ip4_spec.ip4src;
  		spec_l3->ipv4.dst_ip = cmd->fs.h_u.tcp_ip4_spec.ip4dst;
  		spec_l4->tcp_udp.src_port = cmd->fs.h_u.tcp_ip4_spec.psrc;
  		spec_l4->tcp_udp.dst_port = cmd->fs.h_u.tcp_ip4_spec.pdst;
  	} else {
  		err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
  							   spec_l2,
  							   cmd->fs.h_u.
  							   udp_ip4_spec.ip4dst);
  		if (err)
  			goto free_spec;
  		spec_l4->id = MLX4_NET_TRANS_RULE_ID_UDP;
  		spec_l3->ipv4.src_ip = cmd->fs.h_u.udp_ip4_spec.ip4src;
  		spec_l3->ipv4.dst_ip = cmd->fs.h_u.udp_ip4_spec.ip4dst;
  		spec_l4->tcp_udp.src_port = cmd->fs.h_u.udp_ip4_spec.psrc;
  		spec_l4->tcp_udp.dst_port = cmd->fs.h_u.udp_ip4_spec.pdst;
  	}
  
  	if (l4_mask->ip4src)
  		spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
  	if (l4_mask->ip4dst)
  		spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
  
  	if (l4_mask->psrc)
  		spec_l4->tcp_udp.src_port_msk = EN_ETHTOOL_SHORT_MASK;
  	if (l4_mask->pdst)
  		spec_l4->tcp_udp.dst_port_msk = EN_ETHTOOL_SHORT_MASK;
  
  	list_add_tail(&spec_l3->list, list_h);
  	list_add_tail(&spec_l4->list, list_h);
  
  	return 0;
  
  free_spec:
  	kfree(spec_l2);
  	kfree(spec_l3);
  	kfree(spec_l4);
  	return err;
  }
  
  static int mlx4_en_ethtool_to_net_trans_rule(struct net_device *dev,
  					     struct ethtool_rxnfc *cmd,
  					     struct list_head *rule_list_h)
  {
  	int err;
  	struct ethhdr *eth_spec;
  	struct mlx4_spec_list *spec_l2;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	err = mlx4_en_validate_flow(dev, cmd);
  	if (err)
  		return err;
  
  	switch (cmd->fs.flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
  	case ETHER_FLOW:
  		spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
  		if (!spec_l2)
  			return -ENOMEM;
  
  		eth_spec = &cmd->fs.h_u.ether_spec;
  		mlx4_en_ethtool_add_mac_rule(cmd, rule_list_h, spec_l2,
  					     &eth_spec->h_dest[0]);
  		spec_l2->eth.ether_type = eth_spec->h_proto;
  		if (eth_spec->h_proto)
  			spec_l2->eth.ether_type_enable = 1;
  		break;
  	case IP_USER_FLOW:
  		err = add_ip_rule(priv, cmd, rule_list_h);
  		break;
  	case TCP_V4_FLOW:
  		err = add_tcp_udp_rule(priv, cmd, rule_list_h, TCP_V4_FLOW);
  		break;
  	case UDP_V4_FLOW:
  		err = add_tcp_udp_rule(priv, cmd, rule_list_h, UDP_V4_FLOW);
  		break;
  	}
  
  	return err;
  }
  
  static int mlx4_en_flow_replace(struct net_device *dev,
  				struct ethtool_rxnfc *cmd)
  {
  	int err;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct ethtool_flow_id *loc_rule;
  	struct mlx4_spec_list *spec, *tmp_spec;
  	u32 qpn;
  	u64 reg_id;
  
  	struct mlx4_net_trans_rule rule = {
  		.queue_mode = MLX4_NET_TRANS_Q_FIFO,
  		.exclusive = 0,
  		.allow_loopback = 1,
  		.promisc_mode = MLX4_FS_REGULAR,
  	};
  
  	rule.port = priv->port;
  	rule.priority = MLX4_DOMAIN_ETHTOOL | cmd->fs.location;
  	INIT_LIST_HEAD(&rule.list);
  
  	/* Allow direct QP attaches if the EN_ETHTOOL_QP_ATTACH flag is set */
  	if (cmd->fs.ring_cookie == RX_CLS_FLOW_DISC)
  		qpn = priv->drop_qp.qpn;
  	else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) {
  		qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1);
  	} else {
  		if (cmd->fs.ring_cookie >= priv->rx_ring_num) {
  			en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist\n",
  				cmd->fs.ring_cookie);
  			return -EINVAL;
  		}
  		qpn = priv->rss_map.qps[cmd->fs.ring_cookie].qpn;
  		if (!qpn) {
  			en_warn(priv, "rxnfc: RX ring (%llu) is inactive\n",
  				cmd->fs.ring_cookie);
  			return -EINVAL;
  		}
  	}
  	rule.qpn = qpn;
  	err = mlx4_en_ethtool_to_net_trans_rule(dev, cmd, &rule.list);
  	if (err)
  		goto out_free_list;
  
  	loc_rule = &priv->ethtool_rules[cmd->fs.location];
  	if (loc_rule->id) {
  		err = mlx4_flow_detach(priv->mdev->dev, loc_rule->id);
  		if (err) {
  			en_err(priv, "Fail to detach network rule at location %d. registration id = %llx\n",
  			       cmd->fs.location, loc_rule->id);
  			goto out_free_list;
  		}
  		loc_rule->id = 0;
  		memset(&loc_rule->flow_spec, 0,
  		       sizeof(struct ethtool_rx_flow_spec));
  		list_del(&loc_rule->list);
  	}
  	err = mlx4_flow_attach(priv->mdev->dev, &rule, &reg_id);
  	if (err) {
  		en_err(priv, "Fail to attach network rule at location %d\n",
  		       cmd->fs.location);
  		goto out_free_list;
  	}
  	loc_rule->id = reg_id;
  	memcpy(&loc_rule->flow_spec, &cmd->fs,
  	       sizeof(struct ethtool_rx_flow_spec));
  	list_add_tail(&loc_rule->list, &priv->ethtool_list);
  
  out_free_list:
  	list_for_each_entry_safe(spec, tmp_spec, &rule.list, list) {
  		list_del(&spec->list);
  		kfree(spec);
  	}
  	return err;
  }
  
  static int mlx4_en_flow_detach(struct net_device *dev,
  			       struct ethtool_rxnfc *cmd)
  {
  	int err = 0;
  	struct ethtool_flow_id *rule;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
  		return -EINVAL;
  
  	rule = &priv->ethtool_rules[cmd->fs.location];
  	if (!rule->id) {
  		err =  -ENOENT;
  		goto out;
  	}
  
  	err = mlx4_flow_detach(priv->mdev->dev, rule->id);
  	if (err) {
  		en_err(priv, "Fail to detach network rule at location %d. registration id = 0x%llx\n",
  		       cmd->fs.location, rule->id);
  		goto out;
  	}
  	rule->id = 0;
  	memset(&rule->flow_spec, 0, sizeof(struct ethtool_rx_flow_spec));
  	list_del(&rule->list);
  out:
  	return err;
  
  }
  
  static int mlx4_en_get_flow(struct net_device *dev, struct ethtool_rxnfc *cmd,
  			    int loc)
  {
  	int err = 0;
  	struct ethtool_flow_id *rule;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	if (loc < 0 || loc >= MAX_NUM_OF_FS_RULES)
  		return -EINVAL;
  
  	rule = &priv->ethtool_rules[loc];
  	if (rule->id)
  		memcpy(&cmd->fs, &rule->flow_spec,
  		       sizeof(struct ethtool_rx_flow_spec));
  	else
  		err = -ENOENT;
  
  	return err;
  }
  
  static int mlx4_en_get_num_flows(struct mlx4_en_priv *priv)
  {
  
  	int i, res = 0;
  	for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) {
  		if (priv->ethtool_rules[i].id)
  			res++;
  	}
  	return res;
  
  }
  
  static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
  			     u32 *rule_locs)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int err = 0;
  	int i = 0, priority = 0;
  
  	if ((cmd->cmd == ETHTOOL_GRXCLSRLCNT ||
  	     cmd->cmd == ETHTOOL_GRXCLSRULE ||
  	     cmd->cmd == ETHTOOL_GRXCLSRLALL) &&
  	    (mdev->dev->caps.steering_mode !=
  	     MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up))
  		return -EINVAL;
  
  	switch (cmd->cmd) {
  	case ETHTOOL_GRXRINGS:
  		cmd->data = priv->rx_ring_num;
  		break;
  	case ETHTOOL_GRXCLSRLCNT:
  		cmd->rule_cnt = mlx4_en_get_num_flows(priv);
  		break;
  	case ETHTOOL_GRXCLSRULE:
  		err = mlx4_en_get_flow(dev, cmd, cmd->fs.location);
  		break;
  	case ETHTOOL_GRXCLSRLALL:
  		while ((!err || err == -ENOENT) && priority < cmd->rule_cnt) {
  			err = mlx4_en_get_flow(dev, cmd, i);
  			if (!err)
  				rule_locs[priority++] = i;
  			i++;
  		}
  		err = 0;
  		break;
  	default:
  		err = -EOPNOTSUPP;
  		break;
  	}
  
  	return err;
  }
  
  static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
  {
  	int err = 0;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  
  	if (mdev->dev->caps.steering_mode !=
  	    MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up)
  		return -EINVAL;
  
  	switch (cmd->cmd) {
  	case ETHTOOL_SRXCLSRLINS:
  		err = mlx4_en_flow_replace(dev, cmd);
  		break;
  	case ETHTOOL_SRXCLSRLDEL:
  		err = mlx4_en_flow_detach(dev, cmd);
  		break;
  	default:
  		en_warn(priv, "Unsupported ethtool command. (%d)\n", cmd->cmd);
  		return -EINVAL;
  	}
  
  	return err;
  }
  
  static void mlx4_en_get_channels(struct net_device *dev,
  				 struct ethtool_channels *channel)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	memset(channel, 0, sizeof(*channel));
  
  	channel->max_rx = MAX_RX_RINGS;
  	channel->max_tx = MLX4_EN_MAX_TX_RING_P_UP;
  
  	channel->rx_count = priv->rx_ring_num;
  	channel->tx_count = priv->tx_ring_num / MLX4_EN_NUM_UP;
  }
  
  static int mlx4_en_set_channels(struct net_device *dev,
  				struct ethtool_channels *channel)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	struct mlx4_en_port_profile new_prof;
  	struct mlx4_en_priv *tmp;
  	int port_up = 0;
  	int err = 0;
  
  	if (channel->other_count || channel->combined_count ||
  	    channel->tx_count > MLX4_EN_MAX_TX_RING_P_UP ||
  	    channel->rx_count > MAX_RX_RINGS ||
  	    !channel->tx_count || !channel->rx_count)
  		return -EINVAL;
  
  	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
  	if (!tmp)
  		return -ENOMEM;
  
  	mutex_lock(&mdev->state_lock);
  	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
  	new_prof.num_tx_rings_p_up = channel->tx_count;
  	new_prof.tx_ring_num = channel->tx_count * MLX4_EN_NUM_UP;
  	new_prof.rx_ring_num = channel->rx_count;
  
  	err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
  	if (err)
  		goto out;
  
  	if (priv->port_up) {
  		port_up = 1;
  		mlx4_en_stop_port(dev, 1);
  	}
  
  	mlx4_en_safe_replace_resources(priv, tmp);
  
  	netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
  	netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
  
  	if (dev->num_tc)
  		mlx4_en_setup_tc(dev, MLX4_EN_NUM_UP);
  
  	en_warn(priv, "Using %d TX rings\n", priv->tx_ring_num);
  	en_warn(priv, "Using %d RX rings\n", priv->rx_ring_num);
  
  	if (port_up) {
  		err = mlx4_en_start_port(dev);
  		if (err)
  			en_err(priv, "Failed starting port\n");
  	}
  
  	err = mlx4_en_moderation_update(priv);
  out:
  	kfree(tmp);
  	mutex_unlock(&mdev->state_lock);
  	return err;
  }
  
  static int mlx4_en_get_ts_info(struct net_device *dev,
  			       struct ethtool_ts_info *info)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int ret;
  
  	ret = ethtool_op_get_ts_info(dev, info);
  	if (ret)
  		return ret;
  
  	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
  		info->so_timestamping |=
  			SOF_TIMESTAMPING_TX_HARDWARE |
  			SOF_TIMESTAMPING_RX_HARDWARE |
  			SOF_TIMESTAMPING_RAW_HARDWARE;
  
  		info->tx_types =
  			(1 << HWTSTAMP_TX_OFF) |
  			(1 << HWTSTAMP_TX_ON);
  
  		info->rx_filters =
  			(1 << HWTSTAMP_FILTER_NONE) |
  			(1 << HWTSTAMP_FILTER_ALL);
  
  		if (mdev->ptp_clock)
  			info->phc_index = ptp_clock_index(mdev->ptp_clock);
  	}
  
  	return ret;
  }
  
  static int mlx4_en_set_priv_flags(struct net_device *dev, u32 flags)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	bool bf_enabled_new = !!(flags & MLX4_EN_PRIV_FLAGS_BLUEFLAME);
  	bool bf_enabled_old = !!(priv->pflags & MLX4_EN_PRIV_FLAGS_BLUEFLAME);
  	bool phv_enabled_new = !!(flags & MLX4_EN_PRIV_FLAGS_PHV);
  	bool phv_enabled_old = !!(priv->pflags & MLX4_EN_PRIV_FLAGS_PHV);
  	int i;
  	int ret = 0;
  
  	if (bf_enabled_new != bf_enabled_old) {
  		if (bf_enabled_new) {
  			bool bf_supported = true;
  
  			for (i = 0; i < priv->tx_ring_num; i++)
  				bf_supported &= priv->tx_ring[i]->bf_alloced;
  
  			if (!bf_supported) {
  				en_err(priv, "BlueFlame is not supported\n");
  				return -EINVAL;
  			}
  
  			priv->pflags |= MLX4_EN_PRIV_FLAGS_BLUEFLAME;
  		} else {
  			priv->pflags &= ~MLX4_EN_PRIV_FLAGS_BLUEFLAME;
  		}
  
  		for (i = 0; i < priv->tx_ring_num; i++)
  			priv->tx_ring[i]->bf_enabled = bf_enabled_new;
  
  		en_info(priv, "BlueFlame %s\n",
  			bf_enabled_new ?  "Enabled" : "Disabled");
  	}
  
  	if (phv_enabled_new != phv_enabled_old) {
  		ret = set_phv_bit(mdev->dev, priv->port, (int)phv_enabled_new);
  		if (ret)
  			return ret;
  		else if (phv_enabled_new)
  			priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
  		else
  			priv->pflags &= ~MLX4_EN_PRIV_FLAGS_PHV;
  		en_info(priv, "PHV bit %s\n",
  			phv_enabled_new ?  "Enabled" : "Disabled");
  	}
  	return 0;
  }
  
  static u32 mlx4_en_get_priv_flags(struct net_device *dev)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  
  	return priv->pflags;
  }
  
  static int mlx4_en_get_tunable(struct net_device *dev,
  			       const struct ethtool_tunable *tuna,
  			       void *data)
  {
  	const struct mlx4_en_priv *priv = netdev_priv(dev);
  	int ret = 0;
  
  	switch (tuna->id) {
  	case ETHTOOL_TX_COPYBREAK:
  		*(u32 *)data = priv->prof->inline_thold;
  		break;
  	default:
  		ret = -EINVAL;
  		break;
  	}
  
  	return ret;
  }
  
  static int mlx4_en_set_tunable(struct net_device *dev,
  			       const struct ethtool_tunable *tuna,
  			       const void *data)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	int val, ret = 0;
  
  	switch (tuna->id) {
  	case ETHTOOL_TX_COPYBREAK:
  		val = *(u32 *)data;
  		if (val < MIN_PKT_LEN || val > MAX_INLINE)
  			ret = -EINVAL;
  		else
  			priv->prof->inline_thold = val;
  		break;
  	default:
  		ret = -EINVAL;
  		break;
  	}
  
  	return ret;
  }
  
  static int mlx4_en_get_module_info(struct net_device *dev,
  				   struct ethtool_modinfo *modinfo)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int ret;
  	u8 data[4];
  
  	/* Read first 2 bytes to get Module & REV ID */
  	ret = mlx4_get_module_info(mdev->dev, priv->port,
  				   0/*offset*/, 2/*size*/, data);
  	if (ret < 2)
  		return -EIO;
  
  	switch (data[0] /* identifier */) {
  	case MLX4_MODULE_ID_QSFP:
  		modinfo->type = ETH_MODULE_SFF_8436;
  		modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
  		break;
  	case MLX4_MODULE_ID_QSFP_PLUS:
  		if (data[1] >= 0x3) { /* revision id */
  			modinfo->type = ETH_MODULE_SFF_8636;
  			modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
  		} else {
  			modinfo->type = ETH_MODULE_SFF_8436;
  			modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
  		}
  		break;
  	case MLX4_MODULE_ID_QSFP28:
  		modinfo->type = ETH_MODULE_SFF_8636;
  		modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
  		break;
  	case MLX4_MODULE_ID_SFP:
  		modinfo->type = ETH_MODULE_SFF_8472;
  		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
  		break;
  	default:
  		return -ENOSYS;
  	}
  
  	return 0;
  }
  
  static int mlx4_en_get_module_eeprom(struct net_device *dev,
  				     struct ethtool_eeprom *ee,
  				     u8 *data)
  {
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  	int offset = ee->offset;
  	int i = 0, ret;
  
  	if (ee->len == 0)
  		return -EINVAL;
  
  	memset(data, 0, ee->len);
  
  	while (i < ee->len) {
  		en_dbg(DRV, priv,
  		       "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
  		       i, offset, ee->len - i);
  
  		ret = mlx4_get_module_info(mdev->dev, priv->port,
  					   offset, ee->len - i, data + i);
  
  		if (!ret) /* Done reading */
  			return 0;
  
  		if (ret < 0) {
  			en_err(priv,
  			       "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
  			       i, offset, ee->len - i, ret);
  			return 0;
  		}
  
  		i += ret;
  		offset += ret;
  	}
  	return 0;
  }
  
  static int mlx4_en_set_phys_id(struct net_device *dev,
  			       enum ethtool_phys_id_state state)
  {
  	int err;
  	u16 beacon_duration;
  	struct mlx4_en_priv *priv = netdev_priv(dev);
  	struct mlx4_en_dev *mdev = priv->mdev;
  
  	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_BEACON))
  		return -EOPNOTSUPP;
  
  	switch (state) {
  	case ETHTOOL_ID_ACTIVE:
  		beacon_duration = PORT_BEACON_MAX_LIMIT;
  		break;
  	case ETHTOOL_ID_INACTIVE:
  		beacon_duration = 0;
  		break;
  	default:
  		return -EOPNOTSUPP;
  	}
  
  	err = mlx4_SET_PORT_BEACON(mdev->dev, priv->port, beacon_duration);
  	return err;
  }
  
  const struct ethtool_ops mlx4_en_ethtool_ops = {
  	.get_drvinfo = mlx4_en_get_drvinfo,
  	.get_link_ksettings = mlx4_en_get_link_ksettings,
  	.set_link_ksettings = mlx4_en_set_link_ksettings,
  	.get_link = ethtool_op_get_link,
  	.get_strings = mlx4_en_get_strings,
  	.get_sset_count = mlx4_en_get_sset_count,
  	.get_ethtool_stats = mlx4_en_get_ethtool_stats,
  	.self_test = mlx4_en_self_test,
  	.set_phys_id = mlx4_en_set_phys_id,
  	.get_wol = mlx4_en_get_wol,
  	.set_wol = mlx4_en_set_wol,
  	.get_msglevel = mlx4_en_get_msglevel,
  	.set_msglevel = mlx4_en_set_msglevel,
  	.get_coalesce = mlx4_en_get_coalesce,
  	.set_coalesce = mlx4_en_set_coalesce,
  	.get_pauseparam = mlx4_en_get_pauseparam,
  	.set_pauseparam = mlx4_en_set_pauseparam,
  	.get_ringparam = mlx4_en_get_ringparam,
  	.set_ringparam = mlx4_en_set_ringparam,
  	.get_rxnfc = mlx4_en_get_rxnfc,
  	.set_rxnfc = mlx4_en_set_rxnfc,
  	.get_rxfh_indir_size = mlx4_en_get_rxfh_indir_size,
  	.get_rxfh_key_size = mlx4_en_get_rxfh_key_size,
  	.get_rxfh = mlx4_en_get_rxfh,
  	.set_rxfh = mlx4_en_set_rxfh,
  	.get_channels = mlx4_en_get_channels,
  	.set_channels = mlx4_en_set_channels,
  	.get_ts_info = mlx4_en_get_ts_info,
  	.set_priv_flags = mlx4_en_set_priv_flags,
  	.get_priv_flags = mlx4_en_get_priv_flags,
  	.get_tunable		= mlx4_en_get_tunable,
  	.set_tunable		= mlx4_en_set_tunable,
  	.get_module_info = mlx4_en_get_module_info,
  	.get_module_eeprom = mlx4_en_get_module_eeprom
  };
  
  
  
  
  
  