storage: Rework createVport and deleteVport

Rework the code to use the new FCHost specific adapter structures.

Also rework the parameters to only pass what's need and leave logic in
the caller for the adapter type and the need to call the helpers.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>

src/storage/storage_backend_scsi.c

@@ -255,10 +255,10 @@ checkParent(virConnectPtr conn,
 
 static int
 createVport(virConnectPtr conn,
-            virStoragePoolObjPtr pool)
+            virStoragePoolDefPtr def,
+            const char *configFile,
+            virStorageAdapterFCHostPtr fchost)
 {
-    const char *configFile = pool->configFile;
-    virStoragePoolSourceAdapterPtr adapter = &pool->def->source.adapter;
     unsigned int parent_host;
     char *name = NULL;
     char *parent_hoststr = NULL;
@@ -267,45 +267,37 @@ createVport(virConnectPtr conn,
     virThread thread;
     int ret = -1;
 
-    if (adapter->type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
-        return 0;
-
     VIR_DEBUG("conn=%p, configFile='%s' parent='%s', wwnn='%s' wwpn='%s'",
-              conn, NULLSTR(configFile), NULLSTR(adapter->data.fchost.parent),
-              adapter->data.fchost.wwnn, adapter->data.fchost.wwpn);
+              conn, NULLSTR(configFile), NULLSTR(fchost->parent),
+              fchost->wwnn, fchost->wwpn);
 
     /* If we find an existing HBA/vHBA within the fc_host sysfs
      * using the wwnn/wwpn, then a nodedev is already created for
      * this pool and we don't have to create the vHBA
      */
-    if ((name = virVHBAGetHostByWWN(NULL, adapter->data.fchost.wwnn,
-                                    adapter->data.fchost.wwpn))) {
+    if ((name = virVHBAGetHostByWWN(NULL, fchost->wwnn, fchost->wwpn))) {
         /* If a parent was provided, let's make sure the 'name' we've
          * retrieved has the same parent
          */
-        if (adapter->data.fchost.parent &&
-            checkParent(conn, name, adapter->data.fchost.parent))
+        if (fchost->parent && checkParent(conn, name, fchost->parent))
             ret = 0;
 
         goto cleanup;
     }
 
-    if (adapter->data.fchost.parent) {
-        if (VIR_STRDUP(parent_hoststr, adapter->data.fchost.parent) < 0)
+    if (fchost->parent) {
+        if (VIR_STRDUP(parent_hoststr, fchost->parent) < 0)
             goto cleanup;
-    } else if (adapter->data.fchost.parent_wwnn &&
-               adapter->data.fchost.parent_wwpn) {
-        if (!(parent_hoststr =
-              virVHBAGetHostByWWN(NULL, adapter->data.fchost.parent_wwnn,
-                                  adapter->data.fchost.parent_wwpn))) {
+    } else if (fchost->parent_wwnn && fchost->parent_wwpn) {
+        if (!(parent_hoststr = virVHBAGetHostByWWN(NULL, fchost->parent_wwnn,
+                                                   fchost->parent_wwpn))) {
             virReportError(VIR_ERR_XML_ERROR, "%s",
                            _("cannot find parent using provided wwnn/wwpn"));
             goto cleanup;
         }
-    } else if (adapter->data.fchost.parent_fabric_wwn) {
+    } else if (fchost->parent_fabric_wwn) {
         if (!(parent_hoststr =
-              virVHBAGetHostByFabricWWN(NULL,
-                                        adapter->data.fchost.parent_fabric_wwn))) {
+              virVHBAGetHostByFabricWWN(NULL, fchost->parent_fabric_wwn))) {
             virReportError(VIR_ERR_XML_ERROR, "%s",
                            _("cannot find parent using provided fabric_wwn"));
             goto cleanup;
@@ -324,8 +316,8 @@ createVport(virConnectPtr conn,
         goto cleanup;
 
     /* NOTE:
-     * We do not save the parent_hoststr in adapter->data.fchost.parent
-     * since we could be writing out the 'def' to the saved XML config.
+     * We do not save the parent_hoststr in fchost->parent since
+     * we could be writing out the 'def' to the saved XML config.
      * If we wrote out the name in the XML, then future starts would
      * always use the same parent rather than finding the "best available"
      * parent. Besides we have a way to determine the parent based on
@@ -343,16 +335,16 @@ createVport(virConnectPtr conn,
      * restart, we need to save the persistent configuration. So if not
      * already defined as YES, then force the issue.
      */
-    if (adapter->data.fchost.managed != VIR_TRISTATE_BOOL_YES) {
-        adapter->data.fchost.managed = VIR_TRISTATE_BOOL_YES;
+    if (fchost->managed != VIR_TRISTATE_BOOL_YES) {
+        fchost->managed = VIR_TRISTATE_BOOL_YES;
         if (configFile) {
-            if (virStoragePoolSaveConfig(configFile, pool->def) < 0)
+            if (virStoragePoolSaveConfig(configFile, def) < 0)
                 goto cleanup;
         }
     }
 
-    if (virVHBAManageVport(parent_host, adapter->data.fchost.wwpn,
-                           adapter->data.fchost.wwnn, VPORT_CREATE) < 0)
+    if (virVHBAManageVport(parent_host, fchost->wwpn, fchost->wwnn,
+                           VPORT_CREATE) < 0)
         goto cleanup;
 
     virFileWaitForDevices();
@@ -362,10 +354,9 @@ createVport(virConnectPtr conn,
      * retry logic set to true. If the thread isn't created, then no big
      * deal since it's still possible to refresh the pool later.
      */
-    if ((name = virVHBAGetHostByWWN(NULL, adapter->data.fchost.wwnn,
-                                    adapter->data.fchost.wwpn))) {
+    if ((name = virVHBAGetHostByWWN(NULL, fchost->wwnn, fchost->wwpn))) {
         if (VIR_ALLOC(cbdata) == 0) {
-            memcpy(cbdata->pool_uuid, pool->def->uuid, VIR_UUID_BUFLEN);
+            memcpy(cbdata->pool_uuid, def->uuid, VIR_UUID_BUFLEN);
             VIR_STEAL_PTR(cbdata->fchost_name, name);
 
             if (virThreadCreate(&thread, false, virStoragePoolFCRefreshThread,
@@ -385,9 +376,10 @@ createVport(virConnectPtr conn,
     return ret;
 }
 
+
 static int
 deleteVport(virConnectPtr conn,
-            virStoragePoolSourceAdapter adapter)
+            virStorageAdapterFCHostPtr fchost)
 {
     unsigned int parent_host;
     char *name = NULL;
@@ -395,25 +387,19 @@ deleteVport(virConnectPtr conn,
     char *vhba_parent = NULL;
     int ret = -1;
 
-    if (adapter.type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
-        return 0;
-
     VIR_DEBUG("conn=%p parent='%s', managed='%d' wwnn='%s' wwpn='%s'",
-              conn, NULLSTR(adapter.data.fchost.parent),
-              adapter.data.fchost.managed,
-              adapter.data.fchost.wwnn,
-              adapter.data.fchost.wwpn);
+              conn, NULLSTR(fchost->parent), fchost->managed,
+              fchost->wwnn, fchost->wwpn);
 
     /* If we're not managing the deletion of the vHBA, then just return */
-    if (adapter.data.fchost.managed != VIR_TRISTATE_BOOL_YES)
+    if (fchost->managed != VIR_TRISTATE_BOOL_YES)
         return 0;
 
     /* Find our vHBA by searching the fc_host sysfs tree for our wwnn/wwpn */
-    if (!(name = virVHBAGetHostByWWN(NULL, adapter.data.fchost.wwnn,
-                                     adapter.data.fchost.wwpn))) {
+    if (!(name = virVHBAGetHostByWWN(NULL, fchost->wwnn, fchost->wwpn))) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to find fc_host for wwnn='%s' and wwpn='%s'"),
-                       adapter.data.fchost.wwnn, adapter.data.fchost.wwpn);
+                       fchost->wwnn, fchost->wwpn);
         goto cleanup;
     }
 
@@ -421,8 +407,8 @@ deleteVport(virConnectPtr conn,
      * get the parent_host value; otherwise, we have to determine
      * the parent scsi_host which we did not save at startup time
      */
-    if (adapter.data.fchost.parent) {
-        if (virSCSIHostGetNumber(adapter.data.fchost.parent, &parent_host) < 0)
+    if (fchost->parent) {
+        if (virSCSIHostGetNumber(fchost->parent, &parent_host) < 0)
             goto cleanup;
     } else {
         if (virAsprintf(&scsi_host_name, "scsi_%s", name) < 0)
@@ -435,8 +421,8 @@ deleteVport(virConnectPtr conn,
             goto cleanup;
     }
 
-    if (virVHBAManageVport(parent_host, adapter.data.fchost.wwpn,
-                           adapter.data.fchost.wwnn, VPORT_DELETE) < 0)
+    if (virVHBAManageVport(parent_host, fchost->wwpn, fchost->wwnn,
+                           VPORT_DELETE) < 0)
         goto cleanup;
 
     ret = 0;
@@ -523,15 +509,23 @@ static int
 virStorageBackendSCSIStartPool(virConnectPtr conn,
                                virStoragePoolObjPtr pool)
 {
-    return createVport(conn, pool);
+    if (pool->def->source.adapter.type ==
+        VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
+        return createVport(conn, pool->def, pool->configFile,
+                           &pool->def->source.adapter.data.fchost);
+
+    return 0;
 }
 
 static int
 virStorageBackendSCSIStopPool(virConnectPtr conn,
                               virStoragePoolObjPtr pool)
 {
-    virStoragePoolSourceAdapter adapter = pool->def->source.adapter;
-    return deleteVport(conn, adapter);
+    if (pool->def->source.adapter.type ==
+        VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
+        return deleteVport(conn, &pool->def->source.adapter.data.fchost);
+
+    return 0;
 }
 
 virStorageBackend virStorageBackendSCSI = {