* [PATCH 1/2] qapi/virtio: Keep feature and status bits in the QMP output
2023-12-28 18:52 [PATCH 0/2] Adjust the output of x-query-virtio-status Hyman Huang
@ 2023-12-28 18:52 ` Hyman Huang
2023-12-29 9:31 ` Philippe Mathieu-Daudé
2023-12-28 18:52 ` [PATCH 2/2] hmp: Drop unknown feature and status bits Hyman Huang
1 sibling, 1 reply; 5+ messages in thread
From: Hyman Huang @ 2023-12-28 18:52 UTC (permalink / raw)
To: qemu-devel; +Cc: Michael S . Tsirkin, Markus Armbruster, Eric Blake, yong.huang
Maintain the feature and status bits in the x-query-virtio-status
output and, as usual, add human-readable output only in HMP.
Applications may find it useful to compare features and status
information directly. An upper application, for example, could
use the QMP command x-query-virtio-status to retrieve vhost-user
net device features and the "ovs-vsctl list interface" command to
retrieve interface features (in number format) in order to verify
the correctness of the virtio negotiation between guest, QEMU,
and OVS-DPDK. The application could then compare the two features
directly, without the need for additional feature encoding.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
---
hw/virtio/virtio-hmp-cmds.c | 25 +++--
hw/virtio/virtio-qmp.c | 23 ++---
qapi/virtio.json | 192 ++++--------------------------------
3 files changed, 45 insertions(+), 195 deletions(-)
diff --git a/hw/virtio/virtio-hmp-cmds.c b/hw/virtio/virtio-hmp-cmds.c
index 477c97dea2..721c630ab0 100644
--- a/hw/virtio/virtio-hmp-cmds.c
+++ b/hw/virtio/virtio-hmp-cmds.c
@@ -6,6 +6,7 @@
*/
#include "qemu/osdep.h"
+#include "virtio-qmp.h"
#include "monitor/hmp.h"
#include "monitor/monitor.h"
#include "qapi/qapi-commands-virtio.h"
@@ -145,13 +146,17 @@ void hmp_virtio_status(Monitor *mon, const QDict *qdict)
monitor_printf(mon, " endianness: %s\n",
s->device_endian);
monitor_printf(mon, " status:\n");
- hmp_virtio_dump_status(mon, s->status);
+ hmp_virtio_dump_status(mon,
+ qmp_decode_status(s->status));
monitor_printf(mon, " Guest features:\n");
- hmp_virtio_dump_features(mon, s->guest_features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->guest_features));
monitor_printf(mon, " Host features:\n");
- hmp_virtio_dump_features(mon, s->host_features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->host_features));
monitor_printf(mon, " Backend features:\n");
- hmp_virtio_dump_features(mon, s->backend_features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->backend_features));
if (s->vhost_dev) {
monitor_printf(mon, " VHost:\n");
@@ -172,13 +177,17 @@ void hmp_virtio_status(Monitor *mon, const QDict *qdict)
monitor_printf(mon, " log_size: %"PRId64"\n",
s->vhost_dev->log_size);
monitor_printf(mon, " Features:\n");
- hmp_virtio_dump_features(mon, s->vhost_dev->features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->vhost_dev->features));
monitor_printf(mon, " Acked features:\n");
- hmp_virtio_dump_features(mon, s->vhost_dev->acked_features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->vhost_dev->acked_features));
monitor_printf(mon, " Backend features:\n");
- hmp_virtio_dump_features(mon, s->vhost_dev->backend_features);
+ hmp_virtio_dump_features(mon,
+ qmp_decode_features(s->device_id, s->vhost_dev->backend_features));
monitor_printf(mon, " Protocol features:\n");
- hmp_virtio_dump_protocols(mon, s->vhost_dev->protocol_features);
+ hmp_virtio_dump_protocols(mon,
+ qmp_decode_protocols(s->vhost_dev->protocol_features));
}
qapi_free_VirtioStatus(s);
diff --git a/hw/virtio/virtio-qmp.c b/hw/virtio/virtio-qmp.c
index 1dd96ed20f..1660c17653 100644
--- a/hw/virtio/virtio-qmp.c
+++ b/hw/virtio/virtio-qmp.c
@@ -733,12 +733,9 @@ VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
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);
+ status->guest_features = vdev->guest_features;
+ status->host_features = vdev->host_features;
+ status->backend_features = vdev->backend_features;
switch (vdev->device_endian) {
case VIRTIO_DEVICE_ENDIAN_LITTLE:
@@ -753,7 +750,7 @@ VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
}
status->num_vqs = virtio_get_num_queues(vdev);
- status->status = qmp_decode_status(vdev->status);
+ status->status = vdev->status;
status->isr = vdev->isr;
status->queue_sel = vdev->queue_sel;
status->vm_running = vdev->vm_running;
@@ -775,14 +772,10 @@ VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
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->features = hdev->features;
+ status->vhost_dev->acked_features = hdev->acked_features;
+ status->vhost_dev->backend_features = hdev->backend_features;
+ status->vhost_dev->protocol_features = 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;
diff --git a/qapi/virtio.json b/qapi/virtio.json
index 19c7c36e36..26516fb29c 100644
--- a/qapi/virtio.json
+++ b/qapi/virtio.json
@@ -102,10 +102,10 @@
'n-tmp-sections': 'int',
'nvqs': 'uint32',
'vq-index': 'int',
- 'features': 'VirtioDeviceFeatures',
- 'acked-features': 'VirtioDeviceFeatures',
- 'backend-features': 'VirtioDeviceFeatures',
- 'protocol-features': 'VhostDeviceProtocols',
+ 'features': 'uint64',
+ 'acked-features': 'uint64',
+ 'backend-features': 'uint64',
+ 'protocol-features': 'uint64',
'max-queues': 'uint64',
'backend-cap': 'uint64',
'log-enabled': 'bool',
@@ -170,11 +170,11 @@
'device-id': 'uint16',
'vhost-started': 'bool',
'device-endian': 'str',
- 'guest-features': 'VirtioDeviceFeatures',
- 'host-features': 'VirtioDeviceFeatures',
- 'backend-features': 'VirtioDeviceFeatures',
+ 'guest-features': 'uint64',
+ 'host-features': 'uint64',
+ 'backend-features': 'uint64',
'num-vqs': 'int',
- 'status': 'VirtioDeviceStatus',
+ 'status': 'uint8',
'isr': 'uint8',
'queue-sel': 'uint16',
'vm-running': 'bool',
@@ -217,41 +217,14 @@
# "name": "virtio-crypto",
# "started": true,
# "device-id": 20,
-# "backend-features": {
-# "transports": [],
-# "dev-features": []
-# },
+# "backend-features": 0,
# "start-on-kick": false,
# "isr": 1,
# "broken": false,
-# "status": {
-# "statuses": [
-# "VIRTIO_CONFIG_S_ACKNOWLEDGE: Valid virtio device found",
-# "VIRTIO_CONFIG_S_DRIVER: Guest OS compatible with device",
-# "VIRTIO_CONFIG_S_FEATURES_OK: Feature negotiation complete",
-# "VIRTIO_CONFIG_S_DRIVER_OK: Driver setup and ready"
-# ]
-# },
+# "status": 15,
# "num-vqs": 2,
-# "guest-features": {
-# "dev-features": [],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)"
-# ]
-# },
-# "host-features": {
-# "unknown-dev-features": 1073741824,
-# "dev-features": [],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)",
-# "VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts",
-# "VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. descs. on VQ"
-# ]
-# },
+# "guest-features": 5100273664,
+# "host-features": 6325010432,
# "use-guest-notifier-mask": true,
# "vm-running": true,
# "queue-sel": 1,
@@ -279,147 +252,22 @@
# "max-queues": 1,
# "backend-cap": 2,
# "log-size": 0,
-# "backend-features": {
-# "dev-features": [],
-# "transports": []
-# },
+# "backend-features": 0,
# "nvqs": 2,
-# "protocol-features": {
-# "protocols": []
-# },
+# "protocol-features": 0,
# "vq-index": 0,
# "log-enabled": false,
-# "acked-features": {
-# "dev-features": [
-# "VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers"
-# ],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)"
-# ]
-# },
-# "features": {
-# "dev-features": [
-# "VHOST_F_LOG_ALL: Logging write descriptors supported",
-# "VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers"
-# ],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_IOMMU_PLATFORM: Device can be used on IOMMU platform",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)",
-# "VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts",
-# "VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. descs. on VQ"
-# ]
-# }
-# },
-# "backend-features": {
-# "dev-features": [
-# "VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features negotiation supported",
-# "VIRTIO_NET_F_GSO: Handling GSO-type packets supported",
-# "VIRTIO_NET_F_CTRL_MAC_ADDR: MAC address set through control channel",
-# "VIRTIO_NET_F_GUEST_ANNOUNCE: Driver sending gratuitous packets supported",
-# "VIRTIO_NET_F_CTRL_RX_EXTRA: Extra RX mode control supported",
-# "VIRTIO_NET_F_CTRL_VLAN: Control channel VLAN filtering supported",
-# "VIRTIO_NET_F_CTRL_RX: Control channel RX mode supported",
-# "VIRTIO_NET_F_CTRL_VQ: Control channel available",
-# "VIRTIO_NET_F_STATUS: Configuration status field available",
-# "VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers",
-# "VIRTIO_NET_F_HOST_UFO: Device can receive UFO",
-# "VIRTIO_NET_F_HOST_ECN: Device can receive TSO with ECN",
-# "VIRTIO_NET_F_HOST_TSO6: Device can receive TSOv6",
-# "VIRTIO_NET_F_HOST_TSO4: Device can receive TSOv4",
-# "VIRTIO_NET_F_GUEST_UFO: Driver can receive UFO",
-# "VIRTIO_NET_F_GUEST_ECN: Driver can receive TSO with ECN",
-# "VIRTIO_NET_F_GUEST_TSO6: Driver can receive TSOv6",
-# "VIRTIO_NET_F_GUEST_TSO4: Driver can receive TSOv4",
-# "VIRTIO_NET_F_MAC: Device has given MAC address",
-# "VIRTIO_NET_F_CTRL_GUEST_OFFLOADS: Control channel offloading reconfig. supported",
-# "VIRTIO_NET_F_GUEST_CSUM: Driver handling packets with partial checksum supported",
-# "VIRTIO_NET_F_CSUM: Device handling packets with partial checksum supported"
-# ],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)",
-# "VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts",
-# "VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. descs. on VQ"
-# ]
+# "acked-features": 5100306432,
+# "features": 13908344832,
# },
+# "backend-features": 6337593319,
# "start-on-kick": false,
# "isr": 1,
# "broken": false,
-# "status": {
-# "statuses": [
-# "VIRTIO_CONFIG_S_ACKNOWLEDGE: Valid virtio device found",
-# "VIRTIO_CONFIG_S_DRIVER: Guest OS compatible with device",
-# "VIRTIO_CONFIG_S_FEATURES_OK: Feature negotiation complete",
-# "VIRTIO_CONFIG_S_DRIVER_OK: Driver setup and ready"
-# ]
-# },
+# "status": 15,
# "num-vqs": 3,
-# "guest-features": {
-# "dev-features": [
-# "VIRTIO_NET_F_CTRL_MAC_ADDR: MAC address set through control channel",
-# "VIRTIO_NET_F_GUEST_ANNOUNCE: Driver sending gratuitous packets supported",
-# "VIRTIO_NET_F_CTRL_VLAN: Control channel VLAN filtering supported",
-# "VIRTIO_NET_F_CTRL_RX: Control channel RX mode supported",
-# "VIRTIO_NET_F_CTRL_VQ: Control channel available",
-# "VIRTIO_NET_F_STATUS: Configuration status field available",
-# "VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers",
-# "VIRTIO_NET_F_HOST_UFO: Device can receive UFO",
-# "VIRTIO_NET_F_HOST_ECN: Device can receive TSO with ECN",
-# "VIRTIO_NET_F_HOST_TSO6: Device can receive TSOv6",
-# "VIRTIO_NET_F_HOST_TSO4: Device can receive TSOv4",
-# "VIRTIO_NET_F_GUEST_UFO: Driver can receive UFO",
-# "VIRTIO_NET_F_GUEST_ECN: Driver can receive TSO with ECN",
-# "VIRTIO_NET_F_GUEST_TSO6: Driver can receive TSOv6",
-# "VIRTIO_NET_F_GUEST_TSO4: Driver can receive TSOv4",
-# "VIRTIO_NET_F_MAC: Device has given MAC address",
-# "VIRTIO_NET_F_CTRL_GUEST_OFFLOADS: Control channel offloading reconfig. supported",
-# "VIRTIO_NET_F_GUEST_CSUM: Driver handling packets with partial checksum supported",
-# "VIRTIO_NET_F_CSUM: Device handling packets with partial checksum supported"
-# ],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)"
-# ]
-# },
-# "host-features": {
-# "dev-features": [
-# "VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features negotiation supported",
-# "VIRTIO_NET_F_GSO: Handling GSO-type packets supported",
-# "VIRTIO_NET_F_CTRL_MAC_ADDR: MAC address set through control channel",
-# "VIRTIO_NET_F_GUEST_ANNOUNCE: Driver sending gratuitous packets supported",
-# "VIRTIO_NET_F_CTRL_RX_EXTRA: Extra RX mode control supported",
-# "VIRTIO_NET_F_CTRL_VLAN: Control channel VLAN filtering supported",
-# "VIRTIO_NET_F_CTRL_RX: Control channel RX mode supported",
-# "VIRTIO_NET_F_CTRL_VQ: Control channel available",
-# "VIRTIO_NET_F_STATUS: Configuration status field available",
-# "VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers",
-# "VIRTIO_NET_F_HOST_UFO: Device can receive UFO",
-# "VIRTIO_NET_F_HOST_ECN: Device can receive TSO with ECN",
-# "VIRTIO_NET_F_HOST_TSO6: Device can receive TSOv6",
-# "VIRTIO_NET_F_HOST_TSO4: Device can receive TSOv4",
-# "VIRTIO_NET_F_GUEST_UFO: Driver can receive UFO",
-# "VIRTIO_NET_F_GUEST_ECN: Driver can receive TSO with ECN",
-# "VIRTIO_NET_F_GUEST_TSO6: Driver can receive TSOv6",
-# "VIRTIO_NET_F_GUEST_TSO4: Driver can receive TSOv4",
-# "VIRTIO_NET_F_MAC: Device has given MAC address",
-# "VIRTIO_NET_F_CTRL_GUEST_OFFLOADS: Control channel offloading reconfig. supported",
-# "VIRTIO_NET_F_GUEST_CSUM: Driver handling packets with partial checksum supported",
-# "VIRTIO_NET_F_CSUM: Device handling packets with partial checksum supported"
-# ],
-# "transports": [
-# "VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled",
-# "VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported",
-# "VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)",
-# "VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts",
-# "VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. descs. on VQ"
-# ]
-# },
+# "guest-features": 5111807911,
+# "host-features": 6337593319,
# "use-guest-notifier-mask": true,
# "vm-running": true,
# "queue-sel": 2,
--
2.39.1
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