diff options
Diffstat (limited to 'hw/net/vmxnet3.c')
| -rw-r--r-- | hw/net/vmxnet3.c | 2471 |
1 files changed, 2471 insertions, 0 deletions
diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c new file mode 100644 index 0000000000..5f483e7f1e --- /dev/null +++ b/hw/net/vmxnet3.c @@ -0,0 +1,2471 @@ +/* + * 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 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 + +/* 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); + qemu_set_irq(d->irq[int_idx], 1); + 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); + qemu_set_irq(d->irq[lidx], 0); +} + +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: + assert(false); + 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: + assert(false); + } + + 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: + assert(false); + } +} + +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: + assert(false); + } + + if (tot_len > s->mtu) { + stats->LROPktsRxOK++; + stats->LROBytesRxOK += tot_len; + } + break; + default: + assert(false); + } +} + +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); + } +} + +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 (0 != ready_rxcd_pa) { + 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 (0 == bytes_left) { + 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 (0 != ready_rxcd_pa) { + rxcd.eop = 1; + rxcd.err = (0 != bytes_left); + cpu_physical_memory_write(ready_rxcd_pa, &rxcd, sizeof(rxcd)); + + /* Flush RX descriptor changes */ + smp_wmb(); + } + + if (0 != new_rxcd_pa) { + 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)) { + assert(false); + } + + 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 (NULL == s->mcast_list) { + if (0 == s->mcast_list_len) { + 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) { + tap_set_offload(qemu_get_queue(s->nic)->peer, + rxcso_supported, + s->lro_supported, + s->lro_supported, + 0, + 0); + } +} + +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); + 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); + assert(s->txq_num <= VMXNET3_DEVICE_MAX_TX_QUEUES); + + 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); + + 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); + + 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)); + } + + /* 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 (0 == val) { + 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); + assert(false); + 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: + assert(false); + } + + 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; + + 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); + } + + 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_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_cleanup(NetClientState *nc) +{ + VMXNET3State *s = qemu_get_nic_opaque(nc); + s->nic = NULL; +} + +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, + .cleanup = vmxnet3_cleanup, + .link_status_changed = vmxnet3_set_link_status, +}; + +static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s) +{ + NetClientState *peer = qemu_get_queue(s->nic)->peer; + + if ((NULL != peer) && + (peer->info->type == NET_CLIENT_OPTIONS_KIND_TAP) && + tap_has_vnet_hdr(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_net_client(qemu_get_queue(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) { + tap_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer, + sizeof(struct virtio_net_hdr)); + + tap_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) { + msix_vector_unuse(d, VMXNET3_MAX_INTRS); + msix_uninit(d, &s->msix_bar, &s->msix_bar); + } +} + +#define VMXNET3_MSI_NUM_VECTORS (1) +#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_MSI_NUM_VECTORS, + 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 int vmxnet3_pci_init(PCIDevice *pci_dev) +{ + DeviceState *dev = DEVICE(pci_dev); + VMXNET3State *s = VMXNET3(pci_dev); + + VMW_CBPRN("Starting init..."); + + memory_region_init_io(&s->bar0, &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, &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, "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); + + add_boot_device_path(s->conf.bootindex, dev, "/ethernet-phy@0"); + + return 0; +} + + +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); + + memory_region_destroy(&s->bar0); + memory_region_destroy(&s->bar1); + memory_region_destroy(&s->msix_bar); +} + +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, + .minimum_version_id_old = 1, + .pre_load = vmxnet3_mcast_list_pre_load, + .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); +} + +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; + } + } + + return 0; +} + +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); +} + +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, + .minimum_version_id_old = 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 = (VMStateSubsection[]) { + { + .vmsd = &vmxstate_vmxnet3_mcast_list, + .needed = vmxnet3_mc_list_needed + }, + { + /* empty element. */ + } + } +}; + +static void +vmxnet3_write_config(PCIDevice *pci_dev, uint32_t addr, uint32_t val, int len) +{ + pci_default_write_config(pci_dev, addr, val, len); + msix_write_config(pci_dev, addr, val, len); + msi_write_config(pci_dev, addr, val, len); +} + +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->init = vmxnet3_pci_init; + 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; + c->config_write = vmxnet3_write_config, + dc->desc = "VMWare Paravirtualized Ethernet v3"; + dc->reset = vmxnet3_qdev_reset; + dc->vmsd = &vmstate_vmxnet3; + dc->props = vmxnet3_properties; +} + +static const TypeInfo vmxnet3_info = { + .name = TYPE_VMXNET3, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(VMXNET3State), + .class_init = vmxnet3_class_init, +}; + +static void vmxnet3_register_types(void) +{ + VMW_CBPRN("vmxnet3_register_types called..."); + type_register_static(&vmxnet3_info); +} + +type_init(vmxnet3_register_types) |