Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 2578 insertions, 0 deletions

diff --git a/qemu/hw/net/vmxnet3.c b/qemu/hw/net/vmxnet3.c
new file mode 100644
index 000000000..59b06b841
--- /dev/null
+++ b/qemu/hw/net/vmxnet3.c
@@ -0,0 +1,2578 @@
+/*
+ * QEMU VMWARE VMXNET3 paravirtual NIC
+ *
+ * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
+ *
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
+ *
+ * Authors:
+ * Dmitry Fleytman <dmitry@daynix.com>
+ * Tamir Shomer <tamirs@daynix.com>
+ * Yan Vugenfirer <yan@daynix.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "hw/hw.h"
+#include "hw/pci/pci.h"
+#include "net/net.h"
+#include "net/tap.h"
+#include "net/checksum.h"
+#include "sysemu/sysemu.h"
+#include "qemu-common.h"
+#include "qemu/bswap.h"
+#include "hw/pci/msix.h"
+#include "hw/pci/msi.h"
+
+#include "vmxnet3.h"
+#include "vmxnet_debug.h"
+#include "vmware_utils.h"
+#include "vmxnet_tx_pkt.h"
+#include "vmxnet_rx_pkt.h"
+
+#define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
+#define VMXNET3_MSIX_BAR_SIZE 0x2000
+#define MIN_BUF_SIZE 60
+
+#define VMXNET3_BAR0_IDX      (0)
+#define VMXNET3_BAR1_IDX      (1)
+#define VMXNET3_MSIX_BAR_IDX  (2)
+
+#define VMXNET3_OFF_MSIX_TABLE (0x000)
+#define VMXNET3_OFF_MSIX_PBA   (0x800)
+
+/* Link speed in Mbps should be shifted by 16 */
+#define VMXNET3_LINK_SPEED      (1000 << 16)
+
+/* Link status: 1 - up, 0 - down. */
+#define VMXNET3_LINK_STATUS_UP  0x1
+
+/* Least significant bit should be set for revision and version */
+#define VMXNET3_DEVICE_VERSION    0x1
+#define VMXNET3_DEVICE_REVISION   0x1
+
+/* Number of interrupt vectors for non-MSIx modes */
+#define VMXNET3_MAX_NMSIX_INTRS   (1)
+
+/* Macros for rings descriptors access */
+#define VMXNET3_READ_TX_QUEUE_DESCR8(dpa, field) \
+    (vmw_shmem_ld8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
+
+#define VMXNET3_WRITE_TX_QUEUE_DESCR8(dpa, field, value) \
+    (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
+
+#define VMXNET3_READ_TX_QUEUE_DESCR32(dpa, field) \
+    (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
+
+#define VMXNET3_WRITE_TX_QUEUE_DESCR32(dpa, field, value) \
+    (vmw_shmem_st32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
+
+#define VMXNET3_READ_TX_QUEUE_DESCR64(dpa, field) \
+    (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
+
+#define VMXNET3_WRITE_TX_QUEUE_DESCR64(dpa, field, value) \
+    (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
+
+#define VMXNET3_READ_RX_QUEUE_DESCR64(dpa, field) \
+    (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
+
+#define VMXNET3_READ_RX_QUEUE_DESCR32(dpa, field) \
+    (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
+
+#define VMXNET3_WRITE_RX_QUEUE_DESCR64(dpa, field, value) \
+    (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
+
+#define VMXNET3_WRITE_RX_QUEUE_DESCR8(dpa, field, value) \
+    (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
+
+/* Macros for guest driver shared area access */
+#define VMXNET3_READ_DRV_SHARED64(shpa, field) \
+    (vmw_shmem_ld64(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
+
+#define VMXNET3_READ_DRV_SHARED32(shpa, field) \
+    (vmw_shmem_ld32(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
+
+#define VMXNET3_WRITE_DRV_SHARED32(shpa, field, val) \
+    (vmw_shmem_st32(shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
+
+#define VMXNET3_READ_DRV_SHARED16(shpa, field) \
+    (vmw_shmem_ld16(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
+
+#define VMXNET3_READ_DRV_SHARED8(shpa, field) \
+    (vmw_shmem_ld8(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
+
+#define VMXNET3_READ_DRV_SHARED(shpa, field, b, l) \
+    (vmw_shmem_read(shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
+
+#define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
+
+#define TYPE_VMXNET3 "vmxnet3"
+#define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
+
+/* Cyclic ring abstraction */
+typedef struct {
+    hwaddr pa;
+    size_t size;
+    size_t cell_size;
+    size_t next;
+    uint8_t gen;
+} Vmxnet3Ring;
+
+static inline void vmxnet3_ring_init(Vmxnet3Ring *ring,
+                                     hwaddr pa,
+                                     size_t size,
+                                     size_t cell_size,
+                                     bool zero_region)
+{
+    ring->pa = pa;
+    ring->size = size;
+    ring->cell_size = cell_size;
+    ring->gen = VMXNET3_INIT_GEN;
+    ring->next = 0;
+
+    if (zero_region) {
+        vmw_shmem_set(pa, 0, size * cell_size);
+    }
+}
+
+#define VMXNET3_RING_DUMP(macro, ring_name, ridx, r)                         \
+    macro("%s#%d: base %" PRIx64 " size %lu cell_size %lu gen %d next %lu",  \
+          (ring_name), (ridx),                                               \
+          (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
+
+static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
+{
+    if (++ring->next >= ring->size) {
+        ring->next = 0;
+        ring->gen ^= 1;
+    }
+}
+
+static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
+{
+    if (ring->next-- == 0) {
+        ring->next = ring->size - 1;
+        ring->gen ^= 1;
+    }
+}
+
+static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
+{
+    return ring->pa + ring->next * ring->cell_size;
+}
+
+static inline void vmxnet3_ring_read_curr_cell(Vmxnet3Ring *ring, void *buff)
+{
+    vmw_shmem_read(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
+}
+
+static inline void vmxnet3_ring_write_curr_cell(Vmxnet3Ring *ring, void *buff)
+{
+    vmw_shmem_write(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
+}
+
+static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
+{
+    return ring->next;
+}
+
+static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
+{
+    return ring->gen;
+}
+
+/* Debug trace-related functions */
+static inline void
+vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
+{
+    VMW_PKPRN("TX DESCR: "
+              "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
+              "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
+              "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
+              le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
+              descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
+              descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
+}
+
+static inline void
+vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
+{
+    VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
+              "csum_start: %d, csum_offset: %d",
+              vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
+              vhdr->csum_start, vhdr->csum_offset);
+}
+
+static inline void
+vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
+{
+    VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
+              "dtype: %d, ext1: %d, btype: %d",
+              le64_to_cpu(descr->addr), descr->len, descr->gen,
+              descr->rsvd, descr->dtype, descr->ext1, descr->btype);
+}
+
+/* Device state and helper functions */
+#define VMXNET3_RX_RINGS_PER_QUEUE (2)
+
+typedef struct {
+    Vmxnet3Ring tx_ring;
+    Vmxnet3Ring comp_ring;
+
+    uint8_t intr_idx;
+    hwaddr tx_stats_pa;
+    struct UPT1_TxStats txq_stats;
+} Vmxnet3TxqDescr;
+
+typedef struct {
+    Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
+    Vmxnet3Ring comp_ring;
+    uint8_t intr_idx;
+    hwaddr rx_stats_pa;
+    struct UPT1_RxStats rxq_stats;
+} Vmxnet3RxqDescr;
+
+typedef struct {
+    bool is_masked;
+    bool is_pending;
+    bool is_asserted;
+} Vmxnet3IntState;
+
+typedef struct {
+        PCIDevice parent_obj;
+        NICState *nic;
+        NICConf conf;
+        MemoryRegion bar0;
+        MemoryRegion bar1;
+        MemoryRegion msix_bar;
+
+        Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
+        Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
+
+        /* Whether MSI-X support was installed successfully */
+        bool msix_used;
+        /* Whether MSI support was installed successfully */
+        bool msi_used;
+        hwaddr drv_shmem;
+        hwaddr temp_shared_guest_driver_memory;
+
+        uint8_t txq_num;
+
+        /* This boolean tells whether RX packet being indicated has to */
+        /* be split into head and body chunks from different RX rings  */
+        bool rx_packets_compound;
+
+        bool rx_vlan_stripping;
+        bool lro_supported;
+
+        uint8_t rxq_num;
+
+        /* Network MTU */
+        uint32_t mtu;
+
+        /* Maximum number of fragments for indicated TX packets */
+        uint32_t max_tx_frags;
+
+        /* Maximum number of fragments for indicated RX packets */
+        uint16_t max_rx_frags;
+
+        /* Index for events interrupt */
+        uint8_t event_int_idx;
+
+        /* Whether automatic interrupts masking enabled */
+        bool auto_int_masking;
+
+        bool peer_has_vhdr;
+
+        /* TX packets to QEMU interface */
+        struct VmxnetTxPkt *tx_pkt;
+        uint32_t offload_mode;
+        uint32_t cso_or_gso_size;
+        uint16_t tci;
+        bool needs_vlan;
+
+        struct VmxnetRxPkt *rx_pkt;
+
+        bool tx_sop;
+        bool skip_current_tx_pkt;
+
+        uint32_t device_active;
+        uint32_t last_command;
+
+        uint32_t link_status_and_speed;
+
+        Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
+
+        uint32_t temp_mac;   /* To store the low part first */
+
+        MACAddr perm_mac;
+        uint32_t vlan_table[VMXNET3_VFT_SIZE];
+        uint32_t rx_mode;
+        MACAddr *mcast_list;
+        uint32_t mcast_list_len;
+        uint32_t mcast_list_buff_size; /* needed for live migration. */
+} VMXNET3State;
+
+/* Interrupt management */
+
+/*
+ *This function returns sign whether interrupt line is in asserted state
+ * This depends on the type of interrupt used. For INTX interrupt line will
+ * be asserted until explicit deassertion, for MSI(X) interrupt line will
+ * be deasserted automatically due to notification semantics of the MSI(X)
+ * interrupts
+ */
+static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+
+    if (s->msix_used && msix_enabled(d)) {
+        VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
+        msix_notify(d, int_idx);
+        return false;
+    }
+    if (s->msi_used && msi_enabled(d)) {
+        VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
+        msi_notify(d, int_idx);
+        return false;
+    }
+
+    VMW_IRPRN("Asserting line for interrupt %u", int_idx);
+    pci_irq_assert(d);
+    return true;
+}
+
+static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+
+    /*
+     * This function should never be called for MSI(X) interrupts
+     * because deassertion never required for message interrupts
+     */
+    assert(!s->msix_used || !msix_enabled(d));
+    /*
+     * This function should never be called for MSI(X) interrupts
+     * because deassertion never required for message interrupts
+     */
+    assert(!s->msi_used || !msi_enabled(d));
+
+    VMW_IRPRN("Deasserting line for interrupt %u", lidx);
+    pci_irq_deassert(d);
+}
+
+static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
+{
+    if (!s->interrupt_states[lidx].is_pending &&
+       s->interrupt_states[lidx].is_asserted) {
+        VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
+        _vmxnet3_deassert_interrupt_line(s, lidx);
+        s->interrupt_states[lidx].is_asserted = false;
+        return;
+    }
+
+    if (s->interrupt_states[lidx].is_pending &&
+       !s->interrupt_states[lidx].is_masked &&
+       !s->interrupt_states[lidx].is_asserted) {
+        VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
+        s->interrupt_states[lidx].is_asserted =
+            _vmxnet3_assert_interrupt_line(s, lidx);
+        s->interrupt_states[lidx].is_pending = false;
+        return;
+    }
+}
+
+static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+    s->interrupt_states[lidx].is_pending = true;
+    vmxnet3_update_interrupt_line_state(s, lidx);
+
+    if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
+        goto do_automask;
+    }
+
+    if (s->msi_used && msi_enabled(d) && s->auto_int_masking) {
+        goto do_automask;
+    }
+
+    return;
+
+do_automask:
+    s->interrupt_states[lidx].is_masked = true;
+    vmxnet3_update_interrupt_line_state(s, lidx);
+}
+
+static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
+{
+    return s->interrupt_states[lidx].is_asserted;
+}
+
+static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
+{
+    s->interrupt_states[int_idx].is_pending = false;
+    if (s->auto_int_masking) {
+        s->interrupt_states[int_idx].is_masked = true;
+    }
+    vmxnet3_update_interrupt_line_state(s, int_idx);
+}
+
+static void
+vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
+{
+    s->interrupt_states[lidx].is_masked = is_masked;
+    vmxnet3_update_interrupt_line_state(s, lidx);
+}
+
+static bool vmxnet3_verify_driver_magic(hwaddr dshmem)
+{
+    return (VMXNET3_READ_DRV_SHARED32(dshmem, magic) == VMXNET3_REV1_MAGIC);
+}
+
+#define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
+#define VMXNET3_MAKE_BYTE(byte_num, val) \
+    (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
+
+static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
+{
+    s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l,  0);
+    s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l,  1);
+    s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l,  2);
+    s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l,  3);
+    s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
+    s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
+
+    VMW_CFPRN("Variable MAC: " VMXNET_MF, VMXNET_MA(s->conf.macaddr.a));
+
+    qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
+}
+
+static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
+{
+    return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
+           VMXNET3_MAKE_BYTE(1, addr->a[1]) |
+           VMXNET3_MAKE_BYTE(2, addr->a[2]) |
+           VMXNET3_MAKE_BYTE(3, addr->a[3]);
+}
+
+static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
+{
+    return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
+           VMXNET3_MAKE_BYTE(1, addr->a[5]);
+}
+
+static void
+vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
+{
+    vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
+}
+
+static inline void
+vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
+{
+    vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
+}
+
+static inline void
+vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
+{
+    vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
+}
+
+static void
+vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
+{
+    vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
+}
+
+static void
+vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
+{
+    vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
+}
+
+static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32 tx_ridx)
+{
+    struct Vmxnet3_TxCompDesc txcq_descr;
+
+    VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
+
+    txcq_descr.txdIdx = tx_ridx;
+    txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
+
+    vmxnet3_ring_write_curr_cell(&s->txq_descr[qidx].comp_ring, &txcq_descr);
+
+    /* Flush changes in TX descriptor before changing the counter value */
+    smp_wmb();
+
+    vmxnet3_inc_tx_completion_counter(s, qidx);
+    vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
+}
+
+static bool
+vmxnet3_setup_tx_offloads(VMXNET3State *s)
+{
+    switch (s->offload_mode) {
+    case VMXNET3_OM_NONE:
+        vmxnet_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
+        break;
+
+    case VMXNET3_OM_CSUM:
+        vmxnet_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
+        VMW_PKPRN("L4 CSO requested\n");
+        break;
+
+    case VMXNET3_OM_TSO:
+        vmxnet_tx_pkt_build_vheader(s->tx_pkt, true, true,
+            s->cso_or_gso_size);
+        vmxnet_tx_pkt_update_ip_checksums(s->tx_pkt);
+        VMW_PKPRN("GSO offload requested.");
+        break;
+
+    default:
+        g_assert_not_reached();
+        return false;
+    }
+
+    return true;
+}
+
+static void
+vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
+                             const struct Vmxnet3_TxDesc *txd)
+{
+    s->offload_mode = txd->om;
+    s->cso_or_gso_size = txd->msscof;
+    s->tci = txd->tci;
+    s->needs_vlan = txd->ti;
+}
+
+typedef enum {
+    VMXNET3_PKT_STATUS_OK,
+    VMXNET3_PKT_STATUS_ERROR,
+    VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
+    VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
+} Vmxnet3PktStatus;
+
+static void
+vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
+    Vmxnet3PktStatus status)
+{
+    size_t tot_len = vmxnet_tx_pkt_get_total_len(s->tx_pkt);
+    struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
+
+    switch (status) {
+    case VMXNET3_PKT_STATUS_OK:
+        switch (vmxnet_tx_pkt_get_packet_type(s->tx_pkt)) {
+        case ETH_PKT_BCAST:
+            stats->bcastPktsTxOK++;
+            stats->bcastBytesTxOK += tot_len;
+            break;
+        case ETH_PKT_MCAST:
+            stats->mcastPktsTxOK++;
+            stats->mcastBytesTxOK += tot_len;
+            break;
+        case ETH_PKT_UCAST:
+            stats->ucastPktsTxOK++;
+            stats->ucastBytesTxOK += tot_len;
+            break;
+        default:
+            g_assert_not_reached();
+        }
+
+        if (s->offload_mode == VMXNET3_OM_TSO) {
+            /*
+             * According to VMWARE headers this statistic is a number
+             * of packets after segmentation but since we don't have
+             * this information in QEMU model, the best we can do is to
+             * provide number of non-segmented packets
+             */
+            stats->TSOPktsTxOK++;
+            stats->TSOBytesTxOK += tot_len;
+        }
+        break;
+
+    case VMXNET3_PKT_STATUS_DISCARD:
+        stats->pktsTxDiscard++;
+        break;
+
+    case VMXNET3_PKT_STATUS_ERROR:
+        stats->pktsTxError++;
+        break;
+
+    default:
+        g_assert_not_reached();
+    }
+}
+
+static void
+vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
+                                int qidx,
+                                Vmxnet3PktStatus status)
+{
+    struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
+    size_t tot_len = vmxnet_rx_pkt_get_total_len(s->rx_pkt);
+
+    switch (status) {
+    case VMXNET3_PKT_STATUS_OUT_OF_BUF:
+        stats->pktsRxOutOfBuf++;
+        break;
+
+    case VMXNET3_PKT_STATUS_ERROR:
+        stats->pktsRxError++;
+        break;
+    case VMXNET3_PKT_STATUS_OK:
+        switch (vmxnet_rx_pkt_get_packet_type(s->rx_pkt)) {
+        case ETH_PKT_BCAST:
+            stats->bcastPktsRxOK++;
+            stats->bcastBytesRxOK += tot_len;
+            break;
+        case ETH_PKT_MCAST:
+            stats->mcastPktsRxOK++;
+            stats->mcastBytesRxOK += tot_len;
+            break;
+        case ETH_PKT_UCAST:
+            stats->ucastPktsRxOK++;
+            stats->ucastBytesRxOK += tot_len;
+            break;
+        default:
+            g_assert_not_reached();
+        }
+
+        if (tot_len > s->mtu) {
+            stats->LROPktsRxOK++;
+            stats->LROBytesRxOK += tot_len;
+        }
+        break;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+static inline bool
+vmxnet3_pop_next_tx_descr(VMXNET3State *s,
+                          int qidx,
+                          struct Vmxnet3_TxDesc *txd,
+                          uint32_t *descr_idx)
+{
+    Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
+
+    vmxnet3_ring_read_curr_cell(ring, txd);
+    if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
+        /* Only read after generation field verification */
+        smp_rmb();
+        /* Re-read to be sure we got the latest version */
+        vmxnet3_ring_read_curr_cell(ring, txd);
+        VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
+        *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
+        vmxnet3_inc_tx_consumption_counter(s, qidx);
+        return true;
+    }
+
+    return false;
+}
+
+static bool
+vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
+{
+    Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
+
+    if (!vmxnet3_setup_tx_offloads(s)) {
+        status = VMXNET3_PKT_STATUS_ERROR;
+        goto func_exit;
+    }
+
+    /* debug prints */
+    vmxnet3_dump_virt_hdr(vmxnet_tx_pkt_get_vhdr(s->tx_pkt));
+    vmxnet_tx_pkt_dump(s->tx_pkt);
+
+    if (!vmxnet_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
+        status = VMXNET3_PKT_STATUS_DISCARD;
+        goto func_exit;
+    }
+
+func_exit:
+    vmxnet3_on_tx_done_update_stats(s, qidx, status);
+    return (status == VMXNET3_PKT_STATUS_OK);
+}
+
+static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
+{
+    struct Vmxnet3_TxDesc txd;
+    uint32_t txd_idx;
+    uint32_t data_len;
+    hwaddr data_pa;
+
+    for (;;) {
+        if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
+            break;
+        }
+
+        vmxnet3_dump_tx_descr(&txd);
+
+        if (!s->skip_current_tx_pkt) {
+            data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
+            data_pa = le64_to_cpu(txd.addr);
+
+            if (!vmxnet_tx_pkt_add_raw_fragment(s->tx_pkt,
+                                                data_pa,
+                                                data_len)) {
+                s->skip_current_tx_pkt = true;
+            }
+        }
+
+        if (s->tx_sop) {
+            vmxnet3_tx_retrieve_metadata(s, &txd);
+            s->tx_sop = false;
+        }
+
+        if (txd.eop) {
+            if (!s->skip_current_tx_pkt) {
+                vmxnet_tx_pkt_parse(s->tx_pkt);
+
+                if (s->needs_vlan) {
+                    vmxnet_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
+                }
+
+                vmxnet3_send_packet(s, qidx);
+            } else {
+                vmxnet3_on_tx_done_update_stats(s, qidx,
+                                                VMXNET3_PKT_STATUS_ERROR);
+            }
+
+            vmxnet3_complete_packet(s, qidx, txd_idx);
+            s->tx_sop = true;
+            s->skip_current_tx_pkt = false;
+            vmxnet_tx_pkt_reset(s->tx_pkt);
+        }
+    }
+}
+
+static inline void
+vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
+                           struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
+{
+    Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
+    *didx = vmxnet3_ring_curr_cell_idx(ring);
+    vmxnet3_ring_read_curr_cell(ring, dbuf);
+}
+
+static inline uint8_t
+vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
+{
+    return s->rxq_descr[qidx].rx_ring[ridx].gen;
+}
+
+static inline hwaddr
+vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
+{
+    uint8_t ring_gen;
+    struct Vmxnet3_RxCompDesc rxcd;
+
+    hwaddr daddr =
+        vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
+
+    cpu_physical_memory_read(daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
+    ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
+
+    if (rxcd.gen != ring_gen) {
+        *descr_gen = ring_gen;
+        vmxnet3_inc_rx_completion_counter(s, qidx);
+        return daddr;
+    }
+
+    return 0;
+}
+
+static inline void
+vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
+{
+    vmxnet3_dec_rx_completion_counter(s, qidx);
+}
+
+#define RXQ_IDX      (0)
+#define RX_HEAD_BODY_RING (0)
+#define RX_BODY_ONLY_RING (1)
+
+static bool
+vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
+                               struct Vmxnet3_RxDesc *descr_buf,
+                               uint32_t *descr_idx,
+                               uint32_t *ridx)
+{
+    for (;;) {
+        uint32_t ring_gen;
+        vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
+                                   descr_buf, descr_idx);
+
+        /* If no more free descriptors - return */
+        ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
+        if (descr_buf->gen != ring_gen) {
+            return false;
+        }
+
+        /* Only read after generation field verification */
+        smp_rmb();
+        /* Re-read to be sure we got the latest version */
+        vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
+                                   descr_buf, descr_idx);
+
+        /* Mark current descriptor as used/skipped */
+        vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
+
+        /* If this is what we are looking for - return */
+        if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
+            *ridx = RX_HEAD_BODY_RING;
+            return true;
+        }
+    }
+}
+
+static bool
+vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
+                               struct Vmxnet3_RxDesc *d,
+                               uint32_t *didx,
+                               uint32_t *ridx)
+{
+    vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
+
+    /* Try to find corresponding descriptor in head/body ring */
+    if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
+        /* Only read after generation field verification */
+        smp_rmb();
+        /* Re-read to be sure we got the latest version */
+        vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
+        if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
+            vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
+            *ridx = RX_HEAD_BODY_RING;
+            return true;
+        }
+    }
+
+    /*
+     * If there is no free descriptors on head/body ring or next free
+     * descriptor is a head descriptor switch to body only ring
+     */
+    vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
+
+    /* If no more free descriptors - return */
+    if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
+        /* Only read after generation field verification */
+        smp_rmb();
+        /* Re-read to be sure we got the latest version */
+        vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
+        assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
+        *ridx = RX_BODY_ONLY_RING;
+        vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
+        return true;
+    }
+
+    return false;
+}
+
+static inline bool
+vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
+                          struct Vmxnet3_RxDesc *descr_buf,
+                          uint32_t *descr_idx,
+                          uint32_t *ridx)
+{
+    if (is_head || !s->rx_packets_compound) {
+        return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
+    } else {
+        return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
+    }
+}
+
+/* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
+ * the implementation always passes an RxCompDesc with a "Checksum
+ * calculated and found correct" to the OS (cnc=0 and tuc=1, see
+ * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
+ *
+ * Therefore, if packet has the NEEDS_CSUM set, we must calculate
+ * and place a fully computed checksum into the tcp/udp header.
+ * Otherwise, the OS driver will receive a checksum-correct indication
+ * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
+ * having just the pseudo header csum value.
+ *
+ * While this is not a problem if packet is destined for local delivery,
+ * in the case the host OS performs forwarding, it will forward an
+ * incorrectly checksummed packet.
+ */
+static void vmxnet3_rx_need_csum_calculate(struct VmxnetRxPkt *pkt,
+                                           const void *pkt_data,
+                                           size_t pkt_len)
+{
+    struct virtio_net_hdr *vhdr;
+    bool isip4, isip6, istcp, isudp;
+    uint8_t *data;
+    int len;
+
+    if (!vmxnet_rx_pkt_has_virt_hdr(pkt)) {
+        return;
+    }
+
+    vhdr = vmxnet_rx_pkt_get_vhdr(pkt);
+    if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
+        return;
+    }
+
+    vmxnet_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
+    if (!(isip4 || isip6) || !(istcp || isudp)) {
+        return;
+    }
+
+    vmxnet3_dump_virt_hdr(vhdr);
+
+    /* Validate packet len: csum_start + scum_offset + length of csum field */
+    if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
+        VMW_PKPRN("packet len:%d < csum_start(%d) + csum_offset(%d) + 2, "
+                  "cannot calculate checksum",
+                  len, vhdr->csum_start, vhdr->csum_offset);
+        return;
+    }
+
+    data = (uint8_t *)pkt_data + vhdr->csum_start;
+    len = pkt_len - vhdr->csum_start;
+    /* Put the checksum obtained into the packet */
+    stw_be_p(data + vhdr->csum_offset, net_raw_checksum(data, len));
+
+    vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
+    vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
+}
+
+static void vmxnet3_rx_update_descr(struct VmxnetRxPkt *pkt,
+    struct Vmxnet3_RxCompDesc *rxcd)
+{
+    int csum_ok, is_gso;
+    bool isip4, isip6, istcp, isudp;
+    struct virtio_net_hdr *vhdr;
+    uint8_t offload_type;
+
+    if (vmxnet_rx_pkt_is_vlan_stripped(pkt)) {
+        rxcd->ts = 1;
+        rxcd->tci = vmxnet_rx_pkt_get_vlan_tag(pkt);
+    }
+
+    if (!vmxnet_rx_pkt_has_virt_hdr(pkt)) {
+        goto nocsum;
+    }
+
+    vhdr = vmxnet_rx_pkt_get_vhdr(pkt);
+    /*
+     * Checksum is valid when lower level tell so or when lower level
+     * requires checksum offload telling that packet produced/bridged
+     * locally and did travel over network after last checksum calculation
+     * or production
+     */
+    csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
+              VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
+
+    offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
+    is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
+
+    if (!csum_ok && !is_gso) {
+        goto nocsum;
+    }
+
+    vmxnet_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
+    if ((!istcp && !isudp) || (!isip4 && !isip6)) {
+        goto nocsum;
+    }
+
+    rxcd->cnc = 0;
+    rxcd->v4 = isip4 ? 1 : 0;
+    rxcd->v6 = isip6 ? 1 : 0;
+    rxcd->tcp = istcp ? 1 : 0;
+    rxcd->udp = isudp ? 1 : 0;
+    rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
+    return;
+
+nocsum:
+    rxcd->cnc = 1;
+    return;
+}
+
+static void
+vmxnet3_physical_memory_writev(const struct iovec *iov,
+                               size_t start_iov_off,
+                               hwaddr target_addr,
+                               size_t bytes_to_copy)
+{
+    size_t curr_off = 0;
+    size_t copied = 0;
+
+    while (bytes_to_copy) {
+        if (start_iov_off < (curr_off + iov->iov_len)) {
+            size_t chunk_len =
+                MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
+
+            cpu_physical_memory_write(target_addr + copied,
+                                      iov->iov_base + start_iov_off - curr_off,
+                                      chunk_len);
+
+            copied += chunk_len;
+            start_iov_off += chunk_len;
+            curr_off = start_iov_off;
+            bytes_to_copy -= chunk_len;
+        } else {
+            curr_off += iov->iov_len;
+        }
+        iov++;
+    }
+}
+
+static bool
+vmxnet3_indicate_packet(VMXNET3State *s)
+{
+    struct Vmxnet3_RxDesc rxd;
+    bool is_head = true;
+    uint32_t rxd_idx;
+    uint32_t rx_ridx = 0;
+
+    struct Vmxnet3_RxCompDesc rxcd;
+    uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
+    hwaddr new_rxcd_pa = 0;
+    hwaddr ready_rxcd_pa = 0;
+    struct iovec *data = vmxnet_rx_pkt_get_iovec(s->rx_pkt);
+    size_t bytes_copied = 0;
+    size_t bytes_left = vmxnet_rx_pkt_get_total_len(s->rx_pkt);
+    uint16_t num_frags = 0;
+    size_t chunk_size;
+
+    vmxnet_rx_pkt_dump(s->rx_pkt);
+
+    while (bytes_left > 0) {
+
+        /* cannot add more frags to packet */
+        if (num_frags == s->max_rx_frags) {
+            break;
+        }
+
+        new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
+        if (!new_rxcd_pa) {
+            break;
+        }
+
+        if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
+            break;
+        }
+
+        chunk_size = MIN(bytes_left, rxd.len);
+        vmxnet3_physical_memory_writev(data, bytes_copied,
+                                       le64_to_cpu(rxd.addr), chunk_size);
+        bytes_copied += chunk_size;
+        bytes_left -= chunk_size;
+
+        vmxnet3_dump_rx_descr(&rxd);
+
+        if (ready_rxcd_pa != 0) {
+            cpu_physical_memory_write(ready_rxcd_pa, &rxcd, sizeof(rxcd));
+        }
+
+        memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
+        rxcd.rxdIdx = rxd_idx;
+        rxcd.len = chunk_size;
+        rxcd.sop = is_head;
+        rxcd.gen = new_rxcd_gen;
+        rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
+
+        if (bytes_left == 0) {
+            vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
+        }
+
+        VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
+                  "sop %d csum_correct %lu",
+                  (unsigned long) rx_ridx,
+                  (unsigned long) rxcd.rxdIdx,
+                  (unsigned long) rxcd.len,
+                  (int) rxcd.sop,
+                  (unsigned long) rxcd.tuc);
+
+        is_head = false;
+        ready_rxcd_pa = new_rxcd_pa;
+        new_rxcd_pa = 0;
+        num_frags++;
+    }
+
+    if (ready_rxcd_pa != 0) {
+        rxcd.eop = 1;
+        rxcd.err = (bytes_left != 0);
+        cpu_physical_memory_write(ready_rxcd_pa, &rxcd, sizeof(rxcd));
+
+        /* Flush RX descriptor changes */
+        smp_wmb();
+    }
+
+    if (new_rxcd_pa != 0) {
+        vmxnet3_revert_rxc_descr(s, RXQ_IDX);
+    }
+
+    vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
+
+    if (bytes_left == 0) {
+        vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
+        return true;
+    } else if (num_frags == s->max_rx_frags) {
+        vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
+        return false;
+    } else {
+        vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
+                                        VMXNET3_PKT_STATUS_OUT_OF_BUF);
+        return false;
+    }
+}
+
+static void
+vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
+                      uint64_t val, unsigned size)
+{
+    VMXNET3State *s = opaque;
+
+    if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
+                        VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
+        int tx_queue_idx =
+            VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
+                                     VMXNET3_REG_ALIGN);
+        assert(tx_queue_idx <= s->txq_num);
+        vmxnet3_process_tx_queue(s, tx_queue_idx);
+        return;
+    }
+
+    if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
+                        VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
+        int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
+                                         VMXNET3_REG_ALIGN);
+
+        VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
+
+        vmxnet3_on_interrupt_mask_changed(s, l, val);
+        return;
+    }
+
+    if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
+                        VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
+       VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
+                        VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
+        return;
+    }
+
+    VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
+              (uint64_t) addr, val, size);
+}
+
+static uint64_t
+vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
+{
+    if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
+                        VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
+        g_assert_not_reached();
+    }
+
+    VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
+    return 0;
+}
+
+static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
+{
+    int i;
+    for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
+        s->interrupt_states[i].is_asserted = false;
+        s->interrupt_states[i].is_pending = false;
+        s->interrupt_states[i].is_masked = true;
+    }
+}
+
+static void vmxnet3_reset_mac(VMXNET3State *s)
+{
+    memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
+    VMW_CFPRN("MAC address set to: " VMXNET_MF, VMXNET_MA(s->conf.macaddr.a));
+}
+
+static void vmxnet3_deactivate_device(VMXNET3State *s)
+{
+    VMW_CBPRN("Deactivating vmxnet3...");
+    s->device_active = false;
+}
+
+static void vmxnet3_reset(VMXNET3State *s)
+{
+    VMW_CBPRN("Resetting vmxnet3...");
+
+    vmxnet3_deactivate_device(s);
+    vmxnet3_reset_interrupt_states(s);
+    vmxnet_tx_pkt_reset(s->tx_pkt);
+    s->drv_shmem = 0;
+    s->tx_sop = true;
+    s->skip_current_tx_pkt = false;
+}
+
+static void vmxnet3_update_rx_mode(VMXNET3State *s)
+{
+    s->rx_mode = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
+                                           devRead.rxFilterConf.rxMode);
+    VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
+}
+
+static void vmxnet3_update_vlan_filters(VMXNET3State *s)
+{
+    int i;
+
+    /* Copy configuration from shared memory */
+    VMXNET3_READ_DRV_SHARED(s->drv_shmem,
+                            devRead.rxFilterConf.vfTable,
+                            s->vlan_table,
+                            sizeof(s->vlan_table));
+
+    /* Invert byte order when needed */
+    for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
+        s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
+    }
+
+    /* Dump configuration for debugging purposes */
+    VMW_CFPRN("Configured VLANs:");
+    for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
+        if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
+            VMW_CFPRN("\tVLAN %d is present", i);
+        }
+    }
+}
+
+static void vmxnet3_update_mcast_filters(VMXNET3State *s)
+{
+    uint16_t list_bytes =
+        VMXNET3_READ_DRV_SHARED16(s->drv_shmem,
+                                  devRead.rxFilterConf.mfTableLen);
+
+    s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
+
+    s->mcast_list = g_realloc(s->mcast_list, list_bytes);
+    if (!s->mcast_list) {
+        if (s->mcast_list_len == 0) {
+            VMW_CFPRN("Current multicast list is empty");
+        } else {
+            VMW_ERPRN("Failed to allocate multicast list of %d elements",
+                      s->mcast_list_len);
+        }
+        s->mcast_list_len = 0;
+    } else {
+        int i;
+        hwaddr mcast_list_pa =
+            VMXNET3_READ_DRV_SHARED64(s->drv_shmem,
+                                      devRead.rxFilterConf.mfTablePA);
+
+        cpu_physical_memory_read(mcast_list_pa, s->mcast_list, list_bytes);
+        VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
+        for (i = 0; i < s->mcast_list_len; i++) {
+            VMW_CFPRN("\t" VMXNET_MF, VMXNET_MA(s->mcast_list[i].a));
+        }
+    }
+}
+
+static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
+{
+    vmxnet3_update_rx_mode(s);
+    vmxnet3_update_vlan_filters(s);
+    vmxnet3_update_mcast_filters(s);
+}
+
+static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
+{
+    uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
+    VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
+    return interrupt_mode;
+}
+
+static void vmxnet3_fill_stats(VMXNET3State *s)
+{
+    int i;
+    for (i = 0; i < s->txq_num; i++) {
+        cpu_physical_memory_write(s->txq_descr[i].tx_stats_pa,
+                                  &s->txq_descr[i].txq_stats,
+                                  sizeof(s->txq_descr[i].txq_stats));
+    }
+
+    for (i = 0; i < s->rxq_num; i++) {
+        cpu_physical_memory_write(s->rxq_descr[i].rx_stats_pa,
+                                  &s->rxq_descr[i].rxq_stats,
+                                  sizeof(s->rxq_descr[i].rxq_stats));
+    }
+}
+
+static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
+{
+    struct Vmxnet3_GOSInfo gos;
+
+    VMXNET3_READ_DRV_SHARED(s->drv_shmem, devRead.misc.driverInfo.gos,
+                            &gos, sizeof(gos));
+    s->rx_packets_compound =
+        (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
+
+    VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
+}
+
+static void
+vmxnet3_dump_conf_descr(const char *name,
+                        struct Vmxnet3_VariableLenConfDesc *pm_descr)
+{
+    VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
+              name, pm_descr->confVer, pm_descr->confLen);
+
+};
+
+static void vmxnet3_update_pm_state(VMXNET3State *s)
+{
+    struct Vmxnet3_VariableLenConfDesc pm_descr;
+
+    pm_descr.confLen =
+        VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confLen);
+    pm_descr.confVer =
+        VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confVer);
+    pm_descr.confPA =
+        VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.pmConfDesc.confPA);
+
+    vmxnet3_dump_conf_descr("PM State", &pm_descr);
+}
+
+static void vmxnet3_update_features(VMXNET3State *s)
+{
+    uint32_t guest_features;
+    int rxcso_supported;
+
+    guest_features = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
+                                               devRead.misc.uptFeatures);
+
+    rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
+    s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
+    s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
+
+    VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
+              s->lro_supported, rxcso_supported,
+              s->rx_vlan_stripping);
+    if (s->peer_has_vhdr) {
+        qemu_set_offload(qemu_get_queue(s->nic)->peer,
+                         rxcso_supported,
+                         s->lro_supported,
+                         s->lro_supported,
+                         0,
+                         0);
+    }
+}
+
+static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
+{
+    return s->msix_used || s->msi_used || (intx ==
+           (pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1));
+}
+
+static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
+{
+    int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
+    if (idx >= max_ints) {
+        hw_error("Bad interrupt index: %d\n", idx);
+    }
+}
+
+static void vmxnet3_validate_interrupts(VMXNET3State *s)
+{
+    int i;
+
+    VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
+    vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
+
+    for (i = 0; i < s->txq_num; i++) {
+        int idx = s->txq_descr[i].intr_idx;
+        VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
+        vmxnet3_validate_interrupt_idx(s->msix_used, idx);
+    }
+
+    for (i = 0; i < s->rxq_num; i++) {
+        int idx = s->rxq_descr[i].intr_idx;
+        VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
+        vmxnet3_validate_interrupt_idx(s->msix_used, idx);
+    }
+}
+
+static void vmxnet3_validate_queues(VMXNET3State *s)
+{
+    /*
+    * txq_num and rxq_num are total number of queues
+    * configured by guest. These numbers must not
+    * exceed corresponding maximal values.
+    */
+
+    if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
+        hw_error("Bad TX queues number: %d\n", s->txq_num);
+    }
+
+    if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
+        hw_error("Bad RX queues number: %d\n", s->rxq_num);
+    }
+}
+
+static void vmxnet3_activate_device(VMXNET3State *s)
+{
+    int i;
+    static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
+    hwaddr qdescr_table_pa;
+    uint64_t pa;
+    uint32_t size;
+
+    /* Verify configuration consistency */
+    if (!vmxnet3_verify_driver_magic(s->drv_shmem)) {
+        VMW_ERPRN("Device configuration received from driver is invalid");
+        return;
+    }
+
+    vmxnet3_adjust_by_guest_type(s);
+    vmxnet3_update_features(s);
+    vmxnet3_update_pm_state(s);
+    vmxnet3_setup_rx_filtering(s);
+    /* Cache fields from shared memory */
+    s->mtu = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.misc.mtu);
+    VMW_CFPRN("MTU is %u", s->mtu);
+
+    s->max_rx_frags =
+        VMXNET3_READ_DRV_SHARED16(s->drv_shmem, devRead.misc.maxNumRxSG);
+
+    if (s->max_rx_frags == 0) {
+        s->max_rx_frags = 1;
+    }
+
+    VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
+
+    s->event_int_idx =
+        VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.eventIntrIdx);
+    assert(vmxnet3_verify_intx(s, s->event_int_idx));
+    VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
+
+    s->auto_int_masking =
+        VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.autoMask);
+    VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
+
+    s->txq_num =
+        VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numTxQueues);
+    s->rxq_num =
+        VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numRxQueues);
+
+    VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
+    vmxnet3_validate_queues(s);
+
+    qdescr_table_pa =
+        VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.misc.queueDescPA);
+    VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
+
+    /*
+     * Worst-case scenario is a packet that holds all TX rings space so
+     * we calculate total size of all TX rings for max TX fragments number
+     */
+    s->max_tx_frags = 0;
+
+    /* TX queues */
+    for (i = 0; i < s->txq_num; i++) {
+        hwaddr qdescr_pa =
+            qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
+
+        /* Read interrupt number for this TX queue */
+        s->txq_descr[i].intr_idx =
+            VMXNET3_READ_TX_QUEUE_DESCR8(qdescr_pa, conf.intrIdx);
+        assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
+
+        VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
+
+        /* Read rings memory locations for TX queues */
+        pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.txRingBasePA);
+        size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.txRingSize);
+
+        vmxnet3_ring_init(&s->txq_descr[i].tx_ring, pa, size,
+                          sizeof(struct Vmxnet3_TxDesc), false);
+        VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
+
+        s->max_tx_frags += size;
+
+        /* TXC ring */
+        pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.compRingBasePA);
+        size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.compRingSize);
+        vmxnet3_ring_init(&s->txq_descr[i].comp_ring, pa, size,
+                          sizeof(struct Vmxnet3_TxCompDesc), true);
+        VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
+
+        s->txq_descr[i].tx_stats_pa =
+            qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
+
+        memset(&s->txq_descr[i].txq_stats, 0,
+               sizeof(s->txq_descr[i].txq_stats));
+
+        /* Fill device-managed parameters for queues */
+        VMXNET3_WRITE_TX_QUEUE_DESCR32(qdescr_pa,
+                                       ctrl.txThreshold,
+                                       VMXNET3_DEF_TX_THRESHOLD);
+    }
+
+    /* Preallocate TX packet wrapper */
+    VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
+    vmxnet_tx_pkt_init(&s->tx_pkt, s->max_tx_frags, s->peer_has_vhdr);
+    vmxnet_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
+
+    /* Read rings memory locations for RX queues */
+    for (i = 0; i < s->rxq_num; i++) {
+        int j;
+        hwaddr qd_pa =
+            qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
+            i * sizeof(struct Vmxnet3_RxQueueDesc);
+
+        /* Read interrupt number for this RX queue */
+        s->rxq_descr[i].intr_idx =
+            VMXNET3_READ_TX_QUEUE_DESCR8(qd_pa, conf.intrIdx);
+        assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
+
+        VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
+
+        /* Read rings memory locations */
+        for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
+            /* RX rings */
+            pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.rxRingBasePA[j]);
+            size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.rxRingSize[j]);
+            vmxnet3_ring_init(&s->rxq_descr[i].rx_ring[j], pa, size,
+                              sizeof(struct Vmxnet3_RxDesc), false);
+            VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
+                      i, j, pa, size);
+        }
+
+        /* RXC ring */
+        pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.compRingBasePA);
+        size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.compRingSize);
+        vmxnet3_ring_init(&s->rxq_descr[i].comp_ring, pa, size,
+                          sizeof(struct Vmxnet3_RxCompDesc), true);
+        VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
+
+        s->rxq_descr[i].rx_stats_pa =
+            qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
+        memset(&s->rxq_descr[i].rxq_stats, 0,
+               sizeof(s->rxq_descr[i].rxq_stats));
+    }
+
+    vmxnet3_validate_interrupts(s);
+
+    /* Make sure everything is in place before device activation */
+    smp_wmb();
+
+    vmxnet3_reset_mac(s);
+
+    s->device_active = true;
+}
+
+static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
+{
+    s->last_command = cmd;
+
+    switch (cmd) {
+    case VMXNET3_CMD_GET_PERM_MAC_HI:
+        VMW_CBPRN("Set: Get upper part of permanent MAC");
+        break;
+
+    case VMXNET3_CMD_GET_PERM_MAC_LO:
+        VMW_CBPRN("Set: Get lower part of permanent MAC");
+        break;
+
+    case VMXNET3_CMD_GET_STATS:
+        VMW_CBPRN("Set: Get device statistics");
+        vmxnet3_fill_stats(s);
+        break;
+
+    case VMXNET3_CMD_ACTIVATE_DEV:
+        VMW_CBPRN("Set: Activating vmxnet3 device");
+        vmxnet3_activate_device(s);
+        break;
+
+    case VMXNET3_CMD_UPDATE_RX_MODE:
+        VMW_CBPRN("Set: Update rx mode");
+        vmxnet3_update_rx_mode(s);
+        break;
+
+    case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
+        VMW_CBPRN("Set: Update VLAN filters");
+        vmxnet3_update_vlan_filters(s);
+        break;
+
+    case VMXNET3_CMD_UPDATE_MAC_FILTERS:
+        VMW_CBPRN("Set: Update MAC filters");
+        vmxnet3_update_mcast_filters(s);
+        break;
+
+    case VMXNET3_CMD_UPDATE_FEATURE:
+        VMW_CBPRN("Set: Update features");
+        vmxnet3_update_features(s);
+        break;
+
+    case VMXNET3_CMD_UPDATE_PMCFG:
+        VMW_CBPRN("Set: Update power management config");
+        vmxnet3_update_pm_state(s);
+        break;
+
+    case VMXNET3_CMD_GET_LINK:
+        VMW_CBPRN("Set: Get link");
+        break;
+
+    case VMXNET3_CMD_RESET_DEV:
+        VMW_CBPRN("Set: Reset device");
+        vmxnet3_reset(s);
+        break;
+
+    case VMXNET3_CMD_QUIESCE_DEV:
+        VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - pause the device");
+        vmxnet3_deactivate_device(s);
+        break;
+
+    case VMXNET3_CMD_GET_CONF_INTR:
+        VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
+        break;
+
+    default:
+        VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
+        break;
+    }
+}
+
+static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
+{
+    uint64_t ret;
+
+    switch (s->last_command) {
+    case VMXNET3_CMD_ACTIVATE_DEV:
+        ret = (s->device_active) ? 0 : -1;
+        VMW_CFPRN("Device active: %" PRIx64, ret);
+        break;
+
+    case VMXNET3_CMD_RESET_DEV:
+    case VMXNET3_CMD_QUIESCE_DEV:
+    case VMXNET3_CMD_GET_QUEUE_STATUS:
+        ret = 0;
+        break;
+
+    case VMXNET3_CMD_GET_LINK:
+        ret = s->link_status_and_speed;
+        VMW_CFPRN("Link and speed: %" PRIx64, ret);
+        break;
+
+    case VMXNET3_CMD_GET_PERM_MAC_LO:
+        ret = vmxnet3_get_mac_low(&s->perm_mac);
+        break;
+
+    case VMXNET3_CMD_GET_PERM_MAC_HI:
+        ret = vmxnet3_get_mac_high(&s->perm_mac);
+        break;
+
+    case VMXNET3_CMD_GET_CONF_INTR:
+        ret = vmxnet3_get_interrupt_config(s);
+        break;
+
+    default:
+        VMW_WRPRN("Received request for unknown command: %x", s->last_command);
+        ret = -1;
+        break;
+    }
+
+    return ret;
+}
+
+static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
+{
+    uint32_t events;
+
+    VMW_CBPRN("Setting events: 0x%x", val);
+    events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) | val;
+    VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
+}
+
+static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
+{
+    uint32_t events;
+
+    VMW_CBPRN("Clearing events: 0x%x", val);
+    events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) & ~val;
+    VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
+}
+
+static void
+vmxnet3_io_bar1_write(void *opaque,
+                      hwaddr addr,
+                      uint64_t val,
+                      unsigned size)
+{
+    VMXNET3State *s = opaque;
+
+    switch (addr) {
+    /* Vmxnet3 Revision Report Selection */
+    case VMXNET3_REG_VRRS:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
+                  val, size);
+        break;
+
+    /* UPT Version Report Selection */
+    case VMXNET3_REG_UVRS:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
+                  val, size);
+        break;
+
+    /* Driver Shared Address Low */
+    case VMXNET3_REG_DSAL:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
+                  val, size);
+        /*
+         * Guest driver will first write the low part of the shared
+         * memory address. We save it to temp variable and set the
+         * shared address only after we get the high part
+         */
+        if (val == 0) {
+            s->device_active = false;
+        }
+        s->temp_shared_guest_driver_memory = val;
+        s->drv_shmem = 0;
+        break;
+
+    /* Driver Shared Address High */
+    case VMXNET3_REG_DSAH:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
+                  val, size);
+        /*
+         * Set the shared memory between guest driver and device.
+         * We already should have low address part.
+         */
+        s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
+        break;
+
+    /* Command */
+    case VMXNET3_REG_CMD:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
+                  val, size);
+        vmxnet3_handle_command(s, val);
+        break;
+
+    /* MAC Address Low */
+    case VMXNET3_REG_MACL:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
+                  val, size);
+        s->temp_mac = val;
+        break;
+
+    /* MAC Address High */
+    case VMXNET3_REG_MACH:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
+                  val, size);
+        vmxnet3_set_variable_mac(s, val, s->temp_mac);
+        break;
+
+    /* Interrupt Cause Register */
+    case VMXNET3_REG_ICR:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
+                  val, size);
+        g_assert_not_reached();
+        break;
+
+    /* Event Cause Register */
+    case VMXNET3_REG_ECR:
+        VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
+                  val, size);
+        vmxnet3_ack_events(s, val);
+        break;
+
+    default:
+        VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
+                  addr, val, size);
+        break;
+    }
+}
+
+static uint64_t
+vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
+{
+        VMXNET3State *s = opaque;
+        uint64_t ret = 0;
+
+        switch (addr) {
+        /* Vmxnet3 Revision Report Selection */
+        case VMXNET3_REG_VRRS:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
+            ret = VMXNET3_DEVICE_REVISION;
+            break;
+
+        /* UPT Version Report Selection */
+        case VMXNET3_REG_UVRS:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
+            ret = VMXNET3_DEVICE_VERSION;
+            break;
+
+        /* Command */
+        case VMXNET3_REG_CMD:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
+            ret = vmxnet3_get_command_status(s);
+            break;
+
+        /* MAC Address Low */
+        case VMXNET3_REG_MACL:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
+            ret = vmxnet3_get_mac_low(&s->conf.macaddr);
+            break;
+
+        /* MAC Address High */
+        case VMXNET3_REG_MACH:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
+            ret = vmxnet3_get_mac_high(&s->conf.macaddr);
+            break;
+
+        /*
+         * Interrupt Cause Register
+         * Used for legacy interrupts only so interrupt index always 0
+         */
+        case VMXNET3_REG_ICR:
+            VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
+            if (vmxnet3_interrupt_asserted(s, 0)) {
+                vmxnet3_clear_interrupt(s, 0);
+                ret = true;
+            } else {
+                ret = false;
+            }
+            break;
+
+        default:
+            VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
+            break;
+        }
+
+        return ret;
+}
+
+static int
+vmxnet3_can_receive(NetClientState *nc)
+{
+    VMXNET3State *s = qemu_get_nic_opaque(nc);
+    return s->device_active &&
+           VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
+}
+
+static inline bool
+vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
+{
+    uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
+    if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
+        return true;
+    }
+
+    return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
+}
+
+static bool
+vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
+{
+    int i;
+    for (i = 0; i < s->mcast_list_len; i++) {
+        if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
+            return true;
+        }
+    }
+    return false;
+}
+
+static bool
+vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
+    size_t size)
+{
+    struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
+
+    if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
+        return true;
+    }
+
+    if (!vmxnet3_is_registered_vlan(s, data)) {
+        return false;
+    }
+
+    switch (vmxnet_rx_pkt_get_packet_type(s->rx_pkt)) {
+    case ETH_PKT_UCAST:
+        if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
+            return false;
+        }
+        if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
+            return false;
+        }
+        break;
+
+    case ETH_PKT_BCAST:
+        if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
+            return false;
+        }
+        break;
+
+    case ETH_PKT_MCAST:
+        if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
+            return true;
+        }
+        if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
+            return false;
+        }
+        if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
+            return false;
+        }
+        break;
+
+    default:
+        g_assert_not_reached();
+    }
+
+    return true;
+}
+
+static ssize_t
+vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
+{
+    VMXNET3State *s = qemu_get_nic_opaque(nc);
+    size_t bytes_indicated;
+    uint8_t min_buf[MIN_BUF_SIZE];
+
+    if (!vmxnet3_can_receive(nc)) {
+        VMW_PKPRN("Cannot receive now");
+        return -1;
+    }
+
+    if (s->peer_has_vhdr) {
+        vmxnet_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
+        buf += sizeof(struct virtio_net_hdr);
+        size -= sizeof(struct virtio_net_hdr);
+    }
+
+    /* Pad to minimum Ethernet frame length */
+    if (size < sizeof(min_buf)) {
+        memcpy(min_buf, buf, size);
+        memset(&min_buf[size], 0, sizeof(min_buf) - size);
+        buf = min_buf;
+        size = sizeof(min_buf);
+    }
+
+    vmxnet_rx_pkt_set_packet_type(s->rx_pkt,
+        get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
+
+    if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
+        vmxnet_rx_pkt_set_protocols(s->rx_pkt, buf, size);
+        vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
+        vmxnet_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
+        bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
+        if (bytes_indicated < size) {
+            VMW_PKPRN("RX: %lu of %lu bytes indicated", bytes_indicated, size);
+        }
+    } else {
+        VMW_PKPRN("Packet dropped by RX filter");
+        bytes_indicated = size;
+    }
+
+    assert(size > 0);
+    assert(bytes_indicated != 0);
+    return bytes_indicated;
+}
+
+static void vmxnet3_set_link_status(NetClientState *nc)
+{
+    VMXNET3State *s = qemu_get_nic_opaque(nc);
+
+    if (nc->link_down) {
+        s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
+    } else {
+        s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
+    }
+
+    vmxnet3_set_events(s, VMXNET3_ECR_LINK);
+    vmxnet3_trigger_interrupt(s, s->event_int_idx);
+}
+
+static NetClientInfo net_vmxnet3_info = {
+        .type = NET_CLIENT_OPTIONS_KIND_NIC,
+        .size = sizeof(NICState),
+        .can_receive = vmxnet3_can_receive,
+        .receive = vmxnet3_receive,
+        .link_status_changed = vmxnet3_set_link_status,
+};
+
+static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
+{
+    NetClientState *nc = qemu_get_queue(s->nic);
+
+    if (qemu_has_vnet_hdr(nc->peer)) {
+        return true;
+    }
+
+    VMW_WRPRN("Peer has no virtio extension. Task offloads will be emulated.");
+    return false;
+}
+
+static void vmxnet3_net_uninit(VMXNET3State *s)
+{
+    g_free(s->mcast_list);
+    vmxnet_tx_pkt_reset(s->tx_pkt);
+    vmxnet_tx_pkt_uninit(s->tx_pkt);
+    vmxnet_rx_pkt_uninit(s->rx_pkt);
+    qemu_del_nic(s->nic);
+}
+
+static void vmxnet3_net_init(VMXNET3State *s)
+{
+    DeviceState *d = DEVICE(s);
+
+    VMW_CBPRN("vmxnet3_net_init called...");
+
+    qemu_macaddr_default_if_unset(&s->conf.macaddr);
+
+    /* Windows guest will query the address that was set on init */
+    memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
+
+    s->mcast_list = NULL;
+    s->mcast_list_len = 0;
+
+    s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
+
+    VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
+
+    s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
+                          object_get_typename(OBJECT(s)),
+                          d->id, s);
+
+    s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
+    s->tx_sop = true;
+    s->skip_current_tx_pkt = false;
+    s->tx_pkt = NULL;
+    s->rx_pkt = NULL;
+    s->rx_vlan_stripping = false;
+    s->lro_supported = false;
+
+    if (s->peer_has_vhdr) {
+        qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
+            sizeof(struct virtio_net_hdr));
+
+        qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
+    }
+
+    qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
+}
+
+static void
+vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+    int i;
+    for (i = 0; i < num_vectors; i++) {
+        msix_vector_unuse(d, i);
+    }
+}
+
+static bool
+vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+    int i;
+    for (i = 0; i < num_vectors; i++) {
+        int res = msix_vector_use(d, i);
+        if (0 > res) {
+            VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
+            vmxnet3_unuse_msix_vectors(s, i);
+            return false;
+        }
+    }
+    return true;
+}
+
+static bool
+vmxnet3_init_msix(VMXNET3State *s)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+    int res = msix_init(d, VMXNET3_MAX_INTRS,
+                        &s->msix_bar,
+                        VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
+                        &s->msix_bar,
+                        VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA,
+                        0);
+
+    if (0 > res) {
+        VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
+        s->msix_used = false;
+    } else {
+        if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
+            VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
+            msix_uninit(d, &s->msix_bar, &s->msix_bar);
+            s->msix_used = false;
+        } else {
+            s->msix_used = true;
+        }
+    }
+    return s->msix_used;
+}
+
+static void
+vmxnet3_cleanup_msix(VMXNET3State *s)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+
+    if (s->msix_used) {
+        vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
+        msix_uninit(d, &s->msix_bar, &s->msix_bar);
+    }
+}
+
+#define VMXNET3_MSI_OFFSET        (0x50)
+#define VMXNET3_USE_64BIT         (true)
+#define VMXNET3_PER_VECTOR_MASK   (false)
+
+static bool
+vmxnet3_init_msi(VMXNET3State *s)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+    int res;
+
+    res = msi_init(d, VMXNET3_MSI_OFFSET, VMXNET3_MAX_NMSIX_INTRS,
+                   VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK);
+    if (0 > res) {
+        VMW_WRPRN("Failed to initialize MSI, error %d", res);
+        s->msi_used = false;
+    } else {
+        s->msi_used = true;
+    }
+
+    return s->msi_used;
+}
+
+static void
+vmxnet3_cleanup_msi(VMXNET3State *s)
+{
+    PCIDevice *d = PCI_DEVICE(s);
+
+    if (s->msi_used) {
+        msi_uninit(d);
+    }
+}
+
+static void
+vmxnet3_msix_save(QEMUFile *f, void *opaque)
+{
+    PCIDevice *d = PCI_DEVICE(opaque);
+    msix_save(d, f);
+}
+
+static int
+vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
+{
+    PCIDevice *d = PCI_DEVICE(opaque);
+    msix_load(d, f);
+    return 0;
+}
+
+static const MemoryRegionOps b0_ops = {
+    .read = vmxnet3_io_bar0_read,
+    .write = vmxnet3_io_bar0_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .impl = {
+            .min_access_size = 4,
+            .max_access_size = 4,
+    },
+};
+
+static const MemoryRegionOps b1_ops = {
+    .read = vmxnet3_io_bar1_read,
+    .write = vmxnet3_io_bar1_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .impl = {
+            .min_access_size = 4,
+            .max_access_size = 4,
+    },
+};
+
+static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
+{
+    DeviceState *dev = DEVICE(pci_dev);
+    VMXNET3State *s = VMXNET3(pci_dev);
+
+    VMW_CBPRN("Starting init...");
+
+    memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
+                          "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
+    pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
+                     PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
+
+    memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
+                          "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
+    pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
+                     PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
+
+    memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
+                       VMXNET3_MSIX_BAR_SIZE);
+    pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
+                     PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
+
+    vmxnet3_reset_interrupt_states(s);
+
+    /* Interrupt pin A */
+    pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
+
+    if (!vmxnet3_init_msix(s)) {
+        VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
+    }
+
+    if (!vmxnet3_init_msi(s)) {
+        VMW_WRPRN("Failed to initialize MSI, configuration is inconsistent.");
+    }
+
+    vmxnet3_net_init(s);
+
+    register_savevm(dev, "vmxnet3-msix", -1, 1,
+                    vmxnet3_msix_save, vmxnet3_msix_load, s);
+}
+
+static void vmxnet3_instance_init(Object *obj)
+{
+    VMXNET3State *s = VMXNET3(obj);
+    device_add_bootindex_property(obj, &s->conf.bootindex,
+                                  "bootindex", "/ethernet-phy@0",
+                                  DEVICE(obj), NULL);
+}
+
+static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
+{
+    DeviceState *dev = DEVICE(pci_dev);
+    VMXNET3State *s = VMXNET3(pci_dev);
+
+    VMW_CBPRN("Starting uninit...");
+
+    unregister_savevm(dev, "vmxnet3-msix", s);
+
+    vmxnet3_net_uninit(s);
+
+    vmxnet3_cleanup_msix(s);
+
+    vmxnet3_cleanup_msi(s);
+}
+
+static void vmxnet3_qdev_reset(DeviceState *dev)
+{
+    PCIDevice *d = PCI_DEVICE(dev);
+    VMXNET3State *s = VMXNET3(d);
+
+    VMW_CBPRN("Starting QDEV reset...");
+    vmxnet3_reset(s);
+}
+
+static bool vmxnet3_mc_list_needed(void *opaque)
+{
+    return true;
+}
+
+static int vmxnet3_mcast_list_pre_load(void *opaque)
+{
+    VMXNET3State *s = opaque;
+
+    s->mcast_list = g_malloc(s->mcast_list_buff_size);
+
+    return 0;
+}
+
+
+static void vmxnet3_pre_save(void *opaque)
+{
+    VMXNET3State *s = opaque;
+
+    s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
+}
+
+static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
+    .name = "vmxnet3/mcast_list",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .pre_load = vmxnet3_mcast_list_pre_load,
+    .needed = vmxnet3_mc_list_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL, 0,
+            mcast_list_buff_size),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void vmxnet3_get_ring_from_file(QEMUFile *f, Vmxnet3Ring *r)
+{
+    r->pa = qemu_get_be64(f);
+    r->size = qemu_get_be32(f);
+    r->cell_size = qemu_get_be32(f);
+    r->next = qemu_get_be32(f);
+    r->gen = qemu_get_byte(f);
+}
+
+static void vmxnet3_put_ring_to_file(QEMUFile *f, Vmxnet3Ring *r)
+{
+    qemu_put_be64(f, r->pa);
+    qemu_put_be32(f, r->size);
+    qemu_put_be32(f, r->cell_size);
+    qemu_put_be32(f, r->next);
+    qemu_put_byte(f, r->gen);
+}
+
+static void vmxnet3_get_tx_stats_from_file(QEMUFile *f,
+    struct UPT1_TxStats *tx_stat)
+{
+    tx_stat->TSOPktsTxOK = qemu_get_be64(f);
+    tx_stat->TSOBytesTxOK = qemu_get_be64(f);
+    tx_stat->ucastPktsTxOK = qemu_get_be64(f);
+    tx_stat->ucastBytesTxOK = qemu_get_be64(f);
+    tx_stat->mcastPktsTxOK = qemu_get_be64(f);
+    tx_stat->mcastBytesTxOK = qemu_get_be64(f);
+    tx_stat->bcastPktsTxOK = qemu_get_be64(f);
+    tx_stat->bcastBytesTxOK = qemu_get_be64(f);
+    tx_stat->pktsTxError = qemu_get_be64(f);
+    tx_stat->pktsTxDiscard = qemu_get_be64(f);
+}
+
+static void vmxnet3_put_tx_stats_to_file(QEMUFile *f,
+    struct UPT1_TxStats *tx_stat)
+{
+    qemu_put_be64(f, tx_stat->TSOPktsTxOK);
+    qemu_put_be64(f, tx_stat->TSOBytesTxOK);
+    qemu_put_be64(f, tx_stat->ucastPktsTxOK);
+    qemu_put_be64(f, tx_stat->ucastBytesTxOK);
+    qemu_put_be64(f, tx_stat->mcastPktsTxOK);
+    qemu_put_be64(f, tx_stat->mcastBytesTxOK);
+    qemu_put_be64(f, tx_stat->bcastPktsTxOK);
+    qemu_put_be64(f, tx_stat->bcastBytesTxOK);
+    qemu_put_be64(f, tx_stat->pktsTxError);
+    qemu_put_be64(f, tx_stat->pktsTxDiscard);
+}
+
+static int vmxnet3_get_txq_descr(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3TxqDescr *r = pv;
+
+    vmxnet3_get_ring_from_file(f, &r->tx_ring);
+    vmxnet3_get_ring_from_file(f, &r->comp_ring);
+    r->intr_idx = qemu_get_byte(f);
+    r->tx_stats_pa = qemu_get_be64(f);
+
+    vmxnet3_get_tx_stats_from_file(f, &r->txq_stats);
+
+    return 0;
+}
+
+static void vmxnet3_put_txq_descr(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3TxqDescr *r = pv;
+
+    vmxnet3_put_ring_to_file(f, &r->tx_ring);
+    vmxnet3_put_ring_to_file(f, &r->comp_ring);
+    qemu_put_byte(f, r->intr_idx);
+    qemu_put_be64(f, r->tx_stats_pa);
+    vmxnet3_put_tx_stats_to_file(f, &r->txq_stats);
+}
+
+static const VMStateInfo txq_descr_info = {
+    .name = "txq_descr",
+    .get = vmxnet3_get_txq_descr,
+    .put = vmxnet3_put_txq_descr
+};
+
+static void vmxnet3_get_rx_stats_from_file(QEMUFile *f,
+    struct UPT1_RxStats *rx_stat)
+{
+    rx_stat->LROPktsRxOK = qemu_get_be64(f);
+    rx_stat->LROBytesRxOK = qemu_get_be64(f);
+    rx_stat->ucastPktsRxOK = qemu_get_be64(f);
+    rx_stat->ucastBytesRxOK = qemu_get_be64(f);
+    rx_stat->mcastPktsRxOK = qemu_get_be64(f);
+    rx_stat->mcastBytesRxOK = qemu_get_be64(f);
+    rx_stat->bcastPktsRxOK = qemu_get_be64(f);
+    rx_stat->bcastBytesRxOK = qemu_get_be64(f);
+    rx_stat->pktsRxOutOfBuf = qemu_get_be64(f);
+    rx_stat->pktsRxError = qemu_get_be64(f);
+}
+
+static void vmxnet3_put_rx_stats_to_file(QEMUFile *f,
+    struct UPT1_RxStats *rx_stat)
+{
+    qemu_put_be64(f, rx_stat->LROPktsRxOK);
+    qemu_put_be64(f, rx_stat->LROBytesRxOK);
+    qemu_put_be64(f, rx_stat->ucastPktsRxOK);
+    qemu_put_be64(f, rx_stat->ucastBytesRxOK);
+    qemu_put_be64(f, rx_stat->mcastPktsRxOK);
+    qemu_put_be64(f, rx_stat->mcastBytesRxOK);
+    qemu_put_be64(f, rx_stat->bcastPktsRxOK);
+    qemu_put_be64(f, rx_stat->bcastBytesRxOK);
+    qemu_put_be64(f, rx_stat->pktsRxOutOfBuf);
+    qemu_put_be64(f, rx_stat->pktsRxError);
+}
+
+static int vmxnet3_get_rxq_descr(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3RxqDescr *r = pv;
+    int i;
+
+    for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
+        vmxnet3_get_ring_from_file(f, &r->rx_ring[i]);
+    }
+
+    vmxnet3_get_ring_from_file(f, &r->comp_ring);
+    r->intr_idx = qemu_get_byte(f);
+    r->rx_stats_pa = qemu_get_be64(f);
+
+    vmxnet3_get_rx_stats_from_file(f, &r->rxq_stats);
+
+    return 0;
+}
+
+static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3RxqDescr *r = pv;
+    int i;
+
+    for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
+        vmxnet3_put_ring_to_file(f, &r->rx_ring[i]);
+    }
+
+    vmxnet3_put_ring_to_file(f, &r->comp_ring);
+    qemu_put_byte(f, r->intr_idx);
+    qemu_put_be64(f, r->rx_stats_pa);
+    vmxnet3_put_rx_stats_to_file(f, &r->rxq_stats);
+}
+
+static int vmxnet3_post_load(void *opaque, int version_id)
+{
+    VMXNET3State *s = opaque;
+    PCIDevice *d = PCI_DEVICE(s);
+
+    vmxnet_tx_pkt_init(&s->tx_pkt, s->max_tx_frags, s->peer_has_vhdr);
+    vmxnet_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
+
+    if (s->msix_used) {
+        if  (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
+            VMW_WRPRN("Failed to re-use MSI-X vectors");
+            msix_uninit(d, &s->msix_bar, &s->msix_bar);
+            s->msix_used = false;
+            return -1;
+        }
+    }
+
+    vmxnet3_validate_queues(s);
+    vmxnet3_validate_interrupts(s);
+
+    return 0;
+}
+
+static const VMStateInfo rxq_descr_info = {
+    .name = "rxq_descr",
+    .get = vmxnet3_get_rxq_descr,
+    .put = vmxnet3_put_rxq_descr
+};
+
+static int vmxnet3_get_int_state(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3IntState *r = pv;
+
+    r->is_masked = qemu_get_byte(f);
+    r->is_pending = qemu_get_byte(f);
+    r->is_asserted = qemu_get_byte(f);
+
+    return 0;
+}
+
+static void vmxnet3_put_int_state(QEMUFile *f, void *pv, size_t size)
+{
+    Vmxnet3IntState *r = pv;
+
+    qemu_put_byte(f, r->is_masked);
+    qemu_put_byte(f, r->is_pending);
+    qemu_put_byte(f, r->is_asserted);
+}
+
+static const VMStateInfo int_state_info = {
+    .name = "int_state",
+    .get = vmxnet3_get_int_state,
+    .put = vmxnet3_put_int_state
+};
+
+static const VMStateDescription vmstate_vmxnet3 = {
+    .name = "vmxnet3",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .pre_save = vmxnet3_pre_save,
+    .post_load = vmxnet3_post_load,
+    .fields = (VMStateField[]) {
+            VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
+            VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
+            VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
+            VMSTATE_BOOL(lro_supported, VMXNET3State),
+            VMSTATE_UINT32(rx_mode, VMXNET3State),
+            VMSTATE_UINT32(mcast_list_len, VMXNET3State),
+            VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
+            VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
+            VMSTATE_UINT32(mtu, VMXNET3State),
+            VMSTATE_UINT16(max_rx_frags, VMXNET3State),
+            VMSTATE_UINT32(max_tx_frags, VMXNET3State),
+            VMSTATE_UINT8(event_int_idx, VMXNET3State),
+            VMSTATE_BOOL(auto_int_masking, VMXNET3State),
+            VMSTATE_UINT8(txq_num, VMXNET3State),
+            VMSTATE_UINT8(rxq_num, VMXNET3State),
+            VMSTATE_UINT32(device_active, VMXNET3State),
+            VMSTATE_UINT32(last_command, VMXNET3State),
+            VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
+            VMSTATE_UINT32(temp_mac, VMXNET3State),
+            VMSTATE_UINT64(drv_shmem, VMXNET3State),
+            VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
+
+            VMSTATE_ARRAY(txq_descr, VMXNET3State,
+                VMXNET3_DEVICE_MAX_TX_QUEUES, 0, txq_descr_info,
+                Vmxnet3TxqDescr),
+            VMSTATE_ARRAY(rxq_descr, VMXNET3State,
+                VMXNET3_DEVICE_MAX_RX_QUEUES, 0, rxq_descr_info,
+                Vmxnet3RxqDescr),
+            VMSTATE_ARRAY(interrupt_states, VMXNET3State, VMXNET3_MAX_INTRS,
+                0, int_state_info, Vmxnet3IntState),
+
+            VMSTATE_END_OF_LIST()
+    },
+    .subsections = (const VMStateDescription*[]) {
+        &vmxstate_vmxnet3_mcast_list,
+        NULL
+    }
+};
+
+static Property vmxnet3_properties[] = {
+    DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vmxnet3_class_init(ObjectClass *class, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(class);
+    PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
+
+    c->realize = vmxnet3_pci_realize;
+    c->exit = vmxnet3_pci_uninit;
+    c->vendor_id = PCI_VENDOR_ID_VMWARE;
+    c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
+    c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
+    c->class_id = PCI_CLASS_NETWORK_ETHERNET;
+    c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
+    c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
+    dc->desc = "VMWare Paravirtualized Ethernet v3";
+    dc->reset = vmxnet3_qdev_reset;
+    dc->vmsd = &vmstate_vmxnet3;
+    dc->props = vmxnet3_properties;
+    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
+}
+
+static const TypeInfo vmxnet3_info = {
+    .name          = TYPE_VMXNET3,
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(VMXNET3State),
+    .class_init    = vmxnet3_class_init,
+    .instance_init = vmxnet3_instance_init,
+};
+
+static void vmxnet3_register_types(void)
+{
+    VMW_CBPRN("vmxnet3_register_types called...");
+    type_register_static(&vmxnet3_info);
+}
+
+type_init(vmxnet3_register_types)