[libvirt] [PATCH 3/7] libvirt: add new public API to get MKTME Info
The API can be used to get platform specific key supported info
---
include/libvirt/libvirt-host.h | 18 +++++++++++++
src/driver-hypervisor.h | 7 +++++
src/libvirt-host.c | 49 ++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 5 ++++
4 files changed, 79 insertions(+)
diff --git a/include/libvirt/libvirt-host.h b/include/libvirt/libvirt-host.h
index 7debb5f829..292cbbc388 100644
--- a/include/libvirt/libvirt-host.h
+++ b/include/libvirt/libvirt-host.h
@@ -473,6 +473,24 @@ int virNodeGetSEVInfo (virConnectPtr conn,
int *nparams,
unsigned int flags);
+/**
+*
+* MKTME Parameters
+*/
+
+/**
+* VIR_NODE_MKTME_KEYS_SUPPORTED:
+*
+* Macro represents the number of keys supported, when MKTME is enabled in the guest.
+*/
+# define VIR_NODE_MKTME_KEYS_SUPPORTED "keys_supported"
+
+int virNodeGetMKTMEInfo(virConnectPtr conn,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags);
+
+
/**
* virConnectFlags
*
diff --git a/src/driver-hypervisor.h b/src/driver-hypervisor.h
index 5315e33dde..0bbb90b321 100644
--- a/src/driver-hypervisor.h
+++ b/src/driver-hypervisor.h
@@ -1322,6 +1322,12 @@ typedef int
int *nparams,
unsigned int flags);
+typedef int
+(*virDrvNodeGetMKTMEInfo)(virConnectPtr conn,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags);
+
typedef int
(*virDrvDomainGetLaunchSecurityInfo)(virDomainPtr domain,
virTypedParameterPtr *params,
@@ -1580,6 +1586,7 @@ struct _virHypervisorDriver {
virDrvConnectBaselineHypervisorCPU connectBaselineHypervisorCPU;
virDrvNodeGetSEVInfo nodeGetSEVInfo;
virDrvDomainGetLaunchSecurityInfo domainGetLaunchSecurityInfo;
+ virDrvNodeGetMKTMEInfo nodeGetMKTMEInfo;
};
diff --git a/src/libvirt-host.c b/src/libvirt-host.c
index e20d6ee250..92b9973560 100644
--- a/src/libvirt-host.c
+++ b/src/libvirt-host.c
@@ -1688,3 +1688,52 @@ virNodeGetSEVInfo(virConnectPtr conn,
virDispatchError(conn);
return -1;
}
+
+
+/*
+ * virNodeGetMKTMEInfo:
+ * @conn: pointer to the hypervisor connection
+ * @params: where to store mktme information
+ * @nparams: pointer to number of MKTME parameters returned in @params
+ * @flags: extra flags; not used yet, so callers should always pass 0
+ *
+ * If hypervisor supports Intel's MKTME feature, then @params will contain various
+ * platform specific information like number of keys supported. Caller is
+ * responsible for freeing @params.
+ *
+ * Returns 0 in case of success, and -1 in case of failure.
+ */
+int
+virNodeGetMKTMEInfo(virConnectPtr conn,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags)
+{
+ VIR_DEBUG("conn=%p, params=%p, nparams=%p, flags=0x%x",
+ conn, params, nparams, flags);
+
+ virResetLastError();
+
+ virCheckConnectReturn(conn, -1);
+ virCheckNonNullArgGoto(nparams, error);
+ virCheckNonNegativeArgGoto(*nparams, error);
+ virCheckReadOnlyGoto(conn->flags, error);
+
+ if (VIR_DRV_SUPPORTS_FEATURE(conn->driver, conn,
+ VIR_DRV_FEATURE_TYPED_PARAM_STRING))
+ flags |= VIR_TYPED_PARAM_STRING_OKAY;
+
+ if (conn->driver->nodeGetMKTMEInfo) {
+ int ret;
+ ret = conn->driver->nodeGetMKTMEInfo(conn, params, nparams, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virReportUnsupportedError();
+
+ error:
+ virDispatchError(conn);
+ return -1;
+}
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index dbce3336d5..7aa6a60b11 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -819,4 +819,9 @@ LIBVIRT_5.2.0 {
virConnectGetStoragePoolCapabilities;
} LIBVIRT_4.10.0;
+LIBVIRT_5.3.0 {
+ global:
+ virNodeGetMKTMEInfo;
+} LIBVIRT_5.2.0;
+
# .... define new API here using predicted next version number ....
--
2.21.0.windows.1