Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
igb: remove sysfs entry that was used to set the number of vfs
igbvf: add new driver to support 82576 virtual functions
drivers/net/eql.c: Fix a dev leakage.
niu: Fix unused variable warning.
r6040: set MODULE_VERSION
bnx2: Don't use reserved names
FEC driver: add missing #endif
niu: Fix error handling
mv643xx_eth: don't reset the rx coal timer on interface up
smsc911x: correct debugging message on mii read timeout
ethoc: fix library build errors
netfilter: ctnetlink: fix regression in expectation handling
netfilter: fix selection of "LED" target in netfilter
netfilter: ip6tables regression fix

drivers/net/Kconfig

···
 	depends on NET_ETHERNET && HAS_IOMEM
 	select MII
 	select PHYLIB
+	select CRC32
+	select BITREVERSE
 	help
 	  Say Y here if you want to use the OpenCores 10/100 Mbps Ethernet MAC.
 
···
 	  Say Y here if you want to use Direct Cache Access (DCA) in the
 	  driver.  DCA is a method for warming the CPU cache before data
 	  is used, with the intent of lessening the impact of cache misses.
+
+config IGBVF
+       tristate "Intel(R) 82576 Virtual Function Ethernet support"
+       depends on PCI
+       ---help---
+         This driver supports Intel(R) 82576 virtual functions.  For more
+         information on how to identify your adapter, go to the Adapter &
+         Driver ID Guide at:
+
+         <http://support.intel.com/support/network/adapter/pro100/21397.htm>
+
+         For general information and support, go to the Intel support
+         website at:
+
+         <http://support.intel.com>
+
+         More specific information on configuring the driver is in
+         <file:Documentation/networking/e1000.txt>.
+
+         To compile this driver as a module, choose M here. The module
+         will be called igbvf.
 
 source "drivers/net/ixp2000/Kconfig"
 

drivers/net/Makefile

···
 obj-$(CONFIG_E1000E) += e1000e/
 obj-$(CONFIG_IBM_NEW_EMAC) += ibm_newemac/
 obj-$(CONFIG_IGB) += igb/
+obj-$(CONFIG_IGBVF) += igbvf/
 obj-$(CONFIG_IXGBE) += ixgbe/
 obj-$(CONFIG_IXGB) += ixgb/
 obj-$(CONFIG_IP1000) += ipg.o

drivers/net/bnx2.c

···
 bnx2_request_firmware(struct bnx2 *bp)
 {
 	const char *mips_fw_file, *rv2p_fw_file;
-	const struct bnx2_mips_fw_file *mips;
-	const struct bnx2_rv2p_fw_file *rv2p;
+	const struct bnx2_mips_fw_file *mips_fw;
+	const struct bnx2_rv2p_fw_file *rv2p_fw;
 	int rc;
 
 	if (CHIP_NUM(bp) == CHIP_NUM_5709) {
···
 		       rv2p_fw_file);
 		return rc;
 	}
-	mips = (const struct bnx2_mips_fw_file *) bp->mips_firmware->data;
-	rv2p = (const struct bnx2_rv2p_fw_file *) bp->rv2p_firmware->data;
-	if (bp->mips_firmware->size < sizeof(*mips) ||
-	    check_mips_fw_entry(bp->mips_firmware, &mips->com) ||
-	    check_mips_fw_entry(bp->mips_firmware, &mips->cp) ||
-	    check_mips_fw_entry(bp->mips_firmware, &mips->rxp) ||
-	    check_mips_fw_entry(bp->mips_firmware, &mips->tpat) ||
-	    check_mips_fw_entry(bp->mips_firmware, &mips->txp)) {
+	mips_fw = (const struct bnx2_mips_fw_file *) bp->mips_firmware->data;
+	rv2p_fw = (const struct bnx2_rv2p_fw_file *) bp->rv2p_firmware->data;
+	if (bp->mips_firmware->size < sizeof(*mips_fw) ||
+	    check_mips_fw_entry(bp->mips_firmware, &mips_fw->com) ||
+	    check_mips_fw_entry(bp->mips_firmware, &mips_fw->cp) ||
+	    check_mips_fw_entry(bp->mips_firmware, &mips_fw->rxp) ||
+	    check_mips_fw_entry(bp->mips_firmware, &mips_fw->tpat) ||
+	    check_mips_fw_entry(bp->mips_firmware, &mips_fw->txp)) {
 		printk(KERN_ERR PFX "Firmware file \"%s\" is invalid\n",
 		       mips_fw_file);
 		return -EINVAL;
 	}
-	if (bp->rv2p_firmware->size < sizeof(*rv2p) ||
-	    check_fw_section(bp->rv2p_firmware, &rv2p->proc1.rv2p, 8, true) ||
-	    check_fw_section(bp->rv2p_firmware, &rv2p->proc2.rv2p, 8, true)) {
+	if (bp->rv2p_firmware->size < sizeof(*rv2p_fw) ||
+	    check_fw_section(bp->rv2p_firmware, &rv2p_fw->proc1.rv2p, 8, true) ||
+	    check_fw_section(bp->rv2p_firmware, &rv2p_fw->proc2.rv2p, 8, true)) {
 		printk(KERN_ERR PFX "Firmware file \"%s\" is invalid\n",
 		       rv2p_fw_file);
 		return -EINVAL;

drivers/net/eql.c

···
 	}
 	spin_unlock_bh(&eql->queue.lock);
 
+	dev_put(slave_dev);
+
 	return ret;
 }
 

drivers/net/fec.c

···
 	icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
 	*icrp = 0x0d000000;
 }
+#endif
 
 #ifdef CONFIG_M5272
 static void __inline__ fec_get_mac(struct net_device *dev)

drivers/net/igb/igb_main.c

···
 /* for netdump / net console */
 static void igb_netpoll(struct net_device *);
 #endif
-
 #ifdef CONFIG_PCI_IOV
-static ssize_t igb_set_num_vfs(struct device *, struct device_attribute *,
-                               const char *, size_t);
-static ssize_t igb_show_num_vfs(struct device *, struct device_attribute *,
-                               char *);
-DEVICE_ATTR(num_vfs, S_IRUGO | S_IWUSR, igb_show_num_vfs, igb_set_num_vfs);
-#endif
+static unsigned int max_vfs = 0;
+module_param(max_vfs, uint, 0);
+MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate "
+                 "per physical function");
+#endif /* CONFIG_PCI_IOV */
+
 static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
 		     pci_channel_state_t);
 static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
···
 
 	/* If we can't do MSI-X, try MSI */
 msi_only:
+#ifdef CONFIG_PCI_IOV
+	/* disable SR-IOV for non MSI-X configurations */
+	if (adapter->vf_data) {
+		struct e1000_hw *hw = &adapter->hw;
+		/* disable iov and allow time for transactions to clear */
+		pci_disable_sriov(adapter->pdev);
+		msleep(500);
+
+		kfree(adapter->vf_data);
+		adapter->vf_data = NULL;
+		wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
+		msleep(100);
+		dev_info(&adapter->pdev->dev, "IOV Disabled\n");
+	}
+#endif
 	adapter->num_rx_queues = 1;
 	adapter->num_tx_queues = 1;
 	if (!pci_enable_msi(adapter->pdev))
···
 	if (err)
 		goto err_sw_init;
 
+#ifdef CONFIG_PCI_IOV
+	/* since iov functionality isn't critical to base device function we
+	 * can accept failure.  If it fails we don't allow iov to be enabled */
+	if (hw->mac.type == e1000_82576) {
+		/* 82576 supports a maximum of 7 VFs in addition to the PF */
+		unsigned int num_vfs = (max_vfs > 7) ? 7 : max_vfs;
+		int i;
+		unsigned char mac_addr[ETH_ALEN];
+
+		if (num_vfs)
+			adapter->vf_data = kcalloc(num_vfs,
+						sizeof(struct vf_data_storage),
+						GFP_KERNEL);
+		if (!adapter->vf_data) {
+			dev_err(&pdev->dev, "Could not allocate VF private "
+				"data - IOV enable failed\n");
+		} else {
+			err = pci_enable_sriov(pdev, num_vfs);
+			if (!err) {
+				adapter->vfs_allocated_count = num_vfs;
+				dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs);
+				for (i = 0; i < adapter->vfs_allocated_count; i++) {
+					random_ether_addr(mac_addr);
+					igb_set_vf_mac(adapter, i, mac_addr);
+				}
+			} else {
+				kfree(adapter->vf_data);
+				adapter->vf_data = NULL;
+			}
+		}
+	}
+
+#endif
 	/* setup the private structure */
 	err = igb_sw_init(adapter);
 	if (err)
···
 	if (err)
 		goto err_register;
 
-#ifdef CONFIG_PCI_IOV
-	/* since iov functionality isn't critical to base device function we
-	 * can accept failure.  If it fails we don't allow iov to be enabled */
-	if (hw->mac.type == e1000_82576) {
-		err = pci_enable_sriov(pdev, 0);
-		if (!err)
-			err = device_create_file(&netdev->dev,
-			                         &dev_attr_num_vfs);
-		if (err)
-			dev_err(&pdev->dev, "Failed to initialize IOV\n");
-	}
-
-#endif
 #ifdef CONFIG_IGB_DCA
 	if (dca_add_requester(&pdev->dev) == 0) {
 		adapter->flags |= IGB_FLAG_DCA_ENABLED;
···
 	igb_vmdq_set_replication_pf(hw, true);
 }
 
-#ifdef CONFIG_PCI_IOV
-static ssize_t igb_show_num_vfs(struct device *dev,
-                                struct device_attribute *attr, char *buf)
-{
-	struct igb_adapter *adapter = netdev_priv(to_net_dev(dev));
-
-	return sprintf(buf, "%d\n", adapter->vfs_allocated_count);
-}
-
-static ssize_t igb_set_num_vfs(struct device *dev,
-                               struct device_attribute *attr,
-                               const char *buf, size_t count)
-{
-	struct net_device *netdev = to_net_dev(dev);
-	struct igb_adapter *adapter = netdev_priv(netdev);
-	struct e1000_hw *hw = &adapter->hw;
-	struct pci_dev *pdev = adapter->pdev;
-	unsigned int num_vfs, i;
-	unsigned char mac_addr[ETH_ALEN];
-	int err;
-
-	sscanf(buf, "%u", &num_vfs);
-
-	if (num_vfs > 7)
-		num_vfs = 7;
-
-	/* value unchanged do nothing */
-	if (num_vfs == adapter->vfs_allocated_count)
-		return count;
-
-	if (netdev->flags & IFF_UP)
-		igb_close(netdev);
-
-	igb_reset_interrupt_capability(adapter);
-	igb_free_queues(adapter);
-	adapter->tx_ring = NULL;
-	adapter->rx_ring = NULL;
-	adapter->vfs_allocated_count = 0;
-
-	/* reclaim resources allocated to VFs since we are changing count */
-	if (adapter->vf_data) {
-		/* disable iov and allow time for transactions to clear */
-		pci_disable_sriov(pdev);
-		msleep(500);
-
-		kfree(adapter->vf_data);
-		adapter->vf_data = NULL;
-		wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
-		msleep(100);
-		dev_info(&pdev->dev, "IOV Disabled\n");
-	}
-
-	if (num_vfs) {
-		adapter->vf_data = kcalloc(num_vfs,
-		                           sizeof(struct vf_data_storage),
-		                           GFP_KERNEL);
-		if (!adapter->vf_data) {
-			dev_err(&pdev->dev, "Could not allocate VF private "
-				"data - IOV enable failed\n");
-		} else {
-			err = pci_enable_sriov(pdev, num_vfs);
-			if (!err) {
-				adapter->vfs_allocated_count = num_vfs;
-				dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs);
-				for (i = 0; i < adapter->vfs_allocated_count; i++) {
-					random_ether_addr(mac_addr);
-					igb_set_vf_mac(adapter, i, mac_addr);
-				}
-			} else {
-				kfree(adapter->vf_data);
-				adapter->vf_data = NULL;
-			}
-		}
-	}
-
-	igb_set_interrupt_capability(adapter);
-	igb_alloc_queues(adapter);
-	igb_reset(adapter);
-
-	if (netdev->flags & IFF_UP)
-		igb_open(netdev);
-
-	return count;
-}
-#endif /* CONFIG_PCI_IOV */
 /* igb_main.c */

drivers/net/igbvf/Makefile

···
+################################################################################
+#
+# Intel(R) 82576 Virtual Function Linux driver
+# Copyright(c) 2009 Intel Corporation.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# The full GNU General Public License is included in this distribution in
+# the file called "COPYING".
+#
+# Contact Information:
+# e1000-devel Mailing List <[e-mail]>
+# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+#
+################################################################################
+
+#
+# Makefile for the Intel(R) 82576 VF ethernet driver
+#
+
+obj-$(CONFIG_IGBVF) += igbvf.o
+
+igbvf-objs := vf.o \
+              mbx.o \
+              ethtool.o \
+              netdev.o
+

drivers/net/igbvf/defines.h

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 1999 - 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_DEFINES_H_
+#define _E1000_DEFINES_H_
+
+/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
+#define REQ_TX_DESCRIPTOR_MULTIPLE  8
+#define REQ_RX_DESCRIPTOR_MULTIPLE  8
+
+/* IVAR valid bit */
+#define E1000_IVAR_VALID        0x80
+
+/* Receive Descriptor bit definitions */
+#define E1000_RXD_STAT_DD       0x01    /* Descriptor Done */
+#define E1000_RXD_STAT_EOP      0x02    /* End of Packet */
+#define E1000_RXD_STAT_IXSM     0x04    /* Ignore checksum */
+#define E1000_RXD_STAT_VP       0x08    /* IEEE VLAN Packet */
+#define E1000_RXD_STAT_UDPCS    0x10    /* UDP xsum calculated */
+#define E1000_RXD_STAT_TCPCS    0x20    /* TCP xsum calculated */
+#define E1000_RXD_STAT_IPCS     0x40    /* IP xsum calculated */
+#define E1000_RXD_ERR_SE        0x02    /* Symbol Error */
+#define E1000_RXD_SPC_VLAN_MASK 0x0FFF  /* VLAN ID is in lower 12 bits */
+
+#define E1000_RXDEXT_STATERR_CE    0x01000000
+#define E1000_RXDEXT_STATERR_SE    0x02000000
+#define E1000_RXDEXT_STATERR_SEQ   0x04000000
+#define E1000_RXDEXT_STATERR_CXE   0x10000000
+#define E1000_RXDEXT_STATERR_TCPE  0x20000000
+#define E1000_RXDEXT_STATERR_IPE   0x40000000
+#define E1000_RXDEXT_STATERR_RXE   0x80000000
+
+
+/* Same mask, but for extended and packet split descriptors */
+#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
+    E1000_RXDEXT_STATERR_CE  |            \
+    E1000_RXDEXT_STATERR_SE  |            \
+    E1000_RXDEXT_STATERR_SEQ |            \
+    E1000_RXDEXT_STATERR_CXE |            \
+    E1000_RXDEXT_STATERR_RXE)
+
+/* Device Control */
+#define E1000_CTRL_RST      0x04000000  /* Global reset */
+
+/* Device Status */
+#define E1000_STATUS_FD         0x00000001      /* Full duplex.0=half,1=full */
+#define E1000_STATUS_LU         0x00000002      /* Link up.0=no,1=link */
+#define E1000_STATUS_TXOFF      0x00000010      /* transmission paused */
+#define E1000_STATUS_SPEED_10   0x00000000      /* Speed 10Mb/s */
+#define E1000_STATUS_SPEED_100  0x00000040      /* Speed 100Mb/s */
+#define E1000_STATUS_SPEED_1000 0x00000080      /* Speed 1000Mb/s */
+
+#define SPEED_10    10
+#define SPEED_100   100
+#define SPEED_1000  1000
+#define HALF_DUPLEX 1
+#define FULL_DUPLEX 2
+
+/* Transmit Descriptor bit definitions */
+#define E1000_TXD_POPTS_IXSM 0x01       /* Insert IP checksum */
+#define E1000_TXD_POPTS_TXSM 0x02       /* Insert TCP/UDP checksum */
+#define E1000_TXD_CMD_DEXT   0x20000000 /* Descriptor extension (0 = legacy) */
+#define E1000_TXD_STAT_DD    0x00000001 /* Descriptor Done */
+
+#define MAX_JUMBO_FRAME_SIZE    0x3F00
+
+/* 802.1q VLAN Packet Size */
+#define VLAN_TAG_SIZE              4    /* 802.3ac tag (not DMA'd) */
+
+/* Error Codes */
+#define E1000_SUCCESS      0
+#define E1000_ERR_CONFIG   3
+#define E1000_ERR_MAC_INIT 5
+#define E1000_ERR_MBX      15
+
+#ifndef ETH_ADDR_LEN
+#define ETH_ADDR_LEN                 6
+#endif
+
+/* SRRCTL bit definitions */
+#define E1000_SRRCTL_BSIZEPKT_SHIFT                     10 /* Shift _right_ */
+#define E1000_SRRCTL_BSIZEHDRSIZE_MASK                  0x00000F00
+#define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT                 2  /* Shift _left_ */
+#define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF                0x02000000
+#define E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS          0x0A000000
+#define E1000_SRRCTL_DESCTYPE_MASK                      0x0E000000
+#define E1000_SRRCTL_DROP_EN                            0x80000000
+
+#define E1000_SRRCTL_BSIZEPKT_MASK      0x0000007F
+#define E1000_SRRCTL_BSIZEHDR_MASK      0x00003F00
+
+/* Additional Descriptor Control definitions */
+#define E1000_TXDCTL_QUEUE_ENABLE  0x02000000 /* Enable specific Tx Queue */
+#define E1000_RXDCTL_QUEUE_ENABLE  0x02000000 /* Enable specific Rx Queue */
+
+/* Direct Cache Access (DCA) definitions */
+#define E1000_DCA_TXCTRL_TX_WB_RO_EN (1 << 11) /* Tx Desc writeback RO bit */
+
+#define E1000_VF_INIT_TIMEOUT 200 /* Number of retries to clear RSTI */
+
+#endif /* _E1000_DEFINES_H_ */

drivers/net/igbvf/ethtool.c

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* ethtool support for igbvf */
+
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+
+#include "igbvf.h"
+#include <linux/if_vlan.h>
+
+
+struct igbvf_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int sizeof_stat;
+	int stat_offset;
+	int base_stat_offset;
+};
+
+#define IGBVF_STAT(current, base) \
+		sizeof(((struct igbvf_adapter *)0)->current), \
+		offsetof(struct igbvf_adapter, current), \
+		offsetof(struct igbvf_adapter, base)
+
+static const struct igbvf_stats igbvf_gstrings_stats[] = {
+	{ "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
+	{ "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
+	{ "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+	{ "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
+	{ "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
+	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
+	{ "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
+	{ "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
+	{ "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+	{ "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
+	{ "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
+	{ "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
+	{ "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
+};
+
+#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
+
+static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Link test   (on/offline)"
+};
+
+#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
+
+static int igbvf_get_settings(struct net_device *netdev,
+                              struct ethtool_cmd *ecmd)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 status;
+
+	ecmd->supported   = SUPPORTED_1000baseT_Full;
+
+	ecmd->advertising = ADVERTISED_1000baseT_Full;
+
+	ecmd->port = -1;
+	ecmd->transceiver = XCVR_DUMMY1;
+
+	status = er32(STATUS);
+	if (status & E1000_STATUS_LU) {
+		if (status & E1000_STATUS_SPEED_1000)
+			ecmd->speed = 1000;
+		else if (status & E1000_STATUS_SPEED_100)
+			ecmd->speed = 100;
+		else
+			ecmd->speed = 10;
+
+		if (status & E1000_STATUS_FD)
+			ecmd->duplex = DUPLEX_FULL;
+		else
+			ecmd->duplex = DUPLEX_HALF;
+	} else {
+		ecmd->speed = -1;
+		ecmd->duplex = -1;
+	}
+
+	ecmd->autoneg = AUTONEG_DISABLE;
+
+	return 0;
+}
+
+static u32 igbvf_get_link(struct net_device *netdev)
+{
+	return netif_carrier_ok(netdev);
+}
+
+static int igbvf_set_settings(struct net_device *netdev,
+                              struct ethtool_cmd *ecmd)
+{
+	return -EOPNOTSUPP;
+}
+
+static void igbvf_get_pauseparam(struct net_device *netdev,
+                                 struct ethtool_pauseparam *pause)
+{
+	return;
+}
+
+static int igbvf_set_pauseparam(struct net_device *netdev,
+                                struct ethtool_pauseparam *pause)
+{
+	return -EOPNOTSUPP;
+}
+
+static u32 igbvf_get_tx_csum(struct net_device *netdev)
+{
+	return ((netdev->features & NETIF_F_IP_CSUM) != 0);
+}
+
+static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
+{
+	if (data)
+		netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+	else
+		netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+	return 0;
+}
+
+static int igbvf_set_tso(struct net_device *netdev, u32 data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	int i;
+	struct net_device *v_netdev;
+
+	if (data) {
+		netdev->features |= NETIF_F_TSO;
+		netdev->features |= NETIF_F_TSO6;
+	} else {
+		netdev->features &= ~NETIF_F_TSO;
+		netdev->features &= ~NETIF_F_TSO6;
+		/* disable TSO on all VLANs if they're present */
+		if (!adapter->vlgrp)
+			goto tso_out;
+		for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+			v_netdev = vlan_group_get_device(adapter->vlgrp, i);
+			if (!v_netdev)
+				continue;
+
+			v_netdev->features &= ~NETIF_F_TSO;
+			v_netdev->features &= ~NETIF_F_TSO6;
+			vlan_group_set_device(adapter->vlgrp, i, v_netdev);
+		}
+	}
+
+tso_out:
+	dev_info(&adapter->pdev->dev, "TSO is %s\n",
+	         data ? "Enabled" : "Disabled");
+	adapter->flags |= FLAG_TSO_FORCE;
+	return 0;
+}
+
+static u32 igbvf_get_msglevel(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	return adapter->msg_enable;
+}
+
+static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	adapter->msg_enable = data;
+}
+
+static int igbvf_get_regs_len(struct net_device *netdev)
+{
+#define IGBVF_REGS_LEN 8
+	return IGBVF_REGS_LEN * sizeof(u32);
+}
+
+static void igbvf_get_regs(struct net_device *netdev,
+                           struct ethtool_regs *regs, void *p)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 *regs_buff = p;
+	u8 revision_id;
+
+	memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
+
+	pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
+
+	regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
+
+	regs_buff[0] = er32(CTRL);
+	regs_buff[1] = er32(STATUS);
+
+	regs_buff[2] = er32(RDLEN(0));
+	regs_buff[3] = er32(RDH(0));
+	regs_buff[4] = er32(RDT(0));
+
+	regs_buff[5] = er32(TDLEN(0));
+	regs_buff[6] = er32(TDH(0));
+	regs_buff[7] = er32(TDT(0));
+}
+
+static int igbvf_get_eeprom_len(struct net_device *netdev)
+{
+	return 0;
+}
+
+static int igbvf_get_eeprom(struct net_device *netdev,
+                            struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	return -EOPNOTSUPP;
+}
+
+static int igbvf_set_eeprom(struct net_device *netdev,
+                            struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	return -EOPNOTSUPP;
+}
+
+static void igbvf_get_drvinfo(struct net_device *netdev,
+                              struct ethtool_drvinfo *drvinfo)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	char firmware_version[32] = "N/A";
+
+	strncpy(drvinfo->driver,  igbvf_driver_name, 32);
+	strncpy(drvinfo->version, igbvf_driver_version, 32);
+	strncpy(drvinfo->fw_version, firmware_version, 32);
+	strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
+	drvinfo->regdump_len = igbvf_get_regs_len(netdev);
+	drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
+}
+
+static void igbvf_get_ringparam(struct net_device *netdev,
+                                struct ethtool_ringparam *ring)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	struct igbvf_ring *rx_ring = adapter->rx_ring;
+
+	ring->rx_max_pending = IGBVF_MAX_RXD;
+	ring->tx_max_pending = IGBVF_MAX_TXD;
+	ring->rx_mini_max_pending = 0;
+	ring->rx_jumbo_max_pending = 0;
+	ring->rx_pending = rx_ring->count;
+	ring->tx_pending = tx_ring->count;
+	ring->rx_mini_pending = 0;
+	ring->rx_jumbo_pending = 0;
+}
+
+static int igbvf_set_ringparam(struct net_device *netdev,
+                               struct ethtool_ringparam *ring)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct igbvf_ring *temp_ring;
+	int err;
+	u32 new_rx_count, new_tx_count;
+
+	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+		return -EINVAL;
+
+	new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
+	new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
+	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
+
+	new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
+	new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
+	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
+
+	if ((new_tx_count == adapter->tx_ring->count) &&
+	    (new_rx_count == adapter->rx_ring->count)) {
+		/* nothing to do */
+		return 0;
+	}
+
+	temp_ring = vmalloc(sizeof(struct igbvf_ring));
+	if (!temp_ring)
+		return -ENOMEM;
+
+	while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+		msleep(1);
+
+	if (netif_running(adapter->netdev))
+		igbvf_down(adapter);
+
+	/*
+	 * We can't just free everything and then setup again,
+	 * because the ISRs in MSI-X mode get passed pointers
+	 * to the tx and rx ring structs.
+	 */
+	if (new_tx_count != adapter->tx_ring->count) {
+		memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
+
+		temp_ring->count = new_tx_count;
+		err = igbvf_setup_tx_resources(adapter, temp_ring);
+		if (err)
+			goto err_setup;
+
+		igbvf_free_tx_resources(adapter->tx_ring);
+
+		memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
+	}
+
+	if (new_rx_count != adapter->rx_ring->count) {
+		memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
+
+		temp_ring->count = new_rx_count;
+		err = igbvf_setup_rx_resources(adapter, temp_ring);
+		if (err)
+			goto err_setup;
+
+		igbvf_free_rx_resources(adapter->rx_ring);
+
+		memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
+	}
+
+	err = 0;
+err_setup:
+	if (netif_running(adapter->netdev))
+		igbvf_up(adapter);
+
+	clear_bit(__IGBVF_RESETTING, &adapter->state);
+	vfree(temp_ring);
+	return err;
+}
+
+static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	*data = 0;
+
+	hw->mac.ops.check_for_link(hw);
+
+	if (!(er32(STATUS) & E1000_STATUS_LU))
+		*data = 1;
+
+	return *data;
+}
+
+static int igbvf_get_self_test_count(struct net_device *netdev)
+{
+	return IGBVF_TEST_LEN;
+}
+
+static int igbvf_get_stats_count(struct net_device *netdev)
+{
+	return IGBVF_GLOBAL_STATS_LEN;
+}
+
+static void igbvf_diag_test(struct net_device *netdev,
+                            struct ethtool_test *eth_test, u64 *data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	set_bit(__IGBVF_TESTING, &adapter->state);
+
+	/*
+	 * Link test performed before hardware reset so autoneg doesn't
+	 * interfere with test result
+	 */
+	if (igbvf_link_test(adapter, &data[0]))
+		eth_test->flags |= ETH_TEST_FL_FAILED;
+
+	clear_bit(__IGBVF_TESTING, &adapter->state);
+	msleep_interruptible(4 * 1000);
+}
+
+static void igbvf_get_wol(struct net_device *netdev,
+                          struct ethtool_wolinfo *wol)
+{
+	wol->supported = 0;
+	wol->wolopts = 0;
+
+	return;
+}
+
+static int igbvf_set_wol(struct net_device *netdev,
+                         struct ethtool_wolinfo *wol)
+{
+	return -EOPNOTSUPP;
+}
+
+static int igbvf_phys_id(struct net_device *netdev, u32 data)
+{
+	return 0;
+}
+
+static int igbvf_get_coalesce(struct net_device *netdev,
+                              struct ethtool_coalesce *ec)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (adapter->itr_setting <= 3)
+		ec->rx_coalesce_usecs = adapter->itr_setting;
+	else
+		ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
+
+	return 0;
+}
+
+static int igbvf_set_coalesce(struct net_device *netdev,
+                              struct ethtool_coalesce *ec)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
+	    ((ec->rx_coalesce_usecs > 3) &&
+	     (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
+	    (ec->rx_coalesce_usecs == 2))
+		return -EINVAL;
+
+	/* convert to rate of irq's per second */
+	if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
+		adapter->itr = IGBVF_START_ITR;
+		adapter->itr_setting = ec->rx_coalesce_usecs;
+	} else {
+		adapter->itr = ec->rx_coalesce_usecs << 2;
+		adapter->itr_setting = adapter->itr;
+	}
+
+	writel(adapter->itr,
+	       hw->hw_addr + adapter->rx_ring[0].itr_register);
+
+	return 0;
+}
+
+static int igbvf_nway_reset(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	if (netif_running(netdev))
+		igbvf_reinit_locked(adapter);
+	return 0;
+}
+
+
+static void igbvf_get_ethtool_stats(struct net_device *netdev,
+                                    struct ethtool_stats *stats,
+                                    u64 *data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	int i;
+
+	igbvf_update_stats(adapter);
+	for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+		char *p = (char *)adapter +
+		          igbvf_gstrings_stats[i].stat_offset;
+		char *b = (char *)adapter +
+		          igbvf_gstrings_stats[i].base_stat_offset;
+		data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
+		            sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
+		            (*(u32 *)p - *(u32 *)b));
+	}
+
+}
+
+static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
+                              u8 *data)
+{
+	u8 *p = data;
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_TEST:
+		memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
+		break;
+	case ETH_SS_STATS:
+		for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+			memcpy(p, igbvf_gstrings_stats[i].stat_string,
+			       ETH_GSTRING_LEN);
+			p += ETH_GSTRING_LEN;
+		}
+		break;
+	}
+}
+
+static const struct ethtool_ops igbvf_ethtool_ops = {
+	.get_settings		= igbvf_get_settings,
+	.set_settings		= igbvf_set_settings,
+	.get_drvinfo		= igbvf_get_drvinfo,
+	.get_regs_len		= igbvf_get_regs_len,
+	.get_regs		= igbvf_get_regs,
+	.get_wol		= igbvf_get_wol,
+	.set_wol		= igbvf_set_wol,
+	.get_msglevel		= igbvf_get_msglevel,
+	.set_msglevel		= igbvf_set_msglevel,
+	.nway_reset		= igbvf_nway_reset,
+	.get_link		= igbvf_get_link,
+	.get_eeprom_len		= igbvf_get_eeprom_len,
+	.get_eeprom		= igbvf_get_eeprom,
+	.set_eeprom		= igbvf_set_eeprom,
+	.get_ringparam		= igbvf_get_ringparam,
+	.set_ringparam		= igbvf_set_ringparam,
+	.get_pauseparam		= igbvf_get_pauseparam,
+	.set_pauseparam		= igbvf_set_pauseparam,
+	.get_tx_csum		= igbvf_get_tx_csum,
+	.set_tx_csum		= igbvf_set_tx_csum,
+	.get_sg			= ethtool_op_get_sg,
+	.set_sg			= ethtool_op_set_sg,
+	.get_tso		= ethtool_op_get_tso,
+	.set_tso		= igbvf_set_tso,
+	.self_test		= igbvf_diag_test,
+	.get_strings		= igbvf_get_strings,
+	.phys_id		= igbvf_phys_id,
+	.get_ethtool_stats	= igbvf_get_ethtool_stats,
+	.self_test_count	= igbvf_get_self_test_count,
+	.get_stats_count	= igbvf_get_stats_count,
+	.get_coalesce		= igbvf_get_coalesce,
+	.set_coalesce		= igbvf_set_coalesce,
+};
+
+void igbvf_set_ethtool_ops(struct net_device *netdev)
+{
+	/* have to "undeclare" const on this struct to remove warnings */
+	SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
+}

drivers/net/igbvf/igbvf.h

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* Linux PRO/1000 Ethernet Driver main header file */
+
+#ifndef _IGBVF_H_
+#define _IGBVF_H_
+
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/io.h>
+#include <linux/netdevice.h>
+
+
+#include "vf.h"
+
+/* Forward declarations */
+struct igbvf_info;
+struct igbvf_adapter;
+
+/* Interrupt defines */
+#define IGBVF_START_ITR                 648 /* ~6000 ints/sec */
+
+/* Interrupt modes, as used by the IntMode paramter */
+#define IGBVF_INT_MODE_LEGACY           0
+#define IGBVF_INT_MODE_MSI              1
+#define IGBVF_INT_MODE_MSIX             2
+
+/* Tx/Rx descriptor defines */
+#define IGBVF_DEFAULT_TXD               256
+#define IGBVF_MAX_TXD                   4096
+#define IGBVF_MIN_TXD                   80
+
+#define IGBVF_DEFAULT_RXD               256
+#define IGBVF_MAX_RXD                   4096
+#define IGBVF_MIN_RXD                   80
+
+#define IGBVF_MIN_ITR_USECS             10 /* 100000 irq/sec */
+#define IGBVF_MAX_ITR_USECS             10000 /* 100    irq/sec */
+
+/* RX descriptor control thresholds.
+ * PTHRESH - MAC will consider prefetch if it has fewer than this number of
+ *           descriptors available in its onboard memory.
+ *           Setting this to 0 disables RX descriptor prefetch.
+ * HTHRESH - MAC will only prefetch if there are at least this many descriptors
+ *           available in host memory.
+ *           If PTHRESH is 0, this should also be 0.
+ * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
+ *           descriptors until either it has this many to write back, or the
+ *           ITR timer expires.
+ */
+#define IGBVF_RX_PTHRESH                16
+#define IGBVF_RX_HTHRESH                8
+#define IGBVF_RX_WTHRESH                1
+
+/* this is the size past which hardware will drop packets when setting LPE=0 */
+#define MAXIMUM_ETHERNET_VLAN_SIZE      1522
+
+#define IGBVF_FC_PAUSE_TIME             0x0680 /* 858 usec */
+
+/* How many Tx Descriptors do we need to call netif_wake_queue ? */
+#define IGBVF_TX_QUEUE_WAKE             32
+/* How many Rx Buffers do we bundle into one write to the hardware ? */
+#define IGBVF_RX_BUFFER_WRITE           16 /* Must be power of 2 */
+
+#define AUTO_ALL_MODES                  0
+#define IGBVF_EEPROM_APME               0x0400
+
+#define IGBVF_MNG_VLAN_NONE             (-1)
+
+/* Number of packet split data buffers (not including the header buffer) */
+#define PS_PAGE_BUFFERS                 (MAX_PS_BUFFERS - 1)
+
+enum igbvf_boards {
+	board_vf,
+};
+
+struct igbvf_queue_stats {
+	u64 packets;
+	u64 bytes;
+};
+
+/*
+ * wrappers around a pointer to a socket buffer,
+ * so a DMA handle can be stored along with the buffer
+ */
+struct igbvf_buffer {
+	dma_addr_t dma;
+	struct sk_buff *skb;
+	union {
+		/* Tx */
+		struct {
+			unsigned long time_stamp;
+			u16 length;
+			u16 next_to_watch;
+		};
+		/* Rx */
+		struct {
+			struct page *page;
+			u64 page_dma;
+			unsigned int page_offset;
+		};
+	};
+	struct page *page;
+};
+
+union igbvf_desc {
+	union e1000_adv_rx_desc rx_desc;
+	union e1000_adv_tx_desc tx_desc;
+	struct e1000_adv_tx_context_desc tx_context_desc;
+};
+
+struct igbvf_ring {
+	struct igbvf_adapter *adapter;  /* backlink */
+	union igbvf_desc *desc;         /* pointer to ring memory  */
+	dma_addr_t dma;                 /* phys address of ring    */
+	unsigned int size;              /* length of ring in bytes */
+	unsigned int count;             /* number of desc. in ring */
+
+	u16 next_to_use;
+	u16 next_to_clean;
+
+	u16 head;
+	u16 tail;
+
+	/* array of buffer information structs */
+	struct igbvf_buffer *buffer_info;
+	struct napi_struct napi;
+
+	char name[IFNAMSIZ + 5];
+	u32 eims_value;
+	u32 itr_val;
+	u16 itr_register;
+	int set_itr;
+
+	struct sk_buff *rx_skb_top;
+
+	struct igbvf_queue_stats stats;
+};
+
+/* board specific private data structure */
+struct igbvf_adapter {
+	struct timer_list watchdog_timer;
+	struct timer_list blink_timer;
+
+	struct work_struct reset_task;
+	struct work_struct watchdog_task;
+
+	const struct igbvf_info *ei;
+
+	struct vlan_group *vlgrp;
+	u32 bd_number;
+	u32 rx_buffer_len;
+	u32 polling_interval;
+	u16 mng_vlan_id;
+	u16 link_speed;
+	u16 link_duplex;
+
+	spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
+
+	/* track device up/down/testing state */
+	unsigned long state;
+
+	/* Interrupt Throttle Rate */
+	u32 itr;
+	u32 itr_setting;
+	u16 tx_itr;
+	u16 rx_itr;
+
+	/*
+	 * Tx
+	 */
+	struct igbvf_ring *tx_ring /* One per active queue */
+	____cacheline_aligned_in_smp;
+
+	unsigned long tx_queue_len;
+	unsigned int restart_queue;
+	u32 txd_cmd;
+
+	bool detect_tx_hung;
+	u8 tx_timeout_factor;
+
+	u32 tx_int_delay;
+	u32 tx_abs_int_delay;
+
+	unsigned int total_tx_bytes;
+	unsigned int total_tx_packets;
+	unsigned int total_rx_bytes;
+	unsigned int total_rx_packets;
+
+	/* Tx stats */
+	u32 tx_timeout_count;
+	u32 tx_fifo_head;
+	u32 tx_head_addr;
+	u32 tx_fifo_size;
+	u32 tx_dma_failed;
+
+	/*
+	 * Rx
+	 */
+	struct igbvf_ring *rx_ring;
+
+	u32 rx_int_delay;
+	u32 rx_abs_int_delay;
+
+	/* Rx stats */
+	u64 hw_csum_err;
+	u64 hw_csum_good;
+	u64 rx_hdr_split;
+	u32 alloc_rx_buff_failed;
+	u32 rx_dma_failed;
+
+	unsigned int rx_ps_hdr_size;
+	u32 max_frame_size;
+	u32 min_frame_size;
+
+	/* OS defined structs */
+	struct net_device *netdev;
+	struct pci_dev *pdev;
+	struct net_device_stats net_stats;
+	spinlock_t stats_lock;      /* prevent concurrent stats updates */
+
+	/* structs defined in e1000_hw.h */
+	struct e1000_hw hw;
+
+	/* The VF counters don't clear on read so we have to get a base
+	 * count on driver start up and always subtract that base on
+	 * on the first update, thus the flag..
+	 */
+	struct e1000_vf_stats stats;
+	u64 zero_base;
+
+	struct igbvf_ring test_tx_ring;
+	struct igbvf_ring test_rx_ring;
+	u32 test_icr;
+
+	u32 msg_enable;
+	struct msix_entry *msix_entries;
+	int int_mode;
+	u32 eims_enable_mask;
+	u32 eims_other;
+	u32 int_counter0;
+	u32 int_counter1;
+
+	u32 eeprom_wol;
+	u32 wol;
+	u32 pba;
+
+	bool fc_autoneg;
+
+	unsigned long led_status;
+
+	unsigned int flags;
+};
+
+struct igbvf_info {
+	enum e1000_mac_type     mac;
+	unsigned int            flags;
+	u32                     pba;
+	void                    (*init_ops)(struct e1000_hw *);
+	s32                     (*get_variants)(struct igbvf_adapter *);
+};
+
+/* hardware capability, feature, and workaround flags */
+#define FLAG_HAS_HW_VLAN_FILTER           (1 << 0)
+#define FLAG_HAS_JUMBO_FRAMES             (1 << 1)
+#define FLAG_MSI_ENABLED                  (1 << 2)
+#define FLAG_RX_CSUM_ENABLED              (1 << 3)
+#define FLAG_TSO_FORCE                    (1 << 4)
+
+#define IGBVF_RX_DESC_ADV(R, i)     \
+	(&((((R).desc))[i].rx_desc))
+#define IGBVF_TX_DESC_ADV(R, i)     \
+	(&((((R).desc))[i].tx_desc))
+#define IGBVF_TX_CTXTDESC_ADV(R, i) \
+	(&((((R).desc))[i].tx_context_desc))
+
+enum igbvf_state_t {
+	__IGBVF_TESTING,
+	__IGBVF_RESETTING,
+	__IGBVF_DOWN
+};
+
+enum latency_range {
+	lowest_latency = 0,
+	low_latency = 1,
+	bulk_latency = 2,
+	latency_invalid = 255
+};
+
+extern char igbvf_driver_name[];
+extern const char igbvf_driver_version[];
+
+extern void igbvf_check_options(struct igbvf_adapter *);
+extern void igbvf_set_ethtool_ops(struct net_device *);
+
+extern int igbvf_up(struct igbvf_adapter *);
+extern void igbvf_down(struct igbvf_adapter *);
+extern void igbvf_reinit_locked(struct igbvf_adapter *);
+extern void igbvf_reset(struct igbvf_adapter *);
+extern int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *);
+extern int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *);
+extern void igbvf_free_rx_resources(struct igbvf_ring *);
+extern void igbvf_free_tx_resources(struct igbvf_ring *);
+extern void igbvf_update_stats(struct igbvf_adapter *);
+extern void igbvf_set_interrupt_capability(struct igbvf_adapter *);
+extern void igbvf_reset_interrupt_capability(struct igbvf_adapter *);
+
+extern unsigned int copybreak;
+
+#endif /* _IGBVF_H_ */

drivers/net/igbvf/mbx.c

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "mbx.h"
+
+/**
+ *  e1000_poll_for_msg - Wait for message notification
+ *  @hw: pointer to the HW structure
+ *
+ *  returns SUCCESS if it successfully received a message notification
+ **/
+static s32 e1000_poll_for_msg(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	int countdown = mbx->timeout;
+
+	if (!mbx->ops.check_for_msg)
+		goto out;
+
+	while (countdown && mbx->ops.check_for_msg(hw)) {
+		countdown--;
+		udelay(mbx->usec_delay);
+	}
+
+	/* if we failed, all future posted messages fail until reset */
+	if (!countdown)
+		mbx->timeout = 0;
+out:
+	return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
+}
+
+/**
+ *  e1000_poll_for_ack - Wait for message acknowledgement
+ *  @hw: pointer to the HW structure
+ *
+ *  returns SUCCESS if it successfully received a message acknowledgement
+ **/
+static s32 e1000_poll_for_ack(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	int countdown = mbx->timeout;
+
+	if (!mbx->ops.check_for_ack)
+		goto out;
+
+	while (countdown && mbx->ops.check_for_ack(hw)) {
+		countdown--;
+		udelay(mbx->usec_delay);
+	}
+
+	/* if we failed, all future posted messages fail until reset */
+	if (!countdown)
+		mbx->timeout = 0;
+out:
+	return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
+}
+
+/**
+ *  e1000_read_posted_mbx - Wait for message notification and receive message
+ *  @hw: pointer to the HW structure
+ *  @msg: The message buffer
+ *  @size: Length of buffer
+ *
+ *  returns SUCCESS if it successfully received a message notification and
+ *  copied it into the receive buffer.
+ **/
+static s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	s32 ret_val = -E1000_ERR_MBX;
+
+	if (!mbx->ops.read)
+		goto out;
+
+	ret_val = e1000_poll_for_msg(hw);
+
+	/* if ack received read message, otherwise we timed out */
+	if (!ret_val)
+		ret_val = mbx->ops.read(hw, msg, size);
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_write_posted_mbx - Write a message to the mailbox, wait for ack
+ *  @hw: pointer to the HW structure
+ *  @msg: The message buffer
+ *  @size: Length of buffer
+ *
+ *  returns SUCCESS if it successfully copied message into the buffer and
+ *  received an ack to that message within delay * timeout period
+ **/
+static s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	s32 ret_val = -E1000_ERR_MBX;
+
+	/* exit if we either can't write or there isn't a defined timeout */
+	if (!mbx->ops.write || !mbx->timeout)
+		goto out;
+
+	/* send msg*/
+	ret_val = mbx->ops.write(hw, msg, size);
+
+	/* if msg sent wait until we receive an ack */
+	if (!ret_val)
+		ret_val = e1000_poll_for_ack(hw);
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_read_v2p_mailbox - read v2p mailbox
+ *  @hw: pointer to the HW structure
+ *
+ *  This function is used to read the v2p mailbox without losing the read to
+ *  clear status bits.
+ **/
+static u32 e1000_read_v2p_mailbox(struct e1000_hw *hw)
+{
+	u32 v2p_mailbox = er32(V2PMAILBOX(0));
+
+	v2p_mailbox |= hw->dev_spec.vf.v2p_mailbox;
+	hw->dev_spec.vf.v2p_mailbox |= v2p_mailbox & E1000_V2PMAILBOX_R2C_BITS;
+
+	return v2p_mailbox;
+}
+
+/**
+ *  e1000_check_for_bit_vf - Determine if a status bit was set
+ *  @hw: pointer to the HW structure
+ *  @mask: bitmask for bits to be tested and cleared
+ *
+ *  This function is used to check for the read to clear bits within
+ *  the V2P mailbox.
+ **/
+static s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask)
+{
+	u32 v2p_mailbox = e1000_read_v2p_mailbox(hw);
+	s32 ret_val = -E1000_ERR_MBX;
+
+	if (v2p_mailbox & mask)
+		ret_val = E1000_SUCCESS;
+
+	hw->dev_spec.vf.v2p_mailbox &= ~mask;
+
+	return ret_val;
+}
+
+/**
+ *  e1000_check_for_msg_vf - checks to see if the PF has sent mail
+ *  @hw: pointer to the HW structure
+ *
+ *  returns SUCCESS if the PF has set the Status bit or else ERR_MBX
+ **/
+static s32 e1000_check_for_msg_vf(struct e1000_hw *hw)
+{
+	s32 ret_val = -E1000_ERR_MBX;
+
+	if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) {
+		ret_val = E1000_SUCCESS;
+		hw->mbx.stats.reqs++;
+	}
+
+	return ret_val;
+}
+
+/**
+ *  e1000_check_for_ack_vf - checks to see if the PF has ACK'd
+ *  @hw: pointer to the HW structure
+ *
+ *  returns SUCCESS if the PF has set the ACK bit or else ERR_MBX
+ **/
+static s32 e1000_check_for_ack_vf(struct e1000_hw *hw)
+{
+	s32 ret_val = -E1000_ERR_MBX;
+
+	if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) {
+		ret_val = E1000_SUCCESS;
+		hw->mbx.stats.acks++;
+	}
+
+	return ret_val;
+}
+
+/**
+ *  e1000_check_for_rst_vf - checks to see if the PF has reset
+ *  @hw: pointer to the HW structure
+ *
+ *  returns true if the PF has set the reset done bit or else false
+ **/
+static s32 e1000_check_for_rst_vf(struct e1000_hw *hw)
+{
+	s32 ret_val = -E1000_ERR_MBX;
+
+	if (!e1000_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD |
+	                                 E1000_V2PMAILBOX_RSTI))) {
+		ret_val = E1000_SUCCESS;
+		hw->mbx.stats.rsts++;
+	}
+
+	return ret_val;
+}
+
+/**
+ *  e1000_obtain_mbx_lock_vf - obtain mailbox lock
+ *  @hw: pointer to the HW structure
+ *
+ *  return SUCCESS if we obtained the mailbox lock
+ **/
+static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
+{
+	s32 ret_val = -E1000_ERR_MBX;
+
+	/* Take ownership of the buffer */
+	ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);
+
+	/* reserve mailbox for vf use */
+	if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU)
+		ret_val = E1000_SUCCESS;
+
+	return ret_val;
+}
+
+/**
+ *  e1000_write_mbx_vf - Write a message to the mailbox
+ *  @hw: pointer to the HW structure
+ *  @msg: The message buffer
+ *  @size: Length of buffer
+ *
+ *  returns SUCCESS if it successfully copied message into the buffer
+ **/
+static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+	s32 err;
+	u16 i;
+
+	/* lock the mailbox to prevent pf/vf race condition */
+	err = e1000_obtain_mbx_lock_vf(hw);
+	if (err)
+		goto out_no_write;
+
+	/* flush any ack or msg as we are going to overwrite mailbox */
+	e1000_check_for_ack_vf(hw);
+	e1000_check_for_msg_vf(hw);
+
+	/* copy the caller specified message to the mailbox memory buffer */
+	for (i = 0; i < size; i++)
+		array_ew32(VMBMEM(0), i, msg[i]);
+
+	/* update stats */
+	hw->mbx.stats.msgs_tx++;
+
+	/* Drop VFU and interrupt the PF to tell it a message has been sent */
+	ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_REQ);
+
+out_no_write:
+	return err;
+}
+
+/**
+ *  e1000_read_mbx_vf - Reads a message from the inbox intended for vf
+ *  @hw: pointer to the HW structure
+ *  @msg: The message buffer
+ *  @size: Length of buffer
+ *
+ *  returns SUCCESS if it successfuly read message from buffer
+ **/
+static s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+	s32 err;
+	u16 i;
+
+	/* lock the mailbox to prevent pf/vf race condition */
+	err = e1000_obtain_mbx_lock_vf(hw);
+	if (err)
+		goto out_no_read;
+
+	/* copy the message from the mailbox memory buffer */
+	for (i = 0; i < size; i++)
+		msg[i] = array_er32(VMBMEM(0), i);
+
+	/* Acknowledge receipt and release mailbox, then we're done */
+	ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_ACK);
+
+	/* update stats */
+	hw->mbx.stats.msgs_rx++;
+
+out_no_read:
+	return err;
+}
+
+/**
+ *  e1000_init_mbx_params_vf - set initial values for vf mailbox
+ *  @hw: pointer to the HW structure
+ *
+ *  Initializes the hw->mbx struct to correct values for vf mailbox
+ */
+s32 e1000_init_mbx_params_vf(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+
+	/* start mailbox as timed out and let the reset_hw call set the timeout
+	 * value to being communications */
+	mbx->timeout = 0;
+	mbx->usec_delay = E1000_VF_MBX_INIT_DELAY;
+
+	mbx->size = E1000_VFMAILBOX_SIZE;
+
+	mbx->ops.read = e1000_read_mbx_vf;
+	mbx->ops.write = e1000_write_mbx_vf;
+	mbx->ops.read_posted = e1000_read_posted_mbx;
+	mbx->ops.write_posted = e1000_write_posted_mbx;
+	mbx->ops.check_for_msg = e1000_check_for_msg_vf;
+	mbx->ops.check_for_ack = e1000_check_for_ack_vf;
+	mbx->ops.check_for_rst = e1000_check_for_rst_vf;
+
+	mbx->stats.msgs_tx = 0;
+	mbx->stats.msgs_rx = 0;
+	mbx->stats.reqs = 0;
+	mbx->stats.acks = 0;
+	mbx->stats.rsts = 0;
+
+	return E1000_SUCCESS;
+}
+

drivers/net/igbvf/mbx.h

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 1999 - 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_MBX_H_
+#define _E1000_MBX_H_
+
+#include "vf.h"
+
+#define E1000_V2PMAILBOX_REQ   0x00000001 /* Request for PF Ready bit */
+#define E1000_V2PMAILBOX_ACK   0x00000002 /* Ack PF message received */
+#define E1000_V2PMAILBOX_VFU   0x00000004 /* VF owns the mailbox buffer */
+#define E1000_V2PMAILBOX_PFU   0x00000008 /* PF owns the mailbox buffer */
+#define E1000_V2PMAILBOX_PFSTS 0x00000010 /* PF wrote a message in the MB */
+#define E1000_V2PMAILBOX_PFACK 0x00000020 /* PF ack the previous VF msg */
+#define E1000_V2PMAILBOX_RSTI  0x00000040 /* PF has reset indication */
+#define E1000_V2PMAILBOX_RSTD  0x00000080 /* PF has indicated reset done */
+#define E1000_V2PMAILBOX_R2C_BITS 0x000000B0 /* All read to clear bits */
+
+#define E1000_VFMAILBOX_SIZE   16 /* 16 32 bit words - 64 bytes */
+
+/* If it's a E1000_VF_* msg then it originates in the VF and is sent to the
+ * PF.  The reverse is true if it is E1000_PF_*.
+ * Message ACK's are the value or'd with 0xF0000000
+ */
+#define E1000_VT_MSGTYPE_ACK      0x80000000  /* Messages below or'd with
+                                               * this are the ACK */
+#define E1000_VT_MSGTYPE_NACK     0x40000000  /* Messages below or'd with
+                                               * this are the NACK */
+#define E1000_VT_MSGTYPE_CTS      0x20000000  /* Indicates that VF is still
+                                                 clear to send requests */
+
+/* We have a total wait time of 1s for vf mailbox posted messages */
+#define E1000_VF_MBX_INIT_TIMEOUT 2000 /* retry count for mailbox timeout */
+#define E1000_VF_MBX_INIT_DELAY   500  /* usec delay between retries */
+
+#define E1000_VT_MSGINFO_SHIFT    16
+/* bits 23:16 are used for exra info for certain messages */
+#define E1000_VT_MSGINFO_MASK     (0xFF << E1000_VT_MSGINFO_SHIFT)
+
+#define E1000_VF_RESET            0x01 /* VF requests reset */
+#define E1000_VF_SET_MAC_ADDR     0x02 /* VF requests PF to set MAC addr */
+#define E1000_VF_SET_MULTICAST    0x03 /* VF requests PF to set MC addr */
+#define E1000_VF_SET_VLAN         0x04 /* VF requests PF to set VLAN */
+#define E1000_VF_SET_LPE          0x05 /* VF requests PF to set VMOLR.LPE */
+
+#define E1000_PF_CONTROL_MSG      0x0100 /* PF control message */
+
+void e1000_init_mbx_ops_generic(struct e1000_hw *hw);
+s32 e1000_init_mbx_params_vf(struct e1000_hw *);
+
+#endif /* _E1000_MBX_H_ */

drivers/net/igbvf/netdev.c

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/tcp.h>
+#include <linux/ipv6.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/pm_qos_params.h>
+
+#include "igbvf.h"
+
+#define DRV_VERSION "1.0.0-k0"
+char igbvf_driver_name[] = "igbvf";
+const char igbvf_driver_version[] = DRV_VERSION;
+static const char igbvf_driver_string[] =
+				"Intel(R) Virtual Function Network Driver";
+static const char igbvf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
+
+static int igbvf_poll(struct napi_struct *napi, int budget);
+
+static struct igbvf_info igbvf_vf_info = {
+	.mac                    = e1000_vfadapt,
+	.flags                  = FLAG_HAS_JUMBO_FRAMES
+	                          | FLAG_RX_CSUM_ENABLED,
+	.pba                    = 10,
+	.init_ops               = e1000_init_function_pointers_vf,
+};
+
+static const struct igbvf_info *igbvf_info_tbl[] = {
+	[board_vf]              = &igbvf_vf_info,
+};
+
+/**
+ * igbvf_desc_unused - calculate if we have unused descriptors
+ **/
+static int igbvf_desc_unused(struct igbvf_ring *ring)
+{
+	if (ring->next_to_clean > ring->next_to_use)
+		return ring->next_to_clean - ring->next_to_use - 1;
+
+	return ring->count + ring->next_to_clean - ring->next_to_use - 1;
+}
+
+/**
+ * igbvf_receive_skb - helper function to handle Rx indications
+ * @adapter: board private structure
+ * @status: descriptor status field as written by hardware
+ * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
+ * @skb: pointer to sk_buff to be indicated to stack
+ **/
+static void igbvf_receive_skb(struct igbvf_adapter *adapter,
+                              struct net_device *netdev,
+                              struct sk_buff *skb,
+                              u32 status, u16 vlan)
+{
+	if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
+		vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
+		                         le16_to_cpu(vlan) &
+		                         E1000_RXD_SPC_VLAN_MASK);
+	else
+		netif_receive_skb(skb);
+
+	netdev->last_rx = jiffies;
+}
+
+static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter,
+                                         u32 status_err, struct sk_buff *skb)
+{
+	skb->ip_summed = CHECKSUM_NONE;
+
+	/* Ignore Checksum bit is set or checksum is disabled through ethtool */
+	if ((status_err & E1000_RXD_STAT_IXSM))
+		return;
+	/* TCP/UDP checksum error bit is set */
+	if (status_err &
+	    (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
+		/* let the stack verify checksum errors */
+		adapter->hw_csum_err++;
+		return;
+	}
+	/* It must be a TCP or UDP packet with a valid checksum */
+	if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+	adapter->hw_csum_good++;
+}
+
+/**
+ * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split
+ * @rx_ring: address of ring structure to repopulate
+ * @cleaned_count: number of buffers to repopulate
+ **/
+static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
+                                   int cleaned_count)
+{
+	struct igbvf_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_adv_rx_desc *rx_desc;
+	struct igbvf_buffer *buffer_info;
+	struct sk_buff *skb;
+	unsigned int i;
+	int bufsz;
+
+	i = rx_ring->next_to_use;
+	buffer_info = &rx_ring->buffer_info[i];
+
+	if (adapter->rx_ps_hdr_size)
+		bufsz = adapter->rx_ps_hdr_size;
+	else
+		bufsz = adapter->rx_buffer_len;
+	bufsz += NET_IP_ALIGN;
+
+	while (cleaned_count--) {
+		rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
+
+		if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
+			if (!buffer_info->page) {
+				buffer_info->page = alloc_page(GFP_ATOMIC);
+				if (!buffer_info->page) {
+					adapter->alloc_rx_buff_failed++;
+					goto no_buffers;
+				}
+				buffer_info->page_offset = 0;
+			} else {
+				buffer_info->page_offset ^= PAGE_SIZE / 2;
+			}
+			buffer_info->page_dma =
+				pci_map_page(pdev, buffer_info->page,
+				             buffer_info->page_offset,
+				             PAGE_SIZE / 2,
+				             PCI_DMA_FROMDEVICE);
+		}
+
+		if (!buffer_info->skb) {
+			skb = netdev_alloc_skb(netdev, bufsz);
+			if (!skb) {
+				adapter->alloc_rx_buff_failed++;
+				goto no_buffers;
+			}
+
+			/* Make buffer alignment 2 beyond a 16 byte boundary
+			 * this will result in a 16 byte aligned IP header after
+			 * the 14 byte MAC header is removed
+			 */
+			skb_reserve(skb, NET_IP_ALIGN);
+
+			buffer_info->skb = skb;
+			buffer_info->dma = pci_map_single(pdev, skb->data,
+			                                  bufsz,
+			                                  PCI_DMA_FROMDEVICE);
+		}
+		/* Refresh the desc even if buffer_addrs didn't change because
+		 * each write-back erases this info. */
+		if (adapter->rx_ps_hdr_size) {
+			rx_desc->read.pkt_addr =
+			     cpu_to_le64(buffer_info->page_dma);
+			rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
+		} else {
+			rx_desc->read.pkt_addr =
+			     cpu_to_le64(buffer_info->dma);
+			rx_desc->read.hdr_addr = 0;
+		}
+
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		buffer_info = &rx_ring->buffer_info[i];
+	}
+
+no_buffers:
+	if (rx_ring->next_to_use != i) {
+		rx_ring->next_to_use = i;
+		if (i == 0)
+			i = (rx_ring->count - 1);
+		else
+			i--;
+
+		/* Force memory writes to complete before letting h/w
+		 * know there are new descriptors to fetch.  (Only
+		 * applicable for weak-ordered memory model archs,
+		 * such as IA-64). */
+		wmb();
+		writel(i, adapter->hw.hw_addr + rx_ring->tail);
+	}
+}
+
+/**
+ * igbvf_clean_rx_irq - Send received data up the network stack; legacy
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
+                               int *work_done, int work_to_do)
+{
+	struct igbvf_ring *rx_ring = adapter->rx_ring;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_adv_rx_desc *rx_desc, *next_rxd;
+	struct igbvf_buffer *buffer_info, *next_buffer;
+	struct sk_buff *skb;
+	bool cleaned = false;
+	int cleaned_count = 0;
+	unsigned int total_bytes = 0, total_packets = 0;
+	unsigned int i;
+	u32 length, hlen, staterr;
+
+	i = rx_ring->next_to_clean;
+	rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
+	staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+
+	while (staterr & E1000_RXD_STAT_DD) {
+		if (*work_done >= work_to_do)
+			break;
+		(*work_done)++;
+
+		buffer_info = &rx_ring->buffer_info[i];
+
+		/* HW will not DMA in data larger than the given buffer, even
+		 * if it parses the (NFS, of course) header to be larger.  In
+		 * that case, it fills the header buffer and spills the rest
+		 * into the page.
+		 */
+		hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) &
+		  E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
+		if (hlen > adapter->rx_ps_hdr_size)
+			hlen = adapter->rx_ps_hdr_size;
+
+		length = le16_to_cpu(rx_desc->wb.upper.length);
+		cleaned = true;
+		cleaned_count++;
+
+		skb = buffer_info->skb;
+		prefetch(skb->data - NET_IP_ALIGN);
+		buffer_info->skb = NULL;
+		if (!adapter->rx_ps_hdr_size) {
+			pci_unmap_single(pdev, buffer_info->dma,
+			                 adapter->rx_buffer_len,
+			                 PCI_DMA_FROMDEVICE);
+			buffer_info->dma = 0;
+			skb_put(skb, length);
+			goto send_up;
+		}
+
+		if (!skb_shinfo(skb)->nr_frags) {
+			pci_unmap_single(pdev, buffer_info->dma,
+			                 adapter->rx_ps_hdr_size + NET_IP_ALIGN,
+			                 PCI_DMA_FROMDEVICE);
+			skb_put(skb, hlen);
+		}
+
+		if (length) {
+			pci_unmap_page(pdev, buffer_info->page_dma,
+			               PAGE_SIZE / 2,
+			               PCI_DMA_FROMDEVICE);
+			buffer_info->page_dma = 0;
+
+			skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++,
+			                   buffer_info->page,
+			                   buffer_info->page_offset,
+			                   length);
+
+			if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
+			    (page_count(buffer_info->page) != 1))
+				buffer_info->page = NULL;
+			else
+				get_page(buffer_info->page);
+
+			skb->len += length;
+			skb->data_len += length;
+			skb->truesize += length;
+		}
+send_up:
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i);
+		prefetch(next_rxd);
+		next_buffer = &rx_ring->buffer_info[i];
+
+		if (!(staterr & E1000_RXD_STAT_EOP)) {
+			buffer_info->skb = next_buffer->skb;
+			buffer_info->dma = next_buffer->dma;
+			next_buffer->skb = skb;
+			next_buffer->dma = 0;
+			goto next_desc;
+		}
+
+		if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
+			dev_kfree_skb_irq(skb);
+			goto next_desc;
+		}
+
+		total_bytes += skb->len;
+		total_packets++;
+
+		igbvf_rx_checksum_adv(adapter, staterr, skb);
+
+		skb->protocol = eth_type_trans(skb, netdev);
+
+		igbvf_receive_skb(adapter, netdev, skb, staterr,
+		                  rx_desc->wb.upper.vlan);
+
+		netdev->last_rx = jiffies;
+
+next_desc:
+		rx_desc->wb.upper.status_error = 0;
+
+		/* return some buffers to hardware, one at a time is too slow */
+		if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) {
+			igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
+			cleaned_count = 0;
+		}
+
+		/* use prefetched values */
+		rx_desc = next_rxd;
+		buffer_info = next_buffer;
+
+		staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	}
+
+	rx_ring->next_to_clean = i;
+	cleaned_count = igbvf_desc_unused(rx_ring);
+
+	if (cleaned_count)
+		igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
+
+	adapter->total_rx_packets += total_packets;
+	adapter->total_rx_bytes += total_bytes;
+	adapter->net_stats.rx_bytes += total_bytes;
+	adapter->net_stats.rx_packets += total_packets;
+	return cleaned;
+}
+
+static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
+                            struct igbvf_buffer *buffer_info)
+{
+	buffer_info->dma = 0;
+	if (buffer_info->skb) {
+		skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
+		              DMA_TO_DEVICE);
+		dev_kfree_skb_any(buffer_info->skb);
+		buffer_info->skb = NULL;
+	}
+	buffer_info->time_stamp = 0;
+}
+
+static void igbvf_print_tx_hang(struct igbvf_adapter *adapter)
+{
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	unsigned int i = tx_ring->next_to_clean;
+	unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
+	union e1000_adv_tx_desc *eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
+
+	/* detected Tx unit hang */
+	dev_err(&adapter->pdev->dev,
+	        "Detected Tx Unit Hang:\n"
+	        "  TDH                  <%x>\n"
+	        "  TDT                  <%x>\n"
+	        "  next_to_use          <%x>\n"
+	        "  next_to_clean        <%x>\n"
+	        "buffer_info[next_to_clean]:\n"
+	        "  time_stamp           <%lx>\n"
+	        "  next_to_watch        <%x>\n"
+	        "  jiffies              <%lx>\n"
+	        "  next_to_watch.status <%x>\n",
+	        readl(adapter->hw.hw_addr + tx_ring->head),
+	        readl(adapter->hw.hw_addr + tx_ring->tail),
+	        tx_ring->next_to_use,
+	        tx_ring->next_to_clean,
+	        tx_ring->buffer_info[eop].time_stamp,
+	        eop,
+	        jiffies,
+	        eop_desc->wb.status);
+}
+
+/**
+ * igbvf_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ **/
+int igbvf_setup_tx_resources(struct igbvf_adapter *adapter,
+                             struct igbvf_ring *tx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int size;
+
+	size = sizeof(struct igbvf_buffer) * tx_ring->count;
+	tx_ring->buffer_info = vmalloc(size);
+	if (!tx_ring->buffer_info)
+		goto err;
+	memset(tx_ring->buffer_info, 0, size);
+
+	/* round up to nearest 4K */
+	tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
+	tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+	tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
+					     &tx_ring->dma);
+
+	if (!tx_ring->desc)
+		goto err;
+
+	tx_ring->adapter = adapter;
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+
+	return 0;
+err:
+	vfree(tx_ring->buffer_info);
+	dev_err(&adapter->pdev->dev,
+	        "Unable to allocate memory for the transmit descriptor ring\n");
+	return -ENOMEM;
+}
+
+/**
+ * igbvf_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int igbvf_setup_rx_resources(struct igbvf_adapter *adapter,
+			     struct igbvf_ring *rx_ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int size, desc_len;
+
+	size = sizeof(struct igbvf_buffer) * rx_ring->count;
+	rx_ring->buffer_info = vmalloc(size);
+	if (!rx_ring->buffer_info)
+		goto err;
+	memset(rx_ring->buffer_info, 0, size);
+
+	desc_len = sizeof(union e1000_adv_rx_desc);
+
+	/* Round up to nearest 4K */
+	rx_ring->size = rx_ring->count * desc_len;
+	rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+	rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
+	                                     &rx_ring->dma);
+
+	if (!rx_ring->desc)
+		goto err;
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+
+	rx_ring->adapter = adapter;
+
+	return 0;
+
+err:
+	vfree(rx_ring->buffer_info);
+	rx_ring->buffer_info = NULL;
+	dev_err(&adapter->pdev->dev,
+	        "Unable to allocate memory for the receive descriptor ring\n");
+	return -ENOMEM;
+}
+
+/**
+ * igbvf_clean_tx_ring - Free Tx Buffers
+ * @tx_ring: ring to be cleaned
+ **/
+static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
+{
+	struct igbvf_adapter *adapter = tx_ring->adapter;
+	struct igbvf_buffer *buffer_info;
+	unsigned long size;
+	unsigned int i;
+
+	if (!tx_ring->buffer_info)
+		return;
+
+	/* Free all the Tx ring sk_buffs */
+	for (i = 0; i < tx_ring->count; i++) {
+		buffer_info = &tx_ring->buffer_info[i];
+		igbvf_put_txbuf(adapter, buffer_info);
+	}
+
+	size = sizeof(struct igbvf_buffer) * tx_ring->count;
+	memset(tx_ring->buffer_info, 0, size);
+
+	/* Zero out the descriptor ring */
+	memset(tx_ring->desc, 0, tx_ring->size);
+
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+
+	writel(0, adapter->hw.hw_addr + tx_ring->head);
+	writel(0, adapter->hw.hw_addr + tx_ring->tail);
+}
+
+/**
+ * igbvf_free_tx_resources - Free Tx Resources per Queue
+ * @tx_ring: ring to free resources from
+ *
+ * Free all transmit software resources
+ **/
+void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
+{
+	struct pci_dev *pdev = tx_ring->adapter->pdev;
+
+	igbvf_clean_tx_ring(tx_ring);
+
+	vfree(tx_ring->buffer_info);
+	tx_ring->buffer_info = NULL;
+
+	pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
+
+	tx_ring->desc = NULL;
+}
+
+/**
+ * igbvf_clean_rx_ring - Free Rx Buffers per Queue
+ * @adapter: board private structure
+ **/
+static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring)
+{
+	struct igbvf_adapter *adapter = rx_ring->adapter;
+	struct igbvf_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
+	unsigned long size;
+	unsigned int i;
+
+	if (!rx_ring->buffer_info)
+		return;
+
+	/* Free all the Rx ring sk_buffs */
+	for (i = 0; i < rx_ring->count; i++) {
+		buffer_info = &rx_ring->buffer_info[i];
+		if (buffer_info->dma) {
+			if (adapter->rx_ps_hdr_size){
+				pci_unmap_single(pdev, buffer_info->dma,
+				                 adapter->rx_ps_hdr_size,
+				                 PCI_DMA_FROMDEVICE);
+			} else {
+				pci_unmap_single(pdev, buffer_info->dma,
+				                 adapter->rx_buffer_len,
+				                 PCI_DMA_FROMDEVICE);
+			}
+			buffer_info->dma = 0;
+		}
+
+		if (buffer_info->skb) {
+			dev_kfree_skb(buffer_info->skb);
+			buffer_info->skb = NULL;
+		}
+
+		if (buffer_info->page) {
+			if (buffer_info->page_dma)
+				pci_unmap_page(pdev, buffer_info->page_dma,
+				               PAGE_SIZE / 2,
+				               PCI_DMA_FROMDEVICE);
+			put_page(buffer_info->page);
+			buffer_info->page = NULL;
+			buffer_info->page_dma = 0;
+			buffer_info->page_offset = 0;
+		}
+	}
+
+	size = sizeof(struct igbvf_buffer) * rx_ring->count;
+	memset(rx_ring->buffer_info, 0, size);
+
+	/* Zero out the descriptor ring */
+	memset(rx_ring->desc, 0, rx_ring->size);
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+
+	writel(0, adapter->hw.hw_addr + rx_ring->head);
+	writel(0, adapter->hw.hw_addr + rx_ring->tail);
+}
+
+/**
+ * igbvf_free_rx_resources - Free Rx Resources
+ * @rx_ring: ring to clean the resources from
+ *
+ * Free all receive software resources
+ **/
+
+void igbvf_free_rx_resources(struct igbvf_ring *rx_ring)
+{
+	struct pci_dev *pdev = rx_ring->adapter->pdev;
+
+	igbvf_clean_rx_ring(rx_ring);
+
+	vfree(rx_ring->buffer_info);
+	rx_ring->buffer_info = NULL;
+
+	dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
+	                  rx_ring->dma);
+	rx_ring->desc = NULL;
+}
+
+/**
+ * igbvf_update_itr - update the dynamic ITR value based on statistics
+ * @adapter: pointer to adapter
+ * @itr_setting: current adapter->itr
+ * @packets: the number of packets during this measurement interval
+ * @bytes: the number of bytes during this measurement interval
+ *
+ *      Stores a new ITR value based on packets and byte
+ *      counts during the last interrupt.  The advantage of per interrupt
+ *      computation is faster updates and more accurate ITR for the current
+ *      traffic pattern.  Constants in this function were computed
+ *      based on theoretical maximum wire speed and thresholds were set based
+ *      on testing data as well as attempting to minimize response time
+ *      while increasing bulk throughput.  This functionality is controlled
+ *      by the InterruptThrottleRate module parameter.
+ **/
+static unsigned int igbvf_update_itr(struct igbvf_adapter *adapter,
+                                     u16 itr_setting, int packets,
+                                     int bytes)
+{
+	unsigned int retval = itr_setting;
+
+	if (packets == 0)
+		goto update_itr_done;
+
+	switch (itr_setting) {
+	case lowest_latency:
+		/* handle TSO and jumbo frames */
+		if (bytes/packets > 8000)
+			retval = bulk_latency;
+		else if ((packets < 5) && (bytes > 512))
+			retval = low_latency;
+		break;
+	case low_latency:  /* 50 usec aka 20000 ints/s */
+		if (bytes > 10000) {
+			/* this if handles the TSO accounting */
+			if (bytes/packets > 8000)
+				retval = bulk_latency;
+			else if ((packets < 10) || ((bytes/packets) > 1200))
+				retval = bulk_latency;
+			else if ((packets > 35))
+				retval = lowest_latency;
+		} else if (bytes/packets > 2000) {
+			retval = bulk_latency;
+		} else if (packets <= 2 && bytes < 512) {
+			retval = lowest_latency;
+		}
+		break;
+	case bulk_latency: /* 250 usec aka 4000 ints/s */
+		if (bytes > 25000) {
+			if (packets > 35)
+				retval = low_latency;
+		} else if (bytes < 6000) {
+			retval = low_latency;
+		}
+		break;
+	}
+
+update_itr_done:
+	return retval;
+}
+
+static void igbvf_set_itr(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u16 current_itr;
+	u32 new_itr = adapter->itr;
+
+	adapter->tx_itr = igbvf_update_itr(adapter, adapter->tx_itr,
+	                                   adapter->total_tx_packets,
+	                                   adapter->total_tx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
+		adapter->tx_itr = low_latency;
+
+	adapter->rx_itr = igbvf_update_itr(adapter, adapter->rx_itr,
+	                                   adapter->total_rx_packets,
+	                                   adapter->total_rx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
+		adapter->rx_itr = low_latency;
+
+	current_itr = max(adapter->rx_itr, adapter->tx_itr);
+
+	switch (current_itr) {
+	/* counts and packets in update_itr are dependent on these numbers */
+	case lowest_latency:
+		new_itr = 70000;
+		break;
+	case low_latency:
+		new_itr = 20000; /* aka hwitr = ~200 */
+		break;
+	case bulk_latency:
+		new_itr = 4000;
+		break;
+	default:
+		break;
+	}
+
+	if (new_itr != adapter->itr) {
+		/*
+		 * this attempts to bias the interrupt rate towards Bulk
+		 * by adding intermediate steps when interrupt rate is
+		 * increasing
+		 */
+		new_itr = new_itr > adapter->itr ?
+		             min(adapter->itr + (new_itr >> 2), new_itr) :
+		             new_itr;
+		adapter->itr = new_itr;
+		adapter->rx_ring->itr_val = 1952;
+
+		if (adapter->msix_entries)
+			adapter->rx_ring->set_itr = 1;
+		else
+			ew32(ITR, 1952);
+	}
+}
+
+/**
+ * igbvf_clean_tx_irq - Reclaim resources after transmit completes
+ * @adapter: board private structure
+ * returns true if ring is completely cleaned
+ **/
+static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
+{
+	struct igbvf_adapter *adapter = tx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	struct igbvf_buffer *buffer_info;
+	struct sk_buff *skb;
+	union e1000_adv_tx_desc *tx_desc, *eop_desc;
+	unsigned int total_bytes = 0, total_packets = 0;
+	unsigned int i, eop, count = 0;
+	bool cleaned = false;
+
+	i = tx_ring->next_to_clean;
+	eop = tx_ring->buffer_info[i].next_to_watch;
+	eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
+
+	while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) &&
+	       (count < tx_ring->count)) {
+		for (cleaned = false; !cleaned; count++) {
+			tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
+			buffer_info = &tx_ring->buffer_info[i];
+			cleaned = (i == eop);
+			skb = buffer_info->skb;
+
+			if (skb) {
+				unsigned int segs, bytecount;
+
+				/* gso_segs is currently only valid for tcp */
+				segs = skb_shinfo(skb)->gso_segs ?: 1;
+				/* multiply data chunks by size of headers */
+				bytecount = ((segs - 1) * skb_headlen(skb)) +
+				            skb->len;
+				total_packets += segs;
+				total_bytes += bytecount;
+			}
+
+			igbvf_put_txbuf(adapter, buffer_info);
+			tx_desc->wb.status = 0;
+
+			i++;
+			if (i == tx_ring->count)
+				i = 0;
+		}
+		eop = tx_ring->buffer_info[i].next_to_watch;
+		eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
+	}
+
+	tx_ring->next_to_clean = i;
+
+	if (unlikely(count &&
+	             netif_carrier_ok(netdev) &&
+	             igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
+		/* Make sure that anybody stopping the queue after this
+		 * sees the new next_to_clean.
+		 */
+		smp_mb();
+		if (netif_queue_stopped(netdev) &&
+		    !(test_bit(__IGBVF_DOWN, &adapter->state))) {
+			netif_wake_queue(netdev);
+			++adapter->restart_queue;
+		}
+	}
+
+	if (adapter->detect_tx_hung) {
+		/* Detect a transmit hang in hardware, this serializes the
+		 * check with the clearing of time_stamp and movement of i */
+		adapter->detect_tx_hung = false;
+		if (tx_ring->buffer_info[i].time_stamp &&
+		    time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
+		               (adapter->tx_timeout_factor * HZ))
+		    && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
+
+			tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
+			/* detected Tx unit hang */
+			igbvf_print_tx_hang(adapter);
+
+			netif_stop_queue(netdev);
+		}
+	}
+	adapter->net_stats.tx_bytes += total_bytes;
+	adapter->net_stats.tx_packets += total_packets;
+	return (count < tx_ring->count);
+}
+
+static irqreturn_t igbvf_msix_other(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	adapter->int_counter1++;
+
+	netif_carrier_off(netdev);
+	hw->mac.get_link_status = 1;
+	if (!test_bit(__IGBVF_DOWN, &adapter->state))
+		mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+	ew32(EIMS, adapter->eims_other);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t igbvf_intr_msix_tx(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+
+
+	adapter->total_tx_bytes = 0;
+	adapter->total_tx_packets = 0;
+
+	/* auto mask will automatically reenable the interrupt when we write
+	 * EICS */
+	if (!igbvf_clean_tx_irq(tx_ring))
+		/* Ring was not completely cleaned, so fire another interrupt */
+		ew32(EICS, tx_ring->eims_value);
+	else
+		ew32(EIMS, tx_ring->eims_value);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t igbvf_intr_msix_rx(int irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	adapter->int_counter0++;
+
+	/* Write the ITR value calculated at the end of the
+	 * previous interrupt.
+	 */
+	if (adapter->rx_ring->set_itr) {
+		writel(adapter->rx_ring->itr_val,
+		       adapter->hw.hw_addr + adapter->rx_ring->itr_register);
+		adapter->rx_ring->set_itr = 0;
+	}
+
+	if (napi_schedule_prep(&adapter->rx_ring->napi)) {
+		adapter->total_rx_bytes = 0;
+		adapter->total_rx_packets = 0;
+		__napi_schedule(&adapter->rx_ring->napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+#define IGBVF_NO_QUEUE -1
+
+static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue,
+                                int tx_queue, int msix_vector)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ivar, index;
+
+	/* 82576 uses a table-based method for assigning vectors.
+	   Each queue has a single entry in the table to which we write
+	   a vector number along with a "valid" bit.  Sadly, the layout
+	   of the table is somewhat counterintuitive. */
+	if (rx_queue > IGBVF_NO_QUEUE) {
+		index = (rx_queue >> 1);
+		ivar = array_er32(IVAR0, index);
+		if (rx_queue & 0x1) {
+			/* vector goes into third byte of register */
+			ivar = ivar & 0xFF00FFFF;
+			ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
+		} else {
+			/* vector goes into low byte of register */
+			ivar = ivar & 0xFFFFFF00;
+			ivar |= msix_vector | E1000_IVAR_VALID;
+		}
+		adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector;
+		array_ew32(IVAR0, index, ivar);
+	}
+	if (tx_queue > IGBVF_NO_QUEUE) {
+		index = (tx_queue >> 1);
+		ivar = array_er32(IVAR0, index);
+		if (tx_queue & 0x1) {
+			/* vector goes into high byte of register */
+			ivar = ivar & 0x00FFFFFF;
+			ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
+		} else {
+			/* vector goes into second byte of register */
+			ivar = ivar & 0xFFFF00FF;
+			ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
+		}
+		adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector;
+		array_ew32(IVAR0, index, ivar);
+	}
+}
+
+/**
+ * igbvf_configure_msix - Configure MSI-X hardware
+ *
+ * igbvf_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void igbvf_configure_msix(struct igbvf_adapter *adapter)
+{
+	u32 tmp;
+	struct e1000_hw *hw = &adapter->hw;
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	struct igbvf_ring *rx_ring = adapter->rx_ring;
+	int vector = 0;
+
+	adapter->eims_enable_mask = 0;
+
+	igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++);
+	adapter->eims_enable_mask |= tx_ring->eims_value;
+	if (tx_ring->itr_val)
+		writel(tx_ring->itr_val,
+		       hw->hw_addr + tx_ring->itr_register);
+	else
+		writel(1952, hw->hw_addr + tx_ring->itr_register);
+
+	igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++);
+	adapter->eims_enable_mask |= rx_ring->eims_value;
+	if (rx_ring->itr_val)
+		writel(rx_ring->itr_val,
+		       hw->hw_addr + rx_ring->itr_register);
+	else
+		writel(1952, hw->hw_addr + rx_ring->itr_register);
+
+	/* set vector for other causes, i.e. link changes */
+
+	tmp = (vector++ | E1000_IVAR_VALID);
+
+	ew32(IVAR_MISC, tmp);
+
+	adapter->eims_enable_mask = (1 << (vector)) - 1;
+	adapter->eims_other = 1 << (vector - 1);
+	e1e_flush();
+}
+
+void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter)
+{
+	if (adapter->msix_entries) {
+		pci_disable_msix(adapter->pdev);
+		kfree(adapter->msix_entries);
+		adapter->msix_entries = NULL;
+	}
+}
+
+/**
+ * igbvf_set_interrupt_capability - set MSI or MSI-X if supported
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter)
+{
+	int err = -ENOMEM;
+	int i;
+
+	/* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */
+	adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry),
+	                                GFP_KERNEL);
+	if (adapter->msix_entries) {
+		for (i = 0; i < 3; i++)
+			adapter->msix_entries[i].entry = i;
+
+		err = pci_enable_msix(adapter->pdev,
+		                      adapter->msix_entries, 3);
+	}
+
+	if (err) {
+		/* MSI-X failed */
+		dev_err(&adapter->pdev->dev,
+		        "Failed to initialize MSI-X interrupts.\n");
+		igbvf_reset_interrupt_capability(adapter);
+	}
+}
+
+/**
+ * igbvf_request_msix - Initialize MSI-X interrupts
+ *
+ * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int igbvf_request_msix(struct igbvf_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int err = 0, vector = 0;
+
+	if (strlen(netdev->name) < (IFNAMSIZ - 5)) {
+		sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
+		sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
+	} else {
+		memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+		memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+	}
+
+	err = request_irq(adapter->msix_entries[vector].vector,
+	                  &igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
+	                  netdev);
+	if (err)
+		goto out;
+
+	adapter->tx_ring->itr_register = E1000_EITR(vector);
+	adapter->tx_ring->itr_val = 1952;
+	vector++;
+
+	err = request_irq(adapter->msix_entries[vector].vector,
+	                  &igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
+	                  netdev);
+	if (err)
+		goto out;
+
+	adapter->rx_ring->itr_register = E1000_EITR(vector);
+	adapter->rx_ring->itr_val = 1952;
+	vector++;
+
+	err = request_irq(adapter->msix_entries[vector].vector,
+	                  &igbvf_msix_other, 0, netdev->name, netdev);
+	if (err)
+		goto out;
+
+	igbvf_configure_msix(adapter);
+	return 0;
+out:
+	return err;
+}
+
+/**
+ * igbvf_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ **/
+static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
+	if (!adapter->tx_ring)
+		return -ENOMEM;
+
+	adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
+	if (!adapter->rx_ring) {
+		kfree(adapter->tx_ring);
+		return -ENOMEM;
+	}
+
+	netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64);
+
+	return 0;
+}
+
+/**
+ * igbvf_request_irq - initialize interrupts
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int igbvf_request_irq(struct igbvf_adapter *adapter)
+{
+	int err = -1;
+
+	/* igbvf supports msi-x only */
+	if (adapter->msix_entries)
+		err = igbvf_request_msix(adapter);
+
+	if (!err)
+		return err;
+
+	dev_err(&adapter->pdev->dev,
+	        "Unable to allocate interrupt, Error: %d\n", err);
+
+	return err;
+}
+
+static void igbvf_free_irq(struct igbvf_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int vector;
+
+	if (adapter->msix_entries) {
+		for (vector = 0; vector < 3; vector++)
+			free_irq(adapter->msix_entries[vector].vector, netdev);
+	}
+}
+
+/**
+ * igbvf_irq_disable - Mask off interrupt generation on the NIC
+ **/
+static void igbvf_irq_disable(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	ew32(EIMC, ~0);
+
+	if (adapter->msix_entries)
+		ew32(EIAC, 0);
+}
+
+/**
+ * igbvf_irq_enable - Enable default interrupt generation settings
+ **/
+static void igbvf_irq_enable(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	ew32(EIAC, adapter->eims_enable_mask);
+	ew32(EIAM, adapter->eims_enable_mask);
+	ew32(EIMS, adapter->eims_enable_mask);
+}
+
+/**
+ * igbvf_poll - NAPI Rx polling callback
+ * @napi: struct associated with this polling callback
+ * @budget: amount of packets driver is allowed to process this poll
+ **/
+static int igbvf_poll(struct napi_struct *napi, int budget)
+{
+	struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi);
+	struct igbvf_adapter *adapter = rx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+	int work_done = 0;
+
+	igbvf_clean_rx_irq(adapter, &work_done, budget);
+
+	/* If not enough Rx work done, exit the polling mode */
+	if (work_done < budget) {
+		napi_complete(napi);
+
+		if (adapter->itr_setting & 3)
+			igbvf_set_itr(adapter);
+
+		if (!test_bit(__IGBVF_DOWN, &adapter->state))
+			ew32(EIMS, adapter->rx_ring->eims_value);
+	}
+
+	return work_done;
+}
+
+/**
+ * igbvf_set_rlpml - set receive large packet maximum length
+ * @adapter: board private structure
+ *
+ * Configure the maximum size of packets that will be received
+ */
+static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
+{
+	int max_frame_size = adapter->max_frame_size;
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->vlgrp)
+		max_frame_size += VLAN_TAG_SIZE;
+
+	e1000_rlpml_set_vf(hw, max_frame_size);
+}
+
+static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (hw->mac.ops.set_vfta(hw, vid, true))
+		dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
+}
+
+static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	igbvf_irq_disable(adapter);
+	vlan_group_set_device(adapter->vlgrp, vid, NULL);
+
+	if (!test_bit(__IGBVF_DOWN, &adapter->state))
+		igbvf_irq_enable(adapter);
+
+	if (hw->mac.ops.set_vfta(hw, vid, false))
+		dev_err(&adapter->pdev->dev,
+		        "Failed to remove vlan id %d\n", vid);
+}
+
+static void igbvf_vlan_rx_register(struct net_device *netdev,
+                                   struct vlan_group *grp)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	adapter->vlgrp = grp;
+}
+
+static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
+{
+	u16 vid;
+
+	if (!adapter->vlgrp)
+		return;
+
+	for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+		if (!vlan_group_get_device(adapter->vlgrp, vid))
+			continue;
+		igbvf_vlan_rx_add_vid(adapter->netdev, vid);
+	}
+
+	igbvf_set_rlpml(adapter);
+}
+
+/**
+ * igbvf_configure_tx - Configure Transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void igbvf_configure_tx(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	u64 tdba;
+	u32 txdctl, dca_txctrl;
+
+	/* disable transmits */
+	txdctl = er32(TXDCTL(0));
+	ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
+	msleep(10);
+
+	/* Setup the HW Tx Head and Tail descriptor pointers */
+	ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
+	tdba = tx_ring->dma;
+	ew32(TDBAL(0), (tdba & DMA_32BIT_MASK));
+	ew32(TDBAH(0), (tdba >> 32));
+	ew32(TDH(0), 0);
+	ew32(TDT(0), 0);
+	tx_ring->head = E1000_TDH(0);
+	tx_ring->tail = E1000_TDT(0);
+
+	/* Turn off Relaxed Ordering on head write-backs.  The writebacks
+	 * MUST be delivered in order or it will completely screw up
+	 * our bookeeping.
+	 */
+	dca_txctrl = er32(DCA_TXCTRL(0));
+	dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
+	ew32(DCA_TXCTRL(0), dca_txctrl);
+
+	/* enable transmits */
+	txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
+	ew32(TXDCTL(0), txdctl);
+
+	/* Setup Transmit Descriptor Settings for eop descriptor */
+	adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS;
+
+	/* enable Report Status bit */
+	adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS;
+
+	adapter->tx_queue_len = adapter->netdev->tx_queue_len;
+}
+
+/**
+ * igbvf_setup_srrctl - configure the receive control registers
+ * @adapter: Board private structure
+ **/
+static void igbvf_setup_srrctl(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 srrctl = 0;
+
+	srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK |
+	            E1000_SRRCTL_BSIZEHDR_MASK |
+	            E1000_SRRCTL_BSIZEPKT_MASK);
+
+	/* Enable queue drop to avoid head of line blocking */
+	srrctl |= E1000_SRRCTL_DROP_EN;
+
+	/* Setup buffer sizes */
+	srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >>
+	          E1000_SRRCTL_BSIZEPKT_SHIFT;
+
+	if (adapter->rx_buffer_len < 2048) {
+		adapter->rx_ps_hdr_size = 0;
+		srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
+	} else {
+		adapter->rx_ps_hdr_size = 128;
+		srrctl |= adapter->rx_ps_hdr_size <<
+		          E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
+		srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
+	}
+
+	ew32(SRRCTL(0), srrctl);
+}
+
+/**
+ * igbvf_configure_rx - Configure Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void igbvf_configure_rx(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct igbvf_ring *rx_ring = adapter->rx_ring;
+	u64 rdba;
+	u32 rdlen, rxdctl;
+
+	/* disable receives */
+	rxdctl = er32(RXDCTL(0));
+	ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
+	msleep(10);
+
+	rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc);
+
+	/*
+	 * Setup the HW Rx Head and Tail Descriptor Pointers and
+	 * the Base and Length of the Rx Descriptor Ring
+	 */
+	rdba = rx_ring->dma;
+	ew32(RDBAL(0), (rdba & DMA_32BIT_MASK));
+	ew32(RDBAH(0), (rdba >> 32));
+	ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc));
+	rx_ring->head = E1000_RDH(0);
+	rx_ring->tail = E1000_RDT(0);
+	ew32(RDH(0), 0);
+	ew32(RDT(0), 0);
+
+	rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
+	rxdctl &= 0xFFF00000;
+	rxdctl |= IGBVF_RX_PTHRESH;
+	rxdctl |= IGBVF_RX_HTHRESH << 8;
+	rxdctl |= IGBVF_RX_WTHRESH << 16;
+
+	igbvf_set_rlpml(adapter);
+
+	/* enable receives */
+	ew32(RXDCTL(0), rxdctl);
+}
+
+/**
+ * igbvf_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated.  This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ **/
+static void igbvf_set_multi(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct dev_mc_list *mc_ptr;
+	u8  *mta_list = NULL;
+	int i;
+
+	if (netdev->mc_count) {
+		mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
+		if (!mta_list) {
+			dev_err(&adapter->pdev->dev,
+			        "failed to allocate multicast filter list\n");
+			return;
+		}
+	}
+
+	/* prepare a packed array of only addresses. */
+	mc_ptr = netdev->mc_list;
+
+	for (i = 0; i < netdev->mc_count; i++) {
+		if (!mc_ptr)
+			break;
+		memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
+		       ETH_ALEN);
+		mc_ptr = mc_ptr->next;
+	}
+
+	hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0);
+	kfree(mta_list);
+}
+
+/**
+ * igbvf_configure - configure the hardware for Rx and Tx
+ * @adapter: private board structure
+ **/
+static void igbvf_configure(struct igbvf_adapter *adapter)
+{
+	igbvf_set_multi(adapter->netdev);
+
+	igbvf_restore_vlan(adapter);
+
+	igbvf_configure_tx(adapter);
+	igbvf_setup_srrctl(adapter);
+	igbvf_configure_rx(adapter);
+	igbvf_alloc_rx_buffers(adapter->rx_ring,
+	                       igbvf_desc_unused(adapter->rx_ring));
+}
+
+/* igbvf_reset - bring the hardware into a known good state
+ *
+ * This function boots the hardware and enables some settings that
+ * require a configuration cycle of the hardware - those cannot be
+ * set/changed during runtime. After reset the device needs to be
+ * properly configured for Rx, Tx etc.
+ */
+void igbvf_reset(struct igbvf_adapter *adapter)
+{
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* Allow time for pending master requests to run */
+	if (mac->ops.reset_hw(hw))
+		dev_err(&adapter->pdev->dev, "PF still resetting\n");
+
+	mac->ops.init_hw(hw);
+
+	if (is_valid_ether_addr(adapter->hw.mac.addr)) {
+		memcpy(netdev->dev_addr, adapter->hw.mac.addr,
+		       netdev->addr_len);
+		memcpy(netdev->perm_addr, adapter->hw.mac.addr,
+		       netdev->addr_len);
+	}
+}
+
+int igbvf_up(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* hardware has been reset, we need to reload some things */
+	igbvf_configure(adapter);
+
+	clear_bit(__IGBVF_DOWN, &adapter->state);
+
+	napi_enable(&adapter->rx_ring->napi);
+	if (adapter->msix_entries)
+		igbvf_configure_msix(adapter);
+
+	/* Clear any pending interrupts. */
+	er32(EICR);
+	igbvf_irq_enable(adapter);
+
+	/* start the watchdog */
+	hw->mac.get_link_status = 1;
+	mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+
+	return 0;
+}
+
+void igbvf_down(struct igbvf_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rxdctl, txdctl;
+
+	/*
+	 * signal that we're down so the interrupt handler does not
+	 * reschedule our watchdog timer
+	 */
+	set_bit(__IGBVF_DOWN, &adapter->state);
+
+	/* disable receives in the hardware */
+	rxdctl = er32(RXDCTL(0));
+	ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
+
+	netif_stop_queue(netdev);
+
+	/* disable transmits in the hardware */
+	txdctl = er32(TXDCTL(0));
+	ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
+
+	/* flush both disables and wait for them to finish */
+	e1e_flush();
+	msleep(10);
+
+	napi_disable(&adapter->rx_ring->napi);
+
+	igbvf_irq_disable(adapter);
+
+	del_timer_sync(&adapter->watchdog_timer);
+
+	netdev->tx_queue_len = adapter->tx_queue_len;
+	netif_carrier_off(netdev);
+
+	/* record the stats before reset*/
+	igbvf_update_stats(adapter);
+
+	adapter->link_speed = 0;
+	adapter->link_duplex = 0;
+
+	igbvf_reset(adapter);
+	igbvf_clean_tx_ring(adapter->tx_ring);
+	igbvf_clean_rx_ring(adapter->rx_ring);
+}
+
+void igbvf_reinit_locked(struct igbvf_adapter *adapter)
+{
+	might_sleep();
+	while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+		msleep(1);
+	igbvf_down(adapter);
+	igbvf_up(adapter);
+	clear_bit(__IGBVF_RESETTING, &adapter->state);
+}
+
+/**
+ * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * igbvf_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 igbvf_sw_init(struct igbvf_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	s32 rc;
+
+	adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
+	adapter->rx_ps_hdr_size = 0;
+	adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+	adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+
+	adapter->tx_int_delay = 8;
+	adapter->tx_abs_int_delay = 32;
+	adapter->rx_int_delay = 0;
+	adapter->rx_abs_int_delay = 8;
+	adapter->itr_setting = 3;
+	adapter->itr = 20000;
+
+	/* Set various function pointers */
+	adapter->ei->init_ops(&adapter->hw);
+
+	rc = adapter->hw.mac.ops.init_params(&adapter->hw);
+	if (rc)
+		return rc;
+
+	rc = adapter->hw.mbx.ops.init_params(&adapter->hw);
+	if (rc)
+		return rc;
+
+	igbvf_set_interrupt_capability(adapter);
+
+	if (igbvf_alloc_queues(adapter))
+		return -ENOMEM;
+
+	spin_lock_init(&adapter->tx_queue_lock);
+
+	/* Explicitly disable IRQ since the NIC can be in any state. */
+	igbvf_irq_disable(adapter);
+
+	spin_lock_init(&adapter->stats_lock);
+
+	set_bit(__IGBVF_DOWN, &adapter->state);
+	return 0;
+}
+
+static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	adapter->stats.last_gprc = er32(VFGPRC);
+	adapter->stats.last_gorc = er32(VFGORC);
+	adapter->stats.last_gptc = er32(VFGPTC);
+	adapter->stats.last_gotc = er32(VFGOTC);
+	adapter->stats.last_mprc = er32(VFMPRC);
+	adapter->stats.last_gotlbc = er32(VFGOTLBC);
+	adapter->stats.last_gptlbc = er32(VFGPTLBC);
+	adapter->stats.last_gorlbc = er32(VFGORLBC);
+	adapter->stats.last_gprlbc = er32(VFGPRLBC);
+
+	adapter->stats.base_gprc = er32(VFGPRC);
+	adapter->stats.base_gorc = er32(VFGORC);
+	adapter->stats.base_gptc = er32(VFGPTC);
+	adapter->stats.base_gotc = er32(VFGOTC);
+	adapter->stats.base_mprc = er32(VFMPRC);
+	adapter->stats.base_gotlbc = er32(VFGOTLBC);
+	adapter->stats.base_gptlbc = er32(VFGPTLBC);
+	adapter->stats.base_gorlbc = er32(VFGORLBC);
+	adapter->stats.base_gprlbc = er32(VFGPRLBC);
+}
+
+/**
+ * igbvf_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).  At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+static int igbvf_open(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	int err;
+
+	/* disallow open during test */
+	if (test_bit(__IGBVF_TESTING, &adapter->state))
+		return -EBUSY;
+
+	/* allocate transmit descriptors */
+	err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
+	if (err)
+		goto err_setup_tx;
+
+	/* allocate receive descriptors */
+	err = igbvf_setup_rx_resources(adapter, adapter->rx_ring);
+	if (err)
+		goto err_setup_rx;
+
+	/*
+	 * before we allocate an interrupt, we must be ready to handle it.
+	 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
+	 * as soon as we call pci_request_irq, so we have to setup our
+	 * clean_rx handler before we do so.
+	 */
+	igbvf_configure(adapter);
+
+	err = igbvf_request_irq(adapter);
+	if (err)
+		goto err_req_irq;
+
+	/* From here on the code is the same as igbvf_up() */
+	clear_bit(__IGBVF_DOWN, &adapter->state);
+
+	napi_enable(&adapter->rx_ring->napi);
+
+	/* clear any pending interrupts */
+	er32(EICR);
+
+	igbvf_irq_enable(adapter);
+
+	/* start the watchdog */
+	hw->mac.get_link_status = 1;
+	mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+	return 0;
+
+err_req_irq:
+	igbvf_free_rx_resources(adapter->rx_ring);
+err_setup_rx:
+	igbvf_free_tx_resources(adapter->tx_ring);
+err_setup_tx:
+	igbvf_reset(adapter);
+
+	return err;
+}
+
+/**
+ * igbvf_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the drivers control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int igbvf_close(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
+	igbvf_down(adapter);
+
+	igbvf_free_irq(adapter);
+
+	igbvf_free_tx_resources(adapter->tx_ring);
+	igbvf_free_rx_resources(adapter->rx_ring);
+
+	return 0;
+}
+/**
+ * igbvf_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igbvf_set_mac(struct net_device *netdev, void *p)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
+
+	hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
+
+	if (memcmp(addr->sa_data, hw->mac.addr, 6))
+		return -EADDRNOTAVAIL;
+
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+	return 0;
+}
+
+#define UPDATE_VF_COUNTER(reg, name)                                    \
+	{                                                               \
+		u32 current_counter = er32(reg);                        \
+		if (current_counter < adapter->stats.last_##name)       \
+			adapter->stats.name += 0x100000000LL;           \
+		adapter->stats.last_##name = current_counter;           \
+		adapter->stats.name &= 0xFFFFFFFF00000000LL;            \
+		adapter->stats.name |= current_counter;                 \
+	}
+
+/**
+ * igbvf_update_stats - Update the board statistics counters
+ * @adapter: board private structure
+**/
+void igbvf_update_stats(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct pci_dev *pdev = adapter->pdev;
+
+	/*
+	 * Prevent stats update while adapter is being reset, link is down
+	 * or if the pci connection is down.
+	 */
+	if (adapter->link_speed == 0)
+		return;
+
+	if (test_bit(__IGBVF_RESETTING, &adapter->state))
+		return;
+
+	if (pci_channel_offline(pdev))
+		return;
+
+	UPDATE_VF_COUNTER(VFGPRC, gprc);
+	UPDATE_VF_COUNTER(VFGORC, gorc);
+	UPDATE_VF_COUNTER(VFGPTC, gptc);
+	UPDATE_VF_COUNTER(VFGOTC, gotc);
+	UPDATE_VF_COUNTER(VFMPRC, mprc);
+	UPDATE_VF_COUNTER(VFGOTLBC, gotlbc);
+	UPDATE_VF_COUNTER(VFGPTLBC, gptlbc);
+	UPDATE_VF_COUNTER(VFGORLBC, gorlbc);
+	UPDATE_VF_COUNTER(VFGPRLBC, gprlbc);
+
+	/* Fill out the OS statistics structure */
+	adapter->net_stats.multicast = adapter->stats.mprc;
+}
+
+static void igbvf_print_link_info(struct igbvf_adapter *adapter)
+{
+	dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s\n",
+	         adapter->link_speed,
+	         ((adapter->link_duplex == FULL_DUPLEX) ?
+	          "Full Duplex" : "Half Duplex"));
+}
+
+static bool igbvf_has_link(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	s32 ret_val = E1000_SUCCESS;
+	bool link_active;
+
+	ret_val = hw->mac.ops.check_for_link(hw);
+	link_active = !hw->mac.get_link_status;
+
+	/* if check for link returns error we will need to reset */
+	if (ret_val)
+		schedule_work(&adapter->reset_task);
+
+	return link_active;
+}
+
+/**
+ * igbvf_watchdog - Timer Call-back
+ * @data: pointer to adapter cast into an unsigned long
+ **/
+static void igbvf_watchdog(unsigned long data)
+{
+	struct igbvf_adapter *adapter = (struct igbvf_adapter *) data;
+
+	/* Do the rest outside of interrupt context */
+	schedule_work(&adapter->watchdog_task);
+}
+
+static void igbvf_watchdog_task(struct work_struct *work)
+{
+	struct igbvf_adapter *adapter = container_of(work,
+	                                             struct igbvf_adapter,
+	                                             watchdog_task);
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 link;
+	int tx_pending = 0;
+
+	link = igbvf_has_link(adapter);
+
+	if (link) {
+		if (!netif_carrier_ok(netdev)) {
+			bool txb2b = 1;
+
+			mac->ops.get_link_up_info(&adapter->hw,
+			                          &adapter->link_speed,
+			                          &adapter->link_duplex);
+			igbvf_print_link_info(adapter);
+
+			/*
+			 * tweak tx_queue_len according to speed/duplex
+			 * and adjust the timeout factor
+			 */
+			netdev->tx_queue_len = adapter->tx_queue_len;
+			adapter->tx_timeout_factor = 1;
+			switch (adapter->link_speed) {
+			case SPEED_10:
+				txb2b = 0;
+				netdev->tx_queue_len = 10;
+				adapter->tx_timeout_factor = 16;
+				break;
+			case SPEED_100:
+				txb2b = 0;
+				netdev->tx_queue_len = 100;
+				/* maybe add some timeout factor ? */
+				break;
+			}
+
+			netif_carrier_on(netdev);
+			netif_wake_queue(netdev);
+		}
+	} else {
+		if (netif_carrier_ok(netdev)) {
+			adapter->link_speed = 0;
+			adapter->link_duplex = 0;
+			dev_info(&adapter->pdev->dev, "Link is Down\n");
+			netif_carrier_off(netdev);
+			netif_stop_queue(netdev);
+		}
+	}
+
+	if (netif_carrier_ok(netdev)) {
+		igbvf_update_stats(adapter);
+	} else {
+		tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
+		              tx_ring->count);
+		if (tx_pending) {
+			/*
+			 * We've lost link, so the controller stops DMA,
+			 * but we've got queued Tx work that's never going
+			 * to get done, so reset controller to flush Tx.
+			 * (Do the reset outside of interrupt context).
+			 */
+			adapter->tx_timeout_count++;
+			schedule_work(&adapter->reset_task);
+		}
+	}
+
+	/* Cause software interrupt to ensure Rx ring is cleaned */
+	ew32(EICS, adapter->rx_ring->eims_value);
+
+	/* Force detection of hung controller every watchdog period */
+	adapter->detect_tx_hung = 1;
+
+	/* Reset the timer */
+	if (!test_bit(__IGBVF_DOWN, &adapter->state))
+		mod_timer(&adapter->watchdog_timer,
+			  round_jiffies(jiffies + (2 * HZ)));
+}
+
+#define IGBVF_TX_FLAGS_CSUM             0x00000001
+#define IGBVF_TX_FLAGS_VLAN             0x00000002
+#define IGBVF_TX_FLAGS_TSO              0x00000004
+#define IGBVF_TX_FLAGS_IPV4             0x00000008
+#define IGBVF_TX_FLAGS_VLAN_MASK        0xffff0000
+#define IGBVF_TX_FLAGS_VLAN_SHIFT       16
+
+static int igbvf_tso(struct igbvf_adapter *adapter,
+                     struct igbvf_ring *tx_ring,
+                     struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
+{
+	struct e1000_adv_tx_context_desc *context_desc;
+	unsigned int i;
+	int err;
+	struct igbvf_buffer *buffer_info;
+	u32 info = 0, tu_cmd = 0;
+	u32 mss_l4len_idx, l4len;
+	*hdr_len = 0;
+
+	if (skb_header_cloned(skb)) {
+		err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (err) {
+			dev_err(&adapter->pdev->dev,
+			        "igbvf_tso returning an error\n");
+			return err;
+		}
+	}
+
+	l4len = tcp_hdrlen(skb);
+	*hdr_len += l4len;
+
+	if (skb->protocol == htons(ETH_P_IP)) {
+		struct iphdr *iph = ip_hdr(skb);
+		iph->tot_len = 0;
+		iph->check = 0;
+		tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+		                                         iph->daddr, 0,
+		                                         IPPROTO_TCP,
+		                                         0);
+	} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+		ipv6_hdr(skb)->payload_len = 0;
+		tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+		                                       &ipv6_hdr(skb)->daddr,
+		                                       0, IPPROTO_TCP, 0);
+	}
+
+	i = tx_ring->next_to_use;
+
+	buffer_info = &tx_ring->buffer_info[i];
+	context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
+	/* VLAN MACLEN IPLEN */
+	if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+		info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
+	info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+	*hdr_len += skb_network_offset(skb);
+	info |= (skb_transport_header(skb) - skb_network_header(skb));
+	*hdr_len += (skb_transport_header(skb) - skb_network_header(skb));
+	context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+	/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
+	tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+	if (skb->protocol == htons(ETH_P_IP))
+		tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+	tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+
+	context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+
+	/* MSS L4LEN IDX */
+	mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
+	mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
+
+	context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
+	context_desc->seqnum_seed = 0;
+
+	buffer_info->time_stamp = jiffies;
+	buffer_info->next_to_watch = i;
+	buffer_info->dma = 0;
+	i++;
+	if (i == tx_ring->count)
+		i = 0;
+
+	tx_ring->next_to_use = i;
+
+	return true;
+}
+
+static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter,
+                                 struct igbvf_ring *tx_ring,
+                                 struct sk_buff *skb, u32 tx_flags)
+{
+	struct e1000_adv_tx_context_desc *context_desc;
+	unsigned int i;
+	struct igbvf_buffer *buffer_info;
+	u32 info = 0, tu_cmd = 0;
+
+	if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
+	    (tx_flags & IGBVF_TX_FLAGS_VLAN)) {
+		i = tx_ring->next_to_use;
+		buffer_info = &tx_ring->buffer_info[i];
+		context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
+
+		if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+			info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
+
+		info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+		if (skb->ip_summed == CHECKSUM_PARTIAL)
+			info |= (skb_transport_header(skb) -
+			         skb_network_header(skb));
+
+
+		context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+		tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			switch (skb->protocol) {
+			case __constant_htons(ETH_P_IP):
+				tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+				if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				break;
+			case __constant_htons(ETH_P_IPV6):
+				if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				break;
+			default:
+				break;
+			}
+		}
+
+		context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+		context_desc->seqnum_seed = 0;
+		context_desc->mss_l4len_idx = 0;
+
+		buffer_info->time_stamp = jiffies;
+		buffer_info->next_to_watch = i;
+		buffer_info->dma = 0;
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+		tx_ring->next_to_use = i;
+
+		return true;
+	}
+
+	return false;
+}
+
+static int igbvf_maybe_stop_tx(struct net_device *netdev, int size)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	/* there is enough descriptors then we don't need to worry  */
+	if (igbvf_desc_unused(adapter->tx_ring) >= size)
+		return 0;
+
+	netif_stop_queue(netdev);
+
+	smp_mb();
+
+	/* We need to check again just in case room has been made available */
+	if (igbvf_desc_unused(adapter->tx_ring) < size)
+		return -EBUSY;
+
+	netif_wake_queue(netdev);
+
+	++adapter->restart_queue;
+	return 0;
+}
+
+#define IGBVF_MAX_TXD_PWR       16
+#define IGBVF_MAX_DATA_PER_TXD  (1 << IGBVF_MAX_TXD_PWR)
+
+static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
+                                   struct igbvf_ring *tx_ring,
+                                   struct sk_buff *skb,
+                                   unsigned int first)
+{
+	struct igbvf_buffer *buffer_info;
+	unsigned int len = skb_headlen(skb);
+	unsigned int count = 0, i;
+	unsigned int f;
+	dma_addr_t *map;
+
+	i = tx_ring->next_to_use;
+
+	if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
+		dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
+		return 0;
+	}
+
+	map = skb_shinfo(skb)->dma_maps;
+
+	buffer_info = &tx_ring->buffer_info[i];
+	BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
+	buffer_info->length = len;
+	/* set time_stamp *before* dma to help avoid a possible race */
+	buffer_info->time_stamp = jiffies;
+	buffer_info->next_to_watch = i;
+	buffer_info->dma = map[count];
+	count++;
+
+	for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
+		struct skb_frag_struct *frag;
+
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+
+		frag = &skb_shinfo(skb)->frags[f];
+		len = frag->size;
+
+		buffer_info = &tx_ring->buffer_info[i];
+		BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
+		buffer_info->length = len;
+		buffer_info->time_stamp = jiffies;
+		buffer_info->next_to_watch = i;
+		buffer_info->dma = map[count];
+		count++;
+	}
+
+	tx_ring->buffer_info[i].skb = skb;
+	tx_ring->buffer_info[first].next_to_watch = i;
+
+	return count;
+}
+
+static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
+                                      struct igbvf_ring *tx_ring,
+                                      int tx_flags, int count, u32 paylen,
+                                      u8 hdr_len)
+{
+	union e1000_adv_tx_desc *tx_desc = NULL;
+	struct igbvf_buffer *buffer_info;
+	u32 olinfo_status = 0, cmd_type_len;
+	unsigned int i;
+
+	cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
+	                E1000_ADVTXD_DCMD_DEXT);
+
+	if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+		cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
+
+	if (tx_flags & IGBVF_TX_FLAGS_TSO) {
+		cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
+
+		/* insert tcp checksum */
+		olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+
+		/* insert ip checksum */
+		if (tx_flags & IGBVF_TX_FLAGS_IPV4)
+			olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
+
+	} else if (tx_flags & IGBVF_TX_FLAGS_CSUM) {
+		olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+	}
+
+	olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
+
+	i = tx_ring->next_to_use;
+	while (count--) {
+		buffer_info = &tx_ring->buffer_info[i];
+		tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
+		tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
+		tx_desc->read.cmd_type_len =
+		         cpu_to_le32(cmd_type_len | buffer_info->length);
+		tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+	}
+
+	tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
+	/* Force memory writes to complete before letting h/w
+	 * know there are new descriptors to fetch.  (Only
+	 * applicable for weak-ordered memory model archs,
+	 * such as IA-64). */
+	wmb();
+
+	tx_ring->next_to_use = i;
+	writel(i, adapter->hw.hw_addr + tx_ring->tail);
+	/* we need this if more than one processor can write to our tail
+	 * at a time, it syncronizes IO on IA64/Altix systems */
+	mmiowb();
+}
+
+static int igbvf_xmit_frame_ring_adv(struct sk_buff *skb,
+                                   struct net_device *netdev,
+                                   struct igbvf_ring *tx_ring)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	unsigned int first, tx_flags = 0;
+	u8 hdr_len = 0;
+	int count = 0;
+	int tso = 0;
+
+	if (test_bit(__IGBVF_DOWN, &adapter->state)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (skb->len <= 0) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	/*
+	 * need: count + 4 desc gap to keep tail from touching
+         *       + 2 desc gap to keep tail from touching head,
+         *       + 1 desc for skb->data,
+         *       + 1 desc for context descriptor,
+	 * head, otherwise try next time
+	 */
+	if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) {
+		/* this is a hard error */
+		return NETDEV_TX_BUSY;
+	}
+
+	if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+		tx_flags |= IGBVF_TX_FLAGS_VLAN;
+		tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT);
+	}
+
+	if (skb->protocol == htons(ETH_P_IP))
+		tx_flags |= IGBVF_TX_FLAGS_IPV4;
+
+	first = tx_ring->next_to_use;
+
+	tso = skb_is_gso(skb) ?
+		igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0;
+	if (unlikely(tso < 0)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (tso)
+		tx_flags |= IGBVF_TX_FLAGS_TSO;
+	else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
+	         (skb->ip_summed == CHECKSUM_PARTIAL))
+		tx_flags |= IGBVF_TX_FLAGS_CSUM;
+
+	/*
+	 * count reflects descriptors mapped, if 0 then mapping error
+	 * has occured and we need to rewind the descriptor queue
+	 */
+	count = igbvf_tx_map_adv(adapter, tx_ring, skb, first);
+
+	if (count) {
+		igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
+		                   skb->len, hdr_len);
+		netdev->trans_start = jiffies;
+		/* Make sure there is space in the ring for the next send. */
+		igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4);
+	} else {
+		dev_kfree_skb_any(skb);
+		tx_ring->buffer_info[first].time_stamp = 0;
+		tx_ring->next_to_use = first;
+	}
+
+	return NETDEV_TX_OK;
+}
+
+static int igbvf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct igbvf_ring *tx_ring;
+	int retval;
+
+	if (test_bit(__IGBVF_DOWN, &adapter->state)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	tx_ring = &adapter->tx_ring[0];
+
+	retval = igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
+
+	return retval;
+}
+
+/**
+ * igbvf_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void igbvf_tx_timeout(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	/* Do the reset outside of interrupt context */
+	adapter->tx_timeout_count++;
+	schedule_work(&adapter->reset_task);
+}
+
+static void igbvf_reset_task(struct work_struct *work)
+{
+	struct igbvf_adapter *adapter;
+	adapter = container_of(work, struct igbvf_adapter, reset_task);
+
+	igbvf_reinit_locked(adapter);
+}
+
+/**
+ * igbvf_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ *
+ * Returns the address of the device statistics structure.
+ * The statistics are actually updated from the timer callback.
+ **/
+static struct net_device_stats *igbvf_get_stats(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	/* only return the current stats */
+	return &adapter->net_stats;
+}
+
+/**
+ * igbvf_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igbvf_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+
+	if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
+		dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
+		return -EINVAL;
+	}
+
+	/* Jumbo frame size limits */
+	if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
+		if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
+			dev_err(&adapter->pdev->dev,
+			        "Jumbo Frames not supported.\n");
+			return -EINVAL;
+		}
+	}
+
+#define MAX_STD_JUMBO_FRAME_SIZE 9234
+	if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
+		dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
+		return -EINVAL;
+	}
+
+	while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+		msleep(1);
+	/* igbvf_down has a dependency on max_frame_size */
+	adapter->max_frame_size = max_frame;
+	if (netif_running(netdev))
+		igbvf_down(adapter);
+
+	/*
+	 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
+	 * means we reserve 2 more, this pushes us to allocate from the next
+	 * larger slab size.
+	 * i.e. RXBUFFER_2048 --> size-4096 slab
+	 * However with the new *_jumbo_rx* routines, jumbo receives will use
+	 * fragmented skbs
+	 */
+
+	if (max_frame <= 1024)
+		adapter->rx_buffer_len = 1024;
+	else if (max_frame <= 2048)
+		adapter->rx_buffer_len = 2048;
+	else
+#if (PAGE_SIZE / 2) > 16384
+		adapter->rx_buffer_len = 16384;
+#else
+		adapter->rx_buffer_len = PAGE_SIZE / 2;
+#endif
+
+
+	/* adjust allocation if LPE protects us, and we aren't using SBP */
+	if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
+	     (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
+		adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN +
+		                         ETH_FCS_LEN;
+
+	dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
+	         netdev->mtu, new_mtu);
+	netdev->mtu = new_mtu;
+
+	if (netif_running(netdev))
+		igbvf_up(adapter);
+	else
+		igbvf_reset(adapter);
+
+	clear_bit(__IGBVF_RESETTING, &adapter->state);
+
+	return 0;
+}
+
+static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+#ifdef CONFIG_PM
+	int retval = 0;
+#endif
+
+	netif_device_detach(netdev);
+
+	if (netif_running(netdev)) {
+		WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
+		igbvf_down(adapter);
+		igbvf_free_irq(adapter);
+	}
+
+#ifdef CONFIG_PM
+	retval = pci_save_state(pdev);
+	if (retval)
+		return retval;
+#endif
+
+	pci_disable_device(pdev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int igbvf_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	u32 err;
+
+	pci_restore_state(pdev);
+	err = pci_enable_device_mem(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
+		return err;
+	}
+
+	pci_set_master(pdev);
+
+	if (netif_running(netdev)) {
+		err = igbvf_request_irq(adapter);
+		if (err)
+			return err;
+	}
+
+	igbvf_reset(adapter);
+
+	if (netif_running(netdev))
+		igbvf_up(adapter);
+
+	netif_device_attach(netdev);
+
+	return 0;
+}
+#endif
+
+static void igbvf_shutdown(struct pci_dev *pdev)
+{
+	igbvf_suspend(pdev, PMSG_SUSPEND);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void igbvf_netpoll(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	disable_irq(adapter->pdev->irq);
+
+	igbvf_clean_tx_irq(adapter->tx_ring);
+
+	enable_irq(adapter->pdev->irq);
+}
+#endif
+
+/**
+ * igbvf_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev,
+                                                pci_channel_state_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	netif_device_detach(netdev);
+
+	if (netif_running(netdev))
+		igbvf_down(adapter);
+	pci_disable_device(pdev);
+
+	/* Request a slot slot reset. */
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * igbvf_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the igbvf_resume routine.
+ */
+static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (pci_enable_device_mem(pdev)) {
+		dev_err(&pdev->dev,
+			"Cannot re-enable PCI device after reset.\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+	pci_set_master(pdev);
+
+	igbvf_reset(adapter);
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * igbvf_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the igbvf_resume routine.
+ */
+static void igbvf_io_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (netif_running(netdev)) {
+		if (igbvf_up(adapter)) {
+			dev_err(&pdev->dev,
+				"can't bring device back up after reset\n");
+			return;
+		}
+	}
+
+	netif_device_attach(netdev);
+}
+
+static void igbvf_print_device_info(struct igbvf_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+
+	dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n");
+	dev_info(&pdev->dev, "Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+	         /* MAC address */
+	         netdev->dev_addr[0], netdev->dev_addr[1],
+	         netdev->dev_addr[2], netdev->dev_addr[3],
+	         netdev->dev_addr[4], netdev->dev_addr[5]);
+	dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type);
+}
+
+static const struct net_device_ops igbvf_netdev_ops = {
+	.ndo_open                       = igbvf_open,
+	.ndo_stop                       = igbvf_close,
+	.ndo_start_xmit                 = igbvf_xmit_frame,
+	.ndo_get_stats                  = igbvf_get_stats,
+	.ndo_set_multicast_list         = igbvf_set_multi,
+	.ndo_set_mac_address            = igbvf_set_mac,
+	.ndo_change_mtu                 = igbvf_change_mtu,
+	.ndo_do_ioctl                   = igbvf_ioctl,
+	.ndo_tx_timeout                 = igbvf_tx_timeout,
+	.ndo_vlan_rx_register           = igbvf_vlan_rx_register,
+	.ndo_vlan_rx_add_vid            = igbvf_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid           = igbvf_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller            = igbvf_netpoll,
+#endif
+};
+
+/**
+ * igbvf_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in igbvf_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * igbvf_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int __devinit igbvf_probe(struct pci_dev *pdev,
+                                 const struct pci_device_id *ent)
+{
+	struct net_device *netdev;
+	struct igbvf_adapter *adapter;
+	struct e1000_hw *hw;
+	const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data];
+
+	static int cards_found;
+	int err, pci_using_dac;
+
+	err = pci_enable_device_mem(pdev);
+	if (err)
+		return err;
+
+	pci_using_dac = 0;
+	err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+	if (!err) {
+		err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+		if (!err)
+			pci_using_dac = 1;
+	} else {
+		err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+		if (err) {
+			err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+			if (err) {
+				dev_err(&pdev->dev, "No usable DMA "
+				        "configuration, aborting\n");
+				goto err_dma;
+			}
+		}
+	}
+
+	err = pci_request_regions(pdev, igbvf_driver_name);
+	if (err)
+		goto err_pci_reg;
+
+	pci_set_master(pdev);
+
+	err = -ENOMEM;
+	netdev = alloc_etherdev(sizeof(struct igbvf_adapter));
+	if (!netdev)
+		goto err_alloc_etherdev;
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	pci_set_drvdata(pdev, netdev);
+	adapter = netdev_priv(netdev);
+	hw = &adapter->hw;
+	adapter->netdev = netdev;
+	adapter->pdev = pdev;
+	adapter->ei = ei;
+	adapter->pba = ei->pba;
+	adapter->flags = ei->flags;
+	adapter->hw.back = adapter;
+	adapter->hw.mac.type = ei->mac;
+	adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
+
+	/* PCI config space info */
+
+	hw->vendor_id = pdev->vendor;
+	hw->device_id = pdev->device;
+	hw->subsystem_vendor_id = pdev->subsystem_vendor;
+	hw->subsystem_device_id = pdev->subsystem_device;
+
+	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
+
+	err = -EIO;
+	adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0),
+	                              pci_resource_len(pdev, 0));
+
+	if (!adapter->hw.hw_addr)
+		goto err_ioremap;
+
+	if (ei->get_variants) {
+		err = ei->get_variants(adapter);
+		if (err)
+			goto err_ioremap;
+	}
+
+	/* setup adapter struct */
+	err = igbvf_sw_init(adapter);
+	if (err)
+		goto err_sw_init;
+
+	/* construct the net_device struct */
+	netdev->netdev_ops = &igbvf_netdev_ops;
+
+	igbvf_set_ethtool_ops(netdev);
+	netdev->watchdog_timeo = 5 * HZ;
+	strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+	adapter->bd_number = cards_found++;
+
+	netdev->features = NETIF_F_SG |
+	                   NETIF_F_IP_CSUM |
+	                   NETIF_F_HW_VLAN_TX |
+	                   NETIF_F_HW_VLAN_RX |
+	                   NETIF_F_HW_VLAN_FILTER;
+
+	netdev->features |= NETIF_F_IPV6_CSUM;
+	netdev->features |= NETIF_F_TSO;
+	netdev->features |= NETIF_F_TSO6;
+
+	if (pci_using_dac)
+		netdev->features |= NETIF_F_HIGHDMA;
+
+	netdev->vlan_features |= NETIF_F_TSO;
+	netdev->vlan_features |= NETIF_F_TSO6;
+	netdev->vlan_features |= NETIF_F_IP_CSUM;
+	netdev->vlan_features |= NETIF_F_IPV6_CSUM;
+	netdev->vlan_features |= NETIF_F_SG;
+
+	/*reset the controller to put the device in a known good state */
+	err = hw->mac.ops.reset_hw(hw);
+	if (err) {
+		dev_info(&pdev->dev,
+		         "PF still in reset state, assigning new address\n");
+		random_ether_addr(hw->mac.addr);
+	} else {
+		err = hw->mac.ops.read_mac_addr(hw);
+		if (err) {
+			dev_err(&pdev->dev, "Error reading MAC address\n");
+			goto err_hw_init;
+		}
+	}
+
+	memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
+	memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
+
+	if (!is_valid_ether_addr(netdev->perm_addr)) {
+		dev_err(&pdev->dev, "Invalid MAC Address: "
+		        "%02x:%02x:%02x:%02x:%02x:%02x\n",
+		        netdev->dev_addr[0], netdev->dev_addr[1],
+		        netdev->dev_addr[2], netdev->dev_addr[3],
+		        netdev->dev_addr[4], netdev->dev_addr[5]);
+		err = -EIO;
+		goto err_hw_init;
+	}
+
+	setup_timer(&adapter->watchdog_timer, &igbvf_watchdog,
+	            (unsigned long) adapter);
+
+	INIT_WORK(&adapter->reset_task, igbvf_reset_task);
+	INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task);
+
+	/* ring size defaults */
+	adapter->rx_ring->count = 1024;
+	adapter->tx_ring->count = 1024;
+
+	/* reset the hardware with the new settings */
+	igbvf_reset(adapter);
+
+	/* tell the stack to leave us alone until igbvf_open() is called */
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+
+	strcpy(netdev->name, "eth%d");
+	err = register_netdev(netdev);
+	if (err)
+		goto err_hw_init;
+
+	igbvf_print_device_info(adapter);
+
+	igbvf_initialize_last_counter_stats(adapter);
+
+	return 0;
+
+err_hw_init:
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+err_sw_init:
+	igbvf_reset_interrupt_capability(adapter);
+	iounmap(adapter->hw.hw_addr);
+err_ioremap:
+	free_netdev(netdev);
+err_alloc_etherdev:
+	pci_release_regions(pdev);
+err_pci_reg:
+err_dma:
+	pci_disable_device(pdev);
+	return err;
+}
+
+/**
+ * igbvf_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * igbvf_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device.  The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void __devexit igbvf_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	/*
+	 * flush_scheduled work may reschedule our watchdog task, so
+	 * explicitly disable watchdog tasks from being rescheduled
+	 */
+	set_bit(__IGBVF_DOWN, &adapter->state);
+	del_timer_sync(&adapter->watchdog_timer);
+
+	flush_scheduled_work();
+
+	unregister_netdev(netdev);
+
+	igbvf_reset_interrupt_capability(adapter);
+
+	/*
+	 * it is important to delete the napi struct prior to freeing the
+	 * rx ring so that you do not end up with null pointer refs
+	 */
+	netif_napi_del(&adapter->rx_ring->napi);
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+
+	iounmap(hw->hw_addr);
+	if (hw->flash_address)
+		iounmap(hw->flash_address);
+	pci_release_regions(pdev);
+
+	free_netdev(netdev);
+
+	pci_disable_device(pdev);
+}
+
+/* PCI Error Recovery (ERS) */
+static struct pci_error_handlers igbvf_err_handler = {
+	.error_detected = igbvf_io_error_detected,
+	.slot_reset = igbvf_io_slot_reset,
+	.resume = igbvf_io_resume,
+};
+
+static struct pci_device_id igbvf_pci_tbl[] = {
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf },
+	{ } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl);
+
+/* PCI Device API Driver */
+static struct pci_driver igbvf_driver = {
+	.name     = igbvf_driver_name,
+	.id_table = igbvf_pci_tbl,
+	.probe    = igbvf_probe,
+	.remove   = __devexit_p(igbvf_remove),
+#ifdef CONFIG_PM
+	/* Power Management Hooks */
+	.suspend  = igbvf_suspend,
+	.resume   = igbvf_resume,
+#endif
+	.shutdown = igbvf_shutdown,
+	.err_handler = &igbvf_err_handler
+};
+
+/**
+ * igbvf_init_module - Driver Registration Routine
+ *
+ * igbvf_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init igbvf_init_module(void)
+{
+	int ret;
+	printk(KERN_INFO "%s - version %s\n",
+	       igbvf_driver_string, igbvf_driver_version);
+	printk(KERN_INFO "%s\n", igbvf_copyright);
+
+	ret = pci_register_driver(&igbvf_driver);
+	pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name,
+	                       PM_QOS_DEFAULT_VALUE);
+
+	return ret;
+}
+module_init(igbvf_init_module);
+
+/**
+ * igbvf_exit_module - Driver Exit Cleanup Routine
+ *
+ * igbvf_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit igbvf_exit_module(void)
+{
+	pci_unregister_driver(&igbvf_driver);
+	pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name);
+}
+module_exit(igbvf_exit_module);
+
+
+MODULE_AUTHOR("Intel Corporation, <[e-mail]>");
+MODULE_DESCRIPTION("Intel(R) 82576 Virtual Function Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+/* netdev.c */

drivers/net/igbvf/regs.h

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_REGS_H_
+#define _E1000_REGS_H_
+
+#define E1000_CTRL      0x00000 /* Device Control - RW */
+#define E1000_STATUS    0x00008 /* Device Status - RO */
+#define E1000_ITR       0x000C4 /* Interrupt Throttling Rate - RW */
+#define E1000_EICR      0x01580 /* Ext. Interrupt Cause Read - R/clr */
+#define E1000_EITR(_n)  (0x01680 + (0x4 * (_n)))
+#define E1000_EICS      0x01520 /* Ext. Interrupt Cause Set - W0 */
+#define E1000_EIMS      0x01524 /* Ext. Interrupt Mask Set/Read - RW */
+#define E1000_EIMC      0x01528 /* Ext. Interrupt Mask Clear - WO */
+#define E1000_EIAC      0x0152C /* Ext. Interrupt Auto Clear - RW */
+#define E1000_EIAM      0x01530 /* Ext. Interrupt Ack Auto Clear Mask - RW */
+#define E1000_IVAR0     0x01700 /* Interrupt Vector Allocation (array) - RW */
+#define E1000_IVAR_MISC 0x01740 /* IVAR for "other" causes - RW */
+/*
+ * Convenience macros
+ *
+ * Note: "_n" is the queue number of the register to be written to.
+ *
+ * Example usage:
+ * E1000_RDBAL_REG(current_rx_queue)
+ */
+#define E1000_RDBAL(_n)      ((_n) < 4 ? (0x02800 + ((_n) * 0x100)) : \
+                                         (0x0C000 + ((_n) * 0x40)))
+#define E1000_RDBAH(_n)      ((_n) < 4 ? (0x02804 + ((_n) * 0x100)) : \
+                                         (0x0C004 + ((_n) * 0x40)))
+#define E1000_RDLEN(_n)      ((_n) < 4 ? (0x02808 + ((_n) * 0x100)) : \
+                                         (0x0C008 + ((_n) * 0x40)))
+#define E1000_SRRCTL(_n)     ((_n) < 4 ? (0x0280C + ((_n) * 0x100)) : \
+                                         (0x0C00C + ((_n) * 0x40)))
+#define E1000_RDH(_n)        ((_n) < 4 ? (0x02810 + ((_n) * 0x100)) : \
+                                         (0x0C010 + ((_n) * 0x40)))
+#define E1000_RDT(_n)        ((_n) < 4 ? (0x02818 + ((_n) * 0x100)) : \
+                                         (0x0C018 + ((_n) * 0x40)))
+#define E1000_RXDCTL(_n)     ((_n) < 4 ? (0x02828 + ((_n) * 0x100)) : \
+                                         (0x0C028 + ((_n) * 0x40)))
+#define E1000_TDBAL(_n)      ((_n) < 4 ? (0x03800 + ((_n) * 0x100)) : \
+                                         (0x0E000 + ((_n) * 0x40)))
+#define E1000_TDBAH(_n)      ((_n) < 4 ? (0x03804 + ((_n) * 0x100)) : \
+                                         (0x0E004 + ((_n) * 0x40)))
+#define E1000_TDLEN(_n)      ((_n) < 4 ? (0x03808 + ((_n) * 0x100)) : \
+                                         (0x0E008 + ((_n) * 0x40)))
+#define E1000_TDH(_n)        ((_n) < 4 ? (0x03810 + ((_n) * 0x100)) : \
+                                         (0x0E010 + ((_n) * 0x40)))
+#define E1000_TDT(_n)        ((_n) < 4 ? (0x03818 + ((_n) * 0x100)) : \
+                                         (0x0E018 + ((_n) * 0x40)))
+#define E1000_TXDCTL(_n)     ((_n) < 4 ? (0x03828 + ((_n) * 0x100)) : \
+                                         (0x0E028 + ((_n) * 0x40)))
+#define E1000_DCA_TXCTRL(_n) (0x03814 + (_n << 8))
+#define E1000_DCA_RXCTRL(_n) (0x02814 + (_n << 8))
+#define E1000_RAL(_i)  (((_i) <= 15) ? (0x05400 + ((_i) * 8)) : \
+                                       (0x054E0 + ((_i - 16) * 8)))
+#define E1000_RAH(_i)  (((_i) <= 15) ? (0x05404 + ((_i) * 8)) : \
+                                       (0x054E4 + ((_i - 16) * 8)))
+
+/* Statistics registers */
+#define E1000_VFGPRC    0x00F10
+#define E1000_VFGORC    0x00F18
+#define E1000_VFMPRC    0x00F3C
+#define E1000_VFGPTC    0x00F14
+#define E1000_VFGOTC    0x00F34
+#define E1000_VFGOTLBC  0x00F50
+#define E1000_VFGPTLBC  0x00F44
+#define E1000_VFGORLBC  0x00F48
+#define E1000_VFGPRLBC  0x00F40
+
+/* These act per VF so an array friendly macro is used */
+#define E1000_V2PMAILBOX(_n)   (0x00C40 + (4 * (_n)))
+#define E1000_VMBMEM(_n)       (0x00800 + (64 * (_n)))
+
+/* Define macros for handling registers */
+#define er32(reg) readl(hw->hw_addr + E1000_##reg)
+#define ew32(reg, val) writel((val), hw->hw_addr +  E1000_##reg)
+#define array_er32(reg, offset) \
+	readl(hw->hw_addr + E1000_##reg + (offset << 2))
+#define array_ew32(reg, offset, val) \
+	writel((val), hw->hw_addr +  E1000_##reg + (offset << 2))
+#define e1e_flush() er32(STATUS)
+
+#endif

drivers/net/igbvf/vf.c

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+
+#include "vf.h"
+
+static s32 e1000_check_for_link_vf(struct e1000_hw *hw);
+static s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+                                     u16 *duplex);
+static s32 e1000_init_hw_vf(struct e1000_hw *hw);
+static s32 e1000_reset_hw_vf(struct e1000_hw *hw);
+
+static void e1000_update_mc_addr_list_vf(struct e1000_hw *hw, u8 *,
+                                         u32, u32, u32);
+static void e1000_rar_set_vf(struct e1000_hw *, u8 *, u32);
+static s32 e1000_read_mac_addr_vf(struct e1000_hw *);
+static s32 e1000_set_vfta_vf(struct e1000_hw *, u16, bool);
+
+/**
+ *  e1000_init_mac_params_vf - Inits MAC params
+ *  @hw: pointer to the HW structure
+ **/
+s32 e1000_init_mac_params_vf(struct e1000_hw *hw)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+
+	/* VF's have no MTA Registers - PF feature only */
+	mac->mta_reg_count = 128;
+	/* VF's have no access to RAR entries  */
+	mac->rar_entry_count = 1;
+
+	/* Function pointers */
+	/* reset */
+	mac->ops.reset_hw = e1000_reset_hw_vf;
+	/* hw initialization */
+	mac->ops.init_hw = e1000_init_hw_vf;
+	/* check for link */
+	mac->ops.check_for_link = e1000_check_for_link_vf;
+	/* link info */
+	mac->ops.get_link_up_info = e1000_get_link_up_info_vf;
+	/* multicast address update */
+	mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_vf;
+	/* set mac address */
+	mac->ops.rar_set = e1000_rar_set_vf;
+	/* read mac address */
+	mac->ops.read_mac_addr = e1000_read_mac_addr_vf;
+	/* set vlan filter table array */
+	mac->ops.set_vfta = e1000_set_vfta_vf;
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_init_function_pointers_vf - Inits function pointers
+ *  @hw: pointer to the HW structure
+ **/
+void e1000_init_function_pointers_vf(struct e1000_hw *hw)
+{
+	hw->mac.ops.init_params = e1000_init_mac_params_vf;
+	hw->mbx.ops.init_params = e1000_init_mbx_params_vf;
+}
+
+/**
+ *  e1000_get_link_up_info_vf - Gets link info.
+ *  @hw: pointer to the HW structure
+ *  @speed: pointer to 16 bit value to store link speed.
+ *  @duplex: pointer to 16 bit value to store duplex.
+ *
+ *  Since we cannot read the PHY and get accurate link info, we must rely upon
+ *  the status register's data which is often stale and inaccurate.
+ **/
+static s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+                                     u16 *duplex)
+{
+	s32 status;
+
+	status = er32(STATUS);
+	if (status & E1000_STATUS_SPEED_1000)
+		*speed = SPEED_1000;
+	else if (status & E1000_STATUS_SPEED_100)
+		*speed = SPEED_100;
+	else
+		*speed = SPEED_10;
+
+	if (status & E1000_STATUS_FD)
+		*duplex = FULL_DUPLEX;
+	else
+		*duplex = HALF_DUPLEX;
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_reset_hw_vf - Resets the HW
+ *  @hw: pointer to the HW structure
+ *
+ *  VF's provide a function level reset. This is done using bit 26 of ctrl_reg.
+ *  This is all the reset we can perform on a VF.
+ **/
+static s32 e1000_reset_hw_vf(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 timeout = E1000_VF_INIT_TIMEOUT;
+	u32 ret_val = -E1000_ERR_MAC_INIT;
+	u32 msgbuf[3];
+	u8 *addr = (u8 *)(&msgbuf[1]);
+	u32 ctrl;
+
+	/* assert vf queue/interrupt reset */
+	ctrl = er32(CTRL);
+	ew32(CTRL, ctrl | E1000_CTRL_RST);
+
+	/* we cannot initialize while the RSTI / RSTD bits are asserted */
+	while (!mbx->ops.check_for_rst(hw) && timeout) {
+		timeout--;
+		udelay(5);
+	}
+
+	if (timeout) {
+		/* mailbox timeout can now become active */
+		mbx->timeout = E1000_VF_MBX_INIT_TIMEOUT;
+
+		/* notify pf of vf reset completion */
+		msgbuf[0] = E1000_VF_RESET;
+		mbx->ops.write_posted(hw, msgbuf, 1);
+
+		msleep(10);
+
+		/* set our "perm_addr" based on info provided by PF */
+		ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+		if (!ret_val) {
+			if (msgbuf[0] == (E1000_VF_RESET | E1000_VT_MSGTYPE_ACK))
+				memcpy(hw->mac.perm_addr, addr, 6);
+			else
+				ret_val = -E1000_ERR_MAC_INIT;
+		}
+	}
+
+	return ret_val;
+}
+
+/**
+ *  e1000_init_hw_vf - Inits the HW
+ *  @hw: pointer to the HW structure
+ *
+ *  Not much to do here except clear the PF Reset indication if there is one.
+ **/
+static s32 e1000_init_hw_vf(struct e1000_hw *hw)
+{
+	/* attempt to set and restore our mac address */
+	e1000_rar_set_vf(hw, hw->mac.addr, 0);
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_hash_mc_addr_vf - Generate a multicast hash value
+ *  @hw: pointer to the HW structure
+ *  @mc_addr: pointer to a multicast address
+ *
+ *  Generates a multicast address hash value which is used to determine
+ *  the multicast filter table array address and new table value.  See
+ *  e1000_mta_set_generic()
+ **/
+static u32 e1000_hash_mc_addr_vf(struct e1000_hw *hw, u8 *mc_addr)
+{
+	u32 hash_value, hash_mask;
+	u8 bit_shift = 0;
+
+	/* Register count multiplied by bits per register */
+	hash_mask = (hw->mac.mta_reg_count * 32) - 1;
+
+	/*
+	 * The bit_shift is the number of left-shifts
+	 * where 0xFF would still fall within the hash mask.
+	 */
+	while (hash_mask >> bit_shift != 0xFF)
+		bit_shift++;
+
+	hash_value = hash_mask & (((mc_addr[4] >> (8 - bit_shift)) |
+	                          (((u16) mc_addr[5]) << bit_shift)));
+
+	return hash_value;
+}
+
+/**
+ *  e1000_update_mc_addr_list_vf - Update Multicast addresses
+ *  @hw: pointer to the HW structure
+ *  @mc_addr_list: array of multicast addresses to program
+ *  @mc_addr_count: number of multicast addresses to program
+ *  @rar_used_count: the first RAR register free to program
+ *  @rar_count: total number of supported Receive Address Registers
+ *
+ *  Updates the Receive Address Registers and Multicast Table Array.
+ *  The caller must have a packed mc_addr_list of multicast addresses.
+ *  The parameter rar_count will usually be hw->mac.rar_entry_count
+ *  unless there are workarounds that change this.
+ **/
+void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
+                                  u8 *mc_addr_list, u32 mc_addr_count,
+                                  u32 rar_used_count, u32 rar_count)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf[E1000_VFMAILBOX_SIZE];
+	u16 *hash_list = (u16 *)&msgbuf[1];
+	u32 hash_value;
+	u32 cnt, i;
+
+	/* Each entry in the list uses 1 16 bit word.  We have 30
+	 * 16 bit words available in our HW msg buffer (minus 1 for the
+	 * msg type).  That's 30 hash values if we pack 'em right.  If
+	 * there are more than 30 MC addresses to add then punt the
+	 * extras for now and then add code to handle more than 30 later.
+	 * It would be unusual for a server to request that many multi-cast
+	 * addresses except for in large enterprise network environments.
+	 */
+
+	cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
+	msgbuf[0] = E1000_VF_SET_MULTICAST;
+	msgbuf[0] |= cnt << E1000_VT_MSGINFO_SHIFT;
+
+	for (i = 0; i < cnt; i++) {
+		hash_value = e1000_hash_mc_addr_vf(hw, mc_addr_list);
+		hash_list[i] = hash_value & 0x0FFFF;
+		mc_addr_list += ETH_ADDR_LEN;
+	}
+
+	mbx->ops.write_posted(hw, msgbuf, E1000_VFMAILBOX_SIZE);
+}
+
+/**
+ *  e1000_set_vfta_vf - Set/Unset vlan filter table address
+ *  @hw: pointer to the HW structure
+ *  @vid: determines the vfta register and bit to set/unset
+ *  @set: if true then set bit, else clear bit
+ **/
+static s32 e1000_set_vfta_vf(struct e1000_hw *hw, u16 vid, bool set)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf[2];
+	s32 err;
+
+	msgbuf[0] = E1000_VF_SET_VLAN;
+	msgbuf[1] = vid;
+	/* Setting the 8 bit field MSG INFO to true indicates "add" */
+	if (set)
+		msgbuf[0] |= 1 << E1000_VT_MSGINFO_SHIFT;
+
+	mbx->ops.write_posted(hw, msgbuf, 2);
+
+	err = mbx->ops.read_posted(hw, msgbuf, 2);
+
+	/* if nacked the vlan was rejected */
+	if (!err && (msgbuf[0] == (E1000_VF_SET_VLAN | E1000_VT_MSGTYPE_NACK)))
+		err = -E1000_ERR_MAC_INIT;
+
+	return err;
+}
+
+/** e1000_rlpml_set_vf - Set the maximum receive packet length
+ *  @hw: pointer to the HW structure
+ *  @max_size: value to assign to max frame size
+ **/
+void e1000_rlpml_set_vf(struct e1000_hw *hw, u16 max_size)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf[2];
+
+	msgbuf[0] = E1000_VF_SET_LPE;
+	msgbuf[1] = max_size;
+
+	mbx->ops.write_posted(hw, msgbuf, 2);
+}
+
+/**
+ *  e1000_rar_set_vf - set device MAC address
+ *  @hw: pointer to the HW structure
+ *  @addr: pointer to the receive address
+ *  @index receive address array register
+ **/
+static void e1000_rar_set_vf(struct e1000_hw *hw, u8 * addr, u32 index)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf[3];
+	u8 *msg_addr = (u8 *)(&msgbuf[1]);
+	s32 ret_val;
+
+	memset(msgbuf, 0, 12);
+	msgbuf[0] = E1000_VF_SET_MAC_ADDR;
+	memcpy(msg_addr, addr, 6);
+	ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
+
+	if (!ret_val)
+		ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+
+	/* if nacked the address was rejected, use "perm_addr" */
+	if (!ret_val &&
+	    (msgbuf[0] == (E1000_VF_SET_MAC_ADDR | E1000_VT_MSGTYPE_NACK)))
+		e1000_read_mac_addr_vf(hw);
+}
+
+/**
+ *  e1000_read_mac_addr_vf - Read device MAC address
+ *  @hw: pointer to the HW structure
+ **/
+static s32 e1000_read_mac_addr_vf(struct e1000_hw *hw)
+{
+	int i;
+
+	for (i = 0; i < ETH_ADDR_LEN; i++)
+		hw->mac.addr[i] = hw->mac.perm_addr[i];
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_check_for_link_vf - Check for link for a virtual interface
+ *  @hw: pointer to the HW structure
+ *
+ *  Checks to see if the underlying PF is still talking to the VF and
+ *  if it is then it reports the link state to the hardware, otherwise
+ *  it reports link down and returns an error.
+ **/
+static s32 e1000_check_for_link_vf(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	struct e1000_mac_info *mac = &hw->mac;
+	s32 ret_val = E1000_SUCCESS;
+	u32 in_msg = 0;
+
+	/*
+	 * We only want to run this if there has been a rst asserted.
+	 * in this case that could mean a link change, device reset,
+	 * or a virtual function reset
+	 */
+
+	/* If we were hit with a reset drop the link */
+	if (!mbx->ops.check_for_rst(hw))
+		mac->get_link_status = true;
+
+	if (!mac->get_link_status)
+		goto out;
+
+	/* if link status is down no point in checking to see if pf is up */
+	if (!(er32(STATUS) & E1000_STATUS_LU))
+		goto out;
+
+	/* if the read failed it could just be a mailbox collision, best wait
+	 * until we are called again and don't report an error */
+	if (mbx->ops.read(hw, &in_msg, 1))
+		goto out;
+
+	/* if incoming message isn't clear to send we are waiting on response */
+	if (!(in_msg & E1000_VT_MSGTYPE_CTS)) {
+		/* message is not CTS and is NACK we must have lost CTS status */
+		if (in_msg & E1000_VT_MSGTYPE_NACK)
+			ret_val = -E1000_ERR_MAC_INIT;
+		goto out;
+	}
+
+	/* the pf is talking, if we timed out in the past we reinit */
+	if (!mbx->timeout) {
+		ret_val = -E1000_ERR_MAC_INIT;
+		goto out;
+	}
+
+	/* if we passed all the tests above then the link is up and we no
+	 * longer need to check for link */
+	mac->get_link_status = false;
+
+out:
+	return ret_val;
+}
+

drivers/net/igbvf/vf.h

···
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <[e-mail]>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_VF_H_
+#define _E1000_VF_H_
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+
+#include "regs.h"
+#include "defines.h"
+
+struct e1000_hw;
+
+#define E1000_DEV_ID_82576_VF                 0x10CA
+#define E1000_REVISION_0 0
+#define E1000_REVISION_1 1
+#define E1000_REVISION_2 2
+#define E1000_REVISION_3 3
+#define E1000_REVISION_4 4
+
+#define E1000_FUNC_0     0
+#define E1000_FUNC_1     1
+
+/*
+ * Receive Address Register Count
+ * Number of high/low register pairs in the RAR.  The RAR (Receive Address
+ * Registers) holds the directed and multicast addresses that we monitor.
+ * These entries are also used for MAC-based filtering.
+ */
+#define E1000_RAR_ENTRIES_VF      1
+
+/* Receive Descriptor - Advanced */
+union e1000_adv_rx_desc {
+	struct {
+		u64 pkt_addr;             /* Packet buffer address */
+		u64 hdr_addr;             /* Header buffer address */
+	} read;
+	struct {
+		struct {
+			union {
+				u32 data;
+				struct {
+					u16 pkt_info; /* RSS/Packet type */
+					u16 hdr_info; /* Split Header,
+					               * hdr buffer length */
+				} hs_rss;
+			} lo_dword;
+			union {
+				u32 rss;          /* RSS Hash */
+				struct {
+					u16 ip_id;    /* IP id */
+					u16 csum;     /* Packet Checksum */
+				} csum_ip;
+			} hi_dword;
+		} lower;
+		struct {
+			u32 status_error;     /* ext status/error */
+			u16 length;           /* Packet length */
+			u16 vlan;             /* VLAN tag */
+		} upper;
+	} wb;  /* writeback */
+};
+
+#define E1000_RXDADV_HDRBUFLEN_MASK      0x7FE0
+#define E1000_RXDADV_HDRBUFLEN_SHIFT     5
+
+/* Transmit Descriptor - Advanced */
+union e1000_adv_tx_desc {
+	struct {
+		u64 buffer_addr;    /* Address of descriptor's data buf */
+		u32 cmd_type_len;
+		u32 olinfo_status;
+	} read;
+	struct {
+		u64 rsvd;       /* Reserved */
+		u32 nxtseq_seed;
+		u32 status;
+	} wb;
+};
+
+/* Adv Transmit Descriptor Config Masks */
+#define E1000_ADVTXD_DTYP_CTXT    0x00200000 /* Advanced Context Descriptor */
+#define E1000_ADVTXD_DTYP_DATA    0x00300000 /* Advanced Data Descriptor */
+#define E1000_ADVTXD_DCMD_EOP     0x01000000 /* End of Packet */
+#define E1000_ADVTXD_DCMD_IFCS    0x02000000 /* Insert FCS (Ethernet CRC) */
+#define E1000_ADVTXD_DCMD_RS      0x08000000 /* Report Status */
+#define E1000_ADVTXD_DCMD_DEXT    0x20000000 /* Descriptor extension (1=Adv) */
+#define E1000_ADVTXD_DCMD_VLE     0x40000000 /* VLAN pkt enable */
+#define E1000_ADVTXD_DCMD_TSE     0x80000000 /* TCP Seg enable */
+#define E1000_ADVTXD_PAYLEN_SHIFT    14 /* Adv desc PAYLEN shift */
+
+/* Context descriptors */
+struct e1000_adv_tx_context_desc {
+	u32 vlan_macip_lens;
+	u32 seqnum_seed;
+	u32 type_tucmd_mlhl;
+	u32 mss_l4len_idx;
+};
+
+#define E1000_ADVTXD_MACLEN_SHIFT    9  /* Adv ctxt desc mac len shift */
+#define E1000_ADVTXD_TUCMD_IPV4    0x00000400  /* IP Packet Type: 1=IPv4 */
+#define E1000_ADVTXD_TUCMD_L4T_TCP 0x00000800  /* L4 Packet TYPE of TCP */
+#define E1000_ADVTXD_L4LEN_SHIFT     8  /* Adv ctxt L4LEN shift */
+#define E1000_ADVTXD_MSS_SHIFT      16  /* Adv ctxt MSS shift */
+
+enum e1000_mac_type {
+	e1000_undefined = 0,
+	e1000_vfadapt,
+	e1000_num_macs  /* List is 1-based, so subtract 1 for true count. */
+};
+
+struct e1000_vf_stats {
+	u64 base_gprc;
+	u64 base_gptc;
+	u64 base_gorc;
+	u64 base_gotc;
+	u64 base_mprc;
+	u64 base_gotlbc;
+	u64 base_gptlbc;
+	u64 base_gorlbc;
+	u64 base_gprlbc;
+
+	u32 last_gprc;
+	u32 last_gptc;
+	u32 last_gorc;
+	u32 last_gotc;
+	u32 last_mprc;
+	u32 last_gotlbc;
+	u32 last_gptlbc;
+	u32 last_gorlbc;
+	u32 last_gprlbc;
+
+	u64 gprc;
+	u64 gptc;
+	u64 gorc;
+	u64 gotc;
+	u64 mprc;
+	u64 gotlbc;
+	u64 gptlbc;
+	u64 gorlbc;
+	u64 gprlbc;
+};
+
+#include "mbx.h"
+
+struct e1000_mac_operations {
+	/* Function pointers for the MAC. */
+	s32  (*init_params)(struct e1000_hw *);
+	s32  (*check_for_link)(struct e1000_hw *);
+	void (*clear_vfta)(struct e1000_hw *);
+	s32  (*get_bus_info)(struct e1000_hw *);
+	s32  (*get_link_up_info)(struct e1000_hw *, u16 *, u16 *);
+	void (*update_mc_addr_list)(struct e1000_hw *, u8 *, u32, u32, u32);
+	s32  (*reset_hw)(struct e1000_hw *);
+	s32  (*init_hw)(struct e1000_hw *);
+	s32  (*setup_link)(struct e1000_hw *);
+	void (*write_vfta)(struct e1000_hw *, u32, u32);
+	void (*mta_set)(struct e1000_hw *, u32);
+	void (*rar_set)(struct e1000_hw *, u8*, u32);
+	s32  (*read_mac_addr)(struct e1000_hw *);
+	s32  (*set_vfta)(struct e1000_hw *, u16, bool);
+};
+
+struct e1000_mac_info {
+	struct e1000_mac_operations ops;
+	u8 addr[6];
+	u8 perm_addr[6];
+
+	enum e1000_mac_type type;
+
+	u16 mta_reg_count;
+	u16 rar_entry_count;
+
+	bool get_link_status;
+};
+
+struct e1000_mbx_operations {
+	s32 (*init_params)(struct e1000_hw *hw);
+	s32 (*read)(struct e1000_hw *, u32 *, u16);
+	s32 (*write)(struct e1000_hw *, u32 *, u16);
+	s32 (*read_posted)(struct e1000_hw *, u32 *, u16);
+	s32 (*write_posted)(struct e1000_hw *, u32 *, u16);
+	s32 (*check_for_msg)(struct e1000_hw *);
+	s32 (*check_for_ack)(struct e1000_hw *);
+	s32 (*check_for_rst)(struct e1000_hw *);
+};
+
+struct e1000_mbx_stats {
+	u32 msgs_tx;
+	u32 msgs_rx;
+
+	u32 acks;
+	u32 reqs;
+	u32 rsts;
+};
+
+struct e1000_mbx_info {
+	struct e1000_mbx_operations ops;
+	struct e1000_mbx_stats stats;
+	u32 timeout;
+	u32 usec_delay;
+	u16 size;
+};
+
+struct e1000_dev_spec_vf {
+	u32 vf_number;
+	u32 v2p_mailbox;
+};
+
+struct e1000_hw {
+	void *back;
+
+	u8 __iomem *hw_addr;
+	u8 __iomem *flash_address;
+	unsigned long io_base;
+
+	struct e1000_mac_info  mac;
+	struct e1000_mbx_info mbx;
+
+	union {
+		struct e1000_dev_spec_vf vf;
+	} dev_spec;
+
+	u16 device_id;
+	u16 subsystem_vendor_id;
+	u16 subsystem_device_id;
+	u16 vendor_id;
+
+	u8  revision_id;
+};
+
+/* These functions must be implemented by drivers */
+void e1000_rlpml_set_vf(struct e1000_hw *, u16);
+void e1000_init_function_pointers_vf(struct e1000_hw *hw);
+s32  e1000_init_mac_params_vf(struct e1000_hw *hw);
+
+
+#endif /* _E1000_VF_H_ */

drivers/net/mv643xx_eth.c

···
 		pscr |= FORCE_LINK_PASS;
 	wrlp(mp, PORT_SERIAL_CONTROL, pscr);
 
-	wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
-
 	/*
 	 * Configure TX path and queues.
 	 */
···
 		wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
 
 	netif_carrier_off(dev);
+
+	wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
 
 	set_rx_coal(mp, 250);
 	set_tx_coal(mp, 0);

drivers/net/niu.c

···
 {
 	u64 val = 0;
 
+	*ret = 0;
 	switch (rp->rbr_block_size) {
 	case 4 * 1024:
 		val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
···
 
 	plat_dev = platform_device_register_simple("niu", niu_parent_index,
 						   NULL, 0);
-	if (!plat_dev)
+	if (IS_ERR(plat_dev))
 		return NULL;
 
 	for (i = 0; attr_name(niu_parent_attributes[i]); i++) {

drivers/net/r6040.c

···
 	"Florian Fainelli <[e-mail]>");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
+MODULE_VERSION(DRV_VERSION " " DRV_RELDATE);
 
 /* RX and TX interrupts that we handle */
 #define RX_INTS			(RX_FIFO_FULL | RX_NO_DESC | RX_FINISH)

drivers/net/smsc911x.c

···
 			goto out;
 		}
 
-	SMSC_WARNING(HW, "Timed out waiting for MII write to finish");
+	SMSC_WARNING(HW, "Timed out waiting for MII read to finish");
 	reg = -EIO;
 
 out:

include/net/netfilter/nf_conntrack_expect.h

···
 		       const union nf_inet_addr *,
 		       u_int8_t, const __be16 *, const __be16 *);
 void nf_ct_expect_put(struct nf_conntrack_expect *exp);
-int nf_ct_expect_related(struct nf_conntrack_expect *expect);
 int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, 
 				u32 pid, int report);
+static inline int nf_ct_expect_related(struct nf_conntrack_expect *expect)
+{
+	return nf_ct_expect_related_report(expect, 0, 0);
+}
 
 #endif /*_NF_CONNTRACK_EXPECT_H*/
 

net/ipv6/netfilter/ip6_tables.c

···
 
 	xt_free_table_info(info);
 
+	return counters;
+
  free_counters:
 	vfree(counters);
  nomem:

net/netfilter/Kconfig

···
 
 config NETFILTER_XT_TARGET_LED
 	tristate '"LED" target support'
-	depends on LEDS_CLASS && LED_TRIGGERS
+	depends on LEDS_CLASS && LEDS_TRIGGERS
 	depends on NETFILTER_ADVANCED
 	help
 	  This option adds a `LED' target, which allows you to blink LEDs in

net/netfilter/nf_conntrack_expect.c

···
 	struct net *net = nf_ct_exp_net(expect);
 	struct hlist_node *n;
 	unsigned int h;
-	int ret = 0;
+	int ret = 1;
 
 	if (!master_help->helper) {
 		ret = -ESHUTDOWN;
···
 	return ret;
 }
 
-int nf_ct_expect_related(struct nf_conntrack_expect *expect)
-{
-	int ret;
-
-	spin_lock_bh(&nf_conntrack_lock);
-	ret = __nf_ct_expect_check(expect);
-	if (ret < 0)
-		goto out;
-
-	nf_ct_expect_insert(expect);
-	atomic_inc(&expect->use);
-	spin_unlock_bh(&nf_conntrack_lock);
-	nf_ct_expect_event(IPEXP_NEW, expect);
-	nf_ct_expect_put(expect);
-	return ret;
-out:
-	spin_unlock_bh(&nf_conntrack_lock);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(nf_ct_expect_related);
-
 int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, 
 				u32 pid, int report)
 {
···
 
 	spin_lock_bh(&nf_conntrack_lock);
 	ret = __nf_ct_expect_check(expect);
-	if (ret < 0)
+	if (ret <= 0)
 		goto out;
+
+	ret = 0;
 	nf_ct_expect_insert(expect);
+	spin_unlock_bh(&nf_conntrack_lock);
+	nf_ct_expect_event_report(IPEXP_NEW, expect, pid, report);
+	return ret;
 out:
 	spin_unlock_bh(&nf_conntrack_lock);
-	if (ret == 0)
-		nf_ct_expect_event_report(IPEXP_NEW, expect, pid, report);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(nf_ct_expect_related_report);