X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=drivers%2Fnet%2Fe1000%2Figb_pf.c;fp=drivers%2Fnet%2Fe1000%2Figb_pf.c;h=5845bc2242b1ae2d1ac1c15a338a6b55cde954e0;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git

diff --git a/drivers/net/e1000/igb_pf.c b/drivers/net/e1000/igb_pf.c
new file mode 100644
index 00000000..5845bc22
--- /dev/null
+++ b/drivers/net/e1000/igb_pf.c
@@ -0,0 +1,534 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <inttypes.h>
+
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_eal.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_memcpy.h>
+#include <rte_malloc.h>
+#include <rte_random.h>
+
+#include "base/e1000_defines.h"
+#include "base/e1000_regs.h"
+#include "base/e1000_hw.h"
+#include "e1000_ethdev.h"
+
+static inline uint16_t
+dev_num_vf(struct rte_eth_dev *eth_dev)
+{
+	return eth_dev->pci_dev->max_vfs;
+}
+
+static inline
+int igb_vf_perm_addr_gen(struct rte_eth_dev *dev, uint16_t vf_num)
+{
+	unsigned char vf_mac_addr[ETHER_ADDR_LEN];
+	struct e1000_vf_info *vfinfo =
+		*E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private);
+	uint16_t vfn;
+
+	for (vfn = 0; vfn < vf_num; vfn++) {
+		eth_random_addr(vf_mac_addr);
+		/* keep the random address as default */
+		memcpy(vfinfo[vfn].vf_mac_addresses, vf_mac_addr,
+				ETHER_ADDR_LEN);
+	}
+
+	return 0;
+}
+
+static inline int
+igb_mb_intr_setup(struct rte_eth_dev *dev)
+{
+	struct e1000_interrupt *intr =
+		E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
+
+	intr->mask |= E1000_ICR_VMMB;
+
+	return 0;
+}
+
+void igb_pf_host_init(struct rte_eth_dev *eth_dev)
+{
+	struct e1000_vf_info **vfinfo =
+		E1000_DEV_PRIVATE_TO_P_VFDATA(eth_dev->data->dev_private);
+	struct e1000_hw *hw =
+		E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+	uint16_t vf_num;
+	uint8_t nb_queue;
+
+	RTE_ETH_DEV_SRIOV(eth_dev).active = 0;
+	if (0 == (vf_num = dev_num_vf(eth_dev)))
+		return;
+
+	if (hw->mac.type == e1000_i350)
+		nb_queue = 1;
+	else if(hw->mac.type == e1000_82576)
+		/* per datasheet, it should be 2, but 1 seems correct */
+		nb_queue = 1;
+	else
+		return;
+
+	*vfinfo = rte_zmalloc("vf_info", sizeof(struct e1000_vf_info) * vf_num, 0);
+	if (*vfinfo == NULL)
+		rte_panic("Cannot allocate memory for private VF data\n");
+
+	RTE_ETH_DEV_SRIOV(eth_dev).active = ETH_8_POOLS;
+	RTE_ETH_DEV_SRIOV(eth_dev).nb_q_per_pool = nb_queue;
+	RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx = vf_num;
+	RTE_ETH_DEV_SRIOV(eth_dev).def_pool_q_idx = (uint16_t)(vf_num * nb_queue);
+
+	igb_vf_perm_addr_gen(eth_dev, vf_num);
+
+	/* set mb interrupt mask */
+	igb_mb_intr_setup(eth_dev);
+
+	return;
+}
+
+void igb_pf_host_uninit(struct rte_eth_dev *dev)
+{
+	struct e1000_vf_info **vfinfo;
+	uint16_t vf_num;
+
+	PMD_INIT_FUNC_TRACE();
+
+	vfinfo = E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private);
+
+	RTE_ETH_DEV_SRIOV(dev).active = 0;
+	RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = 0;
+	RTE_ETH_DEV_SRIOV(dev).def_vmdq_idx = 0;
+	RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx = 0;
+
+	vf_num = dev_num_vf(dev);
+	if (vf_num == 0)
+		return;
+
+	rte_free(*vfinfo);
+	*vfinfo = NULL;
+}
+
+#define E1000_RAH_POOLSEL_SHIFT    (18)
+int igb_pf_host_configure(struct rte_eth_dev *eth_dev)
+{
+	uint32_t vtctl;
+	uint16_t vf_num;
+	struct e1000_hw *hw =
+		E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+	uint32_t vlanctrl;
+	int i;
+	uint32_t rah;
+
+	if (0 == (vf_num = dev_num_vf(eth_dev)))
+		return -1;
+
+	/* enable VMDq and set the default pool for PF */
+	vtctl = E1000_READ_REG(hw, E1000_VT_CTL);
+	vtctl &= ~E1000_VT_CTL_DEFAULT_POOL_MASK;
+	vtctl |= RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx
+		<< E1000_VT_CTL_DEFAULT_POOL_SHIFT;
+	vtctl |= E1000_VT_CTL_VM_REPL_EN;
+	E1000_WRITE_REG(hw, E1000_VT_CTL, vtctl);
+
+	/* Enable pools reserved to PF only */
+	E1000_WRITE_REG(hw, E1000_VFRE, (~0U) << vf_num);
+	E1000_WRITE_REG(hw, E1000_VFTE, (~0U) << vf_num);
+
+	/* PFDMA Tx General Switch Control Enables VMDQ loopback */
+	if (hw->mac.type == e1000_i350)
+		E1000_WRITE_REG(hw, E1000_TXSWC, E1000_DTXSWC_VMDQ_LOOPBACK_EN);
+	else
+		E1000_WRITE_REG(hw, E1000_DTXSWC, E1000_DTXSWC_VMDQ_LOOPBACK_EN);
+
+	/* clear VMDq map to perment rar 0 */
+	rah = E1000_READ_REG(hw, E1000_RAH(0));
+	rah &= ~ (0xFF << E1000_RAH_POOLSEL_SHIFT);
+	E1000_WRITE_REG(hw, E1000_RAH(0), rah);
+
+	/* clear VMDq map to scan rar 32 */
+	rah = E1000_READ_REG(hw, E1000_RAH(hw->mac.rar_entry_count));
+	rah &= ~ (0xFF << E1000_RAH_POOLSEL_SHIFT);
+	E1000_WRITE_REG(hw, E1000_RAH(hw->mac.rar_entry_count), rah);
+
+	/* set VMDq map to default PF pool */
+	rah = E1000_READ_REG(hw, E1000_RAH(0));
+	rah |= (0x1 << (RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx +
+			E1000_RAH_POOLSEL_SHIFT));
+	E1000_WRITE_REG(hw, E1000_RAH(0), rah);
+
+	/*
+	 * enable vlan filtering and allow all vlan tags through
+	 */
+	vlanctrl = E1000_READ_REG(hw, E1000_RCTL);
+	vlanctrl |= E1000_RCTL_VFE ; /* enable vlan filters */
+	E1000_WRITE_REG(hw, E1000_RCTL, vlanctrl);
+
+	/* VFTA - enable all vlan filters */
+	for (i = 0; i < IGB_VFTA_SIZE; i++) {
+		E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, i, 0xFFFFFFFF);
+	}
+
+	/* Enable/Disable MAC Anti-Spoofing */
+	e1000_vmdq_set_anti_spoofing_pf(hw, FALSE, vf_num);
+
+	return 0;
+}
+
+static void
+set_rx_mode(struct rte_eth_dev *dev)
+{
+	struct rte_eth_dev_data *dev_data = dev->data;
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint32_t fctrl, vmolr = E1000_VMOLR_BAM | E1000_VMOLR_AUPE;
+	uint16_t vfn = dev_num_vf(dev);
+
+	/* Check for Promiscuous and All Multicast modes */
+	fctrl = E1000_READ_REG(hw, E1000_RCTL);
+
+	/* set all bits that we expect to always be set */
+	fctrl &= ~E1000_RCTL_SBP; /* disable store-bad-packets */
+	fctrl |= E1000_RCTL_BAM;
+
+	/* clear the bits we are changing the status of */
+	fctrl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+
+	if (dev_data->promiscuous) {
+		fctrl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
+		vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME);
+	} else {
+		if (dev_data->all_multicast) {
+			fctrl |= E1000_RCTL_MPE;
+			vmolr |= E1000_VMOLR_MPME;
+		} else {
+			vmolr |= E1000_VMOLR_ROMPE;
+		}
+	}
+
+	if ((hw->mac.type == e1000_82576) ||
+		(hw->mac.type == e1000_i350)) {
+		vmolr |= E1000_READ_REG(hw, E1000_VMOLR(vfn)) &
+			 ~(E1000_VMOLR_MPME | E1000_VMOLR_ROMPE |
+			   E1000_VMOLR_ROPE);
+		E1000_WRITE_REG(hw, E1000_VMOLR(vfn), vmolr);
+	}
+
+	E1000_WRITE_REG(hw, E1000_RCTL, fctrl);
+}
+
+static inline void
+igb_vf_reset_event(struct rte_eth_dev *dev, uint16_t vf)
+{
+	struct e1000_hw *hw =
+		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct e1000_vf_info *vfinfo =
+		*(E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+	uint32_t vmolr = E1000_READ_REG(hw, E1000_VMOLR(vf));
+
+	vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE |
+			E1000_VMOLR_BAM | E1000_VMOLR_AUPE);
+	E1000_WRITE_REG(hw, E1000_VMOLR(vf), vmolr);
+
+	E1000_WRITE_REG(hw, E1000_VMVIR(vf), 0);
+
+	/* reset multicast table array for vf */
+	vfinfo[vf].num_vf_mc_hashes = 0;
+
+	/* reset rx mode */
+	set_rx_mode(dev);
+}
+
+static inline void
+igb_vf_reset_msg(struct rte_eth_dev *dev, uint16_t vf)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint32_t reg;
+
+	/* enable transmit and receive for vf */
+	reg = E1000_READ_REG(hw, E1000_VFTE);
+	reg |= (reg | (1 << vf));
+	E1000_WRITE_REG(hw, E1000_VFTE, reg);
+
+	reg = E1000_READ_REG(hw, E1000_VFRE);
+	reg |= (reg | (1 << vf));
+	E1000_WRITE_REG(hw, E1000_VFRE, reg);
+
+	igb_vf_reset_event(dev, vf);
+}
+
+static int
+igb_vf_reset(struct rte_eth_dev *dev, uint16_t vf, uint32_t *msgbuf)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct e1000_vf_info *vfinfo =
+		*(E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+	unsigned char *vf_mac = vfinfo[vf].vf_mac_addresses;
+	int rar_entry = hw->mac.rar_entry_count - (vf + 1);
+	uint8_t *new_mac = (uint8_t *)(&msgbuf[1]);
+	uint32_t rah;
+
+	igb_vf_reset_msg(dev, vf);
+
+	hw->mac.ops.rar_set(hw, vf_mac, rar_entry);
+	rah = E1000_READ_REG(hw, E1000_RAH(rar_entry));
+	rah |= (0x1 << (vf + E1000_RAH_POOLSEL_SHIFT));
+	E1000_WRITE_REG(hw, E1000_RAH(rar_entry), rah);
+
+	/* reply to reset with ack and vf mac address */
+	msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK;
+	rte_memcpy(new_mac, vf_mac, ETHER_ADDR_LEN);
+	e1000_write_mbx(hw, msgbuf, 3, vf);
+
+	return 0;
+}
+
+static int
+igb_vf_set_mac_addr(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct e1000_vf_info *vfinfo =
+		*(E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+	int rar_entry = hw->mac.rar_entry_count - (vf + 1);
+	uint8_t *new_mac = (uint8_t *)(&msgbuf[1]);
+
+	if (is_unicast_ether_addr((struct ether_addr *)new_mac)) {
+		if (!is_zero_ether_addr((struct ether_addr *)new_mac))
+			rte_memcpy(vfinfo[vf].vf_mac_addresses, new_mac,
+				sizeof(vfinfo[vf].vf_mac_addresses));
+		hw->mac.ops.rar_set(hw, new_mac, rar_entry);
+		return 0;
+	}
+	return -1;
+}
+
+static int
+igb_vf_set_multicast(struct rte_eth_dev *dev, __rte_unused uint32_t vf, uint32_t *msgbuf)
+{
+	int i;
+	uint32_t vector_bit;
+	uint32_t vector_reg;
+	uint32_t mta_reg;
+	int entries = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >>
+		E1000_VT_MSGINFO_SHIFT;
+	uint16_t *hash_list = (uint16_t *)&msgbuf[1];
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct e1000_vf_info *vfinfo =
+		*(E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+
+	/* only so many hash values supported */
+	entries = RTE_MIN(entries, E1000_MAX_VF_MC_ENTRIES);
+
+	/*
+	 * salt away the number of multi cast addresses assigned
+	 * to this VF for later use to restore when the PF multi cast
+	 * list changes
+	 */
+	vfinfo->num_vf_mc_hashes = (uint16_t)entries;
+
+	/*
+	 * VFs are limited to using the MTA hash table for their multicast
+	 * addresses
+	 */
+	for (i = 0; i < entries; i++) {
+		vfinfo->vf_mc_hashes[i] = hash_list[i];
+	}
+
+	for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
+		vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
+		vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
+		mta_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, vector_reg);
+		mta_reg |= (1 << vector_bit);
+		E1000_WRITE_REG_ARRAY(hw, E1000_MTA, vector_reg, mta_reg);
+	}
+
+	return 0;
+}
+
+static int
+igb_vf_set_vlan(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+{
+	int add, vid;
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct e1000_vf_info *vfinfo =
+		*(E1000_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+	uint32_t vid_idx, vid_bit, vfta;
+
+	add = (msgbuf[0] & E1000_VT_MSGINFO_MASK)
+		>> E1000_VT_MSGINFO_SHIFT;
+	vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK);
+
+	if (add)
+		vfinfo[vf].vlan_count++;
+	else if (vfinfo[vf].vlan_count)
+		vfinfo[vf].vlan_count--;
+
+	vid_idx = (uint32_t)((vid >> E1000_VFTA_ENTRY_SHIFT) &
+			     E1000_VFTA_ENTRY_MASK);
+	vid_bit = (uint32_t)(1 << (vid & E1000_VFTA_ENTRY_BIT_SHIFT_MASK));
+	vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, vid_idx);
+	if (add)
+		vfta |= vid_bit;
+	else
+		vfta &= ~vid_bit;
+
+	E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, vid_idx, vfta);
+	E1000_WRITE_FLUSH(hw);
+
+	return 0;
+}
+
+static int
+igb_vf_set_rlpml(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint16_t rlpml = msgbuf[1] & E1000_VMOLR_RLPML_MASK;
+	uint32_t max_frame = rlpml + ETHER_HDR_LEN + ETHER_CRC_LEN;
+	uint32_t vmolr;
+
+	if ((max_frame < ETHER_MIN_LEN) || (max_frame > ETHER_MAX_JUMBO_FRAME_LEN))
+		return -1;
+
+	vmolr = E1000_READ_REG(hw, E1000_VMOLR(vf));
+
+	vmolr &= ~E1000_VMOLR_RLPML_MASK;
+	vmolr |= rlpml;
+
+	/* Enable Long Packet support */
+	vmolr |= E1000_VMOLR_LPE;
+
+	E1000_WRITE_REG(hw, E1000_VMOLR(vf), vmolr);
+	E1000_WRITE_FLUSH(hw);
+
+	return 0;
+}
+
+static int
+igb_rcv_msg_from_vf(struct rte_eth_dev *dev, uint16_t vf)
+{
+	uint16_t mbx_size = E1000_VFMAILBOX_SIZE;
+	uint32_t msgbuf[E1000_VFMAILBOX_SIZE];
+	int32_t retval;
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	retval = e1000_read_mbx(hw, msgbuf, mbx_size, vf);
+	if (retval) {
+		PMD_INIT_LOG(ERR, "Error mbx recv msg from VF %d", vf);
+		return retval;
+	}
+
+	/* do nothing with the message already processed */
+	if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK))
+		return retval;
+
+	/* flush the ack before we write any messages back */
+	E1000_WRITE_FLUSH(hw);
+
+	/* perform VF reset */
+	if (msgbuf[0] == E1000_VF_RESET) {
+		return igb_vf_reset(dev, vf, msgbuf);
+	}
+
+	/* check & process VF to PF mailbox message */
+	switch ((msgbuf[0] & 0xFFFF)) {
+	case E1000_VF_SET_MAC_ADDR:
+		retval = igb_vf_set_mac_addr(dev, vf, msgbuf);
+		break;
+	case E1000_VF_SET_MULTICAST:
+		retval = igb_vf_set_multicast(dev, vf, msgbuf);
+		break;
+	case E1000_VF_SET_LPE:
+		retval = igb_vf_set_rlpml(dev, vf, msgbuf);
+		break;
+	case E1000_VF_SET_VLAN:
+		retval = igb_vf_set_vlan(dev, vf, msgbuf);
+		break;
+	default:
+		PMD_INIT_LOG(DEBUG, "Unhandled Msg %8.8x",
+			     (unsigned) msgbuf[0]);
+		retval = E1000_ERR_MBX;
+		break;
+	}
+
+	/* response the VF according to the message process result */
+	if (retval)
+		msgbuf[0] |= E1000_VT_MSGTYPE_NACK;
+	else
+		msgbuf[0] |= E1000_VT_MSGTYPE_ACK;
+
+	msgbuf[0] |= E1000_VT_MSGTYPE_CTS;
+
+	e1000_write_mbx(hw, msgbuf, 1, vf);
+
+	return retval;
+}
+
+static inline void
+igb_rcv_ack_from_vf(struct rte_eth_dev *dev, uint16_t vf)
+{
+	uint32_t msg = E1000_VT_MSGTYPE_NACK;
+	struct e1000_hw *hw =
+		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	e1000_write_mbx(hw, &msg, 1, vf);
+}
+
+void igb_pf_mbx_process(struct rte_eth_dev *eth_dev)
+{
+	uint16_t vf;
+	struct e1000_hw *hw =
+		E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+
+	for (vf = 0; vf < dev_num_vf(eth_dev); vf++) {
+		/* check & process vf function level reset */
+		if (!e1000_check_for_rst(hw, vf))
+			igb_vf_reset_event(eth_dev, vf);
+
+		/* check & process vf mailbox messages */
+		if (!e1000_check_for_msg(hw, vf))
+			igb_rcv_msg_from_vf(eth_dev, vf);
+
+		/* check & process acks from vf */
+		if (!e1000_check_for_ack(hw, vf))
+			igb_rcv_ack_from_vf(eth_dev, vf);
+	}
+}