Merge branch 'linux-2.6'

1 files changed, 4138 insertions, 0 deletions

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
new file mode 100644
index 00000000000..f3c144d5d72
--- /dev/null
+++ b/drivers/net/igb/igb_main.c
@@ -0,0 +1,4138 @@
+/*******************************************************************************
+
+  Intel(R) Gigabit Ethernet Linux driver
+  Copyright(c) 2007 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/netdevice.h>
+#include <linux/tcp.h>
+#include <linux/ipv6.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+
+#include "igb.h"
+
+#define DRV_VERSION "1.0.8-k2"
+char igb_driver_name[] = "igb";
+char igb_driver_version[] = DRV_VERSION;
+static const char igb_driver_string[] =
+				"Intel(R) Gigabit Ethernet Network Driver";
+static const char igb_copyright[] = "Copyright (c) 2007 Intel Corporation.";
+
+
+static const struct e1000_info *igb_info_tbl[] = {
+	[board_82575] = &e1000_82575_info,
+};
+
+static struct pci_device_id igb_pci_tbl[] = {
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
+	/* required last entry */
+	{0, }
+};
+
+MODULE_DEVICE_TABLE(pci, igb_pci_tbl);
+
+void igb_reset(struct igb_adapter *);
+static int igb_setup_all_tx_resources(struct igb_adapter *);
+static int igb_setup_all_rx_resources(struct igb_adapter *);
+static void igb_free_all_tx_resources(struct igb_adapter *);
+static void igb_free_all_rx_resources(struct igb_adapter *);
+static void igb_free_tx_resources(struct igb_adapter *, struct igb_ring *);
+static void igb_free_rx_resources(struct igb_adapter *, struct igb_ring *);
+void igb_update_stats(struct igb_adapter *);
+static int igb_probe(struct pci_dev *, const struct pci_device_id *);
+static void __devexit igb_remove(struct pci_dev *pdev);
+static int igb_sw_init(struct igb_adapter *);
+static int igb_open(struct net_device *);
+static int igb_close(struct net_device *);
+static void igb_configure_tx(struct igb_adapter *);
+static void igb_configure_rx(struct igb_adapter *);
+static void igb_setup_rctl(struct igb_adapter *);
+static void igb_clean_all_tx_rings(struct igb_adapter *);
+static void igb_clean_all_rx_rings(struct igb_adapter *);
+static void igb_clean_tx_ring(struct igb_adapter *, struct igb_ring *);
+static void igb_clean_rx_ring(struct igb_adapter *, struct igb_ring *);
+static void igb_set_multi(struct net_device *);
+static void igb_update_phy_info(unsigned long);
+static void igb_watchdog(unsigned long);
+static void igb_watchdog_task(struct work_struct *);
+static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *,
+				  struct igb_ring *);
+static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *);
+static struct net_device_stats *igb_get_stats(struct net_device *);
+static int igb_change_mtu(struct net_device *, int);
+static int igb_set_mac(struct net_device *, void *);
+static irqreturn_t igb_intr(int irq, void *);
+static irqreturn_t igb_intr_msi(int irq, void *);
+static irqreturn_t igb_msix_other(int irq, void *);
+static irqreturn_t igb_msix_rx(int irq, void *);
+static irqreturn_t igb_msix_tx(int irq, void *);
+static int igb_clean_rx_ring_msix(struct napi_struct *, int);
+static bool igb_clean_tx_irq(struct igb_adapter *, struct igb_ring *);
+static int igb_clean(struct napi_struct *, int);
+static bool igb_clean_rx_irq_adv(struct igb_adapter *,
+				 struct igb_ring *, int *, int);
+static void igb_alloc_rx_buffers_adv(struct igb_adapter *,
+				     struct igb_ring *, int);
+static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
+static void igb_tx_timeout(struct net_device *);
+static void igb_reset_task(struct work_struct *);
+static void igb_vlan_rx_register(struct net_device *, struct vlan_group *);
+static void igb_vlan_rx_add_vid(struct net_device *, u16);
+static void igb_vlan_rx_kill_vid(struct net_device *, u16);
+static void igb_restore_vlan(struct igb_adapter *);
+
+static int igb_suspend(struct pci_dev *, pm_message_t);
+#ifdef CONFIG_PM
+static int igb_resume(struct pci_dev *);
+#endif
+static void igb_shutdown(struct pci_dev *);
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/* for netdump / net console */
+static void igb_netpoll(struct net_device *);
+#endif
+
+static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
+		     pci_channel_state_t);
+static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
+static void igb_io_resume(struct pci_dev *);
+
+static struct pci_error_handlers igb_err_handler = {
+	.error_detected = igb_io_error_detected,
+	.slot_reset = igb_io_slot_reset,
+	.resume = igb_io_resume,
+};
+
+
+static struct pci_driver igb_driver = {
+	.name     = igb_driver_name,
+	.id_table = igb_pci_tbl,
+	.probe    = igb_probe,
+	.remove   = __devexit_p(igb_remove),
+#ifdef CONFIG_PM
+	/* Power Managment Hooks */
+	.suspend  = igb_suspend,
+	.resume   = igb_resume,
+#endif
+	.shutdown = igb_shutdown,
+	.err_handler = &igb_err_handler
+};
+
+MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
+MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+#ifdef DEBUG
+/**
+ * igb_get_hw_dev_name - return device name string
+ * used by hardware layer to print debugging information
+ **/
+char *igb_get_hw_dev_name(struct e1000_hw *hw)
+{
+	struct igb_adapter *adapter = hw->back;
+	return adapter->netdev->name;
+}
+#endif
+
+/**
+ * igb_init_module - Driver Registration Routine
+ *
+ * igb_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init igb_init_module(void)
+{
+	int ret;
+	printk(KERN_INFO "%s - version %s\n",
+	       igb_driver_string, igb_driver_version);
+
+	printk(KERN_INFO "%s\n", igb_copyright);
+
+	ret = pci_register_driver(&igb_driver);
+	return ret;
+}
+
+module_init(igb_init_module);
+
+/**
+ * igb_exit_module - Driver Exit Cleanup Routine
+ *
+ * igb_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit igb_exit_module(void)
+{
+	pci_unregister_driver(&igb_driver);
+}
+
+module_exit(igb_exit_module);
+
+/**
+ * igb_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ *
+ * We allocate one ring per queue at run-time since we don't know the
+ * number of queues at compile-time.
+ **/
+static int igb_alloc_queues(struct igb_adapter *adapter)
+{
+	int i;
+
+	adapter->tx_ring = kcalloc(adapter->num_tx_queues,
+				   sizeof(struct igb_ring), GFP_KERNEL);
+	if (!adapter->tx_ring)
+		return -ENOMEM;
+
+	adapter->rx_ring = kcalloc(adapter->num_rx_queues,
+				   sizeof(struct igb_ring), GFP_KERNEL);
+	if (!adapter->rx_ring) {
+		kfree(adapter->tx_ring);
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *ring = &(adapter->rx_ring[i]);
+		ring->adapter = adapter;
+		ring->itr_register = E1000_ITR;
+
+		if (!ring->napi.poll)
+			netif_napi_add(adapter->netdev, &ring->napi, igb_clean,
+				       adapter->napi.weight /
+				       adapter->num_rx_queues);
+	}
+	return 0;
+}
+
+#define IGB_N0_QUEUE -1
+static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
+			      int tx_queue, int msix_vector)
+{
+	u32 msixbm = 0;
+	struct e1000_hw *hw = &adapter->hw;
+		/* The 82575 assigns vectors using a bitmask, which matches the
+		   bitmask for the EICR/EIMS/EIMC registers.  To assign one
+		   or more queues to a vector, we write the appropriate bits
+		   into the MSIXBM register for that vector. */
+		if (rx_queue > IGB_N0_QUEUE) {
+			msixbm = E1000_EICR_RX_QUEUE0 << rx_queue;
+			adapter->rx_ring[rx_queue].eims_value = msixbm;
+		}
+		if (tx_queue > IGB_N0_QUEUE) {
+			msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue;
+			adapter->tx_ring[tx_queue].eims_value =
+				  E1000_EICR_TX_QUEUE0 << tx_queue;
+		}
+		array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
+}
+
+/**
+ * igb_configure_msix - Configure MSI-X hardware
+ *
+ * igb_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void igb_configure_msix(struct igb_adapter *adapter)
+{
+	u32 tmp;
+	int i, vector = 0;
+	struct e1000_hw *hw = &adapter->hw;
+
+	adapter->eims_enable_mask = 0;
+
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		struct igb_ring *tx_ring = &adapter->tx_ring[i];
+		igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++);
+		adapter->eims_enable_mask |= tx_ring->eims_value;
+		if (tx_ring->itr_val)
+			writel(1000000000 / (tx_ring->itr_val * 256),
+			       hw->hw_addr + tx_ring->itr_register);
+		else
+			writel(1, hw->hw_addr + tx_ring->itr_register);
+	}
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *rx_ring = &adapter->rx_ring[i];
+		igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++);
+		adapter->eims_enable_mask |= rx_ring->eims_value;
+		if (rx_ring->itr_val)
+			writel(1000000000 / (rx_ring->itr_val * 256),
+			       hw->hw_addr + rx_ring->itr_register);
+		else
+			writel(1, hw->hw_addr + rx_ring->itr_register);
+	}
+
+
+	/* set vector for other causes, i.e. link changes */
+		array_wr32(E1000_MSIXBM(0), vector++,
+				      E1000_EIMS_OTHER);
+
+		/* disable IAM for ICR interrupt bits */
+		wr32(E1000_IAM, 0);
+
+		tmp = rd32(E1000_CTRL_EXT);
+		/* enable MSI-X PBA support*/
+		tmp |= E1000_CTRL_EXT_PBA_CLR;
+
+		/* Auto-Mask interrupts upon ICR read. */
+		tmp |= E1000_CTRL_EXT_EIAME;
+		tmp |= E1000_CTRL_EXT_IRCA;
+
+		wr32(E1000_CTRL_EXT, tmp);
+		adapter->eims_enable_mask |= E1000_EIMS_OTHER;
+
+	wrfl();
+}
+
+/**
+ * igb_request_msix - Initialize MSI-X interrupts
+ *
+ * igb_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int igb_request_msix(struct igb_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int i, err = 0, vector = 0;
+
+	vector = 0;
+
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		struct igb_ring *ring = &(adapter->tx_ring[i]);
+		sprintf(ring->name, "%s-tx%d", netdev->name, i);
+		err = request_irq(adapter->msix_entries[vector].vector,
+				  &igb_msix_tx, 0, ring->name,
+				  &(adapter->tx_ring[i]));
+		if (err)
+			goto out;
+		ring->itr_register = E1000_EITR(0) + (vector << 2);
+		ring->itr_val = adapter->itr;
+		vector++;
+	}
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *ring = &(adapter->rx_ring[i]);
+		if (strlen(netdev->name) < (IFNAMSIZ - 5))
+			sprintf(ring->name, "%s-rx%d", netdev->name, i);
+		else
+			memcpy(ring->name, netdev->name, IFNAMSIZ);
+		err = request_irq(adapter->msix_entries[vector].vector,
+				  &igb_msix_rx, 0, ring->name,
+				  &(adapter->rx_ring[i]));
+		if (err)
+			goto out;
+		ring->itr_register = E1000_EITR(0) + (vector << 2);
+		ring->itr_val = adapter->itr;
+		vector++;
+	}
+
+	err = request_irq(adapter->msix_entries[vector].vector,
+			  &igb_msix_other, 0, netdev->name, netdev);
+	if (err)
+		goto out;
+
+	adapter->napi.poll = igb_clean_rx_ring_msix;
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		adapter->rx_ring[i].napi.poll = adapter->napi.poll;
+	igb_configure_msix(adapter);
+	return 0;
+out:
+	return err;
+}
+
+static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
+{
+	if (adapter->msix_entries) {
+		pci_disable_msix(adapter->pdev);
+		kfree(adapter->msix_entries);
+		adapter->msix_entries = NULL;
+	} else if (adapter->msi_enabled)
+		pci_disable_msi(adapter->pdev);
+	return;
+}
+
+
+/**
+ * igb_set_interrupt_capability - set MSI or MSI-X if supported
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static void igb_set_interrupt_capability(struct igb_adapter *adapter)
+{
+	int err;
+	int numvecs, i;
+
+	numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1;
+	adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry),
+					GFP_KERNEL);
+	if (!adapter->msix_entries)
+		goto msi_only;
+
+	for (i = 0; i < numvecs; i++)
+		adapter->msix_entries[i].entry = i;
+
+	err = pci_enable_msix(adapter->pdev,
+			      adapter->msix_entries,
+			      numvecs);
+	if (err == 0)
+		return;
+
+	igb_reset_interrupt_capability(adapter);
+
+	/* If we can't do MSI-X, try MSI */
+msi_only:
+	adapter->num_rx_queues = 1;
+	if (!pci_enable_msi(adapter->pdev))
+		adapter->msi_enabled = 1;
+	return;
+}
+
+/**
+ * igb_request_irq - initialize interrupts
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int igb_request_irq(struct igb_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	int err = 0;
+
+	if (adapter->msix_entries) {
+		err = igb_request_msix(adapter);
+		if (!err) {
+			struct e1000_hw *hw = &adapter->hw;
+			/* enable IAM, auto-mask,
+			 * DO NOT USE EIAME or IAME in legacy mode */
+			wr32(E1000_IAM, IMS_ENABLE_MASK);
+			goto request_done;
+		}
+		/* fall back to MSI */
+		igb_reset_interrupt_capability(adapter);
+		if (!pci_enable_msi(adapter->pdev))
+			adapter->msi_enabled = 1;
+		igb_free_all_tx_resources(adapter);
+		igb_free_all_rx_resources(adapter);
+		adapter->num_rx_queues = 1;
+		igb_alloc_queues(adapter);
+	}
+	if (adapter->msi_enabled) {
+		err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0,
+				  netdev->name, netdev);
+		if (!err)
+			goto request_done;
+		/* fall back to legacy interrupts */
+		igb_reset_interrupt_capability(adapter);
+		adapter->msi_enabled = 0;
+	}
+
+	err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED,
+			  netdev->name, netdev);
+
+	if (err) {
+		dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n",
+			err);
+		goto request_done;
+	}
+
+	/* enable IAM, auto-mask */
+	wr32(E1000_IAM, IMS_ENABLE_MASK);
+
+request_done:
+	return err;
+}
+
+static void igb_free_irq(struct igb_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	if (adapter->msix_entries) {
+		int vector = 0, i;
+
+		for (i = 0; i < adapter->num_tx_queues; i++)
+			free_irq(adapter->msix_entries[vector++].vector,
+				&(adapter->tx_ring[i]));
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			free_irq(adapter->msix_entries[vector++].vector,
+				&(adapter->rx_ring[i]));
+
+		free_irq(adapter->msix_entries[vector++].vector, netdev);
+		return;
+	}
+
+	free_irq(adapter->pdev->irq, netdev);
+}
+
+/**
+ * igb_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ **/
+static void igb_irq_disable(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->msix_entries) {
+		wr32(E1000_EIMC, ~0);
+		wr32(E1000_EIAC, 0);
+	}
+	wr32(E1000_IMC, ~0);
+	wrfl();
+	synchronize_irq(adapter->pdev->irq);
+}
+
+/**
+ * igb_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ **/
+static void igb_irq_enable(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->msix_entries) {
+		wr32(E1000_EIMS,
+				adapter->eims_enable_mask);
+		wr32(E1000_EIAC,
+				adapter->eims_enable_mask);
+		wr32(E1000_IMS, E1000_IMS_LSC);
+	} else
+	wr32(E1000_IMS, IMS_ENABLE_MASK);
+}
+
+static void igb_update_mng_vlan(struct igb_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	u16 vid = adapter->hw.mng_cookie.vlan_id;
+	u16 old_vid = adapter->mng_vlan_id;
+	if (adapter->vlgrp) {
+		if (!vlan_group_get_device(adapter->vlgrp, vid)) {
+			if (adapter->hw.mng_cookie.status &
+				E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
+				igb_vlan_rx_add_vid(netdev, vid);
+				adapter->mng_vlan_id = vid;
+			} else
+				adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
+
+			if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
+					(vid != old_vid) &&
+			    !vlan_group_get_device(adapter->vlgrp, old_vid))
+				igb_vlan_rx_kill_vid(netdev, old_vid);
+		} else
+			adapter->mng_vlan_id = vid;
+	}
+}
+
+/**
+ * igb_release_hw_control - release control of the h/w to f/w
+ * @adapter: address of board private structure
+ *
+ * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that the
+ * driver is no longer loaded.
+ *
+ **/
+static void igb_release_hw_control(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl_ext;
+
+	/* Let firmware take over control of h/w */
+	ctrl_ext = rd32(E1000_CTRL_EXT);
+	wr32(E1000_CTRL_EXT,
+			ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
+}
+
+
+/**
+ * igb_get_hw_control - get control of the h/w from f/w
+ * @adapter: address of board private structure
+ *
+ * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that
+ * the driver is loaded.
+ *
+ **/
+static void igb_get_hw_control(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl_ext;
+
+	/* Let firmware know the driver has taken over */
+	ctrl_ext = rd32(E1000_CTRL_EXT);
+	wr32(E1000_CTRL_EXT,
+			ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
+}
+
+static void igb_init_manageability(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->en_mng_pt) {
+		u32 manc2h = rd32(E1000_MANC2H);
+		u32 manc = rd32(E1000_MANC);
+
+		/* disable hardware interception of ARP */
+		manc &= ~(E1000_MANC_ARP_EN);
+
+		/* enable receiving management packets to the host */
+		/* this will probably generate destination unreachable messages
+		 * from the host OS, but the packets will be handled on SMBUS */
+		manc |= E1000_MANC_EN_MNG2HOST;
+#define E1000_MNG2HOST_PORT_623 (1 << 5)
+#define E1000_MNG2HOST_PORT_664 (1 << 6)
+		manc2h |= E1000_MNG2HOST_PORT_623;
+		manc2h |= E1000_MNG2HOST_PORT_664;
+		wr32(E1000_MANC2H, manc2h);
+
+		wr32(E1000_MANC, manc);
+	}
+}
+
+static void igb_release_manageability(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->en_mng_pt) {
+		u32 manc = rd32(E1000_MANC);
+
+		/* re-enable hardware interception of ARP */
+		manc |= E1000_MANC_ARP_EN;
+		manc &= ~E1000_MANC_EN_MNG2HOST;
+
+		/* don't explicitly have to mess with MANC2H since
+		 * MANC has an enable disable that gates MANC2H */
+
+		/* XXX stop the hardware watchdog ? */
+		wr32(E1000_MANC, manc);
+	}
+}
+
+/**
+ * igb_configure - configure the hardware for RX and TX
+ * @adapter: private board structure
+ **/
+static void igb_configure(struct igb_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int i;
+
+	igb_get_hw_control(adapter);
+	igb_set_multi(netdev);
+
+	igb_restore_vlan(adapter);
+	igb_init_manageability(adapter);
+
+	igb_configure_tx(adapter);
+	igb_setup_rctl(adapter);
+	igb_configure_rx(adapter);
+	/* call IGB_DESC_UNUSED which always leaves
+	 * at least 1 descriptor unused to make sure
+	 * next_to_use != next_to_clean */
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *ring = &adapter->rx_ring[i];
+		igb_alloc_rx_buffers_adv(adapter, ring, IGB_DESC_UNUSED(ring));
+	}
+
+
+	adapter->tx_queue_len = netdev->tx_queue_len;
+}
+
+
+/**
+ * igb_up - Open the interface and prepare it to handle traffic
+ * @adapter: board private structure
+ **/
+
+int igb_up(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	int i;
+
+	/* hardware has been reset, we need to reload some things */
+	igb_configure(adapter);
+
+	clear_bit(__IGB_DOWN, &adapter->state);
+
+	napi_enable(&adapter->napi);
+
+	if (adapter->msix_entries) {
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			napi_enable(&adapter->rx_ring[i].napi);
+		igb_configure_msix(adapter);
+	}
+
+	/* Clear any pending interrupts. */
+	rd32(E1000_ICR);
+	igb_irq_enable(adapter);
+
+	/* Fire a link change interrupt to start the watchdog. */
+	wr32(E1000_ICS, E1000_ICS_LSC);
+	return 0;
+}
+
+void igb_down(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	u32 tctl, rctl;
+	int i;
+
+	/* signal that we're down so the interrupt handler does not
+	 * reschedule our watchdog timer */
+	set_bit(__IGB_DOWN, &adapter->state);
+
+	/* disable receives in the hardware */
+	rctl = rd32(E1000_RCTL);
+	wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
+	/* flush and sleep below */
+
+	netif_stop_queue(netdev);
+
+	/* disable transmits in the hardware */
+	tctl = rd32(E1000_TCTL);
+	tctl &= ~E1000_TCTL_EN;
+	wr32(E1000_TCTL, tctl);
+	/* flush both disables and wait for them to finish */
+	wrfl();
+	msleep(10);
+
+	napi_disable(&adapter->napi);
+
+	if (adapter->msix_entries)
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			napi_disable(&adapter->rx_ring[i].napi);
+	igb_irq_disable(adapter);
+
+	del_timer_sync(&adapter->watchdog_timer);
+	del_timer_sync(&adapter->phy_info_timer);
+
+	netdev->tx_queue_len = adapter->tx_queue_len;
+	netif_carrier_off(netdev);
+	adapter->link_speed = 0;
+	adapter->link_duplex = 0;
+
+	igb_reset(adapter);
+	igb_clean_all_tx_rings(adapter);
+	igb_clean_all_rx_rings(adapter);
+}
+
+void igb_reinit_locked(struct igb_adapter *adapter)
+{
+	WARN_ON(in_interrupt());
+	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
+		msleep(1);
+	igb_down(adapter);
+	igb_up(adapter);
+	clear_bit(__IGB_RESETTING, &adapter->state);
+}
+
+void igb_reset(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_fc_info *fc = &adapter->hw.fc;
+	u32 pba = 0, tx_space, min_tx_space, min_rx_space;
+	u16 hwm;
+
+	/* Repartition Pba for greater than 9k mtu
+	 * To take effect CTRL.RST is required.
+	 */
+	pba = E1000_PBA_34K;
+
+	if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
+		/* adjust PBA for jumbo frames */
+		wr32(E1000_PBA, pba);
+
+		/* To maintain wire speed transmits, the Tx FIFO should be
+		 * large enough to accommodate two full transmit packets,
+		 * rounded up to the next 1KB and expressed in KB.  Likewise,
+		 * the Rx FIFO should be large enough to accommodate at least
+		 * one full receive packet and is similarly rounded up and
+		 * expressed in KB. */
+		pba = rd32(E1000_PBA);
+		/* upper 16 bits has Tx packet buffer allocation size in KB */
+		tx_space = pba >> 16;
+		/* lower 16 bits has Rx packet buffer allocation size in KB */
+		pba &= 0xffff;
+		/* the tx fifo also stores 16 bytes of information about the tx
+		 * but don't include ethernet FCS because hardware appends it */
+		min_tx_space = (adapter->max_frame_size +
+				sizeof(struct e1000_tx_desc) -
+				ETH_FCS_LEN) * 2;
+		min_tx_space = ALIGN(min_tx_space, 1024);
+		min_tx_space >>= 10;
+		/* software strips receive CRC, so leave room for it */
+		min_rx_space = adapter->max_frame_size;
+		min_rx_space = ALIGN(min_rx_space, 1024);
+		min_rx_space >>= 10;
+
+		/* If current Tx allocation is less than the min Tx FIFO size,
+		 * and the min Tx FIFO size is less than the current Rx FIFO
+		 * allocation, take space away from current Rx allocation */
+		if (tx_space < min_tx_space &&
+		    ((min_tx_space - tx_space) < pba)) {
+			pba = pba - (min_tx_space - tx_space);
+
+			/* if short on rx space, rx wins and must trump tx
+			 * adjustment */
+			if (pba < min_rx_space)
+				pba = min_rx_space;
+		}
+	}
+	wr32(E1000_PBA, pba);
+
+	/* flow control settings */
+	/* The high water mark must be low enough to fit one full frame
+	 * (or the size used for early receive) above it in the Rx FIFO.
+	 * Set it to the lower of:
+	 * - 90% of the Rx FIFO size, or
+	 * - the full Rx FIFO size minus one full frame */
+	hwm = min(((pba << 10) * 9 / 10),
+		  ((pba << 10) - adapter->max_frame_size));
+
+	fc->high_water = hwm & 0xFFF8;	/* 8-byte granularity */
+	fc->low_water = fc->high_water - 8;
+	fc->pause_time = 0xFFFF;
+	fc->send_xon = 1;
+	fc->type = fc->original_type;
+
+	/* Allow time for pending master requests to run */
+	adapter->hw.mac.ops.reset_hw(&adapter->hw);
+	wr32(E1000_WUC, 0);
+
+	if (adapter->hw.mac.ops.init_hw(&adapter->hw))
+		dev_err(&adapter->pdev->dev, "Hardware Error\n");
+
+	igb_update_mng_vlan(adapter);
+
+	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
+	wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
+
+	igb_reset_adaptive(&adapter->hw);
+	adapter->hw.phy.ops.get_phy_info(&adapter->hw);
+	igb_release_manageability(adapter);
+}
+
+/**
+ * igb_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in igb_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * igb_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int __devinit igb_probe(struct pci_dev *pdev,
+			       const struct pci_device_id *ent)
+{
+	struct net_device *netdev;
+	struct igb_adapter *adapter;
+	struct e1000_hw *hw;
+	const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
+	unsigned long mmio_start, mmio_len;
+	static int cards_found;
+	int i, err, pci_using_dac;
+	u16 eeprom_data = 0;
+	u16 eeprom_apme_mask = IGB_EEPROM_APME;
+	u32 part_num;
+
+	err = pci_enable_device(pdev);
+	if (err)
+		return err;
+
+	pci_using_dac = 0;
+	err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+	if (!err) {
+		err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+		if (!err)
+			pci_using_dac = 1;
+	} else {
+		err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+		if (err) {
+			err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+			if (err) {
+				dev_err(&pdev->dev, "No usable DMA "
+					"configuration, aborting\n");
+				goto err_dma;
+			}
+		}
+	}
+
+	err = pci_request_regions(pdev, igb_driver_name);
+	if (err)
+		goto err_pci_reg;
+
+	pci_set_master(pdev);
+
+	err = -ENOMEM;
+	netdev = alloc_etherdev(sizeof(struct igb_adapter));
+	if (!netdev)
+		goto err_alloc_etherdev;
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	pci_set_drvdata(pdev, netdev);
+	adapter = netdev_priv(netdev);
+	adapter->netdev = netdev;
+	adapter->pdev = pdev;
+	hw = &adapter->hw;
+	hw->back = adapter;
+	adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE;
+
+	mmio_start = pci_resource_start(pdev, 0);
+	mmio_len = pci_resource_len(pdev, 0);
+
+	err = -EIO;
+	adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
+	if (!adapter->hw.hw_addr)
+		goto err_ioremap;
+
+	netdev->open = &igb_open;
+	netdev->stop = &igb_close;
+	netdev->get_stats = &igb_get_stats;
+	netdev->set_multicast_list = &igb_set_multi;
+	netdev->set_mac_address = &igb_set_mac;
+	netdev->change_mtu = &igb_change_mtu;
+	netdev->do_ioctl = &igb_ioctl;
+	igb_set_ethtool_ops(netdev);
+	netdev->tx_timeout = &igb_tx_timeout;
+	netdev->watchdog_timeo = 5 * HZ;
+	netif_napi_add(netdev, &adapter->napi, igb_clean, 64);
+	netdev->vlan_rx_register = igb_vlan_rx_register;
+	netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid;
+	netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	netdev->poll_controller = igb_netpoll;
+#endif
+	netdev->hard_start_xmit = &igb_xmit_frame_adv;
+
+	strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+	netdev->mem_start = mmio_start;
+	netdev->mem_end = mmio_start + mmio_len;
+
+	adapter->bd_number = cards_found;
+
+	/* PCI config space info */
+	hw->vendor_id = pdev->vendor;
+	hw->device_id = pdev->device;
+	hw->revision_id = pdev->revision;
+	hw->subsystem_vendor_id = pdev->subsystem_vendor;
+	hw->subsystem_device_id = pdev->subsystem_device;
+
+	/* setup the private structure */
+	hw->back = adapter;
+	/* Copy the default MAC, PHY and NVM function pointers */
+	memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
+	memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
+	memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
+	/* Initialize skew-specific constants */
+	err = ei->get_invariants(hw);
+	if (err)
+		goto err_hw_init;
+
+	err = igb_sw_init(adapter);
+	if (err)
+		goto err_sw_init;
+
+	igb_get_bus_info_pcie(hw);
+
+	hw->phy.autoneg_wait_to_complete = false;
+	hw->mac.adaptive_ifs = true;
+
+	/* Copper options */
+	if (hw->phy.media_type == e1000_media_type_copper) {
+		hw->phy.mdix = AUTO_ALL_MODES;
+		hw->phy.disable_polarity_correction = false;
+		hw->phy.ms_type = e1000_ms_hw_default;
+	}
+
+	if (igb_check_reset_block(hw))
+		dev_info(&pdev->dev,
+			"PHY reset is blocked due to SOL/IDER session.\n");
+
+	netdev->features = NETIF_F_SG |
+			   NETIF_F_HW_CSUM |
+			   NETIF_F_HW_VLAN_TX |
+			   NETIF_F_HW_VLAN_RX |
+			   NETIF_F_HW_VLAN_FILTER;
+
+	netdev->features |= NETIF_F_TSO;
+
+	netdev->features |= NETIF_F_TSO6;
+	if (pci_using_dac)
+		netdev->features |= NETIF_F_HIGHDMA;
+
+	netdev->features |= NETIF_F_LLTX;
+	adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
+
+	/* before reading the NVM, reset the controller to put the device in a
+	 * known good starting state */
+	hw->mac.ops.reset_hw(hw);
+
+	/* make sure the NVM is good */
+	if (igb_validate_nvm_checksum(hw) < 0) {
+		dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
+		err = -EIO;
+		goto err_eeprom;
+	}
+
+	/* copy the MAC address out of the NVM */
+	if (hw->mac.ops.read_mac_addr(hw))
+		dev_err(&pdev->dev, "NVM Read Error\n");
+
+	memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
+	memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
+
+	if (!is_valid_ether_addr(netdev->perm_addr)) {
+		dev_err(&pdev->dev, "Invalid MAC Address\n");
+		err = -EIO;
+		goto err_eeprom;
+	}
+
+	init_timer(&adapter->watchdog_timer);
+	adapter->watchdog_timer.function = &igb_watchdog;
+	adapter->watchdog_timer.data = (unsigned long) adapter;
+
+	init_timer(&adapter->phy_info_timer);
+	adapter->phy_info_timer.function = &igb_update_phy_info;
+	adapter->phy_info_timer.data = (unsigned long) adapter;
+
+	INIT_WORK(&adapter->reset_task, igb_reset_task);
+	INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
+
+	/* Initialize link & ring properties that are user-changeable */
+	adapter->tx_ring->count = 256;
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		adapter->tx_ring[i].count = adapter->tx_ring->count;
+	adapter->rx_ring->count = 256;
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		adapter->rx_ring[i].count = adapter->rx_ring->count;
+
+	adapter->fc_autoneg = true;
+	hw->mac.autoneg = true;
+	hw->phy.autoneg_advertised = 0x2f;
+
+	hw->fc.original_type = e1000_fc_default;
+	hw->fc.type = e1000_fc_default;
+
+	adapter->itr_setting = 3;
+	adapter->itr = IGB_START_ITR;
+
+	igb_validate_mdi_setting(hw);
+
+	adapter->rx_csum = 1;
+
+	/* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
+	 * enable the ACPI Magic Packet filter
+	 */
+
+	if (hw->bus.func == 0 ||
+	    hw->device_id == E1000_DEV_ID_82575EB_COPPER)
+		hw->nvm.ops.read_nvm(hw, NVM_INIT_CONTROL3_PORT_A, 1,
+				     &eeprom_data);
+
+	if (eeprom_data & eeprom_apme_mask)
+		adapter->eeprom_wol |= E1000_WUFC_MAG;
+
+	/* now that we have the eeprom settings, apply the special cases where
+	 * the eeprom may be wrong or the board simply won't support wake on
+	 * lan on a particular port */
+	switch (pdev->device) {
+	case E1000_DEV_ID_82575GB_QUAD_COPPER:
+		adapter->eeprom_wol = 0;
+		break;
+	case E1000_DEV_ID_82575EB_FIBER_SERDES:
+		/* Wake events only supported on port A for dual fiber
+		 * regardless of eeprom setting */
+		if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
+			adapter->eeprom_wol = 0;
+		break;
+	}
+
+	/* initialize the wol settings based on the eeprom settings */
+	adapter->wol = adapter->eeprom_wol;
+
+	/* reset the hardware with the new settings */
+	igb_reset(adapter);
+
+	/* let the f/w know that the h/w is now under the control of the
+	 * driver. */
+	igb_get_hw_control(adapter);
+
+	/* tell the stack to leave us alone until igb_open() is called */
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+
+	strcpy(netdev->name, "eth%d");
+	err = register_netdev(netdev);
+	if (err)
+		goto err_register;
+
+	dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
+	/* print bus type/speed/width info */
+	dev_info(&pdev->dev,
+		 "%s: (PCIe:%s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
+		 netdev->name,
+		 ((hw->bus.speed == e1000_bus_speed_2500)
+		  ? "2.5Gb/s" : "unknown"),
+		 ((hw->bus.width == e1000_bus_width_pcie_x4)
+		  ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1)
+		  ? "Width x1" : "unknown"),
+		 netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
+		 netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
+
+	igb_read_part_num(hw, &part_num);
+	dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name,
+		(part_num >> 8), (part_num & 0xff));
+
+	dev_info(&pdev->dev,
+		"Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
+		adapter->msix_entries ? "MSI-X" :
+		adapter->msi_enabled ? "MSI" : "legacy",
+		adapter->num_rx_queues, adapter->num_tx_queues);
+
+	cards_found++;
+	return 0;
+
+err_register:
+	igb_release_hw_control(adapter);
+err_eeprom:
+	if (!igb_check_reset_block(hw))
+		hw->phy.ops.reset_phy(hw);
+
+	if (hw->flash_address)
+		iounmap(hw->flash_address);
+
+	igb_remove_device(hw);
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+err_sw_init:
+err_hw_init:
+	iounmap(hw->hw_addr);
+err_ioremap:
+	free_netdev(netdev);
+err_alloc_etherdev:
+	pci_release_regions(pdev);
+err_pci_reg:
+err_dma:
+	pci_disable_device(pdev);
+	return err;
+}
+
+/**
+ * igb_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * igb_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device.  The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void __devexit igb_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	/* flush_scheduled work may reschedule our watchdog task, so
+	 * explicitly disable watchdog tasks from being rescheduled  */
+	set_bit(__IGB_DOWN, &adapter->state);
+	del_timer_sync(&adapter->watchdog_timer);
+	del_timer_sync(&adapter->phy_info_timer);
+
+	flush_scheduled_work();
+
+
+	igb_release_manageability(adapter);
+
+	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
+	 * would have already happened in close and is redundant. */
+	igb_release_hw_control(adapter);
+
+	unregister_netdev(netdev);
+
+	if (!igb_check_reset_block(&adapter->hw))
+		adapter->hw.phy.ops.reset_phy(&adapter->hw);
+
+	igb_remove_device(&adapter->hw);
+	igb_reset_interrupt_capability(adapter);
+
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+
+	iounmap(adapter->hw.hw_addr);
+	if (adapter->hw.flash_address)
+		iounmap(adapter->hw.flash_address);
+	pci_release_regions(pdev);
+
+	free_netdev(netdev);
+
+	pci_disable_device(pdev);
+}
+
+/**
+ * igb_sw_init - Initialize general software structures (struct igb_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * igb_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int __devinit igb_sw_init(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+
+	pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
+
+	adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
+	adapter->rx_ps_hdr_size = 0; /* disable packet split */
+	adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+	adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+
+	/* Number of supported queues. */
+	/* Having more queues than CPUs doesn't make sense. */
+	adapter->num_tx_queues = 1;
+	adapter->num_rx_queues = min(IGB_MAX_RX_QUEUES, num_online_cpus());
+
+	igb_set_interrupt_capability(adapter);
+
+	if (igb_alloc_queues(adapter)) {
+		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
+		return -ENOMEM;
+	}
+
+	/* Explicitly disable IRQ since the NIC can be in any state. */
+	igb_irq_disable(adapter);
+
+	set_bit(__IGB_DOWN, &adapter->state);
+	return 0;
+}
+
+/**
+ * igb_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).  At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+static int igb_open(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	int err;
+	int i;
+
+	/* disallow open during test */
+	if (test_bit(__IGB_TESTING, &adapter->state))
+		return -EBUSY;
+
+	/* allocate transmit descriptors */
+	err = igb_setup_all_tx_resources(adapter);
+	if (err)
+		goto err_setup_tx;
+
+	/* allocate receive descriptors */
+	err = igb_setup_all_rx_resources(adapter);
+	if (err)
+		goto err_setup_rx;
+
+	/* e1000_power_up_phy(adapter); */
+
+	adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
+	if ((adapter->hw.mng_cookie.status &
+	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
+		igb_update_mng_vlan(adapter);
+
+	/* before we allocate an interrupt, we must be ready to handle it.
+	 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
+	 * as soon as we call pci_request_irq, so we have to setup our
+	 * clean_rx handler before we do so.  */
+	igb_configure(adapter);
+
+	err = igb_request_irq(adapter);
+	if (err)
+		goto err_req_irq;
+
+	/* From here on the code is the same as igb_up() */
+	clear_bit(__IGB_DOWN, &adapter->state);
+
+	napi_enable(&adapter->napi);
+	if (adapter->msix_entries)
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			napi_enable(&adapter->rx_ring[i].napi);
+
+	igb_irq_enable(adapter);
+
+	/* Clear any pending interrupts. */
+	rd32(E1000_ICR);
+	/* Fire a link status change interrupt to start the watchdog. */
+	wr32(E1000_ICS, E1000_ICS_LSC);
+
+	return 0;
+
+err_req_irq:
+	igb_release_hw_control(adapter);
+	/* e1000_power_down_phy(adapter); */
+	igb_free_all_rx_resources(adapter);
+err_setup_rx:
+	igb_free_all_tx_resources(adapter);
+err_setup_tx:
+	igb_reset(adapter);
+
+	return err;
+}
+
+/**
+ * igb_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the driver's control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int igb_close(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
+	igb_down(adapter);
+
+	igb_free_irq(adapter);
+
+	igb_free_all_tx_resources(adapter);
+	igb_free_all_rx_resources(adapter);
+
+	/* kill manageability vlan ID if supported, but not if a vlan with
+	 * the same ID is registered on the host OS (let 8021q kill it) */
+	if ((adapter->hw.mng_cookie.status &
+			  E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+	     !(adapter->vlgrp &&
+	       vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
+		igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
+
+	return 0;
+}
+
+/**
+ * igb_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @adapter: board private structure
+ * @tx_ring: tx descriptor ring (for a specific queue) to setup
+ *
+ * Return 0 on success, negative on failure
+ **/
+
+int igb_setup_tx_resources(struct igb_adapter *adapter,
+			   struct igb_ring *tx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int size;
+
+	size = sizeof(struct igb_buffer) * tx_ring->count;
+	tx_ring->buffer_info = vmalloc(size);
+	if (!tx_ring->buffer_info)
+		goto err;
+	memset(tx_ring->buffer_info, 0, size);
+
+	/* round up to nearest 4K */
+	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc)
+			+ sizeof(u32);
+	tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+	tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
+					     &tx_ring->dma);
+
+	if (!tx_ring->desc)
+		goto err;
+
+	tx_ring->adapter = adapter;
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+	spin_lock_init(&tx_ring->tx_clean_lock);
+	spin_lock_init(&tx_ring->tx_lock);
+	return 0;
+
+err:
+	vfree(tx_ring->buffer_info);
+	dev_err(&adapter->pdev->dev,
+		"Unable to allocate memory for the transmit descriptor ring\n");
+	return -ENOMEM;
+}
+
+/**
+ * igb_setup_all_tx_resources - wrapper to allocate Tx resources
+ *				  (Descriptors) for all queues
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
+{
+	int i, err = 0;
+
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]);
+		if (err) {
+			dev_err(&adapter->pdev->dev,
+				"Allocation for Tx Queue %u failed\n", i);
+			for (i--; i >= 0; i--)
+				igb_free_tx_resources(adapter,
+							&adapter->tx_ring[i]);
+			break;
+		}
+	}
+
+	return err;
+}
+
+/**
+ * igb_configure_tx - Configure transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void igb_configure_tx(struct igb_adapter *adapter)
+{
+	u64 tdba, tdwba;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 tctl;
+	u32 txdctl, txctrl;
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		struct igb_ring *ring = &(adapter->tx_ring[i]);
+
+		wr32(E1000_TDLEN(i),
+				ring->count * sizeof(struct e1000_tx_desc));
+		tdba = ring->dma;
+		wr32(E1000_TDBAL(i),
+				tdba & 0x00000000ffffffffULL);
+		wr32(E1000_TDBAH(i), tdba >> 32);
+
+		tdwba = ring->dma + ring->count * sizeof(struct e1000_tx_desc);
+		tdwba |= 1; /* enable head wb */
+		wr32(E1000_TDWBAL(i),
+				tdwba & 0x00000000ffffffffULL);
+		wr32(E1000_TDWBAH(i), tdwba >> 32);
+
+		ring->head = E1000_TDH(i);
+		ring->tail = E1000_TDT(i);
+		writel(0, hw->hw_addr + ring->tail);
+		writel(0, hw->hw_addr + ring->head);
+		txdctl = rd32(E1000_TXDCTL(i));
+		txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
+		wr32(E1000_TXDCTL(i), txdctl);
+
+		/* Turn off Relaxed Ordering on head write-backs.  The
+		 * writebacks MUST be delivered in order or it will
+		 * completely screw up our bookeeping.
+		 */
+		txctrl = rd32(E1000_DCA_TXCTRL(i));
+		txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
+		wr32(E1000_DCA_TXCTRL(i), txctrl);
+	}
+
+
+
+	/* Use the default values for the Tx Inter Packet Gap (IPG) timer */
+
+	/* Program the Transmit Control Register */
+
+	tctl = rd32(E1000_TCTL);
+	tctl &= ~E1000_TCTL_CT;
+	tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
+		(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
+
+	igb_config_collision_dist(hw);
+
+	/* Setup Transmit Descriptor Settings for eop descriptor */
+	adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS;
+
+	/* Enable transmits */
+	tctl |= E1000_TCTL_EN;
+
+	wr32(E1000_TCTL, tctl);
+}
+
+/**
+ * igb_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @adapter: board private structure
+ * @rx_ring:    rx descriptor ring (for a specific queue) to setup
+ *
+ * Returns 0 on success, negative on failure
+ **/
+
+int igb_setup_rx_resources(struct igb_adapter *adapter,
+			   struct igb_ring *rx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int size, desc_len;
+
+	size = sizeof(struct igb_buffer) * rx_ring->count;
+	rx_ring->buffer_info = vmalloc(size);
+	if (!rx_ring->buffer_info)
+		goto err;
+	memset(rx_ring->buffer_info, 0, size);
+
+	desc_len = sizeof(union e1000_adv_rx_desc);
+
+	/* Round up to nearest 4K */
+	rx_ring->size = rx_ring->count * desc_len;
+	rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+	rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
+					     &rx_ring->dma);
+
+	if (!rx_ring->desc)
+		goto err;
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+	rx_ring->pending_skb = NULL;
+
+	rx_ring->adapter = adapter;
+	/* FIXME: do we want to setup ring->napi->poll here? */
+	rx_ring->napi.poll = adapter->napi.poll;
+
+	return 0;
+
+err:
+	vfree(rx_ring->buffer_info);
+	dev_err(&adapter->pdev->dev, "Unable to allocate memory for "
+		"the receive descriptor ring\n");
+	return -ENOMEM;
+}
+
+/**
+ * igb_setup_all_rx_resources - wrapper to allocate Rx resources
+ *				  (Descriptors) for all queues
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
+{
+	int i, err = 0;
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]);
+		if (err) {
+			dev_err(&adapter->pdev->dev,
+				"Allocation for Rx Queue %u failed\n", i);
+			for (i--; i >= 0; i--)
+				igb_free_rx_resources(adapter,
+							&adapter->rx_ring[i]);
+			break;
+		}
+	}
+
+	return err;
+}
+
+/**
+ * igb_setup_rctl - configure the receive control registers
+ * @adapter: Board private structure
+ **/
+static void igb_setup_rctl(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl;
+	u32 srrctl = 0;
+	int i;
+
+	rctl = rd32(E1000_RCTL);
+
+	rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
+
+	rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
+		E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
+		(adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
+
+	/* disable the stripping of CRC because it breaks
+	 * BMC firmware connected over SMBUS
+	rctl |= E1000_RCTL_SECRC;
+	*/
+
+	rctl &= ~E1000_RCTL_SBP;
+
+	if (adapter->netdev->mtu <= ETH_DATA_LEN)
+		rctl &= ~E1000_RCTL_LPE;
+	else
+		rctl |= E1000_RCTL_LPE;
+	if (adapter->rx_buffer_len <= IGB_RXBUFFER_2048) {
+		/* Setup buffer sizes */
+		rctl &= ~E1000_RCTL_SZ_4096;
+		rctl |= E1000_RCTL_BSEX;
+		switch (adapter->rx_buffer_len) {
+		case IGB_RXBUFFER_256:
+			rctl |= E1000_RCTL_SZ_256;
+			rctl &= ~E1000_RCTL_BSEX;
+			break;
+		case IGB_RXBUFFER_512:
+			rctl |= E1000_RCTL_SZ_512;
+			rctl &= ~E1000_RCTL_BSEX;
+			break;
+		case IGB_RXBUFFER_1024:
+			rctl |= E1000_RCTL_SZ_1024;
+			rctl &= ~E1000_RCTL_BSEX;
+			break;
+		case IGB_RXBUFFER_2048:
+		default:
+			rctl |= E1000_RCTL_SZ_2048;
+			rctl &= ~E1000_RCTL_BSEX;
+			break;
+		case IGB_RXBUFFER_4096:
+			rctl |= E1000_RCTL_SZ_4096;
+			break;
+		case IGB_RXBUFFER_8192:
+			rctl |= E1000_RCTL_SZ_8192;
+			break;
+		case IGB_RXBUFFER_16384:
+			rctl |= E1000_RCTL_SZ_16384;
+			break;
+		}
+	} else {
+		rctl &= ~E1000_RCTL_BSEX;
+		srrctl = adapter->rx_buffer_len >> E1000_SRRCTL_BSIZEPKT_SHIFT;
+	}
+
+	/* 82575 and greater support packet-split where the protocol
+	 * header is placed in skb->data and the packet data is
+	 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
+	 * In the case of a non-split, skb->data is linearly filled,
+	 * followed by the page buffers.  Therefore, skb->data is
+	 * sized to hold the largest protocol header.
+	 */
+	/* allocations using alloc_page take too long for regular MTU
+	 * so only enable packet split for jumbo frames */
+	if (rctl & E1000_RCTL_LPE) {
+		adapter->rx_ps_hdr_size = IGB_RXBUFFER_128;
+		srrctl = adapter->rx_ps_hdr_size <<
+			 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
+		/* buffer size is ALWAYS one page */
+		srrctl |= PAGE_SIZE >> E1000_SRRCTL_BSIZEPKT_SHIFT;
+		srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
+	} else {
+		adapter->rx_ps_hdr_size = 0;
+		srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
+	}
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		wr32(E1000_SRRCTL(i), srrctl);
+
+	wr32(E1000_RCTL, rctl);
+}
+
+/**
+ * igb_configure_rx - Configure receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void igb_configure_rx(struct igb_adapter *adapter)
+{
+	u64 rdba;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl, rxcsum;
+	u32 rxdctl;
+	int i;
+
+	/* disable receives while setting up the descriptors */
+	rctl = rd32(E1000_RCTL);
+	wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
+	wrfl();
+	mdelay(10);
+
+	if (adapter->itr_setting > 3)
+		wr32(E1000_ITR,
+				1000000000 / (adapter->itr * 256));
+
+	/* Setup the HW Rx Head and Tail Descriptor Pointers and
+	 * the Base and Length of the Rx Descriptor Ring */
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *ring = &(adapter->rx_ring[i]);
+		rdba = ring->dma;
+		wr32(E1000_RDBAL(i),
+				rdba & 0x00000000ffffffffULL);
+		wr32(E1000_RDBAH(i), rdba >> 32);
+		wr32(E1000_RDLEN(i),
+			       ring->count * sizeof(union e1000_adv_rx_desc));
+
+		ring->head = E1000_RDH(i);
+		ring->tail = E1000_RDT(i);
+		writel(0, hw->hw_addr + ring->tail);
+		writel(0, hw->hw_addr + ring->head);
+
+		rxdctl = rd32(E1000_RXDCTL(i));
+		rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
+		rxdctl &= 0xFFF00000;
+		rxdctl |= IGB_RX_PTHRESH;
+		rxdctl |= IGB_RX_HTHRESH << 8;
+		rxdctl |= IGB_RX_WTHRESH << 16;
+		wr32(E1000_RXDCTL(i), rxdctl);
+	}
+
+	if (adapter->num_rx_queues > 1) {
+		u32 random[10];
+		u32 mrqc;
+		u32 j, shift;
+		union e1000_reta {
+			u32 dword;
+			u8  bytes[4];
+		} reta;
+
+		get_random_bytes(&random[0], 40);
+
+		shift = 6;
+		for (j = 0; j < (32 * 4); j++) {
+			reta.bytes[j & 3] =
+				(j % adapter->num_rx_queues) << shift;
+			if ((j & 3) == 3)
+				writel(reta.dword,
+				       hw->hw_addr + E1000_RETA(0) + (j & ~3));
+		}
+		mrqc = E1000_MRQC_ENABLE_RSS_4Q;
+
+		/* Fill out hash function seeds */
+		for (j = 0; j < 10; j++)
+			array_wr32(E1000_RSSRK(0), j, random[j]);
+
+		mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
+			 E1000_MRQC_RSS_FIELD_IPV4_TCP);
+		mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
+			 E1000_MRQC_RSS_FIELD_IPV6_TCP);
+		mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
+			 E1000_MRQC_RSS_FIELD_IPV6_UDP);
+		mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
+			 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
+
+
+		wr32(E1000_MRQC, mrqc);
+
+		/* Multiqueue and raw packet checksumming are mutually
+		 * exclusive.  Note that this not the same as TCP/IP
+		 * checksumming, which works fine. */
+		rxcsum = rd32(E1000_RXCSUM);
+		rxcsum |= E1000_RXCSUM_PCSD;
+		wr32(E1000_RXCSUM, rxcsum);
+	} else {
+		/* Enable Receive Checksum Offload for TCP and UDP */
+		rxcsum = rd32(E1000_RXCSUM);
+		if (adapter->rx_csum) {
+			rxcsum |= E1000_RXCSUM_TUOFL;
+
+			/* Enable IPv4 payload checksum for UDP fragments
+			 * Must be used in conjunction with packet-split. */
+			if (adapter->rx_ps_hdr_size)
+				rxcsum |= E1000_RXCSUM_IPPCSE;
+		} else {
+			rxcsum &= ~E1000_RXCSUM_TUOFL;
+			/* don't need to clear IPPCSE as it defaults to 0 */
+		}
+		wr32(E1000_RXCSUM, rxcsum);
+	}
+
+	if (adapter->vlgrp)
+		wr32(E1000_RLPML,
+				adapter->max_frame_size + VLAN_TAG_SIZE);
+	else
+		wr32(E1000_RLPML, adapter->max_frame_size);
+
+	/* Enable Receives */
+	wr32(E1000_RCTL, rctl);
+}
+
+/**
+ * igb_free_tx_resources - Free Tx Resources per Queue
+ * @adapter: board private structure
+ * @tx_ring: Tx descriptor ring for a specific queue
+ *
+ * Free all transmit software resources
+ **/
+static void igb_free_tx_resources(struct igb_adapter *adapter,
+				  struct igb_ring *tx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	igb_clean_tx_ring(adapter, tx_ring);
+
+	vfree(tx_ring->buffer_info);
+	tx_ring->buffer_info = NULL;
+
+	pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
+
+	tx_ring->desc = NULL;
+}
+
+/**
+ * igb_free_all_tx_resources - Free Tx Resources for All Queues
+ * @adapter: board private structure
+ *
+ * Free all transmit software resources
+ **/
+static void igb_free_all_tx_resources(struct igb_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		igb_free_tx_resources(adapter, &adapter->tx_ring[i]);
+}
+
+static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter,
+					   struct igb_buffer *buffer_info)
+{
+	if (buffer_info->dma) {
+		pci_unmap_page(adapter->pdev,
+				buffer_info->dma,
+				buffer_info->length,
+				PCI_DMA_TODEVICE);
+		buffer_info->dma = 0;
+	}
+	if (buffer_info->skb) {
+		dev_kfree_skb_any(buffer_info->skb);
+		buffer_info->skb = NULL;
+	}
+	buffer_info->time_stamp = 0;
+	/* buffer_info must be completely set up in the transmit path */
+}
+
+/**
+ * igb_clean_tx_ring - Free Tx Buffers
+ * @adapter: board private structure
+ * @tx_ring: ring to be cleaned
+ **/
+static void igb_clean_tx_ring(struct igb_adapter *adapter,
+			      struct igb_ring *tx_ring)
+{
+	struct igb_buffer *buffer_info;
+	unsigned long size;
+	unsigned int i;
+
+	if (!tx_ring->buffer_info)
+		return;
+	/* Free all the Tx ring sk_buffs */
+
+	for (i = 0; i < tx_ring->count; i++) {
+		buffer_info = &tx_ring->buffer_info[i];
+		igb_unmap_and_free_tx_resource(adapter, buffer_info);
+	}
+
+	size = sizeof(struct igb_buffer) * tx_ring->count;
+	memset(tx_ring->buffer_info, 0, size);
+
+	/* Zero out the descriptor ring */
+
+	memset(tx_ring->desc, 0, tx_ring->size);
+
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+
+	writel(0, adapter->hw.hw_addr + tx_ring->head);
+	writel(0, adapter->hw.hw_addr + tx_ring->tail);
+}
+
+/**
+ * igb_clean_all_tx_rings - Free Tx Buffers for all queues
+ * @adapter: board private structure
+ **/
+static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		igb_clean_tx_ring(adapter, &adapter->tx_ring[i]);
+}
+
+/**
+ * igb_free_rx_resources - Free Rx Resources
+ * @adapter: board private structure
+ * @rx_ring: ring to clean the resources from
+ *
+ * Free all receive software resources
+ **/
+static void igb_free_rx_resources(struct igb_adapter *adapter,
+				  struct igb_ring *rx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	igb_clean_rx_ring(adapter, rx_ring);
+
+	vfree(rx_ring->buffer_info);
+	rx_ring->buffer_info = NULL;
+
+	pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
+
+	rx_ring->desc = NULL;
+}
+
+/**
+ * igb_free_all_rx_resources - Free Rx Resources for All Queues
+ * @adapter: board private structure
+ *
+ * Free all receive software resources
+ **/
+static void igb_free_all_rx_resources(struct igb_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		igb_free_rx_resources(adapter, &adapter->rx_ring[i]);
+}
+
+/**
+ * igb_clean_rx_ring - Free Rx Buffers per Queue
+ * @adapter: board private structure
+ * @rx_ring: ring to free buffers from
+ **/
+static void igb_clean_rx_ring(struct igb_adapter *adapter,
+			      struct igb_ring *rx_ring)
+{
+	struct igb_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
+	unsigned long size;
+	unsigned int i;
+
+	if (!rx_ring->buffer_info)
+		return;
+	/* Free all the Rx ring sk_buffs */
+	for (i = 0; i < rx_ring->count; i++) {
+		buffer_info = &rx_ring->buffer_info[i];
+		if (buffer_info->dma) {
+			if (adapter->rx_ps_hdr_size)
+				pci_unmap_single(pdev, buffer_info->dma,
+						 adapter->rx_ps_hdr_size,
+						 PCI_DMA_FROMDEVICE);
+			else
+				pci_unmap_single(pdev, buffer_info->dma,
+						 adapter->rx_buffer_len,
+						 PCI_DMA_FROMDEVICE);
+			buffer_info->dma = 0;
+		}
+
+		if (buffer_info->skb) {
+			dev_kfree_skb(buffer_info->skb);
+			buffer_info->skb = NULL;
+		}
+		if (buffer_info->page) {
+			pci_unmap_page(pdev, buffer_info->page_dma,
+				       PAGE_SIZE, PCI_DMA_FROMDEVICE);
+			put_page(buffer_info->page);
+			buffer_info->page = NULL;
+			buffer_info->page_dma = 0;
+		}
+	}
+
+	/* there also may be some cached data from a chained receive */
+	if (rx_ring->pending_skb) {
+		dev_kfree_skb(rx_ring->pending_skb);
+		rx_ring->pending_skb = NULL;
+	}
+
+	size = sizeof(struct igb_buffer) * rx_ring->count;
+	memset(rx_ring->buffer_info, 0, size);
+
+	/* Zero out the descriptor ring */
+	memset(rx_ring->desc, 0, rx_ring->size);
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+
+	writel(0, adapter->hw.hw_addr + rx_ring->head);
+	writel(0, adapter->hw.hw_addr + rx_ring->tail);
+}
+
+/**
+ * igb_clean_all_rx_rings - Free Rx Buffers for all queues
+ * @adapter: board private structure
+ **/
+static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		igb_clean_rx_ring(adapter, &adapter->rx_ring[i]);
+}
+
+/**
+ * igb_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igb_set_mac(struct net_device *netdev, void *p)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
+
+	adapter->hw.mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
+
+	return 0;
+}
+
+/**
+ * igb_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated.  This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ **/
+static void igb_set_multi(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_mac_info *mac = &hw->mac;
+	struct dev_mc_list *mc_ptr;
+	u8  *mta_list;
+	u32 rctl;
+	int i;
+
+	/* Check for Promiscuous and All Multicast modes */
+
+	rctl = rd32(E1000_RCTL);
+
+	if (netdev->flags & IFF_PROMISC)
+		rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
+	else if (netdev->flags & IFF_ALLMULTI) {
+		rctl |= E1000_RCTL_MPE;
+		rctl &= ~E1000_RCTL_UPE;
+	} else
+		rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+
+	wr32(E1000_RCTL, rctl);
+
+	if (!netdev->mc_count) {
+		/* nothing to program, so clear mc list */
+		igb_update_mc_addr_list(hw, NULL, 0, 1,
+					  mac->rar_entry_count);
+		return;
+	}
+
+	mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC);
+	if (!mta_list)
+		return;
+
+	/* The shared function expects a packed array of only addresses. */
+	mc_ptr = netdev->mc_list;
+
+	for (i = 0; i < netdev->mc_count; i++) {
+		if (!mc_ptr)
+			break;
+		memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN);
+		mc_ptr = mc_ptr->next;
+	}
+	igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count);
+	kfree(mta_list);
+}
+
+/* Need to wait a few seconds after link up to get diagnostic information from
+ * the phy */
+static void igb_update_phy_info(unsigned long data)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *) data;
+	adapter->hw.phy.ops.get_phy_info(&adapter->hw);
+}
+
+/**
+ * igb_watchdog - Timer Call-back
+ * @data: pointer to adapter cast into an unsigned long
+ **/
+static void igb_watchdog(unsigned long data)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	/* Do the rest outside of interrupt context */
+	schedule_work(&adapter->watchdog_task);
+}
+
+static void igb_watchdog_task(struct work_struct *work)
+{
+	struct igb_adapter *adapter = container_of(work,
+					struct igb_adapter, watchdog_task);
+	struct e1000_hw *hw = &adapter->hw;
+
+	struct net_device *netdev = adapter->netdev;
+	struct igb_ring *tx_ring = adapter->tx_ring;
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+	u32 link;
+	s32 ret_val;
+
+	if ((netif_carrier_ok(netdev)) &&
+	    (rd32(E1000_STATUS) & E1000_STATUS_LU))
+		goto link_up;
+
+	ret_val = hw->mac.ops.check_for_link(&adapter->hw);
+	if ((ret_val == E1000_ERR_PHY) &&
+	    (hw->phy.type == e1000_phy_igp_3) &&
+	    (rd32(E1000_CTRL) &
+	     E1000_PHY_CTRL_GBE_DISABLE))
+		dev_info(&adapter->pdev->dev,
+			 "Gigabit has been disabled, downgrading speed\n");
+
+	if ((hw->phy.media_type == e1000_media_type_internal_serdes) &&
+	    !(rd32(E1000_TXCW) & E1000_TXCW_ANE))
+		link = mac->serdes_has_link;
+	else
+		link = rd32(E1000_STATUS) &
+				      E1000_STATUS_LU;
+
+	if (link) {
+		if (!netif_carrier_ok(netdev)) {
+			u32 ctrl;
+			hw->mac.ops.get_speed_and_duplex(&adapter->hw,
+						   &adapter->link_speed,
+						   &adapter->link_duplex);
+
+			ctrl = rd32(E1000_CTRL);
+			dev_info(&adapter->pdev->dev,
+				 "NIC Link is Up %d Mbps %s, "
+				 "Flow Control: %s\n",
+				 adapter->link_speed,
+				 adapter->link_duplex == FULL_DUPLEX ?
+				 "Full Duplex" : "Half Duplex",
+				 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
+				 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
+				 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
+				 E1000_CTRL_TFCE) ? "TX" : "None")));
+
+			/* tweak tx_queue_len according to speed/duplex and
+			 * adjust the timeout factor */
+			netdev->tx_queue_len = adapter->tx_queue_len;
+			adapter->tx_timeout_factor = 1;
+			switch (adapter->link_speed) {
+			case SPEED_10:
+				netdev->tx_queue_len = 10;
+				adapter->tx_timeout_factor = 14;
+				break;
+			case SPEED_100:
+				netdev->tx_queue_len = 100;
+				/* maybe add some timeout factor ? */
+				break;
+			}
+
+			netif_carrier_on(netdev);
+			netif_wake_queue(netdev);
+
+			if (!test_bit(__IGB_DOWN, &adapter->state))
+				mod_timer(&adapter->phy_info_timer,
+					  round_jiffies(jiffies + 2 * HZ));
+		}
+	} else {
+		if (netif_carrier_ok(netdev)) {
+			adapter->link_speed = 0;
+			adapter->link_duplex = 0;
+			dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
+			netif_carrier_off(netdev);
+			netif_stop_queue(netdev);
+			if (!test_bit(__IGB_DOWN, &adapter->state))
+				mod_timer(&adapter->phy_info_timer,
+					  round_jiffies(jiffies + 2 * HZ));
+		}
+	}
+
+link_up:
+	igb_update_stats(adapter);
+
+	mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
+	adapter->tpt_old = adapter->stats.tpt;
+	mac->collision_delta = adapter->stats.colc - adapter->colc_old;
+	adapter->colc_old = adapter->stats.colc;
+
+	adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
+	adapter->gorc_old = adapter->stats.gorc;
+	adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
+	adapter->gotc_old = adapter->stats.gotc;
+
+	igb_update_adaptive(&adapter->hw);
+
+	if (!netif_carrier_ok(netdev)) {
+		if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) {
+			/* We've lost link, so the controller stops DMA,
+			 * but we've got queued Tx work that's never going
+			 * to get done, so reset controller to flush Tx.
+			 * (Do the reset outside of interrupt context). */
+			adapter->tx_timeout_count++;
+			schedule_work(&adapter->reset_task);
+		}
+	}
+
+	/* Cause software interrupt to ensure rx ring is cleaned */
+	wr32(E1000_ICS, E1000_ICS_RXDMT0);
+
+	/* Force detection of hung controller every watchdog period */
+	tx_ring->detect_tx_hung = true;
+
+	/* Reset the timer */
+	if (!test_bit(__IGB_DOWN, &adapter->state))
+		mod_timer(&adapter->watchdog_timer,
+			  round_jiffies(jiffies + 2 * HZ));
+}
+
+enum latency_range {
+	lowest_latency = 0,
+	low_latency = 1,
+	bulk_latency = 2,
+	latency_invalid = 255
+};
+
+
+static void igb_lower_rx_eitr(struct igb_adapter *adapter,
+			      struct igb_ring *rx_ring)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	int new_val;
+
+	new_val = rx_ring->itr_val / 2;
+	if (new_val < IGB_MIN_DYN_ITR)
+		new_val = IGB_MIN_DYN_ITR;
+
+	if (new_val != rx_ring->itr_val) {
+		rx_ring->itr_val = new_val;
+		wr32(rx_ring->itr_register,
+				1000000000 / (new_val * 256));
+	}
+}
+
+static void igb_raise_rx_eitr(struct igb_adapter *adapter,
+			      struct igb_ring *rx_ring)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	int new_val;
+
+	new_val = rx_ring->itr_val * 2;
+	if (new_val > IGB_MAX_DYN_ITR)
+		new_val = IGB_MAX_DYN_ITR;
+
+	if (new_val != rx_ring->itr_val) {
+		rx_ring->itr_val = new_val;
+		wr32(rx_ring->itr_register,
+				1000000000 / (new_val * 256));
+	}
+}
+
+/**
+ * igb_update_itr - update the dynamic ITR value based on statistics
+ *      Stores a new ITR value based on packets and byte
+ *      counts during the last interrupt.  The advantage of per interrupt
+ *      computation is faster updates and more accurate ITR for the current
+ *      traffic pattern.  Constants in this function were computed
+ *      based on theoretical maximum wire speed and thresholds were set based
+ *      on testing data as well as attempting to minimize response time
+ *      while increasing bulk throughput.
+ *      this functionality is controlled by the InterruptThrottleRate module
+ *      parameter (see igb_param.c)
+ *      NOTE:  These calculations are only valid when operating in a single-
+ *             queue environment.
+ * @adapter: pointer to adapter
+ * @itr_setting: current adapter->itr
+ * @packets: the number of packets during this measurement interval
+ * @bytes: the number of bytes during this measurement interval
+ **/
+static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting,
+				   int packets, int bytes)
+{
+	unsigned int retval = itr_setting;
+
+	if (packets == 0)
+		goto update_itr_done;
+
+	switch (itr_setting) {
+	case lowest_latency:
+		/* handle TSO and jumbo frames */
+		if (bytes/packets > 8000)
+			retval = bulk_latency;
+		else if ((packets < 5) && (bytes > 512))
+			retval = low_latency;
+		break;
+	case low_latency:  /* 50 usec aka 20000 ints/s */
+		if (bytes > 10000) {
+			/* this if handles the TSO accounting */
+			if (bytes/packets > 8000) {
+				retval = bulk_latency;
+			} else if ((packets < 10) || ((bytes/packets) > 1200)) {
+				retval = bulk_latency;
+			} else if ((packets > 35)) {
+				retval = lowest_latency;
+			}
+		} else if (bytes/packets > 2000) {
+			retval = bulk_latency;
+		} else if (packets <= 2 && bytes < 512) {
+			retval = lowest_latency;
+		}
+		break;
+	case bulk_latency: /* 250 usec aka 4000 ints/s */
+		if (bytes > 25000) {
+			if (packets > 35)
+				retval = low_latency;
+		} else if (bytes < 6000) {
+			retval = low_latency;
+		}
+		break;
+	}
+
+update_itr_done:
+	return retval;
+}
+
+static void igb_set_itr(struct igb_adapter *adapter, u16 itr_register,
+			int rx_only)
+{
+	u16 current_itr;
+	u32 new_itr = adapter->itr;
+
+	/* for non-gigabit speeds, just fix the interrupt rate at 4000 */
+	if (adapter->link_speed != SPEED_1000) {
+		current_itr = 0;
+		new_itr = 4000;
+		goto set_itr_now;
+	}
+
+	adapter->rx_itr = igb_update_itr(adapter,
+				    adapter->rx_itr,
+				    adapter->rx_ring->total_packets,
+				    adapter->rx_ring->total_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
+		adapter->rx_itr = low_latency;
+
+	if (!rx_only) {
+		adapter->tx_itr = igb_update_itr(adapter,
+					    adapter->tx_itr,
+					    adapter->tx_ring->total_packets,
+					    adapter->tx_ring->total_bytes);
+		/* conservative mode (itr 3) eliminates the
+		 * lowest_latency setting */
+		if (adapter->itr_setting == 3 &&
+		    adapter->tx_itr == lowest_latency)
+			adapter->tx_itr = low_latency;
+
+		current_itr = max(adapter->rx_itr, adapter->tx_itr);
+	} else {
+		current_itr = adapter->rx_itr;
+	}
+
+	switch (current_itr) {
+	/* counts and packets in update_itr are dependent on these numbers */
+	case lowest_latency:
+		new_itr = 70000;
+		break;
+	case low_latency:
+		new_itr = 20000; /* aka hwitr = ~200 */
+		break;
+	case bulk_latency:
+		new_itr = 4000;
+		break;
+	default:
+		break;
+	}
+
+set_itr_now:
+	if (new_itr != adapter->itr) {
+		/* this attempts to bias the interrupt rate towards Bulk
+		 * by adding intermediate steps when interrupt rate is
+		 * increasing */
+		new_itr = new_itr > adapter->itr ?
+			     min(adapter->itr + (new_itr >> 2), new_itr) :
+			     new_itr;
+		/* Don't write the value here; it resets the adapter's
+		 * internal timer, and causes us to delay far longer than
+		 * we should between interrupts.  Instead, we write the ITR
+		 * value at the beginning of the next interrupt so the timing
+		 * ends up being correct.
+		 */
+		adapter->itr = new_itr;
+		adapter->set_itr = 1;
+	}
+
+	return;
+}
+
+
+#define IGB_TX_FLAGS_CSUM		0x00000001
+#define IGB_TX_FLAGS_VLAN		0x00000002
+#define IGB_TX_FLAGS_TSO		0x00000004
+#define IGB_TX_FLAGS_IPV4		0x00000008
+#define IGB_TX_FLAGS_VLAN_MASK	0xffff0000
+#define IGB_TX_FLAGS_VLAN_SHIFT	16
+
+static inline int igb_tso_adv(struct igb_adapter *adapter,
+			      struct igb_ring *tx_ring,
+			      struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
+{
+	struct e1000_adv_tx_context_desc *context_desc;
+	unsigned int i;
+	int err;
+	struct igb_buffer *buffer_info;
+	u32 info = 0, tu_cmd = 0;
+	u32 mss_l4len_idx, l4len;
+	*hdr_len = 0;
+
+	if (skb_header_cloned(skb)) {
+		err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (err)
+			return err;
+	}
+
+	l4len = tcp_hdrlen(skb);
+	*hdr_len += l4len;
+
+	if (skb->protocol == htons(ETH_P_IP)) {
+		struct iphdr *iph = ip_hdr(skb);
+		iph->tot_len = 0;
+		iph->check = 0;
+		tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+							 iph->daddr, 0,
+							 IPPROTO_TCP,
+							 0);
+	} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+		ipv6_hdr(skb)->payload_len = 0;
+		tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+						       &ipv6_hdr(skb)->daddr,
+						       0, IPPROTO_TCP, 0);
+	}
+
+	i = tx_ring->next_to_use;
+
+	buffer_info = &tx_ring->buffer_info[i];
+	context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
+	/* VLAN MACLEN IPLEN */
+	if (tx_flags & IGB_TX_FLAGS_VLAN)
+		info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
+	info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+	*hdr_len += skb_network_offset(skb);
+	info |= skb_network_header_len(skb);
+	*hdr_len += skb_network_header_len(skb);
+	context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+	/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
+	tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+	if (skb->protocol == htons(ETH_P_IP))
+		tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+	tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+
+	context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+
+	/* MSS L4LEN IDX */
+	mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
+	mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
+
+	/* Context index must be unique per ring.  Luckily, so is the interrupt
+	 * mask value. */
+	mss_l4len_idx |= tx_ring->eims_value >> 4;
+
+	context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
+	context_desc->seqnum_seed = 0;
+
+	buffer_info->time_stamp = jiffies;
+	buffer_info->dma = 0;
+	i++;
+	if (i == tx_ring->count)
+		i = 0;
+
+	tx_ring->next_to_use = i;
+
+	return true;
+}
+
+static inline bool igb_tx_csum_adv(struct igb_adapter *adapter,
+					struct igb_ring *tx_ring,
+					struct sk_buff *skb, u32 tx_flags)
+{
+	struct e1000_adv_tx_context_desc *context_desc;
+	unsigned int i;
+	struct igb_buffer *buffer_info;
+	u32 info = 0, tu_cmd = 0;
+
+	if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
+	    (tx_flags & IGB_TX_FLAGS_VLAN)) {
+		i = tx_ring->next_to_use;
+		buffer_info = &tx_ring->buffer_info[i];
+		context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
+
+		if (tx_flags & IGB_TX_FLAGS_VLAN)
+			info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
+		info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+		if (skb->ip_summed == CHECKSUM_PARTIAL)
+			info |= skb_network_header_len(skb);
+
+		context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+		tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			if (skb->protocol == htons(ETH_P_IP))
+				tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+			if (skb->sk && (skb->sk->sk_protocol == IPPROTO_TCP))
+				tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+		}
+
+		context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+		context_desc->seqnum_seed = 0;
+		context_desc->mss_l4len_idx =
+					  cpu_to_le32(tx_ring->eims_value >> 4);
+
+		buffer_info->time_stamp = jiffies;
+		buffer_info->dma = 0;
+
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+		tx_ring->next_to_use = i;
+
+		return true;
+	}
+
+
+	return false;
+}
+
+#define IGB_MAX_TXD_PWR	16
+#define IGB_MAX_DATA_PER_TXD	(1<<IGB_MAX_TXD_PWR)
+
+static inline int igb_tx_map_adv(struct igb_adapter *adapter,
+				 struct igb_ring *tx_ring,
+				 struct sk_buff *skb)
+{
+	struct igb_buffer *buffer_info;
+	unsigned int len = skb_headlen(skb);
+	unsigned int count = 0, i;
+	unsigned int f;
+
+	i = tx_ring->next_to_use;
+
+	buffer_info = &tx_ring->buffer_info[i];
+	BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
+	buffer_info->length = len;
+	/* set time_stamp *before* dma to help avoid a possible race */
+	buffer_info->time_stamp = jiffies;
+	buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len,
+					  PCI_DMA_TODEVICE);
+	count++;
+	i++;
+	if (i == tx_ring->count)
+		i = 0;
+
+	for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
+		struct skb_frag_struct *frag;
+
+		frag = &skb_shinfo(skb)->frags[f];
+		len = frag->size;
+
+		buffer_info = &tx_ring->buffer_info[i];
+		BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
+		buffer_info->length = len;
+		buffer_info->time_stamp = jiffies;
+		buffer_info->dma = pci_map_page(adapter->pdev,
+						frag->page,
+						frag->page_offset,
+						len,
+						PCI_DMA_TODEVICE);
+
+		count++;
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+	}
+
+	i = (i == 0) ? tx_ring->count - 1 : i - 1;
+	tx_ring->buffer_info[i].skb = skb;
+
+	return count;
+}
+
+static inline void igb_tx_queue_adv(struct igb_adapter *adapter,
+				    struct igb_ring *tx_ring,
+				    int tx_flags, int count, u32 paylen,
+				    u8 hdr_len)
+{
+	union e1000_adv_tx_desc *tx_desc = NULL;
+	struct igb_buffer *buffer_info;
+	u32 olinfo_status = 0, cmd_type_len;
+	unsigned int i;
+
+	cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
+			E1000_ADVTXD_DCMD_DEXT);
+
+	if (tx_flags & IGB_TX_FLAGS_VLAN)
+		cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
+
+	if (tx_flags & IGB_TX_FLAGS_TSO) {
+		cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
+
+		/* insert tcp checksum */
+		olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+
+		/* insert ip checksum */
+		if (tx_flags & IGB_TX_FLAGS_IPV4)
+			olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
+
+	} else if (tx_flags & IGB_TX_FLAGS_CSUM) {
+		olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+	}
+
+	if (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO |
+			IGB_TX_FLAGS_VLAN))
+		olinfo_status |= tx_ring->eims_value >> 4;
+
+	olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
+
+	i = tx_ring->next_to_use;
+	while (count--) {
+		buffer_info = &tx_ring->buffer_info[i];
+		tx_desc = E1000_TX_DESC_ADV(*tx_ring, i);
+		tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
+		tx_desc->read.cmd_type_len =
+			cpu_to_le32(cmd_type_len | buffer_info->length);
+		tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+	}
+
+	tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
+	/* Force memory writes to complete before letting h/w
+	 * know there are new descriptors to fetch.  (Only
+	 * applicable for weak-ordered memory model archs,
+	 * such as IA-64). */
+	wmb();
+
+	tx_ring->next_to_use = i;
+	writel(i, adapter->hw.hw_addr + tx_ring->tail);
+	/* we need this if more than one processor can write to our tail
+	 * at a time, it syncronizes IO on IA64/Altix systems */
+	mmiowb();
+}
+
+static int __igb_maybe_stop_tx(struct net_device *netdev,
+			       struct igb_ring *tx_ring, int size)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	netif_stop_queue(netdev);
+	/* Herbert's original patch had:
+	 *  smp_mb__after_netif_stop_queue();
+	 * but since that doesn't exist yet, just open code it. */
+	smp_mb();
+
+	/* We need to check again in a case another CPU has just
+	 * made room available. */
+	if (IGB_DESC_UNUSED(tx_ring) < size)
+		return -EBUSY;
+
+	/* A reprieve! */
+	netif_start_queue(netdev);
+	++adapter->restart_queue;
+	return 0;
+}
+
+static int igb_maybe_stop_tx(struct net_device *netdev,
+			     struct igb_ring *tx_ring, int size)
+{
+	if (IGB_DESC_UNUSED(tx_ring) >= size)
+		return 0;
+	return __igb_maybe_stop_tx(netdev, tx_ring, size);
+}
+
+#define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
+
+static int igb_xmit_frame_ring_adv(struct sk_buff *skb,
+				   struct net_device *netdev,
+				   struct igb_ring *tx_ring)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	unsigned int tx_flags = 0;
+	unsigned int len;
+	unsigned long irq_flags;
+	u8 hdr_len = 0;
+	int tso = 0;
+
+	len = skb_headlen(skb);
+
+	if (test_bit(__IGB_DOWN, &adapter->state)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (skb->len <= 0) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (!spin_trylock_irqsave(&tx_ring->tx_lock, irq_flags))
+		/* Collision - tell upper layer to requeue */
+		return NETDEV_TX_LOCKED;
+
+	/* need: 1 descriptor per page,
+	 *       + 2 desc gap to keep tail from touching head,
+	 *       + 1 desc for skb->data,
+	 *       + 1 desc for context descriptor,
+	 * otherwise try next time */
+	if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) {
+		/* this is a hard error */
+		spin_unlock_irqrestore(&tx_ring->tx_lock, irq_flags);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+		tx_flags |= IGB_TX_FLAGS_VLAN;
+		tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
+	}
+
+	tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags,
+					      &hdr_len) : 0;
+
+	if (tso < 0) {
+		dev_kfree_skb_any(skb);
+		spin_unlock_irqrestore(&tx_ring->tx_lock, irq_flags);
+		return NETDEV_TX_OK;
+	}
+
+	if (tso)
+		tx_flags |= IGB_TX_FLAGS_TSO;
+	else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags))
+			if (skb->ip_summed == CHECKSUM_PARTIAL)
+				tx_flags |= IGB_TX_FLAGS_CSUM;
+
+	if (skb->protocol == htons(ETH_P_IP))
+		tx_flags |= IGB_TX_FLAGS_IPV4;
+
+	igb_tx_queue_adv(adapter, tx_ring, tx_flags,
+			 igb_tx_map_adv(adapter, tx_ring, skb),
+			 skb->len, hdr_len);
+
+	netdev->trans_start = jiffies;
+
+	/* Make sure there is space in the ring for the next send. */
+	igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4);
+
+	spin_unlock_irqrestore(&tx_ring->tx_lock, irq_flags);
+	return NETDEV_TX_OK;
+}
+
+static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct igb_ring *tx_ring = &adapter->tx_ring[0];
+
+	/* This goes back to the question of how to logically map a tx queue
+	 * to a flow.  Right now, performance is impacted slightly negatively
+	 * if using multiple tx queues.  If the stack breaks away from a
+	 * single qdisc implementation, we can look at this again. */
+	return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring));
+}
+
+/**
+ * igb_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void igb_tx_timeout(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* Do the reset outside of interrupt context */
+	adapter->tx_timeout_count++;
+	schedule_work(&adapter->reset_task);
+	wr32(E1000_EICS, adapter->eims_enable_mask &
+		~(E1000_EIMS_TCP_TIMER | E1000_EIMS_OTHER));
+}
+
+static void igb_reset_task(struct work_struct *work)
+{
+	struct igb_adapter *adapter;
+	adapter = container_of(work, struct igb_adapter, reset_task);
+
+	igb_reinit_locked(adapter);
+}
+
+/**
+ * igb_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ *
+ * Returns the address of the device statistics structure.
+ * The statistics are actually updated from the timer callback.
+ **/
+static struct net_device_stats *
+igb_get_stats(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	/* only return the current stats */
+	return &adapter->net_stats;
+}
+
+/**
+ * igb_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igb_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+
+	if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
+	    (max_frame > MAX_JUMBO_FRAME_SIZE)) {
+		dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
+		return -EINVAL;
+	}
+
+#define MAX_STD_JUMBO_FRAME_SIZE 9234
+	if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
+		dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
+		return -EINVAL;
+	}
+
+	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
+		msleep(1);
+	/* igb_down has a dependency on max_frame_size */
+	adapter->max_frame_size = max_frame;
+	if (netif_running(netdev))
+		igb_down(adapter);
+
+	/* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
+	 * means we reserve 2 more, this pushes us to allocate from the next
+	 * larger slab size.
+	 * i.e. RXBUFFER_2048 --> size-4096 slab
+	 */
+
+	if (max_frame <= IGB_RXBUFFER_256)
+		adapter->rx_buffer_len = IGB_RXBUFFER_256;
+	else if (max_frame <= IGB_RXBUFFER_512)
+		adapter->rx_buffer_len = IGB_RXBUFFER_512;
+	else if (max_frame <= IGB_RXBUFFER_1024)
+		adapter->rx_buffer_len = IGB_RXBUFFER_1024;
+	else if (max_frame <= IGB_RXBUFFER_2048)
+		adapter->rx_buffer_len = IGB_RXBUFFER_2048;
+	else
+		adapter->rx_buffer_len = IGB_RXBUFFER_4096;
+	/* adjust allocation if LPE protects us, and we aren't using SBP */
+	if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
+	     (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))
+		adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
+
+	dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
+		 netdev->mtu, new_mtu);
+	netdev->mtu = new_mtu;
+
+	if (netif_running(netdev))
+		igb_up(adapter);
+	else
+		igb_reset(adapter);
+
+	clear_bit(__IGB_RESETTING, &adapter->state);
+
+	return 0;
+}
+
+/**
+ * igb_update_stats - Update the board statistics counters
+ * @adapter: board private structure
+ **/
+
+void igb_update_stats(struct igb_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct pci_dev *pdev = adapter->pdev;
+	u16 phy_tmp;
+
+#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
+
+	/*
+	 * Prevent stats update while adapter is being reset, or if the pci
+	 * connection is down.
+	 */
+	if (adapter->link_speed == 0)
+		return;
+	if (pci_channel_offline(pdev))
+		return;
+
+	adapter->stats.crcerrs += rd32(E1000_CRCERRS);
+	adapter->stats.gprc += rd32(E1000_GPRC);
+	adapter->stats.gorc += rd32(E1000_GORCL);
+	rd32(E1000_GORCH); /* clear GORCL */
+	adapter->stats.bprc += rd32(E1000_BPRC);
+	adapter->stats.mprc += rd32(E1000_MPRC);
+	adapter->stats.roc += rd32(E1000_ROC);
+
+	adapter->stats.prc64 += rd32(E1000_PRC64);
+	adapter->stats.prc127 += rd32(E1000_PRC127);
+	adapter->stats.prc255 += rd32(E1000_PRC255);
+	adapter->stats.prc511 += rd32(E1000_PRC511);
+	adapter->stats.prc1023 += rd32(E1000_PRC1023);
+	adapter->stats.prc1522 += rd32(E1000_PRC1522);
+	adapter->stats.symerrs += rd32(E1000_SYMERRS);
+	adapter->stats.sec += rd32(E1000_SEC);
+
+	adapter->stats.mpc += rd32(E1000_MPC);
+	adapter->stats.scc += rd32(E1000_SCC);
+	adapter->stats.ecol += rd32(E1000_ECOL);
+	adapter->stats.mcc += rd32(E1000_MCC);
+	adapter->stats.latecol += rd32(E1000_LATECOL);
+	adapter->stats.dc += rd32(E1000_DC);
+	adapter->stats.rlec += rd32(E1000_RLEC);
+	adapter->stats.xonrxc += rd32(E1000_XONRXC);
+	adapter->stats.xontxc += rd32(E1000_XONTXC);
+	adapter->stats.xoffrxc += rd32(E1000_XOFFRXC);
+	adapter->stats.xofftxc += rd32(E1000_XOFFTXC);
+	adapter->stats.fcruc += rd32(E1000_FCRUC);
+	adapter->stats.gptc += rd32(E1000_GPTC);
+	adapter->stats.gotc += rd32(E1000_GOTCL);
+	rd32(E1000_GOTCH); /* clear GOTCL */
+	adapter->stats.rnbc += rd32(E1000_RNBC);
+	adapter->stats.ruc += rd32(E1000_RUC);
+	adapter->stats.rfc += rd32(E1000_RFC);
+	adapter->stats.rjc += rd32(E1000_RJC);
+	adapter->stats.tor += rd32(E1000_TORH);
+	adapter->stats.tot += rd32(E1000_TOTH);
+	adapter->stats.tpr += rd32(E1000_TPR);
+
+	adapter->stats.ptc64 += rd32(E1000_PTC64);
+	adapter->stats.ptc127 += rd32(E1000_PTC127);
+	adapter->stats.ptc255 += rd32(E1000_PTC255);
+	adapter->stats.ptc511 += rd32(E1000_PTC511);
+	adapter->stats.ptc1023 += rd32(E1000_PTC1023);
+	adapter->stats.ptc1522 += rd32(E1000_PTC1522);
+
+	adapter->stats.mptc += rd32(E1000_MPTC);
+	adapter->stats.bptc += rd32(E1000_BPTC);
+
+	/* used for adaptive IFS */
+
+	hw->mac.tx_packet_delta = rd32(E1000_TPT);
+	adapter->stats.tpt += hw->mac.tx_packet_delta;
+	hw->mac.collision_delta = rd32(E1000_COLC);
+	adapter->stats.colc += hw->mac.collision_delta;
+
+	adapter->stats.algnerrc += rd32(E1000_ALGNERRC);
+	adapter->stats.rxerrc += rd32(E1000_RXERRC);
+	adapter->stats.tncrs += rd32(E1000_TNCRS);
+	adapter->stats.tsctc += rd32(E1000_TSCTC);
+	adapter->stats.tsctfc += rd32(E1000_TSCTFC);
+
+	adapter->stats.iac += rd32(E1000_IAC);
+	adapter->stats.icrxoc += rd32(E1000_ICRXOC);
+	adapter->stats.icrxptc += rd32(E1000_ICRXPTC);
+	adapter->stats.icrxatc += rd32(E1000_ICRXATC);
+	adapter->stats.ictxptc += rd32(E1000_ICTXPTC);
+	adapter->stats.ictxatc += rd32(E1000_ICTXATC);
+	adapter->stats.ictxqec += rd32(E1000_ICTXQEC);
+	adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC);
+	adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC);
+
+	/* Fill out the OS statistics structure */
+	adapter->net_stats.multicast = adapter->stats.mprc;
+	adapter->net_stats.collisions = adapter->stats.colc;
+
+	/* Rx Errors */
+
+	/* RLEC on some newer hardware can be incorrect so build
+	* our own version based on RUC and ROC */
+	adapter->net_stats.rx_errors = adapter->stats.rxerrc +
+		adapter->stats.crcerrs + adapter->stats.algnerrc +
+		adapter->stats.ruc + adapter->stats.roc +
+		adapter->stats.cexterr;
+	adapter->net_stats.rx_length_errors = adapter->stats.ruc +
+					      adapter->stats.roc;
+	adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
+	adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
+	adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
+
+	/* Tx Errors */
+	adapter->net_stats.tx_errors = adapter->stats.ecol +
+				       adapter->stats.latecol;
+	adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
+	adapter->net_stats.tx_window_errors = adapter->stats.latecol;
+	adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
+
+	/* Tx Dropped needs to be maintained elsewhere */
+
+	/* Phy Stats */
+	if (hw->phy.media_type == e1000_media_type_copper) {
+		if ((adapter->link_speed == SPEED_1000) &&
+		   (!hw->phy.ops.read_phy_reg(hw, PHY_1000T_STATUS,
+					      &phy_tmp))) {
+			phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
+			adapter->phy_stats.idle_errors += phy_tmp;
+		}
+	}
+
+	/* Management Stats */
+	adapter->stats.mgptc += rd32(E1000_MGTPTC);
+	adapter->stats.mgprc += rd32(E1000_MGTPRC);
+	adapter->stats.mgpdc += rd32(E1000_MGTPDC);
+}
+
+
+static irqreturn_t igb_msix_other(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 eicr;
+	/* disable interrupts from the "other" bit, avoid re-entry */
+	wr32(E1000_EIMC, E1000_EIMS_OTHER);
+
+	eicr = rd32(E1000_EICR);
+
+	if (eicr & E1000_EIMS_OTHER) {
+		u32 icr = rd32(E1000_ICR);
+		/* reading ICR causes bit 31 of EICR to be cleared */
+		if (!(icr & E1000_ICR_LSC))
+			goto no_link_interrupt;
+		hw->mac.get_link_status = 1;
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__IGB_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+no_link_interrupt:
+	wr32(E1000_IMS, E1000_IMS_LSC);
+	wr32(E1000_EIMS, E1000_EIMS_OTHER);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t igb_msix_tx(int irq, void *data)
+{
+	struct igb_ring *tx_ring = data;
+	struct igb_adapter *adapter = tx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (!tx_ring->itr_val)
+		wr32(E1000_EIMC, tx_ring->eims_value);
+
+	tx_ring->total_bytes = 0;
+	tx_ring->total_packets = 0;
+	if (!igb_clean_tx_irq(adapter, tx_ring))
+		/* Ring was not completely cleaned, so fire another interrupt */
+		wr32(E1000_EICS, tx_ring->eims_value);
+
+	if (!tx_ring->itr_val)
+		wr32(E1000_EIMS, tx_ring->eims_value);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t igb_msix_rx(int irq, void *data)
+{
+	struct igb_ring *rx_ring = data;
+	struct igb_adapter *adapter = rx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (!rx_ring->itr_val)
+		wr32(E1000_EIMC, rx_ring->eims_value);
+
+	if (netif_rx_schedule_prep(adapter->netdev, &rx_ring->napi)) {
+		rx_ring->total_bytes = 0;
+		rx_ring->total_packets = 0;
+		rx_ring->no_itr_adjust = 0;
+		__netif_rx_schedule(adapter->netdev, &rx_ring->napi);
+	} else {
+		if (!rx_ring->no_itr_adjust) {
+			igb_lower_rx_eitr(adapter, rx_ring);
+			rx_ring->no_itr_adjust = 1;
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+
+/**
+ * igb_intr_msi - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t igb_intr_msi(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct napi_struct *napi = &adapter->napi;
+	struct e1000_hw *hw = &adapter->hw;
+	/* read ICR disables interrupts using IAM */
+	u32 icr = rd32(E1000_ICR);
+
+	/* Write the ITR value calculated at the end of the
+	 * previous interrupt.
+	 */
+	if (adapter->set_itr) {
+		wr32(E1000_ITR,
+			1000000000 / (adapter->itr * 256));
+		adapter->set_itr = 0;
+	}
+
+	/* read ICR disables interrupts using IAM */
+	if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
+		hw->mac.get_link_status = 1;
+		if (!test_bit(__IGB_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+	if (netif_rx_schedule_prep(netdev, napi)) {
+		adapter->tx_ring->total_bytes = 0;
+		adapter->tx_ring->total_packets = 0;
+		adapter->rx_ring->total_bytes = 0;
+		adapter->rx_ring->total_packets = 0;
+		__netif_rx_schedule(netdev, napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * igb_intr - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t igb_intr(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct napi_struct *napi = &adapter->napi;
+	struct e1000_hw *hw = &adapter->hw;
+	/* Interrupt Auto-Mask...upon reading ICR, interrupts are masked.  No
+	 * need for the IMC write */
+	u32 icr = rd32(E1000_ICR);
+	u32 eicr = 0;
+	if (!icr)
+		return IRQ_NONE;  /* Not our interrupt */
+
+	/* Write the ITR value calculated at the end of the
+	 * previous interrupt.
+	 */
+	if (adapter->set_itr) {
+		wr32(E1000_ITR,
+			1000000000 / (adapter->itr * 256));
+		adapter->set_itr = 0;
+	}
+
+	/* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
+	 * not set, then the adapter didn't send an interrupt */
+	if (!(icr & E1000_ICR_INT_ASSERTED))
+		return IRQ_NONE;
+
+	eicr = rd32(E1000_EICR);
+
+	if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
+		hw->mac.get_link_status = 1;
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__IGB_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+	if (netif_rx_schedule_prep(netdev, napi)) {
+		adapter->tx_ring->total_bytes = 0;
+		adapter->rx_ring->total_bytes = 0;
+		adapter->tx_ring->total_packets = 0;
+		adapter->rx_ring->total_packets = 0;
+		__netif_rx_schedule(netdev, napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * igb_clean - NAPI Rx polling callback
+ * @adapter: board private structure
+ **/
+static int igb_clean(struct napi_struct *napi, int budget)
+{
+	struct igb_adapter *adapter = container_of(napi, struct igb_adapter,
+						   napi);
+	struct net_device *netdev = adapter->netdev;
+	int tx_clean_complete = 1, work_done = 0;
+	int i;
+
+	/* Must NOT use netdev_priv macro here. */
+	adapter = netdev->priv;
+
+	/* Keep link state information with original netdev */
+	if (!netif_carrier_ok(netdev))
+		goto quit_polling;
+
+	/* igb_clean is called per-cpu.  This lock protects tx_ring[i] from
+	 * being cleaned by multiple cpus simultaneously.  A failure obtaining
+	 * the lock means tx_ring[i] is currently being cleaned anyway. */
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		if (spin_trylock(&adapter->tx_ring[i].tx_clean_lock)) {
+			tx_clean_complete &= igb_clean_tx_irq(adapter,
+							&adapter->tx_ring[i]);
+			spin_unlock(&adapter->tx_ring[i].tx_clean_lock);
+		}
+	}
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		igb_clean_rx_irq_adv(adapter, &adapter->rx_ring[i], &work_done,
+				     adapter->rx_ring[i].napi.weight);
+
+	/* If no Tx and not enough Rx work done, exit the polling mode */
+	if ((tx_clean_complete && (work_done < budget)) ||
+	    !netif_running(netdev)) {
+quit_polling:
+		if (adapter->itr_setting & 3)
+			igb_set_itr(adapter, E1000_ITR, false);
+		netif_rx_complete(netdev, napi);
+		if (!test_bit(__IGB_DOWN, &adapter->state))
+			igb_irq_enable(adapter);
+		return 0;
+	}
+
+	return 1;
+}
+
+static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget)
+{
+	struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi);
+	struct igb_adapter *adapter = rx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	int work_done = 0;
+
+	/* Keep link state information with original netdev */
+	if (!netif_carrier_ok(netdev))
+		goto quit_polling;
+
+	igb_clean_rx_irq_adv(adapter, rx_ring, &work_done, budget);
+
+
+	/* If not enough Rx work done, exit the polling mode */
+	if ((work_done == 0) || !netif_running(netdev)) {
+quit_polling:
+		netif_rx_complete(netdev, napi);
+
+		wr32(E1000_EIMS, rx_ring->eims_value);
+		if ((adapter->itr_setting & 3) && !rx_ring->no_itr_adjust &&
+		    (rx_ring->total_packets > IGB_DYN_ITR_PACKET_THRESHOLD)) {
+			int mean_size = rx_ring->total_bytes /
+					rx_ring->total_packets;
+			if (mean_size < IGB_DYN_ITR_LENGTH_LOW)
+				igb_raise_rx_eitr(adapter, rx_ring);
+			else if (mean_size > IGB_DYN_ITR_LENGTH_HIGH)
+				igb_lower_rx_eitr(adapter, rx_ring);
+		}
+		return 0;
+	}
+
+	return 1;
+}
+/**
+ * igb_clean_tx_irq - Reclaim resources after transmit completes
+ * @adapter: board private structure
+ * returns true if ring is completely cleaned
+ **/
+static bool igb_clean_tx_irq(struct igb_adapter *adapter,
+				  struct igb_ring *tx_ring)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_tx_desc *tx_desc;
+	struct igb_buffer *buffer_info;
+	struct sk_buff *skb;
+	unsigned int i;
+	u32 head, oldhead;
+	unsigned int count = 0;
+	bool cleaned = false;
+	bool retval = true;
+	unsigned int total_bytes = 0, total_packets = 0;
+
+	rmb();
+	head = *(volatile u32 *)((struct e1000_tx_desc *)tx_ring->desc
+				 + tx_ring->count);
+	head = le32_to_cpu(head);
+	i = tx_ring->next_to_clean;
+	while (1) {
+		while (i != head) {
+			cleaned = true;
+			tx_desc = E1000_TX_DESC(*tx_ring, i);
+			buffer_info = &tx_ring->buffer_info[i];
+			skb = buffer_info->skb;
+
+			if (skb) {
+				unsigned int segs, bytecount;
+				/* gso_segs is currently only valid for tcp */
+				segs = skb_shinfo(skb)->gso_segs ?: 1;
+				/* multiply data chunks by size of headers */
+				bytecount = ((segs - 1) * skb_headlen(skb)) +
+					    skb->len;
+				total_packets += segs;
+				total_bytes += bytecount;
+			}
+
+			igb_unmap_and_free_tx_resource(adapter, buffer_info);
+			tx_desc->upper.data = 0;
+
+			i++;
+			if (i == tx_ring->count)
+				i = 0;
+
+			count++;
+			if (count == IGB_MAX_TX_CLEAN) {
+				retval = false;
+				goto done_cleaning;
+			}
+		}
+		oldhead = head;
+		rmb();
+		head = *(volatile u32 *)((struct e1000_tx_desc *)tx_ring->desc
+					 + tx_ring->count);
+		head = le32_to_cpu(head);
+		if (head == oldhead)
+			goto done_cleaning;
+	}  /* while (1) */
+
+done_cleaning:
+	tx_ring->next_to_clean = i;
+
+	if (unlikely(cleaned &&
+		     netif_carrier_ok(netdev) &&
+		     IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) {
+		/* Make sure that anybody stopping the queue after this
+		 * sees the new next_to_clean.
+		 */
+		smp_mb();
+		if (netif_queue_stopped(netdev) &&
+		    !(test_bit(__IGB_DOWN, &adapter->state))) {
+			netif_wake_queue(netdev);
+			++adapter->restart_queue;
+		}
+	}
+
+	if (tx_ring->detect_tx_hung) {
+		/* Detect a transmit hang in hardware, this serializes the
+		 * check with the clearing of time_stamp and movement of i */
+		tx_ring->detect_tx_hung = false;
+		if (tx_ring->buffer_info[i].time_stamp &&
+		    time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
+			       (adapter->tx_timeout_factor * HZ))
+		    && !(rd32(E1000_STATUS) &
+			 E1000_STATUS_TXOFF)) {
+
+			tx_desc = E1000_TX_DESC(*tx_ring, i);
+			/* detected Tx unit hang */
+			dev_err(&adapter->pdev->dev,
+				"Detected Tx Unit Hang\n"
+				"  Tx Queue             <%lu>\n"
+				"  TDH                  <%x>\n"
+				"  TDT                  <%x>\n"
+				"  next_to_use          <%x>\n"
+				"  next_to_clean        <%x>\n"
+				"  head (WB)            <%x>\n"
+				"buffer_info[next_to_clean]\n"
+				"  time_stamp           <%lx>\n"
+				"  jiffies              <%lx>\n"
+				"  desc.status          <%x>\n",
+				(unsigned long)((tx_ring - adapter->tx_ring) /
+					sizeof(struct igb_ring)),
+				readl(adapter->hw.hw_addr + tx_ring->head),
+				readl(adapter->hw.hw_addr + tx_ring->tail),
+				tx_ring->next_to_use,
+				tx_ring->next_to_clean,
+				head,
+				tx_ring->buffer_info[i].time_stamp,
+				jiffies,
+				tx_desc->upper.fields.status);
+			netif_stop_queue(netdev);
+		}
+	}
+	tx_ring->total_bytes += total_bytes;
+	tx_ring->total_packets += total_packets;
+	adapter->net_stats.tx_bytes += total_bytes;
+	adapter->net_stats.tx_packets += total_packets;
+	return retval;
+}
+
+
+/**
+ * igb_receive_skb - helper function to handle rx indications
+ * @adapter: board private structure
+ * @status: descriptor status field as written by hardware
+ * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
+ * @skb: pointer to sk_buff to be indicated to stack
+ **/
+static void igb_receive_skb(struct igb_adapter *adapter, u8 status, u16 vlan,
+			    struct sk_buff *skb)
+{
+	if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
+		vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
+					 le16_to_cpu(vlan) &
+					 E1000_RXD_SPC_VLAN_MASK);
+	else
+		netif_receive_skb(skb);
+}
+
+
+static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
+				       u32 status_err, struct sk_buff *skb)
+{
+	skb->ip_summed = CHECKSUM_NONE;
+
+	/* Ignore Checksum bit is set or checksum is disabled through ethtool */
+	if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum)
+		return;
+	/* TCP/UDP checksum error bit is set */
+	if (status_err &
+	    (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
+		/* let the stack verify checksum errors */
+		adapter->hw_csum_err++;
+		return;
+	}
+	/* It must be a TCP or UDP packet with a valid checksum */
+	if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+	adapter->hw_csum_good++;
+}
+
+static bool igb_clean_rx_irq_adv(struct igb_adapter *adapter,
+				      struct igb_ring *rx_ring,
+				      int *work_done, int budget)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_adv_rx_desc *rx_desc , *next_rxd;
+	struct igb_buffer *buffer_info , *next_buffer;
+	struct sk_buff *skb;
+	unsigned int i, j;
+	u32 length, hlen, staterr;
+	bool cleaned = false;
+	int cleaned_count = 0;
+	unsigned int total_bytes = 0, total_packets = 0;
+
+	i = rx_ring->next_to_clean;
+	rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
+	staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+
+	while (staterr & E1000_RXD_STAT_DD) {
+		if (*work_done >= budget)
+			break;
+		(*work_done)++;
+		buffer_info = &rx_ring->buffer_info[i];
+
+		/* HW will not DMA in data larger than the given buffer, even
+		 * if it parses the (NFS, of course) header to be larger.  In
+		 * that case, it fills the header buffer and spills the rest
+		 * into the page.
+		 */
+		hlen = le16_to_cpu((rx_desc->wb.lower.lo_dword.hdr_info &
+		  E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT);
+		if (hlen > adapter->rx_ps_hdr_size)
+			hlen = adapter->rx_ps_hdr_size;
+
+		length = le16_to_cpu(rx_desc->wb.upper.length);
+		cleaned = true;
+		cleaned_count++;
+
+		if (rx_ring->pending_skb != NULL) {
+			skb = rx_ring->pending_skb;
+			rx_ring->pending_skb = NULL;
+			j = rx_ring->pending_skb_page;
+		} else {
+			skb = buffer_info->skb;
+			prefetch(skb->data - NET_IP_ALIGN);
+			buffer_info->skb = NULL;
+			if (hlen) {
+				pci_unmap_single(pdev, buffer_info->dma,
+						 adapter->rx_ps_hdr_size +
+						   NET_IP_ALIGN,
+						 PCI_DMA_FROMDEVICE);
+				skb_put(skb, hlen);
+			} else {
+				pci_unmap_single(pdev, buffer_info->dma,
+						 adapter->rx_buffer_len +
+						   NET_IP_ALIGN,
+						 PCI_DMA_FROMDEVICE);
+				skb_put(skb, length);
+				goto send_up;
+			}
+			j = 0;
+		}
+
+		while (length) {
+			pci_unmap_page(pdev, buffer_info->page_dma,
+				PAGE_SIZE, PCI_DMA_FROMDEVICE);
+			buffer_info->page_dma = 0;
+			skb_fill_page_desc(skb, j, buffer_info->page,
+						0, length);
+			buffer_info->page = NULL;
+
+			skb->len += length;
+			skb->data_len += length;
+			skb->truesize += length;
+			rx_desc->wb.upper.status_error = 0;
+			if (staterr & E1000_RXD_STAT_EOP)
+				break;
+
+			j++;
+			cleaned_count++;
+			i++;
+			if (i == rx_ring->count)
+				i = 0;
+
+			buffer_info = &rx_ring->buffer_info[i];
+			rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
+			staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+			length = le16_to_cpu(rx_desc->wb.upper.length);
+			if (!(staterr & E1000_RXD_STAT_DD)) {
+				rx_ring->pending_skb = skb;
+				rx_ring->pending_skb_page = j;
+				goto out;
+			}
+		}
+send_up:
+		pskb_trim(skb, skb->len - 4);
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		next_rxd = E1000_RX_DESC_ADV(*rx_ring, i);
+		prefetch(next_rxd);
+		next_buffer = &rx_ring->buffer_info[i];
+
+		if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
+			dev_kfree_skb_irq(skb);
+			goto next_desc;
+		}
+		rx_ring->no_itr_adjust |= (staterr & E1000_RXD_STAT_DYNINT);
+
+		total_bytes += skb->len;
+		total_packets++;
+
+		igb_rx_checksum_adv(adapter, staterr, skb);
+
+		skb->protocol = eth_type_trans(skb, netdev);
+
+		igb_receive_skb(adapter, staterr, rx_desc->wb.upper.vlan, skb);
+
+		netdev->last_rx = jiffies;
+
+next_desc:
+		rx_desc->wb.upper.status_error = 0;
+
+		/* return some buffers to hardware, one at a time is too slow */
+		if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
+			igb_alloc_rx_buffers_adv(adapter, rx_ring,
+						 cleaned_count);
+			cleaned_count = 0;
+		}
+
+		/* use prefetched values */
+		rx_desc = next_rxd;
+		buffer_info = next_buffer;
+
+		staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	}
+out:
+	rx_ring->next_to_clean = i;
+	cleaned_count = IGB_DESC_UNUSED(rx_ring);
+
+	if (cleaned_count)
+		igb_alloc_rx_buffers_adv(adapter, rx_ring, cleaned_count);
+
+	rx_ring->total_packets += total_packets;
+	rx_ring->total_bytes += total_bytes;
+	rx_ring->rx_stats.packets += total_packets;
+	rx_ring->rx_stats.bytes += total_bytes;
+	adapter->net_stats.rx_bytes += total_bytes;
+	adapter->net_stats.rx_packets += total_packets;
+	return cleaned;
+}
+
+
+/**
+ * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
+ * @adapter: address of board private structure
+ **/
+static void igb_alloc_rx_buffers_adv(struct igb_adapter *adapter,
+				     struct igb_ring *rx_ring,
+				     int cleaned_count)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_adv_rx_desc *rx_desc;
+	struct igb_buffer *buffer_info;
+	struct sk_buff *skb;
+	unsigned int i;
+
+	i = rx_ring->next_to_use;
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (cleaned_count--) {
+		rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
+
+		if (adapter->rx_ps_hdr_size && !buffer_info->page) {
+			buffer_info->page = alloc_page(GFP_ATOMIC);
+			if (!buffer_info->page) {
+				adapter->alloc_rx_buff_failed++;
+				goto no_buffers;
+			}
+			buffer_info->page_dma =
+				pci_map_page(pdev,
+					     buffer_info->page,
+					     0, PAGE_SIZE,
+					     PCI_DMA_FROMDEVICE);
+		}
+
+		if (!buffer_info->skb) {
+			int bufsz;
+
+			if (adapter->rx_ps_hdr_size)
+				bufsz = adapter->rx_ps_hdr_size;
+			else
+				bufsz = adapter->rx_buffer_len;
+			bufsz += NET_IP_ALIGN;
+			skb = netdev_alloc_skb(netdev, bufsz);
+
+			if (!skb) {
+				adapter->alloc_rx_buff_failed++;
+				goto no_buffers;
+			}
+
+			/* Make buffer alignment 2 beyond a 16 byte boundary
+			 * this will result in a 16 byte aligned IP header after
+			 * the 14 byte MAC header is removed
+			 */
+			skb_reserve(skb, NET_IP_ALIGN);
+
+			buffer_info->skb = skb;
+			buffer_info->dma = pci_map_single(pdev, skb->data,
+							  bufsz,
+							  PCI_DMA_FROMDEVICE);
+
+		}
+		/* Refresh the desc even if buffer_addrs didn't change because
+		 * each write-back erases this info. */
+		if (adapter->rx_ps_hdr_size) {
+			rx_desc->read.pkt_addr =
+			     cpu_to_le64(buffer_info->page_dma);
+			rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
+		} else {
+			rx_desc->read.pkt_addr =
+			     cpu_to_le64(buffer_info->dma);
+			rx_desc->read.hdr_addr = 0;
+		}
+
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		buffer_info = &rx_ring->buffer_info[i];
+	}
+
+no_buffers:
+	if (rx_ring->next_to_use != i) {
+		rx_ring->next_to_use = i;
+		if (i == 0)
+			i = (rx_ring->count - 1);
+		else
+			i--;
+
+		/* Force memory writes to complete before letting h/w
+		 * know there are new descriptors to fetch.  (Only
+		 * applicable for weak-ordered memory model archs,
+		 * such as IA-64). */
+		wmb();
+		writel(i, adapter->hw.hw_addr + rx_ring->tail);
+	}
+}
+
+/**
+ * igb_mii_ioctl -
+ * @netdev:
+ * @ifreq:
+ * @cmd:
+ **/
+static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct mii_ioctl_data *data = if_mii(ifr);
+
+	if (adapter->hw.phy.media_type != e1000_media_type_copper)
+		return -EOPNOTSUPP;
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		data->phy_id = adapter->hw.phy.addr;
+		break;
+	case SIOCGMIIREG:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		if (adapter->hw.phy.ops.read_phy_reg(&adapter->hw,
+						     data->reg_num
+						     & 0x1F, &data->val_out))
+			return -EIO;
+		break;
+	case SIOCSMIIREG:
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+/**
+ * igb_ioctl -
+ * @netdev:
+ * @ifreq:
+ * @cmd:
+ **/
+static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	case SIOCGMIIPHY:
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		return igb_mii_ioctl(netdev, ifr, cmd);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void igb_vlan_rx_register(struct net_device *netdev,
+				 struct vlan_group *grp)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl, rctl;
+
+	igb_irq_disable(adapter);
+	adapter->vlgrp = grp;
+
+	if (grp) {
+		/* enable VLAN tag insert/strip */
+		ctrl = rd32(E1000_CTRL);
+		ctrl |= E1000_CTRL_VME;
+		wr32(E1000_CTRL, ctrl);
+
+		/* enable VLAN receive filtering */
+		rctl = rd32(E1000_RCTL);
+		rctl |= E1000_RCTL_VFE;
+		rctl &= ~E1000_RCTL_CFIEN;
+		wr32(E1000_RCTL, rctl);
+		igb_update_mng_vlan(adapter);
+		wr32(E1000_RLPML,
+				adapter->max_frame_size + VLAN_TAG_SIZE);
+	} else {
+		/* disable VLAN tag insert/strip */
+		ctrl = rd32(E1000_CTRL);
+		ctrl &= ~E1000_CTRL_VME;
+		wr32(E1000_CTRL, ctrl);
+
+		/* disable VLAN filtering */
+		rctl = rd32(E1000_RCTL);
+		rctl &= ~E1000_RCTL_VFE;
+		wr32(E1000_RCTL, rctl);
+		if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) {
+			igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
+			adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
+		}
+		wr32(E1000_RLPML,
+				adapter->max_frame_size);
+	}
+
+	if (!test_bit(__IGB_DOWN, &adapter->state))
+		igb_irq_enable(adapter);
+}
+
+static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 vfta, index;
+
+	if ((adapter->hw.mng_cookie.status &
+	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+	    (vid == adapter->mng_vlan_id))
+		return;
+	/* add VID to filter table */
+	index = (vid >> 5) & 0x7F;
+	vfta = array_rd32(E1000_VFTA, index);
+	vfta |= (1 << (vid & 0x1F));
+	igb_write_vfta(&adapter->hw, index, vfta);
+}
+
+static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 vfta, index;
+
+	igb_irq_disable(adapter);
+	vlan_group_set_device(adapter->vlgrp, vid, NULL);
+
+	if (!test_bit(__IGB_DOWN, &adapter->state))
+		igb_irq_enable(adapter);
+
+	if ((adapter->hw.mng_cookie.status &
+	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+	    (vid == adapter->mng_vlan_id)) {
+		/* release control to f/w */
+		igb_release_hw_control(adapter);
+		return;
+	}
+
+	/* remove VID from filter table */
+	index = (vid >> 5) & 0x7F;
+	vfta = array_rd32(E1000_VFTA, index);
+	vfta &= ~(1 << (vid & 0x1F));
+	igb_write_vfta(&adapter->hw, index, vfta);
+}
+
+static void igb_restore_vlan(struct igb_adapter *adapter)
+{
+	igb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
+
+	if (adapter->vlgrp) {
+		u16 vid;
+		for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+			if (!vlan_group_get_device(adapter->vlgrp, vid))
+				continue;
+			igb_vlan_rx_add_vid(adapter->netdev, vid);
+		}
+	}
+}
+
+int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
+{
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+
+	mac->autoneg = 0;
+
+	/* Fiber NICs only allow 1000 gbps Full duplex */
+	if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
+		spddplx != (SPEED_1000 + DUPLEX_FULL)) {
+		dev_err(&adapter->pdev->dev,
+			"Unsupported Speed/Duplex configuration\n");
+		return -EINVAL;
+	}
+
+	switch (spddplx) {
+	case SPEED_10 + DUPLEX_HALF:
+		mac->forced_speed_duplex = ADVERTISE_10_HALF;
+		break;
+	case SPEED_10 + DUPLEX_FULL:
+		mac->forced_speed_duplex = ADVERTISE_10_FULL;
+		break;
+	case SPEED_100 + DUPLEX_HALF:
+		mac->forced_speed_duplex = ADVERTISE_100_HALF;
+		break;
+	case SPEED_100 + DUPLEX_FULL:
+		mac->forced_speed_duplex = ADVERTISE_100_FULL;
+		break;
+	case SPEED_1000 + DUPLEX_FULL:
+		mac->autoneg = 1;
+		adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
+		break;
+	case SPEED_1000 + DUPLEX_HALF: /* not supported */
+	default:
+		dev_err(&adapter->pdev->dev,
+			"Unsupported Speed/Duplex configuration\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+
+static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl, ctrl_ext, rctl, status;
+	u32 wufc = adapter->wol;
+#ifdef CONFIG_PM
+	int retval = 0;
+#endif
+
+	netif_device_detach(netdev);
+
+	if (netif_running(netdev)) {
+		WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
+		igb_down(adapter);
+		igb_free_irq(adapter);
+	}
+
+#ifdef CONFIG_PM
+	retval = pci_save_state(pdev);
+	if (retval)
+		return retval;
+#endif
+
+	status = rd32(E1000_STATUS);
+	if (status & E1000_STATUS_LU)
+		wufc &= ~E1000_WUFC_LNKC;
+
+	if (wufc) {
+		igb_setup_rctl(adapter);
+		igb_set_multi(netdev);
+
+		/* turn on all-multi mode if wake on multicast is enabled */
+		if (wufc & E1000_WUFC_MC) {
+			rctl = rd32(E1000_RCTL);
+			rctl |= E1000_RCTL_MPE;
+			wr32(E1000_RCTL, rctl);
+		}
+
+		ctrl = rd32(E1000_CTRL);
+		/* advertise wake from D3Cold */
+		#define E1000_CTRL_ADVD3WUC 0x00100000
+		/* phy power management enable */
+		#define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
+		ctrl |= E1000_CTRL_ADVD3WUC;
+		wr32(E1000_CTRL, ctrl);
+
+		if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
+		   adapter->hw.phy.media_type ==
+					e1000_media_type_internal_serdes) {
+			/* keep the laser running in D3 */
+			ctrl_ext = rd32(E1000_CTRL_EXT);
+			ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
+			wr32(E1000_CTRL_EXT, ctrl_ext);
+		}
+
+		/* Allow time for pending master requests to run */
+		igb_disable_pcie_master(&adapter->hw);
+
+		wr32(E1000_WUC, E1000_WUC_PME_EN);
+		wr32(E1000_WUFC, wufc);
+		pci_enable_wake(pdev, PCI_D3hot, 1);
+		pci_enable_wake(pdev, PCI_D3cold, 1);
+	} else {
+		wr32(E1000_WUC, 0);
+		wr32(E1000_WUFC, 0);
+		pci_enable_wake(pdev, PCI_D3hot, 0);
+		pci_enable_wake(pdev, PCI_D3cold, 0);
+	}
+
+	igb_release_manageability(adapter);
+
+	/* make sure adapter isn't asleep if manageability is enabled */
+	if (adapter->en_mng_pt) {
+		pci_enable_wake(pdev, PCI_D3hot, 1);
+		pci_enable_wake(pdev, PCI_D3cold, 1);
+	}
+
+	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
+	 * would have already happened in close and is redundant. */
+	igb_release_hw_control(adapter);
+
+	pci_disable_device(pdev);
+
+	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int igb_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 err;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"igb: Cannot enable PCI device from suspend\n");
+		return err;
+	}
+	pci_set_master(pdev);
+
+	pci_enable_wake(pdev, PCI_D3hot, 0);
+	pci_enable_wake(pdev, PCI_D3cold, 0);
+
+	if (netif_running(netdev)) {
+		err = igb_request_irq(adapter);
+		if (err)
+			return err;
+	}
+
+	/* e1000_power_up_phy(adapter); */
+
+	igb_reset(adapter);
+	wr32(E1000_WUS, ~0);
+
+	igb_init_manageability(adapter);
+
+	if (netif_running(netdev))
+		igb_up(adapter);
+
+	netif_device_attach(netdev);
+
+	/* let the f/w know that the h/w is now under the control of the
+	 * driver. */
+	igb_get_hw_control(adapter);
+
+	return 0;
+}
+#endif
+
+static void igb_shutdown(struct pci_dev *pdev)
+{
+	igb_suspend(pdev, PMSG_SUSPEND);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void igb_netpoll(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	int i;
+	int work_done = 0;
+
+	igb_irq_disable(adapter);
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		igb_clean_tx_irq(adapter, &adapter->tx_ring[i]);
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		igb_clean_rx_irq_adv(adapter, &adapter->rx_ring[i],
+				     &work_done,
+				     adapter->rx_ring[i].napi.weight);
+
+	igb_irq_enable(adapter);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+/**
+ * igb_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
+					      pci_channel_state_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	netif_device_detach(netdev);
+
+	if (netif_running(netdev))
+		igb_down(adapter);
+	pci_disable_device(pdev);
+
+	/* Request a slot slot reset. */
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * igb_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the igb_resume routine.
+ */
+static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (pci_enable_device(pdev)) {
+		dev_err(&pdev->dev,
+			"Cannot re-enable PCI device after reset.\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+	pci_set_master(pdev);
+
+	pci_enable_wake(pdev, PCI_D3hot, 0);
+	pci_enable_wake(pdev, PCI_D3cold, 0);
+
+	igb_reset(adapter);
+	wr32(E1000_WUS, ~0);
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * igb_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the igb_resume routine.
+ */
+static void igb_io_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	igb_init_manageability(adapter);
+
+	if (netif_running(netdev)) {
+		if (igb_up(adapter)) {
+			dev_err(&pdev->dev, "igb_up failed after reset\n");
+			return;
+		}
+	}
+
+	netif_device_attach(netdev);
+
+	/* let the f/w know that the h/w is now under the control of the
+	 * driver. */
+	igb_get_hw_control(adapter);
+
+}
+
+/* igb_main.c */