mlx4: Move the Mellanox driver

Moves the Mellanox driver into drivers/net/ethernet/mellanox/ and
make the necessary Kconfig and Makefile changes.

CC: Roland Dreier <roland@kernel.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1166 deletions

diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c
deleted file mode 100644
index 4b0f32e568f8..000000000000
--- a/drivers/net/mlx4/en_netdev.c
+++ /dev/null
@@ -1,1166 +0,0 @@
-/*
- * 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/etherdevice.h>
-#include <linux/tcp.h>
-#include <linux/if_vlan.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-
-#include <linux/mlx4/driver.h>
-#include <linux/mlx4/device.h>
-#include <linux/mlx4/cmd.h>
-#include <linux/mlx4/cq.h>
-
-#include "mlx4_en.h"
-#include "en_port.h"
-
-static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int err;
-	int idx;
-
-	en_dbg(HW, priv, "adding VLAN:%d\n", vid);
-
-	set_bit(vid, priv->active_vlans);
-
-	/* Add VID to port VLAN filter */
-	mutex_lock(&mdev->state_lock);
-	if (mdev->device_up && priv->port_up) {
-		err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
-		if (err)
-			en_err(priv, "Failed configuring VLAN filter\n");
-	}
-	if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
-		en_err(priv, "failed adding vlan %d\n", vid);
-	mutex_unlock(&mdev->state_lock);
-
-}
-
-static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int err;
-	int idx;
-
-	en_dbg(HW, priv, "Killing VID:%d\n", vid);
-
-	clear_bit(vid, priv->active_vlans);
-
-	/* Remove VID from port VLAN filter */
-	mutex_lock(&mdev->state_lock);
-	if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
-		mlx4_unregister_vlan(mdev->dev, priv->port, idx);
-	else
-		en_err(priv, "could not find vid %d in cache\n", vid);
-
-	if (mdev->device_up && priv->port_up) {
-		err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
-		if (err)
-			en_err(priv, "Failed configuring VLAN filter\n");
-	}
-	mutex_unlock(&mdev->state_lock);
-}
-
-u64 mlx4_en_mac_to_u64(u8 *addr)
-{
-	u64 mac = 0;
-	int i;
-
-	for (i = 0; i < ETH_ALEN; i++) {
-		mac <<= 8;
-		mac |= addr[i];
-	}
-	return mac;
-}
-
-static int mlx4_en_set_mac(struct net_device *dev, void *addr)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct sockaddr *saddr = addr;
-
-	if (!is_valid_ether_addr(saddr->sa_data))
-		return -EADDRNOTAVAIL;
-
-	memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
-	priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
-	queue_work(mdev->workqueue, &priv->mac_task);
-	return 0;
-}
-
-static void mlx4_en_do_set_mac(struct work_struct *work)
-{
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 mac_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int err = 0;
-
-	mutex_lock(&mdev->state_lock);
-	if (priv->port_up) {
-		/* Remove old MAC and insert the new one */
-		err = mlx4_replace_mac(mdev->dev, priv->port,
-				       priv->base_qpn, priv->mac, 0);
-		if (err)
-			en_err(priv, "Failed changing HW MAC address\n");
-	} else
-		en_dbg(HW, priv, "Port is down while "
-				 "registering mac, exiting...\n");
-
-	mutex_unlock(&mdev->state_lock);
-}
-
-static void mlx4_en_clear_list(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-
-	kfree(priv->mc_addrs);
-	priv->mc_addrs_cnt = 0;
-}
-
-static void mlx4_en_cache_mclist(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct netdev_hw_addr *ha;
-	char *mc_addrs;
-	int mc_addrs_cnt = netdev_mc_count(dev);
-	int i;
-
-	mc_addrs = kmalloc(mc_addrs_cnt * ETH_ALEN, GFP_ATOMIC);
-	if (!mc_addrs) {
-		en_err(priv, "failed to allocate multicast list\n");
-		return;
-	}
-	i = 0;
-	netdev_for_each_mc_addr(ha, dev)
-		memcpy(mc_addrs + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
-	priv->mc_addrs = mc_addrs;
-	priv->mc_addrs_cnt = mc_addrs_cnt;
-}
-
-
-static void mlx4_en_set_multicast(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-
-	if (!priv->port_up)
-		return;
-
-	queue_work(priv->mdev->workqueue, &priv->mcast_task);
-}
-
-static void mlx4_en_do_set_multicast(struct work_struct *work)
-{
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 mcast_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct net_device *dev = priv->dev;
-	u64 mcast_addr = 0;
-	u8 mc_list[16] = {0};
-	int err;
-
-	mutex_lock(&mdev->state_lock);
-	if (!mdev->device_up) {
-		en_dbg(HW, priv, "Card is not up, "
-				 "ignoring multicast change.\n");
-		goto out;
-	}
-	if (!priv->port_up) {
-		en_dbg(HW, priv, "Port is down, "
-				 "ignoring  multicast change.\n");
-		goto out;
-	}
-
-	/*
-	 * Promsicuous mode: disable all filters
-	 */
-
-	if (dev->flags & IFF_PROMISC) {
-		if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
-			if (netif_msg_rx_status(priv))
-				en_warn(priv, "Entering promiscuous mode\n");
-			priv->flags |= MLX4_EN_FLAG_PROMISC;
-
-			/* Enable promiscouos mode */
-			if (!(mdev->dev->caps.flags &
-						MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
-				err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
-							     priv->base_qpn, 1);
-			else
-				err = mlx4_unicast_promisc_add(mdev->dev, priv->base_qpn,
-							       priv->port);
-			if (err)
-				en_err(priv, "Failed enabling "
-					     "promiscuous mode\n");
-
-			/* Disable port multicast filter (unconditionally) */
-			err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
-						  0, MLX4_MCAST_DISABLE);
-			if (err)
-				en_err(priv, "Failed disabling "
-					     "multicast filter\n");
-
-			/* Add the default qp number as multicast promisc */
-			if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
-				err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
-								 priv->port);
-				if (err)
-					en_err(priv, "Failed entering multicast promisc mode\n");
-				priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
-			}
-
-			/* Disable port VLAN filter */
-			err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
-			if (err)
-				en_err(priv, "Failed disabling VLAN filter\n");
-		}
-		goto out;
-	}
-
-	/*
-	 * Not in promiscuous mode
-	 */
-
-	if (priv->flags & MLX4_EN_FLAG_PROMISC) {
-		if (netif_msg_rx_status(priv))
-			en_warn(priv, "Leaving promiscuous mode\n");
-		priv->flags &= ~MLX4_EN_FLAG_PROMISC;
-
-		/* Disable promiscouos mode */
-		if (!(mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
-			err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
-						     priv->base_qpn, 0);
-		else
-			err = mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
-							  priv->port);
-		if (err)
-			en_err(priv, "Failed disabling promiscuous mode\n");
-
-		/* Disable Multicast promisc */
-		if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
-			err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
-							    priv->port);
-			if (err)
-				en_err(priv, "Failed disabling multicast promiscuous mode\n");
-			priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
-		}
-
-		/* Enable port VLAN filter */
-		err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
-		if (err)
-			en_err(priv, "Failed enabling VLAN filter\n");
-	}
-
-	/* Enable/disable the multicast filter according to IFF_ALLMULTI */
-	if (dev->flags & IFF_ALLMULTI) {
-		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
-					  0, MLX4_MCAST_DISABLE);
-		if (err)
-			en_err(priv, "Failed disabling multicast filter\n");
-
-		/* Add the default qp number as multicast promisc */
-		if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
-			err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
-							 priv->port);
-			if (err)
-				en_err(priv, "Failed entering multicast promisc mode\n");
-			priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
-		}
-	} else {
-		int i;
-		/* Disable Multicast promisc */
-		if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
-			err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
-							    priv->port);
-			if (err)
-				en_err(priv, "Failed disabling multicast promiscuous mode\n");
-			priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
-		}
-
-		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
-					  0, MLX4_MCAST_DISABLE);
-		if (err)
-			en_err(priv, "Failed disabling multicast filter\n");
-
-		/* Detach our qp from all the multicast addresses */
-		for (i = 0; i < priv->mc_addrs_cnt; i++) {
-			memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
-			mc_list[5] = priv->port;
-			mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
-					      mc_list, MLX4_PROT_ETH);
-		}
-		/* Flush mcast filter and init it with broadcast address */
-		mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
-				    1, MLX4_MCAST_CONFIG);
-
-		/* Update multicast list - we cache all addresses so they won't
-		 * change while HW is updated holding the command semaphor */
-		netif_tx_lock_bh(dev);
-		mlx4_en_cache_mclist(dev);
-		netif_tx_unlock_bh(dev);
-		for (i = 0; i < priv->mc_addrs_cnt; i++) {
-			mcast_addr =
-			      mlx4_en_mac_to_u64(priv->mc_addrs + i * ETH_ALEN);
-			memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
-			mc_list[5] = priv->port;
-			mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp,
-					      mc_list, 0, MLX4_PROT_ETH);
-			mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
-					    mcast_addr, 0, MLX4_MCAST_CONFIG);
-		}
-		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
-					  0, MLX4_MCAST_ENABLE);
-		if (err)
-			en_err(priv, "Failed enabling multicast filter\n");
-	}
-out:
-	mutex_unlock(&mdev->state_lock);
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void mlx4_en_netpoll(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_cq *cq;
-	unsigned long flags;
-	int i;
-
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		cq = &priv->rx_cq[i];
-		spin_lock_irqsave(&cq->lock, flags);
-		napi_synchronize(&cq->napi);
-		mlx4_en_process_rx_cq(dev, cq, 0);
-		spin_unlock_irqrestore(&cq->lock, flags);
-	}
-}
-#endif
-
-static void mlx4_en_tx_timeout(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-
-	if (netif_msg_timer(priv))
-		en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
-
-	priv->port_stats.tx_timeout++;
-	en_dbg(DRV, priv, "Scheduling watchdog\n");
-	queue_work(mdev->workqueue, &priv->watchdog_task);
-}
-
-
-static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-
-	spin_lock_bh(&priv->stats_lock);
-	memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
-	spin_unlock_bh(&priv->stats_lock);
-
-	return &priv->ret_stats;
-}
-
-static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
-{
-	struct mlx4_en_cq *cq;
-	int i;
-
-	/* If we haven't received a specific coalescing setting
-	 * (module param), we set the moderation parameters as follows:
-	 * - moder_cnt is set to the number of mtu sized packets to
-	 *   satisfy our coelsing target.
-	 * - moder_time is set to a fixed value.
-	 */
-	priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
-	priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
-	en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
-			   "rx_frames:%d rx_usecs:%d\n",
-		 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
-
-	/* Setup cq moderation params */
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		cq = &priv->rx_cq[i];
-		cq->moder_cnt = priv->rx_frames;
-		cq->moder_time = priv->rx_usecs;
-	}
-
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		cq = &priv->tx_cq[i];
-		cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
-		cq->moder_time = MLX4_EN_TX_COAL_TIME;
-	}
-
-	/* Reset auto-moderation params */
-	priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
-	priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
-	priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
-	priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
-	priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
-	priv->adaptive_rx_coal = 1;
-	priv->last_moder_time = MLX4_EN_AUTO_CONF;
-	priv->last_moder_jiffies = 0;
-	priv->last_moder_packets = 0;
-	priv->last_moder_tx_packets = 0;
-	priv->last_moder_bytes = 0;
-}
-
-static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
-{
-	unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
-	struct mlx4_en_cq *cq;
-	unsigned long packets;
-	unsigned long rate;
-	unsigned long avg_pkt_size;
-	unsigned long rx_packets;
-	unsigned long rx_bytes;
-	unsigned long tx_packets;
-	unsigned long tx_pkt_diff;
-	unsigned long rx_pkt_diff;
-	int moder_time;
-	int i, err;
-
-	if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
-		return;
-
-	spin_lock_bh(&priv->stats_lock);
-	rx_packets = priv->stats.rx_packets;
-	rx_bytes = priv->stats.rx_bytes;
-	tx_packets = priv->stats.tx_packets;
-	spin_unlock_bh(&priv->stats_lock);
-
-	if (!priv->last_moder_jiffies || !period)
-		goto out;
-
-	tx_pkt_diff = ((unsigned long) (tx_packets -
-					priv->last_moder_tx_packets));
-	rx_pkt_diff = ((unsigned long) (rx_packets -
-					priv->last_moder_packets));
-	packets = max(tx_pkt_diff, rx_pkt_diff);
-	rate = packets * HZ / period;
-	avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
-				 priv->last_moder_bytes)) / packets : 0;
-
-	/* Apply auto-moderation only when packet rate exceeds a rate that
-	 * it matters */
-	if (rate > MLX4_EN_RX_RATE_THRESH && avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
-		/* If tx and rx packet rates are not balanced, assume that
-		 * traffic is mainly BW bound and apply maximum moderation.
-		 * Otherwise, moderate according to packet rate */
-		if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
-		    2 * rx_pkt_diff > 3 * tx_pkt_diff) {
-			moder_time = priv->rx_usecs_high;
-		} else {
-			if (rate < priv->pkt_rate_low)
-				moder_time = priv->rx_usecs_low;
-			else if (rate > priv->pkt_rate_high)
-				moder_time = priv->rx_usecs_high;
-			else
-				moder_time = (rate - priv->pkt_rate_low) *
-					(priv->rx_usecs_high - priv->rx_usecs_low) /
-					(priv->pkt_rate_high - priv->pkt_rate_low) +
-					priv->rx_usecs_low;
-		}
-	} else {
-		moder_time = priv->rx_usecs_low;
-	}
-
-	en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
-	       tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
-
-	en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
-	       "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
-		 priv->last_moder_time, moder_time, period, packets,
-		 avg_pkt_size, rate);
-
-	if (moder_time != priv->last_moder_time) {
-		priv->last_moder_time = moder_time;
-		for (i = 0; i < priv->rx_ring_num; i++) {
-			cq = &priv->rx_cq[i];
-			cq->moder_time = moder_time;
-			err = mlx4_en_set_cq_moder(priv, cq);
-			if (err) {
-				en_err(priv, "Failed modifying moderation for cq:%d\n", i);
-				break;
-			}
-		}
-	}
-
-out:
-	priv->last_moder_packets = rx_packets;
-	priv->last_moder_tx_packets = tx_packets;
-	priv->last_moder_bytes = rx_bytes;
-	priv->last_moder_jiffies = jiffies;
-}
-
-static void mlx4_en_do_get_stats(struct work_struct *work)
-{
-	struct delayed_work *delay = to_delayed_work(work);
-	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
-						 stats_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int err;
-
-	err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
-	if (err)
-		en_dbg(HW, priv, "Could not update stats\n");
-
-	mutex_lock(&mdev->state_lock);
-	if (mdev->device_up) {
-		if (priv->port_up)
-			mlx4_en_auto_moderation(priv);
-
-		queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
-	}
-	if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
-		queue_work(mdev->workqueue, &priv->mac_task);
-		mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
-	}
-	mutex_unlock(&mdev->state_lock);
-}
-
-static void mlx4_en_linkstate(struct work_struct *work)
-{
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 linkstate_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int linkstate = priv->link_state;
-
-	mutex_lock(&mdev->state_lock);
-	/* If observable port state changed set carrier state and
-	 * report to system log */
-	if (priv->last_link_state != linkstate) {
-		if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
-			en_info(priv, "Link Down\n");
-			netif_carrier_off(priv->dev);
-		} else {
-			en_info(priv, "Link Up\n");
-			netif_carrier_on(priv->dev);
-		}
-	}
-	priv->last_link_state = linkstate;
-	mutex_unlock(&mdev->state_lock);
-}
-
-
-int mlx4_en_start_port(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct mlx4_en_cq *cq;
-	struct mlx4_en_tx_ring *tx_ring;
-	int rx_index = 0;
-	int tx_index = 0;
-	int err = 0;
-	int i;
-	int j;
-	u8 mc_list[16] = {0};
-	char name[32];
-
-	if (priv->port_up) {
-		en_dbg(DRV, priv, "start port called while port already up\n");
-		return 0;
-	}
-
-	/* Calculate Rx buf size */
-	dev->mtu = min(dev->mtu, priv->max_mtu);
-	mlx4_en_calc_rx_buf(dev);
-	en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
-
-	/* Configure rx cq's and rings */
-	err = mlx4_en_activate_rx_rings(priv);
-	if (err) {
-		en_err(priv, "Failed to activate RX rings\n");
-		return err;
-	}
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		cq = &priv->rx_cq[i];
-
-		err = mlx4_en_activate_cq(priv, cq);
-		if (err) {
-			en_err(priv, "Failed activating Rx CQ\n");
-			goto cq_err;
-		}
-		for (j = 0; j < cq->size; j++)
-			cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
-		err = mlx4_en_set_cq_moder(priv, cq);
-		if (err) {
-			en_err(priv, "Failed setting cq moderation parameters");
-			mlx4_en_deactivate_cq(priv, cq);
-			goto cq_err;
-		}
-		mlx4_en_arm_cq(priv, cq);
-		priv->rx_ring[i].cqn = cq->mcq.cqn;
-		++rx_index;
-	}
-
-	/* Set port mac number */
-	en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
-	err = mlx4_register_mac(mdev->dev, priv->port,
-				priv->mac, &priv->base_qpn, 0);
-	if (err) {
-		en_err(priv, "Failed setting port mac\n");
-		goto cq_err;
-	}
-	mdev->mac_removed[priv->port] = 0;
-
-	err = mlx4_en_config_rss_steer(priv);
-	if (err) {
-		en_err(priv, "Failed configuring rss steering\n");
-		goto mac_err;
-	}
-
-	if (mdev->dev->caps.comp_pool && !priv->tx_vector) {
-		sprintf(name , "%s-tx", priv->dev->name);
-		if (mlx4_assign_eq(mdev->dev , name, &priv->tx_vector)) {
-			mlx4_warn(mdev, "Failed Assigning an EQ to "
-					"%s_tx ,Falling back to legacy "
-					"EQ's\n", priv->dev->name);
-		}
-	}
-	/* Configure tx cq's and rings */
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		/* Configure cq */
-		cq = &priv->tx_cq[i];
-		cq->vector = priv->tx_vector;
-		err = mlx4_en_activate_cq(priv, cq);
-		if (err) {
-			en_err(priv, "Failed allocating Tx CQ\n");
-			goto tx_err;
-		}
-		err = mlx4_en_set_cq_moder(priv, cq);
-		if (err) {
-			en_err(priv, "Failed setting cq moderation parameters");
-			mlx4_en_deactivate_cq(priv, cq);
-			goto tx_err;
-		}
-		en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
-		cq->buf->wqe_index = cpu_to_be16(0xffff);
-
-		/* Configure ring */
-		tx_ring = &priv->tx_ring[i];
-		err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
-		if (err) {
-			en_err(priv, "Failed allocating Tx ring\n");
-			mlx4_en_deactivate_cq(priv, cq);
-			goto tx_err;
-		}
-		/* Set initial ownership of all Tx TXBBs to SW (1) */
-		for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
-			*((u32 *) (tx_ring->buf + j)) = 0xffffffff;
-		++tx_index;
-	}
-
-	/* Configure port */
-	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 port general configurations "
-			     "for port %d, with error %d\n", priv->port, err);
-		goto tx_err;
-	}
-	/* Set default qp number */
-	err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
-	if (err) {
-		en_err(priv, "Failed setting default qp numbers\n");
-		goto tx_err;
-	}
-
-	/* Init port */
-	en_dbg(HW, priv, "Initializing port\n");
-	err = mlx4_INIT_PORT(mdev->dev, priv->port);
-	if (err) {
-		en_err(priv, "Failed Initializing port\n");
-		goto tx_err;
-	}
-
-	/* Attach rx QP to bradcast address */
-	memset(&mc_list[10], 0xff, ETH_ALEN);
-	mc_list[5] = priv->port;
-	if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
-				  0, MLX4_PROT_ETH))
-		mlx4_warn(mdev, "Failed Attaching Broadcast\n");
-
-	/* Must redo promiscuous mode setup. */
-	priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
-
-	/* Schedule multicast task to populate multicast list */
-	queue_work(mdev->workqueue, &priv->mcast_task);
-
-	priv->port_up = true;
-	netif_tx_start_all_queues(dev);
-	return 0;
-
-tx_err:
-	while (tx_index--) {
-		mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
-		mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
-	}
-
-	mlx4_en_release_rss_steer(priv);
-mac_err:
-	mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
-cq_err:
-	while (rx_index--)
-		mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
-	for (i = 0; i < priv->rx_ring_num; i++)
-		mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
-
-	return err; /* need to close devices */
-}
-
-
-void mlx4_en_stop_port(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int i;
-	u8 mc_list[16] = {0};
-
-	if (!priv->port_up) {
-		en_dbg(DRV, priv, "stop port called while port already down\n");
-		return;
-	}
-
-	/* Synchronize with tx routine */
-	netif_tx_lock_bh(dev);
-	netif_tx_stop_all_queues(dev);
-	netif_tx_unlock_bh(dev);
-
-	/* Set port as not active */
-	priv->port_up = false;
-
-	/* Detach All multicasts */
-	memset(&mc_list[10], 0xff, ETH_ALEN);
-	mc_list[5] = priv->port;
-	mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
-			      MLX4_PROT_ETH);
-	for (i = 0; i < priv->mc_addrs_cnt; i++) {
-		memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
-		mc_list[5] = priv->port;
-		mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
-				      mc_list, MLX4_PROT_ETH);
-	}
-	mlx4_en_clear_list(dev);
-	/* Flush multicast filter */
-	mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
-
-	/* Unregister Mac address for the port */
-	mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
-	mdev->mac_removed[priv->port] = 1;
-
-	/* Free TX Rings */
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
-		mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
-	}
-	msleep(10);
-
-	for (i = 0; i < priv->tx_ring_num; i++)
-		mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
-
-	/* Free RSS qps */
-	mlx4_en_release_rss_steer(priv);
-
-	/* Free RX Rings */
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
-		while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
-			msleep(1);
-		mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
-	}
-
-	/* close port*/
-	mlx4_CLOSE_PORT(mdev->dev, priv->port);
-}
-
-static void mlx4_en_restart(struct work_struct *work)
-{
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 watchdog_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct net_device *dev = priv->dev;
-
-	en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
-
-	mutex_lock(&mdev->state_lock);
-	if (priv->port_up) {
-		mlx4_en_stop_port(dev);
-		if (mlx4_en_start_port(dev))
-			en_err(priv, "Failed restarting port %d\n", priv->port);
-	}
-	mutex_unlock(&mdev->state_lock);
-}
-
-
-static int mlx4_en_open(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int i;
-	int err = 0;
-
-	mutex_lock(&mdev->state_lock);
-
-	if (!mdev->device_up) {
-		en_err(priv, "Cannot open - device down/disabled\n");
-		err = -EBUSY;
-		goto out;
-	}
-
-	/* Reset HW statistics and performance counters */
-	if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
-		en_dbg(HW, priv, "Failed dumping statistics\n");
-
-	memset(&priv->stats, 0, sizeof(priv->stats));
-	memset(&priv->pstats, 0, sizeof(priv->pstats));
-
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		priv->tx_ring[i].bytes = 0;
-		priv->tx_ring[i].packets = 0;
-	}
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		priv->rx_ring[i].bytes = 0;
-		priv->rx_ring[i].packets = 0;
-	}
-
-	err = mlx4_en_start_port(dev);
-	if (err)
-		en_err(priv, "Failed starting port:%d\n", priv->port);
-
-out:
-	mutex_unlock(&mdev->state_lock);
-	return err;
-}
-
-
-static int mlx4_en_close(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-
-	en_dbg(IFDOWN, priv, "Close port called\n");
-
-	mutex_lock(&mdev->state_lock);
-
-	mlx4_en_stop_port(dev);
-	netif_carrier_off(dev);
-
-	mutex_unlock(&mdev->state_lock);
-	return 0;
-}
-
-void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors)
-{
-	int i;
-
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		if (priv->tx_ring[i].tx_info)
-			mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
-		if (priv->tx_cq[i].buf)
-			mlx4_en_destroy_cq(priv, &priv->tx_cq[i], reserve_vectors);
-	}
-
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		if (priv->rx_ring[i].rx_info)
-			mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
-		if (priv->rx_cq[i].buf)
-			mlx4_en_destroy_cq(priv, &priv->rx_cq[i], reserve_vectors);
-	}
-}
-
-int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
-{
-	struct mlx4_en_port_profile *prof = priv->prof;
-	int i;
-	int base_tx_qpn, err;
-
-	err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &base_tx_qpn);
-	if (err) {
-		en_err(priv, "failed reserving range for TX rings\n");
-		return err;
-	}
-
-	/* Create tx Rings */
-	for (i = 0; i < priv->tx_ring_num; i++) {
-		if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
-				      prof->tx_ring_size, i, TX))
-			goto err;
-
-		if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], base_tx_qpn + i,
-					   prof->tx_ring_size, TXBB_SIZE))
-			goto err;
-	}
-
-	/* Create rx Rings */
-	for (i = 0; i < priv->rx_ring_num; i++) {
-		if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
-				      prof->rx_ring_size, i, RX))
-			goto err;
-
-		if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
-					   prof->rx_ring_size, priv->stride))
-			goto err;
-	}
-
-	return 0;
-
-err:
-	en_err(priv, "Failed to allocate NIC resources\n");
-	mlx4_qp_release_range(priv->mdev->dev, base_tx_qpn, priv->tx_ring_num);
-	return -ENOMEM;
-}
-
-
-void mlx4_en_destroy_netdev(struct net_device *dev)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-
-	en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
-
-	/* Unregister device - this will close the port if it was up */
-	if (priv->registered)
-		unregister_netdev(dev);
-
-	if (priv->allocated)
-		mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
-
-	cancel_delayed_work(&priv->stats_task);
-	/* flush any pending task for this netdev */
-	flush_workqueue(mdev->workqueue);
-
-	/* Detach the netdev so tasks would not attempt to access it */
-	mutex_lock(&mdev->state_lock);
-	mdev->pndev[priv->port] = NULL;
-	mutex_unlock(&mdev->state_lock);
-
-	mlx4_en_free_resources(priv, false);
-	free_netdev(dev);
-}
-
-static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
-{
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	int err = 0;
-
-	en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
-		 dev->mtu, new_mtu);
-
-	if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
-		en_err(priv, "Bad MTU size:%d.\n", new_mtu);
-		return -EPERM;
-	}
-	dev->mtu = new_mtu;
-
-	if (netif_running(dev)) {
-		mutex_lock(&mdev->state_lock);
-		if (!mdev->device_up) {
-			/* NIC is probably restarting - let watchdog task reset
-			 * the port */
-			en_dbg(DRV, priv, "Change MTU called with card down!?\n");
-		} else {
-			mlx4_en_stop_port(dev);
-			err = mlx4_en_start_port(dev);
-			if (err) {
-				en_err(priv, "Failed restarting port:%d\n",
-					 priv->port);
-				queue_work(mdev->workqueue, &priv->watchdog_task);
-			}
-		}
-		mutex_unlock(&mdev->state_lock);
-	}
-	return 0;
-}
-
-static const struct net_device_ops mlx4_netdev_ops = {
-	.ndo_open		= mlx4_en_open,
-	.ndo_stop		= mlx4_en_close,
-	.ndo_start_xmit		= mlx4_en_xmit,
-	.ndo_select_queue	= mlx4_en_select_queue,
-	.ndo_get_stats		= mlx4_en_get_stats,
-	.ndo_set_multicast_list	= mlx4_en_set_multicast,
-	.ndo_set_mac_address	= mlx4_en_set_mac,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_change_mtu		= mlx4_en_change_mtu,
-	.ndo_tx_timeout		= mlx4_en_tx_timeout,
-	.ndo_vlan_rx_add_vid	= mlx4_en_vlan_rx_add_vid,
-	.ndo_vlan_rx_kill_vid	= mlx4_en_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= mlx4_en_netpoll,
-#endif
-};
-
-int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
-			struct mlx4_en_port_profile *prof)
-{
-	struct net_device *dev;
-	struct mlx4_en_priv *priv;
-	int i;
-	int err;
-
-	dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
-	    prof->tx_ring_num, prof->rx_ring_num);
-	if (dev == NULL) {
-		mlx4_err(mdev, "Net device allocation failed\n");
-		return -ENOMEM;
-	}
-
-	SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
-	dev->dev_id =  port - 1;
-
-	/*
-	 * Initialize driver private data
-	 */
-
-	priv = netdev_priv(dev);
-	memset(priv, 0, sizeof(struct mlx4_en_priv));
-	priv->dev = dev;
-	priv->mdev = mdev;
-	priv->prof = prof;
-	priv->port = port;
-	priv->port_up = false;
-	priv->flags = prof->flags;
-	priv->tx_ring_num = prof->tx_ring_num;
-	priv->rx_ring_num = prof->rx_ring_num;
-	priv->mac_index = -1;
-	priv->msg_enable = MLX4_EN_MSG_LEVEL;
-	spin_lock_init(&priv->stats_lock);
-	INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
-	INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
-	INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
-	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
-	INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
-
-	/* Query for default mac and max mtu */
-	priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
-	priv->mac = mdev->dev->caps.def_mac[priv->port];
-	if (ILLEGAL_MAC(priv->mac)) {
-		en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
-			 priv->port, priv->mac);
-		err = -EINVAL;
-		goto out;
-	}
-
-	priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
-					  DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
-	err = mlx4_en_alloc_resources(priv);
-	if (err)
-		goto out;
-
-	/* Allocate page for receive rings */
-	err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
-				MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
-	if (err) {
-		en_err(priv, "Failed to allocate page for rx qps\n");
-		goto out;
-	}
-	priv->allocated = 1;
-
-	/*
-	 * Initialize netdev entry points
-	 */
-	dev->netdev_ops = &mlx4_netdev_ops;
-	dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
-	netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
-	netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
-
-	SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
-
-	/* Set defualt MAC */
-	dev->addr_len = ETH_ALEN;
-	for (i = 0; i < ETH_ALEN; i++) {
-		dev->dev_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
-		dev->perm_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
-	}
-
-	/*
-	 * Set driver features
-	 */
-	dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
-	if (mdev->LSO_support)
-		dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
-
-	dev->vlan_features = dev->hw_features;
-
-	dev->hw_features |= NETIF_F_RXCSUM;
-	dev->features = dev->hw_features | NETIF_F_HIGHDMA |
-			NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
-			NETIF_F_HW_VLAN_FILTER;
-
-	mdev->pndev[port] = dev;
-
-	netif_carrier_off(dev);
-	err = register_netdev(dev);
-	if (err) {
-		en_err(priv, "Netdev registration failed for port %d\n", port);
-		goto out;
-	}
-
-	en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
-	en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
-
-	/* Configure port */
-	err = mlx4_SET_PORT_general(mdev->dev, priv->port,
-				    MLX4_EN_MIN_MTU,
-				    0, 0, 0, 0);
-	if (err) {
-		en_err(priv, "Failed setting port general configurations "
-		       "for port %d, with error %d\n", priv->port, err);
-		goto out;
-	}
-
-	/* Init port */
-	en_warn(priv, "Initializing port\n");
-	err = mlx4_INIT_PORT(mdev->dev, priv->port);
-	if (err) {
-		en_err(priv, "Failed Initializing port\n");
-		goto out;
-	}
-	priv->registered = 1;
-	mlx4_en_set_default_moderation(priv);
-	queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
-	return 0;
-
-out:
-	mlx4_en_destroy_netdev(dev);
-	return err;
-}
-