[libvirt] [PATCH 07/15] util: Move/rename virStoragePoolGetVhbaSCSIHostParent to virvhba
John Ferlan
jferlan at redhat.com
Wed Jan 25 20:27:33 UTC 2017
Move the function and rename to simply virVHBAGetParent
Since I'm changing related code, rather than have a Vhba named function
in storage_backend_scsi rename it to simply checkParent as it's already
within the scope of checking VHBA related features.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/conf/storage_conf.c | 61 +----------------------------------
src/conf/storage_conf.h | 5 ---
src/libvirt_private.syms | 2 +-
src/storage/storage_backend_scsi.c | 12 +++----
src/util/virvhba.c | 65 ++++++++++++++++++++++++++++++++++++++
src/util/virvhba.h | 4 +++
6 files changed, 77 insertions(+), 72 deletions(-)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index f8b5228..5e13bbf 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -2264,64 +2264,6 @@ virStoragePoolObjIsDuplicate(virStoragePoolObjListPtr pools,
return ret;
}
-/*
- * virStoragePoolGetVhbaSCSIHostParent:
- *
- * Using the Node Device Driver, find the host# name found via wwnn/wwpn
- * lookup in the fc_host sysfs tree (e.g. virGetFCHostNameByWWN) to get
- * the parent 'scsi_host#'.
- *
- * @conn: Connection pointer (must be non-NULL on entry)
- * @name: Pointer a string from a virGetFCHostNameByWWN (e.g., "host#")
- *
- * Returns a "scsi_host#" string of the parent of the vHBA
- */
-char *
-virStoragePoolGetVhbaSCSIHostParent(virConnectPtr conn,
- const char *name)
-{
- char *nodedev_name = NULL;
- virNodeDevicePtr device = NULL;
- char *xml = NULL;
- virNodeDeviceDefPtr def = NULL;
- char *vhba_parent = NULL;
-
- VIR_DEBUG("conn=%p, name=%s", conn, name);
-
- /* We get passed "host#" from the return from virGetFCHostNameByWWN,
- * so we need to adjust that to what the nodedev lookup expects
- */
- if (virAsprintf(&nodedev_name, "scsi_%s", name) < 0)
- goto cleanup;
-
- /* Compare the scsi_host for the name with the provided parent
- * if not the same, then fail
- */
- if (!(device = virNodeDeviceLookupByName(conn, nodedev_name))) {
- virReportError(VIR_ERR_XML_ERROR,
- _("Cannot find '%s' in node device database"),
- nodedev_name);
- goto cleanup;
- }
-
- if (!(xml = virNodeDeviceGetXMLDesc(device, 0)))
- goto cleanup;
-
- if (!(def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL)))
- goto cleanup;
-
- /* The caller checks whether the returned value is NULL or not
- * before continuing
- */
- ignore_value(VIR_STRDUP(vhba_parent, def->parent));
-
- cleanup:
- VIR_FREE(nodedev_name);
- virNodeDeviceDefFree(def);
- VIR_FREE(xml);
- virObjectUnref(device);
- return vhba_parent;
-}
static int
getSCSIHostNumber(virStoragePoolSourceAdapter adapter,
@@ -2404,8 +2346,7 @@ matchFCHostToSCSIHost(virConnectPtr conn,
* have a match.
*/
if (conn && !fc_adapter.data.fchost.parent) {
- parent_name = virStoragePoolGetVhbaSCSIHostParent(conn, name);
- if (parent_name) {
+ if ((parent_name = virVHBAGetParent(conn, name))) {
if (virGetSCSIHostNumber(parent_name, &fc_hostnum) == 0 &&
scsi_hostnum == fc_hostnum) {
VIR_FREE(parent_name);
diff --git a/src/conf/storage_conf.h b/src/conf/storage_conf.h
index b35471d..426e8b8 100644
--- a/src/conf/storage_conf.h
+++ b/src/conf/storage_conf.h
@@ -30,7 +30,6 @@
# include "virbitmap.h"
# include "virthread.h"
# include "device_conf.h"
-# include "node_device_conf.h"
# include "object_event.h"
# include <libxml/tree.h>
@@ -417,10 +416,6 @@ int virStoragePoolObjIsDuplicate(virStoragePoolObjListPtr pools,
virStoragePoolDefPtr def,
unsigned int check_active);
-char *virStoragePoolGetVhbaSCSIHostParent(virConnectPtr conn,
- const char *name)
- ATTRIBUTE_NONNULL(1);
-
int virStoragePoolSourceFindDuplicate(virConnectPtr conn,
virStoragePoolObjListPtr pools,
virStoragePoolDefPtr def);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 429c133..b58742d 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -887,7 +887,6 @@ virStoragePoolFormatDiskTypeToString;
virStoragePoolFormatFileSystemNetTypeToString;
virStoragePoolFormatFileSystemTypeToString;
virStoragePoolFormatLogicalTypeToString;
-virStoragePoolGetVhbaSCSIHostParent;
virStoragePoolLoadAllConfigs;
virStoragePoolLoadAllState;
virStoragePoolObjAssignDef;
@@ -2744,6 +2743,7 @@ virVHBAFindVportHost;
virVHBAGetConfig;
virVHBAGetHostByFabricWWN;
virVHBAGetHostByWWN;
+virVHBAGetParent;
virVHBAIsVportCapable;
virVHBAManageVport;
virVHBAPathExists;
diff --git a/src/storage/storage_backend_scsi.c b/src/storage/storage_backend_scsi.c
index e037a93..2da15dd 100644
--- a/src/storage/storage_backend_scsi.c
+++ b/src/storage/storage_backend_scsi.c
@@ -214,9 +214,9 @@ getAdapterName(virStoragePoolSourceAdapter adapter)
* sysfs tree to get the parent 'scsi_host#' to ensure it matches.
*/
static bool
-checkVhbaSCSIHostParent(virConnectPtr conn,
- const char *name,
- const char *parent_name)
+checkParent(virConnectPtr conn,
+ const char *name,
+ const char *parent_name)
{
char *vhba_parent = NULL;
bool retval = false;
@@ -227,7 +227,7 @@ checkVhbaSCSIHostParent(virConnectPtr conn,
if (!conn)
return true;
- if (!(vhba_parent = virStoragePoolGetVhbaSCSIHostParent(conn, name)))
+ if (!(vhba_parent = virVHBAGetParent(conn, name)))
goto cleanup;
if (STRNEQ(parent_name, vhba_parent)) {
@@ -276,7 +276,7 @@ createVport(virConnectPtr conn,
* retrieved has the same parent
*/
if (adapter->data.fchost.parent &&
- checkVhbaSCSIHostParent(conn, name, adapter->data.fchost.parent))
+ checkParent(conn, name, adapter->data.fchost.parent))
ret = 0;
goto cleanup;
@@ -416,7 +416,7 @@ deleteVport(virConnectPtr conn,
if (virGetSCSIHostNumber(adapter.data.fchost.parent, &parent_host) < 0)
goto cleanup;
} else {
- if (!(vhba_parent = virStoragePoolGetVhbaSCSIHostParent(conn, name)))
+ if (!(vhba_parent = virVHBAGetParent(conn, name)))
goto cleanup;
if (virGetSCSIHostNumber(vhba_parent, &parent_host) < 0)
diff --git a/src/util/virvhba.c b/src/util/virvhba.c
index e5637d7..8c4da3a 100644
--- a/src/util/virvhba.c
+++ b/src/util/virvhba.c
@@ -18,6 +18,8 @@
#include <config.h>
+#include "node_device_conf.h"
+
#include "viralloc.h"
#include "virerror.h"
#include "virfile.h"
@@ -530,3 +532,66 @@ virVHBAGetHostByFabricWWN(const char *sysfs_prefix ATTRIBUTE_UNUSED,
}
#endif /* __linux__ */
+
+
+/* The following will be more generic - using the Node Device driver in
+ * order to perform the lookup rather than looking through the file system
+ * in order to find the answer */
+/*
+ * virVHBAGetParent:
+ *
+ * Using the Node Device Driver, find the host# name found via wwnn/wwpn
+ * lookup in the fc_host sysfs tree (e.g. virGetFCHostNameByWWN) to get
+ * the parent 'scsi_host#'.
+ *
+ * @conn: Connection pointer (must be non-NULL on entry)
+ * @name: Pointer a string from a virGetFCHostNameByWWN (e.g., "host#")
+ *
+ * Returns a "scsi_host#" string of the parent of the vHBA
+ */
+char *
+virVHBAGetParent(virConnectPtr conn,
+ const char *name)
+{
+ char *nodedev_name = NULL;
+ virNodeDevicePtr device = NULL;
+ char *xml = NULL;
+ virNodeDeviceDefPtr def = NULL;
+ char *vhba_parent = NULL;
+
+ VIR_DEBUG("conn=%p, name=%s", conn, name);
+
+ /* We get passed "host#" from the return from virGetFCHostNameByWWN,
+ * so we need to adjust that to what the nodedev lookup expects
+ */
+ if (virAsprintf(&nodedev_name, "scsi_%s", name) < 0)
+ goto cleanup;
+
+ /* Compare the scsi_host for the name with the provided parent
+ * if not the same, then fail
+ */
+ if (!(device = virNodeDeviceLookupByName(conn, nodedev_name))) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Cannot find '%s' in node device database"),
+ nodedev_name);
+ goto cleanup;
+ }
+
+ if (!(xml = virNodeDeviceGetXMLDesc(device, 0)))
+ goto cleanup;
+
+ if (!(def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL)))
+ goto cleanup;
+
+ /* The caller checks whether the returned value is NULL or not
+ * before continuing
+ */
+ ignore_value(VIR_STRDUP(vhba_parent, def->parent));
+
+ cleanup:
+ VIR_FREE(nodedev_name);
+ virNodeDeviceDefFree(def);
+ VIR_FREE(xml);
+ virObjectUnref(device);
+ return vhba_parent;
+}
diff --git a/src/util/virvhba.h b/src/util/virvhba.h
index e338f96..b8d73ab 100644
--- a/src/util/virvhba.h
+++ b/src/util/virvhba.h
@@ -52,4 +52,8 @@ char *virVHBAGetHostByFabricWWN(const char *sysfs_prefix,
const char *fabric_wwn)
ATTRIBUTE_NONNULL(2);
+char *virVHBAGetParent(virConnectPtr conn,
+ const char *name)
+ ATTRIBUTE_NONNULL(1);
+
#endif /* __VIR_VBHA_H__ */
--
2.7.4
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