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qemu/hw/virtio/virtio-qmp.c
Sam Li 4f7366506a virtio-blk: add zoned storage emulation for zoned devices 
This patch extends virtio-blk emulation to handle zoned device commands
by calling the new block layer APIs to perform zoned device I/O on
behalf of the guest. It supports Report Zone, four zone oparations (open,
close, finish, reset), and Append Zone.

The VIRTIO_BLK_F_ZONED feature bit will only be set if the host does
support zoned block devices. Regular block devices(conventional zones)
will not be set.

The guest os can use blktests, fio to test those commands on zoned devices.
Furthermore, using zonefs to test zone append write is also supported.

Signed-off-by: Sam Li <faithilikerun@gmail.com>
Message-id: 20230508051916.178322-2-faithilikerun@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-05-15 08:18:10 -04:00

852 lines
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/*
* Virtio QMP helpers
*
* Copyright IBM, Corp. 2007
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "virtio-qmp.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-virtio.h"
#include "qapi/qapi-commands-qom.h"
#include "qapi/qmp/qobject.h"
#include "qapi/qmp/qjson.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/vhost_types.h"
#include "standard-headers/linux/virtio_blk.h"
#include "standard-headers/linux/virtio_console.h"
#include "standard-headers/linux/virtio_gpu.h"
#include "standard-headers/linux/virtio_net.h"
#include "standard-headers/linux/virtio_scsi.h"
#include "standard-headers/linux/virtio_i2c.h"
#include "standard-headers/linux/virtio_balloon.h"
#include "standard-headers/linux/virtio_iommu.h"
#include "standard-headers/linux/virtio_mem.h"
#include "standard-headers/linux/virtio_vsock.h"
#include CONFIG_DEVICES
#define FEATURE_ENTRY(name, desc) (qmp_virtio_feature_map_t) \
{ .virtio_bit = name, .feature_desc = desc }
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
VHOST_USER_PROTOCOL_F_RARP = 2,
VHOST_USER_PROTOCOL_F_REPLY_ACK = 3,
VHOST_USER_PROTOCOL_F_NET_MTU = 4,
VHOST_USER_PROTOCOL_F_BACKEND_REQ = 5,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
VHOST_USER_PROTOCOL_F_CRYPTO_SESSION = 7,
VHOST_USER_PROTOCOL_F_PAGEFAULT = 8,
VHOST_USER_PROTOCOL_F_CONFIG = 9,
VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD = 10,
VHOST_USER_PROTOCOL_F_HOST_NOTIFIER = 11,
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12,
VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13,
VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS = 14,
VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15,
VHOST_USER_PROTOCOL_F_MAX
};
/* Virtio transport features mapping */
static const qmp_virtio_feature_map_t virtio_transport_map[] = {
/* Virtio device transport features */
#ifndef VIRTIO_CONFIG_NO_LEGACY
FEATURE_ENTRY(VIRTIO_F_NOTIFY_ON_EMPTY, \
"VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. "
"descs. on VQ"),
FEATURE_ENTRY(VIRTIO_F_ANY_LAYOUT, \
"VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts"),
#endif /* !VIRTIO_CONFIG_NO_LEGACY */
FEATURE_ENTRY(VIRTIO_F_VERSION_1, \
"VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)"),
FEATURE_ENTRY(VIRTIO_F_IOMMU_PLATFORM, \
"VIRTIO_F_IOMMU_PLATFORM: Device can be used on IOMMU platform"),
FEATURE_ENTRY(VIRTIO_F_RING_PACKED, \
"VIRTIO_F_RING_PACKED: Device supports packed VQ layout"),
FEATURE_ENTRY(VIRTIO_F_IN_ORDER, \
"VIRTIO_F_IN_ORDER: Device uses buffers in same order as made "
"available by driver"),
FEATURE_ENTRY(VIRTIO_F_ORDER_PLATFORM, \
"VIRTIO_F_ORDER_PLATFORM: Memory accesses ordered by platform"),
FEATURE_ENTRY(VIRTIO_F_SR_IOV, \
"VIRTIO_F_SR_IOV: Device supports single root I/O virtualization"),
/* Virtio ring transport features */
FEATURE_ENTRY(VIRTIO_RING_F_INDIRECT_DESC, \
"VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported"),
FEATURE_ENTRY(VIRTIO_RING_F_EVENT_IDX, \
"VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled"),
{ -1, "" }
};
/* Vhost-user protocol features mapping */
static const qmp_virtio_feature_map_t vhost_user_protocol_map[] = {
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_MQ, \
"VHOST_USER_PROTOCOL_F_MQ: Multiqueue protocol supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_LOG_SHMFD, \
"VHOST_USER_PROTOCOL_F_LOG_SHMFD: Shared log memory fd supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_RARP, \
"VHOST_USER_PROTOCOL_F_RARP: Vhost-user back-end RARP broadcasting "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_REPLY_ACK, \
"VHOST_USER_PROTOCOL_F_REPLY_ACK: Requested operation status ack. "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_NET_MTU, \
"VHOST_USER_PROTOCOL_F_NET_MTU: Expose host MTU to guest supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_BACKEND_REQ, \
"VHOST_USER_PROTOCOL_F_BACKEND_REQ: Socket fd for back-end initiated "
"requests supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CROSS_ENDIAN, \
"VHOST_USER_PROTOCOL_F_CROSS_ENDIAN: Endianness of VQs for legacy "
"devices supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CRYPTO_SESSION, \
"VHOST_USER_PROTOCOL_F_CRYPTO_SESSION: Session creation for crypto "
"operations supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_PAGEFAULT, \
"VHOST_USER_PROTOCOL_F_PAGEFAULT: Request servicing on userfaultfd "
"for accessed pages supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CONFIG, \
"VHOST_USER_PROTOCOL_F_CONFIG: Vhost-user messaging for virtio "
"device configuration space supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD, \
"VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD: Slave fd communication "
"channel supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_HOST_NOTIFIER, \
"VHOST_USER_PROTOCOL_F_HOST_NOTIFIER: Host notifiers for specified "
"VQs supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD, \
"VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD: Shared inflight I/O buffers "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_RESET_DEVICE, \
"VHOST_USER_PROTOCOL_F_RESET_DEVICE: Disabling all rings and "
"resetting internal device state supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS, \
"VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS: In-band messaging "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS, \
"VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS: Configuration for "
"memory slots supported"),
{ -1, "" }
};
/* virtio device configuration statuses */
static const qmp_virtio_feature_map_t virtio_config_status_map[] = {
FEATURE_ENTRY(VIRTIO_CONFIG_S_DRIVER_OK, \
"VIRTIO_CONFIG_S_DRIVER_OK: Driver setup and ready"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_FEATURES_OK, \
"VIRTIO_CONFIG_S_FEATURES_OK: Feature negotiation complete"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_DRIVER, \
"VIRTIO_CONFIG_S_DRIVER: Guest OS compatible with device"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_NEEDS_RESET, \
"VIRTIO_CONFIG_S_NEEDS_RESET: Irrecoverable error, device needs "
"reset"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_FAILED, \
"VIRTIO_CONFIG_S_FAILED: Error in guest, device failed"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_ACKNOWLEDGE, \
"VIRTIO_CONFIG_S_ACKNOWLEDGE: Valid virtio device found"),
{ -1, "" }
};
/* virtio-blk features mapping */
#ifdef CONFIG_VIRTIO_BLK
static const qmp_virtio_feature_map_t virtio_blk_feature_map[] = {
FEATURE_ENTRY(VIRTIO_BLK_F_SIZE_MAX, \
"VIRTIO_BLK_F_SIZE_MAX: Max segment size is size_max"),
FEATURE_ENTRY(VIRTIO_BLK_F_SEG_MAX, \
"VIRTIO_BLK_F_SEG_MAX: Max segments in a request is seg_max"),
FEATURE_ENTRY(VIRTIO_BLK_F_GEOMETRY, \
"VIRTIO_BLK_F_GEOMETRY: Legacy geometry available"),
FEATURE_ENTRY(VIRTIO_BLK_F_RO, \
"VIRTIO_BLK_F_RO: Device is read-only"),
FEATURE_ENTRY(VIRTIO_BLK_F_BLK_SIZE, \
"VIRTIO_BLK_F_BLK_SIZE: Block size of disk available"),
FEATURE_ENTRY(VIRTIO_BLK_F_TOPOLOGY, \
"VIRTIO_BLK_F_TOPOLOGY: Topology information available"),
FEATURE_ENTRY(VIRTIO_BLK_F_MQ, \
"VIRTIO_BLK_F_MQ: Multiqueue supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_DISCARD, \
"VIRTIO_BLK_F_DISCARD: Discard command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_WRITE_ZEROES, \
"VIRTIO_BLK_F_WRITE_ZEROES: Write zeroes command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_ZONED, \
"VIRTIO_BLK_F_ZONED: Zoned block devices"),
#ifndef VIRTIO_BLK_NO_LEGACY
FEATURE_ENTRY(VIRTIO_BLK_F_BARRIER, \
"VIRTIO_BLK_F_BARRIER: Request barriers supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_SCSI, \
"VIRTIO_BLK_F_SCSI: SCSI packet commands supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_FLUSH, \
"VIRTIO_BLK_F_FLUSH: Flush command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_CONFIG_WCE, \
"VIRTIO_BLK_F_CONFIG_WCE: Cache writeback and writethrough modes "
"supported"),
#endif /* !VIRTIO_BLK_NO_LEGACY */
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-serial features mapping */
#ifdef CONFIG_VIRTIO_SERIAL
static const qmp_virtio_feature_map_t virtio_serial_feature_map[] = {
FEATURE_ENTRY(VIRTIO_CONSOLE_F_SIZE, \
"VIRTIO_CONSOLE_F_SIZE: Host providing console size"),
FEATURE_ENTRY(VIRTIO_CONSOLE_F_MULTIPORT, \
"VIRTIO_CONSOLE_F_MULTIPORT: Multiple ports for device supported"),
FEATURE_ENTRY(VIRTIO_CONSOLE_F_EMERG_WRITE, \
"VIRTIO_CONSOLE_F_EMERG_WRITE: Emergency write supported"),
{ -1, "" }
};
#endif
/* virtio-gpu features mapping */
#ifdef CONFIG_VIRTIO_GPU
static const qmp_virtio_feature_map_t virtio_gpu_feature_map[] = {
FEATURE_ENTRY(VIRTIO_GPU_F_VIRGL, \
"VIRTIO_GPU_F_VIRGL: Virgl 3D mode supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_EDID, \
"VIRTIO_GPU_F_EDID: EDID metadata supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_RESOURCE_UUID, \
"VIRTIO_GPU_F_RESOURCE_UUID: Resource UUID assigning supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_RESOURCE_BLOB, \
"VIRTIO_GPU_F_RESOURCE_BLOB: Size-based blob resources supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_CONTEXT_INIT, \
"VIRTIO_GPU_F_CONTEXT_INIT: Context types and synchronization "
"timelines supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-input features mapping */
#ifdef CONFIG_VIRTIO_INPUT
static const qmp_virtio_feature_map_t virtio_input_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-net features mapping */
#ifdef CONFIG_VIRTIO_NET
static const qmp_virtio_feature_map_t virtio_net_feature_map[] = {
FEATURE_ENTRY(VIRTIO_NET_F_CSUM, \
"VIRTIO_NET_F_CSUM: Device handling packets with partial checksum "
"supported"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_CSUM, \
"VIRTIO_NET_F_GUEST_CSUM: Driver handling packets with partial "
"checksum supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, \
"VIRTIO_NET_F_CTRL_GUEST_OFFLOADS: Control channel offloading "
"reconfig. supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MTU, \
"VIRTIO_NET_F_MTU: Device max MTU reporting supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MAC, \
"VIRTIO_NET_F_MAC: Device has given MAC address"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_TSO4, \
"VIRTIO_NET_F_GUEST_TSO4: Driver can receive TSOv4"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_TSO6, \
"VIRTIO_NET_F_GUEST_TSO6: Driver can receive TSOv6"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_ECN, \
"VIRTIO_NET_F_GUEST_ECN: Driver can receive TSO with ECN"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_UFO, \
"VIRTIO_NET_F_GUEST_UFO: Driver can receive UFO"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_TSO4, \
"VIRTIO_NET_F_HOST_TSO4: Device can receive TSOv4"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_TSO6, \
"VIRTIO_NET_F_HOST_TSO6: Device can receive TSOv6"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_ECN, \
"VIRTIO_NET_F_HOST_ECN: Device can receive TSO with ECN"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_UFO, \
"VIRTIO_NET_F_HOST_UFO: Device can receive UFO"),
FEATURE_ENTRY(VIRTIO_NET_F_MRG_RXBUF, \
"VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers"),
FEATURE_ENTRY(VIRTIO_NET_F_STATUS, \
"VIRTIO_NET_F_STATUS: Configuration status field available"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_VQ, \
"VIRTIO_NET_F_CTRL_VQ: Control channel available"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_RX, \
"VIRTIO_NET_F_CTRL_RX: Control channel RX mode supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_VLAN, \
"VIRTIO_NET_F_CTRL_VLAN: Control channel VLAN filtering supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_RX_EXTRA, \
"VIRTIO_NET_F_CTRL_RX_EXTRA: Extra RX mode control supported"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_ANNOUNCE, \
"VIRTIO_NET_F_GUEST_ANNOUNCE: Driver sending gratuitous packets "
"supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MQ, \
"VIRTIO_NET_F_MQ: Multiqueue with automatic receive steering "
"supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_MAC_ADDR, \
"VIRTIO_NET_F_CTRL_MAC_ADDR: MAC address set through control "
"channel"),
FEATURE_ENTRY(VIRTIO_NET_F_HASH_REPORT, \
"VIRTIO_NET_F_HASH_REPORT: Hash reporting supported"),
FEATURE_ENTRY(VIRTIO_NET_F_RSS, \
"VIRTIO_NET_F_RSS: RSS RX steering supported"),
FEATURE_ENTRY(VIRTIO_NET_F_RSC_EXT, \
"VIRTIO_NET_F_RSC_EXT: Extended coalescing info supported"),
FEATURE_ENTRY(VIRTIO_NET_F_STANDBY, \
"VIRTIO_NET_F_STANDBY: Device acting as standby for primary "
"device with same MAC addr. supported"),
FEATURE_ENTRY(VIRTIO_NET_F_SPEED_DUPLEX, \
"VIRTIO_NET_F_SPEED_DUPLEX: Device set linkspeed and duplex"),
#ifndef VIRTIO_NET_NO_LEGACY
FEATURE_ENTRY(VIRTIO_NET_F_GSO, \
"VIRTIO_NET_F_GSO: Handling GSO-type packets supported"),
#endif /* !VIRTIO_NET_NO_LEGACY */
FEATURE_ENTRY(VHOST_NET_F_VIRTIO_NET_HDR, \
"VHOST_NET_F_VIRTIO_NET_HDR: Virtio-net headers for RX and TX "
"packets supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-scsi features mapping */
#ifdef CONFIG_VIRTIO_SCSI
static const qmp_virtio_feature_map_t virtio_scsi_feature_map[] = {
FEATURE_ENTRY(VIRTIO_SCSI_F_INOUT, \
"VIRTIO_SCSI_F_INOUT: Requests including read and writable data "
"buffers suppoted"),
FEATURE_ENTRY(VIRTIO_SCSI_F_HOTPLUG, \
"VIRTIO_SCSI_F_HOTPLUG: Reporting and handling hot-plug events "
"supported"),
FEATURE_ENTRY(VIRTIO_SCSI_F_CHANGE, \
"VIRTIO_SCSI_F_CHANGE: Reporting and handling LUN changes "
"supported"),
FEATURE_ENTRY(VIRTIO_SCSI_F_T10_PI, \
"VIRTIO_SCSI_F_T10_PI: T10 info included in request header"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-user-fs features mapping */
#ifdef CONFIG_VHOST_USER_FS
static const qmp_virtio_feature_map_t virtio_fs_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-user-i2c features mapping */
#ifdef CONFIG_VIRTIO_I2C_ADAPTER
static const qmp_virtio_feature_map_t virtio_i2c_feature_map[] = {
FEATURE_ENTRY(VIRTIO_I2C_F_ZERO_LENGTH_REQUEST, \
"VIRTIO_I2C_F_ZERO_LEGNTH_REQUEST: Zero length requests supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-vsock features mapping */
#ifdef CONFIG_VHOST_VSOCK
static const qmp_virtio_feature_map_t virtio_vsock_feature_map[] = {
FEATURE_ENTRY(VIRTIO_VSOCK_F_SEQPACKET, \
"VIRTIO_VSOCK_F_SEQPACKET: SOCK_SEQPACKET supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-balloon features mapping */
#ifdef CONFIG_VIRTIO_BALLOON
static const qmp_virtio_feature_map_t virtio_balloon_feature_map[] = {
FEATURE_ENTRY(VIRTIO_BALLOON_F_MUST_TELL_HOST, \
"VIRTIO_BALLOON_F_MUST_TELL_HOST: Tell host before reclaiming "
"pages"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_STATS_VQ, \
"VIRTIO_BALLOON_F_STATS_VQ: Guest memory stats VQ available"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_DEFLATE_ON_OOM, \
"VIRTIO_BALLOON_F_DEFLATE_ON_OOM: Deflate balloon when guest OOM"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_FREE_PAGE_HINT, \
"VIRTIO_BALLOON_F_FREE_PAGE_HINT: VQ reporting free pages enabled"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_PAGE_POISON, \
"VIRTIO_BALLOON_F_PAGE_POISON: Guest page poisoning enabled"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_REPORTING, \
"VIRTIO_BALLOON_F_REPORTING: Page reporting VQ enabled"),
{ -1, "" }
};
#endif
/* virtio-crypto features mapping */
#ifdef CONFIG_VIRTIO_CRYPTO
static const qmp_virtio_feature_map_t virtio_crypto_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
{ -1, "" }
};
#endif
/* virtio-iommu features mapping */
#ifdef CONFIG_VIRTIO_IOMMU
static const qmp_virtio_feature_map_t virtio_iommu_feature_map[] = {
FEATURE_ENTRY(VIRTIO_IOMMU_F_INPUT_RANGE, \
"VIRTIO_IOMMU_F_INPUT_RANGE: Range of available virtual addrs. "
"available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_DOMAIN_RANGE, \
"VIRTIO_IOMMU_F_DOMAIN_RANGE: Number of supported domains "
"available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_MAP_UNMAP, \
"VIRTIO_IOMMU_F_MAP_UNMAP: Map and unmap requests available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_BYPASS, \
"VIRTIO_IOMMU_F_BYPASS: Endpoints not attached to domains are in "
"bypass mode"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_PROBE, \
"VIRTIO_IOMMU_F_PROBE: Probe requests available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_MMIO, \
"VIRTIO_IOMMU_F_MMIO: VIRTIO_IOMMU_MAP_F_MMIO flag available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_BYPASS_CONFIG, \
"VIRTIO_IOMMU_F_BYPASS_CONFIG: Bypass field of IOMMU config "
"available"),
{ -1, "" }
};
#endif
/* virtio-mem features mapping */
#ifdef CONFIG_VIRTIO_MEM
static const qmp_virtio_feature_map_t virtio_mem_feature_map[] = {
#ifndef CONFIG_ACPI
FEATURE_ENTRY(VIRTIO_MEM_F_ACPI_PXM, \
"VIRTIO_MEM_F_ACPI_PXM: node_id is an ACPI PXM and is valid"),
#endif /* !CONFIG_ACPI */
FEATURE_ENTRY(VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE, \
"VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE: Unplugged memory cannot be "
"accessed"),
{ -1, "" }
};
#endif
/* virtio-rng features mapping */
#ifdef CONFIG_VIRTIO_RNG
static const qmp_virtio_feature_map_t virtio_rng_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
#define CONVERT_FEATURES(type, map, is_status, bitmap) \
({ \
type *list = NULL; \
type *node; \
for (i = 0; map[i].virtio_bit != -1; i++) { \
if (is_status) { \
bit = map[i].virtio_bit; \
} \
else { \
bit = 1ULL << map[i].virtio_bit; \
} \
if ((bitmap & bit) == 0) { \
continue; \
} \
node = g_new0(type, 1); \
node->value = g_strdup(map[i].feature_desc); \
node->next = list; \
list = node; \
bitmap ^= bit; \
} \
list; \
})
VirtioDeviceStatus *qmp_decode_status(uint8_t bitmap)
{
VirtioDeviceStatus *status;
uint8_t bit;
int i;
status = g_new0(VirtioDeviceStatus, 1);
status->statuses = CONVERT_FEATURES(strList, virtio_config_status_map,
1, bitmap);
status->has_unknown_statuses = bitmap != 0;
if (status->has_unknown_statuses) {
status->unknown_statuses = bitmap;
}
return status;
}
VhostDeviceProtocols *qmp_decode_protocols(uint64_t bitmap)
{
VhostDeviceProtocols *vhu_protocols;
uint64_t bit;
int i;
vhu_protocols = g_new0(VhostDeviceProtocols, 1);
vhu_protocols->protocols =
CONVERT_FEATURES(strList,
vhost_user_protocol_map, 0, bitmap);
vhu_protocols->has_unknown_protocols = bitmap != 0;
if (vhu_protocols->has_unknown_protocols) {
vhu_protocols->unknown_protocols = bitmap;
}
return vhu_protocols;
}
VirtioDeviceFeatures *qmp_decode_features(uint16_t device_id, uint64_t bitmap)
{
VirtioDeviceFeatures *features;
uint64_t bit;
int i;
features = g_new0(VirtioDeviceFeatures, 1);
features->has_dev_features = true;
/* transport features */
features->transports = CONVERT_FEATURES(strList, virtio_transport_map, 0,
bitmap);
/* device features */
switch (device_id) {
#ifdef CONFIG_VIRTIO_SERIAL
case VIRTIO_ID_CONSOLE:
features->dev_features =
CONVERT_FEATURES(strList, virtio_serial_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_BLK
case VIRTIO_ID_BLOCK:
features->dev_features =
CONVERT_FEATURES(strList, virtio_blk_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_GPU
case VIRTIO_ID_GPU:
features->dev_features =
CONVERT_FEATURES(strList, virtio_gpu_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_NET
case VIRTIO_ID_NET:
features->dev_features =
CONVERT_FEATURES(strList, virtio_net_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_SCSI
case VIRTIO_ID_SCSI:
features->dev_features =
CONVERT_FEATURES(strList, virtio_scsi_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_BALLOON
case VIRTIO_ID_BALLOON:
features->dev_features =
CONVERT_FEATURES(strList, virtio_balloon_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_IOMMU
case VIRTIO_ID_IOMMU:
features->dev_features =
CONVERT_FEATURES(strList, virtio_iommu_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_INPUT
case VIRTIO_ID_INPUT:
features->dev_features =
CONVERT_FEATURES(strList, virtio_input_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VHOST_USER_FS
case VIRTIO_ID_FS:
features->dev_features =
CONVERT_FEATURES(strList, virtio_fs_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VHOST_VSOCK
case VIRTIO_ID_VSOCK:
features->dev_features =
CONVERT_FEATURES(strList, virtio_vsock_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_CRYPTO
case VIRTIO_ID_CRYPTO:
features->dev_features =
CONVERT_FEATURES(strList, virtio_crypto_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_MEM
case VIRTIO_ID_MEM:
features->dev_features =
CONVERT_FEATURES(strList, virtio_mem_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_I2C_ADAPTER
case VIRTIO_ID_I2C_ADAPTER:
features->dev_features =
CONVERT_FEATURES(strList, virtio_i2c_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_RNG
case VIRTIO_ID_RNG:
features->dev_features =
CONVERT_FEATURES(strList, virtio_rng_feature_map, 0, bitmap);
break;
#endif
/* No features */
case VIRTIO_ID_9P:
case VIRTIO_ID_PMEM:
case VIRTIO_ID_IOMEM:
case VIRTIO_ID_RPMSG:
case VIRTIO_ID_CLOCK:
case VIRTIO_ID_MAC80211_WLAN:
case VIRTIO_ID_MAC80211_HWSIM:
case VIRTIO_ID_RPROC_SERIAL:
case VIRTIO_ID_MEMORY_BALLOON:
case VIRTIO_ID_CAIF:
case VIRTIO_ID_SIGNAL_DIST:
case VIRTIO_ID_PSTORE:
case VIRTIO_ID_SOUND:
case VIRTIO_ID_BT:
case VIRTIO_ID_RPMB:
case VIRTIO_ID_VIDEO_ENCODER:
case VIRTIO_ID_VIDEO_DECODER:
case VIRTIO_ID_SCMI:
case VIRTIO_ID_NITRO_SEC_MOD:
case VIRTIO_ID_WATCHDOG:
case VIRTIO_ID_CAN:
case VIRTIO_ID_DMABUF:
case VIRTIO_ID_PARAM_SERV:
case VIRTIO_ID_AUDIO_POLICY:
case VIRTIO_ID_GPIO:
break;
default:
g_assert_not_reached();
}
features->has_unknown_dev_features = bitmap != 0;
if (features->has_unknown_dev_features) {
features->unknown_dev_features = bitmap;
}
return features;
}
VirtioInfoList *qmp_x_query_virtio(Error **errp)
{
VirtioInfoList *list = NULL;
VirtioInfoList *node;
VirtIODevice *vdev;
QTAILQ_FOREACH(vdev, &virtio_list, next) {
DeviceState *dev = DEVICE(vdev);
Error *err = NULL;
QObject *obj = qmp_qom_get(dev->canonical_path, "realized", &err);
if (err == NULL) {
GString *is_realized = qobject_to_json_pretty(obj, true);
/* virtio device is NOT realized, remove it from list */
if (!strncmp(is_realized->str, "false", 4)) {
QTAILQ_REMOVE(&virtio_list, vdev, next);
} else {
node = g_new0(VirtioInfoList, 1);
node->value = g_new(VirtioInfo, 1);
node->value->path = g_strdup(dev->canonical_path);
node->value->name = g_strdup(vdev->name);
QAPI_LIST_PREPEND(list, node->value);
}
g_string_free(is_realized, true);
}
qobject_unref(obj);
}
return list;
}
VirtIODevice *qmp_find_virtio_device(const char *path)
{
VirtIODevice *vdev;
QTAILQ_FOREACH(vdev, &virtio_list, next) {
DeviceState *dev = DEVICE(vdev);
if (strcmp(dev->canonical_path, path) != 0) {
continue;
}
Error *err = NULL;
QObject *obj = qmp_qom_get(dev->canonical_path, "realized", &err);
if (err == NULL) {
GString *is_realized = qobject_to_json_pretty(obj, true);
/* virtio device is NOT realized, remove it from list */
if (!strncmp(is_realized->str, "false", 4)) {
g_string_free(is_realized, true);
qobject_unref(obj);
QTAILQ_REMOVE(&virtio_list, vdev, next);
return NULL;
}
g_string_free(is_realized, true);
} else {
/* virtio device doesn't exist in QOM tree */
QTAILQ_REMOVE(&virtio_list, vdev, next);
qobject_unref(obj);
return NULL;
}
/* device exists in QOM tree & is realized */
qobject_unref(obj);
return vdev;
}
return NULL;
}
VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
{
VirtIODevice *vdev;
VirtioStatus *status;
vdev = qmp_find_virtio_device(path);
if (vdev == NULL) {
error_setg(errp, "Path %s is not a VirtIODevice", path);
return NULL;
}
status = g_new0(VirtioStatus, 1);
status->name = g_strdup(vdev->name);
status->device_id = vdev->device_id;
status->vhost_started = vdev->vhost_started;
status->guest_features = qmp_decode_features(vdev->device_id,
vdev->guest_features);
status->host_features = qmp_decode_features(vdev->device_id,
vdev->host_features);
status->backend_features = qmp_decode_features(vdev->device_id,
vdev->backend_features);
switch (vdev->device_endian) {
case VIRTIO_DEVICE_ENDIAN_LITTLE:
status->device_endian = g_strdup("little");
break;
case VIRTIO_DEVICE_ENDIAN_BIG:
status->device_endian = g_strdup("big");
break;
default:
status->device_endian = g_strdup("unknown");
break;
}
status->num_vqs = virtio_get_num_queues(vdev);
status->status = qmp_decode_status(vdev->status);
status->isr = vdev->isr;
status->queue_sel = vdev->queue_sel;
status->vm_running = vdev->vm_running;
status->broken = vdev->broken;
status->disabled = vdev->disabled;
status->use_started = vdev->use_started;
status->started = vdev->started;
status->start_on_kick = vdev->start_on_kick;
status->disable_legacy_check = vdev->disable_legacy_check;
status->bus_name = g_strdup(vdev->bus_name);
status->use_guest_notifier_mask = vdev->use_guest_notifier_mask;
if (vdev->vhost_started) {
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
struct vhost_dev *hdev = vdc->get_vhost(vdev);
status->vhost_dev = g_new0(VhostStatus, 1);
status->vhost_dev->n_mem_sections = hdev->n_mem_sections;
status->vhost_dev->n_tmp_sections = hdev->n_tmp_sections;
status->vhost_dev->nvqs = hdev->nvqs;
status->vhost_dev->vq_index = hdev->vq_index;
status->vhost_dev->features =
qmp_decode_features(vdev->device_id, hdev->features);
status->vhost_dev->acked_features =
qmp_decode_features(vdev->device_id, hdev->acked_features);
status->vhost_dev->backend_features =
qmp_decode_features(vdev->device_id, hdev->backend_features);
status->vhost_dev->protocol_features =
qmp_decode_protocols(hdev->protocol_features);
status->vhost_dev->max_queues = hdev->max_queues;
status->vhost_dev->backend_cap = hdev->backend_cap;
status->vhost_dev->log_enabled = hdev->log_enabled;
status->vhost_dev->log_size = hdev->log_size;
}
return status;
}
VirtVhostQueueStatus *qmp_x_query_virtio_vhost_queue_status(const char *path,
uint16_t queue,
Error **errp)
{
VirtIODevice *vdev;
VirtVhostQueueStatus *status;
vdev = qmp_find_virtio_device(path);
if (vdev == NULL) {
error_setg(errp, "Path %s is not a VirtIODevice", path);
return NULL;
}
if (!vdev->vhost_started) {
error_setg(errp, "Error: vhost device has not started yet");
return NULL;
}
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
struct vhost_dev *hdev = vdc->get_vhost(vdev);
if (queue < hdev->vq_index || queue >= hdev->vq_index + hdev->nvqs) {
error_setg(errp, "Invalid vhost virtqueue number %d", queue);
return NULL;
}
status = g_new0(VirtVhostQueueStatus, 1);
status->name = g_strdup(vdev->name);
status->kick = hdev->vqs[queue].kick;
status->call = hdev->vqs[queue].call;
status->desc = (uintptr_t)hdev->vqs[queue].desc;
status->avail = (uintptr_t)hdev->vqs[queue].avail;
status->used = (uintptr_t)hdev->vqs[queue].used;
status->num = hdev->vqs[queue].num;
status->desc_phys = hdev->vqs[queue].desc_phys;
status->desc_size = hdev->vqs[queue].desc_size;
status->avail_phys = hdev->vqs[queue].avail_phys;
status->avail_size = hdev->vqs[queue].avail_size;
status->used_phys = hdev->vqs[queue].used_phys;
status->used_size = hdev->vqs[queue].used_size;
return status;
}
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