Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3971 insertions, 0 deletions

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
new file mode 100644
index 000000000..3b889fed9
--- /dev/null
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -0,0 +1,3971 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2020, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. 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".
+ *
+ * Maintained by: pv-drivers@vmware.com
+ *
+ */
+
+#include <linux/module.h>
+#include <net/ip6_checksum.h>
+
+#include "vmxnet3_int.h"
+
+char vmxnet3_driver_name[] = "vmxnet3";
+#define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver"
+
+/*
+ * PCI Device ID Table
+ * Last entry must be all 0s
+ */
+static const struct pci_device_id vmxnet3_pciid_table[] = {
+	{PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
+	{0}
+};
+
+MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
+
+static int enable_mq = 1;
+
+static void
+vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac);
+
+/*
+ *    Enable/Disable the given intr
+ */
+static void
+vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
+{
+	VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
+}
+
+
+static void
+vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
+{
+	VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
+}
+
+
+/*
+ *    Enable/Disable all intrs used by the device
+ */
+static void
+vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->intr.num_intrs; i++)
+		vmxnet3_enable_intr(adapter, i);
+	adapter->shared->devRead.intrConf.intrCtrl &=
+					cpu_to_le32(~VMXNET3_IC_DISABLE_ALL);
+}
+
+
+static void
+vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	adapter->shared->devRead.intrConf.intrCtrl |=
+					cpu_to_le32(VMXNET3_IC_DISABLE_ALL);
+	for (i = 0; i < adapter->intr.num_intrs; i++)
+		vmxnet3_disable_intr(adapter, i);
+}
+
+
+static void
+vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events)
+{
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
+}
+
+
+static bool
+vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+	return tq->stopped;
+}
+
+
+static void
+vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+	tq->stopped = false;
+	netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue);
+}
+
+
+static void
+vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+	tq->stopped = false;
+	netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue));
+}
+
+
+static void
+vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+	tq->stopped = true;
+	tq->num_stop++;
+	netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue));
+}
+
+
+/*
+ * Check the link state. This may start or stop the tx queue.
+ */
+static void
+vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue)
+{
+	u32 ret;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
+	ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+	adapter->link_speed = ret >> 16;
+	if (ret & 1) { /* Link is up. */
+		netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n",
+			    adapter->link_speed);
+		netif_carrier_on(adapter->netdev);
+
+		if (affectTxQueue) {
+			for (i = 0; i < adapter->num_tx_queues; i++)
+				vmxnet3_tq_start(&adapter->tx_queue[i],
+						 adapter);
+		}
+	} else {
+		netdev_info(adapter->netdev, "NIC Link is Down\n");
+		netif_carrier_off(adapter->netdev);
+
+		if (affectTxQueue) {
+			for (i = 0; i < adapter->num_tx_queues; i++)
+				vmxnet3_tq_stop(&adapter->tx_queue[i], adapter);
+		}
+	}
+}
+
+static void
+vmxnet3_process_events(struct vmxnet3_adapter *adapter)
+{
+	int i;
+	unsigned long flags;
+	u32 events = le32_to_cpu(adapter->shared->ecr);
+	if (!events)
+		return;
+
+	vmxnet3_ack_events(adapter, events);
+
+	/* Check if link state has changed */
+	if (events & VMXNET3_ECR_LINK)
+		vmxnet3_check_link(adapter, true);
+
+	/* Check if there is an error on xmit/recv queues */
+	if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
+		spin_lock_irqsave(&adapter->cmd_lock, flags);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_GET_QUEUE_STATUS);
+		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+		for (i = 0; i < adapter->num_tx_queues; i++)
+			if (adapter->tqd_start[i].status.stopped)
+				dev_err(&adapter->netdev->dev,
+					"%s: tq[%d] error 0x%x\n",
+					adapter->netdev->name, i, le32_to_cpu(
+					adapter->tqd_start[i].status.error));
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			if (adapter->rqd_start[i].status.stopped)
+				dev_err(&adapter->netdev->dev,
+					"%s: rq[%d] error 0x%x\n",
+					adapter->netdev->name, i,
+					adapter->rqd_start[i].status.error);
+
+		schedule_work(&adapter->work);
+	}
+}
+
+#ifdef __BIG_ENDIAN_BITFIELD
+/*
+ * The device expects the bitfields in shared structures to be written in
+ * little endian. When CPU is big endian, the following routines are used to
+ * correctly read and write into ABI.
+ * The general technique used here is : double word bitfields are defined in
+ * opposite order for big endian architecture. Then before reading them in
+ * driver the complete double word is translated using le32_to_cpu. Similarly
+ * After the driver writes into bitfields, cpu_to_le32 is used to translate the
+ * double words into required format.
+ * In order to avoid touching bits in shared structure more than once, temporary
+ * descriptors are used. These are passed as srcDesc to following functions.
+ */
+static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc,
+				struct Vmxnet3_RxDesc *dstDesc)
+{
+	u32 *src = (u32 *)srcDesc + 2;
+	u32 *dst = (u32 *)dstDesc + 2;
+	dstDesc->addr = le64_to_cpu(srcDesc->addr);
+	*dst = le32_to_cpu(*src);
+	dstDesc->ext1 = le32_to_cpu(srcDesc->ext1);
+}
+
+static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc,
+			       struct Vmxnet3_TxDesc *dstDesc)
+{
+	int i;
+	u32 *src = (u32 *)(srcDesc + 1);
+	u32 *dst = (u32 *)(dstDesc + 1);
+
+	/* Working backwards so that the gen bit is set at the end. */
+	for (i = 2; i > 0; i--) {
+		src--;
+		dst--;
+		*dst = cpu_to_le32(*src);
+	}
+}
+
+
+static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc,
+				struct Vmxnet3_RxCompDesc *dstDesc)
+{
+	int i = 0;
+	u32 *src = (u32 *)srcDesc;
+	u32 *dst = (u32 *)dstDesc;
+	for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) {
+		*dst = le32_to_cpu(*src);
+		src++;
+		dst++;
+	}
+}
+
+
+/* Used to read bitfield values from double words. */
+static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size)
+{
+	u32 temp = le32_to_cpu(*bitfield);
+	u32 mask = ((1 << size) - 1) << pos;
+	temp &= mask;
+	temp >>= pos;
+	return temp;
+}
+
+
+
+#endif  /* __BIG_ENDIAN_BITFIELD */
+
+#ifdef __BIG_ENDIAN_BITFIELD
+
+#   define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \
+			txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \
+			VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE)
+#   define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \
+			txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \
+			VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE)
+#   define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \
+			VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \
+			VMXNET3_TCD_GEN_SIZE)
+#   define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \
+			VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE)
+#   define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \
+			(dstrcd) = (tmp); \
+			vmxnet3_RxCompToCPU((rcd), (tmp)); \
+		} while (0)
+#   define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \
+			(dstrxd) = (tmp); \
+			vmxnet3_RxDescToCPU((rxd), (tmp)); \
+		} while (0)
+
+#else
+
+#   define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen)
+#   define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop)
+#   define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen)
+#   define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx)
+#   define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd)
+#   define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd)
+
+#endif /* __BIG_ENDIAN_BITFIELD  */
+
+
+static void
+vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
+		     struct pci_dev *pdev)
+{
+	if (tbi->map_type == VMXNET3_MAP_SINGLE)
+		dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len,
+				 PCI_DMA_TODEVICE);
+	else if (tbi->map_type == VMXNET3_MAP_PAGE)
+		dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len,
+			       PCI_DMA_TODEVICE);
+	else
+		BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
+
+	tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
+}
+
+
+static int
+vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq,
+		  struct pci_dev *pdev,	struct vmxnet3_adapter *adapter)
+{
+	struct sk_buff *skb;
+	int entries = 0;
+
+	/* no out of order completion */
+	BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp);
+	BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1);
+
+	skb = tq->buf_info[eop_idx].skb;
+	BUG_ON(skb == NULL);
+	tq->buf_info[eop_idx].skb = NULL;
+
+	VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
+
+	while (tq->tx_ring.next2comp != eop_idx) {
+		vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp,
+				     pdev);
+
+		/* update next2comp w/o tx_lock. Since we are marking more,
+		 * instead of less, tx ring entries avail, the worst case is
+		 * that the tx routine incorrectly re-queues a pkt due to
+		 * insufficient tx ring entries.
+		 */
+		vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+		entries++;
+	}
+
+	dev_kfree_skb_any(skb);
+	return entries;
+}
+
+
+static int
+vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
+			struct vmxnet3_adapter *adapter)
+{
+	int completed = 0;
+	union Vmxnet3_GenericDesc *gdesc;
+
+	gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+	while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) {
+		/* Prevent any &gdesc->tcd field from being (speculatively)
+		 * read before (&gdesc->tcd)->gen is read.
+		 */
+		dma_rmb();
+
+		completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX(
+					       &gdesc->tcd), tq, adapter->pdev,
+					       adapter);
+
+		vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
+		gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+	}
+
+	if (completed) {
+		spin_lock(&tq->tx_lock);
+		if (unlikely(vmxnet3_tq_stopped(tq, adapter) &&
+			     vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
+			     VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
+			     netif_carrier_ok(adapter->netdev))) {
+			vmxnet3_tq_wake(tq, adapter);
+		}
+		spin_unlock(&tq->tx_lock);
+	}
+	return completed;
+}
+
+
+static void
+vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
+		   struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
+		struct vmxnet3_tx_buf_info *tbi;
+
+		tbi = tq->buf_info + tq->tx_ring.next2comp;
+
+		vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
+		if (tbi->skb) {
+			dev_kfree_skb_any(tbi->skb);
+			tbi->skb = NULL;
+		}
+		vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+	}
+
+	/* sanity check, verify all buffers are indeed unmapped and freed */
+	for (i = 0; i < tq->tx_ring.size; i++) {
+		BUG_ON(tq->buf_info[i].skb != NULL ||
+		       tq->buf_info[i].map_type != VMXNET3_MAP_NONE);
+	}
+
+	tq->tx_ring.gen = VMXNET3_INIT_GEN;
+	tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+
+	tq->comp_ring.gen = VMXNET3_INIT_GEN;
+	tq->comp_ring.next2proc = 0;
+}
+
+
+static void
+vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
+		   struct vmxnet3_adapter *adapter)
+{
+	if (tq->tx_ring.base) {
+		dma_free_coherent(&adapter->pdev->dev, tq->tx_ring.size *
+				  sizeof(struct Vmxnet3_TxDesc),
+				  tq->tx_ring.base, tq->tx_ring.basePA);
+		tq->tx_ring.base = NULL;
+	}
+	if (tq->data_ring.base) {
+		dma_free_coherent(&adapter->pdev->dev,
+				  tq->data_ring.size * tq->txdata_desc_size,
+				  tq->data_ring.base, tq->data_ring.basePA);
+		tq->data_ring.base = NULL;
+	}
+	if (tq->comp_ring.base) {
+		dma_free_coherent(&adapter->pdev->dev, tq->comp_ring.size *
+				  sizeof(struct Vmxnet3_TxCompDesc),
+				  tq->comp_ring.base, tq->comp_ring.basePA);
+		tq->comp_ring.base = NULL;
+	}
+	if (tq->buf_info) {
+		dma_free_coherent(&adapter->pdev->dev,
+				  tq->tx_ring.size * sizeof(tq->buf_info[0]),
+				  tq->buf_info, tq->buf_info_pa);
+		tq->buf_info = NULL;
+	}
+}
+
+
+/* Destroy all tx queues */
+void
+vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter);
+}
+
+
+static void
+vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
+		struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	/* reset the tx ring contents to 0 and reset the tx ring states */
+	memset(tq->tx_ring.base, 0, tq->tx_ring.size *
+	       sizeof(struct Vmxnet3_TxDesc));
+	tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+	tq->tx_ring.gen = VMXNET3_INIT_GEN;
+
+	memset(tq->data_ring.base, 0,
+	       tq->data_ring.size * tq->txdata_desc_size);
+
+	/* reset the tx comp ring contents to 0 and reset comp ring states */
+	memset(tq->comp_ring.base, 0, tq->comp_ring.size *
+	       sizeof(struct Vmxnet3_TxCompDesc));
+	tq->comp_ring.next2proc = 0;
+	tq->comp_ring.gen = VMXNET3_INIT_GEN;
+
+	/* reset the bookkeeping data */
+	memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
+	for (i = 0; i < tq->tx_ring.size; i++)
+		tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
+
+	/* stats are not reset */
+}
+
+
+static int
+vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
+		  struct vmxnet3_adapter *adapter)
+{
+	size_t sz;
+
+	BUG_ON(tq->tx_ring.base || tq->data_ring.base ||
+	       tq->comp_ring.base || tq->buf_info);
+
+	tq->tx_ring.base = dma_alloc_coherent(&adapter->pdev->dev,
+			tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc),
+			&tq->tx_ring.basePA, GFP_KERNEL);
+	if (!tq->tx_ring.base) {
+		netdev_err(adapter->netdev, "failed to allocate tx ring\n");
+		goto err;
+	}
+
+	tq->data_ring.base = dma_alloc_coherent(&adapter->pdev->dev,
+			tq->data_ring.size * tq->txdata_desc_size,
+			&tq->data_ring.basePA, GFP_KERNEL);
+	if (!tq->data_ring.base) {
+		netdev_err(adapter->netdev, "failed to allocate tx data ring\n");
+		goto err;
+	}
+
+	tq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev,
+			tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc),
+			&tq->comp_ring.basePA, GFP_KERNEL);
+	if (!tq->comp_ring.base) {
+		netdev_err(adapter->netdev, "failed to allocate tx comp ring\n");
+		goto err;
+	}
+
+	sz = tq->tx_ring.size * sizeof(tq->buf_info[0]);
+	tq->buf_info = dma_alloc_coherent(&adapter->pdev->dev, sz,
+					  &tq->buf_info_pa, GFP_KERNEL);
+	if (!tq->buf_info)
+		goto err;
+
+	return 0;
+
+err:
+	vmxnet3_tq_destroy(tq, adapter);
+	return -ENOMEM;
+}
+
+static void
+vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter);
+}
+
+/*
+ *    starting from ring->next2fill, allocate rx buffers for the given ring
+ *    of the rx queue and update the rx desc. stop after @num_to_alloc buffers
+ *    are allocated or allocation fails
+ */
+
+static int
+vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
+			int num_to_alloc, struct vmxnet3_adapter *adapter)
+{
+	int num_allocated = 0;
+	struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
+	struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
+	u32 val;
+
+	while (num_allocated <= num_to_alloc) {
+		struct vmxnet3_rx_buf_info *rbi;
+		union Vmxnet3_GenericDesc *gd;
+
+		rbi = rbi_base + ring->next2fill;
+		gd = ring->base + ring->next2fill;
+
+		if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
+			if (rbi->skb == NULL) {
+				rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev,
+								       rbi->len,
+								       GFP_KERNEL);
+				if (unlikely(rbi->skb == NULL)) {
+					rq->stats.rx_buf_alloc_failure++;
+					break;
+				}
+
+				rbi->dma_addr = dma_map_single(
+						&adapter->pdev->dev,
+						rbi->skb->data, rbi->len,
+						PCI_DMA_FROMDEVICE);
+				if (dma_mapping_error(&adapter->pdev->dev,
+						      rbi->dma_addr)) {
+					dev_kfree_skb_any(rbi->skb);
+					rbi->skb = NULL;
+					rq->stats.rx_buf_alloc_failure++;
+					break;
+				}
+			} else {
+				/* rx buffer skipped by the device */
+			}
+			val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
+		} else {
+			BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE ||
+			       rbi->len  != PAGE_SIZE);
+
+			if (rbi->page == NULL) {
+				rbi->page = alloc_page(GFP_ATOMIC);
+				if (unlikely(rbi->page == NULL)) {
+					rq->stats.rx_buf_alloc_failure++;
+					break;
+				}
+				rbi->dma_addr = dma_map_page(
+						&adapter->pdev->dev,
+						rbi->page, 0, PAGE_SIZE,
+						PCI_DMA_FROMDEVICE);
+				if (dma_mapping_error(&adapter->pdev->dev,
+						      rbi->dma_addr)) {
+					put_page(rbi->page);
+					rbi->page = NULL;
+					rq->stats.rx_buf_alloc_failure++;
+					break;
+				}
+			} else {
+				/* rx buffers skipped by the device */
+			}
+			val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
+		}
+
+		gd->rxd.addr = cpu_to_le64(rbi->dma_addr);
+		gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT)
+					   | val | rbi->len);
+
+		/* Fill the last buffer but dont mark it ready, or else the
+		 * device will think that the queue is full */
+		if (num_allocated == num_to_alloc)
+			break;
+
+		gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT);
+		num_allocated++;
+		vmxnet3_cmd_ring_adv_next2fill(ring);
+	}
+
+	netdev_dbg(adapter->netdev,
+		"alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n",
+		num_allocated, ring->next2fill, ring->next2comp);
+
+	/* so that the device can distinguish a full ring and an empty ring */
+	BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp);
+
+	return num_allocated;
+}
+
+
+static void
+vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd,
+		    struct vmxnet3_rx_buf_info *rbi)
+{
+	skb_frag_t *frag = skb_shinfo(skb)->frags + skb_shinfo(skb)->nr_frags;
+
+	BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS);
+
+	__skb_frag_set_page(frag, rbi->page);
+	skb_frag_off_set(frag, 0);
+	skb_frag_size_set(frag, rcd->len);
+	skb->data_len += rcd->len;
+	skb->truesize += PAGE_SIZE;
+	skb_shinfo(skb)->nr_frags++;
+}
+
+
+static int
+vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx,
+		struct vmxnet3_tx_queue *tq, struct pci_dev *pdev,
+		struct vmxnet3_adapter *adapter)
+{
+	u32 dw2, len;
+	unsigned long buf_offset;
+	int i;
+	union Vmxnet3_GenericDesc *gdesc;
+	struct vmxnet3_tx_buf_info *tbi = NULL;
+
+	BUG_ON(ctx->copy_size > skb_headlen(skb));
+
+	/* use the previous gen bit for the SOP desc */
+	dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT;
+
+	ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill;
+	gdesc = ctx->sop_txd; /* both loops below can be skipped */
+
+	/* no need to map the buffer if headers are copied */
+	if (ctx->copy_size) {
+		ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA +
+					tq->tx_ring.next2fill *
+					tq->txdata_desc_size);
+		ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size);
+		ctx->sop_txd->dword[3] = 0;
+
+		tbi = tq->buf_info + tq->tx_ring.next2fill;
+		tbi->map_type = VMXNET3_MAP_NONE;
+
+		netdev_dbg(adapter->netdev,
+			"txd[%u]: 0x%Lx 0x%x 0x%x\n",
+			tq->tx_ring.next2fill,
+			le64_to_cpu(ctx->sop_txd->txd.addr),
+			ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]);
+		vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+
+		/* use the right gen for non-SOP desc */
+		dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+	}
+
+	/* linear part can use multiple tx desc if it's big */
+	len = skb_headlen(skb) - ctx->copy_size;
+	buf_offset = ctx->copy_size;
+	while (len) {
+		u32 buf_size;
+
+		if (len < VMXNET3_MAX_TX_BUF_SIZE) {
+			buf_size = len;
+			dw2 |= len;
+		} else {
+			buf_size = VMXNET3_MAX_TX_BUF_SIZE;
+			/* spec says that for TxDesc.len, 0 == 2^14 */
+		}
+
+		tbi = tq->buf_info + tq->tx_ring.next2fill;
+		tbi->map_type = VMXNET3_MAP_SINGLE;
+		tbi->dma_addr = dma_map_single(&adapter->pdev->dev,
+				skb->data + buf_offset, buf_size,
+				PCI_DMA_TODEVICE);
+		if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr))
+			return -EFAULT;
+
+		tbi->len = buf_size;
+
+		gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
+		BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
+
+		gdesc->txd.addr = cpu_to_le64(tbi->dma_addr);
+		gdesc->dword[2] = cpu_to_le32(dw2);
+		gdesc->dword[3] = 0;
+
+		netdev_dbg(adapter->netdev,
+			"txd[%u]: 0x%Lx 0x%x 0x%x\n",
+			tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr),
+			le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]);
+		vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+		dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+
+		len -= buf_size;
+		buf_offset += buf_size;
+	}
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+		u32 buf_size;
+
+		buf_offset = 0;
+		len = skb_frag_size(frag);
+		while (len) {
+			tbi = tq->buf_info + tq->tx_ring.next2fill;
+			if (len < VMXNET3_MAX_TX_BUF_SIZE) {
+				buf_size = len;
+				dw2 |= len;
+			} else {
+				buf_size = VMXNET3_MAX_TX_BUF_SIZE;
+				/* spec says that for TxDesc.len, 0 == 2^14 */
+			}
+			tbi->map_type = VMXNET3_MAP_PAGE;
+			tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag,
+							 buf_offset, buf_size,
+							 DMA_TO_DEVICE);
+			if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr))
+				return -EFAULT;
+
+			tbi->len = buf_size;
+
+			gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
+			BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
+
+			gdesc->txd.addr = cpu_to_le64(tbi->dma_addr);
+			gdesc->dword[2] = cpu_to_le32(dw2);
+			gdesc->dword[3] = 0;
+
+			netdev_dbg(adapter->netdev,
+				"txd[%u]: 0x%llx %u %u\n",
+				tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr),
+				le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]);
+			vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+			dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+
+			len -= buf_size;
+			buf_offset += buf_size;
+		}
+	}
+
+	ctx->eop_txd = gdesc;
+
+	/* set the last buf_info for the pkt */
+	tbi->skb = skb;
+	tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base;
+
+	return 0;
+}
+
+
+/* Init all tx queues */
+static void
+vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		vmxnet3_tq_init(&adapter->tx_queue[i], adapter);
+}
+
+
+/*
+ *    parse relevant protocol headers:
+ *      For a tso pkt, relevant headers are L2/3/4 including options
+ *      For a pkt requesting csum offloading, they are L2/3 and may include L4
+ *      if it's a TCP/UDP pkt
+ *
+ * Returns:
+ *    -1:  error happens during parsing
+ *     0:  protocol headers parsed, but too big to be copied
+ *     1:  protocol headers parsed and copied
+ *
+ * Other effects:
+ *    1. related *ctx fields are updated.
+ *    2. ctx->copy_size is # of bytes copied
+ *    3. the portion to be copied is guaranteed to be in the linear part
+ *
+ */
+static int
+vmxnet3_parse_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
+		  struct vmxnet3_tx_ctx *ctx,
+		  struct vmxnet3_adapter *adapter)
+{
+	u8 protocol = 0;
+
+	if (ctx->mss) {	/* TSO */
+		if (VMXNET3_VERSION_GE_4(adapter) && skb->encapsulation) {
+			ctx->l4_offset = skb_inner_transport_offset(skb);
+			ctx->l4_hdr_size = inner_tcp_hdrlen(skb);
+			ctx->copy_size = ctx->l4_offset + ctx->l4_hdr_size;
+		} else {
+			ctx->l4_offset = skb_transport_offset(skb);
+			ctx->l4_hdr_size = tcp_hdrlen(skb);
+			ctx->copy_size = ctx->l4_offset + ctx->l4_hdr_size;
+		}
+	} else {
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			/* For encap packets, skb_checksum_start_offset refers
+			 * to inner L4 offset. Thus, below works for encap as
+			 * well as non-encap case
+			 */
+			ctx->l4_offset = skb_checksum_start_offset(skb);
+
+			if (VMXNET3_VERSION_GE_4(adapter) &&
+			    skb->encapsulation) {
+				struct iphdr *iph = inner_ip_hdr(skb);
+
+				if (iph->version == 4) {
+					protocol = iph->protocol;
+				} else {
+					const struct ipv6hdr *ipv6h;
+
+					ipv6h = inner_ipv6_hdr(skb);
+					protocol = ipv6h->nexthdr;
+				}
+			} else {
+				if (ctx->ipv4) {
+					const struct iphdr *iph = ip_hdr(skb);
+
+					protocol = iph->protocol;
+				} else if (ctx->ipv6) {
+					const struct ipv6hdr *ipv6h;
+
+					ipv6h = ipv6_hdr(skb);
+					protocol = ipv6h->nexthdr;
+				}
+			}
+
+			switch (protocol) {
+			case IPPROTO_TCP:
+				ctx->l4_hdr_size = skb->encapsulation ? inner_tcp_hdrlen(skb) :
+						   tcp_hdrlen(skb);
+				break;
+			case IPPROTO_UDP:
+				ctx->l4_hdr_size = sizeof(struct udphdr);
+				break;
+			default:
+				ctx->l4_hdr_size = 0;
+				break;
+			}
+
+			ctx->copy_size = min(ctx->l4_offset +
+					 ctx->l4_hdr_size, skb->len);
+		} else {
+			ctx->l4_offset = 0;
+			ctx->l4_hdr_size = 0;
+			/* copy as much as allowed */
+			ctx->copy_size = min_t(unsigned int,
+					       tq->txdata_desc_size,
+					       skb_headlen(skb));
+		}
+
+		if (skb->len <= VMXNET3_HDR_COPY_SIZE)
+			ctx->copy_size = skb->len;
+
+		/* make sure headers are accessible directly */
+		if (unlikely(!pskb_may_pull(skb, ctx->copy_size)))
+			goto err;
+	}
+
+	if (unlikely(ctx->copy_size > tq->txdata_desc_size)) {
+		tq->stats.oversized_hdr++;
+		ctx->copy_size = 0;
+		return 0;
+	}
+
+	return 1;
+err:
+	return -1;
+}
+
+/*
+ *    copy relevant protocol headers to the transmit ring:
+ *      For a tso pkt, relevant headers are L2/3/4 including options
+ *      For a pkt requesting csum offloading, they are L2/3 and may include L4
+ *      if it's a TCP/UDP pkt
+ *
+ *
+ *    Note that this requires that vmxnet3_parse_hdr be called first to set the
+ *      appropriate bits in ctx first
+ */
+static void
+vmxnet3_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
+		 struct vmxnet3_tx_ctx *ctx,
+		 struct vmxnet3_adapter *adapter)
+{
+	struct Vmxnet3_TxDataDesc *tdd;
+
+	tdd = (struct Vmxnet3_TxDataDesc *)((u8 *)tq->data_ring.base +
+					    tq->tx_ring.next2fill *
+					    tq->txdata_desc_size);
+
+	memcpy(tdd->data, skb->data, ctx->copy_size);
+	netdev_dbg(adapter->netdev,
+		"copy %u bytes to dataRing[%u]\n",
+		ctx->copy_size, tq->tx_ring.next2fill);
+}
+
+
+static void
+vmxnet3_prepare_inner_tso(struct sk_buff *skb,
+			  struct vmxnet3_tx_ctx *ctx)
+{
+	struct tcphdr *tcph = inner_tcp_hdr(skb);
+	struct iphdr *iph = inner_ip_hdr(skb);
+
+	if (iph->version == 4) {
+		iph->check = 0;
+		tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
+						 IPPROTO_TCP, 0);
+	} else {
+		struct ipv6hdr *iph = inner_ipv6_hdr(skb);
+
+		tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0,
+					       IPPROTO_TCP, 0);
+	}
+}
+
+static void
+vmxnet3_prepare_tso(struct sk_buff *skb,
+		    struct vmxnet3_tx_ctx *ctx)
+{
+	struct tcphdr *tcph = tcp_hdr(skb);
+
+	if (ctx->ipv4) {
+		struct iphdr *iph = ip_hdr(skb);
+
+		iph->check = 0;
+		tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
+						 IPPROTO_TCP, 0);
+	} else if (ctx->ipv6) {
+		tcp_v6_gso_csum_prep(skb);
+	}
+}
+
+static int txd_estimate(const struct sk_buff *skb)
+{
+	int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1;
+	int i;
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+		count += VMXNET3_TXD_NEEDED(skb_frag_size(frag));
+	}
+	return count;
+}
+
+/*
+ * Transmits a pkt thru a given tq
+ * Returns:
+ *    NETDEV_TX_OK:      descriptors are setup successfully
+ *    NETDEV_TX_OK:      error occurred, the pkt is dropped
+ *    NETDEV_TX_BUSY:    tx ring is full, queue is stopped
+ *
+ * Side-effects:
+ *    1. tx ring may be changed
+ *    2. tq stats may be updated accordingly
+ *    3. shared->txNumDeferred may be updated
+ */
+
+static int
+vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
+		struct vmxnet3_adapter *adapter, struct net_device *netdev)
+{
+	int ret;
+	u32 count;
+	int num_pkts;
+	int tx_num_deferred;
+	unsigned long flags;
+	struct vmxnet3_tx_ctx ctx;
+	union Vmxnet3_GenericDesc *gdesc;
+#ifdef __BIG_ENDIAN_BITFIELD
+	/* Use temporary descriptor to avoid touching bits multiple times */
+	union Vmxnet3_GenericDesc tempTxDesc;
+#endif
+
+	count = txd_estimate(skb);
+
+	ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP));
+	ctx.ipv6 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IPV6));
+
+	ctx.mss = skb_shinfo(skb)->gso_size;
+	if (ctx.mss) {
+		if (skb_header_cloned(skb)) {
+			if (unlikely(pskb_expand_head(skb, 0, 0,
+						      GFP_ATOMIC) != 0)) {
+				tq->stats.drop_tso++;
+				goto drop_pkt;
+			}
+			tq->stats.copy_skb_header++;
+		}
+		if (skb->encapsulation) {
+			vmxnet3_prepare_inner_tso(skb, &ctx);
+		} else {
+			vmxnet3_prepare_tso(skb, &ctx);
+		}
+	} else {
+		if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) {
+
+			/* non-tso pkts must not use more than
+			 * VMXNET3_MAX_TXD_PER_PKT entries
+			 */
+			if (skb_linearize(skb) != 0) {
+				tq->stats.drop_too_many_frags++;
+				goto drop_pkt;
+			}
+			tq->stats.linearized++;
+
+			/* recalculate the # of descriptors to use */
+			count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1;
+		}
+	}
+
+	ret = vmxnet3_parse_hdr(skb, tq, &ctx, adapter);
+	if (ret >= 0) {
+		BUG_ON(ret <= 0 && ctx.copy_size != 0);
+		/* hdrs parsed, check against other limits */
+		if (ctx.mss) {
+			if (unlikely(ctx.l4_offset + ctx.l4_hdr_size >
+				     VMXNET3_MAX_TX_BUF_SIZE)) {
+				tq->stats.drop_oversized_hdr++;
+				goto drop_pkt;
+			}
+		} else {
+			if (skb->ip_summed == CHECKSUM_PARTIAL) {
+				if (unlikely(ctx.l4_offset +
+					     skb->csum_offset >
+					     VMXNET3_MAX_CSUM_OFFSET)) {
+					tq->stats.drop_oversized_hdr++;
+					goto drop_pkt;
+				}
+			}
+		}
+	} else {
+		tq->stats.drop_hdr_inspect_err++;
+		goto drop_pkt;
+	}
+
+	spin_lock_irqsave(&tq->tx_lock, flags);
+
+	if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) {
+		tq->stats.tx_ring_full++;
+		netdev_dbg(adapter->netdev,
+			"tx queue stopped on %s, next2comp %u"
+			" next2fill %u\n", adapter->netdev->name,
+			tq->tx_ring.next2comp, tq->tx_ring.next2fill);
+
+		vmxnet3_tq_stop(tq, adapter);
+		spin_unlock_irqrestore(&tq->tx_lock, flags);
+		return NETDEV_TX_BUSY;
+	}
+
+
+	vmxnet3_copy_hdr(skb, tq, &ctx, adapter);
+
+	/* fill tx descs related to addr & len */
+	if (vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter))
+		goto unlock_drop_pkt;
+
+	/* setup the EOP desc */
+	ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP);
+
+	/* setup the SOP desc */
+#ifdef __BIG_ENDIAN_BITFIELD
+	gdesc = &tempTxDesc;
+	gdesc->dword[2] = ctx.sop_txd->dword[2];
+	gdesc->dword[3] = ctx.sop_txd->dword[3];
+#else
+	gdesc = ctx.sop_txd;
+#endif
+	tx_num_deferred = le32_to_cpu(tq->shared->txNumDeferred);
+	if (ctx.mss) {
+		if (VMXNET3_VERSION_GE_4(adapter) && skb->encapsulation) {
+			gdesc->txd.hlen = ctx.l4_offset + ctx.l4_hdr_size;
+			gdesc->txd.om = VMXNET3_OM_ENCAP;
+			gdesc->txd.msscof = ctx.mss;
+
+			if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM)
+				gdesc->txd.oco = 1;
+		} else {
+			gdesc->txd.hlen = ctx.l4_offset + ctx.l4_hdr_size;
+			gdesc->txd.om = VMXNET3_OM_TSO;
+			gdesc->txd.msscof = ctx.mss;
+		}
+		num_pkts = (skb->len - gdesc->txd.hlen + ctx.mss - 1) / ctx.mss;
+	} else {
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			if (VMXNET3_VERSION_GE_4(adapter) &&
+			    skb->encapsulation) {
+				gdesc->txd.hlen = ctx.l4_offset +
+						  ctx.l4_hdr_size;
+				gdesc->txd.om = VMXNET3_OM_ENCAP;
+				gdesc->txd.msscof = 0;		/* Reserved */
+			} else {
+				gdesc->txd.hlen = ctx.l4_offset;
+				gdesc->txd.om = VMXNET3_OM_CSUM;
+				gdesc->txd.msscof = ctx.l4_offset +
+						    skb->csum_offset;
+			}
+		} else {
+			gdesc->txd.om = 0;
+			gdesc->txd.msscof = 0;
+		}
+		num_pkts = 1;
+	}
+	le32_add_cpu(&tq->shared->txNumDeferred, num_pkts);
+	tx_num_deferred += num_pkts;
+
+	if (skb_vlan_tag_present(skb)) {
+		gdesc->txd.ti = 1;
+		gdesc->txd.tci = skb_vlan_tag_get(skb);
+	}
+
+	/* Ensure that the write to (&gdesc->txd)->gen will be observed after
+	 * all other writes to &gdesc->txd.
+	 */
+	dma_wmb();
+
+	/* finally flips the GEN bit of the SOP desc. */
+	gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^
+						  VMXNET3_TXD_GEN);
+#ifdef __BIG_ENDIAN_BITFIELD
+	/* Finished updating in bitfields of Tx Desc, so write them in original
+	 * place.
+	 */
+	vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc,
+			   (struct Vmxnet3_TxDesc *)ctx.sop_txd);
+	gdesc = ctx.sop_txd;
+#endif
+	netdev_dbg(adapter->netdev,
+		"txd[%u]: SOP 0x%Lx 0x%x 0x%x\n",
+		(u32)(ctx.sop_txd -
+		tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr),
+		le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3]));
+
+	spin_unlock_irqrestore(&tq->tx_lock, flags);
+
+	if (tx_num_deferred >= le32_to_cpu(tq->shared->txThreshold)) {
+		tq->shared->txNumDeferred = 0;
+		VMXNET3_WRITE_BAR0_REG(adapter,
+				       VMXNET3_REG_TXPROD + tq->qid * 8,
+				       tq->tx_ring.next2fill);
+	}
+
+	return NETDEV_TX_OK;
+
+unlock_drop_pkt:
+	spin_unlock_irqrestore(&tq->tx_lock, flags);
+drop_pkt:
+	tq->stats.drop_total++;
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+
+static netdev_tx_t
+vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	BUG_ON(skb->queue_mapping > adapter->num_tx_queues);
+	return vmxnet3_tq_xmit(skb,
+			       &adapter->tx_queue[skb->queue_mapping],
+			       adapter, netdev);
+}
+
+
+static void
+vmxnet3_rx_csum(struct vmxnet3_adapter *adapter,
+		struct sk_buff *skb,
+		union Vmxnet3_GenericDesc *gdesc)
+{
+	if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) {
+		if (gdesc->rcd.v4 &&
+		    (le32_to_cpu(gdesc->dword[3]) &
+		     VMXNET3_RCD_CSUM_OK) == VMXNET3_RCD_CSUM_OK) {
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+			if ((le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))) {
+				skb->csum_level = 1;
+			}
+			WARN_ON_ONCE(!(gdesc->rcd.tcp || gdesc->rcd.udp) &&
+				     !(le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT)));
+			WARN_ON_ONCE(gdesc->rcd.frg &&
+				     !(le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT)));
+		} else if (gdesc->rcd.v6 && (le32_to_cpu(gdesc->dword[3]) &
+					     (1 << VMXNET3_RCD_TUC_SHIFT))) {
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+			if ((le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))) {
+				skb->csum_level = 1;
+			}
+			WARN_ON_ONCE(!(gdesc->rcd.tcp || gdesc->rcd.udp) &&
+				     !(le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT)));
+			WARN_ON_ONCE(gdesc->rcd.frg &&
+				     !(le32_to_cpu(gdesc->dword[0]) &
+				     (1UL << VMXNET3_RCD_HDR_INNER_SHIFT)));
+		} else {
+			if (gdesc->rcd.csum) {
+				skb->csum = htons(gdesc->rcd.csum);
+				skb->ip_summed = CHECKSUM_PARTIAL;
+			} else {
+				skb_checksum_none_assert(skb);
+			}
+		}
+	} else {
+		skb_checksum_none_assert(skb);
+	}
+}
+
+
+static void
+vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd,
+		 struct vmxnet3_rx_ctx *ctx,  struct vmxnet3_adapter *adapter)
+{
+	rq->stats.drop_err++;
+	if (!rcd->fcs)
+		rq->stats.drop_fcs++;
+
+	rq->stats.drop_total++;
+
+	/*
+	 * We do not unmap and chain the rx buffer to the skb.
+	 * We basically pretend this buffer is not used and will be recycled
+	 * by vmxnet3_rq_alloc_rx_buf()
+	 */
+
+	/*
+	 * ctx->skb may be NULL if this is the first and the only one
+	 * desc for the pkt
+	 */
+	if (ctx->skb)
+		dev_kfree_skb_irq(ctx->skb);
+
+	ctx->skb = NULL;
+}
+
+
+static u32
+vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb,
+		    union Vmxnet3_GenericDesc *gdesc)
+{
+	u32 hlen, maplen;
+	union {
+		void *ptr;
+		struct ethhdr *eth;
+		struct vlan_ethhdr *veth;
+		struct iphdr *ipv4;
+		struct ipv6hdr *ipv6;
+		struct tcphdr *tcp;
+	} hdr;
+	BUG_ON(gdesc->rcd.tcp == 0);
+
+	maplen = skb_headlen(skb);
+	if (unlikely(sizeof(struct iphdr) + sizeof(struct tcphdr) > maplen))
+		return 0;
+
+	if (skb->protocol == cpu_to_be16(ETH_P_8021Q) ||
+	    skb->protocol == cpu_to_be16(ETH_P_8021AD))
+		hlen = sizeof(struct vlan_ethhdr);
+	else
+		hlen = sizeof(struct ethhdr);
+
+	hdr.eth = eth_hdr(skb);
+	if (gdesc->rcd.v4) {
+		BUG_ON(hdr.eth->h_proto != htons(ETH_P_IP) &&
+		       hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IP));
+		hdr.ptr += hlen;
+		BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP);
+		hlen = hdr.ipv4->ihl << 2;
+		hdr.ptr += hdr.ipv4->ihl << 2;
+	} else if (gdesc->rcd.v6) {
+		BUG_ON(hdr.eth->h_proto != htons(ETH_P_IPV6) &&
+		       hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IPV6));
+		hdr.ptr += hlen;
+		/* Use an estimated value, since we also need to handle
+		 * TSO case.
+		 */
+		if (hdr.ipv6->nexthdr != IPPROTO_TCP)
+			return sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
+		hlen = sizeof(struct ipv6hdr);
+		hdr.ptr += sizeof(struct ipv6hdr);
+	} else {
+		/* Non-IP pkt, dont estimate header length */
+		return 0;
+	}
+
+	if (hlen + sizeof(struct tcphdr) > maplen)
+		return 0;
+
+	return (hlen + (hdr.tcp->doff << 2));
+}
+
+static int
+vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
+		       struct vmxnet3_adapter *adapter, int quota)
+{
+	static const u32 rxprod_reg[2] = {
+		VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2
+	};
+	u32 num_pkts = 0;
+	bool skip_page_frags = false;
+	bool encap_lro = false;
+	struct Vmxnet3_RxCompDesc *rcd;
+	struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx;
+	u16 segCnt = 0, mss = 0;
+#ifdef __BIG_ENDIAN_BITFIELD
+	struct Vmxnet3_RxDesc rxCmdDesc;
+	struct Vmxnet3_RxCompDesc rxComp;
+#endif
+	vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd,
+			  &rxComp);
+	while (rcd->gen == rq->comp_ring.gen) {
+		struct vmxnet3_rx_buf_info *rbi;
+		struct sk_buff *skb, *new_skb = NULL;
+		struct page *new_page = NULL;
+		dma_addr_t new_dma_addr;
+		int num_to_alloc;
+		struct Vmxnet3_RxDesc *rxd;
+		u32 idx, ring_idx;
+		struct vmxnet3_cmd_ring	*ring = NULL;
+		if (num_pkts >= quota) {
+			/* we may stop even before we see the EOP desc of
+			 * the current pkt
+			 */
+			break;
+		}
+
+		/* Prevent any rcd field from being (speculatively) read before
+		 * rcd->gen is read.
+		 */
+		dma_rmb();
+
+		BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2 &&
+		       rcd->rqID != rq->dataRingQid);
+		idx = rcd->rxdIdx;
+		ring_idx = VMXNET3_GET_RING_IDX(adapter, rcd->rqID);
+		ring = rq->rx_ring + ring_idx;
+		vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd,
+				  &rxCmdDesc);
+		rbi = rq->buf_info[ring_idx] + idx;
+
+		BUG_ON(rxd->addr != rbi->dma_addr ||
+		       rxd->len != rbi->len);
+
+		if (unlikely(rcd->eop && rcd->err)) {
+			vmxnet3_rx_error(rq, rcd, ctx, adapter);
+			goto rcd_done;
+		}
+
+		if (rcd->sop) { /* first buf of the pkt */
+			bool rxDataRingUsed;
+			u16 len;
+
+			BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD ||
+			       (rcd->rqID != rq->qid &&
+				rcd->rqID != rq->dataRingQid));
+
+			BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB);
+			BUG_ON(ctx->skb != NULL || rbi->skb == NULL);
+
+			if (unlikely(rcd->len == 0)) {
+				/* Pretend the rx buffer is skipped. */
+				BUG_ON(!(rcd->sop && rcd->eop));
+				netdev_dbg(adapter->netdev,
+					"rxRing[%u][%u] 0 length\n",
+					ring_idx, idx);
+				goto rcd_done;
+			}
+
+			skip_page_frags = false;
+			ctx->skb = rbi->skb;
+
+			rxDataRingUsed =
+				VMXNET3_RX_DATA_RING(adapter, rcd->rqID);
+			len = rxDataRingUsed ? rcd->len : rbi->len;
+			new_skb = netdev_alloc_skb_ip_align(adapter->netdev,
+							    len);
+			if (new_skb == NULL) {
+				/* Skb allocation failed, do not handover this
+				 * skb to stack. Reuse it. Drop the existing pkt
+				 */
+				rq->stats.rx_buf_alloc_failure++;
+				ctx->skb = NULL;
+				rq->stats.drop_total++;
+				skip_page_frags = true;
+				goto rcd_done;
+			}
+
+			if (rxDataRingUsed) {
+				size_t sz;
+
+				BUG_ON(rcd->len > rq->data_ring.desc_size);
+
+				ctx->skb = new_skb;
+				sz = rcd->rxdIdx * rq->data_ring.desc_size;
+				memcpy(new_skb->data,
+				       &rq->data_ring.base[sz], rcd->len);
+			} else {
+				ctx->skb = rbi->skb;
+
+				new_dma_addr =
+					dma_map_single(&adapter->pdev->dev,
+						       new_skb->data, rbi->len,
+						       PCI_DMA_FROMDEVICE);
+				if (dma_mapping_error(&adapter->pdev->dev,
+						      new_dma_addr)) {
+					dev_kfree_skb(new_skb);
+					/* Skb allocation failed, do not
+					 * handover this skb to stack. Reuse
+					 * it. Drop the existing pkt.
+					 */
+					rq->stats.rx_buf_alloc_failure++;
+					ctx->skb = NULL;
+					rq->stats.drop_total++;
+					skip_page_frags = true;
+					goto rcd_done;
+				}
+
+				dma_unmap_single(&adapter->pdev->dev,
+						 rbi->dma_addr,
+						 rbi->len,
+						 PCI_DMA_FROMDEVICE);
+
+				/* Immediate refill */
+				rbi->skb = new_skb;
+				rbi->dma_addr = new_dma_addr;
+				rxd->addr = cpu_to_le64(rbi->dma_addr);
+				rxd->len = rbi->len;
+			}
+
+#ifdef VMXNET3_RSS
+			if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE &&
+			    (adapter->netdev->features & NETIF_F_RXHASH))
+				skb_set_hash(ctx->skb,
+					     le32_to_cpu(rcd->rssHash),
+					     PKT_HASH_TYPE_L3);
+#endif
+			skb_put(ctx->skb, rcd->len);
+
+			if (VMXNET3_VERSION_GE_2(adapter) &&
+			    rcd->type == VMXNET3_CDTYPE_RXCOMP_LRO) {
+				struct Vmxnet3_RxCompDescExt *rcdlro;
+				union Vmxnet3_GenericDesc *gdesc;
+
+				rcdlro = (struct Vmxnet3_RxCompDescExt *)rcd;
+				gdesc = (union Vmxnet3_GenericDesc *)rcd;
+
+				segCnt = rcdlro->segCnt;
+				WARN_ON_ONCE(segCnt == 0);
+				mss = rcdlro->mss;
+				if (unlikely(segCnt <= 1))
+					segCnt = 0;
+				encap_lro = (le32_to_cpu(gdesc->dword[0]) &
+					(1UL << VMXNET3_RCD_HDR_INNER_SHIFT));
+			} else {
+				segCnt = 0;
+			}
+		} else {
+			BUG_ON(ctx->skb == NULL && !skip_page_frags);
+
+			/* non SOP buffer must be type 1 in most cases */
+			BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE);
+			BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY);
+
+			/* If an sop buffer was dropped, skip all
+			 * following non-sop fragments. They will be reused.
+			 */
+			if (skip_page_frags)
+				goto rcd_done;
+
+			if (rcd->len) {
+				new_page = alloc_page(GFP_ATOMIC);
+				/* Replacement page frag could not be allocated.
+				 * Reuse this page. Drop the pkt and free the
+				 * skb which contained this page as a frag. Skip
+				 * processing all the following non-sop frags.
+				 */
+				if (unlikely(!new_page)) {
+					rq->stats.rx_buf_alloc_failure++;
+					dev_kfree_skb(ctx->skb);
+					ctx->skb = NULL;
+					skip_page_frags = true;
+					goto rcd_done;
+				}
+				new_dma_addr = dma_map_page(&adapter->pdev->dev,
+							    new_page,
+							    0, PAGE_SIZE,
+							    PCI_DMA_FROMDEVICE);
+				if (dma_mapping_error(&adapter->pdev->dev,
+						      new_dma_addr)) {
+					put_page(new_page);
+					rq->stats.rx_buf_alloc_failure++;
+					dev_kfree_skb(ctx->skb);
+					ctx->skb = NULL;
+					skip_page_frags = true;
+					goto rcd_done;
+				}
+
+				dma_unmap_page(&adapter->pdev->dev,
+					       rbi->dma_addr, rbi->len,
+					       PCI_DMA_FROMDEVICE);
+
+				vmxnet3_append_frag(ctx->skb, rcd, rbi);
+
+				/* Immediate refill */
+				rbi->page = new_page;
+				rbi->dma_addr = new_dma_addr;
+				rxd->addr = cpu_to_le64(rbi->dma_addr);
+				rxd->len = rbi->len;
+			}
+		}
+
+
+		skb = ctx->skb;
+		if (rcd->eop) {
+			u32 mtu = adapter->netdev->mtu;
+			skb->len += skb->data_len;
+
+			vmxnet3_rx_csum(adapter, skb,
+					(union Vmxnet3_GenericDesc *)rcd);
+			skb->protocol = eth_type_trans(skb, adapter->netdev);
+			if ((!rcd->tcp && !encap_lro) ||
+			    !(adapter->netdev->features & NETIF_F_LRO))
+				goto not_lro;
+
+			if (segCnt != 0 && mss != 0) {
+				skb_shinfo(skb)->gso_type = rcd->v4 ?
+					SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
+				skb_shinfo(skb)->gso_size = mss;
+				skb_shinfo(skb)->gso_segs = segCnt;
+			} else if ((segCnt != 0 || skb->len > mtu) && !encap_lro) {
+				u32 hlen;
+
+				hlen = vmxnet3_get_hdr_len(adapter, skb,
+					(union Vmxnet3_GenericDesc *)rcd);
+				if (hlen == 0)
+					goto not_lro;
+
+				skb_shinfo(skb)->gso_type =
+					rcd->v4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
+				if (segCnt != 0) {
+					skb_shinfo(skb)->gso_segs = segCnt;
+					skb_shinfo(skb)->gso_size =
+						DIV_ROUND_UP(skb->len -
+							hlen, segCnt);
+				} else {
+					skb_shinfo(skb)->gso_size = mtu - hlen;
+				}
+			}
+not_lro:
+			if (unlikely(rcd->ts))
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci);
+
+			if (adapter->netdev->features & NETIF_F_LRO)
+				netif_receive_skb(skb);
+			else
+				napi_gro_receive(&rq->napi, skb);
+
+			ctx->skb = NULL;
+			encap_lro = false;
+			num_pkts++;
+		}
+
+rcd_done:
+		/* device may have skipped some rx descs */
+		ring->next2comp = idx;
+		num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring);
+		ring = rq->rx_ring + ring_idx;
+
+		/* Ensure that the writes to rxd->gen bits will be observed
+		 * after all other writes to rxd objects.
+		 */
+		dma_wmb();
+
+		while (num_to_alloc) {
+			vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd,
+					  &rxCmdDesc);
+			BUG_ON(!rxd->addr);
+
+			/* Recv desc is ready to be used by the device */
+			rxd->gen = ring->gen;
+			vmxnet3_cmd_ring_adv_next2fill(ring);
+			num_to_alloc--;
+		}
+
+		/* if needed, update the register */
+		if (unlikely(rq->shared->updateRxProd)) {
+			VMXNET3_WRITE_BAR0_REG(adapter,
+					       rxprod_reg[ring_idx] + rq->qid * 8,
+					       ring->next2fill);
+		}
+
+		vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring);
+		vmxnet3_getRxComp(rcd,
+				  &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp);
+	}
+
+	return num_pkts;
+}
+
+
+static void
+vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
+		   struct vmxnet3_adapter *adapter)
+{
+	u32 i, ring_idx;
+	struct Vmxnet3_RxDesc *rxd;
+
+	/* ring has already been cleaned up */
+	if (!rq->rx_ring[0].base)
+		return;
+
+	for (ring_idx = 0; ring_idx < 2; ring_idx++) {
+		for (i = 0; i < rq->rx_ring[ring_idx].size; i++) {
+#ifdef __BIG_ENDIAN_BITFIELD
+			struct Vmxnet3_RxDesc rxDesc;
+#endif
+			vmxnet3_getRxDesc(rxd,
+				&rq->rx_ring[ring_idx].base[i].rxd, &rxDesc);
+
+			if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
+					rq->buf_info[ring_idx][i].skb) {
+				dma_unmap_single(&adapter->pdev->dev, rxd->addr,
+						 rxd->len, PCI_DMA_FROMDEVICE);
+				dev_kfree_skb(rq->buf_info[ring_idx][i].skb);
+				rq->buf_info[ring_idx][i].skb = NULL;
+			} else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY &&
+					rq->buf_info[ring_idx][i].page) {
+				dma_unmap_page(&adapter->pdev->dev, rxd->addr,
+					       rxd->len, PCI_DMA_FROMDEVICE);
+				put_page(rq->buf_info[ring_idx][i].page);
+				rq->buf_info[ring_idx][i].page = NULL;
+			}
+		}
+
+		rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN;
+		rq->rx_ring[ring_idx].next2fill =
+					rq->rx_ring[ring_idx].next2comp = 0;
+	}
+
+	rq->comp_ring.gen = VMXNET3_INIT_GEN;
+	rq->comp_ring.next2proc = 0;
+}
+
+
+static void
+vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter);
+}
+
+
+static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+			       struct vmxnet3_adapter *adapter)
+{
+	int i;
+	int j;
+
+	/* all rx buffers must have already been freed */
+	for (i = 0; i < 2; i++) {
+		if (rq->buf_info[i]) {
+			for (j = 0; j < rq->rx_ring[i].size; j++)
+				BUG_ON(rq->buf_info[i][j].page != NULL);
+		}
+	}
+
+
+	for (i = 0; i < 2; i++) {
+		if (rq->rx_ring[i].base) {
+			dma_free_coherent(&adapter->pdev->dev,
+					  rq->rx_ring[i].size
+					  * sizeof(struct Vmxnet3_RxDesc),
+					  rq->rx_ring[i].base,
+					  rq->rx_ring[i].basePA);
+			rq->rx_ring[i].base = NULL;
+		}
+	}
+
+	if (rq->data_ring.base) {
+		dma_free_coherent(&adapter->pdev->dev,
+				  rq->rx_ring[0].size * rq->data_ring.desc_size,
+				  rq->data_ring.base, rq->data_ring.basePA);
+		rq->data_ring.base = NULL;
+	}
+
+	if (rq->comp_ring.base) {
+		dma_free_coherent(&adapter->pdev->dev, rq->comp_ring.size
+				  * sizeof(struct Vmxnet3_RxCompDesc),
+				  rq->comp_ring.base, rq->comp_ring.basePA);
+		rq->comp_ring.base = NULL;
+	}
+
+	if (rq->buf_info[0]) {
+		size_t sz = sizeof(struct vmxnet3_rx_buf_info) *
+			(rq->rx_ring[0].size + rq->rx_ring[1].size);
+		dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0],
+				  rq->buf_info_pa);
+		rq->buf_info[0] = rq->buf_info[1] = NULL;
+	}
+}
+
+static void
+vmxnet3_rq_destroy_all_rxdataring(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
+
+		if (rq->data_ring.base) {
+			dma_free_coherent(&adapter->pdev->dev,
+					  (rq->rx_ring[0].size *
+					  rq->data_ring.desc_size),
+					  rq->data_ring.base,
+					  rq->data_ring.basePA);
+			rq->data_ring.base = NULL;
+			rq->data_ring.desc_size = 0;
+		}
+	}
+}
+
+static int
+vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
+		struct vmxnet3_adapter  *adapter)
+{
+	int i;
+
+	/* initialize buf_info */
+	for (i = 0; i < rq->rx_ring[0].size; i++) {
+
+		/* 1st buf for a pkt is skbuff */
+		if (i % adapter->rx_buf_per_pkt == 0) {
+			rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB;
+			rq->buf_info[0][i].len = adapter->skb_buf_size;
+		} else { /* subsequent bufs for a pkt is frag */
+			rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE;
+			rq->buf_info[0][i].len = PAGE_SIZE;
+		}
+	}
+	for (i = 0; i < rq->rx_ring[1].size; i++) {
+		rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE;
+		rq->buf_info[1][i].len = PAGE_SIZE;
+	}
+
+	/* reset internal state and allocate buffers for both rings */
+	for (i = 0; i < 2; i++) {
+		rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0;
+
+		memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size *
+		       sizeof(struct Vmxnet3_RxDesc));
+		rq->rx_ring[i].gen = VMXNET3_INIT_GEN;
+	}
+	if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1,
+				    adapter) == 0) {
+		/* at least has 1 rx buffer for the 1st ring */
+		return -ENOMEM;
+	}
+	vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter);
+
+	/* reset the comp ring */
+	rq->comp_ring.next2proc = 0;
+	memset(rq->comp_ring.base, 0, rq->comp_ring.size *
+	       sizeof(struct Vmxnet3_RxCompDesc));
+	rq->comp_ring.gen = VMXNET3_INIT_GEN;
+
+	/* reset rxctx */
+	rq->rx_ctx.skb = NULL;
+
+	/* stats are not reset */
+	return 0;
+}
+
+
+static int
+vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter)
+{
+	int i, err = 0;
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter);
+		if (unlikely(err)) {
+			dev_err(&adapter->netdev->dev, "%s: failed to "
+				"initialize rx queue%i\n",
+				adapter->netdev->name, i);
+			break;
+		}
+	}
+	return err;
+
+}
+
+
+static int
+vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter)
+{
+	int i;
+	size_t sz;
+	struct vmxnet3_rx_buf_info *bi;
+
+	for (i = 0; i < 2; i++) {
+
+		sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc);
+		rq->rx_ring[i].base = dma_alloc_coherent(
+						&adapter->pdev->dev, sz,
+						&rq->rx_ring[i].basePA,
+						GFP_KERNEL);
+		if (!rq->rx_ring[i].base) {
+			netdev_err(adapter->netdev,
+				   "failed to allocate rx ring %d\n", i);
+			goto err;
+		}
+	}
+
+	if ((adapter->rxdataring_enabled) && (rq->data_ring.desc_size != 0)) {
+		sz = rq->rx_ring[0].size * rq->data_ring.desc_size;
+		rq->data_ring.base =
+			dma_alloc_coherent(&adapter->pdev->dev, sz,
+					   &rq->data_ring.basePA,
+					   GFP_KERNEL);
+		if (!rq->data_ring.base) {
+			netdev_err(adapter->netdev,
+				   "rx data ring will be disabled\n");
+			adapter->rxdataring_enabled = false;
+		}
+	} else {
+		rq->data_ring.base = NULL;
+		rq->data_ring.desc_size = 0;
+	}
+
+	sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc);
+	rq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, sz,
+						&rq->comp_ring.basePA,
+						GFP_KERNEL);
+	if (!rq->comp_ring.base) {
+		netdev_err(adapter->netdev, "failed to allocate rx comp ring\n");
+		goto err;
+	}
+
+	sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size +
+						   rq->rx_ring[1].size);
+	bi = dma_alloc_coherent(&adapter->pdev->dev, sz, &rq->buf_info_pa,
+				GFP_KERNEL);
+	if (!bi)
+		goto err;
+
+	rq->buf_info[0] = bi;
+	rq->buf_info[1] = bi + rq->rx_ring[0].size;
+
+	return 0;
+
+err:
+	vmxnet3_rq_destroy(rq, adapter);
+	return -ENOMEM;
+}
+
+
+static int
+vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter)
+{
+	int i, err = 0;
+
+	adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter);
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter);
+		if (unlikely(err)) {
+			dev_err(&adapter->netdev->dev,
+				"%s: failed to create rx queue%i\n",
+				adapter->netdev->name, i);
+			goto err_out;
+		}
+	}
+
+	if (!adapter->rxdataring_enabled)
+		vmxnet3_rq_destroy_all_rxdataring(adapter);
+
+	return err;
+err_out:
+	vmxnet3_rq_destroy_all(adapter);
+	return err;
+
+}
+
+/* Multiple queue aware polling function for tx and rx */
+
+static int
+vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget)
+{
+	int rcd_done = 0, i;
+	if (unlikely(adapter->shared->ecr))
+		vmxnet3_process_events(adapter);
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter);
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i],
+						   adapter, budget);
+	return rcd_done;
+}
+
+
+static int
+vmxnet3_poll(struct napi_struct *napi, int budget)
+{
+	struct vmxnet3_rx_queue *rx_queue = container_of(napi,
+					  struct vmxnet3_rx_queue, napi);
+	int rxd_done;
+
+	rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget);
+
+	if (rxd_done < budget) {
+		napi_complete_done(napi, rxd_done);
+		vmxnet3_enable_all_intrs(rx_queue->adapter);
+	}
+	return rxd_done;
+}
+
+/*
+ * NAPI polling function for MSI-X mode with multiple Rx queues
+ * Returns the # of the NAPI credit consumed (# of rx descriptors processed)
+ */
+
+static int
+vmxnet3_poll_rx_only(struct napi_struct *napi, int budget)
+{
+	struct vmxnet3_rx_queue *rq = container_of(napi,
+						struct vmxnet3_rx_queue, napi);
+	struct vmxnet3_adapter *adapter = rq->adapter;
+	int rxd_done;
+
+	/* When sharing interrupt with corresponding tx queue, process
+	 * tx completions in that queue as well
+	 */
+	if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) {
+		struct vmxnet3_tx_queue *tq =
+				&adapter->tx_queue[rq - adapter->rx_queue];
+		vmxnet3_tq_tx_complete(tq, adapter);
+	}
+
+	rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget);
+
+	if (rxd_done < budget) {
+		napi_complete_done(napi, rxd_done);
+		vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx);
+	}
+	return rxd_done;
+}
+
+
+#ifdef CONFIG_PCI_MSI
+
+/*
+ * Handle completion interrupts on tx queues
+ * Returns whether or not the intr is handled
+ */
+
+static irqreturn_t
+vmxnet3_msix_tx(int irq, void *data)
+{
+	struct vmxnet3_tx_queue *tq = data;
+	struct vmxnet3_adapter *adapter = tq->adapter;
+
+	if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+		vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx);
+
+	/* Handle the case where only one irq is allocate for all tx queues */
+	if (adapter->share_intr == VMXNET3_INTR_TXSHARE) {
+		int i;
+		for (i = 0; i < adapter->num_tx_queues; i++) {
+			struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i];
+			vmxnet3_tq_tx_complete(txq, adapter);
+		}
+	} else {
+		vmxnet3_tq_tx_complete(tq, adapter);
+	}
+	vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx);
+
+	return IRQ_HANDLED;
+}
+
+
+/*
+ * Handle completion interrupts on rx queues. Returns whether or not the
+ * intr is handled
+ */
+
+static irqreturn_t
+vmxnet3_msix_rx(int irq, void *data)
+{
+	struct vmxnet3_rx_queue *rq = data;
+	struct vmxnet3_adapter *adapter = rq->adapter;
+
+	/* disable intr if needed */
+	if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+		vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx);
+	napi_schedule(&rq->napi);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * vmxnet3_msix_event --
+ *
+ *    vmxnet3 msix event intr handler
+ *
+ * Result:
+ *    whether or not the intr is handled
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static irqreturn_t
+vmxnet3_msix_event(int irq, void *data)
+{
+	struct net_device *dev = data;
+	struct vmxnet3_adapter *adapter = netdev_priv(dev);
+
+	/* disable intr if needed */
+	if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+		vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx);
+
+	if (adapter->shared->ecr)
+		vmxnet3_process_events(adapter);
+
+	vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx);
+
+	return IRQ_HANDLED;
+}
+
+#endif /* CONFIG_PCI_MSI  */
+
+
+/* Interrupt handler for vmxnet3  */
+static irqreturn_t
+vmxnet3_intr(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct vmxnet3_adapter *adapter = netdev_priv(dev);
+
+	if (adapter->intr.type == VMXNET3_IT_INTX) {
+		u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
+		if (unlikely(icr == 0))
+			/* not ours */
+			return IRQ_NONE;
+	}
+
+
+	/* disable intr if needed */
+	if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+		vmxnet3_disable_all_intrs(adapter);
+
+	napi_schedule(&adapter->rx_queue[0].napi);
+
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+/* netpoll callback. */
+static void
+vmxnet3_netpoll(struct net_device *netdev)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	switch (adapter->intr.type) {
+#ifdef CONFIG_PCI_MSI
+	case VMXNET3_IT_MSIX: {
+		int i;
+		for (i = 0; i < adapter->num_rx_queues; i++)
+			vmxnet3_msix_rx(0, &adapter->rx_queue[i]);
+		break;
+	}
+#endif
+	case VMXNET3_IT_MSI:
+	default:
+		vmxnet3_intr(0, adapter->netdev);
+		break;
+	}
+
+}
+#endif	/* CONFIG_NET_POLL_CONTROLLER */
+
+static int
+vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
+{
+	struct vmxnet3_intr *intr = &adapter->intr;
+	int err = 0, i;
+	int vector = 0;
+
+#ifdef CONFIG_PCI_MSI
+	if (adapter->intr.type == VMXNET3_IT_MSIX) {
+		for (i = 0; i < adapter->num_tx_queues; i++) {
+			if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) {
+				sprintf(adapter->tx_queue[i].name, "%s-tx-%d",
+					adapter->netdev->name, vector);
+				err = request_irq(
+					      intr->msix_entries[vector].vector,
+					      vmxnet3_msix_tx, 0,
+					      adapter->tx_queue[i].name,
+					      &adapter->tx_queue[i]);
+			} else {
+				sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d",
+					adapter->netdev->name, vector);
+			}
+			if (err) {
+				dev_err(&adapter->netdev->dev,
+					"Failed to request irq for MSIX, %s, "
+					"error %d\n",
+					adapter->tx_queue[i].name, err);
+				return err;
+			}
+
+			/* Handle the case where only 1 MSIx was allocated for
+			 * all tx queues */
+			if (adapter->share_intr == VMXNET3_INTR_TXSHARE) {
+				for (; i < adapter->num_tx_queues; i++)
+					adapter->tx_queue[i].comp_ring.intr_idx
+								= vector;
+				vector++;
+				break;
+			} else {
+				adapter->tx_queue[i].comp_ring.intr_idx
+								= vector++;
+			}
+		}
+		if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE)
+			vector = 0;
+
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE)
+				sprintf(adapter->rx_queue[i].name, "%s-rx-%d",
+					adapter->netdev->name, vector);
+			else
+				sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d",
+					adapter->netdev->name, vector);
+			err = request_irq(intr->msix_entries[vector].vector,
+					  vmxnet3_msix_rx, 0,
+					  adapter->rx_queue[i].name,
+					  &(adapter->rx_queue[i]));
+			if (err) {
+				netdev_err(adapter->netdev,
+					   "Failed to request irq for MSIX, "
+					   "%s, error %d\n",
+					   adapter->rx_queue[i].name, err);
+				return err;
+			}
+
+			adapter->rx_queue[i].comp_ring.intr_idx = vector++;
+		}
+
+		sprintf(intr->event_msi_vector_name, "%s-event-%d",
+			adapter->netdev->name, vector);
+		err = request_irq(intr->msix_entries[vector].vector,
+				  vmxnet3_msix_event, 0,
+				  intr->event_msi_vector_name, adapter->netdev);
+		intr->event_intr_idx = vector;
+
+	} else if (intr->type == VMXNET3_IT_MSI) {
+		adapter->num_rx_queues = 1;
+		err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
+				  adapter->netdev->name, adapter->netdev);
+	} else {
+#endif
+		adapter->num_rx_queues = 1;
+		err = request_irq(adapter->pdev->irq, vmxnet3_intr,
+				  IRQF_SHARED, adapter->netdev->name,
+				  adapter->netdev);
+#ifdef CONFIG_PCI_MSI
+	}
+#endif
+	intr->num_intrs = vector + 1;
+	if (err) {
+		netdev_err(adapter->netdev,
+			   "Failed to request irq (intr type:%d), error %d\n",
+			   intr->type, err);
+	} else {
+		/* Number of rx queues will not change after this */
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
+			rq->qid = i;
+			rq->qid2 = i + adapter->num_rx_queues;
+			rq->dataRingQid = i + 2 * adapter->num_rx_queues;
+		}
+
+		/* init our intr settings */
+		for (i = 0; i < intr->num_intrs; i++)
+			intr->mod_levels[i] = UPT1_IML_ADAPTIVE;
+		if (adapter->intr.type != VMXNET3_IT_MSIX) {
+			adapter->intr.event_intr_idx = 0;
+			for (i = 0; i < adapter->num_tx_queues; i++)
+				adapter->tx_queue[i].comp_ring.intr_idx = 0;
+			adapter->rx_queue[0].comp_ring.intr_idx = 0;
+		}
+
+		netdev_info(adapter->netdev,
+			    "intr type %u, mode %u, %u vectors allocated\n",
+			    intr->type, intr->mask_mode, intr->num_intrs);
+	}
+
+	return err;
+}
+
+
+static void
+vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
+{
+	struct vmxnet3_intr *intr = &adapter->intr;
+	BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0);
+
+	switch (intr->type) {
+#ifdef CONFIG_PCI_MSI
+	case VMXNET3_IT_MSIX:
+	{
+		int i, vector = 0;
+
+		if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) {
+			for (i = 0; i < adapter->num_tx_queues; i++) {
+				free_irq(intr->msix_entries[vector++].vector,
+					 &(adapter->tx_queue[i]));
+				if (adapter->share_intr == VMXNET3_INTR_TXSHARE)
+					break;
+			}
+		}
+
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			free_irq(intr->msix_entries[vector++].vector,
+				 &(adapter->rx_queue[i]));
+		}
+
+		free_irq(intr->msix_entries[vector].vector,
+			 adapter->netdev);
+		BUG_ON(vector >= intr->num_intrs);
+		break;
+	}
+#endif
+	case VMXNET3_IT_MSI:
+		free_irq(adapter->pdev->irq, adapter->netdev);
+		break;
+	case VMXNET3_IT_INTX:
+		free_irq(adapter->pdev->irq, adapter->netdev);
+		break;
+	default:
+		BUG();
+	}
+}
+
+
+static void
+vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
+{
+	u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+	u16 vid;
+
+	/* allow untagged pkts */
+	VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
+
+	for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+		VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+}
+
+
+static int
+vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	if (!(netdev->flags & IFF_PROMISC)) {
+		u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+		unsigned long flags;
+
+		VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+		spin_lock_irqsave(&adapter->cmd_lock, flags);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	}
+
+	set_bit(vid, adapter->active_vlans);
+
+	return 0;
+}
+
+
+static int
+vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	if (!(netdev->flags & IFF_PROMISC)) {
+		u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+		unsigned long flags;
+
+		VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
+		spin_lock_irqsave(&adapter->cmd_lock, flags);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	}
+
+	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
+}
+
+
+static u8 *
+vmxnet3_copy_mc(struct net_device *netdev)
+{
+	u8 *buf = NULL;
+	u32 sz = netdev_mc_count(netdev) * ETH_ALEN;
+
+	/* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */
+	if (sz <= 0xffff) {
+		/* We may be called with BH disabled */
+		buf = kmalloc(sz, GFP_ATOMIC);
+		if (buf) {
+			struct netdev_hw_addr *ha;
+			int i = 0;
+
+			netdev_for_each_mc_addr(ha, netdev)
+				memcpy(buf + i++ * ETH_ALEN, ha->addr,
+				       ETH_ALEN);
+		}
+	}
+	return buf;
+}
+
+
+static void
+vmxnet3_set_mc(struct net_device *netdev)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	unsigned long flags;
+	struct Vmxnet3_RxFilterConf *rxConf =
+					&adapter->shared->devRead.rxFilterConf;
+	u8 *new_table = NULL;
+	dma_addr_t new_table_pa = 0;
+	bool new_table_pa_valid = false;
+	u32 new_mode = VMXNET3_RXM_UCAST;
+
+	if (netdev->flags & IFF_PROMISC) {
+		u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+		memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable));
+
+		new_mode |= VMXNET3_RXM_PROMISC;
+	} else {
+		vmxnet3_restore_vlan(adapter);
+	}
+
+	if (netdev->flags & IFF_BROADCAST)
+		new_mode |= VMXNET3_RXM_BCAST;
+
+	if (netdev->flags & IFF_ALLMULTI)
+		new_mode |= VMXNET3_RXM_ALL_MULTI;
+	else
+		if (!netdev_mc_empty(netdev)) {
+			new_table = vmxnet3_copy_mc(netdev);
+			if (new_table) {
+				size_t sz = netdev_mc_count(netdev) * ETH_ALEN;
+
+				rxConf->mfTableLen = cpu_to_le16(sz);
+				new_table_pa = dma_map_single(
+							&adapter->pdev->dev,
+							new_table,
+							sz,
+							PCI_DMA_TODEVICE);
+				if (!dma_mapping_error(&adapter->pdev->dev,
+						       new_table_pa)) {
+					new_mode |= VMXNET3_RXM_MCAST;
+					new_table_pa_valid = true;
+					rxConf->mfTablePA = cpu_to_le64(
+								new_table_pa);
+				}
+			}
+			if (!new_table_pa_valid) {
+				netdev_info(netdev,
+					    "failed to copy mcast list, setting ALL_MULTI\n");
+				new_mode |= VMXNET3_RXM_ALL_MULTI;
+			}
+		}
+
+	if (!(new_mode & VMXNET3_RXM_MCAST)) {
+		rxConf->mfTableLen = 0;
+		rxConf->mfTablePA = 0;
+	}
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	if (new_mode != rxConf->rxMode) {
+		rxConf->rxMode = cpu_to_le32(new_mode);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_UPDATE_RX_MODE);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+	}
+
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_MAC_FILTERS);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+	if (new_table_pa_valid)
+		dma_unmap_single(&adapter->pdev->dev, new_table_pa,
+				 rxConf->mfTableLen, PCI_DMA_TODEVICE);
+	kfree(new_table);
+}
+
+void
+vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter);
+}
+
+
+/*
+ *   Set up driver_shared based on settings in adapter.
+ */
+
+static void
+vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
+{
+	struct Vmxnet3_DriverShared *shared = adapter->shared;
+	struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
+	struct Vmxnet3_TxQueueConf *tqc;
+	struct Vmxnet3_RxQueueConf *rqc;
+	int i;
+
+	memset(shared, 0, sizeof(*shared));
+
+	/* driver settings */
+	shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC);
+	devRead->misc.driverInfo.version = cpu_to_le32(
+						VMXNET3_DRIVER_VERSION_NUM);
+	devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ?
+				VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64);
+	devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX;
+	*((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32(
+				*((u32 *)&devRead->misc.driverInfo.gos));
+	devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1);
+	devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1);
+
+	devRead->misc.ddPA = cpu_to_le64(adapter->adapter_pa);
+	devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter));
+
+	/* set up feature flags */
+	if (adapter->netdev->features & NETIF_F_RXCSUM)
+		devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
+
+	if (adapter->netdev->features & NETIF_F_LRO) {
+		devRead->misc.uptFeatures |= UPT1_F_LRO;
+		devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS);
+	}
+	if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
+		devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
+
+	if (adapter->netdev->features & (NETIF_F_GSO_UDP_TUNNEL |
+					 NETIF_F_GSO_UDP_TUNNEL_CSUM))
+		devRead->misc.uptFeatures |= UPT1_F_RXINNEROFLD;
+
+	devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu);
+	devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa);
+	devRead->misc.queueDescLen = cpu_to_le32(
+		adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
+		adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc));
+
+	/* tx queue settings */
+	devRead->misc.numTxQueues =  adapter->num_tx_queues;
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		struct vmxnet3_tx_queue	*tq = &adapter->tx_queue[i];
+		BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL);
+		tqc = &adapter->tqd_start[i].conf;
+		tqc->txRingBasePA   = cpu_to_le64(tq->tx_ring.basePA);
+		tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA);
+		tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA);
+		tqc->ddPA           = cpu_to_le64(tq->buf_info_pa);
+		tqc->txRingSize     = cpu_to_le32(tq->tx_ring.size);
+		tqc->dataRingSize   = cpu_to_le32(tq->data_ring.size);
+		tqc->txDataRingDescSize = cpu_to_le32(tq->txdata_desc_size);
+		tqc->compRingSize   = cpu_to_le32(tq->comp_ring.size);
+		tqc->ddLen          = cpu_to_le32(
+					sizeof(struct vmxnet3_tx_buf_info) *
+					tqc->txRingSize);
+		tqc->intrIdx        = tq->comp_ring.intr_idx;
+	}
+
+	/* rx queue settings */
+	devRead->misc.numRxQueues = adapter->num_rx_queues;
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct vmxnet3_rx_queue	*rq = &adapter->rx_queue[i];
+		rqc = &adapter->rqd_start[i].conf;
+		rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA);
+		rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA);
+		rqc->compRingBasePA  = cpu_to_le64(rq->comp_ring.basePA);
+		rqc->ddPA            = cpu_to_le64(rq->buf_info_pa);
+		rqc->rxRingSize[0]   = cpu_to_le32(rq->rx_ring[0].size);
+		rqc->rxRingSize[1]   = cpu_to_le32(rq->rx_ring[1].size);
+		rqc->compRingSize    = cpu_to_le32(rq->comp_ring.size);
+		rqc->ddLen           = cpu_to_le32(
+					sizeof(struct vmxnet3_rx_buf_info) *
+					(rqc->rxRingSize[0] +
+					 rqc->rxRingSize[1]));
+		rqc->intrIdx         = rq->comp_ring.intr_idx;
+		if (VMXNET3_VERSION_GE_3(adapter)) {
+			rqc->rxDataRingBasePA =
+				cpu_to_le64(rq->data_ring.basePA);
+			rqc->rxDataRingDescSize =
+				cpu_to_le16(rq->data_ring.desc_size);
+		}
+	}
+
+#ifdef VMXNET3_RSS
+	memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf));
+
+	if (adapter->rss) {
+		struct UPT1_RSSConf *rssConf = adapter->rss_conf;
+
+		devRead->misc.uptFeatures |= UPT1_F_RSS;
+		devRead->misc.numRxQueues = adapter->num_rx_queues;
+		rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 |
+				    UPT1_RSS_HASH_TYPE_IPV4 |
+				    UPT1_RSS_HASH_TYPE_TCP_IPV6 |
+				    UPT1_RSS_HASH_TYPE_IPV6;
+		rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ;
+		rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE;
+		rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE;
+		netdev_rss_key_fill(rssConf->hashKey, sizeof(rssConf->hashKey));
+
+		for (i = 0; i < rssConf->indTableSize; i++)
+			rssConf->indTable[i] = ethtool_rxfh_indir_default(
+				i, adapter->num_rx_queues);
+
+		devRead->rssConfDesc.confVer = 1;
+		devRead->rssConfDesc.confLen = cpu_to_le32(sizeof(*rssConf));
+		devRead->rssConfDesc.confPA =
+			cpu_to_le64(adapter->rss_conf_pa);
+	}
+
+#endif /* VMXNET3_RSS */
+
+	/* intr settings */
+	devRead->intrConf.autoMask = adapter->intr.mask_mode ==
+				     VMXNET3_IMM_AUTO;
+	devRead->intrConf.numIntrs = adapter->intr.num_intrs;
+	for (i = 0; i < adapter->intr.num_intrs; i++)
+		devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i];
+
+	devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx;
+	devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL);
+
+	/* rx filter settings */
+	devRead->rxFilterConf.rxMode = 0;
+	vmxnet3_restore_vlan(adapter);
+	vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr);
+
+	/* the rest are already zeroed */
+}
+
+static void
+vmxnet3_init_coalesce(struct vmxnet3_adapter *adapter)
+{
+	struct Vmxnet3_DriverShared *shared = adapter->shared;
+	union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
+	unsigned long flags;
+
+	if (!VMXNET3_VERSION_GE_3(adapter))
+		return;
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	cmdInfo->varConf.confVer = 1;
+	cmdInfo->varConf.confLen =
+		cpu_to_le32(sizeof(*adapter->coal_conf));
+	cmdInfo->varConf.confPA  = cpu_to_le64(adapter->coal_conf_pa);
+
+	if (adapter->default_coal_mode) {
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_GET_COALESCE);
+	} else {
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_SET_COALESCE);
+	}
+
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+}
+
+static void
+vmxnet3_init_rssfields(struct vmxnet3_adapter *adapter)
+{
+	struct Vmxnet3_DriverShared *shared = adapter->shared;
+	union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
+	unsigned long flags;
+
+	if (!VMXNET3_VERSION_GE_4(adapter))
+		return;
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+
+	if (adapter->default_rss_fields) {
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_GET_RSS_FIELDS);
+		adapter->rss_fields =
+			VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+	} else {
+		cmdInfo->setRssFields = adapter->rss_fields;
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_SET_RSS_FIELDS);
+		/* Not all requested RSS may get applied, so get and
+		 * cache what was actually applied.
+		 */
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_GET_RSS_FIELDS);
+		adapter->rss_fields =
+			VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+	}
+
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+}
+
+int
+vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
+{
+	int err, i;
+	u32 ret;
+	unsigned long flags;
+
+	netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d,"
+		" ring sizes %u %u %u\n", adapter->netdev->name,
+		adapter->skb_buf_size, adapter->rx_buf_per_pkt,
+		adapter->tx_queue[0].tx_ring.size,
+		adapter->rx_queue[0].rx_ring[0].size,
+		adapter->rx_queue[0].rx_ring[1].size);
+
+	vmxnet3_tq_init_all(adapter);
+	err = vmxnet3_rq_init_all(adapter);
+	if (err) {
+		netdev_err(adapter->netdev,
+			   "Failed to init rx queue error %d\n", err);
+		goto rq_err;
+	}
+
+	err = vmxnet3_request_irqs(adapter);
+	if (err) {
+		netdev_err(adapter->netdev,
+			   "Failed to setup irq for error %d\n", err);
+		goto irq_err;
+	}
+
+	vmxnet3_setup_driver_shared(adapter);
+
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO(
+			       adapter->shared_pa));
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI(
+			       adapter->shared_pa));
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_ACTIVATE_DEV);
+	ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+	if (ret != 0) {
+		netdev_err(adapter->netdev,
+			   "Failed to activate dev: error %u\n", ret);
+		err = -EINVAL;
+		goto activate_err;
+	}
+
+	vmxnet3_init_coalesce(adapter);
+	vmxnet3_init_rssfields(adapter);
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		VMXNET3_WRITE_BAR0_REG(adapter,
+				VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN,
+				adapter->rx_queue[i].rx_ring[0].next2fill);
+		VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 +
+				(i * VMXNET3_REG_ALIGN)),
+				adapter->rx_queue[i].rx_ring[1].next2fill);
+	}
+
+	/* Apply the rx filter settins last. */
+	vmxnet3_set_mc(adapter->netdev);
+
+	/*
+	 * Check link state when first activating device. It will start the
+	 * tx queue if the link is up.
+	 */
+	vmxnet3_check_link(adapter, true);
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		napi_enable(&adapter->rx_queue[i].napi);
+	vmxnet3_enable_all_intrs(adapter);
+	clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+	return 0;
+
+activate_err:
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0);
+	vmxnet3_free_irqs(adapter);
+irq_err:
+rq_err:
+	/* free up buffers we allocated */
+	vmxnet3_rq_cleanup_all(adapter);
+	return err;
+}
+
+
+void
+vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+}
+
+
+int
+vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
+{
+	int i;
+	unsigned long flags;
+	if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state))
+		return 0;
+
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_QUIESCE_DEV);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	vmxnet3_disable_all_intrs(adapter);
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		napi_disable(&adapter->rx_queue[i].napi);
+	netif_tx_disable(adapter->netdev);
+	adapter->link_speed = 0;
+	netif_carrier_off(adapter->netdev);
+
+	vmxnet3_tq_cleanup_all(adapter);
+	vmxnet3_rq_cleanup_all(adapter);
+	vmxnet3_free_irqs(adapter);
+	return 0;
+}
+
+
+static void
+vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
+{
+	u32 tmp;
+
+	tmp = *(u32 *)mac;
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp);
+
+	tmp = (mac[5] << 8) | mac[4];
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp);
+}
+
+
+static int
+vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
+{
+	struct sockaddr *addr = p;
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	vmxnet3_write_mac_addr(adapter, addr->sa_data);
+
+	return 0;
+}
+
+
+/* ==================== initialization and cleanup routines ============ */
+
+static int
+vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter)
+{
+	int err;
+	unsigned long mmio_start, mmio_len;
+	struct pci_dev *pdev = adapter->pdev;
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err);
+		return err;
+	}
+
+	err = pci_request_selected_regions(pdev, (1 << 2) - 1,
+					   vmxnet3_driver_name);
+	if (err) {
+		dev_err(&pdev->dev,
+			"Failed to request region for adapter: error %d\n", err);
+		goto err_enable_device;
+	}
+
+	pci_set_master(pdev);
+
+	mmio_start = pci_resource_start(pdev, 0);
+	mmio_len = pci_resource_len(pdev, 0);
+	adapter->hw_addr0 = ioremap(mmio_start, mmio_len);
+	if (!adapter->hw_addr0) {
+		dev_err(&pdev->dev, "Failed to map bar0\n");
+		err = -EIO;
+		goto err_ioremap;
+	}
+
+	mmio_start = pci_resource_start(pdev, 1);
+	mmio_len = pci_resource_len(pdev, 1);
+	adapter->hw_addr1 = ioremap(mmio_start, mmio_len);
+	if (!adapter->hw_addr1) {
+		dev_err(&pdev->dev, "Failed to map bar1\n");
+		err = -EIO;
+		goto err_bar1;
+	}
+	return 0;
+
+err_bar1:
+	iounmap(adapter->hw_addr0);
+err_ioremap:
+	pci_release_selected_regions(pdev, (1 << 2) - 1);
+err_enable_device:
+	pci_disable_device(pdev);
+	return err;
+}
+
+
+static void
+vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
+{
+	BUG_ON(!adapter->pdev);
+
+	iounmap(adapter->hw_addr0);
+	iounmap(adapter->hw_addr1);
+	pci_release_selected_regions(adapter->pdev, (1 << 2) - 1);
+	pci_disable_device(adapter->pdev);
+}
+
+
+static void
+vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
+{
+	size_t sz, i, ring0_size, ring1_size, comp_size;
+	if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE -
+				    VMXNET3_MAX_ETH_HDR_SIZE) {
+		adapter->skb_buf_size = adapter->netdev->mtu +
+					VMXNET3_MAX_ETH_HDR_SIZE;
+		if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE)
+			adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE;
+
+		adapter->rx_buf_per_pkt = 1;
+	} else {
+		adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE;
+		sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE +
+					    VMXNET3_MAX_ETH_HDR_SIZE;
+		adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE;
+	}
+
+	/*
+	 * for simplicity, force the ring0 size to be a multiple of
+	 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
+	 */
+	sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
+	ring0_size = adapter->rx_queue[0].rx_ring[0].size;
+	ring0_size = (ring0_size + sz - 1) / sz * sz;
+	ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE /
+			   sz * sz);
+	ring1_size = adapter->rx_queue[0].rx_ring[1].size;
+	ring1_size = (ring1_size + sz - 1) / sz * sz;
+	ring1_size = min_t(u32, ring1_size, VMXNET3_RX_RING2_MAX_SIZE /
+			   sz * sz);
+	comp_size = ring0_size + ring1_size;
+
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct vmxnet3_rx_queue	*rq = &adapter->rx_queue[i];
+
+		rq->rx_ring[0].size = ring0_size;
+		rq->rx_ring[1].size = ring1_size;
+		rq->comp_ring.size = comp_size;
+	}
+}
+
+
+int
+vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size,
+		      u32 rx_ring_size, u32 rx_ring2_size,
+		      u16 txdata_desc_size, u16 rxdata_desc_size)
+{
+	int err = 0, i;
+
+	for (i = 0; i < adapter->num_tx_queues; i++) {
+		struct vmxnet3_tx_queue	*tq = &adapter->tx_queue[i];
+		tq->tx_ring.size   = tx_ring_size;
+		tq->data_ring.size = tx_ring_size;
+		tq->comp_ring.size = tx_ring_size;
+		tq->txdata_desc_size = txdata_desc_size;
+		tq->shared = &adapter->tqd_start[i].ctrl;
+		tq->stopped = true;
+		tq->adapter = adapter;
+		tq->qid = i;
+		err = vmxnet3_tq_create(tq, adapter);
+		/*
+		 * Too late to change num_tx_queues. We cannot do away with
+		 * lesser number of queues than what we asked for
+		 */
+		if (err)
+			goto queue_err;
+	}
+
+	adapter->rx_queue[0].rx_ring[0].size = rx_ring_size;
+	adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size;
+	vmxnet3_adjust_rx_ring_size(adapter);
+
+	adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter);
+	for (i = 0; i < adapter->num_rx_queues; i++) {
+		struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
+		/* qid and qid2 for rx queues will be assigned later when num
+		 * of rx queues is finalized after allocating intrs */
+		rq->shared = &adapter->rqd_start[i].ctrl;
+		rq->adapter = adapter;
+		rq->data_ring.desc_size = rxdata_desc_size;
+		err = vmxnet3_rq_create(rq, adapter);
+		if (err) {
+			if (i == 0) {
+				netdev_err(adapter->netdev,
+					   "Could not allocate any rx queues. "
+					   "Aborting.\n");
+				goto queue_err;
+			} else {
+				netdev_info(adapter->netdev,
+					    "Number of rx queues changed "
+					    "to : %d.\n", i);
+				adapter->num_rx_queues = i;
+				err = 0;
+				break;
+			}
+		}
+	}
+
+	if (!adapter->rxdataring_enabled)
+		vmxnet3_rq_destroy_all_rxdataring(adapter);
+
+	return err;
+queue_err:
+	vmxnet3_tq_destroy_all(adapter);
+	return err;
+}
+
+static int
+vmxnet3_open(struct net_device *netdev)
+{
+	struct vmxnet3_adapter *adapter;
+	int err, i;
+
+	adapter = netdev_priv(netdev);
+
+	for (i = 0; i < adapter->num_tx_queues; i++)
+		spin_lock_init(&adapter->tx_queue[i].tx_lock);
+
+	if (VMXNET3_VERSION_GE_3(adapter)) {
+		unsigned long flags;
+		u16 txdata_desc_size;
+
+		spin_lock_irqsave(&adapter->cmd_lock, flags);
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+				       VMXNET3_CMD_GET_TXDATA_DESC_SIZE);
+		txdata_desc_size = VMXNET3_READ_BAR1_REG(adapter,
+							 VMXNET3_REG_CMD);
+		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+		if ((txdata_desc_size < VMXNET3_TXDATA_DESC_MIN_SIZE) ||
+		    (txdata_desc_size > VMXNET3_TXDATA_DESC_MAX_SIZE) ||
+		    (txdata_desc_size & VMXNET3_TXDATA_DESC_SIZE_MASK)) {
+			adapter->txdata_desc_size =
+				sizeof(struct Vmxnet3_TxDataDesc);
+		} else {
+			adapter->txdata_desc_size = txdata_desc_size;
+		}
+	} else {
+		adapter->txdata_desc_size = sizeof(struct Vmxnet3_TxDataDesc);
+	}
+
+	err = vmxnet3_create_queues(adapter,
+				    adapter->tx_ring_size,
+				    adapter->rx_ring_size,
+				    adapter->rx_ring2_size,
+				    adapter->txdata_desc_size,
+				    adapter->rxdata_desc_size);
+	if (err)
+		goto queue_err;
+
+	err = vmxnet3_activate_dev(adapter);
+	if (err)
+		goto activate_err;
+
+	return 0;
+
+activate_err:
+	vmxnet3_rq_destroy_all(adapter);
+	vmxnet3_tq_destroy_all(adapter);
+queue_err:
+	return err;
+}
+
+
+static int
+vmxnet3_close(struct net_device *netdev)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	/*
+	 * Reset_work may be in the middle of resetting the device, wait for its
+	 * completion.
+	 */
+	while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+		usleep_range(1000, 2000);
+
+	vmxnet3_quiesce_dev(adapter);
+
+	vmxnet3_rq_destroy_all(adapter);
+	vmxnet3_tq_destroy_all(adapter);
+
+	clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+
+
+	return 0;
+}
+
+
+void
+vmxnet3_force_close(struct vmxnet3_adapter *adapter)
+{
+	int i;
+
+	/*
+	 * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise
+	 * vmxnet3_close() will deadlock.
+	 */
+	BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state));
+
+	/* we need to enable NAPI, otherwise dev_close will deadlock */
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		napi_enable(&adapter->rx_queue[i].napi);
+	/*
+	 * Need to clear the quiesce bit to ensure that vmxnet3_close
+	 * can quiesce the device properly
+	 */
+	clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+	dev_close(adapter->netdev);
+}
+
+
+static int
+vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	int err = 0;
+
+	netdev->mtu = new_mtu;
+
+	/*
+	 * Reset_work may be in the middle of resetting the device, wait for its
+	 * completion.
+	 */
+	while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+		usleep_range(1000, 2000);
+
+	if (netif_running(netdev)) {
+		vmxnet3_quiesce_dev(adapter);
+		vmxnet3_reset_dev(adapter);
+
+		/* we need to re-create the rx queue based on the new mtu */
+		vmxnet3_rq_destroy_all(adapter);
+		vmxnet3_adjust_rx_ring_size(adapter);
+		err = vmxnet3_rq_create_all(adapter);
+		if (err) {
+			netdev_err(netdev,
+				   "failed to re-create rx queues, "
+				   " error %d. Closing it.\n", err);
+			goto out;
+		}
+
+		err = vmxnet3_activate_dev(adapter);
+		if (err) {
+			netdev_err(netdev,
+				   "failed to re-activate, error %d. "
+				   "Closing it\n", err);
+			goto out;
+		}
+	}
+
+out:
+	clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+	if (err)
+		vmxnet3_force_close(adapter);
+
+	return err;
+}
+
+
+static void
+vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
+		NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
+		NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
+		NETIF_F_LRO;
+
+	if (VMXNET3_VERSION_GE_4(adapter)) {
+		netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
+				NETIF_F_GSO_UDP_TUNNEL_CSUM;
+
+		netdev->hw_enc_features = NETIF_F_SG | NETIF_F_RXCSUM |
+			NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
+			NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
+			NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
+			NETIF_F_GSO_UDP_TUNNEL_CSUM;
+	}
+
+	if (dma64)
+		netdev->hw_features |= NETIF_F_HIGHDMA;
+	netdev->vlan_features = netdev->hw_features &
+				~(NETIF_F_HW_VLAN_CTAG_TX |
+				  NETIF_F_HW_VLAN_CTAG_RX);
+	netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
+}
+
+
+static void
+vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
+{
+	u32 tmp;
+
+	tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
+	*(u32 *)mac = tmp;
+
+	tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
+	mac[4] = tmp & 0xff;
+	mac[5] = (tmp >> 8) & 0xff;
+}
+
+#ifdef CONFIG_PCI_MSI
+
+/*
+ * Enable MSIx vectors.
+ * Returns :
+ *	VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required
+ *	 were enabled.
+ *	number of vectors which were enabled otherwise (this number is greater
+ *	 than VMXNET3_LINUX_MIN_MSIX_VECT)
+ */
+
+static int
+vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec)
+{
+	int ret = pci_enable_msix_range(adapter->pdev,
+					adapter->intr.msix_entries, nvec, nvec);
+
+	if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) {
+		dev_err(&adapter->netdev->dev,
+			"Failed to enable %d MSI-X, trying %d\n",
+			nvec, VMXNET3_LINUX_MIN_MSIX_VECT);
+
+		ret = pci_enable_msix_range(adapter->pdev,
+					    adapter->intr.msix_entries,
+					    VMXNET3_LINUX_MIN_MSIX_VECT,
+					    VMXNET3_LINUX_MIN_MSIX_VECT);
+	}
+
+	if (ret < 0) {
+		dev_err(&adapter->netdev->dev,
+			"Failed to enable MSI-X, error: %d\n", ret);
+	}
+
+	return ret;
+}
+
+
+#endif /* CONFIG_PCI_MSI */
+
+static void
+vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
+{
+	u32 cfg;
+	unsigned long flags;
+
+	/* intr settings */
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_GET_CONF_INTR);
+	cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	adapter->intr.type = cfg & 0x3;
+	adapter->intr.mask_mode = (cfg >> 2) & 0x3;
+
+	if (adapter->intr.type == VMXNET3_IT_AUTO) {
+		adapter->intr.type = VMXNET3_IT_MSIX;
+	}
+
+#ifdef CONFIG_PCI_MSI
+	if (adapter->intr.type == VMXNET3_IT_MSIX) {
+		int i, nvec;
+
+		nvec  = adapter->share_intr == VMXNET3_INTR_TXSHARE ?
+			1 : adapter->num_tx_queues;
+		nvec += adapter->share_intr == VMXNET3_INTR_BUDDYSHARE ?
+			0 : adapter->num_rx_queues;
+		nvec += 1;	/* for link event */
+		nvec = nvec > VMXNET3_LINUX_MIN_MSIX_VECT ?
+		       nvec : VMXNET3_LINUX_MIN_MSIX_VECT;
+
+		for (i = 0; i < nvec; i++)
+			adapter->intr.msix_entries[i].entry = i;
+
+		nvec = vmxnet3_acquire_msix_vectors(adapter, nvec);
+		if (nvec < 0)
+			goto msix_err;
+
+		/* If we cannot allocate one MSIx vector per queue
+		 * then limit the number of rx queues to 1
+		 */
+		if (nvec == VMXNET3_LINUX_MIN_MSIX_VECT) {
+			if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE
+			    || adapter->num_rx_queues != 1) {
+				adapter->share_intr = VMXNET3_INTR_TXSHARE;
+				netdev_err(adapter->netdev,
+					   "Number of rx queues : 1\n");
+				adapter->num_rx_queues = 1;
+			}
+		}
+
+		adapter->intr.num_intrs = nvec;
+		return;
+
+msix_err:
+		/* If we cannot allocate MSIx vectors use only one rx queue */
+		dev_info(&adapter->pdev->dev,
+			 "Failed to enable MSI-X, error %d. "
+			 "Limiting #rx queues to 1, try MSI.\n", nvec);
+
+		adapter->intr.type = VMXNET3_IT_MSI;
+	}
+
+	if (adapter->intr.type == VMXNET3_IT_MSI) {
+		if (!pci_enable_msi(adapter->pdev)) {
+			adapter->num_rx_queues = 1;
+			adapter->intr.num_intrs = 1;
+			return;
+		}
+	}
+#endif /* CONFIG_PCI_MSI */
+
+	adapter->num_rx_queues = 1;
+	dev_info(&adapter->netdev->dev,
+		 "Using INTx interrupt, #Rx queues: 1.\n");
+	adapter->intr.type = VMXNET3_IT_INTX;
+
+	/* INT-X related setting */
+	adapter->intr.num_intrs = 1;
+}
+
+
+static void
+vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter)
+{
+	if (adapter->intr.type == VMXNET3_IT_MSIX)
+		pci_disable_msix(adapter->pdev);
+	else if (adapter->intr.type == VMXNET3_IT_MSI)
+		pci_disable_msi(adapter->pdev);
+	else
+		BUG_ON(adapter->intr.type != VMXNET3_IT_INTX);
+}
+
+
+static void
+vmxnet3_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	adapter->tx_timeout_count++;
+
+	netdev_err(adapter->netdev, "tx hang\n");
+	schedule_work(&adapter->work);
+}
+
+
+static void
+vmxnet3_reset_work(struct work_struct *data)
+{
+	struct vmxnet3_adapter *adapter;
+
+	adapter = container_of(data, struct vmxnet3_adapter, work);
+
+	/* if another thread is resetting the device, no need to proceed */
+	if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+		return;
+
+	/* if the device is closed, we must leave it alone */
+	rtnl_lock();
+	if (netif_running(adapter->netdev)) {
+		netdev_notice(adapter->netdev, "resetting\n");
+		vmxnet3_quiesce_dev(adapter);
+		vmxnet3_reset_dev(adapter);
+		vmxnet3_activate_dev(adapter);
+	} else {
+		netdev_info(adapter->netdev, "already closed\n");
+	}
+	rtnl_unlock();
+
+	netif_wake_queue(adapter->netdev);
+	clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+}
+
+
+static int
+vmxnet3_probe_device(struct pci_dev *pdev,
+		     const struct pci_device_id *id)
+{
+	static const struct net_device_ops vmxnet3_netdev_ops = {
+		.ndo_open = vmxnet3_open,
+		.ndo_stop = vmxnet3_close,
+		.ndo_start_xmit = vmxnet3_xmit_frame,
+		.ndo_set_mac_address = vmxnet3_set_mac_addr,
+		.ndo_change_mtu = vmxnet3_change_mtu,
+		.ndo_fix_features = vmxnet3_fix_features,
+		.ndo_set_features = vmxnet3_set_features,
+		.ndo_features_check = vmxnet3_features_check,
+		.ndo_get_stats64 = vmxnet3_get_stats64,
+		.ndo_tx_timeout = vmxnet3_tx_timeout,
+		.ndo_set_rx_mode = vmxnet3_set_mc,
+		.ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid,
+		.ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+		.ndo_poll_controller = vmxnet3_netpoll,
+#endif
+	};
+	int err;
+	bool dma64;
+	u32 ver;
+	struct net_device *netdev;
+	struct vmxnet3_adapter *adapter;
+	u8 mac[ETH_ALEN];
+	int size;
+	int num_tx_queues;
+	int num_rx_queues;
+
+	if (!pci_msi_enabled())
+		enable_mq = 0;
+
+#ifdef VMXNET3_RSS
+	if (enable_mq)
+		num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES,
+				    (int)num_online_cpus());
+	else
+#endif
+		num_rx_queues = 1;
+	num_rx_queues = rounddown_pow_of_two(num_rx_queues);
+
+	if (enable_mq)
+		num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES,
+				    (int)num_online_cpus());
+	else
+		num_tx_queues = 1;
+
+	num_tx_queues = rounddown_pow_of_two(num_tx_queues);
+	netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter),
+				   max(num_tx_queues, num_rx_queues));
+	dev_info(&pdev->dev,
+		 "# of Tx queues : %d, # of Rx queues : %d\n",
+		 num_tx_queues, num_rx_queues);
+
+	if (!netdev)
+		return -ENOMEM;
+
+	pci_set_drvdata(pdev, netdev);
+	adapter = netdev_priv(netdev);
+	adapter->netdev = netdev;
+	adapter->pdev = pdev;
+
+	adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
+	adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
+	adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
+
+	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
+		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
+			dev_err(&pdev->dev,
+				"pci_set_consistent_dma_mask failed\n");
+			err = -EIO;
+			goto err_set_mask;
+		}
+		dma64 = true;
+	} else {
+		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
+			dev_err(&pdev->dev,
+				"pci_set_dma_mask failed\n");
+			err = -EIO;
+			goto err_set_mask;
+		}
+		dma64 = false;
+	}
+
+	spin_lock_init(&adapter->cmd_lock);
+	adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter,
+					     sizeof(struct vmxnet3_adapter),
+					     PCI_DMA_TODEVICE);
+	if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) {
+		dev_err(&pdev->dev, "Failed to map dma\n");
+		err = -EFAULT;
+		goto err_set_mask;
+	}
+	adapter->shared = dma_alloc_coherent(
+				&adapter->pdev->dev,
+				sizeof(struct Vmxnet3_DriverShared),
+				&adapter->shared_pa, GFP_KERNEL);
+	if (!adapter->shared) {
+		dev_err(&pdev->dev, "Failed to allocate memory\n");
+		err = -ENOMEM;
+		goto err_alloc_shared;
+	}
+
+	adapter->num_rx_queues = num_rx_queues;
+	adapter->num_tx_queues = num_tx_queues;
+	adapter->rx_buf_per_pkt = 1;
+
+	size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues;
+	size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues;
+	adapter->tqd_start = dma_alloc_coherent(&adapter->pdev->dev, size,
+						&adapter->queue_desc_pa,
+						GFP_KERNEL);
+
+	if (!adapter->tqd_start) {
+		dev_err(&pdev->dev, "Failed to allocate memory\n");
+		err = -ENOMEM;
+		goto err_alloc_queue_desc;
+	}
+	adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start +
+							    adapter->num_tx_queues);
+
+	adapter->pm_conf = dma_alloc_coherent(&adapter->pdev->dev,
+					      sizeof(struct Vmxnet3_PMConf),
+					      &adapter->pm_conf_pa,
+					      GFP_KERNEL);
+	if (adapter->pm_conf == NULL) {
+		err = -ENOMEM;
+		goto err_alloc_pm;
+	}
+
+#ifdef VMXNET3_RSS
+
+	adapter->rss_conf = dma_alloc_coherent(&adapter->pdev->dev,
+					       sizeof(struct UPT1_RSSConf),
+					       &adapter->rss_conf_pa,
+					       GFP_KERNEL);
+	if (adapter->rss_conf == NULL) {
+		err = -ENOMEM;
+		goto err_alloc_rss;
+	}
+#endif /* VMXNET3_RSS */
+
+	err = vmxnet3_alloc_pci_resources(adapter);
+	if (err < 0)
+		goto err_alloc_pci;
+
+	ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
+	if (ver & (1 << VMXNET3_REV_4)) {
+		VMXNET3_WRITE_BAR1_REG(adapter,
+				       VMXNET3_REG_VRRS,
+				       1 << VMXNET3_REV_4);
+		adapter->version = VMXNET3_REV_4 + 1;
+	} else if (ver & (1 << VMXNET3_REV_3)) {
+		VMXNET3_WRITE_BAR1_REG(adapter,
+				       VMXNET3_REG_VRRS,
+				       1 << VMXNET3_REV_3);
+		adapter->version = VMXNET3_REV_3 + 1;
+	} else if (ver & (1 << VMXNET3_REV_2)) {
+		VMXNET3_WRITE_BAR1_REG(adapter,
+				       VMXNET3_REG_VRRS,
+				       1 << VMXNET3_REV_2);
+		adapter->version = VMXNET3_REV_2 + 1;
+	} else if (ver & (1 << VMXNET3_REV_1)) {
+		VMXNET3_WRITE_BAR1_REG(adapter,
+				       VMXNET3_REG_VRRS,
+				       1 << VMXNET3_REV_1);
+		adapter->version = VMXNET3_REV_1 + 1;
+	} else {
+		dev_err(&pdev->dev,
+			"Incompatible h/w version (0x%x) for adapter\n", ver);
+		err = -EBUSY;
+		goto err_ver;
+	}
+	dev_dbg(&pdev->dev, "Using device version %d\n", adapter->version);
+
+	ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
+	if (ver & 1) {
+		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1);
+	} else {
+		dev_err(&pdev->dev,
+			"Incompatible upt version (0x%x) for adapter\n", ver);
+		err = -EBUSY;
+		goto err_ver;
+	}
+
+	if (VMXNET3_VERSION_GE_3(adapter)) {
+		adapter->coal_conf =
+			dma_alloc_coherent(&adapter->pdev->dev,
+					   sizeof(struct Vmxnet3_CoalesceScheme)
+					   ,
+					   &adapter->coal_conf_pa,
+					   GFP_KERNEL);
+		if (!adapter->coal_conf) {
+			err = -ENOMEM;
+			goto err_ver;
+		}
+		adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
+		adapter->default_coal_mode = true;
+	}
+
+	if (VMXNET3_VERSION_GE_4(adapter)) {
+		adapter->default_rss_fields = true;
+		adapter->rss_fields = VMXNET3_RSS_FIELDS_DEFAULT;
+	}
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+	vmxnet3_declare_features(adapter, dma64);
+
+	adapter->rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
+		VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
+
+	if (adapter->num_tx_queues == adapter->num_rx_queues)
+		adapter->share_intr = VMXNET3_INTR_BUDDYSHARE;
+	else
+		adapter->share_intr = VMXNET3_INTR_DONTSHARE;
+
+	vmxnet3_alloc_intr_resources(adapter);
+
+#ifdef VMXNET3_RSS
+	if (adapter->num_rx_queues > 1 &&
+	    adapter->intr.type == VMXNET3_IT_MSIX) {
+		adapter->rss = true;
+		netdev->hw_features |= NETIF_F_RXHASH;
+		netdev->features |= NETIF_F_RXHASH;
+		dev_dbg(&pdev->dev, "RSS is enabled.\n");
+	} else {
+		adapter->rss = false;
+	}
+#endif
+
+	vmxnet3_read_mac_addr(adapter, mac);
+	memcpy(netdev->dev_addr,  mac, netdev->addr_len);
+
+	netdev->netdev_ops = &vmxnet3_netdev_ops;
+	vmxnet3_set_ethtool_ops(netdev);
+	netdev->watchdog_timeo = 5 * HZ;
+
+	/* MTU range: 60 - 9000 */
+	netdev->min_mtu = VMXNET3_MIN_MTU;
+	netdev->max_mtu = VMXNET3_MAX_MTU;
+
+	INIT_WORK(&adapter->work, vmxnet3_reset_work);
+	set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+
+	if (adapter->intr.type == VMXNET3_IT_MSIX) {
+		int i;
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			netif_napi_add(adapter->netdev,
+				       &adapter->rx_queue[i].napi,
+				       vmxnet3_poll_rx_only, 64);
+		}
+	} else {
+		netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi,
+			       vmxnet3_poll, 64);
+	}
+
+	netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
+	netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues);
+
+	netif_carrier_off(netdev);
+	err = register_netdev(netdev);
+
+	if (err) {
+		dev_err(&pdev->dev, "Failed to register adapter\n");
+		goto err_register;
+	}
+
+	vmxnet3_check_link(adapter, false);
+	return 0;
+
+err_register:
+	if (VMXNET3_VERSION_GE_3(adapter)) {
+		dma_free_coherent(&adapter->pdev->dev,
+				  sizeof(struct Vmxnet3_CoalesceScheme),
+				  adapter->coal_conf, adapter->coal_conf_pa);
+	}
+	vmxnet3_free_intr_resources(adapter);
+err_ver:
+	vmxnet3_free_pci_resources(adapter);
+err_alloc_pci:
+#ifdef VMXNET3_RSS
+	dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf),
+			  adapter->rss_conf, adapter->rss_conf_pa);
+err_alloc_rss:
+#endif
+	dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf),
+			  adapter->pm_conf, adapter->pm_conf_pa);
+err_alloc_pm:
+	dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start,
+			  adapter->queue_desc_pa);
+err_alloc_queue_desc:
+	dma_free_coherent(&adapter->pdev->dev,
+			  sizeof(struct Vmxnet3_DriverShared),
+			  adapter->shared, adapter->shared_pa);
+err_alloc_shared:
+	dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa,
+			 sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE);
+err_set_mask:
+	free_netdev(netdev);
+	return err;
+}
+
+
+static void
+vmxnet3_remove_device(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	int size = 0;
+	int num_rx_queues;
+
+#ifdef VMXNET3_RSS
+	if (enable_mq)
+		num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES,
+				    (int)num_online_cpus());
+	else
+#endif
+		num_rx_queues = 1;
+	num_rx_queues = rounddown_pow_of_two(num_rx_queues);
+
+	cancel_work_sync(&adapter->work);
+
+	unregister_netdev(netdev);
+
+	vmxnet3_free_intr_resources(adapter);
+	vmxnet3_free_pci_resources(adapter);
+	if (VMXNET3_VERSION_GE_3(adapter)) {
+		dma_free_coherent(&adapter->pdev->dev,
+				  sizeof(struct Vmxnet3_CoalesceScheme),
+				  adapter->coal_conf, adapter->coal_conf_pa);
+	}
+#ifdef VMXNET3_RSS
+	dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf),
+			  adapter->rss_conf, adapter->rss_conf_pa);
+#endif
+	dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf),
+			  adapter->pm_conf, adapter->pm_conf_pa);
+
+	size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues;
+	size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues;
+	dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start,
+			  adapter->queue_desc_pa);
+	dma_free_coherent(&adapter->pdev->dev,
+			  sizeof(struct Vmxnet3_DriverShared),
+			  adapter->shared, adapter->shared_pa);
+	dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa,
+			 sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE);
+	free_netdev(netdev);
+}
+
+static void vmxnet3_shutdown_device(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	unsigned long flags;
+
+	/* Reset_work may be in the middle of resetting the device, wait for its
+	 * completion.
+	 */
+	while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+		usleep_range(1000, 2000);
+
+	if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED,
+			     &adapter->state)) {
+		clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+		return;
+	}
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_QUIESCE_DEV);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	vmxnet3_disable_all_intrs(adapter);
+
+	clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+}
+
+
+#ifdef CONFIG_PM
+
+static int
+vmxnet3_suspend(struct device *device)
+{
+	struct pci_dev *pdev = to_pci_dev(device);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+	struct Vmxnet3_PMConf *pmConf;
+	struct ethhdr *ehdr;
+	struct arphdr *ahdr;
+	u8 *arpreq;
+	struct in_device *in_dev;
+	struct in_ifaddr *ifa;
+	unsigned long flags;
+	int i = 0;
+
+	if (!netif_running(netdev))
+		return 0;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		napi_disable(&adapter->rx_queue[i].napi);
+
+	vmxnet3_disable_all_intrs(adapter);
+	vmxnet3_free_irqs(adapter);
+	vmxnet3_free_intr_resources(adapter);
+
+	netif_device_detach(netdev);
+
+	/* Create wake-up filters. */
+	pmConf = adapter->pm_conf;
+	memset(pmConf, 0, sizeof(*pmConf));
+
+	if (adapter->wol & WAKE_UCAST) {
+		pmConf->filters[i].patternSize = ETH_ALEN;
+		pmConf->filters[i].maskSize = 1;
+		memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
+		pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
+
+		pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
+		i++;
+	}
+
+	if (adapter->wol & WAKE_ARP) {
+		rcu_read_lock();
+
+		in_dev = __in_dev_get_rcu(netdev);
+		if (!in_dev) {
+			rcu_read_unlock();
+			goto skip_arp;
+		}
+
+		ifa = rcu_dereference(in_dev->ifa_list);
+		if (!ifa) {
+			rcu_read_unlock();
+			goto skip_arp;
+		}
+
+		pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/
+			sizeof(struct arphdr) +		/* ARP header */
+			2 * ETH_ALEN +		/* 2 Ethernet addresses*/
+			2 * sizeof(u32);	/*2 IPv4 addresses */
+		pmConf->filters[i].maskSize =
+			(pmConf->filters[i].patternSize - 1) / 8 + 1;
+
+		/* ETH_P_ARP in Ethernet header. */
+		ehdr = (struct ethhdr *)pmConf->filters[i].pattern;
+		ehdr->h_proto = htons(ETH_P_ARP);
+
+		/* ARPOP_REQUEST in ARP header. */
+		ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN];
+		ahdr->ar_op = htons(ARPOP_REQUEST);
+		arpreq = (u8 *)(ahdr + 1);
+
+		/* The Unicast IPv4 address in 'tip' field. */
+		arpreq += 2 * ETH_ALEN + sizeof(u32);
+		*(__be32 *)arpreq = ifa->ifa_address;
+
+		rcu_read_unlock();
+
+		/* The mask for the relevant bits. */
+		pmConf->filters[i].mask[0] = 0x00;
+		pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */
+		pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */
+		pmConf->filters[i].mask[3] = 0x00;
+		pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */
+		pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */
+
+		pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
+		i++;
+	}
+
+skip_arp:
+	if (adapter->wol & WAKE_MAGIC)
+		pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
+
+	pmConf->numFilters = i;
+
+	adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1);
+	adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof(
+								  *pmConf));
+	adapter->shared->devRead.pmConfDesc.confPA =
+		cpu_to_le64(adapter->pm_conf_pa);
+
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_PMCFG);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+
+	pci_save_state(pdev);
+	pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND),
+			adapter->wol);
+	pci_disable_device(pdev);
+	pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND));
+
+	return 0;
+}
+
+
+static int
+vmxnet3_resume(struct device *device)
+{
+	int err;
+	unsigned long flags;
+	struct pci_dev *pdev = to_pci_dev(device);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+	if (!netif_running(netdev))
+		return 0;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	err = pci_enable_device_mem(pdev);
+	if (err != 0)
+		return err;
+
+	pci_enable_wake(pdev, PCI_D0, 0);
+
+	vmxnet3_alloc_intr_resources(adapter);
+
+	/* During hibernate and suspend, device has to be reinitialized as the
+	 * device state need not be preserved.
+	 */
+
+	/* Need not check adapter state as other reset tasks cannot run during
+	 * device resume.
+	 */
+	spin_lock_irqsave(&adapter->cmd_lock, flags);
+	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_QUIESCE_DEV);
+	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+	vmxnet3_tq_cleanup_all(adapter);
+	vmxnet3_rq_cleanup_all(adapter);
+
+	vmxnet3_reset_dev(adapter);
+	err = vmxnet3_activate_dev(adapter);
+	if (err != 0) {
+		netdev_err(netdev,
+			   "failed to re-activate on resume, error: %d", err);
+		vmxnet3_force_close(adapter);
+		return err;
+	}
+	netif_device_attach(netdev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops vmxnet3_pm_ops = {
+	.suspend = vmxnet3_suspend,
+	.resume = vmxnet3_resume,
+	.freeze = vmxnet3_suspend,
+	.restore = vmxnet3_resume,
+};
+#endif
+
+static struct pci_driver vmxnet3_driver = {
+	.name		= vmxnet3_driver_name,
+	.id_table	= vmxnet3_pciid_table,
+	.probe		= vmxnet3_probe_device,
+	.remove		= vmxnet3_remove_device,
+	.shutdown	= vmxnet3_shutdown_device,
+#ifdef CONFIG_PM
+	.driver.pm	= &vmxnet3_pm_ops,
+#endif
+};
+
+
+static int __init
+vmxnet3_init_module(void)
+{
+	pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC,
+		VMXNET3_DRIVER_VERSION_REPORT);
+	return pci_register_driver(&vmxnet3_driver);
+}
+
+module_init(vmxnet3_init_module);
+
+
+static void
+vmxnet3_exit_module(void)
+{
+	pci_unregister_driver(&vmxnet3_driver);
+}
+
+module_exit(vmxnet3_exit_module);
+
+MODULE_AUTHOR("VMware, Inc.");
+MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING);