Merge branch 'next' into for-linus

Prepare first set of updates for 3.10 merge window.

1 files changed, 1555 insertions, 732 deletions

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index e1ceb37ef12e..4dbd62968c7a 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1,7 +1,7 @@
 /*******************************************************************************
 
   Intel(R) Gigabit Ethernet Linux driver
-  Copyright(c) 2007-2012 Intel Corporation.
+  Copyright(c) 2007-2013 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,
@@ -57,18 +57,20 @@
 #ifdef CONFIG_IGB_DCA
 #include <linux/dca.h>
 #endif
+#include <linux/i2c.h>
 #include "igb.h"
 
 #define MAJ 4
-#define MIN 0
-#define BUILD 1
+#define MIN 1
+#define BUILD 2
 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
 __stringify(BUILD) "-k"
 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) 2007-2012 Intel Corporation.";
+static const char igb_copyright[] =
+				"Copyright (c) 2007-2013 Intel Corporation.";
 
 static const struct e1000_info *igb_info_tbl[] = {
 	[board_82575] = &e1000_82575_info,
@@ -118,10 +120,11 @@ static void igb_free_all_tx_resources(struct igb_adapter *);
 static void igb_free_all_rx_resources(struct igb_adapter *);
 static void igb_setup_mrqc(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 void 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(struct igb_adapter *);
 static void igb_configure_tx(struct igb_adapter *);
 static void igb_configure_rx(struct igb_adapter *);
 static void igb_clean_all_tx_rings(struct igb_adapter *);
@@ -192,6 +195,7 @@ static const struct dev_pm_ops igb_pm_ops = {
 };
 #endif
 static void igb_shutdown(struct pci_dev *);
+static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs);
 #ifdef CONFIG_IGB_DCA
 static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
 static struct notifier_block dca_notifier = {
@@ -228,11 +232,12 @@ static struct pci_driver igb_driver = {
 	.name     = igb_driver_name,
 	.id_table = igb_pci_tbl,
 	.probe    = igb_probe,
-	.remove   = __devexit_p(igb_remove),
+	.remove   = igb_remove,
 #ifdef CONFIG_PM
 	.driver.pm = &igb_pm_ops,
 #endif
 	.shutdown = igb_shutdown,
+	.sriov_configure = igb_pci_sriov_configure,
 	.err_handler = &igb_err_handler
 };
 
@@ -534,31 +539,27 @@ rx_ring_summary:
 
 			if (staterr & E1000_RXD_STAT_DD) {
 				/* Descriptor Done */
-				pr_info("%s[0x%03X]     %016llX %016llX -------"
-					"--------- %p%s\n", "RWB", i,
+				pr_info("%s[0x%03X]     %016llX %016llX ---------------- %s\n",
+					"RWB", i,
 					le64_to_cpu(u0->a),
 					le64_to_cpu(u0->b),
-					buffer_info->skb, next_desc);
+					next_desc);
 			} else {
-				pr_info("%s[0x%03X]     %016llX %016llX %016llX"
-					" %p%s\n", "R  ", i,
+				pr_info("%s[0x%03X]     %016llX %016llX %016llX %s\n",
+					"R  ", i,
 					le64_to_cpu(u0->a),
 					le64_to_cpu(u0->b),
 					(u64)buffer_info->dma,
-					buffer_info->skb, next_desc);
+					next_desc);
 
 				if (netif_msg_pktdata(adapter) &&
-				    buffer_info->dma && buffer_info->skb) {
-					print_hex_dump(KERN_INFO, "",
-						  DUMP_PREFIX_ADDRESS,
-						  16, 1, buffer_info->skb->data,
-						  IGB_RX_HDR_LEN, true);
+				    buffer_info->dma && buffer_info->page) {
 					print_hex_dump(KERN_INFO, "",
 					  DUMP_PREFIX_ADDRESS,
 					  16, 1,
 					  page_address(buffer_info->page) +
 						      buffer_info->page_offset,
-					  PAGE_SIZE/2, true);
+					  IGB_RX_BUFSZ, true);
 				}
 			}
 		}
@@ -568,6 +569,91 @@ exit:
 	return;
 }
 
+/*  igb_get_i2c_data - Reads the I2C SDA data bit
+ *  @hw: pointer to hardware structure
+ *  @i2cctl: Current value of I2CCTL register
+ *
+ *  Returns the I2C data bit value
+ */
+static int igb_get_i2c_data(void *data)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct e1000_hw *hw = &adapter->hw;
+	s32 i2cctl = rd32(E1000_I2CPARAMS);
+
+	return ((i2cctl & E1000_I2C_DATA_IN) != 0);
+}
+
+/* igb_set_i2c_data - Sets the I2C data bit
+ *  @data: pointer to hardware structure
+ *  @state: I2C data value (0 or 1) to set
+ *
+ *  Sets the I2C data bit
+ */
+static void igb_set_i2c_data(void *data, int state)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct e1000_hw *hw = &adapter->hw;
+	s32 i2cctl = rd32(E1000_I2CPARAMS);
+
+	if (state)
+		i2cctl |= E1000_I2C_DATA_OUT;
+	else
+		i2cctl &= ~E1000_I2C_DATA_OUT;
+
+	i2cctl &= ~E1000_I2C_DATA_OE_N;
+	i2cctl |= E1000_I2C_CLK_OE_N;
+	wr32(E1000_I2CPARAMS, i2cctl);
+	wrfl();
+
+}
+
+/* igb_set_i2c_clk - Sets the I2C SCL clock
+ *  @data: pointer to hardware structure
+ *  @state: state to set clock
+ *
+ *  Sets the I2C clock line to state
+ */
+static void igb_set_i2c_clk(void *data, int state)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct e1000_hw *hw = &adapter->hw;
+	s32 i2cctl = rd32(E1000_I2CPARAMS);
+
+	if (state) {
+		i2cctl |= E1000_I2C_CLK_OUT;
+		i2cctl &= ~E1000_I2C_CLK_OE_N;
+	} else {
+		i2cctl &= ~E1000_I2C_CLK_OUT;
+		i2cctl &= ~E1000_I2C_CLK_OE_N;
+	}
+	wr32(E1000_I2CPARAMS, i2cctl);
+	wrfl();
+}
+
+/* igb_get_i2c_clk - Gets the I2C SCL clock state
+ *  @data: pointer to hardware structure
+ *
+ *  Gets the I2C clock state
+ */
+static int igb_get_i2c_clk(void *data)
+{
+	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct e1000_hw *hw = &adapter->hw;
+	s32 i2cctl = rd32(E1000_I2CPARAMS);
+
+	return ((i2cctl & E1000_I2C_CLK_IN) != 0);
+}
+
+static const struct i2c_algo_bit_data igb_i2c_algo = {
+	.setsda		= igb_set_i2c_data,
+	.setscl		= igb_set_i2c_clk,
+	.getsda		= igb_get_i2c_data,
+	.getscl		= igb_get_i2c_clk,
+	.udelay		= 5,
+	.timeout	= 20,
+};
+
 /**
  * igb_get_hw_dev - return device
  * used by hardware layer to print debugging information
@@ -656,80 +742,6 @@ static void igb_cache_ring_register(struct igb_adapter *adapter)
 	}
 }
 
-static void igb_free_queues(struct igb_adapter *adapter)
-{
-	int i;
-
-	for (i = 0; i < adapter->num_tx_queues; i++) {
-		kfree(adapter->tx_ring[i]);
-		adapter->tx_ring[i] = NULL;
-	}
-	for (i = 0; i < adapter->num_rx_queues; i++) {
-		kfree(adapter->rx_ring[i]);
-		adapter->rx_ring[i] = NULL;
-	}
-	adapter->num_rx_queues = 0;
-	adapter->num_tx_queues = 0;
-}
-
-/**
- * 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)
-{
-	struct igb_ring *ring;
-	int i;
-
-	for (i = 0; i < adapter->num_tx_queues; i++) {
-		ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL);
-		if (!ring)
-			goto err;
-		ring->count = adapter->tx_ring_count;
-		ring->queue_index = i;
-		ring->dev = &adapter->pdev->dev;
-		ring->netdev = adapter->netdev;
-		/* For 82575, context index must be unique per ring. */
-		if (adapter->hw.mac.type == e1000_82575)
-			set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags);
-		adapter->tx_ring[i] = ring;
-	}
-
-	for (i = 0; i < adapter->num_rx_queues; i++) {
-		ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL);
-		if (!ring)
-			goto err;
-		ring->count = adapter->rx_ring_count;
-		ring->queue_index = i;
-		ring->dev = &adapter->pdev->dev;
-		ring->netdev = adapter->netdev;
-		/* set flag indicating ring supports SCTP checksum offload */
-		if (adapter->hw.mac.type >= e1000_82576)
-			set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags);
-
-		/*
-		 * On i350, i210, and i211, loopback VLAN packets
-		 * have the tag byte-swapped.
-		 * */
-		if (adapter->hw.mac.type >= e1000_i350)
-			set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags);
-
-		adapter->rx_ring[i] = ring;
-	}
-
-	igb_cache_ring_register(adapter);
-
-	return 0;
-
-err:
-	igb_free_queues(adapter);
-
-	return -ENOMEM;
-}
-
 /**
  *  igb_write_ivar - configure ivar for given MSI-X vector
  *  @hw: pointer to the HW structure
@@ -909,17 +921,18 @@ static int igb_request_msix(struct igb_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
 	struct e1000_hw *hw = &adapter->hw;
-	int i, err = 0, vector = 0;
+	int i, err = 0, vector = 0, free_vector = 0;
 
 	err = request_irq(adapter->msix_entries[vector].vector,
 	                  igb_msix_other, 0, netdev->name, adapter);
 	if (err)
-		goto out;
-	vector++;
+		goto err_out;
 
 	for (i = 0; i < adapter->num_q_vectors; i++) {
 		struct igb_q_vector *q_vector = adapter->q_vector[i];
 
+		vector++;
+
 		q_vector->itr_register = hw->hw_addr + E1000_EITR(vector);
 
 		if (q_vector->rx.ring && q_vector->tx.ring)
@@ -938,13 +951,22 @@ static int igb_request_msix(struct igb_adapter *adapter)
 		                  igb_msix_ring, 0, q_vector->name,
 		                  q_vector);
 		if (err)
-			goto out;
-		vector++;
+			goto err_free;
 	}
 
 	igb_configure_msix(adapter);
 	return 0;
-out:
+
+err_free:
+	/* free already assigned IRQs */
+	free_irq(adapter->msix_entries[free_vector++].vector, adapter);
+
+	vector--;
+	for (i = 0; i < vector; i++) {
+		free_irq(adapter->msix_entries[free_vector++].vector,
+			 adapter->q_vector[i]);
+	}
+err_out:
 	return err;
 }
 
@@ -960,6 +982,35 @@ static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
 }
 
 /**
+ * igb_free_q_vector - Free memory allocated for specific interrupt vector
+ * @adapter: board private structure to initialize
+ * @v_idx: Index of vector to be freed
+ *
+ * This function frees the memory allocated to the q_vector.  In addition if
+ * NAPI is enabled it will delete any references to the NAPI struct prior
+ * to freeing the q_vector.
+ **/
+static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx)
+{
+	struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
+
+	if (q_vector->tx.ring)
+		adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL;
+
+	if (q_vector->rx.ring)
+		adapter->tx_ring[q_vector->rx.ring->queue_index] = NULL;
+
+	adapter->q_vector[v_idx] = NULL;
+	netif_napi_del(&q_vector->napi);
+
+	/*
+	 * ixgbe_get_stats64() might access the rings on this vector,
+	 * we must wait a grace period before freeing it.
+	 */
+	kfree_rcu(q_vector, rcu);
+}
+
+/**
  * igb_free_q_vectors - Free memory allocated for interrupt vectors
  * @adapter: board private structure to initialize
  *
@@ -969,17 +1020,14 @@ static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
  **/
 static void igb_free_q_vectors(struct igb_adapter *adapter)
 {
-	int v_idx;
+	int v_idx = adapter->num_q_vectors;
 
-	for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
-		struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
-		adapter->q_vector[v_idx] = NULL;
-		if (!q_vector)
-			continue;
-		netif_napi_del(&q_vector->napi);
-		kfree(q_vector);
-	}
+	adapter->num_tx_queues = 0;
+	adapter->num_rx_queues = 0;
 	adapter->num_q_vectors = 0;
+
+	while (v_idx--)
+		igb_free_q_vector(adapter, v_idx);
 }
 
 /**
@@ -990,7 +1038,6 @@ static void igb_free_q_vectors(struct igb_adapter *adapter)
  */
 static void igb_clear_interrupt_scheme(struct igb_adapter *adapter)
 {
-	igb_free_queues(adapter);
 	igb_free_q_vectors(adapter);
 	igb_reset_interrupt_capability(adapter);
 }
@@ -1001,11 +1048,14 @@ static void igb_clear_interrupt_scheme(struct igb_adapter *adapter)
  * Attempt to configure interrupts using the best available
  * capabilities of the hardware and kernel.
  **/
-static int igb_set_interrupt_capability(struct igb_adapter *adapter)
+static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix)
 {
 	int err;
 	int numvecs, i;
 
+	if (!msix)
+		goto msi_only;
+
 	/* Number of supported queues. */
 	adapter->num_rx_queues = adapter->rss_queues;
 	if (adapter->vfs_allocated_count)
@@ -1038,7 +1088,7 @@ static int igb_set_interrupt_capability(struct igb_adapter *adapter)
 			      adapter->msix_entries,
 			      numvecs);
 	if (err == 0)
-		goto out;
+		return;
 
 	igb_reset_interrupt_capability(adapter);
 
@@ -1068,105 +1118,183 @@ msi_only:
 	adapter->num_q_vectors = 1;
 	if (!pci_enable_msi(adapter->pdev))
 		adapter->flags |= IGB_FLAG_HAS_MSI;
-out:
-	/* Notify the stack of the (possibly) reduced queue counts. */
-	rtnl_lock();
-	netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
-	err = netif_set_real_num_rx_queues(adapter->netdev,
-		adapter->num_rx_queues);
-	rtnl_unlock();
-	return err;
+}
+
+static void igb_add_ring(struct igb_ring *ring,
+			 struct igb_ring_container *head)
+{
+	head->ring = ring;
+	head->count++;
 }
 
 /**
- * igb_alloc_q_vectors - Allocate memory for interrupt vectors
+ * igb_alloc_q_vector - Allocate memory for a single interrupt vector
  * @adapter: board private structure to initialize
+ * @v_count: q_vectors allocated on adapter, used for ring interleaving
+ * @v_idx: index of vector in adapter struct
+ * @txr_count: total number of Tx rings to allocate
+ * @txr_idx: index of first Tx ring to allocate
+ * @rxr_count: total number of Rx rings to allocate
+ * @rxr_idx: index of first Rx ring to allocate
  *
- * We allocate one q_vector per queue interrupt.  If allocation fails we
- * return -ENOMEM.
+ * We allocate one q_vector.  If allocation fails we return -ENOMEM.
  **/
-static int igb_alloc_q_vectors(struct igb_adapter *adapter)
+static int igb_alloc_q_vector(struct igb_adapter *adapter,
+			      int v_count, int v_idx,
+			      int txr_count, int txr_idx,
+			      int rxr_count, int rxr_idx)
 {
 	struct igb_q_vector *q_vector;
-	struct e1000_hw *hw = &adapter->hw;
-	int v_idx;
+	struct igb_ring *ring;
+	int ring_count, size;
 
-	for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
-		q_vector = kzalloc(sizeof(struct igb_q_vector),
-				   GFP_KERNEL);
-		if (!q_vector)
-			goto err_out;
-		q_vector->adapter = adapter;
-		q_vector->itr_register = hw->hw_addr + E1000_EITR(0);
-		q_vector->itr_val = IGB_START_ITR;
-		netif_napi_add(adapter->netdev, &q_vector->napi, igb_poll, 64);
-		adapter->q_vector[v_idx] = q_vector;
+	/* igb only supports 1 Tx and/or 1 Rx queue per vector */
+	if (txr_count > 1 || rxr_count > 1)
+		return -ENOMEM;
+
+	ring_count = txr_count + rxr_count;
+	size = sizeof(struct igb_q_vector) +
+	       (sizeof(struct igb_ring) * ring_count);
+
+	/* allocate q_vector and rings */
+	q_vector = kzalloc(size, GFP_KERNEL);
+	if (!q_vector)
+		return -ENOMEM;
+
+	/* initialize NAPI */
+	netif_napi_add(adapter->netdev, &q_vector->napi,
+		       igb_poll, 64);
+
+	/* tie q_vector and adapter together */
+	adapter->q_vector[v_idx] = q_vector;
+	q_vector->adapter = adapter;
+
+	/* initialize work limits */
+	q_vector->tx.work_limit = adapter->tx_work_limit;
+
+	/* initialize ITR configuration */
+	q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0);
+	q_vector->itr_val = IGB_START_ITR;
+
+	/* initialize pointer to rings */
+	ring = q_vector->ring;
+
+	if (txr_count) {
+		/* assign generic ring traits */
+		ring->dev = &adapter->pdev->dev;
+		ring->netdev = adapter->netdev;
+
+		/* configure backlink on ring */
+		ring->q_vector = q_vector;
+
+		/* update q_vector Tx values */
+		igb_add_ring(ring, &q_vector->tx);
+
+		/* For 82575, context index must be unique per ring. */
+		if (adapter->hw.mac.type == e1000_82575)
+			set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags);
+
+		/* apply Tx specific ring traits */
+		ring->count = adapter->tx_ring_count;
+		ring->queue_index = txr_idx;
+
+		/* assign ring to adapter */
+		adapter->tx_ring[txr_idx] = ring;
+
+		/* push pointer to next ring */
+		ring++;
 	}
 
-	return 0;
+	if (rxr_count) {
+		/* assign generic ring traits */
+		ring->dev = &adapter->pdev->dev;
+		ring->netdev = adapter->netdev;
 
-err_out:
-	igb_free_q_vectors(adapter);
-	return -ENOMEM;
-}
+		/* configure backlink on ring */
+		ring->q_vector = q_vector;
 
-static void igb_map_rx_ring_to_vector(struct igb_adapter *adapter,
-                                      int ring_idx, int v_idx)
-{
-	struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
+		/* update q_vector Rx values */
+		igb_add_ring(ring, &q_vector->rx);
 
-	q_vector->rx.ring = adapter->rx_ring[ring_idx];
-	q_vector->rx.ring->q_vector = q_vector;
-	q_vector->rx.count++;
-	q_vector->itr_val = adapter->rx_itr_setting;
-	if (q_vector->itr_val && q_vector->itr_val <= 3)
-		q_vector->itr_val = IGB_START_ITR;
-}
+		/* set flag indicating ring supports SCTP checksum offload */
+		if (adapter->hw.mac.type >= e1000_82576)
+			set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags);
 
-static void igb_map_tx_ring_to_vector(struct igb_adapter *adapter,
-                                      int ring_idx, int v_idx)
-{
-	struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
+		/*
+		 * On i350, i210, and i211, loopback VLAN packets
+		 * have the tag byte-swapped.
+		 * */
+		if (adapter->hw.mac.type >= e1000_i350)
+			set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags);
 
-	q_vector->tx.ring = adapter->tx_ring[ring_idx];
-	q_vector->tx.ring->q_vector = q_vector;
-	q_vector->tx.count++;
-	q_vector->itr_val = adapter->tx_itr_setting;
-	q_vector->tx.work_limit = adapter->tx_work_limit;
-	if (q_vector->itr_val && q_vector->itr_val <= 3)
-		q_vector->itr_val = IGB_START_ITR;
+		/* apply Rx specific ring traits */
+		ring->count = adapter->rx_ring_count;
+		ring->queue_index = rxr_idx;
+
+		/* assign ring to adapter */
+		adapter->rx_ring[rxr_idx] = ring;
+	}
+
+	return 0;
 }
 
+
 /**
- * igb_map_ring_to_vector - maps allocated queues to vectors
+ * igb_alloc_q_vectors - Allocate memory for interrupt vectors
+ * @adapter: board private structure to initialize
  *
- * This function maps the recently allocated queues to vectors.
+ * We allocate one q_vector per queue interrupt.  If allocation fails we
+ * return -ENOMEM.
  **/
-static int igb_map_ring_to_vector(struct igb_adapter *adapter)
+static int igb_alloc_q_vectors(struct igb_adapter *adapter)
 {
-	int i;
-	int v_idx = 0;
+	int q_vectors = adapter->num_q_vectors;
+	int rxr_remaining = adapter->num_rx_queues;
+	int txr_remaining = adapter->num_tx_queues;
+	int rxr_idx = 0, txr_idx = 0, v_idx = 0;
+	int err;
 
-	if ((adapter->num_q_vectors < adapter->num_rx_queues) ||
-	    (adapter->num_q_vectors < adapter->num_tx_queues))
-		return -ENOMEM;
+	if (q_vectors >= (rxr_remaining + txr_remaining)) {
+		for (; rxr_remaining; v_idx++) {
+			err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
+						 0, 0, 1, rxr_idx);
 
-	if (adapter->num_q_vectors >=
-	    (adapter->num_rx_queues + adapter->num_tx_queues)) {
-		for (i = 0; i < adapter->num_rx_queues; i++)
-			igb_map_rx_ring_to_vector(adapter, i, v_idx++);
-		for (i = 0; i < adapter->num_tx_queues; i++)
-			igb_map_tx_ring_to_vector(adapter, i, v_idx++);
-	} else {
-		for (i = 0; i < adapter->num_rx_queues; i++) {
-			if (i < adapter->num_tx_queues)
-				igb_map_tx_ring_to_vector(adapter, i, v_idx);
-			igb_map_rx_ring_to_vector(adapter, i, v_idx++);
+			if (err)
+				goto err_out;
+
+			/* update counts and index */
+			rxr_remaining--;
+			rxr_idx++;
 		}
-		for (; i < adapter->num_tx_queues; i++)
-			igb_map_tx_ring_to_vector(adapter, i, v_idx++);
 	}
+
+	for (; v_idx < q_vectors; v_idx++) {
+		int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx);
+		int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx);
+		err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
+					 tqpv, txr_idx, rqpv, rxr_idx);
+
+		if (err)
+			goto err_out;
+
+		/* update counts and index */
+		rxr_remaining -= rqpv;
+		txr_remaining -= tqpv;
+		rxr_idx++;
+		txr_idx++;
+	}
+
 	return 0;
+
+err_out:
+	adapter->num_tx_queues = 0;
+	adapter->num_rx_queues = 0;
+	adapter->num_q_vectors = 0;
+
+	while (v_idx--)
+		igb_free_q_vector(adapter, v_idx);
+
+	return -ENOMEM;
 }
 
 /**
@@ -1174,14 +1302,12 @@ static int igb_map_ring_to_vector(struct igb_adapter *adapter)
  *
  * This function initializes the interrupts and allocates all of the queues.
  **/
-static int igb_init_interrupt_scheme(struct igb_adapter *adapter)
+static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix)
 {
 	struct pci_dev *pdev = adapter->pdev;
 	int err;
 
-	err = igb_set_interrupt_capability(adapter);
-	if (err)
-		return err;
+	igb_set_interrupt_capability(adapter, msix);
 
 	err = igb_alloc_q_vectors(adapter);
 	if (err) {
@@ -1189,24 +1315,10 @@ static int igb_init_interrupt_scheme(struct igb_adapter *adapter)
 		goto err_alloc_q_vectors;
 	}
 
-	err = igb_alloc_queues(adapter);
-	if (err) {
-		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
-		goto err_alloc_queues;
-	}
-
-	err = igb_map_ring_to_vector(adapter);
-	if (err) {
-		dev_err(&pdev->dev, "Invalid q_vector to ring mapping\n");
-		goto err_map_queues;
-	}
-
+	igb_cache_ring_register(adapter);
 
 	return 0;
-err_map_queues:
-	igb_free_queues(adapter);
-err_alloc_queues:
-	igb_free_q_vectors(adapter);
+
 err_alloc_q_vectors:
 	igb_reset_interrupt_capability(adapter);
 	return err;
@@ -1229,29 +1341,17 @@ static int igb_request_irq(struct igb_adapter *adapter)
 		if (!err)
 			goto request_done;
 		/* fall back to MSI */
-		igb_clear_interrupt_scheme(adapter);
-		if (!pci_enable_msi(pdev))
-			adapter->flags |= IGB_FLAG_HAS_MSI;
 		igb_free_all_tx_resources(adapter);
 		igb_free_all_rx_resources(adapter);
-		adapter->num_tx_queues = 1;
-		adapter->num_rx_queues = 1;
-		adapter->num_q_vectors = 1;
-		err = igb_alloc_q_vectors(adapter);
-		if (err) {
-			dev_err(&pdev->dev,
-			        "Unable to allocate memory for vectors\n");
-			goto request_done;
-		}
-		err = igb_alloc_queues(adapter);
-		if (err) {
-			dev_err(&pdev->dev,
-			        "Unable to allocate memory for queues\n");
-			igb_free_q_vectors(adapter);
+
+		igb_clear_interrupt_scheme(adapter);
+		err = igb_init_interrupt_scheme(adapter, false);
+		if (err)
 			goto request_done;
-		}
+
 		igb_setup_all_tx_resources(adapter);
 		igb_setup_all_rx_resources(adapter);
+		igb_configure(adapter);
 	}
 
 	igb_assign_vector(adapter->q_vector[0], 0);
@@ -1587,8 +1687,7 @@ void igb_reset(struct igb_adapter *adapter)
 	struct e1000_hw *hw = &adapter->hw;
 	struct e1000_mac_info *mac = &hw->mac;
 	struct e1000_fc_info *fc = &hw->fc;
-	u32 pba = 0, tx_space, min_tx_space, min_rx_space;
-	u16 hwm;
+	u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm;
 
 	/* Repartition Pba for greater than 9k mtu
 	 * To take effect CTRL.RST is required.
@@ -1663,7 +1762,7 @@ void igb_reset(struct igb_adapter *adapter)
 	hwm = min(((pba << 10) * 9 / 10),
 			((pba << 10) - 2 * adapter->max_frame_size));
 
-	fc->high_water = hwm & 0xFFF0;	/* 16-byte granularity */
+	fc->high_water = hwm & 0xFFFFFFF0;	/* 16-byte granularity */
 	fc->low_water = fc->high_water - 16;
 	fc->pause_time = 0xFFFF;
 	fc->send_xon = 1;
@@ -1698,6 +1797,18 @@ void igb_reset(struct igb_adapter *adapter)
 		igb_force_mac_fc(hw);
 
 	igb_init_dmac(adapter, pba);
+#ifdef CONFIG_IGB_HWMON
+	/* Re-initialize the thermal sensor on i350 devices. */
+	if (!test_bit(__IGB_DOWN, &adapter->state)) {
+		if (mac->type == e1000_i350 && hw->bus.func == 0) {
+			/* If present, re-initialize the external thermal sensor
+			 * interface.
+			 */
+			if (adapter->ets)
+				mac->ops.init_thermal_sensor_thresh(hw);
+		}
+	}
+#endif
 	if (!netif_running(adapter->netdev))
 		igb_power_down_link(adapter);
 
@@ -1706,10 +1817,8 @@ void igb_reset(struct igb_adapter *adapter)
 	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
 	wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
 
-#ifdef CONFIG_IGB_PTP
 	/* Re-enable PTP, where applicable. */
 	igb_ptp_reset(adapter);
-#endif /* CONFIG_IGB_PTP */
 
 	igb_get_phy_info(hw);
 }
@@ -1783,61 +1892,64 @@ static const struct net_device_ops igb_netdev_ops = {
 void igb_set_fw_version(struct igb_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
-	u16 eeprom_verh, eeprom_verl, comb_verh, comb_verl, comb_offset;
-	u16 major, build, patch, fw_version;
-	u32 etrack_id;
-
-	hw->nvm.ops.read(hw, 5, 1, &fw_version);
-	if (adapter->hw.mac.type != e1000_i211) {
-		hw->nvm.ops.read(hw, NVM_ETRACK_WORD, 1, &eeprom_verh);
-		hw->nvm.ops.read(hw, (NVM_ETRACK_WORD + 1), 1, &eeprom_verl);
-		etrack_id = (eeprom_verh << IGB_ETRACK_SHIFT) | eeprom_verl;
-
-		/* combo image version needs to be found */
-		hw->nvm.ops.read(hw, NVM_COMB_VER_PTR, 1, &comb_offset);
-		if ((comb_offset != 0x0) &&
-		    (comb_offset != IGB_NVM_VER_INVALID)) {
-			hw->nvm.ops.read(hw, (NVM_COMB_VER_OFF + comb_offset
-					 + 1), 1, &comb_verh);
-			hw->nvm.ops.read(hw, (NVM_COMB_VER_OFF + comb_offset),
-					 1, &comb_verl);
-
-			/* Only display Option Rom if it exists and is valid */
-			if ((comb_verh && comb_verl) &&
-			    ((comb_verh != IGB_NVM_VER_INVALID) &&
-			     (comb_verl != IGB_NVM_VER_INVALID))) {
-				major = comb_verl >> IGB_COMB_VER_SHFT;
-				build = (comb_verl << IGB_COMB_VER_SHFT) |
-					(comb_verh >> IGB_COMB_VER_SHFT);
-				patch = comb_verh & IGB_COMB_VER_MASK;
-				snprintf(adapter->fw_version,
-					 sizeof(adapter->fw_version),
-					 "%d.%d%d, 0x%08x, %d.%d.%d",
-					 (fw_version & IGB_MAJOR_MASK) >>
-					 IGB_MAJOR_SHIFT,
-					 (fw_version & IGB_MINOR_MASK) >>
-					 IGB_MINOR_SHIFT,
-					 (fw_version & IGB_BUILD_MASK),
-					 etrack_id, major, build, patch);
-				goto out;
-			}
-		}
-		snprintf(adapter->fw_version, sizeof(adapter->fw_version),
-			 "%d.%d%d, 0x%08x",
-			 (fw_version & IGB_MAJOR_MASK) >> IGB_MAJOR_SHIFT,
-			 (fw_version & IGB_MINOR_MASK) >> IGB_MINOR_SHIFT,
-			 (fw_version & IGB_BUILD_MASK), etrack_id);
-	} else {
+	struct e1000_fw_version fw;
+
+	igb_get_fw_version(hw, &fw);
+
+	switch (hw->mac.type) {
+	case e1000_i211:
 		snprintf(adapter->fw_version, sizeof(adapter->fw_version),
-			 "%d.%d%d",
-			 (fw_version & IGB_MAJOR_MASK) >> IGB_MAJOR_SHIFT,
-			 (fw_version & IGB_MINOR_MASK) >> IGB_MINOR_SHIFT,
-			 (fw_version & IGB_BUILD_MASK));
+			 "%2d.%2d-%d",
+			 fw.invm_major, fw.invm_minor, fw.invm_img_type);
+		break;
+
+	default:
+		/* if option is rom valid, display its version too */
+		if (fw.or_valid) {
+			snprintf(adapter->fw_version,
+				 sizeof(adapter->fw_version),
+				 "%d.%d, 0x%08x, %d.%d.%d",
+				 fw.eep_major, fw.eep_minor, fw.etrack_id,
+				 fw.or_major, fw.or_build, fw.or_patch);
+		/* no option rom */
+		} else {
+			snprintf(adapter->fw_version,
+				 sizeof(adapter->fw_version),
+				 "%d.%d, 0x%08x",
+				 fw.eep_major, fw.eep_minor, fw.etrack_id);
+		}
+		break;
 	}
-out:
 	return;
 }
 
+/*  igb_init_i2c - Init I2C interface
+ *  @adapter: pointer to adapter structure
+ *
+ */
+static s32 igb_init_i2c(struct igb_adapter *adapter)
+{
+	s32 status = E1000_SUCCESS;
+
+	/* I2C interface supported on i350 devices */
+	if (adapter->hw.mac.type != e1000_i350)
+		return E1000_SUCCESS;
+
+	/* Initialize the i2c bus which is controlled by the registers.
+	 * This bus will use the i2c_algo_bit structue that implements
+	 * the protocol through toggling of the 4 bits in the register.
+	 */
+	adapter->i2c_adap.owner = THIS_MODULE;
+	adapter->i2c_algo = igb_i2c_algo;
+	adapter->i2c_algo.data = adapter;
+	adapter->i2c_adap.algo_data = &adapter->i2c_algo;
+	adapter->i2c_adap.dev.parent = &adapter->pdev->dev;
+	strlcpy(adapter->i2c_adap.name, "igb BB",
+		sizeof(adapter->i2c_adap.name));
+	status = i2c_bit_add_bus(&adapter->i2c_adap);
+	return status;
+}
+
 /**
  * igb_probe - Device Initialization Routine
  * @pdev: PCI device information struct
@@ -1849,8 +1961,7 @@ out:
  * 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)
+static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct net_device *netdev;
 	struct igb_adapter *adapter;
@@ -1861,7 +1972,6 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
 	unsigned long mmio_start, mmio_len;
 	int err, pci_using_dac;
-	u16 eeprom_apme_mask = IGB_EEPROM_APME;
 	u8 part_str[E1000_PBANUM_LENGTH];
 
 	/* Catch broken hardware that put the wrong VF device ID in
@@ -2040,9 +2150,8 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 		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)) {
+	if (!is_valid_ether_addr(netdev->dev_addr)) {
 		dev_err(&pdev->dev, "Invalid MAC Address\n");
 		err = -EIO;
 		goto err_eeprom;
@@ -2069,28 +2178,27 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 
 	igb_validate_mdi_setting(hw);
 
-	/* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
-	 * enable the ACPI Magic Packet filter
-	 */
-
+	/* By default, support wake on port A */
 	if (hw->bus.func == 0)
-		hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
-	else if (hw->mac.type >= e1000_82580)
+		adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
+
+	/* Check the NVM for wake support on non-port A ports */
+	if (hw->mac.type >= e1000_82580)
 		hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
 		                 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
 		                 &eeprom_data);
 	else if (hw->bus.func == 1)
 		hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
 
-	if (eeprom_data & eeprom_apme_mask)
-		adapter->eeprom_wol |= E1000_WUFC_MAG;
+	if (eeprom_data & IGB_EEPROM_APME)
+		adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
 
 	/* 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;
+		adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
 		break;
 	case E1000_DEV_ID_82575EB_FIBER_SERDES:
 	case E1000_DEV_ID_82576_FIBER:
@@ -2098,28 +2206,49 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 		/* 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;
+			adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
 		break;
 	case E1000_DEV_ID_82576_QUAD_COPPER:
 	case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
 		/* if quad port adapter, disable WoL on all but port A */
 		if (global_quad_port_a != 0)
-			adapter->eeprom_wol = 0;
+			adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
 		else
 			adapter->flags |= IGB_FLAG_QUAD_PORT_A;
 		/* Reset for multiple quad port adapters */
 		if (++global_quad_port_a == 4)
 			global_quad_port_a = 0;
 		break;
+	default:
+		/* If the device can't wake, don't set software support */
+		if (!device_can_wakeup(&adapter->pdev->dev))
+			adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
 	}
 
 	/* initialize the wol settings based on the eeprom settings */
-	adapter->wol = adapter->eeprom_wol;
-	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+	if (adapter->flags & IGB_FLAG_WOL_SUPPORTED)
+		adapter->wol |= E1000_WUFC_MAG;
+
+	/* Some vendors want WoL disabled by default, but still supported */
+	if ((hw->mac.type == e1000_i350) &&
+	    (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
+		adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
+		adapter->wol = 0;
+	}
+
+	device_set_wakeup_enable(&adapter->pdev->dev,
+				 adapter->flags & IGB_FLAG_WOL_SUPPORTED);
 
 	/* reset the hardware with the new settings */
 	igb_reset(adapter);
 
+	/* Init the I2C interface */
+	err = igb_init_i2c(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "failed to init i2c interface\n");
+		goto err_eeprom;
+	}
+
 	/* let the f/w know that the h/w is now under the control of the
 	 * driver. */
 	igb_get_hw_control(adapter);
@@ -2140,11 +2269,29 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	}
 
 #endif
+#ifdef CONFIG_IGB_HWMON
+	/* Initialize the thermal sensor on i350 devices. */
+	if (hw->mac.type == e1000_i350 && hw->bus.func == 0) {
+		u16 ets_word;
 
-#ifdef CONFIG_IGB_PTP
+		/*
+		 * Read the NVM to determine if this i350 device supports an
+		 * external thermal sensor.
+		 */
+		hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word);
+		if (ets_word != 0x0000 && ets_word != 0xFFFF)
+			adapter->ets = true;
+		else
+			adapter->ets = false;
+		if (igb_sysfs_init(adapter))
+			dev_err(&pdev->dev,
+				"failed to allocate sysfs resources\n");
+	} else {
+		adapter->ets = false;
+	}
+#endif
 	/* do hw tstamp init after resetting */
 	igb_ptp_init(adapter);
-#endif /* CONFIG_IGB_PTP */
 
 	dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
 	/* print bus type/speed/width info */
@@ -2183,6 +2330,7 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 
 err_register:
 	igb_release_hw_control(adapter);
+	memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap));
 err_eeprom:
 	if (!igb_check_reset_block(hw))
 		igb_reset_phy(hw);
@@ -2203,6 +2351,111 @@ err_dma:
 	return err;
 }
 
+#ifdef CONFIG_PCI_IOV
+static int  igb_disable_sriov(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;
+
+	/* reclaim resources allocated to VFs */
+	if (adapter->vf_data) {
+		/* disable iov and allow time for transactions to clear */
+		if (igb_vfs_are_assigned(adapter)) {
+			dev_warn(&pdev->dev,
+				 "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n");
+			return -EPERM;
+		} else {
+			pci_disable_sriov(pdev);
+			msleep(500);
+		}
+
+		kfree(adapter->vf_data);
+		adapter->vf_data = NULL;
+		adapter->vfs_allocated_count = 0;
+		wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
+		wrfl();
+		msleep(100);
+		dev_info(&pdev->dev, "IOV Disabled\n");
+
+		/* Re-enable DMA Coalescing flag since IOV is turned off */
+		adapter->flags |= IGB_FLAG_DMAC;
+	}
+
+	return 0;
+}
+
+static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	int old_vfs = pci_num_vf(pdev);
+	int err = 0;
+	int i;
+
+	if (!num_vfs)
+		goto out;
+	else if (old_vfs && old_vfs == num_vfs)
+		goto out;
+	else if (old_vfs && old_vfs != num_vfs)
+		err = igb_disable_sriov(pdev);
+
+	if (err)
+		goto out;
+
+	if (num_vfs > 7) {
+		err = -EPERM;
+		goto out;
+	}
+
+	adapter->vfs_allocated_count = num_vfs;
+
+	adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
+				sizeof(struct vf_data_storage), GFP_KERNEL);
+
+	/* if allocation failed then we do not support SR-IOV */
+	if (!adapter->vf_data) {
+		adapter->vfs_allocated_count = 0;
+		dev_err(&pdev->dev,
+			"Unable to allocate memory for VF Data Storage\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = pci_enable_sriov(pdev, adapter->vfs_allocated_count);
+	if (err)
+		goto err_out;
+
+	dev_info(&pdev->dev, "%d VFs allocated\n",
+		 adapter->vfs_allocated_count);
+	for (i = 0; i < adapter->vfs_allocated_count; i++)
+		igb_vf_configure(adapter, i);
+
+	/* DMA Coalescing is not supported in IOV mode. */
+	adapter->flags &= ~IGB_FLAG_DMAC;
+	goto out;
+
+err_out:
+	kfree(adapter->vf_data);
+	adapter->vf_data = NULL;
+	adapter->vfs_allocated_count = 0;
+out:
+	return err;
+}
+
+#endif
+/*
+ *  igb_remove_i2c - Cleanup  I2C interface
+ *  @adapter: pointer to adapter structure
+ *
+ */
+static void igb_remove_i2c(struct igb_adapter *adapter)
+{
+
+	/* free the adapter bus structure */
+	i2c_del_adapter(&adapter->i2c_adap);
+}
+
 /**
  * igb_remove - Device Removal Routine
  * @pdev: PCI device information struct
@@ -2212,17 +2465,18 @@ err_dma:
  * Hot-Plug event, or because the driver is going to be removed from
  * memory.
  **/
-static void __devexit igb_remove(struct pci_dev *pdev)
+static void igb_remove(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;
 
 	pm_runtime_get_noresume(&pdev->dev);
-#ifdef CONFIG_IGB_PTP
+#ifdef CONFIG_IGB_HWMON
+	igb_sysfs_exit(adapter);
+#endif
+	igb_remove_i2c(adapter);
 	igb_ptp_stop(adapter);
-#endif /* CONFIG_IGB_PTP */
-
 	/*
 	 * The watchdog timer may be rescheduled, so explicitly
 	 * disable watchdog from being rescheduled.
@@ -2252,23 +2506,7 @@ static void __devexit igb_remove(struct pci_dev *pdev)
 	igb_clear_interrupt_scheme(adapter);
 
 #ifdef CONFIG_PCI_IOV
-	/* reclaim resources allocated to VFs */
-	if (adapter->vf_data) {
-		/* disable iov and allow time for transactions to clear */
-		if (igb_vfs_are_assigned(adapter)) {
-			dev_info(&pdev->dev, "Unloading driver while VFs are assigned - VFs will not be deallocated\n");
-		} else {
-			pci_disable_sriov(pdev);
-			msleep(500);
-		}
-
-		kfree(adapter->vf_data);
-		adapter->vf_data = NULL;
-		wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
-		wrfl();
-		msleep(100);
-		dev_info(&pdev->dev, "IOV Disabled\n");
-	}
+	igb_disable_sriov(pdev);
 #endif
 
 	iounmap(hw->hw_addr);
@@ -2294,108 +2532,27 @@ static void __devexit igb_remove(struct pci_dev *pdev)
  * mor expensive time wise to disable SR-IOV than it is to allocate and free
  * the memory for the VFs.
  **/
-static void __devinit igb_probe_vfs(struct igb_adapter * adapter)
+static void igb_probe_vfs(struct igb_adapter *adapter)
 {
 #ifdef CONFIG_PCI_IOV
 	struct pci_dev *pdev = adapter->pdev;
 	struct e1000_hw *hw = &adapter->hw;
-	int old_vfs = pci_num_vf(adapter->pdev);
-	int i;
 
 	/* Virtualization features not supported on i210 family. */
 	if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
 		return;
 
-	if (old_vfs) {
-		dev_info(&pdev->dev, "%d pre-allocated VFs found - override "
-			 "max_vfs setting of %d\n", old_vfs, max_vfs);
-		adapter->vfs_allocated_count = old_vfs;
-	}
-
-	if (!adapter->vfs_allocated_count)
-		return;
-
-	adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
-				sizeof(struct vf_data_storage), GFP_KERNEL);
+	igb_enable_sriov(pdev, max_vfs);
+	pci_sriov_set_totalvfs(pdev, 7);
 
-	/* if allocation failed then we do not support SR-IOV */
-	if (!adapter->vf_data) {
-		adapter->vfs_allocated_count = 0;
-		dev_err(&pdev->dev, "Unable to allocate memory for VF "
-			"Data Storage\n");
-		goto out;
-	}
-
-	if (!old_vfs) {
-		if (pci_enable_sriov(pdev, adapter->vfs_allocated_count))
-			goto err_out;
-	}
-	dev_info(&pdev->dev, "%d VFs allocated\n",
-		 adapter->vfs_allocated_count);
-	for (i = 0; i < adapter->vfs_allocated_count; i++)
-		igb_vf_configure(adapter, i);
-
-	/* DMA Coalescing is not supported in IOV mode. */
-	adapter->flags &= ~IGB_FLAG_DMAC;
-	goto out;
-err_out:
-	kfree(adapter->vf_data);
-	adapter->vf_data = NULL;
-	adapter->vfs_allocated_count = 0;
-out:
-	return;
 #endif /* CONFIG_PCI_IOV */
 }
 
-/**
- * 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)
+static void igb_init_queue_configuration(struct igb_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
-	struct net_device *netdev = adapter->netdev;
-	struct pci_dev *pdev = adapter->pdev;
 	u32 max_rss_queues;
 
-	pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
-
-	/* set default ring sizes */
-	adapter->tx_ring_count = IGB_DEFAULT_TXD;
-	adapter->rx_ring_count = IGB_DEFAULT_RXD;
-
-	/* set default ITR values */
-	adapter->rx_itr_setting = IGB_DEFAULT_ITR;
-	adapter->tx_itr_setting = IGB_DEFAULT_ITR;
-
-	/* set default work limits */
-	adapter->tx_work_limit = IGB_DEFAULT_TX_WORK;
-
-	adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN +
-				  VLAN_HLEN;
-	adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
-
-	spin_lock_init(&adapter->stats64_lock);
-#ifdef CONFIG_PCI_IOV
-	switch (hw->mac.type) {
-	case e1000_82576:
-	case e1000_i350:
-		if (max_vfs > 7) {
-			dev_warn(&pdev->dev,
-				 "Maximum of 7 VFs per PF, using max\n");
-			adapter->vfs_allocated_count = 7;
-		} else
-			adapter->vfs_allocated_count = max_vfs;
-		break;
-	default:
-		break;
-	}
-#endif /* CONFIG_PCI_IOV */
-
 	/* Determine the maximum number of RSS queues supported. */
 	switch (hw->mac.type) {
 	case e1000_i211:
@@ -2454,14 +2611,67 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter)
 			adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
 		break;
 	}
+}
+
+/**
+ * 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 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);
+
+	/* set default ring sizes */
+	adapter->tx_ring_count = IGB_DEFAULT_TXD;
+	adapter->rx_ring_count = IGB_DEFAULT_RXD;
+
+	/* set default ITR values */
+	adapter->rx_itr_setting = IGB_DEFAULT_ITR;
+	adapter->tx_itr_setting = IGB_DEFAULT_ITR;
+
+	/* set default work limits */
+	adapter->tx_work_limit = IGB_DEFAULT_TX_WORK;
+
+	adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN +
+				  VLAN_HLEN;
+	adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+
+	spin_lock_init(&adapter->stats64_lock);
+#ifdef CONFIG_PCI_IOV
+	switch (hw->mac.type) {
+	case e1000_82576:
+	case e1000_i350:
+		if (max_vfs > 7) {
+			dev_warn(&pdev->dev,
+				 "Maximum of 7 VFs per PF, using max\n");
+			adapter->vfs_allocated_count = 7;
+		} else
+			adapter->vfs_allocated_count = max_vfs;
+		if (adapter->vfs_allocated_count)
+			dev_warn(&pdev->dev,
+				 "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n");
+		break;
+	default:
+		break;
+	}
+#endif /* CONFIG_PCI_IOV */
+
+	igb_init_queue_configuration(adapter);
 
 	/* Setup and initialize a copy of the hw vlan table array */
-	adapter->shadow_vfta = kzalloc(sizeof(u32) *
-				E1000_VLAN_FILTER_TBL_SIZE,
-				GFP_ATOMIC);
+	adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32),
+				       GFP_ATOMIC);
 
 	/* This call may decrease the number of queues */
-	if (igb_init_interrupt_scheme(adapter)) {
+	if (igb_init_interrupt_scheme(adapter, true)) {
 		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
 		return -ENOMEM;
 	}
@@ -2531,6 +2741,17 @@ static int __igb_open(struct net_device *netdev, bool resuming)
 	if (err)
 		goto err_req_irq;
 
+	/* Notify the stack of the actual queue counts. */
+	err = netif_set_real_num_tx_queues(adapter->netdev,
+					   adapter->num_tx_queues);
+	if (err)
+		goto err_set_queues;
+
+	err = netif_set_real_num_rx_queues(adapter->netdev,
+					   adapter->num_rx_queues);
+	if (err)
+		goto err_set_queues;
+
 	/* From here on the code is the same as igb_up() */
 	clear_bit(__IGB_DOWN, &adapter->state);
 
@@ -2560,6 +2781,8 @@ static int __igb_open(struct net_device *netdev, bool resuming)
 
 	return 0;
 
+err_set_queues:
+	igb_free_irq(adapter);
 err_req_irq:
 	igb_release_hw_control(adapter);
 	igb_power_down_link(adapter);
@@ -2637,10 +2860,8 @@ int igb_setup_tx_resources(struct igb_ring *tx_ring)
 	tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
 	tx_ring->size = ALIGN(tx_ring->size, 4096);
 
-	tx_ring->desc = dma_alloc_coherent(dev,
-					   tx_ring->size,
-					   &tx_ring->dma,
-					   GFP_KERNEL);
+	tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
+					   &tx_ring->dma, GFP_KERNEL);
 	if (!tx_ring->desc)
 		goto err;
 
@@ -2777,18 +2998,16 @@ int igb_setup_rx_resources(struct igb_ring *rx_ring)
 	if (!rx_ring->rx_buffer_info)
 		goto err;
 
-
 	/* Round up to nearest 4K */
 	rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc);
 	rx_ring->size = ALIGN(rx_ring->size, 4096);
 
-	rx_ring->desc = dma_alloc_coherent(dev,
-					   rx_ring->size,
-					   &rx_ring->dma,
-					   GFP_KERNEL);
+	rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
+					   &rx_ring->dma, GFP_KERNEL);
 	if (!rx_ring->desc)
 		goto err;
 
+	rx_ring->next_to_alloc = 0;
 	rx_ring->next_to_clean = 0;
 	rx_ring->next_to_use = 0;
 
@@ -2893,18 +3112,21 @@ static void igb_setup_mrqc(struct igb_adapter *adapter)
 
 	/* Don't need to set TUOFL or IPOFL, they default to 1 */
 	wr32(E1000_RXCSUM, rxcsum);
-	/*
-	 * Generate RSS hash based on TCP port numbers and/or
-	 * IPv4/v6 src and dst addresses since UDP cannot be
-	 * hashed reliably due to IP fragmentation
-	 */
 
+	/* Generate RSS hash based on packet types, TCP/UDP
+	 * port numbers and/or IPv4/v6 src and dst addresses
+	 */
 	mrqc = E1000_MRQC_RSS_FIELD_IPV4 |
 	       E1000_MRQC_RSS_FIELD_IPV4_TCP |
 	       E1000_MRQC_RSS_FIELD_IPV6 |
 	       E1000_MRQC_RSS_FIELD_IPV6_TCP |
 	       E1000_MRQC_RSS_FIELD_IPV6_TCP_EX;
 
+	if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
+		mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP;
+	if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
+		mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP;
+
 	/* If VMDq is enabled then we set the appropriate mode for that, else
 	 * we default to RSS so that an RSS hash is calculated per packet even
 	 * if we are only using one queue */
@@ -3106,16 +3328,10 @@ void igb_configure_rx_ring(struct igb_adapter *adapter,
 
 	/* set descriptor configuration */
 	srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
-#if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384
-	srrctl |= IGB_RXBUFFER_16384 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
-#else
-	srrctl |= (PAGE_SIZE / 2) >> E1000_SRRCTL_BSIZEPKT_SHIFT;
-#endif
-	srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
-#ifdef CONFIG_IGB_PTP
+	srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT;
+	srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
 	if (hw->mac.type >= e1000_82580)
 		srrctl |= E1000_SRRCTL_TIMESTAMP;
-#endif /* CONFIG_IGB_PTP */
 	/* Only set Drop Enable if we are supporting multiple queues */
 	if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1)
 		srrctl |= E1000_SRRCTL_DROP_EN;
@@ -3134,6 +3350,20 @@ void igb_configure_rx_ring(struct igb_adapter *adapter,
 	wr32(E1000_RXDCTL(reg_idx), rxdctl);
 }
 
+static void igb_set_rx_buffer_len(struct igb_adapter *adapter,
+				  struct igb_ring *rx_ring)
+{
+#define IGB_MAX_BUILD_SKB_SIZE \
+	(SKB_WITH_OVERHEAD(IGB_RX_BUFSZ) - \
+	 (NET_SKB_PAD + NET_IP_ALIGN + IGB_TS_HDR_LEN))
+
+	/* set build_skb flag */
+	if (adapter->max_frame_size <= IGB_MAX_BUILD_SKB_SIZE)
+		set_ring_build_skb_enabled(rx_ring);
+	else
+		clear_ring_build_skb_enabled(rx_ring);
+}
+
 /**
  * igb_configure_rx - Configure receive Unit after Reset
  * @adapter: board private structure
@@ -3153,8 +3383,11 @@ static void igb_configure_rx(struct igb_adapter *adapter)
 
 	/* 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++)
-		igb_configure_rx_ring(adapter, adapter->rx_ring[i]);
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct igb_ring *rx_ring = adapter->rx_ring[i];
+		igb_set_rx_buffer_len(adapter, rx_ring);
+		igb_configure_rx_ring(adapter, rx_ring);
+	}
 }
 
 /**
@@ -3305,36 +3538,27 @@ static void igb_clean_rx_ring(struct igb_ring *rx_ring)
 	unsigned long size;
 	u16 i;
 
+	if (rx_ring->skb)
+		dev_kfree_skb(rx_ring->skb);
+	rx_ring->skb = NULL;
+
 	if (!rx_ring->rx_buffer_info)
 		return;
 
 	/* Free all the Rx ring sk_buffs */
 	for (i = 0; i < rx_ring->count; i++) {
 		struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i];
-		if (buffer_info->dma) {
-			dma_unmap_single(rx_ring->dev,
-			                 buffer_info->dma,
-					 IGB_RX_HDR_LEN,
-					 DMA_FROM_DEVICE);
-			buffer_info->dma = 0;
-		}
 
-		if (buffer_info->skb) {
-			dev_kfree_skb(buffer_info->skb);
-			buffer_info->skb = NULL;
-		}
-		if (buffer_info->page_dma) {
-			dma_unmap_page(rx_ring->dev,
-			               buffer_info->page_dma,
-				       PAGE_SIZE / 2,
-				       DMA_FROM_DEVICE);
-			buffer_info->page_dma = 0;
-		}
-		if (buffer_info->page) {
-			put_page(buffer_info->page);
-			buffer_info->page = NULL;
-			buffer_info->page_offset = 0;
-		}
+		if (!buffer_info->page)
+			continue;
+
+		dma_unmap_page(rx_ring->dev,
+			       buffer_info->dma,
+			       PAGE_SIZE,
+			       DMA_FROM_DEVICE);
+		__free_page(buffer_info->page);
+
+		buffer_info->page = NULL;
 	}
 
 	size = sizeof(struct igb_rx_buffer) * rx_ring->count;
@@ -3343,6 +3567,7 @@ static void igb_clean_rx_ring(struct igb_ring *rx_ring)
 	/* Zero out the descriptor ring */
 	memset(rx_ring->desc, 0, rx_ring->size);
 
+	rx_ring->next_to_alloc = 0;
 	rx_ring->next_to_clean = 0;
 	rx_ring->next_to_use = 0;
 }
@@ -3779,6 +4004,7 @@ static void igb_watchdog_task(struct work_struct *work)
 	}
 
 	igb_spoof_check(adapter);
+	igb_ptp_rx_hang(adapter);
 
 	/* Reset the timer */
 	if (!test_bit(__IGB_DOWN, &adapter->state))
@@ -4028,6 +4254,9 @@ static int igb_tso(struct igb_ring *tx_ring,
 	u32 vlan_macip_lens, type_tucmd;
 	u32 mss_l4len_idx, l4len;
 
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return 0;
+
 	if (!skb_is_gso(skb))
 		return 0;
 
@@ -4148,26 +4377,32 @@ static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first)
 	igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
 }
 
-static __le32 igb_tx_cmd_type(u32 tx_flags)
+#define IGB_SET_FLAG(_input, _flag, _result) \
+	((_flag <= _result) ? \
+	 ((u32)(_input & _flag) * (_result / _flag)) : \
+	 ((u32)(_input & _flag) / (_flag / _result)))
+
+static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
 {
 	/* set type for advanced descriptor with frame checksum insertion */
-	__le32 cmd_type = cpu_to_le32(E1000_ADVTXD_DTYP_DATA |
-				      E1000_ADVTXD_DCMD_IFCS |
-				      E1000_ADVTXD_DCMD_DEXT);
+	u32 cmd_type = E1000_ADVTXD_DTYP_DATA |
+		       E1000_ADVTXD_DCMD_DEXT |
+		       E1000_ADVTXD_DCMD_IFCS;
 
 	/* set HW vlan bit if vlan is present */
-	if (tx_flags & IGB_TX_FLAGS_VLAN)
-		cmd_type |= cpu_to_le32(E1000_ADVTXD_DCMD_VLE);
+	cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN,
+				 (E1000_ADVTXD_DCMD_VLE));
+
+	/* set segmentation bits for TSO */
+	cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO,
+				 (E1000_ADVTXD_DCMD_TSE));
 
-#ifdef CONFIG_IGB_PTP
 	/* set timestamp bit if present */
-	if (unlikely(tx_flags & IGB_TX_FLAGS_TSTAMP))
-		cmd_type |= cpu_to_le32(E1000_ADVTXD_MAC_TSTAMP);
-#endif /* CONFIG_IGB_PTP */
+	cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP,
+				 (E1000_ADVTXD_MAC_TSTAMP));
 
-	/* set segmentation bits for TSO */
-	if (tx_flags & IGB_TX_FLAGS_TSO)
-		cmd_type |= cpu_to_le32(E1000_ADVTXD_DCMD_TSE);
+	/* insert frame checksum */
+	cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS);
 
 	return cmd_type;
 }
@@ -4178,30 +4413,23 @@ static void igb_tx_olinfo_status(struct igb_ring *tx_ring,
 {
 	u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT;
 
-	/* 82575 requires a unique index per ring if any offload is enabled */
-	if ((tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_VLAN)) &&
-	    test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
+	/* 82575 requires a unique index per ring */
+	if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
 		olinfo_status |= tx_ring->reg_idx << 4;
 
 	/* insert L4 checksum */
-	if (tx_flags & IGB_TX_FLAGS_CSUM) {
-		olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+	olinfo_status |= IGB_SET_FLAG(tx_flags,
+				      IGB_TX_FLAGS_CSUM,
+				      (E1000_TXD_POPTS_TXSM << 8));
 
-		/* insert IPv4 checksum */
-		if (tx_flags & IGB_TX_FLAGS_IPV4)
-			olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
-	}
+	/* insert IPv4 checksum */
+	olinfo_status |= IGB_SET_FLAG(tx_flags,
+				      IGB_TX_FLAGS_IPV4,
+				      (E1000_TXD_POPTS_IXSM << 8));
 
 	tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
 }
 
-/*
- * The largest size we can write to the descriptor is 65535.  In order to
- * maintain a power of two alignment we have to limit ourselves to 32K.
- */
-#define IGB_MAX_TXD_PWR	15
-#define IGB_MAX_DATA_PER_TXD	(1<<IGB_MAX_TXD_PWR)
-
 static void igb_tx_map(struct igb_ring *tx_ring,
 		       struct igb_tx_buffer *first,
 		       const u8 hdr_len)
@@ -4209,33 +4437,37 @@ static void igb_tx_map(struct igb_ring *tx_ring,
 	struct sk_buff *skb = first->skb;
 	struct igb_tx_buffer *tx_buffer;
 	union e1000_adv_tx_desc *tx_desc;
+	struct skb_frag_struct *frag;
 	dma_addr_t dma;
-	struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
-	unsigned int data_len = skb->data_len;
-	unsigned int size = skb_headlen(skb);
-	unsigned int paylen = skb->len - hdr_len;
-	__le32 cmd_type;
+	unsigned int data_len, size;
 	u32 tx_flags = first->tx_flags;
+	u32 cmd_type = igb_tx_cmd_type(skb, tx_flags);
 	u16 i = tx_ring->next_to_use;
 
 	tx_desc = IGB_TX_DESC(tx_ring, i);
 
-	igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, paylen);
-	cmd_type = igb_tx_cmd_type(tx_flags);
+	igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len);
+
+	size = skb_headlen(skb);
+	data_len = skb->data_len;
 
 	dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
-	if (dma_mapping_error(tx_ring->dev, dma))
-		goto dma_error;
 
-	/* record length, and DMA address */
-	dma_unmap_len_set(first, len, size);
-	dma_unmap_addr_set(first, dma, dma);
-	tx_desc->read.buffer_addr = cpu_to_le64(dma);
+	tx_buffer = first;
+
+	for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
+		if (dma_mapping_error(tx_ring->dev, dma))
+			goto dma_error;
+
+		/* record length, and DMA address */
+		dma_unmap_len_set(tx_buffer, len, size);
+		dma_unmap_addr_set(tx_buffer, dma, dma);
+
+		tx_desc->read.buffer_addr = cpu_to_le64(dma);
 
-	for (;;) {
 		while (unlikely(size > IGB_MAX_DATA_PER_TXD)) {
 			tx_desc->read.cmd_type_len =
-				cmd_type | cpu_to_le32(IGB_MAX_DATA_PER_TXD);
+				cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD);
 
 			i++;
 			tx_desc++;
@@ -4243,18 +4475,18 @@ static void igb_tx_map(struct igb_ring *tx_ring,
 				tx_desc = IGB_TX_DESC(tx_ring, 0);
 				i = 0;
 			}
+			tx_desc->read.olinfo_status = 0;
 
 			dma += IGB_MAX_DATA_PER_TXD;
 			size -= IGB_MAX_DATA_PER_TXD;
 
-			tx_desc->read.olinfo_status = 0;
 			tx_desc->read.buffer_addr = cpu_to_le64(dma);
 		}
 
 		if (likely(!data_len))
 			break;
 
-		tx_desc->read.cmd_type_len = cmd_type | cpu_to_le32(size);
+		tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
 
 		i++;
 		tx_desc++;
@@ -4262,32 +4494,22 @@ static void igb_tx_map(struct igb_ring *tx_ring,
 			tx_desc = IGB_TX_DESC(tx_ring, 0);
 			i = 0;
 		}
+		tx_desc->read.olinfo_status = 0;
 
 		size = skb_frag_size(frag);
 		data_len -= size;
 
 		dma = skb_frag_dma_map(tx_ring->dev, frag, 0,
-				   size, DMA_TO_DEVICE);
-		if (dma_mapping_error(tx_ring->dev, dma))
-			goto dma_error;
+				       size, DMA_TO_DEVICE);
 
 		tx_buffer = &tx_ring->tx_buffer_info[i];
-		dma_unmap_len_set(tx_buffer, len, size);
-		dma_unmap_addr_set(tx_buffer, dma, dma);
-
-		tx_desc->read.olinfo_status = 0;
-		tx_desc->read.buffer_addr = cpu_to_le64(dma);
-
-		frag++;
 	}
 
-	netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
-
 	/* write last descriptor with RS and EOP bits */
-	cmd_type |= cpu_to_le32(size) | cpu_to_le32(IGB_TXD_DCMD);
-	if (unlikely(skb->no_fcs))
-		cmd_type &= ~(cpu_to_le32(E1000_ADVTXD_DCMD_IFCS));
-	tx_desc->read.cmd_type_len = cmd_type;
+	cmd_type |= size | IGB_TXD_DCMD;
+	tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
+
+	netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
 
 	/* set the timestamp */
 	first->time_stamp = jiffies;
@@ -4372,21 +4594,29 @@ static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
 netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
 				struct igb_ring *tx_ring)
 {
-#ifdef CONFIG_IGB_PTP
 	struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
-#endif /* CONFIG_IGB_PTP */
 	struct igb_tx_buffer *first;
 	int tso;
 	u32 tx_flags = 0;
+	u16 count = TXD_USE_COUNT(skb_headlen(skb));
 	__be16 protocol = vlan_get_protocol(skb);
 	u8 hdr_len = 0;
 
-	/* need: 1 descriptor per page,
+	/* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD,
+	 *       + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD,
 	 *       + 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(tx_ring, skb_shinfo(skb)->nr_frags + 4)) {
+	 * otherwise try next time
+	 */
+	if (NETDEV_FRAG_PAGE_MAX_SIZE > IGB_MAX_DATA_PER_TXD) {
+		unsigned short f;
+		for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
+			count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
+	} else {
+		count += skb_shinfo(skb)->nr_frags;
+	}
+
+	if (igb_maybe_stop_tx(tx_ring, count + 3)) {
 		/* this is a hard error */
 		return NETDEV_TX_BUSY;
 	}
@@ -4397,17 +4627,18 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
 	first->bytecount = skb->len;
 	first->gso_segs = 1;
 
-#ifdef CONFIG_IGB_PTP
+	skb_tx_timestamp(skb);
+
 	if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
 		     !(adapter->ptp_tx_skb))) {
 		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 		tx_flags |= IGB_TX_FLAGS_TSTAMP;
 
 		adapter->ptp_tx_skb = skb_get(skb);
+		adapter->ptp_tx_start = jiffies;
 		if (adapter->hw.mac.type == e1000_82576)
 			schedule_work(&adapter->ptp_tx_work);
 	}
-#endif /* CONFIG_IGB_PTP */
 
 	if (vlan_tx_tag_present(skb)) {
 		tx_flags |= IGB_TX_FLAGS_VLAN;
@@ -4427,7 +4658,7 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
 	igb_tx_map(tx_ring, first, hdr_len);
 
 	/* Make sure there is space in the ring for the next send. */
-	igb_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 4);
+	igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
 
 	return NETDEV_TX_OK;
 
@@ -4467,10 +4698,11 @@ static netdev_tx_t igb_xmit_frame(struct sk_buff *skb,
 	 * The minimum packet size with TCTL.PSP set is 17 so pad the skb
 	 * in order to meet this minimum size requirement.
 	 */
-	if (skb->len < 17) {
-		if (skb_padto(skb, 17))
+	if (unlikely(skb->len < 17)) {
+		if (skb_pad(skb, 17 - skb->len))
 			return NETDEV_TX_OK;
 		skb->len = 17;
+		skb_set_tail_pointer(skb, 17);
 	}
 
 	return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb));
@@ -4800,7 +5032,6 @@ static irqreturn_t igb_msix_other(int irq, void *data)
 			mod_timer(&adapter->watchdog_timer, jiffies + 1);
 	}
 
-#ifdef CONFIG_IGB_PTP
 	if (icr & E1000_ICR_TS) {
 		u32 tsicr = rd32(E1000_TSICR);
 
@@ -4811,7 +5042,6 @@ static irqreturn_t igb_msix_other(int irq, void *data)
 			schedule_work(&adapter->ptp_tx_work);
 		}
 	}
-#endif /* CONFIG_IGB_PTP */
 
 	wr32(E1000_EIMS, adapter->eims_other);
 
@@ -4851,45 +5081,63 @@ static irqreturn_t igb_msix_ring(int irq, void *data)
 }
 
 #ifdef CONFIG_IGB_DCA
+static void igb_update_tx_dca(struct igb_adapter *adapter,
+			      struct igb_ring *tx_ring,
+			      int cpu)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
+
+	if (hw->mac.type != e1000_82575)
+		txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT;
+
+	/*
+	 * We can enable relaxed ordering for reads, but not writes when
+	 * DCA is enabled.  This is due to a known issue in some chipsets
+	 * which will cause the DCA tag to be cleared.
+	 */
+	txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN |
+		  E1000_DCA_TXCTRL_DATA_RRO_EN |
+		  E1000_DCA_TXCTRL_DESC_DCA_EN;
+
+	wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl);
+}
+
+static void igb_update_rx_dca(struct igb_adapter *adapter,
+			      struct igb_ring *rx_ring,
+			      int cpu)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu);
+
+	if (hw->mac.type != e1000_82575)
+		rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT;
+
+	/*
+	 * We can enable relaxed ordering for reads, but not writes when
+	 * DCA is enabled.  This is due to a known issue in some chipsets
+	 * which will cause the DCA tag to be cleared.
+	 */
+	rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN |
+		  E1000_DCA_RXCTRL_DESC_DCA_EN;
+
+	wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl);
+}
+
 static void igb_update_dca(struct igb_q_vector *q_vector)
 {
 	struct igb_adapter *adapter = q_vector->adapter;
-	struct e1000_hw *hw = &adapter->hw;
 	int cpu = get_cpu();
 
 	if (q_vector->cpu == cpu)
 		goto out_no_update;
 
-	if (q_vector->tx.ring) {
-		int q = q_vector->tx.ring->reg_idx;
-		u32 dca_txctrl = rd32(E1000_DCA_TXCTRL(q));
-		if (hw->mac.type == e1000_82575) {
-			dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK;
-			dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
-		} else {
-			dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576;
-			dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) <<
-			              E1000_DCA_TXCTRL_CPUID_SHIFT;
-		}
-		dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN;
-		wr32(E1000_DCA_TXCTRL(q), dca_txctrl);
-	}
-	if (q_vector->rx.ring) {
-		int q = q_vector->rx.ring->reg_idx;
-		u32 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q));
-		if (hw->mac.type == e1000_82575) {
-			dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK;
-			dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
-		} else {
-			dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576;
-			dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) <<
-			              E1000_DCA_RXCTRL_CPUID_SHIFT;
-		}
-		dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN;
-		dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN;
-		dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN;
-		wr32(E1000_DCA_RXCTRL(q), dca_rxctrl);
-	}
+	if (q_vector->tx.ring)
+		igb_update_tx_dca(adapter, q_vector->tx.ring, cpu);
+
+	if (q_vector->rx.ring)
+		igb_update_rx_dca(adapter, q_vector->rx.ring, cpu);
+
 	q_vector->cpu = cpu;
 out_no_update:
 	put_cpu();
@@ -4964,7 +5212,7 @@ static int igb_vf_configure(struct igb_adapter *adapter, int vf)
 {
 	unsigned char mac_addr[ETH_ALEN];
 
-	eth_random_addr(mac_addr);
+	eth_zero_addr(mac_addr);
 	igb_set_vf_mac(adapter, vf, mac_addr);
 
 	return 0;
@@ -5317,9 +5565,9 @@ static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
 {
 	unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
 
-	/* generate a new mac address as we were hotplug removed/added */
+	/* clear mac address as we were hotplug removed/added */
 	if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC))
-		eth_random_addr(vf_mac);
+		eth_zero_addr(vf_mac);
 
 	/* process remaining reset events */
 	igb_vf_reset(adapter, vf);
@@ -5545,7 +5793,6 @@ static irqreturn_t igb_intr_msi(int irq, void *data)
 			mod_timer(&adapter->watchdog_timer, jiffies + 1);
 	}
 
-#ifdef CONFIG_IGB_PTP
 	if (icr & E1000_ICR_TS) {
 		u32 tsicr = rd32(E1000_TSICR);
 
@@ -5556,7 +5803,6 @@ static irqreturn_t igb_intr_msi(int irq, void *data)
 			schedule_work(&adapter->ptp_tx_work);
 		}
 	}
-#endif /* CONFIG_IGB_PTP */
 
 	napi_schedule(&q_vector->napi);
 
@@ -5599,7 +5845,6 @@ static irqreturn_t igb_intr(int irq, void *data)
 			mod_timer(&adapter->watchdog_timer, jiffies + 1);
 	}
 
-#ifdef CONFIG_IGB_PTP
 	if (icr & E1000_ICR_TS) {
 		u32 tsicr = rd32(E1000_TSICR);
 
@@ -5610,7 +5855,6 @@ static irqreturn_t igb_intr(int irq, void *data)
 			schedule_work(&adapter->ptp_tx_work);
 		}
 	}
-#endif /* CONFIG_IGB_PTP */
 
 	napi_schedule(&q_vector->napi);
 
@@ -5702,7 +5946,7 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
 			break;
 
 		/* prevent any other reads prior to eop_desc */
-		rmb();
+		read_barrier_depends();
 
 		/* if DD is not set pending work has not been completed */
 		if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
@@ -5818,9 +6062,10 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
 		}
 	}
 
+#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
 	if (unlikely(total_packets &&
 		     netif_carrier_ok(tx_ring->netdev) &&
-		     igb_desc_unused(tx_ring) >= IGB_TX_QUEUE_WAKE)) {
+		     igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) {
 		/* Make sure that anybody stopping the queue after this
 		 * sees the new next_to_clean.
 		 */
@@ -5840,6 +6085,257 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
 	return !!budget;
 }
 
+/**
+ * igb_reuse_rx_page - page flip buffer and store it back on the ring
+ * @rx_ring: rx descriptor ring to store buffers on
+ * @old_buff: donor buffer to have page reused
+ *
+ * Synchronizes page for reuse by the adapter
+ **/
+static void igb_reuse_rx_page(struct igb_ring *rx_ring,
+			      struct igb_rx_buffer *old_buff)
+{
+	struct igb_rx_buffer *new_buff;
+	u16 nta = rx_ring->next_to_alloc;
+
+	new_buff = &rx_ring->rx_buffer_info[nta];
+
+	/* update, and store next to alloc */
+	nta++;
+	rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
+
+	/* transfer page from old buffer to new buffer */
+	memcpy(new_buff, old_buff, sizeof(struct igb_rx_buffer));
+
+	/* sync the buffer for use by the device */
+	dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma,
+					 old_buff->page_offset,
+					 IGB_RX_BUFSZ,
+					 DMA_FROM_DEVICE);
+}
+
+static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer,
+				  struct page *page,
+				  unsigned int truesize)
+{
+	/* avoid re-using remote pages */
+	if (unlikely(page_to_nid(page) != numa_node_id()))
+		return false;
+
+#if (PAGE_SIZE < 8192)
+	/* if we are only owner of page we can reuse it */
+	if (unlikely(page_count(page) != 1))
+		return false;
+
+	/* flip page offset to other buffer */
+	rx_buffer->page_offset ^= IGB_RX_BUFSZ;
+
+	/* since we are the only owner of the page and we need to
+	 * increment it, just set the value to 2 in order to avoid
+	 * an unnecessary locked operation
+	 */
+	atomic_set(&page->_count, 2);
+#else
+	/* move offset up to the next cache line */
+	rx_buffer->page_offset += truesize;
+
+	if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ))
+		return false;
+
+	/* bump ref count on page before it is given to the stack */
+	get_page(page);
+#endif
+
+	return true;
+}
+
+/**
+ * igb_add_rx_frag - Add contents of Rx buffer to sk_buff
+ * @rx_ring: rx descriptor ring to transact packets on
+ * @rx_buffer: buffer containing page to add
+ * @rx_desc: descriptor containing length of buffer written by hardware
+ * @skb: sk_buff to place the data into
+ *
+ * This function will add the data contained in rx_buffer->page to the skb.
+ * This is done either through a direct copy if the data in the buffer is
+ * less than the skb header size, otherwise it will just attach the page as
+ * a frag to the skb.
+ *
+ * The function will then update the page offset if necessary and return
+ * true if the buffer can be reused by the adapter.
+ **/
+static bool igb_add_rx_frag(struct igb_ring *rx_ring,
+			    struct igb_rx_buffer *rx_buffer,
+			    union e1000_adv_rx_desc *rx_desc,
+			    struct sk_buff *skb)
+{
+	struct page *page = rx_buffer->page;
+	unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
+#if (PAGE_SIZE < 8192)
+	unsigned int truesize = IGB_RX_BUFSZ;
+#else
+	unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
+#endif
+
+	if ((size <= IGB_RX_HDR_LEN) && !skb_is_nonlinear(skb)) {
+		unsigned char *va = page_address(page) + rx_buffer->page_offset;
+
+		if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
+			igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
+			va += IGB_TS_HDR_LEN;
+			size -= IGB_TS_HDR_LEN;
+		}
+
+		memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
+
+		/* we can reuse buffer as-is, just make sure it is local */
+		if (likely(page_to_nid(page) == numa_node_id()))
+			return true;
+
+		/* this page cannot be reused so discard it */
+		put_page(page);
+		return false;
+	}
+
+	skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
+			rx_buffer->page_offset, size, truesize);
+
+	return igb_can_reuse_rx_page(rx_buffer, page, truesize);
+}
+
+static struct sk_buff *igb_build_rx_buffer(struct igb_ring *rx_ring,
+					   union e1000_adv_rx_desc *rx_desc)
+{
+	struct igb_rx_buffer *rx_buffer;
+	struct sk_buff *skb;
+	struct page *page;
+	void *page_addr;
+	unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
+#if (PAGE_SIZE < 8192)
+	unsigned int truesize = IGB_RX_BUFSZ;
+#else
+	unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) +
+				SKB_DATA_ALIGN(NET_SKB_PAD +
+					       NET_IP_ALIGN +
+					       size);
+#endif
+
+	/* If we spanned a buffer we have a huge mess so test for it */
+	BUG_ON(unlikely(!igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)));
+
+	rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
+	page = rx_buffer->page;
+	prefetchw(page);
+
+	page_addr = page_address(page) + rx_buffer->page_offset;
+
+	/* prefetch first cache line of first page */
+	prefetch(page_addr + NET_SKB_PAD + NET_IP_ALIGN);
+#if L1_CACHE_BYTES < 128
+	prefetch(page_addr + L1_CACHE_BYTES + NET_SKB_PAD + NET_IP_ALIGN);
+#endif
+
+	/* build an skb to around the page buffer */
+	skb = build_skb(page_addr, truesize);
+	if (unlikely(!skb)) {
+		rx_ring->rx_stats.alloc_failed++;
+		return NULL;
+	}
+
+	/* we are reusing so sync this buffer for CPU use */
+	dma_sync_single_range_for_cpu(rx_ring->dev,
+				      rx_buffer->dma,
+				      rx_buffer->page_offset,
+				      IGB_RX_BUFSZ,
+				      DMA_FROM_DEVICE);
+
+	/* update pointers within the skb to store the data */
+	skb_reserve(skb, NET_IP_ALIGN + NET_SKB_PAD);
+	__skb_put(skb, size);
+
+	/* pull timestamp out of packet data */
+	if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
+		igb_ptp_rx_pktstamp(rx_ring->q_vector, skb->data, skb);
+		__skb_pull(skb, IGB_TS_HDR_LEN);
+	}
+
+	if (igb_can_reuse_rx_page(rx_buffer, page, truesize)) {
+		/* hand second half of page back to the ring */
+		igb_reuse_rx_page(rx_ring, rx_buffer);
+	} else {
+		/* we are not reusing the buffer so unmap it */
+		dma_unmap_page(rx_ring->dev, rx_buffer->dma,
+			       PAGE_SIZE, DMA_FROM_DEVICE);
+	}
+
+	/* clear contents of buffer_info */
+	rx_buffer->dma = 0;
+	rx_buffer->page = NULL;
+
+	return skb;
+}
+
+static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring,
+					   union e1000_adv_rx_desc *rx_desc,
+					   struct sk_buff *skb)
+{
+	struct igb_rx_buffer *rx_buffer;
+	struct page *page;
+
+	rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
+
+	page = rx_buffer->page;
+	prefetchw(page);
+
+	if (likely(!skb)) {
+		void *page_addr = page_address(page) +
+				  rx_buffer->page_offset;
+
+		/* prefetch first cache line of first page */
+		prefetch(page_addr);
+#if L1_CACHE_BYTES < 128
+		prefetch(page_addr + L1_CACHE_BYTES);
+#endif
+
+		/* allocate a skb to store the frags */
+		skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
+						IGB_RX_HDR_LEN);
+		if (unlikely(!skb)) {
+			rx_ring->rx_stats.alloc_failed++;
+			return NULL;
+		}
+
+		/*
+		 * we will be copying header into skb->data in
+		 * pskb_may_pull so it is in our interest to prefetch
+		 * it now to avoid a possible cache miss
+		 */
+		prefetchw(skb->data);
+	}
+
+	/* we are reusing so sync this buffer for CPU use */
+	dma_sync_single_range_for_cpu(rx_ring->dev,
+				      rx_buffer->dma,
+				      rx_buffer->page_offset,
+				      IGB_RX_BUFSZ,
+				      DMA_FROM_DEVICE);
+
+	/* pull page into skb */
+	if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
+		/* hand second half of page back to the ring */
+		igb_reuse_rx_page(rx_ring, rx_buffer);
+	} else {
+		/* we are not reusing the buffer so unmap it */
+		dma_unmap_page(rx_ring->dev, rx_buffer->dma,
+			       PAGE_SIZE, DMA_FROM_DEVICE);
+	}
+
+	/* clear contents of rx_buffer */
+	rx_buffer->page = NULL;
+
+	return skb;
+}
+
 static inline void igb_rx_checksum(struct igb_ring *ring,
 				   union e1000_adv_rx_desc *rx_desc,
 				   struct sk_buff *skb)
@@ -5889,147 +6385,350 @@ static inline void igb_rx_hash(struct igb_ring *ring,
 		skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
 }
 
-static void igb_rx_vlan(struct igb_ring *ring,
-			union e1000_adv_rx_desc *rx_desc,
-			struct sk_buff *skb)
+/**
+ * igb_is_non_eop - process handling of non-EOP buffers
+ * @rx_ring: Rx ring being processed
+ * @rx_desc: Rx descriptor for current buffer
+ * @skb: current socket buffer containing buffer in progress
+ *
+ * This function updates next to clean.  If the buffer is an EOP buffer
+ * this function exits returning false, otherwise it will place the
+ * sk_buff in the next buffer to be chained and return true indicating
+ * that this is in fact a non-EOP buffer.
+ **/
+static bool igb_is_non_eop(struct igb_ring *rx_ring,
+			   union e1000_adv_rx_desc *rx_desc)
+{
+	u32 ntc = rx_ring->next_to_clean + 1;
+
+	/* fetch, update, and store next to clean */
+	ntc = (ntc < rx_ring->count) ? ntc : 0;
+	rx_ring->next_to_clean = ntc;
+
+	prefetch(IGB_RX_DESC(rx_ring, ntc));
+
+	if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)))
+		return false;
+
+	return true;
+}
+
+/**
+ * igb_get_headlen - determine size of header for LRO/GRO
+ * @data: pointer to the start of the headers
+ * @max_len: total length of section to find headers in
+ *
+ * This function is meant to determine the length of headers that will
+ * be recognized by hardware for LRO, and GRO offloads.  The main
+ * motivation of doing this is to only perform one pull for IPv4 TCP
+ * packets so that we can do basic things like calculating the gso_size
+ * based on the average data per packet.
+ **/
+static unsigned int igb_get_headlen(unsigned char *data,
+				    unsigned int max_len)
+{
+	union {
+		unsigned char *network;
+		/* l2 headers */
+		struct ethhdr *eth;
+		struct vlan_hdr *vlan;
+		/* l3 headers */
+		struct iphdr *ipv4;
+		struct ipv6hdr *ipv6;
+	} hdr;
+	__be16 protocol;
+	u8 nexthdr = 0;	/* default to not TCP */
+	u8 hlen;
+
+	/* this should never happen, but better safe than sorry */
+	if (max_len < ETH_HLEN)
+		return max_len;
+
+	/* initialize network frame pointer */
+	hdr.network = data;
+
+	/* set first protocol and move network header forward */
+	protocol = hdr.eth->h_proto;
+	hdr.network += ETH_HLEN;
+
+	/* handle any vlan tag if present */
+	if (protocol == __constant_htons(ETH_P_8021Q)) {
+		if ((hdr.network - data) > (max_len - VLAN_HLEN))
+			return max_len;
+
+		protocol = hdr.vlan->h_vlan_encapsulated_proto;
+		hdr.network += VLAN_HLEN;
+	}
+
+	/* handle L3 protocols */
+	if (protocol == __constant_htons(ETH_P_IP)) {
+		if ((hdr.network - data) > (max_len - sizeof(struct iphdr)))
+			return max_len;
+
+		/* access ihl as a u8 to avoid unaligned access on ia64 */
+		hlen = (hdr.network[0] & 0x0F) << 2;
+
+		/* verify hlen meets minimum size requirements */
+		if (hlen < sizeof(struct iphdr))
+			return hdr.network - data;
+
+		/* record next protocol if header is present */
+		if (!hdr.ipv4->frag_off)
+			nexthdr = hdr.ipv4->protocol;
+	} else if (protocol == __constant_htons(ETH_P_IPV6)) {
+		if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr)))
+			return max_len;
+
+		/* record next protocol */
+		nexthdr = hdr.ipv6->nexthdr;
+		hlen = sizeof(struct ipv6hdr);
+	} else {
+		return hdr.network - data;
+	}
+
+	/* relocate pointer to start of L4 header */
+	hdr.network += hlen;
+
+	/* finally sort out TCP */
+	if (nexthdr == IPPROTO_TCP) {
+		if ((hdr.network - data) > (max_len - sizeof(struct tcphdr)))
+			return max_len;
+
+		/* access doff as a u8 to avoid unaligned access on ia64 */
+		hlen = (hdr.network[12] & 0xF0) >> 2;
+
+		/* verify hlen meets minimum size requirements */
+		if (hlen < sizeof(struct tcphdr))
+			return hdr.network - data;
+
+		hdr.network += hlen;
+	} else if (nexthdr == IPPROTO_UDP) {
+		if ((hdr.network - data) > (max_len - sizeof(struct udphdr)))
+			return max_len;
+
+		hdr.network += sizeof(struct udphdr);
+	}
+
+	/*
+	 * If everything has gone correctly hdr.network should be the
+	 * data section of the packet and will be the end of the header.
+	 * If not then it probably represents the end of the last recognized
+	 * header.
+	 */
+	if ((hdr.network - data) < max_len)
+		return hdr.network - data;
+	else
+		return max_len;
+}
+
+/**
+ * igb_pull_tail - igb specific version of skb_pull_tail
+ * @rx_ring: rx descriptor ring packet is being transacted on
+ * @rx_desc: pointer to the EOP Rx descriptor
+ * @skb: pointer to current skb being adjusted
+ *
+ * This function is an igb specific version of __pskb_pull_tail.  The
+ * main difference between this version and the original function is that
+ * this function can make several assumptions about the state of things
+ * that allow for significant optimizations versus the standard function.
+ * As a result we can do things like drop a frag and maintain an accurate
+ * truesize for the skb.
+ */
+static void igb_pull_tail(struct igb_ring *rx_ring,
+			  union e1000_adv_rx_desc *rx_desc,
+			  struct sk_buff *skb)
+{
+	struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
+	unsigned char *va;
+	unsigned int pull_len;
+
+	/*
+	 * it is valid to use page_address instead of kmap since we are
+	 * working with pages allocated out of the lomem pool per
+	 * alloc_page(GFP_ATOMIC)
+	 */
+	va = skb_frag_address(frag);
+
+	if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
+		/* retrieve timestamp from buffer */
+		igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
+
+		/* update pointers to remove timestamp header */
+		skb_frag_size_sub(frag, IGB_TS_HDR_LEN);
+		frag->page_offset += IGB_TS_HDR_LEN;
+		skb->data_len -= IGB_TS_HDR_LEN;
+		skb->len -= IGB_TS_HDR_LEN;
+
+		/* move va to start of packet data */
+		va += IGB_TS_HDR_LEN;
+	}
+
+	/*
+	 * we need the header to contain the greater of either ETH_HLEN or
+	 * 60 bytes if the skb->len is less than 60 for skb_pad.
+	 */
+	pull_len = igb_get_headlen(va, IGB_RX_HDR_LEN);
+
+	/* align pull length to size of long to optimize memcpy performance */
+	skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
+
+	/* update all of the pointers */
+	skb_frag_size_sub(frag, pull_len);
+	frag->page_offset += pull_len;
+	skb->data_len -= pull_len;
+	skb->tail += pull_len;
+}
+
+/**
+ * igb_cleanup_headers - Correct corrupted or empty headers
+ * @rx_ring: rx descriptor ring packet is being transacted on
+ * @rx_desc: pointer to the EOP Rx descriptor
+ * @skb: pointer to current skb being fixed
+ *
+ * Address the case where we are pulling data in on pages only
+ * and as such no data is present in the skb header.
+ *
+ * In addition if skb is not at least 60 bytes we need to pad it so that
+ * it is large enough to qualify as a valid Ethernet frame.
+ *
+ * Returns true if an error was encountered and skb was freed.
+ **/
+static bool igb_cleanup_headers(struct igb_ring *rx_ring,
+				union e1000_adv_rx_desc *rx_desc,
+				struct sk_buff *skb)
 {
-	if (igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) {
+
+	if (unlikely((igb_test_staterr(rx_desc,
+				       E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) {
+		struct net_device *netdev = rx_ring->netdev;
+		if (!(netdev->features & NETIF_F_RXALL)) {
+			dev_kfree_skb_any(skb);
+			return true;
+		}
+	}
+
+	/* place header in linear portion of buffer */
+	if (skb_is_nonlinear(skb))
+		igb_pull_tail(rx_ring, rx_desc, skb);
+
+	/* if skb_pad returns an error the skb was freed */
+	if (unlikely(skb->len < 60)) {
+		int pad_len = 60 - skb->len;
+
+		if (skb_pad(skb, pad_len))
+			return true;
+		__skb_put(skb, pad_len);
+	}
+
+	return false;
+}
+
+/**
+ * igb_process_skb_fields - Populate skb header fields from Rx descriptor
+ * @rx_ring: rx descriptor ring packet is being transacted on
+ * @rx_desc: pointer to the EOP Rx descriptor
+ * @skb: pointer to current skb being populated
+ *
+ * This function checks the ring, descriptor, and packet information in
+ * order to populate the hash, checksum, VLAN, timestamp, protocol, and
+ * other fields within the skb.
+ **/
+static void igb_process_skb_fields(struct igb_ring *rx_ring,
+				   union e1000_adv_rx_desc *rx_desc,
+				   struct sk_buff *skb)
+{
+	struct net_device *dev = rx_ring->netdev;
+
+	igb_rx_hash(rx_ring, rx_desc, skb);
+
+	igb_rx_checksum(rx_ring, rx_desc, skb);
+
+	igb_ptp_rx_hwtstamp(rx_ring->q_vector, rx_desc, skb);
+
+	if ((dev->features & NETIF_F_HW_VLAN_RX) &&
+	    igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) {
 		u16 vid;
 		if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) &&
-		    test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags))
+		    test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags))
 			vid = be16_to_cpu(rx_desc->wb.upper.vlan);
 		else
 			vid = le16_to_cpu(rx_desc->wb.upper.vlan);
 
 		__vlan_hwaccel_put_tag(skb, vid);
 	}
-}
 
-static inline u16 igb_get_hlen(union e1000_adv_rx_desc *rx_desc)
-{
-	/* 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.
-	 */
-	u16 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) &
-	           E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
-	if (hlen > IGB_RX_HDR_LEN)
-		hlen = IGB_RX_HDR_LEN;
-	return hlen;
+	skb_record_rx_queue(skb, rx_ring->queue_index);
+
+	skb->protocol = eth_type_trans(skb, rx_ring->netdev);
 }
 
-static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, int budget)
+static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget)
 {
 	struct igb_ring *rx_ring = q_vector->rx.ring;
-	union e1000_adv_rx_desc *rx_desc;
-	const int current_node = numa_node_id();
+	struct sk_buff *skb = rx_ring->skb;
 	unsigned int total_bytes = 0, total_packets = 0;
 	u16 cleaned_count = igb_desc_unused(rx_ring);
-	u16 i = rx_ring->next_to_clean;
 
-	rx_desc = IGB_RX_DESC(rx_ring, i);
-
-	while (igb_test_staterr(rx_desc, E1000_RXD_STAT_DD)) {
-		struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i];
-		struct sk_buff *skb = buffer_info->skb;
-		union e1000_adv_rx_desc *next_rxd;
+	do {
+		union e1000_adv_rx_desc *rx_desc;
 
-		buffer_info->skb = NULL;
-		prefetch(skb->data);
+		/* return some buffers to hardware, one at a time is too slow */
+		if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
+			igb_alloc_rx_buffers(rx_ring, cleaned_count);
+			cleaned_count = 0;
+		}
 
-		i++;
-		if (i == rx_ring->count)
-			i = 0;
+		rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean);
 
-		next_rxd = IGB_RX_DESC(rx_ring, i);
-		prefetch(next_rxd);
+		if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD))
+			break;
 
-		/*
-		 * This memory barrier is needed to keep us from reading
+		/* This memory barrier is needed to keep us from reading
 		 * any other fields out of the rx_desc until we know the
 		 * RXD_STAT_DD bit is set
 		 */
 		rmb();
 
-		if (!skb_is_nonlinear(skb)) {
-			__skb_put(skb, igb_get_hlen(rx_desc));
-			dma_unmap_single(rx_ring->dev, buffer_info->dma,
-					 IGB_RX_HDR_LEN,
-					 DMA_FROM_DEVICE);
-			buffer_info->dma = 0;
-		}
-
-		if (rx_desc->wb.upper.length) {
-			u16 length = le16_to_cpu(rx_desc->wb.upper.length);
-
-			skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
-						buffer_info->page,
-						buffer_info->page_offset,
-						length);
-
-			skb->len += length;
-			skb->data_len += length;
-			skb->truesize += PAGE_SIZE / 2;
+		/* retrieve a buffer from the ring */
+		if (ring_uses_build_skb(rx_ring))
+			skb = igb_build_rx_buffer(rx_ring, rx_desc);
+		else
+			skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb);
 
-			if ((page_count(buffer_info->page) != 1) ||
-			    (page_to_nid(buffer_info->page) != current_node))
-				buffer_info->page = NULL;
-			else
-				get_page(buffer_info->page);
+		/* exit if we failed to retrieve a buffer */
+		if (!skb)
+			break;
 
-			dma_unmap_page(rx_ring->dev, buffer_info->page_dma,
-				       PAGE_SIZE / 2, DMA_FROM_DEVICE);
-			buffer_info->page_dma = 0;
-		}
+		cleaned_count++;
 
-		if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)) {
-			struct igb_rx_buffer *next_buffer;
-			next_buffer = &rx_ring->rx_buffer_info[i];
-			buffer_info->skb = next_buffer->skb;
-			buffer_info->dma = next_buffer->dma;
-			next_buffer->skb = skb;
-			next_buffer->dma = 0;
-			goto next_desc;
-		}
+		/* fetch next buffer in frame if non-eop */
+		if (igb_is_non_eop(rx_ring, rx_desc))
+			continue;
 
-		if (unlikely((igb_test_staterr(rx_desc,
-					       E1000_RXDEXT_ERR_FRAME_ERR_MASK))
-			     && !(rx_ring->netdev->features & NETIF_F_RXALL))) {
-			dev_kfree_skb_any(skb);
-			goto next_desc;
+		/* verify the packet layout is correct */
+		if (igb_cleanup_headers(rx_ring, rx_desc, skb)) {
+			skb = NULL;
+			continue;
 		}
 
-#ifdef CONFIG_IGB_PTP
-		igb_ptp_rx_hwtstamp(q_vector, rx_desc, skb);
-#endif /* CONFIG_IGB_PTP */
-		igb_rx_hash(rx_ring, rx_desc, skb);
-		igb_rx_checksum(rx_ring, rx_desc, skb);
-		igb_rx_vlan(rx_ring, rx_desc, skb);
-
+		/* probably a little skewed due to removing CRC */
 		total_bytes += skb->len;
-		total_packets++;
 
-		skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+		/* populate checksum, timestamp, VLAN, and protocol */
+		igb_process_skb_fields(rx_ring, rx_desc, skb);
 
 		napi_gro_receive(&q_vector->napi, skb);
 
-		budget--;
-next_desc:
-		if (!budget)
-			break;
+		/* reset skb pointer */
+		skb = NULL;
 
-		cleaned_count++;
-		/* return some buffers to hardware, one at a time is too slow */
-		if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
-			igb_alloc_rx_buffers(rx_ring, cleaned_count);
-			cleaned_count = 0;
-		}
+		/* update budget accounting */
+		total_packets++;
+	} while (likely(total_packets < budget));
 
-		/* use prefetched values */
-		rx_desc = next_rxd;
-	}
+	/* place incomplete frames back on ring for completion */
+	rx_ring->skb = skb;
 
-	rx_ring->next_to_clean = i;
 	u64_stats_update_begin(&rx_ring->rx_syncp);
 	rx_ring->rx_stats.packets += total_packets;
 	rx_ring->rx_stats.bytes += total_bytes;
@@ -6040,74 +6739,53 @@ next_desc:
 	if (cleaned_count)
 		igb_alloc_rx_buffers(rx_ring, cleaned_count);
 
-	return !!budget;
+	return (total_packets < budget);
 }
 
-static bool igb_alloc_mapped_skb(struct igb_ring *rx_ring,
-				 struct igb_rx_buffer *bi)
+static bool igb_alloc_mapped_page(struct igb_ring *rx_ring,
+				  struct igb_rx_buffer *bi)
 {
-	struct sk_buff *skb = bi->skb;
-	dma_addr_t dma = bi->dma;
+	struct page *page = bi->page;
+	dma_addr_t dma;
 
-	if (dma)
+	/* since we are recycling buffers we should seldom need to alloc */
+	if (likely(page))
 		return true;
 
-	if (likely(!skb)) {
-		skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
-						IGB_RX_HDR_LEN);
-		bi->skb = skb;
-		if (!skb) {
-			rx_ring->rx_stats.alloc_failed++;
-			return false;
-		}
-
-		/* initialize skb for ring */
-		skb_record_rx_queue(skb, rx_ring->queue_index);
+	/* alloc new page for storage */
+	page = __skb_alloc_page(GFP_ATOMIC | __GFP_COLD, NULL);
+	if (unlikely(!page)) {
+		rx_ring->rx_stats.alloc_failed++;
+		return false;
 	}
 
-	dma = dma_map_single(rx_ring->dev, skb->data,
-			     IGB_RX_HDR_LEN, DMA_FROM_DEVICE);
+	/* map page for use */
+	dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
 
+	/*
+	 * if mapping failed free memory back to system since
+	 * there isn't much point in holding memory we can't use
+	 */
 	if (dma_mapping_error(rx_ring->dev, dma)) {
+		__free_page(page);
+
 		rx_ring->rx_stats.alloc_failed++;
 		return false;
 	}
 
 	bi->dma = dma;
+	bi->page = page;
+	bi->page_offset = 0;
+
 	return true;
 }
 
-static bool igb_alloc_mapped_page(struct igb_ring *rx_ring,
-				  struct igb_rx_buffer *bi)
+static inline unsigned int igb_rx_offset(struct igb_ring *rx_ring)
 {
-	struct page *page = bi->page;
-	dma_addr_t page_dma = bi->page_dma;
-	unsigned int page_offset = bi->page_offset ^ (PAGE_SIZE / 2);
-
-	if (page_dma)
-		return true;
-
-	if (!page) {
-		page = __skb_alloc_page(GFP_ATOMIC, bi->skb);
-		bi->page = page;
-		if (unlikely(!page)) {
-			rx_ring->rx_stats.alloc_failed++;
-			return false;
-		}
-	}
-
-	page_dma = dma_map_page(rx_ring->dev, page,
-				page_offset, PAGE_SIZE / 2,
-				DMA_FROM_DEVICE);
-
-	if (dma_mapping_error(rx_ring->dev, page_dma)) {
-		rx_ring->rx_stats.alloc_failed++;
-		return false;
-	}
-
-	bi->page_dma = page_dma;
-	bi->page_offset = page_offset;
-	return true;
+	if (ring_uses_build_skb(rx_ring))
+		return NET_SKB_PAD + NET_IP_ALIGN;
+	else
+		return 0;
 }
 
 /**
@@ -6120,22 +6798,25 @@ void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count)
 	struct igb_rx_buffer *bi;
 	u16 i = rx_ring->next_to_use;
 
+	/* nothing to do */
+	if (!cleaned_count)
+		return;
+
 	rx_desc = IGB_RX_DESC(rx_ring, i);
 	bi = &rx_ring->rx_buffer_info[i];
 	i -= rx_ring->count;
 
-	while (cleaned_count--) {
-		if (!igb_alloc_mapped_skb(rx_ring, bi))
-			break;
-
-		/* Refresh the desc even if buffer_addrs didn't change
-		 * because each write-back erases this info. */
-		rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
-
+	do {
 		if (!igb_alloc_mapped_page(rx_ring, bi))
 			break;
 
-		rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
+		/*
+		 * Refresh the desc even if buffer_addrs didn't change
+		 * because each write-back erases this info.
+		 */
+		rx_desc->read.pkt_addr = cpu_to_le64(bi->dma +
+						     bi->page_offset +
+						     igb_rx_offset(rx_ring));
 
 		rx_desc++;
 		bi++;
@@ -6148,17 +6829,25 @@ void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count)
 
 		/* clear the hdr_addr for the next_to_use descriptor */
 		rx_desc->read.hdr_addr = 0;
-	}
+
+		cleaned_count--;
+	} while (cleaned_count);
 
 	i += rx_ring->count;
 
 	if (rx_ring->next_to_use != i) {
+		/* record the next descriptor to use */
 		rx_ring->next_to_use = i;
 
-		/* Force memory writes to complete before letting h/w
+		/* update next to alloc since we have filled the ring */
+		rx_ring->next_to_alloc = 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). */
+		 * such as IA-64).
+		 */
 		wmb();
 		writel(i, rx_ring->tail);
 	}
@@ -6207,10 +6896,8 @@ static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
 	case SIOCGMIIREG:
 	case SIOCSMIIREG:
 		return igb_mii_ioctl(netdev, ifr, cmd);
-#ifdef CONFIG_IGB_PTP
 	case SIOCSHWTSTAMP:
 		return igb_ptp_hwtstamp_ioctl(netdev, ifr, cmd);
-#endif /* CONFIG_IGB_PTP */
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -6478,7 +7165,7 @@ static int igb_resume(struct device *dev)
 	pci_enable_wake(pdev, PCI_D3hot, 0);
 	pci_enable_wake(pdev, PCI_D3cold, 0);
 
-	if (igb_init_interrupt_scheme(adapter)) {
+	if (igb_init_interrupt_scheme(adapter, true)) {
 		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
 		return -ENOMEM;
 	}
@@ -6492,7 +7179,9 @@ static int igb_resume(struct device *dev)
 	wr32(E1000_WUS, ~0);
 
 	if (netdev->flags & IFF_UP) {
+		rtnl_lock();
 		err = __igb_open(netdev, true);
+		rtnl_unlock();
 		if (err)
 			return err;
 	}
@@ -6553,6 +7242,72 @@ static void igb_shutdown(struct pci_dev *pdev)
 	}
 }
 
+#ifdef CONFIG_PCI_IOV
+static int igb_sriov_reinit(struct pci_dev *dev)
+{
+	struct net_device *netdev = pci_get_drvdata(dev);
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = adapter->pdev;
+
+	rtnl_lock();
+
+	if (netif_running(netdev))
+		igb_close(netdev);
+
+	igb_clear_interrupt_scheme(adapter);
+
+	igb_init_queue_configuration(adapter);
+
+	if (igb_init_interrupt_scheme(adapter, true)) {
+		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
+		return -ENOMEM;
+	}
+
+	if (netif_running(netdev))
+		igb_open(netdev);
+
+	rtnl_unlock();
+
+	return 0;
+}
+
+static int igb_pci_disable_sriov(struct pci_dev *dev)
+{
+	int err = igb_disable_sriov(dev);
+
+	if (!err)
+		err = igb_sriov_reinit(dev);
+
+	return err;
+}
+
+static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs)
+{
+	int err = igb_enable_sriov(dev, num_vfs);
+
+	if (err)
+		goto out;
+
+	err = igb_sriov_reinit(dev);
+	if (!err)
+		return num_vfs;
+
+out:
+	return err;
+}
+
+#endif
+static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
+{
+#ifdef CONFIG_PCI_IOV
+	if (num_vfs == 0)
+		return igb_pci_disable_sriov(dev);
+	else
+		return igb_pci_enable_sriov(dev, num_vfs);
+#endif
+	return 0;
+}
+
 #ifdef CONFIG_NET_POLL_CONTROLLER
 /*
  * Polling 'interrupt' - used by things like netconsole to send skbs
@@ -6958,4 +7713,72 @@ static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
 	}
 }
 
+/*  igb_read_i2c_byte - Reads 8 bit word over I2C
+ *  @hw: pointer to hardware structure
+ *  @byte_offset: byte offset to read
+ *  @dev_addr: device address
+ *  @data: value read
+ *
+ *  Performs byte read operation over I2C interface at
+ *  a specified device address.
+ */
+s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
+				u8 dev_addr, u8 *data)
+{
+	struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
+	struct i2c_client *this_client = adapter->i2c_client;
+	s32 status;
+	u16 swfw_mask = 0;
+
+	if (!this_client)
+		return E1000_ERR_I2C;
+
+	swfw_mask = E1000_SWFW_PHY0_SM;
+
+	if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)
+	    != E1000_SUCCESS)
+		return E1000_ERR_SWFW_SYNC;
+
+	status = i2c_smbus_read_byte_data(this_client, byte_offset);
+	hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+
+	if (status < 0)
+		return E1000_ERR_I2C;
+	else {
+		*data = status;
+		return E1000_SUCCESS;
+	}
+}
+
+/*  igb_write_i2c_byte - Writes 8 bit word over I2C
+ *  @hw: pointer to hardware structure
+ *  @byte_offset: byte offset to write
+ *  @dev_addr: device address
+ *  @data: value to write
+ *
+ *  Performs byte write operation over I2C interface at
+ *  a specified device address.
+ */
+s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
+				 u8 dev_addr, u8 data)
+{
+	struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
+	struct i2c_client *this_client = adapter->i2c_client;
+	s32 status;
+	u16 swfw_mask = E1000_SWFW_PHY0_SM;
+
+	if (!this_client)
+		return E1000_ERR_I2C;
+
+	if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS)
+		return E1000_ERR_SWFW_SYNC;
+	status = i2c_smbus_write_byte_data(this_client, byte_offset, data);
+	hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+
+	if (status)
+		return E1000_ERR_I2C;
+	else
+		return E1000_SUCCESS;
+
+}
 /* igb_main.c */