From e02cda008591317b1625707ff8e115a4841aa889 Mon Sep 17 00:00:00 2001
From: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 11:40:56 +0000
Subject: Introduce Virtio-loopback epsilon release:
Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.
Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9
---
monitor/qmp-cmds.c | 468 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 468 insertions(+)
create mode 100644 monitor/qmp-cmds.c
(limited to 'monitor/qmp-cmds.c')
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
new file mode 100644
index 000000000..343353e27
--- /dev/null
+++ b/monitor/qmp-cmds.c
@@ -0,0 +1,468 @@
+/*
+ * QEMU Management Protocol commands
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "qemu/cutils.h"
+#include "qemu/option.h"
+#include "monitor/monitor.h"
+#include "sysemu/sysemu.h"
+#include "qemu/config-file.h"
+#include "qemu/uuid.h"
+#include "chardev/char.h"
+#include "ui/qemu-spice.h"
+#include "ui/console.h"
+#include "sysemu/kvm.h"
+#include "sysemu/runstate.h"
+#include "sysemu/runstate-action.h"
+#include "sysemu/blockdev.h"
+#include "sysemu/block-backend.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-acpi.h"
+#include "qapi/qapi-commands-block.h"
+#include "qapi/qapi-commands-control.h"
+#include "qapi/qapi-commands-machine.h"
+#include "qapi/qapi-commands-misc.h"
+#include "qapi/qapi-commands-ui.h"
+#include "qapi/type-helpers.h"
+#include "qapi/qmp/qerror.h"
+#include "exec/ramlist.h"
+#include "hw/mem/memory-device.h"
+#include "hw/acpi/acpi_dev_interface.h"
+#include "hw/intc/intc.h"
+#include "hw/rdma/rdma.h"
+
+NameInfo *qmp_query_name(Error **errp)
+{
+ NameInfo *info = g_malloc0(sizeof(*info));
+
+ if (qemu_name) {
+ info->has_name = true;
+ info->name = g_strdup(qemu_name);
+ }
+
+ return info;
+}
+
+KvmInfo *qmp_query_kvm(Error **errp)
+{
+ KvmInfo *info = g_malloc0(sizeof(*info));
+
+ info->enabled = kvm_enabled();
+ info->present = accel_find("kvm");
+
+ return info;
+}
+
+UuidInfo *qmp_query_uuid(Error **errp)
+{
+ UuidInfo *info = g_malloc0(sizeof(*info));
+
+ info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
+ return info;
+}
+
+void qmp_quit(Error **errp)
+{
+ shutdown_action = SHUTDOWN_ACTION_POWEROFF;
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP_QUIT);
+}
+
+void qmp_stop(Error **errp)
+{
+ /* if there is a dump in background, we should wait until the dump
+ * finished */
+ if (dump_in_progress()) {
+ error_setg(errp, "There is a dump in process, please wait.");
+ return;
+ }
+
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ autostart = 0;
+ } else {
+ vm_stop(RUN_STATE_PAUSED);
+ }
+}
+
+void qmp_system_reset(Error **errp)
+{
+ qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP_SYSTEM_RESET);
+}
+
+void qmp_system_powerdown(Error **errp)
+{
+ qemu_system_powerdown_request();
+}
+
+void qmp_cont(Error **errp)
+{
+ BlockBackend *blk;
+ BlockJob *job;
+ Error *local_err = NULL;
+
+ /* if there is a dump in background, we should wait until the dump
+ * finished */
+ if (dump_in_progress()) {
+ error_setg(errp, "There is a dump in process, please wait.");
+ return;
+ }
+
+ if (runstate_needs_reset()) {
+ error_setg(errp, "Resetting the Virtual Machine is required");
+ return;
+ } else if (runstate_check(RUN_STATE_SUSPENDED)) {
+ return;
+ } else if (runstate_check(RUN_STATE_FINISH_MIGRATE)) {
+ error_setg(errp, "Migration is not finalized yet");
+ return;
+ }
+
+ for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
+ blk_iostatus_reset(blk);
+ }
+
+ for (job = block_job_next(NULL); job; job = block_job_next(job)) {
+ block_job_iostatus_reset(job);
+ }
+
+ /* Continuing after completed migration. Images have been inactivated to
+ * allow the destination to take control. Need to get control back now.
+ *
+ * If there are no inactive block nodes (e.g. because the VM was just
+ * paused rather than completing a migration), bdrv_inactivate_all() simply
+ * doesn't do anything. */
+ bdrv_invalidate_cache_all(&local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ autostart = 1;
+ } else {
+ vm_start();
+ }
+}
+
+void qmp_system_wakeup(Error **errp)
+{
+ if (!qemu_wakeup_suspend_enabled()) {
+ error_setg(errp,
+ "wake-up from suspend is not supported by this guest");
+ return;
+ }
+
+ qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp);
+}
+
+void qmp_set_password(const char *protocol, const char *password,
+ bool has_connected, const char *connected, Error **errp)
+{
+ int disconnect_if_connected = 0;
+ int fail_if_connected = 0;
+ int rc;
+
+ if (has_connected) {
+ if (strcmp(connected, "fail") == 0) {
+ fail_if_connected = 1;
+ } else if (strcmp(connected, "disconnect") == 0) {
+ disconnect_if_connected = 1;
+ } else if (strcmp(connected, "keep") == 0) {
+ /* nothing */
+ } else {
+ error_setg(errp, QERR_INVALID_PARAMETER, "connected");
+ return;
+ }
+ }
+
+ if (strcmp(protocol, "spice") == 0) {
+ if (!qemu_using_spice(errp)) {
+ return;
+ }
+ rc = qemu_spice.set_passwd(password, fail_if_connected,
+ disconnect_if_connected);
+ } else if (strcmp(protocol, "vnc") == 0) {
+ if (fail_if_connected || disconnect_if_connected) {
+ /* vnc supports "connected=keep" only */
+ error_setg(errp, QERR_INVALID_PARAMETER, "connected");
+ return;
+ }
+ /* Note that setting an empty password will not disable login through
+ * this interface. */
+ rc = vnc_display_password(NULL, password);
+ } else {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
+ "'vnc' or 'spice'");
+ return;
+ }
+
+ if (rc != 0) {
+ error_setg(errp, "Could not set password");
+ }
+}
+
+void qmp_expire_password(const char *protocol, const char *whenstr,
+ Error **errp)
+{
+ time_t when;
+ int rc;
+
+ if (strcmp(whenstr, "now") == 0) {
+ when = 0;
+ } else if (strcmp(whenstr, "never") == 0) {
+ when = TIME_MAX;
+ } else if (whenstr[0] == '+') {
+ when = time(NULL) + strtoull(whenstr+1, NULL, 10);
+ } else {
+ when = strtoull(whenstr, NULL, 10);
+ }
+
+ if (strcmp(protocol, "spice") == 0) {
+ if (!qemu_using_spice(errp)) {
+ return;
+ }
+ rc = qemu_spice.set_pw_expire(when);
+ } else if (strcmp(protocol, "vnc") == 0) {
+ rc = vnc_display_pw_expire(NULL, when);
+ } else {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
+ "'vnc' or 'spice'");
+ return;
+ }
+
+ if (rc != 0) {
+ error_setg(errp, "Could not set password expire time");
+ }
+}
+
+#ifdef CONFIG_VNC
+void qmp_change_vnc_password(const char *password, Error **errp)
+{
+ if (vnc_display_password(NULL, password) < 0) {
+ error_setg(errp, "Could not set password");
+ }
+}
+#endif
+
+void qmp_add_client(const char *protocol, const char *fdname,
+ bool has_skipauth, bool skipauth, bool has_tls, bool tls,
+ Error **errp)
+{
+ Chardev *s;
+ int fd;
+
+ fd = monitor_get_fd(monitor_cur(), fdname, errp);
+ if (fd < 0) {
+ return;
+ }
+
+ if (strcmp(protocol, "spice") == 0) {
+ if (!qemu_using_spice(errp)) {
+ close(fd);
+ return;
+ }
+ skipauth = has_skipauth ? skipauth : false;
+ tls = has_tls ? tls : false;
+ if (qemu_spice.display_add_client(fd, skipauth, tls) < 0) {
+ error_setg(errp, "spice failed to add client");
+ close(fd);
+ }
+ return;
+#ifdef CONFIG_VNC
+ } else if (strcmp(protocol, "vnc") == 0) {
+ skipauth = has_skipauth ? skipauth : false;
+ vnc_display_add_client(NULL, fd, skipauth);
+ return;
+#endif
+ } else if ((s = qemu_chr_find(protocol)) != NULL) {
+ if (qemu_chr_add_client(s, fd) < 0) {
+ error_setg(errp, "failed to add client");
+ close(fd);
+ return;
+ }
+ return;
+ }
+
+ error_setg(errp, "protocol '%s' is invalid", protocol);
+ close(fd);
+}
+
+
+MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
+{
+ return qmp_memory_device_list();
+}
+
+ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
+{
+ bool ambig;
+ ACPIOSTInfoList *head = NULL;
+ ACPIOSTInfoList **prev = &head;
+ Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);
+
+ if (obj) {
+ AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
+ AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);
+
+ adevc->ospm_status(adev, &prev);
+ } else {
+ error_setg(errp, "command is not supported, missing ACPI device");
+ }
+
+ return head;
+}
+
+MemoryInfo *qmp_query_memory_size_summary(Error **errp)
+{
+ MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
+ MachineState *ms = MACHINE(qdev_get_machine());
+
+ mem_info->base_memory = ms->ram_size;
+
+ mem_info->plugged_memory = get_plugged_memory_size();
+ mem_info->has_plugged_memory =
+ mem_info->plugged_memory != (uint64_t)-1;
+
+ return mem_info;
+}
+
+void qmp_display_reload(DisplayReloadOptions *arg, Error **errp)
+{
+ switch (arg->type) {
+ case DISPLAY_RELOAD_TYPE_VNC:
+#ifdef CONFIG_VNC
+ if (arg->u.vnc.has_tls_certs && arg->u.vnc.tls_certs) {
+ vnc_display_reload_certs(NULL, errp);
+ }
+#else
+ error_setg(errp, "vnc is invalid, missing 'CONFIG_VNC'");
+#endif
+ break;
+ default:
+ abort();
+ }
+}
+
+#ifdef CONFIG_PROFILER
+
+int64_t dev_time;
+
+HumanReadableText *qmp_x_query_profile(Error **errp)
+{
+ g_autoptr(GString) buf = g_string_new("");
+ static int64_t last_cpu_exec_time;
+ int64_t cpu_exec_time;
+ int64_t delta;
+
+ cpu_exec_time = tcg_cpu_exec_time();
+ delta = cpu_exec_time - last_cpu_exec_time;
+
+ g_string_append_printf(buf, "async time %" PRId64 " (%0.3f)\n",
+ dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
+ g_string_append_printf(buf, "qemu time %" PRId64 " (%0.3f)\n",
+ delta, delta / (double)NANOSECONDS_PER_SECOND);
+ last_cpu_exec_time = cpu_exec_time;
+ dev_time = 0;
+
+ return human_readable_text_from_str(buf);
+}
+#else
+HumanReadableText *qmp_x_query_profile(Error **errp)
+{
+ error_setg(errp, "Internal profiler not compiled");
+ return NULL;
+}
+#endif
+
+static int qmp_x_query_rdma_foreach(Object *obj, void *opaque)
+{
+ RdmaProvider *rdma;
+ RdmaProviderClass *k;
+ GString *buf = opaque;
+
+ if (object_dynamic_cast(obj, INTERFACE_RDMA_PROVIDER)) {
+ rdma = RDMA_PROVIDER(obj);
+ k = RDMA_PROVIDER_GET_CLASS(obj);
+ if (k->format_statistics) {
+ k->format_statistics(rdma, buf);
+ } else {
+ g_string_append_printf(buf,
+ "RDMA statistics not available for %s.\n",
+ object_get_typename(obj));
+ }
+ }
+
+ return 0;
+}
+
+HumanReadableText *qmp_x_query_rdma(Error **errp)
+{
+ g_autoptr(GString) buf = g_string_new("");
+
+ object_child_foreach_recursive(object_get_root(),
+ qmp_x_query_rdma_foreach, buf);
+
+ return human_readable_text_from_str(buf);
+}
+
+HumanReadableText *qmp_x_query_ramblock(Error **errp)
+{
+ g_autoptr(GString) buf = ram_block_format();
+
+ return human_readable_text_from_str(buf);
+}
+
+static int qmp_x_query_irq_foreach(Object *obj, void *opaque)
+{
+ InterruptStatsProvider *intc;
+ InterruptStatsProviderClass *k;
+ GString *buf = opaque;
+
+ if (object_dynamic_cast(obj, TYPE_INTERRUPT_STATS_PROVIDER)) {
+ intc = INTERRUPT_STATS_PROVIDER(obj);
+ k = INTERRUPT_STATS_PROVIDER_GET_CLASS(obj);
+ uint64_t *irq_counts;
+ unsigned int nb_irqs, i;
+ if (k->get_statistics &&
+ k->get_statistics(intc, &irq_counts, &nb_irqs)) {
+ if (nb_irqs > 0) {
+ g_string_append_printf(buf, "IRQ statistics for %s:\n",
+ object_get_typename(obj));
+ for (i = 0; i < nb_irqs; i++) {
+ if (irq_counts[i] > 0) {
+ g_string_append_printf(buf, "%2d: %" PRId64 "\n", i,
+ irq_counts[i]);
+ }
+ }
+ }
+ } else {
+ g_string_append_printf(buf,
+ "IRQ statistics not available for %s.\n",
+ object_get_typename(obj));
+ }
+ }
+
+ return 0;
+}
+
+HumanReadableText *qmp_x_query_irq(Error **errp)
+{
+ g_autoptr(GString) buf = g_string_new("");
+
+ object_child_foreach_recursive(object_get_root(),
+ qmp_x_query_irq_foreach, buf);
+
+ return human_readable_text_from_str(buf);
+}
--
cgit