S390: domain_conf support for CCW

Add necessary handling code for the new s390 CCW address type to
virDomainDeviceInfo. Further, introduce  memory management, XML
parsing, output formatting and range validation for the new
virDomainDeviceCCWAddress type.
Signed-off-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

src/conf/domain_conf.c

@@ -185,7 +185,8 @@ VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST,
               "ccid",
               "usb",
               "spapr-vio",
-              "virtio-s390")
+              "virtio-s390",
+              "ccw")
 
 VIR_ENUM_IMPL(virDomainDisk, VIR_DOMAIN_DISK_TYPE_LAST,
               "block",
@@ -2124,6 +2125,13 @@ void virDomainObjListRemove(virDomainObjListPtr doms,
     virObjectUnlock(doms);
 }
 
+static int
+virDomainDeviceCCWAddressIsValid(virDomainDeviceCCWAddressPtr addr)
+{
+    return addr->cssid <= VIR_DOMAIN_DEVICE_CCW_MAX_CSSID &&
+        addr->ssid <= VIR_DOMAIN_DEVICE_CCW_MAX_SSID &&
+        addr->schid <= VIR_DOMAIN_DEVICE_CCW_MAX_SCHID;
+}
 
 int virDomainDeviceAddressIsValid(virDomainDeviceInfoPtr info,
                                   int type)
@@ -2138,6 +2146,12 @@ int virDomainDeviceAddressIsValid(virDomainDeviceInfoPtr info,
     case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE:
         return 1;
 
+    case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390:
+        return 1;
+
+    case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW:
+        return virDomainDeviceCCWAddressIsValid(&info->addr.ccw);
+
     case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB:
         return 1;
     }
@@ -2219,6 +2233,19 @@ static int virDomainDeviceInfoClearPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUS
     return 0;
 }
 
+static int
+virDomainDeviceInfoClearCCWAddress(virDomainDefPtr def ATTRIBUTE_UNUSED,
+                                   virDomainDeviceDefPtr device ATTRIBUTE_UNUSED,
+                                   virDomainDeviceInfoPtr info,
+                                   void *opaque ATTRIBUTE_UNUSED)
+{
+    if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
+        memset(&info->addr, 0, sizeof(info->addr));
+        info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE;
+    }
+    return 0;
+}
+
 int virDomainDeviceInfoIterate(virDomainDefPtr def,
                                virDomainDeviceInfoCallback cb,
                                void *opaque)
@@ -2331,6 +2358,11 @@ void virDomainDefClearPCIAddresses(virDomainDefPtr def)
     virDomainDeviceInfoIterate(def, virDomainDeviceInfoClearPCIAddress, NULL);
 }
 
+void virDomainDefClearCCWAddresses(virDomainDefPtr def)
+{
+    virDomainDeviceInfoIterate(def, virDomainDeviceInfoClearCCWAddress, NULL);
+}
+
 void virDomainDefClearDeviceAliases(virDomainDefPtr def)
 {
     virDomainDeviceInfoIterate(def, virDomainDeviceInfoClearAlias, NULL);
@@ -2432,6 +2464,13 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
             virBufferAsprintf(buf, " reg='0x%llx'", info->addr.spaprvio.reg);
         break;
 
+    case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW:
+        virBufferAsprintf(buf, " cssid='0x%x' ssid='0x%x' schid='0x%04x'",
+                          info->addr.ccw.cssid,
+                          info->addr.ccw.ssid,
+                          info->addr.ccw.schid);
+        break;
+
     default:
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("unknown address type '%d'"), info->type);
@@ -2541,6 +2580,64 @@ cleanup:
     return ret;
 }
 
+static int
+virDomainDeviceCCWAddressParseXML(xmlNodePtr node,
+                                  virDomainDeviceCCWAddressPtr addr)
+{
+    int   ret = -1;
+    char *cssid;
+    char *ssid;
+    char *schid;
+
+    memset(addr, 0, sizeof(*addr));
+
+    cssid = virXMLPropString(node, "cssid");
+    ssid = virXMLPropString(node, "ssid");
+    schid = virXMLPropString(node, "schid");
+
+    if (cssid && ssid && schid) {
+        if (cssid &&
+            virStrToLong_ui(cssid, NULL, 0, &addr->cssid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Cannot parse <address> 'cssid' attribute"));
+            goto cleanup;
+        }
+        if (ssid &&
+            virStrToLong_ui(ssid, NULL, 0, &addr->ssid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Cannot parse <address> 'ssid' attribute"));
+            goto cleanup;
+        }
+        if (schid &&
+            virStrToLong_ui(schid, NULL, 0, &addr->schid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Cannot parse <address> 'schid' attribute"));
+            goto cleanup;
+        }
+        if (!virDomainDeviceCCWAddressIsValid(addr)) {
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+                           _("Invalid specification for virtio ccw"
+                             " address: cssid='%s' ssid='%s' schid='%s'"),
+                           cssid, ssid, schid);
+            goto cleanup;
+        }
+        addr->assigned = true;
+    } else if (cssid || ssid || schid) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("Invalid partial specification for virtio ccw"
+                         " address"));
+        goto cleanup;
+    }
+
+    ret = 0;
+
+cleanup:
+    VIR_FREE(cssid);
+    VIR_FREE(ssid);
+    VIR_FREE(schid);
+    return ret;
+}
+
 static int
 virDomainDeviceCcidAddressParseXML(xmlNodePtr node,
                                    virDomainDeviceCcidAddressPtr addr)
@@ -2834,6 +2931,12 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
             goto cleanup;
         break;
 
+    case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW:
+        if (virDomainDeviceCCWAddressParseXML
+                (address, &info->addr.ccw) < 0)
+            goto cleanup;
+        break;
+
     default:
         /* Should not happen */
         virReportError(VIR_ERR_INTERNAL_ERROR,
@@ -4685,6 +4788,7 @@ virDomainControllerDefParseXML(xmlNodePtr node,
 
     if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO &&
+        def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -5282,6 +5386,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
      * them we should make sure address type is correct */
     if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO &&
+        def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390 &&
         def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",

src/conf/domain_conf.h

@@ -190,6 +190,7 @@ enum virDomainDeviceAddressType {
     VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB,
     VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO,
     VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390,
+    VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW,
 
     VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST
 };
@@ -219,6 +220,19 @@ struct _virDomainDeviceVirtioSerialAddress {
     unsigned int port;
 };
 
+# define VIR_DOMAIN_DEVICE_CCW_MAX_CSSID    254
+# define VIR_DOMAIN_DEVICE_CCW_MAX_SSID       3
+# define VIR_DOMAIN_DEVICE_CCW_MAX_SCHID  65535
+
+typedef struct _virDomainDeviceCCWAddress virDomainDeviceCCWAddress;
+typedef virDomainDeviceCCWAddress *virDomainDeviceCCWAddressPtr;
+struct _virDomainDeviceCCWAddress {
+    unsigned int cssid;
+    unsigned int ssid;
+    unsigned int schid;
+    bool         assigned;
+};
+
 typedef struct _virDomainDeviceCcidAddress virDomainDeviceCcidAddress;
 typedef virDomainDeviceCcidAddress *virDomainDeviceCcidAddressPtr;
 struct _virDomainDeviceCcidAddress {
@@ -269,6 +283,7 @@ struct _virDomainDeviceInfo {
         virDomainDeviceCcidAddress ccid;
         virDomainDeviceUSBAddress usb;
         virDomainDeviceSpaprVioAddress spaprvio;
+        virDomainDeviceCCWAddress ccw;
     } addr;
     int mastertype;
     union {
@@ -1951,6 +1966,7 @@ int virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
                             virDomainDeviceInfoPtr src);
 void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info);
 void virDomainDefClearPCIAddresses(virDomainDefPtr def);
+void virDomainDefClearCCWAddresses(virDomainDefPtr def);
 void virDomainDefClearDeviceAliases(virDomainDefPtr def);
 
 typedef int (*virDomainDeviceInfoCallback)(virDomainDefPtr def,

src/libvirt_private.syms

@@ -323,6 +323,7 @@ virDomainCpuPlacementModeTypeToString;
 virDomainDefAddImplicitControllers;
 virDomainDefAddSecurityLabelDef;
 virDomainDefCheckABIStability;
+virDomainDefClearCCWAddresses;
 virDomainDefClearDeviceAliases;
 virDomainDefClearPCIAddresses;
 virDomainDefCompatibleDevice;