drivers/net/ethernet/mellanox/mlx4/en_port.c - linux - Git at Google

 /*
  * 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/if_vlan.h>

 #include <linux/mlx4/device.h>
 #include <linux/mlx4/cmd.h>

 #include "en_port.h"
 #include "mlx4_en.h"


 int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, struct mlx4_en_priv *priv)
 {
 	struct mlx4_cmd_mailbox *mailbox;
 	struct mlx4_set_vlan_fltr_mbox *filter;
 	int i;
 	int j;
 	int index = 0;
 	u32 entry;
 	int err = 0;

 	mailbox = mlx4_alloc_cmd_mailbox(dev);
 	if (IS_ERR(mailbox))
 		return PTR_ERR(mailbox);

 	filter = mailbox->buf;
 	for (i = VLAN_FLTR_SIZE - 1; i >= 0; i--) {
 		entry = 0;
 		for (j = 0; j < 32; j++)
 			if (test_bit(index++, priv->active_vlans))
 				entry |= 1 << j;
 		filter->entry[i] = cpu_to_be32(entry);
 	}
 	err = mlx4_cmd(dev, mailbox->dma, priv->port, 0, MLX4_CMD_SET_VLAN_FLTR,
 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
 	mlx4_free_cmd_mailbox(dev, mailbox);
 	return err;
 }

 int mlx4_en_QUERY_PORT(struct mlx4_en_dev *mdev, u8 port)
 {
 	struct mlx4_en_query_port_context *qport_context;
 	struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
 	struct mlx4_en_port_state *state = &priv->port_state;
 	struct mlx4_cmd_mailbox *mailbox;
 	int err;

 	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 	if (IS_ERR(mailbox))
 		return PTR_ERR(mailbox);
 	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 			   MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 			   MLX4_CMD_WRAPPED);
 	if (err)
 		goto out;
 	qport_context = mailbox->buf;

 	/* This command is always accessed from Ethtool context
 	 * already synchronized, no need in locking */
 	state->link_state = !!(qport_context->link_up & MLX4_EN_LINK_UP_MASK);
 	switch (qport_context->link_speed & MLX4_EN_SPEED_MASK) {
 	case MLX4_EN_100M_SPEED:
 		state->link_speed = SPEED_100;
 		break;
 	case MLX4_EN_1G_SPEED:
 		state->link_speed = SPEED_1000;
 		break;
 	case MLX4_EN_10G_SPEED_XAUI:
 	case MLX4_EN_10G_SPEED_XFI:
 		state->link_speed = SPEED_10000;
 		break;
 	case MLX4_EN_20G_SPEED:
 		state->link_speed = SPEED_20000;
 		break;
 	case MLX4_EN_40G_SPEED:
 		state->link_speed = SPEED_40000;
 		break;
 	case MLX4_EN_56G_SPEED:
 		state->link_speed = SPEED_56000;
 		break;
 	default:
 		state->link_speed = -1;
 		break;
 	}

 	state->transceiver = qport_context->transceiver;

 	state->flags = 0; /* Reset and recalculate the port flags */
 	state->flags |= (qport_context->link_up & MLX4_EN_ANC_MASK) ?
 		MLX4_EN_PORT_ANC : 0;
 	state->flags |= (qport_context->autoneg & MLX4_EN_AUTONEG_MASK) ?
 		MLX4_EN_PORT_ANE : 0;

 out:
 	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 	return err;
 }

 /* Each counter set is located in struct mlx4_en_stat_out_mbox
  * with a const offset between its prio components.
  * This function runs over a counter set and sum all of it's prio components.
  */
 static unsigned long en_stats_adder(__be64 *start, __be64 *next, int num)
 {
 	__be64 *curr = start;
 	unsigned long ret = 0;
 	int i;
 	int offset = next - start;

 	for (i = 0; i < num; i++) {
 		ret += be64_to_cpu(*curr);
 		curr += offset;
 	}

 	return ret;
 }

 int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
 {
 	struct mlx4_en_stat_out_mbox *mlx4_en_stats;
 	struct mlx4_en_stat_out_flow_control_mbox *flowstats;
 	struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
 	struct net_device_stats *stats = &priv->stats;
 	struct mlx4_cmd_mailbox *mailbox;
 	u64 in_mod = reset << 8 | port;
 	int err;
 	int i;

 	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 	if (IS_ERR(mailbox))
 		return PTR_ERR(mailbox);
 	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, in_mod, 0,
 			   MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B,
 			   MLX4_CMD_WRAPPED);
 	if (err)
 		goto out;

 	mlx4_en_stats = mailbox->buf;

 	spin_lock_bh(&priv->stats_lock);

 	stats->rx_packets = 0;
 	stats->rx_bytes = 0;
 	priv->port_stats.rx_chksum_good = 0;
 	priv->port_stats.rx_chksum_none = 0;
 	priv->port_stats.rx_chksum_complete = 0;
 	for (i = 0; i < priv->rx_ring_num; i++) {
 		stats->rx_packets += priv->rx_ring[i]->packets;
 		stats->rx_bytes += priv->rx_ring[i]->bytes;
 		priv->port_stats.rx_chksum_good += priv->rx_ring[i]->csum_ok;
 		priv->port_stats.rx_chksum_none += priv->rx_ring[i]->csum_none;
 		priv->port_stats.rx_chksum_complete += priv->rx_ring[i]->csum_complete;
 	}
 	stats->tx_packets = 0;
 	stats->tx_bytes = 0;
 	priv->port_stats.tx_chksum_offload = 0;
 	priv->port_stats.queue_stopped = 0;
 	priv->port_stats.wake_queue = 0;
 	priv->port_stats.tso_packets = 0;
 	priv->port_stats.xmit_more = 0;

 	for (i = 0; i < priv->tx_ring_num; i++) {
 		const struct mlx4_en_tx_ring *ring = priv->tx_ring[i];

 		stats->tx_packets += ring->packets;
 		stats->tx_bytes += ring->bytes;
 		priv->port_stats.tx_chksum_offload += ring->tx_csum;
 		priv->port_stats.queue_stopped     += ring->queue_stopped;
 		priv->port_stats.wake_queue        += ring->wake_queue;
 		priv->port_stats.tso_packets       += ring->tso_packets;
 		priv->port_stats.xmit_more         += ring->xmit_more;
 	}

 	/* net device stats */
 	stats->rx_errors = be64_to_cpu(mlx4_en_stats->PCS) +
 			   be32_to_cpu(mlx4_en_stats->RJBBR) +
 			   be32_to_cpu(mlx4_en_stats->RCRC) +
 			   be32_to_cpu(mlx4_en_stats->RRUNT) +
 			   be64_to_cpu(mlx4_en_stats->RInRangeLengthErr) +
 			   be64_to_cpu(mlx4_en_stats->ROutRangeLengthErr) +
 			   be32_to_cpu(mlx4_en_stats->RSHORT) +
 			   en_stats_adder(&mlx4_en_stats->RGIANT_prio_0,
 					  &mlx4_en_stats->RGIANT_prio_1,
 					  NUM_PRIORITIES);
 	stats->tx_errors = en_stats_adder(&mlx4_en_stats->TGIANT_prio_0,
 					  &mlx4_en_stats->TGIANT_prio_1,
 					  NUM_PRIORITIES);
 	stats->multicast = en_stats_adder(&mlx4_en_stats->MCAST_prio_0,
 					  &mlx4_en_stats->MCAST_prio_1,
 					  NUM_PRIORITIES);
 	stats->collisions = 0;
 	stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP);
 	stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
 	stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
 	stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
 	stats->rx_frame_errors = 0;
 	stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
 	stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
 	stats->tx_aborted_errors = 0;
 	stats->tx_carrier_errors = 0;
 	stats->tx_fifo_errors = 0;
 	stats->tx_heartbeat_errors = 0;
 	stats->tx_window_errors = 0;
 	stats->tx_dropped = be32_to_cpu(mlx4_en_stats->TDROP);

 	/* RX stats */
 	priv->pkstats.rx_multicast_packets = stats->multicast;
 	priv->pkstats.rx_broadcast_packets =
 			en_stats_adder(&mlx4_en_stats->RBCAST_prio_0,
 				       &mlx4_en_stats->RBCAST_prio_1,
 				       NUM_PRIORITIES);
 	priv->pkstats.rx_jabbers = be32_to_cpu(mlx4_en_stats->RJBBR);
 	priv->pkstats.rx_in_range_length_error =
 		be64_to_cpu(mlx4_en_stats->RInRangeLengthErr);
 	priv->pkstats.rx_out_range_length_error =
 		be64_to_cpu(mlx4_en_stats->ROutRangeLengthErr);

 	/* Tx stats */
 	priv->pkstats.tx_multicast_packets =
 		en_stats_adder(&mlx4_en_stats->TMCAST_prio_0,
 			       &mlx4_en_stats->TMCAST_prio_1,
 			       NUM_PRIORITIES);
 	priv->pkstats.tx_broadcast_packets =
 		en_stats_adder(&mlx4_en_stats->TBCAST_prio_0,
 			       &mlx4_en_stats->TBCAST_prio_1,
 			       NUM_PRIORITIES);

 	priv->pkstats.rx_prio[0][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_0);
 	priv->pkstats.rx_prio[0][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_0);
 	priv->pkstats.rx_prio[1][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_1);
 	priv->pkstats.rx_prio[1][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_1);
 	priv->pkstats.rx_prio[2][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_2);
 	priv->pkstats.rx_prio[2][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_2);
 	priv->pkstats.rx_prio[3][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_3);
 	priv->pkstats.rx_prio[3][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_3);
 	priv->pkstats.rx_prio[4][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_4);
 	priv->pkstats.rx_prio[4][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_4);
 	priv->pkstats.rx_prio[5][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_5);
 	priv->pkstats.rx_prio[5][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_5);
 	priv->pkstats.rx_prio[6][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_6);
 	priv->pkstats.rx_prio[6][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_6);
 	priv->pkstats.rx_prio[7][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_7);
 	priv->pkstats.rx_prio[7][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_7);
 	priv->pkstats.rx_prio[8][0] = be64_to_cpu(mlx4_en_stats->RTOT_novlan);
 	priv->pkstats.rx_prio[8][1] = be64_to_cpu(mlx4_en_stats->ROCT_novlan);
 	priv->pkstats.tx_prio[0][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_0);
 	priv->pkstats.tx_prio[0][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_0);
 	priv->pkstats.tx_prio[1][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_1);
 	priv->pkstats.tx_prio[1][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_1);
 	priv->pkstats.tx_prio[2][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_2);
 	priv->pkstats.tx_prio[2][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_2);
 	priv->pkstats.tx_prio[3][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_3);
 	priv->pkstats.tx_prio[3][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_3);
 	priv->pkstats.tx_prio[4][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_4);
 	priv->pkstats.tx_prio[4][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_4);
 	priv->pkstats.tx_prio[5][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_5);
 	priv->pkstats.tx_prio[5][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_5);
 	priv->pkstats.tx_prio[6][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_6);
 	priv->pkstats.tx_prio[6][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_6);
 	priv->pkstats.tx_prio[7][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_7);
 	priv->pkstats.tx_prio[7][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_7);
 	priv->pkstats.tx_prio[8][0] = be64_to_cpu(mlx4_en_stats->TTOT_novlan);
 	priv->pkstats.tx_prio[8][1] = be64_to_cpu(mlx4_en_stats->TOCT_novlan);

 	spin_unlock_bh(&priv->stats_lock);

 	/* 0xffs indicates invalid value */
 	memset(mailbox->buf, 0xff, sizeof(*flowstats) * MLX4_NUM_PRIORITIES);

 	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN) {
 		memset(mailbox->buf, 0,
 		       sizeof(*flowstats) * MLX4_NUM_PRIORITIES);
 		err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma,
 				   in_mod | MLX4_DUMP_ETH_STATS_FLOW_CONTROL,
 				   0, MLX4_CMD_DUMP_ETH_STATS,
 				   MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
 		if (err)
 			goto out;
 	}

 	flowstats = mailbox->buf;

 	spin_lock_bh(&priv->stats_lock);

 	for (i = 0; i < MLX4_NUM_PRIORITIES; i++)	{
 		priv->rx_priority_flowstats[i].rx_pause =
 			be64_to_cpu(flowstats[i].rx_pause);
 		priv->rx_priority_flowstats[i].rx_pause_duration =
 			be64_to_cpu(flowstats[i].rx_pause_duration);
 		priv->rx_priority_flowstats[i].rx_pause_transition =
 			be64_to_cpu(flowstats[i].rx_pause_transition);
 		priv->tx_priority_flowstats[i].tx_pause =
 			be64_to_cpu(flowstats[i].tx_pause);
 		priv->tx_priority_flowstats[i].tx_pause_duration =
 			be64_to_cpu(flowstats[i].tx_pause_duration);
 		priv->tx_priority_flowstats[i].tx_pause_transition =
 			be64_to_cpu(flowstats[i].tx_pause_transition);
 	}

 	/* if pfc is not in use, all priorities counters have the same value */
 	priv->rx_flowstats.rx_pause =
 		be64_to_cpu(flowstats[0].rx_pause);
 	priv->rx_flowstats.rx_pause_duration =
 		be64_to_cpu(flowstats[0].rx_pause_duration);
 	priv->rx_flowstats.rx_pause_transition =
 		be64_to_cpu(flowstats[0].rx_pause_transition);
 	priv->tx_flowstats.tx_pause =
 		be64_to_cpu(flowstats[0].tx_pause);
 	priv->tx_flowstats.tx_pause_duration =
 		be64_to_cpu(flowstats[0].tx_pause_duration);
 	priv->tx_flowstats.tx_pause_transition =
 		be64_to_cpu(flowstats[0].tx_pause_transition);

 	spin_unlock_bh(&priv->stats_lock);

 out:
 	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 	return err;
 }
	/*
	* 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/if_vlan.h>

	#include <linux/mlx4/device.h>
	#include <linux/mlx4/cmd.h>

	#include "en_port.h"
	#include "mlx4_en.h"


	int mlx4_SET_VLAN_FLTR(struct mlx4_dev dev, struct mlx4_en_priv priv)
	{
	struct mlx4_cmd_mailbox *mailbox;
	struct mlx4_set_vlan_fltr_mbox *filter;
	int i;
	int j;
	int index = 0;
	u32 entry;
	int err = 0;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox))
	return PTR_ERR(mailbox);

	filter = mailbox->buf;
	for (i = VLAN_FLTR_SIZE - 1; i >= 0; i--) {
	entry = 0;
	for (j = 0; j < 32; j++)
	if (test_bit(index++, priv->active_vlans))
	entry \|= 1 << j;
	filter->entry[i] = cpu_to_be32(entry);
	}
	err = mlx4_cmd(dev, mailbox->dma, priv->port, 0, MLX4_CMD_SET_VLAN_FLTR,
	MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
	mlx4_free_cmd_mailbox(dev, mailbox);
	return err;
	}

	int mlx4_en_QUERY_PORT(struct mlx4_en_dev *mdev, u8 port)
	{
	struct mlx4_en_query_port_context *qport_context;
	struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
	struct mlx4_en_port_state *state = &priv->port_state;
	struct mlx4_cmd_mailbox *mailbox;
	int err;

	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
	if (IS_ERR(mailbox))
	return PTR_ERR(mailbox);
	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
	MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
	MLX4_CMD_WRAPPED);
	if (err)
	goto out;
	qport_context = mailbox->buf;

	/* This command is always accessed from Ethtool context
	* already synchronized, no need in locking */
	state->link_state = !!(qport_context->link_up & MLX4_EN_LINK_UP_MASK);
	switch (qport_context->link_speed & MLX4_EN_SPEED_MASK) {
	case MLX4_EN_100M_SPEED:
	state->link_speed = SPEED_100;
	break;
	case MLX4_EN_1G_SPEED:
	state->link_speed = SPEED_1000;
	break;
	case MLX4_EN_10G_SPEED_XAUI:
	case MLX4_EN_10G_SPEED_XFI:
	state->link_speed = SPEED_10000;
	break;
	case MLX4_EN_20G_SPEED:
	state->link_speed = SPEED_20000;
	break;
	case MLX4_EN_40G_SPEED:
	state->link_speed = SPEED_40000;
	break;
	case MLX4_EN_56G_SPEED:
	state->link_speed = SPEED_56000;
	break;
	default:
	state->link_speed = -1;
	break;
	}

	state->transceiver = qport_context->transceiver;

	state->flags = 0; /* Reset and recalculate the port flags */
	state->flags \|= (qport_context->link_up & MLX4_EN_ANC_MASK) ?
	MLX4_EN_PORT_ANC : 0;
	state->flags \|= (qport_context->autoneg & MLX4_EN_AUTONEG_MASK) ?
	MLX4_EN_PORT_ANE : 0;

	out:
	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
	return err;
	}

	/* Each counter set is located in struct mlx4_en_stat_out_mbox
	* with a const offset between its prio components.
	* This function runs over a counter set and sum all of it's prio components.
	*/
	static unsigned long en_stats_adder(__be64 start, __be64 next, int num)
	{
	__be64 *curr = start;
	unsigned long ret = 0;
	int i;
	int offset = next - start;

	for (i = 0; i < num; i++) {
	ret += be64_to_cpu(*curr);
	curr += offset;
	}

	return ret;
	}

	int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
	{
	struct mlx4_en_stat_out_mbox *mlx4_en_stats;
	struct mlx4_en_stat_out_flow_control_mbox *flowstats;
	struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
	struct net_device_stats *stats = &priv->stats;
	struct mlx4_cmd_mailbox *mailbox;
	u64 in_mod = reset << 8 \| port;
	int err;
	int i;

	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
	if (IS_ERR(mailbox))
	return PTR_ERR(mailbox);
	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, in_mod, 0,
	MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B,
	MLX4_CMD_WRAPPED);
	if (err)
	goto out;

	mlx4_en_stats = mailbox->buf;

	spin_lock_bh(&priv->stats_lock);

	stats->rx_packets = 0;
	stats->rx_bytes = 0;
	priv->port_stats.rx_chksum_good = 0;
	priv->port_stats.rx_chksum_none = 0;
	priv->port_stats.rx_chksum_complete = 0;
	for (i = 0; i < priv->rx_ring_num; i++) {
	stats->rx_packets += priv->rx_ring[i]->packets;
	stats->rx_bytes += priv->rx_ring[i]->bytes;
	priv->port_stats.rx_chksum_good += priv->rx_ring[i]->csum_ok;
	priv->port_stats.rx_chksum_none += priv->rx_ring[i]->csum_none;
	priv->port_stats.rx_chksum_complete += priv->rx_ring[i]->csum_complete;
	}
	stats->tx_packets = 0;
	stats->tx_bytes = 0;
	priv->port_stats.tx_chksum_offload = 0;
	priv->port_stats.queue_stopped = 0;
	priv->port_stats.wake_queue = 0;
	priv->port_stats.tso_packets = 0;
	priv->port_stats.xmit_more = 0;

	for (i = 0; i < priv->tx_ring_num; i++) {
	const struct mlx4_en_tx_ring *ring = priv->tx_ring[i];

	stats->tx_packets += ring->packets;
	stats->tx_bytes += ring->bytes;
	priv->port_stats.tx_chksum_offload += ring->tx_csum;
	priv->port_stats.queue_stopped += ring->queue_stopped;
	priv->port_stats.wake_queue += ring->wake_queue;
	priv->port_stats.tso_packets += ring->tso_packets;
	priv->port_stats.xmit_more += ring->xmit_more;
	}

	/* net device stats */
	stats->rx_errors = be64_to_cpu(mlx4_en_stats->PCS) +
	be32_to_cpu(mlx4_en_stats->RJBBR) +
	be32_to_cpu(mlx4_en_stats->RCRC) +
	be32_to_cpu(mlx4_en_stats->RRUNT) +
	be64_to_cpu(mlx4_en_stats->RInRangeLengthErr) +
	be64_to_cpu(mlx4_en_stats->ROutRangeLengthErr) +
	be32_to_cpu(mlx4_en_stats->RSHORT) +
	en_stats_adder(&mlx4_en_stats->RGIANT_prio_0,
	&mlx4_en_stats->RGIANT_prio_1,
	NUM_PRIORITIES);
	stats->tx_errors = en_stats_adder(&mlx4_en_stats->TGIANT_prio_0,
	&mlx4_en_stats->TGIANT_prio_1,
	NUM_PRIORITIES);
	stats->multicast = en_stats_adder(&mlx4_en_stats->MCAST_prio_0,
	&mlx4_en_stats->MCAST_prio_1,
	NUM_PRIORITIES);
	stats->collisions = 0;
	stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP);
	stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
	stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
	stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
	stats->rx_frame_errors = 0;
	stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
	stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
	stats->tx_aborted_errors = 0;
	stats->tx_carrier_errors = 0;
	stats->tx_fifo_errors = 0;
	stats->tx_heartbeat_errors = 0;
	stats->tx_window_errors = 0;
	stats->tx_dropped = be32_to_cpu(mlx4_en_stats->TDROP);

	/* RX stats */
	priv->pkstats.rx_multicast_packets = stats->multicast;
	priv->pkstats.rx_broadcast_packets =
	en_stats_adder(&mlx4_en_stats->RBCAST_prio_0,
	&mlx4_en_stats->RBCAST_prio_1,
	NUM_PRIORITIES);
	priv->pkstats.rx_jabbers = be32_to_cpu(mlx4_en_stats->RJBBR);
	priv->pkstats.rx_in_range_length_error =
	be64_to_cpu(mlx4_en_stats->RInRangeLengthErr);
	priv->pkstats.rx_out_range_length_error =
	be64_to_cpu(mlx4_en_stats->ROutRangeLengthErr);

	/* Tx stats */
	priv->pkstats.tx_multicast_packets =
	en_stats_adder(&mlx4_en_stats->TMCAST_prio_0,
	&mlx4_en_stats->TMCAST_prio_1,
	NUM_PRIORITIES);
	priv->pkstats.tx_broadcast_packets =
	en_stats_adder(&mlx4_en_stats->TBCAST_prio_0,
	&mlx4_en_stats->TBCAST_prio_1,
	NUM_PRIORITIES);

	priv->pkstats.rx_prio[0][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_0);
	priv->pkstats.rx_prio[0][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_0);
	priv->pkstats.rx_prio[1][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_1);
	priv->pkstats.rx_prio[1][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_1);
	priv->pkstats.rx_prio[2][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_2);
	priv->pkstats.rx_prio[2][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_2);
	priv->pkstats.rx_prio[3][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_3);
	priv->pkstats.rx_prio[3][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_3);
	priv->pkstats.rx_prio[4][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_4);
	priv->pkstats.rx_prio[4][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_4);
	priv->pkstats.rx_prio[5][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_5);
	priv->pkstats.rx_prio[5][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_5);
	priv->pkstats.rx_prio[6][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_6);
	priv->pkstats.rx_prio[6][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_6);
	priv->pkstats.rx_prio[7][0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_7);
	priv->pkstats.rx_prio[7][1] = be64_to_cpu(mlx4_en_stats->ROCT_prio_7);
	priv->pkstats.rx_prio[8][0] = be64_to_cpu(mlx4_en_stats->RTOT_novlan);
	priv->pkstats.rx_prio[8][1] = be64_to_cpu(mlx4_en_stats->ROCT_novlan);
	priv->pkstats.tx_prio[0][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_0);
	priv->pkstats.tx_prio[0][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_0);
	priv->pkstats.tx_prio[1][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_1);
	priv->pkstats.tx_prio[1][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_1);
	priv->pkstats.tx_prio[2][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_2);
	priv->pkstats.tx_prio[2][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_2);
	priv->pkstats.tx_prio[3][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_3);
	priv->pkstats.tx_prio[3][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_3);
	priv->pkstats.tx_prio[4][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_4);
	priv->pkstats.tx_prio[4][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_4);
	priv->pkstats.tx_prio[5][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_5);
	priv->pkstats.tx_prio[5][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_5);
	priv->pkstats.tx_prio[6][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_6);
	priv->pkstats.tx_prio[6][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_6);
	priv->pkstats.tx_prio[7][0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_7);
	priv->pkstats.tx_prio[7][1] = be64_to_cpu(mlx4_en_stats->TOCT_prio_7);
	priv->pkstats.tx_prio[8][0] = be64_to_cpu(mlx4_en_stats->TTOT_novlan);
	priv->pkstats.tx_prio[8][1] = be64_to_cpu(mlx4_en_stats->TOCT_novlan);

	spin_unlock_bh(&priv->stats_lock);

	/* 0xffs indicates invalid value */
	memset(mailbox->buf, 0xff, sizeof(flowstats) MLX4_NUM_PRIORITIES);

	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN) {
	memset(mailbox->buf, 0,
	sizeof(flowstats) MLX4_NUM_PRIORITIES);
	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma,
	in_mod \| MLX4_DUMP_ETH_STATS_FLOW_CONTROL,
	0, MLX4_CMD_DUMP_ETH_STATS,
	MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
	if (err)
	goto out;
	}

	flowstats = mailbox->buf;

	spin_lock_bh(&priv->stats_lock);

	for (i = 0; i < MLX4_NUM_PRIORITIES; i++) {
	priv->rx_priority_flowstats[i].rx_pause =
	be64_to_cpu(flowstats[i].rx_pause);
	priv->rx_priority_flowstats[i].rx_pause_duration =
	be64_to_cpu(flowstats[i].rx_pause_duration);
	priv->rx_priority_flowstats[i].rx_pause_transition =
	be64_to_cpu(flowstats[i].rx_pause_transition);
	priv->tx_priority_flowstats[i].tx_pause =
	be64_to_cpu(flowstats[i].tx_pause);
	priv->tx_priority_flowstats[i].tx_pause_duration =
	be64_to_cpu(flowstats[i].tx_pause_duration);
	priv->tx_priority_flowstats[i].tx_pause_transition =
	be64_to_cpu(flowstats[i].tx_pause_transition);
	}

	/* if pfc is not in use, all priorities counters have the same value */
	priv->rx_flowstats.rx_pause =
	be64_to_cpu(flowstats[0].rx_pause);
	priv->rx_flowstats.rx_pause_duration =
	be64_to_cpu(flowstats[0].rx_pause_duration);
	priv->rx_flowstats.rx_pause_transition =
	be64_to_cpu(flowstats[0].rx_pause_transition);
	priv->tx_flowstats.tx_pause =
	be64_to_cpu(flowstats[0].tx_pause);
	priv->tx_flowstats.tx_pause_duration =
	be64_to_cpu(flowstats[0].tx_pause_duration);
	priv->tx_flowstats.tx_pause_transition =
	be64_to_cpu(flowstats[0].tx_pause_transition);

	spin_unlock_bh(&priv->stats_lock);

	out:
	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
	return err;
	}