The command prints data from `query-virtio' QMP in human-readable
format.
Cc: Denis V. Lunev <d...@virtuozzo.com>
Signed-off-by: Jan Dakinevich <jan.dakinev...@virtuozzo.com>
---
hmp-commands-info.hx | 14 ++++++++++
hmp.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++
hmp.h | 1 +
3 files changed, 89 insertions(+)
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 54c3e5e..292280a 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -868,6 +868,20 @@ enabled) memory in bytes.
ETEXI
STEXI
+@item info virtio
+@findex virtio
+Display guest and host fetures for all virtio devices.
+ETEXI
+
+ {
+ .name = "virtio",
+ .args_type = "path:s?",
+ .params = "[path]",
+ .help = "show virtio info",
+ .cmd = hmp_info_virtio,
+ },
+
+STEXI
@end table
ETEXI
diff --git a/hmp.c b/hmp.c
index 35a7041..786782b 100644
--- a/hmp.c
+++ b/hmp.c
@@ -43,6 +43,7 @@
#include "hw/intc/intc.h"
#include "migration/snapshot.h"
#include "migration/misc.h"
+#include "hw/virtio/virtio.h"
#ifdef CONFIG_SPICE
#include <spice/enums.h>
@@ -2918,3 +2919,76 @@ void hmp_info_memory_size_summary(Monitor *mon, const
QDict *qdict)
}
hmp_handle_error(mon, &err);
}
+
+#define HMP_INFO_VIRTIO_INDENT 2
+#define HMP_INFO_VIRTIO_FEATURE 40
+
+static void hmp_info_virtio_print(Monitor *mon, VirtioInfo *info)
+{
+ Object *obj = object_resolve_path(info->qom_path, NULL);
+ char *path = qdev_get_dev_path(DEVICE(obj));
+ VirtioFeatureList *feat;
+ strList *status;
+
+ monitor_printf(mon, "%s at %s\n", object_get_typename(obj), path);
+ g_free(path);
+
+ monitor_printf(mon, "%*sQOM path: %s\n",
+ HMP_INFO_VIRTIO_INDENT, "", info->qom_path);
+
+ /* device status */
+ monitor_printf(mon, "%*sstatus: 0x%02"PRIx8"\n",
+ HMP_INFO_VIRTIO_INDENT, "", info->status);
+ for (status = info->status_names; status; status = status->next) {
+ monitor_printf(mon, "%*s%s\n",
+ HMP_INFO_VIRTIO_INDENT * 2, "", status->value);
+ }
+
+
+ /* host and guest feature */
+ monitor_printf(mon, "%*shost features: 0x%016"PRIx64"\n",
+ HMP_INFO_VIRTIO_INDENT, "", info->host_features);
+ monitor_printf(mon, "%*sguest features: 0x%016"PRIx64"\n",
+ HMP_INFO_VIRTIO_INDENT, "", info->guest_features);
+
+ /* common features */
+ monitor_printf(mon, "%*scommon features:%s\n",
+ HMP_INFO_VIRTIO_INDENT, "",
+ info->common_features_names ? "" : " (none)");
+ for (feat = info->common_features_names; feat; feat = feat->next) {
+ monitor_printf(mon, "%*s%-*s%s\n",
+ HMP_INFO_VIRTIO_INDENT * 2, "",
+ HMP_INFO_VIRTIO_FEATURE, feat->value->name,
+ feat->value->acked ? " acked" : "");
+ }
+
+ /* device features */
+ monitor_printf(mon, "%*sdevice features:%s\n",
+ HMP_INFO_VIRTIO_INDENT, "",
+ info->device_features_names ? "" : " (none)");
+ for (feat = info->device_features_names; feat; feat = feat->next) {
+ monitor_printf(mon, "%*s%-*s%s\n",
+ HMP_INFO_VIRTIO_INDENT * 2, "",
+ HMP_INFO_VIRTIO_FEATURE, feat->value->name,
+ feat->value->acked ? " acked" : "");
+ }
+}
+
+void hmp_info_virtio(Monitor *mon, const QDict *qdict)
+{
+ const char *path = qdict_get_try_str(qdict, "path");
+ Error *err = NULL;
+ VirtioInfoList *head, *info;
+
+
+ head = qmp_query_virtio(!!path, path, &err);
+ if (err) {
+ return;
+ }
+
+ for (info = head; info; info = info->next) {
+ hmp_info_virtio_print(mon, info->value);
+ }
+
+ qapi_free_VirtioInfoList(head);
+}
diff --git a/hmp.h b/hmp.h
index a6f56b1..156293e 100644
--- a/hmp.h
+++ b/hmp.h
@@ -147,5 +147,6 @@ void hmp_info_ramblock(Monitor *mon, const QDict *qdict);
void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict);
void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);
void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict);
+void hmp_info_virtio(Monitor *mon, const QDict *qdict);
#endif
--
2.1.4
