qemu: command: support crypto device

Support virtio-crypto device, also support cryptodev types:
- builtin
- lkcf

Finally, we can launch a VM(QEMU) with one or more crypto devices by
libvirt.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_command.c

@@ -926,6 +926,12 @@ qemuBuildVirtioDevGetConfigDev(const virDomainDeviceDef *device,
         }
             break;
 
+        case VIR_DOMAIN_DEVICE_CRYPTO: {
+            *baseName = "virtio-crypto";
+            *virtioOptions = device->data.crypto->virtio;
+            break;
+        }
+
         case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_SOUND:
         case VIR_DOMAIN_DEVICE_WATCHDOG:
@@ -942,7 +948,6 @@ qemuBuildVirtioDevGetConfigDev(const virDomainDeviceDef *device,
         case VIR_DOMAIN_DEVICE_MEMORY:
         case VIR_DOMAIN_DEVICE_IOMMU:
         case VIR_DOMAIN_DEVICE_AUDIO:
-        case VIR_DOMAIN_DEVICE_CRYPTO:
         case VIR_DOMAIN_DEVICE_LAST:
         default:
             break;
@@ -9894,6 +9899,96 @@ qemuBuildVsockCommandLine(virCommand *cmd,
 }
 
 
+VIR_ENUM_DECL(qemuCryptoBackend);
+VIR_ENUM_IMPL(qemuCryptoBackend,
+              VIR_DOMAIN_CRYPTO_BACKEND_LAST,
+              "cryptodev-backend-builtin",
+              "cryptodev-backend-lkcf",
+);
+
+
+static int
+qemuBuildCryptoBackendProps(virDomainCryptoDef *crypto,
+                            virJSONValue **props)
+{
+    g_autofree char *objAlias = NULL;
+
+    objAlias = g_strdup_printf("obj%s", crypto->info.alias);
+
+    if (qemuMonitorCreateObjectProps(props,
+                                     qemuCryptoBackendTypeToString(crypto->backend),
+                                     objAlias,
+                                     "p:queues", crypto->queues,
+                                     NULL) < 0)
+        return -1;
+
+    return 0;
+}
+
+
+static virJSONValue *
+qemuBuildCryptoDevProps(const virDomainDef *def,
+                        virDomainCryptoDef *dev,
+                        virQEMUCaps *qemuCaps)
+{
+    g_autoptr(virJSONValue) props = NULL;
+    g_autofree char *crypto = g_strdup_printf("obj%s", dev->info.alias);
+
+    if (!(props = qemuBuildVirtioDevProps(VIR_DOMAIN_DEVICE_CRYPTO, dev, qemuCaps)))
+        return NULL;
+
+    if (virJSONValueObjectAdd(&props,
+                              "s:cryptodev", crypto,
+                              "s:id", dev->info.alias,
+                              NULL) < 0)
+        return NULL;
+
+    if (qemuBuildDeviceAddressProps(props, def, &dev->info) < 0)
+        return NULL;
+
+    return g_steal_pointer(&props);
+}
+
+
+static int
+qemuBuildCryptoCommandLine(virCommand *cmd,
+                           const virDomainDef *def,
+                           virQEMUCaps *qemuCaps)
+{
+    size_t i;
+
+    for (i = 0; i < def->ncryptos; i++) {
+        g_autoptr(virJSONValue) props = NULL;
+        virDomainCryptoDef *crypto = def->cryptos[i];
+        g_autoptr(virJSONValue) devprops = NULL;
+
+        if (!crypto->info.alias) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Crypto device is missing alias"));
+            return -1;
+        }
+
+        if (qemuBuildCryptoBackendProps(crypto, &props) < 0)
+            return -1;
+
+        if (qemuBuildObjectCommandlineFromJSON(cmd, props, qemuCaps) < 0)
+            return -1;
+
+        /* add the device */
+        if (qemuCommandAddExtDevice(cmd, &crypto->info, def, qemuCaps) < 0)
+            return -1;
+
+        if (!(devprops = qemuBuildCryptoDevProps(def, crypto, qemuCaps)))
+            return -1;
+
+        if (qemuBuildDeviceCommandlineFromJSON(cmd, devprops, def, qemuCaps) < 0)
+            return -1;
+    }
+
+    return 0;
+}
+
+
 typedef enum {
     QEMU_COMMAND_DEPRECATION_BEHAVIOR_NONE = 0,
     QEMU_COMMAND_DEPRECATION_BEHAVIOR_OMIT,
@@ -10246,6 +10341,9 @@ qemuBuildCommandLine(virDomainObj *vm,
         qemuBuildVsockCommandLine(cmd, def, def->vsock, qemuCaps) < 0)
         return NULL;
 
+    if (qemuBuildCryptoCommandLine(cmd, def, qemuCaps) < 0)
+        return NULL;
+
     if (cfg->logTimestamp)
         virCommandAddArgList(cmd, "-msg", "timestamp=on", NULL);
 

tests/qemuxml2argvdata/crypto-builtin.x86_64-latest.args

@@ -0,0 +1,40 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pc-q35-7.0,usb=off,dump-guest-core=off \
+-accel tcg \
+-cpu qemu64 \
+-m size=1048576k,slots=16,maxmem=1130496k \
+-overcommit mem-lock=off \
+-smp 2,sockets=2,cores=1,threads=1 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node0","size":536870912}' \
+-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node1","size":536870912}' \
+-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device '{"driver":"pcie-root-port","port":8,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x1"}' \
+-device '{"driver":"pcie-root-port","port":9,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x1.0x1"}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.1","addr":"0x0"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-object '{"qom-type":"cryptodev-backend-builtin","id":"objcrypto0","queues":1}' \
+-device '{"driver":"virtio-crypto-pci","cryptodev":"objcrypto0","id":"crypto0","bus":"pcie.0","addr":"0xa"}' \
+-msg timestamp=on

tests/qemuxml2argvtest.c

@@ -2983,6 +2983,8 @@ mymain(void)
 
     DO_TEST_CAPS_VER("sgx-epc", "7.0.0");
 
+    DO_TEST_CAPS_LATEST("crypto-builtin");
+
     if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
         virFileDeleteTree(fakerootdir);