i40e_main.c 265 KB
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/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
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 * Copyright(c) 2013 - 2014 Intel Corporation.
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 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
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 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

/* Local includes */
#include "i40e.h"
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#include "i40e_diag.h"
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#ifdef CONFIG_I40E_VXLAN
#include <net/vxlan.h>
#endif
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const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
			"Intel(R) Ethernet Connection XL710 Network Driver";

#define DRV_KERN "-k"

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#define DRV_VERSION_MAJOR 1
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#define DRV_VERSION_MINOR 2
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#define DRV_VERSION_BUILD 6
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#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
	     __stringify(DRV_VERSION_MINOR) "." \
	     __stringify(DRV_VERSION_BUILD)    DRV_KERN
const char i40e_driver_version_str[] = DRV_VERSION;
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static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
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/* a bit of forward declarations */
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
static void i40e_handle_reset_warning(struct i40e_pf *pf);
static int i40e_add_vsi(struct i40e_vsi *vsi);
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
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static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
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static int i40e_setup_misc_vector(struct i40e_pf *pf);
static void i40e_determine_queue_usage(struct i40e_pf *pf);
static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
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static void i40e_fdir_sb_setup(struct i40e_pf *pf);
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static int i40e_veb_get_bw_info(struct i40e_veb *veb);
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/* i40e_pci_tbl - PCI Device ID Table
 *
 * Last entry must be all 0s
 *
 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
 *   Class, Class Mask, private data (not used) }
 */
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static const struct pci_device_id i40e_pci_tbl[] = {
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
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	/* required last entry */
	{0, }
};
MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);

#define I40E_MAX_VF_COUNT 128
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");

MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

/**
 * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 * @alignment: what to align the allocation to
 **/
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
			    u64 size, u32 alignment)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	mem->size = ALIGN(size, alignment);
	mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
				      &mem->pa, GFP_KERNEL);
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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_dma_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
	mem->va = NULL;
	mem->pa = 0;
	mem->size = 0;

	return 0;
}

/**
 * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 **/
int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
			     u32 size)
{
	mem->size = size;
	mem->va = kzalloc(size, GFP_KERNEL);

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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_virt_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
	/* it's ok to kfree a NULL pointer */
	kfree(mem->va);
	mem->va = NULL;
	mem->size = 0;

	return 0;
}

/**
 * i40e_get_lump - find a lump of free generic resource
 * @pf: board private structure
 * @pile: the pile of resource to search
 * @needed: the number of items needed
 * @id: an owner id to stick on the items assigned
 *
 * Returns the base item index of the lump, or negative for error
 *
 * The search_hint trick and lack of advanced fit-finding only work
 * because we're highly likely to have all the same size lump requests.
 * Linear search time and any fragmentation should be minimal.
 **/
static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
			 u16 needed, u16 id)
{
	int ret = -ENOMEM;
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	int i, j;
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	if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
		dev_info(&pf->pdev->dev,
			 "param err: pile=%p needed=%d id=0x%04x\n",
			 pile, needed, id);
		return -EINVAL;
	}

	/* start the linear search with an imperfect hint */
	i = pile->search_hint;
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	while (i < pile->num_entries) {
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		/* skip already allocated entries */
		if (pile->list[i] & I40E_PILE_VALID_BIT) {
			i++;
			continue;
		}

		/* do we have enough in this lump? */
		for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
			if (pile->list[i+j] & I40E_PILE_VALID_BIT)
				break;
		}

		if (j == needed) {
			/* there was enough, so assign it to the requestor */
			for (j = 0; j < needed; j++)
				pile->list[i+j] = id | I40E_PILE_VALID_BIT;
			ret = i;
			pile->search_hint = i + j;
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			break;
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		} else {
			/* not enough, so skip over it and continue looking */
			i += j;
		}
	}

	return ret;
}

/**
 * i40e_put_lump - return a lump of generic resource
 * @pile: the pile of resource to search
 * @index: the base item index
 * @id: the owner id of the items assigned
 *
 * Returns the count of items in the lump
 **/
static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
{
	int valid_id = (id | I40E_PILE_VALID_BIT);
	int count = 0;
	int i;

	if (!pile || index >= pile->num_entries)
		return -EINVAL;

	for (i = index;
	     i < pile->num_entries && pile->list[i] == valid_id;
	     i++) {
		pile->list[i] = 0;
		count++;
	}

	if (count && index < pile->search_hint)
		pile->search_hint = index;

	return count;
}

/**
 * i40e_service_event_schedule - Schedule the service task to wake up
 * @pf: board private structure
 *
 * If not already scheduled, this puts the task into the work queue
 **/
static void i40e_service_event_schedule(struct i40e_pf *pf)
{
	if (!test_bit(__I40E_DOWN, &pf->state) &&
	    !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
	    !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
		schedule_work(&pf->service_task);
}

/**
 * i40e_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 *
 * If any port has noticed a Tx timeout, it is likely that the whole
 * device is munged, not just the one netdev port, so go for the full
 * reset.
 **/
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#ifdef I40E_FCOE
void i40e_tx_timeout(struct net_device *netdev)
#else
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static void i40e_tx_timeout(struct net_device *netdev)
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#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;

	pf->tx_timeout_count++;

	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
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		pf->tx_timeout_recovery_level = 1;
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	pf->tx_timeout_last_recovery = jiffies;
	netdev_info(netdev, "tx_timeout recovery level %d\n",
		    pf->tx_timeout_recovery_level);

	switch (pf->tx_timeout_recovery_level) {
	case 0:
		/* disable and re-enable queues for the VSI */
		if (in_interrupt()) {
			set_bit(__I40E_REINIT_REQUESTED, &pf->state);
			set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
		} else {
			i40e_vsi_reinit_locked(vsi);
		}
		break;
	case 1:
		set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
		break;
	case 2:
		set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
		break;
	case 3:
		set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
		break;
	default:
		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
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		set_bit(__I40E_DOWN_REQUESTED, &pf->state);
		set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
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		break;
	}
	i40e_service_event_schedule(pf);
	pf->tx_timeout_recovery_level++;
}

/**
 * i40e_release_rx_desc - Store the new tail and head values
 * @rx_ring: ring to bump
 * @val: new head index
 **/
static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
{
	rx_ring->next_to_use = val;

	/* Force memory writes to complete before letting h/w
	 * know there are new descriptors to fetch.  (Only
	 * applicable for weak-ordered memory model archs,
	 * such as IA-64).
	 */
	wmb();
	writel(val, rx_ring->tail);
}

/**
 * i40e_get_vsi_stats_struct - Get System Network Statistics
 * @vsi: the VSI we care about
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
{
	return &vsi->net_stats;
}

/**
 * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 * @netdev: network interface device structure
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
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#ifdef I40E_FCOE
struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
					     struct net_device *netdev,
					     struct rtnl_link_stats64 *stats)
#else
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static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
					     struct net_device *netdev,
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					     struct rtnl_link_stats64 *stats)
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#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
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	struct i40e_ring *tx_ring, *rx_ring;
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	struct i40e_vsi *vsi = np->vsi;
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	struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
	int i;

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	if (test_bit(__I40E_DOWN, &vsi->state))
		return stats;

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	if (!vsi->tx_rings)
		return stats;

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	rcu_read_lock();
	for (i = 0; i < vsi->num_queue_pairs; i++) {
		u64 bytes, packets;
		unsigned int start;

		tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
		if (!tx_ring)
			continue;

		do {
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			start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
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			packets = tx_ring->stats.packets;
			bytes   = tx_ring->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
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		stats->tx_packets += packets;
		stats->tx_bytes   += bytes;
		rx_ring = &tx_ring[1];

		do {
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			start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
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			packets = rx_ring->stats.packets;
			bytes   = rx_ring->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
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		stats->rx_packets += packets;
		stats->rx_bytes   += bytes;
	}
	rcu_read_unlock();

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	/* following stats updated by i40e_watchdog_subtask() */
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	stats->multicast	= vsi_stats->multicast;
	stats->tx_errors	= vsi_stats->tx_errors;
	stats->tx_dropped	= vsi_stats->tx_dropped;
	stats->rx_errors	= vsi_stats->rx_errors;
	stats->rx_crc_errors	= vsi_stats->rx_crc_errors;
	stats->rx_length_errors	= vsi_stats->rx_length_errors;
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	return stats;
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}

/**
 * i40e_vsi_reset_stats - Resets all stats of the given vsi
 * @vsi: the VSI to have its stats reset
 **/
void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
{
	struct rtnl_link_stats64 *ns;
	int i;

	if (!vsi)
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	memset(ns, 0, sizeof(*ns));
	memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
	memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
	memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
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	if (vsi->rx_rings && vsi->rx_rings[0]) {
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		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			memset(&vsi->rx_rings[i]->stats, 0 ,
			       sizeof(vsi->rx_rings[i]->stats));
			memset(&vsi->rx_rings[i]->rx_stats, 0 ,
			       sizeof(vsi->rx_rings[i]->rx_stats));
			memset(&vsi->tx_rings[i]->stats, 0 ,
			       sizeof(vsi->tx_rings[i]->stats));
			memset(&vsi->tx_rings[i]->tx_stats, 0,
			       sizeof(vsi->tx_rings[i]->tx_stats));
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		}
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	}
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	vsi->stat_offsets_loaded = false;
}

/**
 * i40e_pf_reset_stats - Reset all of the stats for the given pf
 * @pf: the PF to be reset
 **/
void i40e_pf_reset_stats(struct i40e_pf *pf)
{
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	int i;

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	memset(&pf->stats, 0, sizeof(pf->stats));
	memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
	pf->stat_offsets_loaded = false;
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	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i]) {
			memset(&pf->veb[i]->stats, 0,
			       sizeof(pf->veb[i]->stats));
			memset(&pf->veb[i]->stats_offsets, 0,
			       sizeof(pf->veb[i]->stats_offsets));
			pf->veb[i]->stat_offsets_loaded = false;
		}
	}
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}

/**
 * i40e_stat_update48 - read and update a 48 bit stat from the chip
 * @hw: ptr to the hardware info
 * @hireg: the high 32 bit reg to read
 * @loreg: the low 32 bit reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 *
 * Since the device stats are not reset at PFReset, they likely will not
 * be zeroed when the driver starts.  We'll save the first values read
 * and use them as offsets to be subtracted from the raw values in order
 * to report stats that count from zero.  In the process, we also manage
 * the potential roll-over.
 **/
static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u64 new_data;

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	if (hw->device_id == I40E_DEV_ID_QEMU) {
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		new_data = rd32(hw, loreg);
		new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
	} else {
		new_data = rd64(hw, loreg);
	}
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = new_data - *offset;
	else
		*stat = (new_data + ((u64)1 << 48)) - *offset;
	*stat &= 0xFFFFFFFFFFFFULL;
}

/**
 * i40e_stat_update32 - read and update a 32 bit stat from the chip
 * @hw: ptr to the hardware info
 * @reg: the hw reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 **/
static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u32 new_data;

	new_data = rd32(hw, reg);
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = (u32)(new_data - *offset);
	else
		*stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
}

/**
 * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 * @vsi: the VSI to be updated
 **/
void i40e_update_eth_stats(struct i40e_vsi *vsi)
{
	int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */

	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
	i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_discards, &es->rx_discards);
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	i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
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	i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
			   I40E_GLV_GORCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
			   I40E_GLV_UPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
			   I40E_GLV_MPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
			   I40E_GLV_BPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
			   I40E_GLV_GOTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
			   I40E_GLV_UPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
			   I40E_GLV_MPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
			   I40E_GLV_BPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
	vsi->stat_offsets_loaded = true;
}

/**
 * i40e_update_veb_stats - Update Switch component statistics
 * @veb: the VEB being updated
 **/
static void i40e_update_veb_stats(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
	int idx = 0;

	idx = veb->stats_idx;
	es = &veb->stats;
	oes = &veb->stats_offsets;

	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_discards, &es->tx_discards);
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	if (hw->revision_id > 0)
		i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
				   veb->stat_offsets_loaded,
				   &oes->rx_unknown_protocol,
				   &es->rx_unknown_protocol);
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	i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
	veb->stat_offsets_loaded = true;
}

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#ifdef I40E_FCOE
/**
 * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 * @vsi: the VSI that is capable of doing FCoE
 **/
static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_fcoe_stats *ofs;
	struct i40e_fcoe_stats *fs;     /* device's eth stats */
	int idx;

	if (vsi->type != I40E_VSI_FCOE)
		return;

	idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
	fs = &vsi->fcoe_stats;
	ofs = &vsi->fcoe_stats_offsets;

	i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
	i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
	i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
	i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
	i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
	i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
	i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_last_error, &fs->fcoe_last_error);
	i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);

	vsi->fcoe_stat_offsets_loaded = true;
}

#endif
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/**
 * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 * @pf: the corresponding PF
 *
 * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 **/
static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	struct i40e_hw *hw = &pf->hw;
	u64 xoff = 0;
	u16 i, v;

	if ((hw->fc.current_mode != I40E_FC_FULL) &&
	    (hw->fc.current_mode != I40E_FC_RX_PAUSE))
		return;

	xoff = nsd->link_xoff_rx;
	i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_rx, &nsd->link_xoff_rx);

	/* No new LFC xoff rx */
	if (!(nsd->link_xoff_rx - xoff))
		return;

	/* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		struct i40e_vsi *vsi = pf->vsi[v];

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		if (!vsi || !vsi->tx_rings[0])
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			continue;

		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			struct i40e_ring *ring = vsi->tx_rings[i];
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			clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
		}
	}
}

/**
 * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 * @pf: the corresponding PF
 *
 * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 **/
static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
	struct i40e_dcbx_config *dcb_cfg;
	struct i40e_hw *hw = &pf->hw;
	u16 i, v;
	u8 tc;

	dcb_cfg = &hw->local_dcbx_config;

	/* See if DCB enabled with PFC TC */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
	    !(dcb_cfg->pfc.pfcenable)) {
		i40e_update_link_xoff_rx(pf);
		return;
	}

	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		u64 prio_xoff = nsd->priority_xoff_rx[i];
		i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
				   pf->stat_offsets_loaded,
				   &osd->priority_xoff_rx[i],
				   &nsd->priority_xoff_rx[i]);

		/* No new PFC xoff rx */
		if (!(nsd->priority_xoff_rx[i] - prio_xoff))
			continue;
		/* Get the TC for given priority */
		tc = dcb_cfg->etscfg.prioritytable[i];
		xoff[tc] = true;
	}

	/* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		struct i40e_vsi *vsi = pf->vsi[v];

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		if (!vsi || !vsi->tx_rings[0])
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			continue;

		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			struct i40e_ring *ring = vsi->tx_rings[i];
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			tc = ring->dcb_tc;
			if (xoff[tc])
				clear_bit(__I40E_HANG_CHECK_ARMED,
					  &ring->state);
		}
	}
}

/**
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 * i40e_update_vsi_stats - Update the vsi statistics counters.
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 * @vsi: the VSI to be updated
 *
 * There are a few instances where we store the same stat in a
 * couple of different structs.  This is partly because we have
 * the netdev stats that need to be filled out, which is slightly
 * different from the "eth_stats" defined by the chip and used in
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 * VF communications.  We sort it out here.
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 **/
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static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
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{
	struct i40e_pf *pf = vsi->back;
	struct rtnl_link_stats64 *ons;
	struct rtnl_link_stats64 *ns;   /* netdev stats */
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
	u32 tx_restart, tx_busy;
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	struct i40e_ring *p;
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	u32 rx_page, rx_buf;
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	u64 bytes, packets;
	unsigned int start;
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	u64 rx_p, rx_b;
	u64 tx_p, tx_b;
	u16 q;

	if (test_bit(__I40E_DOWN, &vsi->state) ||
	    test_bit(__I40E_CONFIG_BUSY, &pf->state))
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	ons = &vsi->net_stats_offsets;
	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the netdev and vsi stats that the driver collects
	 * on the fly during packet processing
	 */
	rx_b = rx_p = 0;
	tx_b = tx_p = 0;
	tx_restart = tx_busy = 0;
	rx_page = 0;
	rx_buf = 0;
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	rcu_read_lock();
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	for (q = 0; q < vsi->num_queue_pairs; q++) {
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		/* locate Tx ring */
		p = ACCESS_ONCE(vsi->tx_rings[q]);

		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		tx_b += bytes;
		tx_p += packets;
		tx_restart += p->tx_stats.restart_queue;
		tx_busy += p->tx_stats.tx_busy;
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		/* Rx queue is part of the same block as Tx queue */
		p = &p[1];
		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		rx_b += bytes;
		rx_p += packets;
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		rx_buf += p->rx_stats.alloc_buff_failed;
		rx_page += p->rx_stats.alloc_page_failed;
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	}
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	rcu_read_unlock();
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	vsi->tx_restart = tx_restart;
	vsi->tx_busy = tx_busy;
	vsi->rx_page_failed = rx_page;
	vsi->rx_buf_failed = rx_buf;

	ns->rx_packets = rx_p;
	ns->rx_bytes = rx_b;
	ns->tx_packets = tx_p;
	ns->tx_bytes = tx_b;

	/* update netdev stats from eth stats */
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	i40e_update_eth_stats(vsi);
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	ons->tx_errors = oes->tx_errors;
	ns->tx_errors = es->tx_errors;
	ons->multicast = oes->rx_multicast;
	ns->multicast = es->rx_multicast;
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	ons->rx_dropped = oes->rx_discards;
	ns->rx_dropped = es->rx_discards;
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	ons->tx_dropped = oes->tx_discards;
	ns->tx_dropped = es->tx_discards;

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	/* pull in a couple PF stats if this is the main vsi */
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	if (vsi == pf->vsi[pf->lan_vsi]) {
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		ns->rx_crc_errors = pf->stats.crc_errors;
		ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
		ns->rx_length_errors = pf->stats.rx_length_errors;
	}
}
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/**
 * i40e_update_pf_stats - Update the pf statistics counters.
 * @pf: the PF to be updated
 **/
static void i40e_update_pf_stats(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	struct i40e_hw *hw = &pf->hw;
	u32 val;
	int i;
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	i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
			   I40E_GLPRT_GORCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
	i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
			   I40E_GLPRT_GOTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
	i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_discards,
			   &nsd->eth.rx_discards);
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	i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
			   I40E_GLPRT_UPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_unicast,
			   &nsd->eth.rx_unicast);
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	i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
			   I40E_GLPRT_MPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_multicast,
			   &nsd->eth.rx_multicast);
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	i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
			   I40E_GLPRT_BPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_broadcast,
			   &nsd->eth.rx_broadcast);
	i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
			   I40E_GLPRT_UPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_unicast,
			   &nsd->eth.tx_unicast);
	i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
			   I40E_GLPRT_MPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_multicast,
			   &nsd->eth.tx_multicast);
	i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
			   I40E_GLPRT_BPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_broadcast,
			   &nsd->eth.tx_broadcast);
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	i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_dropped_link_down,
			   &nsd->tx_dropped_link_down);
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	i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->crc_errors, &nsd->crc_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->illegal_bytes, &nsd->illegal_bytes);
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	i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_local_faults,
			   &nsd->mac_local_faults);
	i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_remote_faults,
			   &nsd->mac_remote_faults);
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	i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_length_errors,
			   &nsd->rx_length_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_rx, &nsd->link_xon_rx);
	i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_tx, &nsd->link_xon_tx);
	i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
	i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_tx, &nsd->link_xoff_tx);
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	for (i = 0; i < 8; i++) {
		i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_rx[i],
				   &nsd->priority_xon_rx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_tx[i],
				   &nsd->priority_xon_tx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xoff_tx[i],
				   &nsd->priority_xoff_tx[i]);
		i40e_stat_update32(hw,
				   I40E_GLPRT_RXON2OFFCNT(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_2_xoff[i],
				   &nsd->priority_xon_2_xoff[i]);
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	}

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	i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
			   I40E_GLPRT_PRC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_64, &nsd->rx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
			   I40E_GLPRT_PRC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_127, &nsd->rx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
			   I40E_GLPRT_PRC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_255, &nsd->rx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
			   I40E_GLPRT_PRC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_511, &nsd->rx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
			   I40E_GLPRT_PRC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1023, &nsd->rx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
			   I40E_GLPRT_PRC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1522, &nsd->rx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
			   I40E_GLPRT_PRC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_big, &nsd->rx_size_big);

	i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
			   I40E_GLPRT_PTC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_64, &nsd->tx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
			   I40E_GLPRT_PTC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_127, &nsd->tx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
			   I40E_GLPRT_PTC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_255, &nsd->tx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
			   I40E_GLPRT_PTC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_511, &nsd->tx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
			   I40E_GLPRT_PTC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1023, &nsd->tx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
			   I40E_GLPRT_PTC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1522, &nsd->tx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
			   I40E_GLPRT_PTC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_big, &nsd->tx_size_big);

	i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_undersize, &nsd->rx_undersize);
	i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_fragments, &nsd->rx_fragments);
	i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_oversize, &nsd->rx_oversize);
	i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_jabber, &nsd->rx_jabber);

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	/* FDIR stats */
	i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
			   pf->stat_offsets_loaded,
			   &osd->fd_atr_match, &nsd->fd_atr_match);
	i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
			   pf->stat_offsets_loaded,
			   &osd->fd_sb_match, &nsd->fd_sb_match);

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	val = rd32(hw, I40E_PRTPM_EEE_STAT);
	nsd->tx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
	nsd->rx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
	i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
			   pf->stat_offsets_loaded,
			   &osd->tx_lpi_count, &nsd->tx_lpi_count);
	i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
			   pf->stat_offsets_loaded,
			   &osd->rx_lpi_count, &nsd->rx_lpi_count);

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	pf->stat_offsets_loaded = true;
}

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/**
 * i40e_update_stats - Update the various statistics counters.
 * @vsi: the VSI to be updated
 *
 * Update the various stats for this VSI and its related entities.
 **/
void i40e_update_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	if (vsi == pf->vsi[pf->lan_vsi])
		i40e_update_pf_stats(pf);

	i40e_update_vsi_stats(vsi);
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#ifdef I40E_FCOE
	i40e_update_fcoe_stats(vsi);
#endif
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}

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/**
 * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns ptr to the filter object or NULL
 **/
static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
						u8 *macaddr, s16 vlan,
						bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if ((ether_addr_equal(macaddr, f->macaddr)) &&
		    (vlan == f->vlan)    &&
		    (!is_vf || f->is_vf) &&
		    (!is_netdev || f->is_netdev))
			return f;
	}
	return NULL;
}

/**
 * i40e_find_mac - Find a mac addr in the macvlan filters list
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address we are searching for
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns the first filter with the provided MAC address or NULL if
 * MAC address was not found
 **/
struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
				      bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if ((ether_addr_equal(macaddr, f->macaddr)) &&
		    (!is_vf || f->is_vf) &&
		    (!is_netdev || f->is_netdev))
			return f;
	}
	return NULL;
}

/**
 * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
 * @vsi: the VSI to be searched
 *
 * Returns true if VSI is in vlan mode or false otherwise
 **/
bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
{
	struct i40e_mac_filter *f;

	/* Only -1 for all the filters denotes not in vlan mode
	 * so we have to go through all the list in order to make sure
	 */
	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if (f->vlan >= 0)
			return true;
	}

	return false;
}

/**
 * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
 * @vsi: the VSI to be searched
 * @macaddr: the mac address to be filtered
 * @is_vf: true if it is a vf
 * @is_netdev: true if it is a netdev
 *
 * Goes through all the macvlan filters and adds a
 * macvlan filter for each unique vlan that already exists
 *
 * Returns first filter found on success, else NULL
 **/
struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
					     bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if (!i40e_find_filter(vsi, macaddr, f->vlan,
				      is_vf, is_netdev)) {
			if (!i40e_add_filter(vsi, macaddr, f->vlan,
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					     is_vf, is_netdev))
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				return NULL;
		}
	}

	return list_first_entry_or_null(&vsi->mac_filter_list,
					struct i40e_mac_filter, list);
}

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/**
 * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
 * @vsi: the PF Main VSI - inappropriate for any other VSI
 * @macaddr: the MAC address
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 *
 * Some older firmware configurations set up a default promiscuous VLAN
 * filter that needs to be removed.
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 **/
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static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
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{
	struct i40e_aqc_remove_macvlan_element_data element;
	struct i40e_pf *pf = vsi->back;
	i40e_status aq_ret;

	/* Only appropriate for the PF main VSI */
	if (vsi->type != I40E_VSI_MAIN)
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		return -EINVAL;
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	memset(&element, 0, sizeof(element));
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	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
			I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
	aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
	if (aq_ret)
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		return -ENOENT;

	return 0;
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}

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/**
 * i40e_add_filter - Add a mac/vlan filter to the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns ptr to the filter object or NULL when no memory available.
 **/
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
					u8 *macaddr, s16 vlan,
					bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
			goto add_filter_out;

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		ether_addr_copy(f->macaddr, macaddr);
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		f->vlan = vlan;
		f->changed = true;

		INIT_LIST_HEAD(&f->list);
		list_add(&f->list, &vsi->mac_filter_list);
	}

	/* increment counter and add a new flag if needed */
	if (is_vf) {
		if (!f->is_vf) {
			f->is_vf = true;
			f->counter++;
		}
	} else if (is_netdev) {
		if (!f->is_netdev) {
			f->is_netdev = true;
			f->counter++;
		}
	} else {
		f->counter++;
	}

	/* changed tells sync_filters_subtask to
	 * push the filter down to the firmware
	 */
	if (f->changed) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
	}

add_filter_out:
	return f;
}

/**
 * i40e_del_filter - Remove a mac/vlan filter from the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
 * @is_vf: make sure it's a vf filter, else doesn't matter
 * @is_netdev: make sure it's a netdev filter, else doesn't matter
 **/
void i40e_del_filter(struct i40e_vsi *vsi,
		     u8 *macaddr, s16 vlan,
		     bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return;

	f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
	if (!f || f->counter == 0)
		return;

	if (is_vf) {
		if (f->is_vf) {
			f->is_vf = false;
			f->counter--;
		}
	} else if (is_netdev) {
		if (f->is_netdev) {
			f->is_netdev = false;
			f->counter--;
		}
	} else {
		/* make sure we don't remove a filter in use by vf or netdev */
		int min_f = 0;
		min_f += (f->is_vf ? 1 : 0);
		min_f += (f->is_netdev ? 1 : 0);

		if (f->counter > min_f)
			f->counter--;
	}

	/* counter == 0 tells sync_filters_subtask to
	 * remove the filter from the firmware's list
	 */
	if (f->counter == 0) {
		f->changed = true;
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
	}
}

/**
 * i40e_set_mac - NDO callback to set mac address
 * @netdev: network interface device structure
 * @p: pointer to an address structure
 *
 * Returns 0 on success, negative on failure
 **/
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#ifdef I40E_FCOE
int i40e_set_mac(struct net_device *netdev, void *p)
#else
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static int i40e_set_mac(struct net_device *netdev, void *p)
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#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
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	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
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	struct sockaddr *addr = p;
	struct i40e_mac_filter *f;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

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	if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
		netdev_info(netdev, "already using mac address %pM\n",
			    addr->sa_data);
		return 0;
	}
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	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return -EADDRNOTAVAIL;

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	if (ether_addr_equal(hw->mac.addr, addr->sa_data))
		netdev_info(netdev, "returning to hw mac address %pM\n",
			    hw->mac.addr);
	else
		netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);

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	if (vsi->type == I40E_VSI_MAIN) {
		i40e_status ret;
		ret = i40e_aq_mac_address_write(&vsi->back->hw,
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						I40E_AQC_WRITE_TYPE_LAA_WOL,
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						addr->sa_data, NULL);
		if (ret) {
			netdev_info(netdev,
				    "Addr change for Main VSI failed: %d\n",
				    ret);
			return -EADDRNOTAVAIL;