Neterion: New driver: Main entry points

diff -urpN patch_7/drivers/net/vxge/vxge-main.c patch_8/drivers/net/vxge/vxge-main.c
@@ -0,0 +1,5204 @@
+/******************************************************************************
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License (GPL), incorporated herein by reference.
+ * Drivers based on or derived from this code fall under the GPL and must
+ * retain the authorship, copyright and license notice.  This file is not
+ * a complete program and may only be used when the entire operating
+ * system is licensed under the GPL.
+ * See the file COPYING in this distribution for more information.
+ ******************************************************************************/
+/*******************************************************************************
+ * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
+ *              Virtualized Server Adapter.
+ * Copyright(c) 2002-2009 Neterion Inc.
+ ******************************************************************************/
+/*
+* The module loadable parameters that are supported by the driver and a brief
+* explanation of all the variables:
+* vlan_tag_strip:
+*	Strip VLAN Tag enable/disable. Instructs the device to remove
+*	the VLAN tag from all received tagged frames that are not
+*	replicated at the internal L2 switch.
+*		0 - Do not strip the VLAN tag.
+*		1 - Strip the VLAN tag.
+*
+* addr_learn_en:
+*	Enable Receive Traffic Steering using MAC destination address.
+*		0 - DISABLE
+*		1 - ENABLE
+*
+* lro:
+*	Enable Large Receive Offload (LRO)
+*		0 - DISABLE
+*		1 - ENABLE
+*
+* ring_blocks:
+*	Numbers of RxD blocks in the ring
+*		MIN - 1 and MAX - 128
+*
+* max_config_port:
+*	Maximum number of port to be supported.
+*		MIN -1 and MAX - 2
+*
+* fifo_indicate_max_pkts:
+*	Sets the maximum number of transmit frames to be processed within
+*	single interrupt.
+*		MIN - 1 and MAX - 65536
+*
+* ring_indicate_max_pkts:
+*	Sets the maximum number of received frames to be processed within
+*	single interrupt.
+*		MIN - 1 and MAX - 65536
+*
+* max_config_vpath:
+*	This configures the maximum no of VPATH configures for each
+* 	device function.
+*		MIN - 1 and MAX - 17
+*
+* max_config_dev:
+*	This configures maximum no of Device function to be enabled.
+*		MIN - 1 and MAX - 17
+*
+* intr_type:
+*	This configures the type of interrupt.
+*		0 - INTA
+*		1 - Reserved
+*		2 - MSIX
+*		3 - EMULATED_INTA
+*
+* exec_mode:
+*	This is set make enable the debug mode by default.
+*		0 - DISABLE
+*		1 - ENABLE
+*
+* rx_steering_type:
+*	This parameter is for configuring the receive side steering.
+*		0 - No steering
+*		1 - Reserved
+*		2 - RTH steering (default)
+*
+* tx_steering_type:
+* 	This parameter is for configuring the transmit steering.
+*		0 - No steering
+*		1 - Priority steering
+*		2 - Vlan steering
+*		3 - Multiqueue steering
+*		4 - Port steering (default)
+*
+* tx_pause_enable:
+*	This parameter enables pause frame generation.
+*		0 - Disable
+*		1 - Enable
+*
+* rx_pause_enable:
+*	This parameter enables response to received pause frames
+*		0 - Disable
+*		1 - Enable.
+*
+*/
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/if_vlan.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+
+#include <net/sock.h>
+#include <net/ip.h>
+
+#include <linux/ip.h>
+#include <linux/tcp.h>
+
+#include "vxge-main.h"
+#include "vxge-reg.h"
+
+#define VXGE_DRIVER_VERSION_MAJOR 0
+
+static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
+		{0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
+static int vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre);
+static void vxge_remove(struct pci_dev *pdev);
+
+static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
+						pci_channel_state_t state);
+static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev);
+static void vxge_io_resume(struct pci_dev *pdev);
+
+#ifdef CONFIG_PM
+static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state);
+static int vxge_pm_resume(struct pci_dev *pdev);
+#endif
+
+#define VXGE_PCI_DEVICE_ID_TITAN_3	0x66f3
+
+static struct pci_device_id vxge_id_table[] __devinitdata = {
+	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
+	PCI_ANY_ID},
+	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
+	PCI_ANY_ID},
+	{0}
+};
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("Titan family network driver");
+
+MODULE_DEVICE_TABLE(pci, vxge_id_table);
+
+static struct pci_error_handlers vxge_err_handler = {
+	.error_detected = vxge_io_error_detected,
+	.slot_reset = vxge_io_slot_reset,
+	.resume = vxge_io_resume,
+};
+
+static struct pci_driver vxge_driver = {
+	.name = VXGE_DRIVER_NAME,
+	.id_table = vxge_id_table,
+	.probe = vxge_probe,
+	.remove = __devexit_p(vxge_remove),
+#ifdef CONFIG_PM
+	.suspend = vxge_pm_suspend,
+	.resume = vxge_pm_resume,
+#endif
+
+	.err_handler = &vxge_err_handler,
+
+};
+
+VXGE_MODULE_PARAM_INT(vlan_tag_strip,
+	VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
+
+#if defined(CONFIG_XEN)
+VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_RTS_MAC_ENABLE);
+#else
+VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_RTS_MAC_DISABLE);
+#endif
+
+VXGE_MODULE_PARAM_INT(ring_indicate_max_pkts,
+	VXGE_HW_DEF_RING_INDICATE_MAX_PKTS);
+VXGE_MODULE_PARAM_INT(fifo_indicate_max_pkts, VXGE_FIFO_INDICATE_MAX_PKTS);
+VXGE_MODULE_PARAM_INT(ring_blocks, VXGE_HW_DEF_RING_BLOCKS);
+VXGE_MODULE_PARAM_INT(fifo_length, VXGE_DEF_FIFO_LENGTH);
+VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
+
+#if defined(HAVE_NETDEV_POLL)
+
+VXGE_MODULE_PARAM_INT(napi, VXGE_ENABLE_NAPI);
+
+#endif
+
+int netq = VXGE_NETQ_DISABLE;
+VXGE_MODULE_PARAM_INT(lro, VXGE_HW_LRO_DONT_AGGR_FWD_PKTS);
+VXGE_MODULE_PARAM_INT(rx_steering_type, RTH_STEERING);
+
+VXGE_MODULE_PARAM_INT(tx_steering_type, TX_MULTIQ_STEERING);
+
+VXGE_MODULE_PARAM_INT(lro_max_bytes, VXGE_LRO_MAX_BYTES);
+
+VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
+VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
+VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
+
+VXGE_MODULE_PARAM_INT(intr_type, MSI_X);
+
+VXGE_MODULE_PARAM_INT(exec_mode, VXGE_EXEC_MODE_DISABLE);
+
+VXGE_MODULE_PARAM_INT(tx_pause_enable, VXGE_PAUSE_FRM_ENABLE);
+VXGE_MODULE_PARAM_INT(rx_pause_enable, VXGE_PAUSE_FRM_ENABLE);
+
+static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
+	{[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
+
+module_param_array(bw_percentage, uint, NULL, 0);
+
+int config_dev_cnt = 0, total_dev_cnt = 0;
+int g_no_cpus;
+char g_serial_num[VXGE_HW_VPD_LENGTH + 1];
+char g_product_name[VXGE_HW_VPD_LENGTH + 1];
+unsigned int vpath_per_dev;
+
+#define VXGE_LL_MAX_FRAME_SIZE(dev) ((dev)->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE)
+
+struct vxge_dma_async_data *async_data;
+
+static inline int is_vxge_card_up(struct vxgedev *vdev)
+{
+	return test_bit(__VXGE_STATE_CARD_UP,
+			(unsigned long *) &vdev->state);
+}
+
+static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
+{
+	unsigned long flags = 0;
+	unsigned int got_tx;
+	struct sk_buff *skb_ptr = NULL;
+	struct sk_buff **temp, *head, *skb;
+
+	if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
+		vxge_hw_vpath_poll_tx(fifo->handle, &got_tx,
+				(void **)&skb_ptr);
+		spin_unlock_irqrestore(&fifo->tx_lock, flags);
+	}
+	/* free SKBs */
+	head = skb_ptr;
+	while (head) {
+		skb = head;
+		temp = (struct sk_buff **)&skb->cb;
+		head = *temp;
+		*temp = NULL;
+		dev_kfree_skb_irq(skb);
+	}
+}
+
+static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
+{
+	int i;
+
+	/* Complete all transmits */
+	for (i = 0; i < vdev->no_of_vpath; i++)
+		VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
+}
+
+static inline void VXGE_COMPLETE_VPATH_RX(struct vxge_ring *ring)
+{
+	unsigned int got_rx;
+
+	vxge_hw_vpath_poll_rx(ring->handle, &got_rx);
+}
+
+static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
+{
+	int i;
+
+	/* Complete all receives*/
+	for (i = 0; i < vdev->no_of_vpath; i++)
+		VXGE_COMPLETE_VPATH_RX(&vdev->vpaths[i].ring);
+}
+
+/*
+ * MultiQ manipulation helper functions
+ */
+void vxge_stop_all_tx_queue(struct vxgedev *vdev)
+{
+	int i;
+	struct net_device *dev = (struct net_device *) vdev->ndev;
+
+	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
+	}
+	netif_tx_stop_all_queues(dev);
+
+}
+
+void vxge_stop_tx_queue(struct vxge_fifo *fifo)
+{
+	struct net_device *dev = fifo->ndev;
+
+	struct netdev_queue *txq = NULL;
+	if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
+		txq = netdev_get_tx_queue(dev, fifo->driver_id);
+	else {
+		txq = netdev_get_tx_queue(dev, 0);
+		fifo->queue_state = VPATH_QUEUE_STOP;
+	}
+
+	netif_tx_stop_queue(txq);
+
+}
+
+void vxge_start_all_tx_queue(struct vxgedev *vdev)
+{
+	int i;
+	struct net_device *dev = (struct net_device *) vdev->ndev;
+
+	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
+	}
+	netif_tx_start_all_queues(dev);
+
+}
+
+void vxge_wake_all_tx_queue(struct vxgedev *vdev)
+{
+	int i;
+	struct net_device *dev = (struct net_device *) vdev->ndev;
+
+	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
+	}
+	netif_tx_wake_all_queues(dev);
+
+}
+
+void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
+{
+	struct net_device *dev = fifo->ndev;
+
+	int vpath_no = fifo->driver_id;
+	struct netdev_queue *txq = NULL;
+	if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
+		txq = netdev_get_tx_queue(dev, vpath_no);
+		if (netif_tx_queue_stopped(txq))
+			netif_tx_wake_queue(txq);
+	} else {
+		txq = netdev_get_tx_queue(dev, 0);
+		if (fifo->queue_state == VPATH_QUEUE_STOP)
+			if (netif_tx_queue_stopped(txq)) {
+				fifo->queue_state = VPATH_QUEUE_START;
+				netif_tx_wake_queue(txq);
+			}
+	}
+
+}
+
+/*
+ * vxge_callback_link_up
+ *
+ * This function called during interrupt context to notify link up state
+ * change.
+ */
+void
+vxge_callback_link_up(struct __hw_device *devh, void *userdata)
+{
+	struct net_device *dev = (struct net_device *)userdata;
+	struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		vdev->ndev->name, __func__, __LINE__);
+	printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
+	vdev->stats.link_up++;
+
+	netif_carrier_on(vdev->ndev);
+	vxge_wake_all_tx_queue(vdev);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n", vdev->ndev->name,
+		__func__, __LINE__);
+}
+
+/*
+ * vxge_callback_link_down
+ *
+ * This function called during interrupt context to notify link down state
+ * change.
+ */
+void
+vxge_callback_link_down(struct __hw_device *devh, void *userdata)
+{
+	struct net_device *dev = (struct net_device *)userdata;
+	struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d\n", vdev->ndev->name, __func__,
+		__LINE__);
+	printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
+
+	vdev->stats.link_down++;
+	netif_carrier_off(vdev->ndev);
+	vxge_stop_all_tx_queue(vdev);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n", vdev->ndev->name,
+		__func__, __LINE__);
+}
+
+/*
+ * vxge_rx_alloc
+ *
+ * Allocate SKB.
+ */
+struct sk_buff*
+vxge_rx_alloc(void *dtrh, struct vxge_ring *ring,
+	const int skb_size)
+{
+	struct net_device    *dev;
+	struct sk_buff       *skb;
+	struct vxge_rx_priv *rx_priv;
+
+	dev = ring->ndev;
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+
+	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
+
+	/* try to allocate skb first. this one may fail */
+	skb = netdev_alloc_skb(dev, skb_size +
+	VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
+	if (skb == NULL) {
+		vxge_debug_mem(VXGE_ERR,
+			"%s: out of memory to allocate SKB",
+			dev->name);
+		ring->stats.skb_alloc_fail++;
+		return NULL;
+	}
+
+	vxge_debug_mem(VXGE_TRACE,
+		"%s: %s:%d  Skb : 0x%llx\n", ring->ndev->name,
+		__func__, __LINE__, (u64)skb);
+
+	skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
+
+	rx_priv->skb = skb;
+	rx_priv->data_size = skb_size;
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d   Exiting...\n", ring->ndev->name,
+		__func__, __LINE__);
+
+	return skb;
+}
+
+/*
+ * vxge_rx_free
+ */
+void
+vxge_rx_free(void *dtrh)
+{
+	struct vxge_rx_priv *rx_priv;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
+	dev_kfree_skb(rx_priv->skb);
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+}
+
+/*
+ * vxge_rx_map
+ */
+int
+vxge_rx_map(void *dtrh, struct vxge_ring *ring)
+{
+	struct vxge_rx_priv *rx_priv;
+	dma_addr_t dma_addr;
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
+
+	dma_addr =
+
+		pci_map_single(ring->pdev, rx_priv->skb->data,
+				rx_priv->data_size, PCI_DMA_FROMDEVICE);
+
+	if (dma_addr == 0) {
+		ring->stats.pci_map_fail++;
+		return -EIO;
+	}
+	vxge_debug_mem(VXGE_TRACE,
+		"%s: %s:%d  1 buffer mode dma_addr = 0x%llx\n",
+		ring->ndev->name, __func__, __LINE__, (u64)dma_addr);
+	vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
+
+	rx_priv->data_dma = dma_addr;
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+
+	return 0;
+}
+
+/*
+ * vxge_rx_unmap
+ */
+
+void
+vxge_rx_unmap(struct vxge_ring *ring, dma_addr_t data_dma,
+		dma_addr_t data_size)
+{
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+
+	pci_unmap_single(ring->pdev, data_dma, data_size, PCI_DMA_FROMDEVICE);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+}
+
+#define RX_FOR_DEVICE	1
+#define RX_FOR_CPU	2
+
+/*
+ * vxge_rx_sync
+ */
+void
+vxge_rx_sync(dma_addr_t data_dma, dma_addr_t data_size,
+	struct vxge_ring *ring, int flags)
+{
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+
+	if (flags == RX_FOR_CPU) {
+		pci_dma_sync_single_for_cpu(ring->pdev,
+		    data_dma, data_size, PCI_DMA_FROMDEVICE);
+	} else if (flags == RX_FOR_DEVICE) {
+		pci_dma_sync_single_for_device(ring->pdev,
+			data_dma, data_size, PCI_DMA_FROMDEVICE);
+	}
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+}
+
+/*
+ * vxge_rx_initial_replenish
+ * @dtrh: DTR handle to operate
+ * @userdata: channel's userdata, points to vdev usually
+ *
+ * Allocation of RxD as an initial replenish procedure.
+ */
+enum vxge_hw_status
+vxge_rx_initial_replenish(void *dtrh, u32 index,
+	void *userdata, enum vxge_hw_reopen reopen)
+{
+	struct vxge_ring *ring = (struct vxge_ring *)userdata;
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+	if (vxge_rx_alloc(dtrh, ring,
+			  VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
+		return VXGE_HW_FAIL;
+
+	if (vxge_rx_map(dtrh, ring)) {
+		vxge_rx_free(dtrh);
+		return VXGE_HW_FAIL;
+	}
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+
+	return VXGE_HW_OK;
+}
+
+static inline void
+vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
+	int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
+{
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+			ring->ndev->name, __func__, __LINE__);
+
+	skb->protocol = eth_type_trans(skb, ring->ndev);
+
+	ring->stats.rx_frms++;
+	ring->stats.rx_bytes += pkt_length;
+
+	if (skb->pkt_type == PACKET_MULTICAST)
+		ring->stats.rx_mcast++;
+
+	vxge_debug_rx(VXGE_TRACE,
+		"%s: %s:%d  skb protocol = %d\n",
+		ring->ndev->name, __func__, __LINE__,
+		skb->protocol);
+
+	if (ring->lro_enable) {
+
+		if (ring->vlgrp && ext_info->vlan &&
+			(ring->vlan_tag_strip ==
+				VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
+			lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb,
+				ring->vlgrp, ext_info->vlan, ext_info);
+		else
+			lro_receive_skb(&ring->lro_mgr, skb,
+				(void *)ext_info);
+
+	} else {
+
+		if (ring->vlgrp && vlan &&
+			(ring->vlan_tag_strip ==
+				VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)) {
+			if (ring->napi_enable)
+				vlan_hwaccel_receive_skb(skb, ring->vlgrp,
+							vlan);
+			else
+				vlan_hwaccel_rx(skb, ring->vlgrp, vlan);
+		} else {
+
+			{
+				/* It is an ARP packet, send it to
+				 * the Linux stack */
+				memset(skb->cb, 0, sizeof(skb->cb));
+
+				if (ring->napi_enable)
+					netif_receive_skb(skb);
+				else
+					netif_rx(skb);
+			}
+		}
+	}
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+}
+
+static inline void vxge_re_pre_post(void *dtr,
+	struct vxge_ring *ring, struct vxge_rx_priv *rx_priv)
+{
+	vxge_rx_sync(rx_priv->data_dma, rx_priv->data_size,
+		ring, RX_FOR_DEVICE);
+	vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
+	vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
+}
+
+static inline void vxge_post(int *dtr_cnt, void **first_dtr,
+	void *post_dtr, struct __hw_ring *ringh)
+{
+	int dtr_count = *dtr_cnt;
+	if ((*dtr_cnt % XGE_HW_RXSYNC_FREQ_CNT) == 0) {
+		if (*first_dtr) {
+			vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
+			    *first_dtr = NULL;
+		}
+		*first_dtr = post_dtr;
+	} else
+		vxge_hw_ring_rxd_post_post(ringh, post_dtr);
+	dtr_count++;
+	*dtr_cnt = dtr_count;
+}
+
+#ifdef VXGE_RX_ERR_DBG
+void vxge_dump_packet(struct sk_buff *skb, int pkt_length)
+{
+	int i = 0, j;
+	u8 *ptr = skb->data;
+
+	printk(KERN_CRIT "\n Packet contents : Length = %d\n", pkt_length);
+	for (j = 0; j < pkt_length; j += 2, i += 2) {
+		printk(KERN_CRIT "%02x%02x  ", *(ptr + j), *(ptr + j + 1));
+		if (!((i + 2) % 16))
+			printk("\n");
+	}
+
+}
+#endif
+
+/*
+ * vxge_rx_1b_compl
+ * @channel:
+ * @userdata:
+ *
+ * If the interrupt is because of a received frame or if the receive ring
+ * contains fresh as yet un-processed frames, this function is called.
+ */
+enum vxge_hw_status
+vxge_rx_1b_compl(struct __hw_ring *ringh, void *dtr,
+	u8 t_code, void *userdata)
+{
+	struct vxge_ring *ring = (struct vxge_ring *)userdata;
+	struct  net_device *dev = ring->ndev;
+	unsigned int dma_sizes;
+	void *first_dtr = NULL;
+	int dtr_cnt = 0;
+	int data_size;
+	dma_addr_t data_dma;
+	int pkt_length;
+	struct sk_buff *skb;
+	struct vxge_rx_priv *rx_priv;
+	struct vxge_hw_ring_rxd_info ext_info;
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+		ring->ndev->name, __func__, __LINE__);
+	ring->pkts_processed = 0;
+
+	vxge_hw_ring_replenish(ringh, VXGE_HW_OPEN_NORMAL, 0);
+
+	do {
+		rx_priv = vxge_hw_ring_rxd_private_get(dtr);
+		skb = rx_priv->skb;
+		data_size = rx_priv->data_size;
+		data_dma = rx_priv->data_dma;
+
+		vxge_debug_rx(VXGE_TRACE,
+			"%s: %s:%d  skb = 0x%llx\n",
+			ring->ndev->name, __func__,
+			__LINE__, (u64)skb);
+
+		vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
+		pkt_length = dma_sizes;
+
+		vxge_debug_rx(VXGE_TRACE,
+			"%s: %s:%d  Packet Length = %d\n",
+			ring->ndev->name, __func__,
+			__LINE__, pkt_length);
+
+		vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
+
+		/* check skb validity */
+		vxge_assert(skb);
+
+		prefetch((char *)skb + L1_CACHE_BYTES);
+		if (unlikely(t_code)) {
+
+#ifdef VXGE_RX_ERR_DBG
+			if (t_code == VXGE_HW_RING_T_CODE_L2_FRM_ERR)
+				vxge_dump_packet(skb, pkt_length);
+#endif
+
+			if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
+				VXGE_HW_OK) {
+
+				ring->stats.rx_errors++;
+				vxge_debug_rx(VXGE_TRACE,
+					"%s: %s :%d Rx T_code is %d \n",
+					ring->ndev->name, __func__,
+					__LINE__, t_code);
+
+				/* If the t_code is not supported and if the
+				 * t_code is other than 0x5 (unparseable packet
+				 * such as unknown UPV6 header), Drop it !!!
+				 */
+				vxge_re_pre_post(dtr, ring, rx_priv);
+
+				vxge_post(&dtr_cnt, &first_dtr, dtr,
+					ringh);
+				ring->stats.rx_dropped++;
+				continue;
+			}
+		}
+
+		if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
+
+			if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
+
+				if (!vxge_rx_map(dtr, ring)) {
+					skb_put(skb, pkt_length);
+					vxge_rx_unmap(ring,
+						data_dma, data_size);
+					vxge_hw_ring_rxd_pre_post(ringh,
+						dtr);
+					vxge_post(&dtr_cnt, &first_dtr, dtr,
+						ringh);
+				} else {
+					vxge_rx_free(dtr);
+					rx_priv->skb = skb;
+					rx_priv->data_size = data_size;
+					vxge_re_pre_post(dtr, ring, rx_priv);
+
+					vxge_post(&dtr_cnt, &first_dtr, dtr,
+						ringh);
+					ring->stats.rx_dropped++;
+					break;
+				}
+			} else {
+				vxge_re_pre_post(dtr, ring, rx_priv);
+
+				vxge_post(&dtr_cnt, &first_dtr, dtr,
+					ringh);
+				ring->stats.rx_dropped++;
+				break;
+			}
+		} else {
+			struct sk_buff *skb_up;
+
+			skb_up = netdev_alloc_skb(dev, pkt_length +
+				VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
+			if (skb_up != NULL) {
+				skb_reserve(skb_up,
+				    VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
+
+				vxge_rx_sync(data_dma, data_size,
+					ring, RX_FOR_CPU);
+
+				vxge_debug_mem(VXGE_TRACE,
+					"%s: %s:%d  skb_up = 0x%llx\n",
+					ring->ndev->name, __func__,
+					__LINE__, (u64)skb);
+				memcpy(skb_up->data, skb->data, pkt_length);
+
+				vxge_re_pre_post(dtr, ring, rx_priv);
+
+				vxge_post(&dtr_cnt, &first_dtr, dtr,
+					ringh);
+				/* will netif_rx small SKB instead */
+				skb = skb_up;
+				skb_put(skb, pkt_length);
+			} else {
+				vxge_re_pre_post(dtr, ring, rx_priv);
+
+				vxge_post(&dtr_cnt, &first_dtr, dtr,
+					ringh);
+				vxge_debug_rx(VXGE_ERR,
+					"%s: vxge_rx_1b_compl: out of "
+					"memory",
+					dev->name);
+				ring->stats.skb_alloc_fail++;
+				break;
+			}
+		}
+
+		if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
+		    !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
+		    ring->rx_csum && /* Offload Rx side CSUM */
+		    ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
+		    ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK) {
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+		} else
+			skb->ip_summed = CHECKSUM_NONE;
+
+		vxge_rx_complete(ring, skb, ext_info.vlan,
+			pkt_length, &ext_info);
+
+		if (ring->napi_enable) {
+
+			/* NEW NAPI */
+			ring->budget--;
+			ring->pkts_processed++;
+			if (!ring->budget)
+				break;
+
+		}
+	} while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
+		&t_code) == VXGE_HW_OK);
+
+	if (first_dtr)
+		vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
+
+	dev->last_rx = jiffies;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+				"%s:%d  Exiting...\n",
+				__func__, __LINE__);
+	if (ring->lro_enable)
+
+		lro_flush_all(&ring->lro_mgr);
+
+	return VXGE_HW_OK;
+}
+
+/*
+ * vxge_xmit_compl
+ * @channel:
+ * @userdata:
+ *
+ * If an interrupt was raised to indicate DMA complete of the Tx packet,
+ * this function is called. It identifies the last TxD whose buffer was
+ * freed and frees all skbs whose data have already DMA'ed into the NICs
+ * internal memory.
+ */
+enum vxge_hw_status
+vxge_xmit_compl(struct __hw_fifo *fifo_hw, void *dtr,
+	void *dtr_priv, enum vxge_hw_fifo_tcode t_code, void *userdata,
+	void **skb_ptr)
+{
+	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
+	struct sk_buff *skb, *head = NULL;
+	struct sk_buff **temp;
+	int pkt_cnt = 0;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d Entered....\n", __func__,
+		__LINE__);
+
+	do {
+		int frg_cnt;
+		skb_frag_t *frag;
+		int i = 0, j;
+		struct vxge_tx_priv *txd_priv =
+			vxge_hw_fifo_txdl_private_get(dtr);
+
+		skb = txd_priv->skb;
+		frg_cnt = skb_shinfo(skb)->nr_frags;
+		frag = &skb_shinfo(skb)->frags[0];
+
+		vxge_debug_tx(VXGE_TRACE,
+				"%s: %s:%d fifo_hw = 0x%llx dtr = 0x%llx \
+				dtr_priv = 0x%llx tcode = 0x%x\n",
+				fifo->ndev->name, __func__, __LINE__,
+				(u64)fifo_hw, (u64)dtr, (u64)dtr_priv, t_code);
+		/* check skb validity */
+		vxge_assert(skb);
+		vxge_debug_tx(VXGE_TRACE,
+			"%s: %s:%d skb = 0x%llx itxd_priv = 0x%llx \
+			frg_cnt = %d\n",
+			fifo->ndev->name, __func__, __LINE__,
+			(u64)skb, (u64)txd_priv, frg_cnt);
+		if (unlikely(t_code)) {
+			fifo->stats.tx_errors++;
+			vxge_debug_tx(VXGE_ERR,
+				"%s: tx: dtr 0x%llx completed due to "
+				"error t_code %01x",
+				fifo->ndev->name, (unsigned long long)
+				(ulong_t)dtr, t_code);
+
+			vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
+		}
+
+		/*  for unfragmented skb */
+		pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
+				skb_headlen(skb), PCI_DMA_TODEVICE);
+
+		for (j = 0; j < frg_cnt; j++) {
+			pci_unmap_page(fifo->pdev,
+					txd_priv->dma_buffers[i++],
+					frag->size, PCI_DMA_TODEVICE);
+			frag += 1;
+		}
+
+		vxge_hw_fifo_txdl_free(fifo_hw, dtr);
+
+		/* Updating the statistics block */
+		fifo->stats.tx_frms++;
+		fifo->stats.tx_bytes += skb->len;
+
+		temp = (struct sk_buff **)&skb->cb;
+		*temp = head;
+		head = skb;
+
+		pkt_cnt++;
+		if (pkt_cnt > fifo->indicate_max_pkts)
+			break;
+
+	} while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
+				&dtr, &dtr_priv, &t_code) == VXGE_HW_OK);
+
+	vxge_wake_tx_queue(fifo, skb);
+
+	if (skb_ptr)
+		*skb_ptr = (void *) head;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+				"%s: %s:%d  Exiting...\n",
+				fifo->ndev->name, __func__, __LINE__);
+	return VXGE_HW_OK;
+}
+
+/* select a vpath to trasmit the packet */
+u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
+	int *do_lock)
+{
+	u16 queue_len, counter = 0;
+	if (skb->protocol == htons(ETH_P_IP)) {
+		struct iphdr *ip;
+		struct tcphdr *th;
+
+		ip = ip_hdr(skb);
+
+		if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
+			th = (struct tcphdr *)(((unsigned char *)ip) +
+					ip->ihl*4);
+
+			queue_len = vdev->no_of_vpath;
+			counter = (ntohs(th->source) +
+				ntohs(th->dest)) &
+				vdev->vpath_selector[queue_len - 1];
+			if (counter >= queue_len)
+				counter = queue_len - 1;
+
+			if (ip->protocol == IPPROTO_UDP) {
+#ifdef NETIF_F_LLTX
+				*do_lock = 0;
+#endif
+			}
+		}
+	}
+	return counter;
+}
+
+#if defined(CONFIG_XEN)
+
+enum vxge_hw_status vxge_search_mac_addr_in_list(struct vxge_vpath *vpath,
+					u64 del_mac)
+{
+	struct vxge_list *entry, *next;
+	vxge_list_for_each_safe(entry, next, &vpath->mac_addr_list) {
+		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
+			return TRUE;
+	}
+	return FALSE;
+}
+
+int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
+{
+	struct macInfo mac_info;
+	u8 *mac_address = NULL;
+	u64 mac_addr = 0, vpath_vector = 0;
+	int vpath_idx = 0;
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct vxge_vpath *vpath = NULL;
+	struct __hw_device *hldev;
+
+	hldev = (struct __hw_device *) pci_get_drvdata(vdev->pdev);
+
+	mac_address = (u8 *)&mac_addr;
+	memcpy(mac_address, mac_header, ETH_ALEN);
+
+	/* Is this mac address already in the list? */
+	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
+		vpath = &vdev->vpaths[vpath_idx];
+		if (vxge_search_mac_addr_in_list(vpath, mac_addr))
+			return vpath_idx;
+	}
+
+	memset(&mac_info, 0, sizeof(struct macInfo));
+	memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
+
+	/* Any vpath has room to add mac address to its da table? */
+	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
+		vpath = &vdev->vpaths[vpath_idx];
+		if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
+			/* Add this mac address to this vpath */
+			mac_info.vpath_no = vpath_idx;
+			mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
+			status = vxge_add_mac_addr(vdev, &mac_info);
+			if (status != VXGE_HW_OK)
+				return -EPERM;
+			return vpath_idx;
+		}
+	}
+
+	mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
+	vpath_idx = 0;
+	mac_info.vpath_no = vpath_idx;
+	/* Is the first vpath already selected as catch-basin ? */
+	vpath = &vdev->vpaths[vpath_idx];
+	if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
+		/* Add this mac address to this vpath */
+		if (FALSE == vxge_mac_list_add(vpath, &mac_info))
+			return -EPERM;
+		return vpath_idx;
+	}
+
+	/* Select first vpath as catch-basin */
+	vpath_vector = vxge_mBIT(vpath->device_id);
+	status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
+				vxge_hw_mgmt_reg_type_mrpcim,
+				0,
+				(ulong_t)vxge_offsetof(
+					struct vxge_hw_mrpcim_reg,
+					rts_mgr_cbasin_cfg),
+				vpath_vector);
+	if (status != VXGE_HW_OK) {
+		vxge_debug_tx(VXGE_ERR,
+			"%s: Unable to set the vpath-%d in catch-basin mode",
+			VXGE_DRIVER_NAME, vpath->device_id);
+		return -EPERM;
+	}
+
+	if (FALSE == vxge_mac_list_add(vpath, &mac_info))
+		return -EPERM;
+
+	return vpath_idx;
+}
+#endif
+
+/*
+ * vxge_xmit
+ * @skb : the socket buffer containing the Tx data.
+ * @dev : device pointer.
+ *
+ * This function is the Tx entry point of the driver. Neterion NIC supports
+ * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
+ * NOTE: when device cant queue the pkt, just the trans_start variable will
+ * not be upadted.
+*/
+static int
+vxge_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct vxge_fifo *fifo = NULL;
+	void *dtr_priv;
+	void *dtr = NULL;
+	struct vxgedev *vdev = NULL;
+	enum vxge_hw_status status;
+	int frg_cnt, first_frg_len;
+	skb_frag_t *frag;
+	int i = 0, j = 0, avail;
+	u64 dma_pointer;
+	struct vxge_tx_priv *txdl_priv = NULL;
+	struct __hw_fifo *fifo_hw;
+
+	u32 max_mss = 0x0;
+
+	int offload_type;
+	unsigned long flags = 0;
+	int vpath_no = 0;
+	int do_spin_tx_lock = 1;
+
+	vxge_assert(dev);
+	vxge_assert(netdev_priv(dev));
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+			dev->name, __func__, __LINE__);
+
+	/* A buffer with no data will be dropped */
+	if (unlikely(skb->len <= 0)) {
+		vxge_debug_tx(VXGE_ERR,
+			"%s: Buffer has no data..\n", dev->name);
+		goto _exit2;
+	}
+
+	vdev = (struct vxgedev *)netdev_priv(dev);
+
+	if (unlikely(!is_vxge_card_up(vdev))) {
+		vxge_debug_tx(VXGE_ERR,
+			"%s: vdev not initialized\n", dev->name);
+		goto _exit2;
+	}
+
+#if defined(CONFIG_XEN)
+	if (vdev->config.addr_learn_en) {
+		vpath_no = vxge_learn_mac(vdev, skb->data +
+						ETH_ALEN);
+		if (vpath_no == -EPERM) {
+			vxge_debug_tx(VXGE_ERR,
+				"%s: Failed to store the mac address..\n",
+				dev->name);
+			goto _exit2;
+		}
+	}
+#endif
+
+	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
+		vpath_no = skb_get_queue_mapping(skb);
+	else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
+		vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
+
+	vxge_debug_tx(VXGE_TRACE,
+		"%s: vpath_no= %d\n", dev->name, vpath_no);
+
+	if (vpath_no >= vdev->no_of_vpath)
+		vpath_no = 0;
+
+	fifo = &vdev->vpaths[vpath_no].fifo;
+	fifo_hw = fifo->handle;
+
+	if (do_spin_tx_lock)
+		spin_lock_irqsave(&fifo->tx_lock, flags);
+	else {
+		if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
+			return NETDEV_TX_LOCKED;
+	}
+
+	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
+		if (netif_subqueue_stopped(dev, skb)) {
+			spin_unlock_irqrestore(&fifo->tx_lock, flags);
+			return NETDEV_TX_BUSY;
+		}
+	} else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
+		if (netif_queue_stopped(dev)) {
+			spin_unlock_irqrestore(&fifo->tx_lock, flags);
+			return NETDEV_TX_BUSY;
+		}
+	}
+	avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
+	if (avail == 0) {
+		vxge_debug_tx(VXGE_ERR,
+				"%s: No free TXDs available\n", dev->name);
+		fifo->stats.txd_not_free++;
+		vxge_stop_tx_queue(fifo);
+		goto _exit2;
+	}
+
+	status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
+	if (unlikely(status != VXGE_HW_OK)) {
+		vxge_debug_tx(VXGE_ERR,
+		   "%s: Out of descriptors .", dev->name);
+		fifo->stats.txd_out_of_desc++;
+		vxge_stop_tx_queue(fifo);
+		goto _exit2;
+	}
+
+	vxge_debug_tx(VXGE_TRACE,
+		"%s: %s:%d fifo_hw = 0x%llx dtr = 0x%llx dtr_priv = 0x%llx\n",
+		dev->name, __func__, __LINE__,
+		(u64)fifo_hw, (u64)dtr, (u64)dtr_priv);
+
+	if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
+		u16 vlan_tag = vlan_tx_tag_get(skb);
+		vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
+	}
+
+	first_frg_len = skb_headlen(skb);
+
+	dma_pointer =
+
+		pci_map_single(fifo->pdev,
+			skb->data, first_frg_len, PCI_DMA_TODEVICE);
+
+	if (unlikely(vxge_do_pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
+		vxge_hw_fifo_txdl_free(fifo_hw, dtr);
+		vxge_stop_tx_queue(fifo);
+		fifo->stats.pci_map_fail++;
+		goto _exit2;
+	}
+
+	txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
+	txdl_priv->skb = skb;
+	txdl_priv->dma_buffers[j] = dma_pointer;
+
+	frg_cnt = skb_shinfo(skb)->nr_frags;
+	vxge_debug_tx(VXGE_TRACE,
+			"%s: %s:%d skb = 0x%llx txdl_priv = 0x%llx \
+			frag_cnt = %d dma_pointer = 0x%llx\n", dev->name,
+			__func__, __LINE__, (u64)skb, (u64)txdl_priv,
+			frg_cnt, dma_pointer);
+
+	vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
+		first_frg_len);
+
+	frag = &skb_shinfo(skb)->frags[0];
+	for (i = 0; i < frg_cnt; i++) {
+		/* ignore 0 length fragment */
+		if (!frag->size)
+			continue;
+
+		dma_pointer =
+
+			(u64)pci_map_page(
+				fifo->pdev, frag->page,
+				frag->page_offset, frag->size,
+				PCI_DMA_TODEVICE);
+
+		if (unlikely(vxge_do_pci_dma_mapping_error(
+				fifo->pdev,
+				dma_pointer)))
+			goto _exit0;
+		vxge_debug_tx(VXGE_TRACE,
+				"%s: %s:%d frag = %d dma_pointer = 0x%llx\n",
+				dev->name, __func__, __LINE__, i,
+				dma_pointer);
+
+		txdl_priv->dma_buffers[j] = dma_pointer;
+		vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr,
+			j++, dma_pointer, frag->size);
+		frag += 1;
+	}
+
+	offload_type = vxge_offload_type(skb);
+
+	if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
+
+		int mss = vxge_tcp_mss(skb);
+		if (mss) {
+			max_mss = dev->mtu + ETH_HLEN -
+				VXGE_HW_TCPIP_HEADER_MAX_SIZE;
+			if (mss > max_mss)
+				mss = max_mss;
+			vxge_debug_tx(VXGE_TRACE,
+					"%s: %s:%d mss = %d\n",
+					dev->name, __func__,
+					__LINE__, mss);
+			vxge_hw_fifo_txdl_mss_set(dtr, mss);
+		} else {
+			vxge_assert(skb->len <=
+				dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
+			vxge_assert(0);
+			goto _exit1;
+		}
+	}
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		vxge_hw_fifo_txdl_cksum_set_bits(dtr,
+					VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
+					VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
+					VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
+
+	vxge_hw_fifo_txdl_post(fifo_hw, dtr);
+	dev->trans_start = jiffies;
+	spin_unlock_irqrestore(&fifo->tx_lock, flags);
+
+	VXGE_COMPLETE_VPATH_TX(fifo);
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		dev->name, __func__, __LINE__);
+	return 0;
+
+_exit0:
+	vxge_debug_tx(VXGE_TRACE,
+		"%s: pci_map_page failed",
+		dev->name);
+
+_exit1:
+	j = 0;
+	frag = &skb_shinfo(skb)->frags[0];
+
+	pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
+			skb_headlen(skb), PCI_DMA_TODEVICE);
+
+	for (; j < i; j++) {
+		pci_unmap_page(fifo->pdev,
+			txdl_priv->dma_buffers[j],
+			frag->size,
+			PCI_DMA_TODEVICE);
+		frag += 1;
+	}
+
+	vxge_hw_fifo_txdl_free(fifo_hw, dtr);
+_exit2:
+	dev_kfree_skb(skb);
+	if (fifo) {
+		spin_unlock_irqrestore(&fifo->tx_lock, flags);
+		VXGE_COMPLETE_VPATH_TX(fifo);
+	}
+
+	return 0;
+}
+
+/*
+ * vxge_rx_term
+ *
+ * Function will be called by hw function to abort all outstanding receive
+ * descriptors.
+ */
+static void
+vxge_rx_term(void *dtrh,
+	enum vxge_hw_rxd_state state, void *userdata,
+	enum vxge_hw_reopen reopen)
+{
+	struct vxge_ring *ring = (struct vxge_ring *)userdata;
+	struct vxge_rx_priv *rx_priv =
+		vxge_hw_ring_rxd_private_get(dtrh);
+
+	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d\n",
+			ring->ndev->name, __func__, __LINE__);
+	if (state != VXGE_HW_RXD_STATE_POSTED)
+		return;
+
+	vxge_rx_unmap(ring, rx_priv->data_dma, rx_priv->data_size);
+	vxge_rx_free(dtrh);
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s: %s:%d  Exiting...\n",
+		ring->ndev->name, __func__, __LINE__);
+}
+
+/*
+ * vxge_tx_term
+ *
+ * Function will be called to abort all outstanding tx descriptors
+ */
+static void
+vxge_tx_term(void *dtrh, void *dtr_priv,
+	enum vxge_hw_txdl_state state, void *userdata,
+	enum vxge_hw_reopen reopen)
+{
+	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
+	skb_frag_t *frag;
+	int i = 0, j, frg_cnt;
+	struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
+	struct sk_buff *skb = txd_priv->skb;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+
+	if (state != VXGE_HW_TXDL_STATE_POSTED)
+		return;
+
+	/* check skb validity */
+	vxge_assert(skb);
+	frg_cnt = skb_shinfo(skb)->nr_frags;
+	frag = &skb_shinfo(skb)->frags[0];
+
+	/*  for unfragmented skb */
+	pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
+		skb_headlen(skb), PCI_DMA_TODEVICE);
+
+	for (j = 0; j < frg_cnt; j++) {
+		pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
+			       frag->size, PCI_DMA_TODEVICE);
+		frag += 1;
+	}
+
+	dev_kfree_skb(skb);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+}
+
+/*
+ * vxge_set_multicast
+ * @dev: pointer to the device structure
+ *
+ * Entry point for multicast address enable/disable
+ * This function is a driver entry point which gets called by the kernel
+ * whenever multicast addresses must be enabled/disabled. This also gets
+ * called to set/reset promiscuous mode. Depending on the deivce flag, we
+ * determine, if multicast address must be enabled or if promiscuous mode
+ * is to be disabled etc.
+ */
+static void vxge_set_multicast(struct net_device *dev)
+{
+	struct dev_mc_list *mclist;
+	struct vxgedev *vdev;
+	int i, mcast_cnt = 0;
+	struct __hw_device  *hldev;
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct macInfo mac_info;
+	int vpath_idx = 0;
+	struct vxge_mac_addrs *mac_entry;
+	struct vxge_list *list_head;
+	struct vxge_list *entry, *next;
+	u8 *mac_address = NULL;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+	vxge_assert(dev);
+	vxge_assert(netdev_priv(dev));
+
+	vdev = (struct vxgedev *)netdev_priv(dev);
+	hldev = (struct __hw_device  *)vdev->devh;
+
+	if (unlikely(!is_vxge_card_up(vdev)))
+		return;
+
+	if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
+		for (i = 0; i < vdev->no_of_vpath; i++) {
+			vxge_assert(vdev->vpaths[i].is_open);
+			status = vxge_hw_vpath_mcast_enable(
+						vdev->vpaths[i].handle);
+			vdev->all_multi_flg = 1;
+		}
+	} else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
+		for (i = 0; i < vdev->no_of_vpath; i++) {
+			vxge_assert(vdev->vpaths[i].is_open);
+			status = vxge_hw_vpath_mcast_disable(
+						vdev->vpaths[i].handle);
+			vdev->all_multi_flg = 1;
+		}
+	}
+
+	if (status != VXGE_HW_OK)
+		vxge_debug_init(VXGE_ERR,
+			"failed to %s multicast, status %d",
+			dev->flags & IFF_ALLMULTI ?
+			"enable" : "disable", status);
+
+	if (!vdev->config.addr_learn_en) {
+		if (dev->flags & IFF_PROMISC) {
+			for (i = 0; i < vdev->no_of_vpath; i++) {
+				vxge_assert(vdev->vpaths[i].is_open);
+				status = vxge_hw_vpath_promisc_enable(
+						vdev->vpaths[i].handle);
+			}
+		} else {
+			for (i = 0; i < vdev->no_of_vpath; i++) {
+				vxge_assert(vdev->vpaths[i].is_open);
+				status = vxge_hw_vpath_promisc_disable(
+						vdev->vpaths[i].handle);
+			}
+		}
+	}
+
+	memset(&mac_info, 0, sizeof(struct macInfo));
+	/* Update individual M_CAST address list */
+	if ((!vdev->all_multi_flg) && dev->mc_count) {
+
+		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
+		list_head = &vdev->vpaths[0].mac_addr_list;
+		if ((dev->mc_count +
+			(vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
+				vdev->vpaths[0].max_mac_addr_cnt)
+			goto _set_all_mcast;
+
+		/* Delete previous MC's */
+		for (i = 0; i < mcast_cnt; i++) {
+			mac_entry = (struct vxge_mac_addrs *)
+					vxge_list_first_get(list_head);
+
+			vxge_list_for_each_safe(entry, next, list_head) {
+
+				mac_entry = (struct vxge_mac_addrs *) entry;
+				/* Copy the mac address to delete */
+				mac_address = (u8 *)&mac_entry->macaddr;
+				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
+
+				/* Is this a multicast address */
+				if (0x01 & mac_info.macaddr[0]) {
+					for (vpath_idx = 0; vpath_idx <
+						vdev->no_of_vpath;
+						vpath_idx++) {
+						mac_info.vpath_no = vpath_idx;
+						status = vxge_del_mac_addr(
+								vdev,
+								&mac_info);
+					}
+				}
+
+			}
+		}
+
+		/* Add new ones */
+		for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
+			i++, mclist = mclist->next) {
+
+			memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
+			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
+					vpath_idx++) {
+				mac_info.vpath_no = vpath_idx;
+				mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
+				status = vxge_add_mac_addr(vdev, &mac_info);
+				if (status != VXGE_HW_OK) {
+					vxge_debug_init(VXGE_ERR,
+						"%s:%d Setting individual \
+						multicast address failed",
+						__func__, __LINE__);
+					goto _set_all_mcast;
+				}
+			}
+		}
+
+		return;
+_set_all_mcast:
+		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
+		/* Delete previous MC's */
+		for (i = 0; i < mcast_cnt; i++) {
+
+			vxge_list_for_each_safe(entry, next, list_head) {
+
+				mac_entry = (struct vxge_mac_addrs *) entry;
+				/* Copy the mac address to delete */
+				mac_address = (u8 *)&mac_entry->macaddr;
+				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
+
+				/* Is this a multicast address */
+				if (0x01 & mac_info.macaddr[0])
+					break;
+			}
+
+			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
+					vpath_idx++) {
+				mac_info.vpath_no = vpath_idx;
+				status = vxge_del_mac_addr(vdev, &mac_info);
+			}
+		}
+
+		/* Enable all multicast */
+		for (i = 0; i < vdev->no_of_vpath; i++) {
+			vxge_assert(vdev->vpaths[i].is_open);
+			status = vxge_hw_vpath_mcast_enable(
+						vdev->vpaths[i].handle);
+			if (status != VXGE_HW_OK) {
+				vxge_debug_init(VXGE_ERR,
+					"%s:%d Enabling all multicasts failed",
+					 __func__, __LINE__);
+			}
+			vdev->all_multi_flg = 1;
+		}
+		dev->flags |= IFF_ALLMULTI;
+	}
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+}
+
+/*
+ * vxge_set_mac_addr
+ * @dev: pointer to the device structure
+ *
+ * Update entry "0" (default MAC addr)
+ */
+static int vxge_set_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+	struct vxgedev *vdev;
+	struct __hw_device  *hldev;
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct macInfo mac_info_new, mac_info_old;
+	int vpath_idx = 0;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+	vxge_assert(dev);
+	vxge_assert(netdev_priv(dev));
+
+	vdev = (struct vxgedev *)netdev_priv(dev);
+	hldev = (struct __hw_device  *)vdev->devh;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EINVAL;
+
+	memset(&mac_info_new, 0, sizeof(struct macInfo));
+	memset(&mac_info_old, 0, sizeof(struct macInfo));
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n",
+		__func__, __LINE__);
+
+	/* Get the old address */
+	memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
+
+	/* Copy the new address */
+	memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
+
+	/* First delete the old mac address from all the vpaths
+	as we can't specify the index while adding new mac address */
+	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
+		struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
+		if (!vpath->is_open) {
+			/* This can happen when this interface is added/removed
+			to the bonding interface. Delete this station address
+			from the linked list */
+			vxge_mac_list_del(vpath, &mac_info_old);
+
+			/* Add this new address to the linked list
+			for later restoring */
+			vxge_mac_list_add(vpath, &mac_info_new);
+
+			continue;
+		}
+		/* Delete the station address */
+		mac_info_old.vpath_no = vpath_idx;
+		status = vxge_del_mac_addr(vdev, &mac_info_old);
+	}
+
+	if (unlikely(!is_vxge_card_up(vdev))) {
+		memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+		return VXGE_HW_OK;
+	}
+
+	/* Set this mac address to all the vpaths */
+	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
+		mac_info_new.vpath_no = vpath_idx;
+		mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
+		status = vxge_add_mac_addr(vdev, &mac_info_new);
+		if (status != VXGE_HW_OK)
+			return -EINVAL;
+	}
+
+	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+	return status;
+}
+
+/*
+ * vxge_vpath_intr_enable
+ * @vdev: pointer to vdev
+ * @vp_id: vpath for which to enable the interrupts
+ *
+ * Enables the interrupts for the vpath
+*/
+void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
+{
+	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
+	int msix_id, alarm_msix_id;
+	int tim_msix_id[4] = {[0 ...3] = 0};
+
+	vxge_hw_vpath_intr_enable(vpath->handle);
+
+	if (vdev->config.intr_type == INTA)
+		vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
+	else {
+		msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
+		alarm_msix_id =
+			VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
+
+		tim_msix_id[0] = msix_id;
+		tim_msix_id[1] = msix_id + 1;
+		vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
+			alarm_msix_id);
+
+		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
+		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
+
+		/* enable the alarm vector */
+		vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
+	}
+}
+
+/*
+ * vxge_vpath_intr_disable
+ * @vdev: pointer to vdev
+ * @vp_id: vpath for which to disable the interrupts
+ *
+ * Disables the interrupts for the vpath
+*/
+void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
+{
+	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
+	int msix_id;
+
+	vxge_hw_vpath_intr_disable(vpath->handle);
+
+	if (vdev->config.intr_type == INTA)
+		vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
+	else {
+		msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
+		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
+		vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
+
+		/* disable the alarm vector */
+		msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
+		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
+	}
+}
+
+/*
+ * vxge_reset_vpath
+ * @vdev: pointer to vdev
+ * @vp_id: vpath to reset
+ *
+ * Resets the vpath
+*/
+int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	int ret = 0;
+
+	/* check if device is down already */
+	if (unlikely(!is_vxge_card_up(vdev)))
+		return 0;
+
+	/* is device reset already scheduled */
+	if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
+		return 0;
+
+	if (vdev->vpaths[vp_id].handle) {
+		if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
+				== VXGE_HW_OK) {
+			if (is_vxge_card_up(vdev) &&
+				vxge_hw_vpath_recover_from_reset(
+					vdev->vpaths[vp_id].handle)
+					!= VXGE_HW_OK) {
+				vxge_debug_init(VXGE_ERR,
+					"vxge_hw_vpath_recover_from_reset \
+					failed for vpath:%d\n", vp_id);
+				return status;
+			}
+		} else {
+			vxge_debug_init(VXGE_ERR,
+				"vxge_hw_vpath_reset failed for \
+				vpath:%d\n", vp_id);
+				return status;
+		}
+	} else
+		return VXGE_HW_FAIL;
+
+	vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
+	vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
+
+	/* Enable all broadcast */
+	vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
+
+	/* Enable the interrupts */
+	vxge_vpath_intr_enable(vdev, vp_id);
+
+	smp_wmb();
+
+	/* Enable the flow of traffic through the vpath */
+	vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
+
+	/* Vpath reset done */
+	clear_bit(vp_id, &vdev->vp_reset);
+
+	/* Start the vpath queue */
+	vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
+
+	return ret;
+}
+
+int do_vxge_reset(struct vxgedev *vdev, int event)
+{
+	enum vxge_hw_status status;
+	int ret = 0, vp_id, i;
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+
+	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
+		/* check if device is down already */
+		if (unlikely(!is_vxge_card_up(vdev)))
+			return 0;
+
+		/* is reset already scheduled */
+		if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
+			return 0;
+	}
+
+	if (event == VXGE_LL_FULL_RESET) {
+		/* wait for all the vpath reset to complete */
+		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
+			while (test_bit(vp_id, &vdev->vp_reset))
+				msleep(50);
+		}
+
+		/* if execution mode is set to debug, don't reset the adapter */
+		if (unlikely(vdev->exec_mode)) {
+			vxge_debug_init(VXGE_ERR,
+				"%s: execution mode is debug, returning..",
+				vdev->ndev->name);
+		clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
+		vxge_stop_all_tx_queue(vdev);
+		return 0;
+		}
+	}
+
+	printk(KERN_NOTICE "%s: reseting the chip\n",
+		vdev->ndev->name);
+
+	if (event == VXGE_LL_FULL_RESET) {
+		vxge_hw_device_intr_disable(vdev->devh);
+
+		switch (vdev->cric_err_event.type) {
+		case VXGE_HW_EVENT_UNKNOWN:
+			vxge_stop_all_tx_queue(vdev);
+			vxge_debug_init(VXGE_ERR,
+				"fatal: %s: Disabling device due to"
+				"unknown error",
+				vdev->ndev->name);
+			ret = -EPERM;
+			goto out;
+		case VXGE_HW_EVENT_RESET_START:
+			break;
+		case VXGE_HW_EVENT_RESET_COMPLETE:
+		case VXGE_HW_EVENT_LINK_DOWN:
+		case VXGE_HW_EVENT_LINK_UP:
+		case VXGE_HW_EVENT_ALARM_CLEARED:
+		case VXGE_HW_EVENT_ECCERR:
+		case VXGE_HW_EVENT_MRPCIM_ECCERR:
+			ret = -EPERM;
+			goto out;
+		case VXGE_HW_EVENT_FIFO_ERR:
+		case VXGE_HW_EVENT_VPATH_ERR:
+			break;
+		case VXGE_HW_EVENT_CRITICAL_ERR:
+			vxge_stop_all_tx_queue(vdev);
+			vxge_debug_init(VXGE_ERR,
+				"fatal: %s: Disabling device due to"
+				"serious error",
+				vdev->ndev->name);
+			/* SOP or device reset required */
+			/* This event is not currently used */
+			ret = -EPERM;
+			goto out;
+		case VXGE_HW_EVENT_SERR:
+			vxge_stop_all_tx_queue(vdev);
+			vxge_debug_init(VXGE_ERR,
+				"fatal: %s: Disabling device due to"
+				"serious error",
+				vdev->ndev->name);
+			ret = -EPERM;
+			goto out;
+		case VXGE_HW_EVENT_SRPCIM_SERR:
+		case VXGE_HW_EVENT_MRPCIM_SERR:
+			ret = -EPERM;
+			goto out;
+		case VXGE_HW_EVENT_SLOT_FREEZE:
+			vxge_stop_all_tx_queue(vdev);
+			vxge_debug_init(VXGE_ERR,
+				"fatal: %s: Disabling device due to"
+				"slot freeze",
+				vdev->ndev->name);
+			ret = -EPERM;
+			goto out;
+		default:
+			break;
+
+		}
+	}
+
+	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
+		vxge_stop_all_tx_queue(vdev);
+
+	if (event == VXGE_LL_FULL_RESET) {
+		status = vxge_reset_all_vpaths(vdev);
+		if (status != VXGE_HW_OK) {
+			vxge_debug_init(VXGE_ERR,
+				"fatal: %s: can not reset vpaths",
+				vdev->ndev->name);
+			ret = -EPERM;
+			goto out;
+		}
+	}
+
+	if (event == VXGE_LL_COMPL_RESET) {
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			if (vdev->vpaths[i].handle) {
+				if (vxge_hw_vpath_recover_from_reset(
+					vdev->vpaths[i].handle)
+						!= VXGE_HW_OK) {
+					vxge_debug_init(VXGE_ERR,
+						"vxge_hw_vpath_recover_"
+						"from_reset failed for vpath: \
+						%d\n", i);
+					ret = -EPERM;
+					goto out;
+				}
+				} else {
+					vxge_debug_init(VXGE_ERR,
+					"vxge_hw_vpath_reset failed for \
+						vpath:%d\n", i);
+					ret = -EPERM;
+					goto out;
+				}
+	}
+
+	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
+		/* Reprogram the DA table with populated mac addresses */
+		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
+			vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
+			vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
+		}
+
+		/* enable vpath interrupts */
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			vxge_vpath_intr_enable(vdev, i);
+
+		vxge_hw_device_intr_enable(vdev->devh);
+
+		smp_wmb();
+
+		/* Indicate card up */
+		set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
+
+		/* Get the traffic to flow through the vpaths */
+		for (i = 0; i < vdev->no_of_vpath; i++)
+			vxge_hw_vpath_enable(vdev->vpaths[i].handle);
+
+		vxge_wake_all_tx_queue(vdev);
+	}
+
+out:
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+
+	/* Indicate reset done */
+	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
+		clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
+	return ret;
+}
+
+/*
+ * vxge_reset
+ * @vdev: pointer to ll device
+ *
+ * driver may reset the chip on events of serr, eccerr, etc
+ */
+int vxge_reset(struct vxgedev *vdev)
+{
+	do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
+	return 0;
+}
+
+/**
+ * vxge_poll - Receive handler when Receive Polling is used.
+ * @dev: pointer to the device structure.
+ * @budget: Number of packets budgeted to be processed in this iteration.
+ *
+ * This function comes into picture only if Receive side is being handled
+ * through polling (called NAPI in linux). It mostly does what the normal
+ * Rx interrupt handler does in terms of descriptor and packet processing
+ * but not in an interrupt context. Also it will process a specified number
+ * of packets at most in one iteration. This value is passed down by the
+ * kernel as the function argument 'budget'.
+ */
+#if defined(HAVE_NETDEV_POLL)
+
+static int vxge_poll_msix(struct napi_struct *napi, int budget)
+{
+	struct vxge_ring *ring =
+		container_of(napi, struct vxge_ring, napi);
+	int budget_org = budget;
+	ring->budget = budget;
+
+	VXGE_COMPLETE_VPATH_RX(ring);
+
+	if (ring->pkts_processed < budget_org) {
+		napi_complete(napi);
+		/* Re enable the Rx interrupts for the vpath */
+		vxge_hw_channel_msix_unmask((struct __hw_channel *)ring->handle,
+						ring->rx_vector_no);
+	}
+
+	return ring->pkts_processed;
+}
+
+static int vxge_poll_inta(struct napi_struct *napi, int budget)
+{
+	struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
+	int pkts_processed = 0;
+	int i;
+	int budget_org = budget;
+	struct vxge_ring *ring;
+
+	struct __hw_device  *hldev = (struct __hw_device  *)
+		pci_get_drvdata(vdev->pdev);
+
+	for (i = 0; i < vdev->no_of_vpath; i++) {
+		ring = &vdev->vpaths[i].ring;
+		ring->budget = budget;
+		VXGE_COMPLETE_VPATH_RX(ring);
+		pkts_processed += ring->pkts_processed;
+		budget -= ring->pkts_processed;
+		if (budget <= 0)
+			break;
+	}
+
+	VXGE_COMPLETE_ALL_TX(vdev);
+
+	if (pkts_processed < budget_org) {
+		napi_complete(napi);
+		/* Re enable the Rx interrupts for the ring */
+
+			vxge_hw_device_unmask_all(hldev);
+			vxge_hw_device_flush_io(hldev);
+
+	}
+
+	return pkts_processed;
+}
+
+#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * vxge_netpoll - netpoll event handler entry point
+ * @dev : pointer to the device structure.
+ * Description:
+ *      This function will be called by upper layer to check for events on the
+ * interface in situations where interrupts are disabled. It is used for
+ * specific in-kernel networking tasks, such as remote consoles and kernel
+ * debugging over the network (example netdump in RedHat).
+ */
+static void vxge_netpoll(struct net_device *dev)
+{
+	struct __hw_device  *hldev;
+	struct vxgedev *vdev;
+
+	vdev = (struct vxgedev *)netdev_priv(dev);
+	hldev = (struct __hw_device  *)pci_get_drvdata(vdev->pdev);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+
+	if (pci_channel_offline(vdev->pdev))
+		return;
+
+	disable_irq(dev->irq);
+	vxge_hw_device_clear_tx_rx(hldev);
+
+	vxge_hw_device_clear_tx_rx(hldev);
+	VXGE_COMPLETE_ALL_RX(vdev);
+	VXGE_COMPLETE_ALL_TX(vdev);
+
+	enable_irq(dev->irq);
+
+	vxge_debug_entryexit(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+	return;
+}
+#endif
+
+/* RTH configuration */
+enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct vxge_hw_rth_hash_types hash_types;
+	u8 itable[256] = {0}; /* indirection table */
+	u8 mtable[256] = {0}; /* CPU to vpath mapping  */
+	int index;
+
+	/*
+	 * Filling
+	 * 	- itable with bucket numbers
+	 * 	- mtable with bucket-to-vpath mapping
+	 */
+	for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
+		itable[index] = index;
+		mtable[index] = index % vdev->no_of_vpath;
+	}
+
+	/* Fill RTH hash types */
+	hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
+	hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
+	hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
+	hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
+	hash_types.hash_type_tcpipv6ex_en =
+					vdev->config.rth_hash_type_tcpipv6ex;
+	hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
+
+	/* set indirection table, bucket-to-vpath mapping */
+	status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
+						vdev->no_of_vpath,
+						mtable,
+						itable,
+						vdev->config.rth_bkt_sz);
+	if (status != VXGE_HW_OK) {
+		vxge_debug_init(VXGE_ERR,
+			"RTH indirection table configuration failed \
+			for vpath:%d:\n",
+			vdev->vpaths[0].device_id);
+		return status;
+	}
+
+	/*
+	* Because the itable_set() method uses the active_table field
+	* for the target virtual path the RTH config should be updated
+	* for all VPATHs. The h/w only uses the lowest numbered VPATH
+	* when steering frames.
+	*/
+	 for (index = 0; index < vdev->no_of_vpath; index++) {
+		status = vxge_hw_vpath_rts_rth_set(
+				vdev->vpaths[index].handle,
+				vdev->config.rth_algorithm,
+				&hash_types,
+				vdev->config.rth_bkt_sz);
+
+		 if (status != VXGE_HW_OK) {
+			vxge_debug_init(VXGE_ERR,
+				"RTH configuration failed for vpath:%d",
+				vdev->vpaths[index].device_id);
+			return status;
+		 }
+	 }
+
+	return status;
+}
+
+int vxge_mac_list_add(struct vxge_vpath *vpath,
+				struct macInfo *mac)
+{
+	struct vxge_mac_addrs *new_mac_entry;
+	u8 *mac_address = NULL;
+
+	if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
+		return TRUE;
+
+	new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
+	if (!new_mac_entry) {
+		vxge_debug_mem(VXGE_ERR,
+			"%s: memory allocation failed",
+			VXGE_DRIVER_NAME);
+		return FALSE;
+	}
+
+	vxge_list_insert(&new_mac_entry->item, &vpath->mac_addr_list);
+
+	/* Copy the new mac address to the list */
+	mac_address = (u8 *)&new_mac_entry->macaddr;
+	memcpy(mac_address, mac->macaddr, ETH_ALEN);
+
+	new_mac_entry->state = mac->state;
+	vpath->mac_addr_cnt++;
+
+	/* Is this a multicast address */
+	if (0x01 & mac->macaddr[0])
+		vpath->mcast_addr_cnt++;
+
+	return TRUE;
+}
+
+/* Add a mac address to DA table */
+enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
+	struct macInfo *mac)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct vxge_vpath *vpath;
+	enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
+
+	if (0x01 & mac->macaddr[0]) /* multicast address */
+		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
+	else
+		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
+
+	vpath = &vdev->vpaths[mac->vpath_no];
+	status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
+						mac->macmask,
+						duplicate_mode);
+	if (status != VXGE_HW_OK) {
+		vxge_debug_init(VXGE_ERR,
+			"DA config add entry failed for vpath:%d",
+			vpath->device_id);
+	} else
+		if (FALSE == vxge_mac_list_add(vpath, mac))
+			status = -EPERM;
+
+	return status;
+}
+
+int vxge_mac_list_del(struct vxge_vpath *vpath,
+					struct macInfo *mac)
+{
+	struct vxge_list *entry, *next;
+	u64 del_mac = 0;
+	u8 *mac_address = (u8 *) (&del_mac);
+
+	/* Copy the mac address to delete from the list */
+	memcpy(mac_address, mac->macaddr, ETH_ALEN);
+
+	vxge_list_for_each_safe(entry, next, &vpath->mac_addr_list) {
+		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
+			vxge_list_remove(entry);
+			kfree((struct vxge_mac_addrs *)entry);
+			vpath->mac_addr_cnt--;
+
+			/* Is this a multicast address */
+			if (0x01 & mac->macaddr[0])
+				vpath->mcast_addr_cnt--;
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+/* delete a mac address from DA table */
+enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
+					struct macInfo *mac)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct vxge_vpath *vpath;
+
+	vpath = &vdev->vpaths[mac->vpath_no];
+	status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
+						mac->macmask);
+	if (status != VXGE_HW_OK) {
+		vxge_debug_init(VXGE_ERR,
+			"DA config delete entry failed for vpath:%d",
+			vpath->device_id);
+	} else
+		vxge_mac_list_del(vpath, mac);
+	return status;
+}
+
+/* list all mac addresses from DA table */
+enum vxge_hw_status
+vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
+					struct macInfo *mac)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	unsigned char macmask[ETH_ALEN];
+	unsigned char macaddr[ETH_ALEN];
+
+	/* get first entry */
+	status = vxge_hw_vpath_mac_addr_get(vpath->handle,
+				macaddr, macmask);
+	if (status != VXGE_HW_OK) {
+		vxge_debug_init(VXGE_ERR,
+			"DA config list entry failed for vpath:%d",
+			vpath->device_id);
+		return status;
+	}
+
+	if (!compare_ether_addr(mac->macaddr, macaddr))
+		return status;
+
+	while (status == VXGE_HW_OK) {
+		/* Get next entries */
+		status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
+				macaddr, macmask);
+
+		if (status != VXGE_HW_OK)
+			return status;
+
+		/* Is it already present? */
+		if (!compare_ether_addr(mac->macaddr, macaddr))
+			return status;
+	}
+
+	return status;
+}
+
+/* Store all vlan ids from the list to the vid table */
+enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct vxgedev *vdev = vpath->vdev;
+	u16 vid;
+
+	if (vdev->vlgrp && vpath->is_open) {
+
+		for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+			if (!vlan_group_get_device(vdev->vlgrp, vid))
+				continue;
+			/* Add these vlan to the vid table */
+			status = vxge_hw_vpath_vid_add(vpath->handle, vid);
+		}
+	}
+
+	return status;
+}
+
+/* Store all mac addresses from the list to the DA table */
+enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
+{
+	enum vxge_hw_status status = VXGE_HW_OK;
+	struct macInfo mac_info;
+	u8 *mac_address = NULL;
+	struct vxge_list *entry, *next;
+
+	memset(&mac_info, 0, sizeof(struct macInfo));
+
+	if (vpath->is_open) {
+
+		vxge_list_for_each_safe(entry, next, &vpath->mac_addr_list) {
+			mac_address =
+				(u8 *)&
+				((struct vxge_mac_addrs *)entry)->macaddr;
+			memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
+			((struct vxge_mac_addrs *)entry)->state =
+				VXGE_LL_MAC_ADDR_IN_DA_TABLE;
+			/* does this mac address already exist in da table? */
+			status = vxge_search_mac_addr_in_da_table(vpath,
+				&mac_info);
+			if (status != VXGE_HW_OK) {
+				/* Add this mac address to the DA table */
+				status = vxge_hw_vpath_mac_addr_add(
+					vpath->handle, mac_info.macaddr,
+					mac_info.macmask,
+				    VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
+				if (status != VXGE_HW_OK) {
+					vxge_debug_init(VXGE_ERR,
+					    "DA add entry failed for vpath:%d",
+					    vpath->device_id);
+					((struct vxge_mac_addrs *)entry)->state
+						= VXGE_LL_MAC_ADDR_IN_LIST;
+				}
+			}
+		}
+	}
+
+	return status;
+}
+
+/* reset vpaths */
+enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
+{
+	int i;
+	enum vxge_hw_status status = VXGE_HW_OK;
+
+	for (i = 0; i < vdev->no_of_vpath; i++)
+		if (vdev->vpaths[i].handle) {
+			if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
+					== VXGE_HW_OK) {
+				if (is_vxge_card_up(vdev) &&
+					vxge_hw_vpath_recover_from_reset(
+						vdev->vpaths[i].handle)
+						!= VXGE_HW_OK) {
+					vxge_debug_init(VXGE_ERR,
+						"vxge_hw_vpath_recover_"
+						"from_reset failed for vpath: \
+						%d\n", i);
+					return status;
+				}
+			} else {
+				vxge_debug_init(VXGE_ERR,
+					"vxge_hw_vpath_reset failed for \
+					vpath:%d\n", i);
+					return status;
+			}
+		}
+	return status;
+}
+
+/* close vpaths */
+void vxge_close_vpaths(struct vxgedev *vdev, int index)
+{
+	int i;
+	for (i = index; i < vdev->no_of_vpath; i++) {
+		if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open)
+			vxge_hw_vpath_close(vdev->vpaths[i].handle);
+		vdev->vpaths[i].is_open = 0;
+		vdev->vpaths[i].handle  = NULL;
+	}
+}
+
+static int
+vxge_get_skb_header(struct sk_buff *skb,
+	void **iphdr, void **tcphdr,
+	u64 *hdr_flags, void *priv)
+{
+	struct vxge_hw_ring_rxd_info *ext_info =
+		(struct vxge_hw_ring_rxd_info *)priv;
+
+	/* Verify that this is a valid IPv4 TCP packet */
+	if (!(ext_info->proto & (VXGE_HW_FRAME_PROTO_TCP |
+		VXGE_HW_FRAME_PROTO_IPV4)))
+		return -1;
+
+	/* Set network headers */
+	skb_reset_network_header(skb);
+	skb_set_transport_header(skb, ip_hdrlen(skb));
+	*iphdr = ip_hdr(skb);
+	*tcphdr = tcp_hdr(skb);
+	*hdr_flags = LRO_IPV4 | LRO_TCP;
+
+	return 0;
+}
+
+/* open vpaths */
+int vxge_open_vpaths(struct vxgedev *vdev)
+{
+	enum vxge_hw_status status;
+	int i;
+	u32 vp_id = 0;
+	struct vxge_hw_vpath_attr attr;
+
+	struct net_lro_mgr *lro_mgr = NULL;
+
+	if (vdev->config.lro_enable) {
+		/* Initialize max aggregatable pkts per session based on MTU */
+		vdev->config.lro_max_aggr_per_sess =
+			(vdev->config.lro_max_bytes - 1) / vdev->mtu;
+
+		if (vdev->config.lro_max_aggr_per_sess < MIN_LRO_PACKETS)
+			vdev->config.lro_max_aggr_per_sess = MIN_LRO_PACKETS;
+
+		if (vdev->config.lro_max_aggr_per_sess > MAX_LRO_PACKETS)
+			vdev->config.lro_max_aggr_per_sess = MAX_LRO_PACKETS;
+	}
+
+	for (i = 0; i < vdev->no_of_vpath; i++) {
+		vxge_assert(vdev->vpaths[i].is_configured);
+		attr.vp_id = vdev->vpaths[i].device_id;
+		attr.fifo_attr.callback = vxge_xmit_compl;
+		attr.fifo_attr.txdl_init = NULL;
+		attr.fifo_attr.txdl_term = vxge_tx_term;
+		attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
+		attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
+
+		attr.ring_attr.callback = vxge_rx_1b_compl;
+		attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
+		attr.ring_attr.rxd_term = vxge_rx_term;
+		attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
+		attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
+
+		vdev->vpaths[i].ring.ndev = vdev->ndev;
+		vdev->vpaths[i].ring.pdev = vdev->pdev;
+		status = vxge_hw_vpath_open(vdev->devh, &attr,
+				NULL, &(vdev->vpaths[i].handle));
+		if (status == VXGE_HW_OK) {
+			vdev->vpaths[i].fifo.handle =
+				(struct __hw_fifo *)attr.fifo_attr.userdata;
+			vdev->vpaths[i].ring.handle =
+				(struct __hw_ring *)attr.ring_attr.userdata;
+			vdev->vpaths[i].fifo.tx_steering_type =
+				vdev->config.tx_steering_type;
+			vdev->vpaths[i].fifo.ndev = vdev->ndev;
+			vdev->vpaths[i].fifo.pdev = vdev->pdev;
+			vdev->vpaths[i].fifo.indicate_max_pkts =
+				vdev->config.fifo_indicate_max_pkts;
+			vdev->vpaths[i].ring.aggr_ack =
+				vdev->config.aggr_ack;
+			vdev->vpaths[i].ring.rx_vector_no = 0;
+			vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
+			vdev->vpaths[i].is_open = 1;
+			vdev->vp_handles[i] = vdev->vpaths[i].handle;
+			vdev->vpaths[i].ring.lro_enable =
+						vdev->config. lro_enable;
+			vdev->vpaths[i].ring.vlan_tag_strip =
+						vdev->vlan_tag_strip;
+			vdev->stats.vpaths_open++;
+		} else {
+			vdev->stats.vpath_open_fail++;
+			vxge_debug_init(VXGE_ERR,
+				"%s: vpath: %d failed to open"
+				"with status: %d",
+			    vdev->ndev->name, vdev->vpaths[i].device_id,
+				status);
+			vxge_close_vpaths(vdev, 0);
+			return -EPERM;
+		}
+
+		if (vdev->config.lro_enable) {
+
+			lro_mgr = &vdev->vpaths[i].ring.lro_mgr;
+			lro_mgr->dev = vdev->ndev;
+			if (vdev->config.napi_enable)
+				lro_mgr->features =
+					LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
+
+			if (vdev->vpaths[i].ring.vlan_tag_strip)
+				lro_mgr->features |= LRO_F_EXTRACT_VLAN_ID;
+
+			lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
+			lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
+			lro_mgr->max_desc = MAX_LRO_SESSIONS;
+			lro_mgr->lro_arr = vdev->vpaths[i].ring.lro_desc;
+			lro_mgr->get_skb_header = vxge_get_skb_header;
+			lro_mgr->max_aggr = vdev->config.lro_max_aggr_per_sess;
+
+		}
+
+		vp_id = vxge_hw_vpath_id(vdev->vpaths[i].handle);
+		vdev->vpaths_deployed |= vxge_mBIT(vp_id);
+	}
+	return VXGE_HW_OK;
+}
+
+/*
+ *  vxge_isr_napi
+ *  @irq: the irq of the device.
+ *  @dev_id: a void pointer to the hldev structure of the Titan device
+ *  @ptregs: pointer to the registers pushed on the stack.
+ *
+ *  This function is the ISR handler of the device when napi is enabled. It
+ *  identifies the reason for the interrupt and calls the relevant service
+ *  routines.
+ */
+irqreturn_t vxge_isr_napi(int irq, void *dev_id)
+{
+	struct __hw_device  *hldev = (struct __hw_device  *)dev_id;
+	struct vxgedev *vdev;
+	struct net_device *dev;
+	u64 reason;
+	enum vxge_hw_status status;
+
+	vxge_debug_intr(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+	dev = vxge_hw_device_private_get(hldev);
+	vdev = netdev_priv(dev);
+
+	VXGE_CHECK_PCI_CHANNEL_OFFLINE(vdev->pdev);
+
+	if (unlikely(!is_vxge_card_up(vdev)))
+		return IRQ_NONE;
+
+	dev = (struct net_device *)vdev->ndev;
+	status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
+			&reason);
+	if (status == VXGE_HW_OK) {
+		vxge_hw_device_mask_all(hldev);
+
+		if (reason &
+			VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
+			vdev->vpaths_deployed >>
+			(64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
+
+			vxge_hw_device_clear_tx_rx(hldev);
+			napi_schedule(&vdev->napi);
+			vxge_debug_intr(VXGE_TRACE,
+				"%s:%d  Exiting...\n", __func__, __LINE__);
+			return IRQ_HANDLED;
+		} else
+			vxge_hw_device_unmask_all(hldev);
+	} else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
+		(status == VXGE_HW_ERR_CRITICAL) ||
+		(status == VXGE_HW_ERR_FIFO))) {
+		vxge_hw_device_mask_all(hldev);
+		vxge_hw_device_flush_io(hldev);
+		return IRQ_HANDLED;
+	} else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
+		return IRQ_HANDLED;
+
+	vxge_debug_intr(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+	return IRQ_NONE;
+}
+
+/*
+ *  vxge_isr
+ *  @irq: the irq of the device.
+ *  @dev_id: a void pointer to the hldev structure of the Titan device
+ *  @ptregs: pointer to the registers pushed on the stack.
+ *
+ *  This function is the ISR handler of the device. It identifies the reason
+ *  for the interrupt and calls the relevant service routines.
+ */
+irqreturn_t vxge_isr(int irq, void *dev_id)
+{
+	struct __hw_device  *hldev = (struct __hw_device  *)dev_id;
+	struct vxgedev *vdev;
+	struct net_device *dev;
+	enum vxge_hw_status status;
+	u64 reason;
+
+	vxge_debug_intr(VXGE_TRACE,
+		"%s:%d\n", __func__, __LINE__);
+	dev = vxge_hw_device_private_get(hldev);
+	vdev = netdev_priv(dev);
+
+	VXGE_CHECK_PCI_CHANNEL_OFFLINE(vdev->pdev);
+
+	if (unlikely(!is_vxge_card_up(vdev)))
+		return IRQ_NONE;
+
+	status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
+			&reason);
+	if (status == VXGE_HW_OK) {
+		vxge_hw_device_mask_all(hldev);
+
+		if (reason &
+			VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
+			vdev->vpaths_deployed >>
+			(64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
+
+			vxge_hw_device_clear_tx_rx(hldev);
+			VXGE_COMPLETE_ALL_RX(vdev);
+			VXGE_COMPLETE_ALL_TX(vdev);
+			vxge_hw_device_unmask_all(hldev);
+			vxge_debug_intr(VXGE_TRACE,
+				"%s:%d  Exiting...\n", __func__, __LINE__);
+			return IRQ_HANDLED;
+		} else
+			vxge_hw_device_unmask_all(hldev);
+	} else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
+		(status == VXGE_HW_ERR_CRITICAL) ||
+		(status == VXGE_HW_ERR_FIFO))) {
+		vxge_hw_device_mask_all(hldev);
+		vxge_hw_device_flush_io(hldev);
+		return IRQ_HANDLED;
+	} else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
+		return IRQ_HANDLED;
+
+	vxge_debug_intr(VXGE_TRACE,
+		"%s:%d  Exiting...\n", __func__, __LINE__);
+	return IRQ_NONE;
+}
+
+#ifdef CONFIG_PCI_MSI
+
+irqreturn_t
+vxge_tx_msix_handle(int irq, void *dev_id)
+{
+	struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
+
+	VXGE_COMPLETE_VPATH_TX(fifo);
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t
+vxge_rx_msix_napi_handle(int irq, void *dev_id)
+{
+	struct vxge_ring *ring = (struct vxge_ring *)dev_id;
+
+	/* MSIX_IDX for Rx is 1 */
+	vxge_hw_channel_msix_mask((struct __hw_channel *)ring->handle,
+					ring->rx_vector_no);
+
+	napi_schedule(&ring->napi);
+	return IRQ_HANDLED;
+}
+
+irqreturn_t
+vxge_rx_msix_handle(int irq, void *dev_id)
+{
+	struct vxge_ring *ring = (struct vxge_ring *)dev_id;
+
+	VXGE_COMPLETE_VPATH_RX(ring);
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t
+vxge_alarm_msix_handle(int irq, void *dev_id)
+{
+	int i;
+	enum vxge_hw_status status;
+	struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
+	struct vxgedev *vdev = vpath->vdev;
+	int alarm_msix_id =
+		VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
+
+	for (i = 0; i < vdev->no_of_vpath; i++) {
+		vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
+			alarm_msix_id);
+
+		status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
+			vdev->exec_mode);
+		if (status == VXGE_HW_OK) {
+
+			vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
+				alarm_msix_id);
+
+			continue;
+		}
+		vxge_debug_intr(VXGE_ERR,
+			"%s: vxge_hw_vpath_alarm_process failed %x ",
+			VXGE_DRIVER_NAME, status);
+	}
+	return IRQ_HANDLED;
+}
+
+int vxge_alloc_msix(struct vxgedev *vdev)
+{
+	int j, i, ret = 0;
+	int intr_cnt = 0;
+	int alarm_msix_id = 0, msix_intr_vect = 0;;
+	vdev->intr_cnt = 0;
+
+	/* Tx/Rx MSIX Vectors count */
+	vdev->intr_cnt = vdev->no_of_vpath * 2;
+
+	/* Alarm MSIX Vectors count */
+	vdev->intr_cnt++;
+
+	intr_cnt = (vdev->max_vpath_supported * 2) + 1;
+	vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
+						GFP_KERNEL);
+	if (!vdev->entries) {
+		vxge_debug_init(VXGE_ERR,
+			"%s: memory allocation failed",
+			VXGE_DRIVER_NAME);
+		return  -ENOMEM;
+	}
+
+	vdev->vxge_entries = kmalloc(intr_cnt *
+					sizeof(struct vxge_msix_entry),
+					GFP_KERNEL);
+	if (!vdev->vxge_entries) {
+		vxge_debug_init(VXGE_ERR,
+			"%s: memory allocation failed",
+			VXGE_DRIVER_NAME);
+		kfree(vdev->entries);
+		return -ENOMEM;
+	}
+
+	/* Last vector in the list is used for alarm */
+	alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
+	for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
+
+		msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
+
+		/* Initialize the fifo vector */
+		vdev->entries[j].entry = msix_intr_vect;
+		vdev->vxge_entries[j].entry = msix_intr_vect;
+		vdev->vxge_entries[j].in_use = 0;
+		j++;
+
+		/* Initialize the ring vector */
+		vdev->entries[j].entry = msix_intr_vect + 1;
+		vdev->vxge_entries[j].entry = msix_intr_vect + 1;
+		vdev->vxge_entries[j].in_use = 0;
+		j++;
+	}
+
+	/* Initialize the alarm vector */
+	vdev->entries[j].entry = alarm_msix_id;
+	vdev->vxge_entries[j].entry = alarm_msix_id;
+	vdev->vxge_entries[j].in_use = 0;
+
+	ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
+	/* if driver request exceeeds available irq's, request with a small
+	 * number.
+	*/
+	if (ret > 0) {
+		vxge_debug_init(VXGE_ERR,
+			"%s: MSI-X enable failed for %d vectors, available: %d",
+			VXGE_DRIVER_NAME, intr_cnt, ret);
+		vdev->max_vpath_supported = vdev->no_of_vpath;
+		intr_cnt = (vdev->max_vpath_supported * 2) + 1;
+
+		/* Reset the alarm vector setting */
+		vdev->entries[j].entry = 0;
+		vdev->vxge_entries[j].entry = 0;
+
+		/* Initialize the alarm vector with new setting */
+		vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
+		vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
+		vdev->vxge_entries[intr_cnt - 1].in_use = 0;
+
+		ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
+		if (!ret)
+			vxge_debug_init(VXGE_ERR,
+				"%s: MSI-X enabled for %d vectors",
+				VXGE_DRIVER_NAME, intr_cnt);
+	}
+
+	if (ret) {
+		vxge_debug_init(VXGE_ERR,
+			"%s: MSI-X enable failed for %d vectors, ret: %d",
+			VXGE_DRIVER_NAME, intr_cnt, ret);
+		kfree(vdev->entries);
+		kfree(vdev->vxge_entries);
+		vdev->entries = NULL;
+		vdev->vxge_entries = NULL;
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static int vxge_enable_msix(struct vxgedev *vdev)
+{
+
+	int i, ret = 0;
+	enum vxge_hw_status status;
+	/* 0 - Tx, 1 - Rx  */
+	int tim_msix_id[4];
+	int alarm_msix_id = 0, msix_intr_vect = 0;;
+	vdev->intr_cnt = 0;
+
+	/* allocate msix vectors */
+	ret = vxge_alloc_msix(vdev);
+	if (!ret) {
+		/* Last vector in the list is used for alarm */
+		alarm_msix_id =
+			VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
+		for (i = 0; i < vdev->no_of_vpath; i++) {
+
+			/* If fifo or ring are not enabled
+			   the MSIX vector for that should be set to 0
+			   Hence initializeing this array to all 0s.
+			*/
+			memset(tim_msix_id, 0, sizeof(tim_msix_id));
+			msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
+			tim_msix_id[0] = msix_intr_vect;
+
+			tim_msix_id[1] = msix_intr_vect + 1;
+			vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
+
+			status = vxge_hw_vpath_msix_set(
+						vdev->vpaths[i].handle,
+						tim_msix_id,
+						alarm_msix_id);
+			if (status != VXGE_HW_OK) {
+				vxge_debug_init(VXGE_ERR,
+					"vxge_hw_vpath_msix_set \
+					failed with status : %x \n", status);
+				kfree(vdev->entries);
+				kfree(vdev->vxge_entries);
+				pci_disable_msix(vdev->pdev);
+				return -ENODEV;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static void vxge_rem_msix_isr(struct vxgedev *vdev)
+{
+	int intr_cnt;
+
+	for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
+		intr_cnt++) {
+		if (vdev->vxge_entries[intr_cnt].in_use) {
+			synchronize_irq(vdev->entries[intr_cnt].vector);
+			free_irq(vdev->entries[intr_cnt].vector,
+				vdev->vxge_entries[intr_cnt].arg);
+			vdev->vxge_entries[intr_cnt].in_use = 0;
+		}
+	}
+
+	kfree(vdev->entries);
+	kfree(vdev->vxge_entries);
+	vdev->entries = NULL;
+	vdev->vxge_entries = NULL;
+
+	if (vdev->config.intr_type == MSI_X)
+		pci_disable_msix(vdev->pdev);
+}
+#endif
+
+static void vxge_rem_isr(struct vxgedev *vdev)
+{
+	struct __hw_device  *hldev;
+	hldev = (struct __hw_device  *) pci_get_drvdata(vdev->pdev);
+
+#ifdef CONFIG_PCI_MSI
+	if (vdev->config.intr_type == MSI_X) {
+		vxge_rem_msix_isr(vdev);
+	} else
+#endif
+	if (
+
+		(vdev->config.intr_type == INTA)) {
+			synchronize_irq(vdev->pdev->irq);
+			free_irq(vdev->pdev->irq, hldev);
+	}
+}
+
+int vxge_add_isr(struct vxgedev *vdev)
+{
+	int ret = 0;
+	struct __hw_device  *hldev;
+#ifdef CONFIG_PCI_MSI
+	int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
+#endif
+	u64 function_mode = vdev->config.device_hw_info.function_mode;
+	int pci_fun = PCI_FUNC(vdev->pdev->devfn);
+	hldev = (struct __hw_device  *) pci_get_drvdata(vdev->pdev);
+
+#ifdef CONFIG_PCI_MSI
+	if (vdev->config.intr_type == MSI_X)
+		ret = vxge_enable_msix(vdev);
+
+	if (ret) {
+		vxge_debug_init(VXGE_ERR,
+			"%s: Enabling MSI-X Failed, ", VXGE_DRIVER_NAME);
+		if (function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
+			return VXGE_HW_FAIL;
+		else {
+			vxge_debug_init(VXGE_ERR,
+				"%s: Defaulting to INTA \n", VXGE_DRIVER_NAME);
+			vdev->config.intr_type = INTA;
+			vxge_hw_device_set_intr_type(vdev->devh,
+				VXGE_HW_INTR_MODE_IRQLINE);
+			vxge_close_vpaths(vdev, 1);
+			vdev->no_of_vpath = 1;
+			vdev->stats.vpaths_open = 1;
+		}
+	}
+
+	if (vdev->config.intr_type == MSI_X) {
+		for (intr_idx = 0;
+		     intr_idx < (vdev->no_of_vpath *
+			VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
+
+			msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
+			irq_req = 0;
+
+			switch (msix_idx) {
+			case 0:
+				sprintf(vdev->desc[intr_cnt],
+					"%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
+					vdev->ndev->name, pci_fun, vp_idx,
+					vdev->entries[intr_cnt].entry);
+				ret = request_irq(
+				    vdev->entries[intr_cnt].vector,
+					vxge_tx_msix_handle, 0,
+					vdev->desc[intr_cnt],
+					&vdev->vpaths[vp_idx].fifo);
+					vdev->vxge_entries[intr_cnt].arg =
+						&vdev->vpaths[vp_idx].fifo;
+				irq_req = 1;
+				break;
+			case 1:
+				sprintf(vdev->desc[intr_cnt],
+					"%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
+					vdev->ndev->name, pci_fun, vp_idx,
+					vdev->entries[intr_cnt].entry);
+				ret = request_irq(
+				    vdev->entries[intr_cnt].vector,
+					vdev->config.napi_enable ?
+					vxge_rx_msix_napi_handle :
+					vxge_rx_msix_handle, 0,
+					vdev->desc[intr_cnt],
+					&vdev->vpaths[vp_idx].ring);
+					vdev->vxge_entries[intr_cnt].arg =
+						&vdev->vpaths[vp_idx].ring;
+				irq_req = 1;
+				break;
+			}
+
+			if (ret) {
+				vxge_debug_init(VXGE_ERR,
+					"%s: MSIX - %d  Registration failed",
+					vdev->ndev->name, intr_cnt);
+				vxge_rem_msix_isr(vdev);
+				if (function_mode ==
+					VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
+					return VXGE_HW_FAIL;
+				else {
+					vxge_hw_device_set_intr_type(
+						vdev->devh,
+						VXGE_HW_INTR_MODE_IRQLINE);
+						vdev->config.intr_type = INTA;
+					vxge_debug_init(VXGE_ERR,
+						"%s: Defaulting to INTA"
+						, vdev->ndev->name);
+					vxge_close_vpaths(vdev, 1);
+					vdev->no_of_vpath = 1;
+					vdev->stats.vpaths_open = 1;
+					goto INTA_MODE;
+				}
+			}
+
+			if (irq_req) {
+				/* We requested for this msix interrupt */
+				vdev->vxge_entries[intr_cnt].in_use = 1;
+				vxge_hw_vpath_msix_unmask(
+					vdev->vpaths[vp_idx].handle,
+					intr_idx);
+				intr_cnt++;
+			}
+
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