3:11 a.m.
The auto-generated WWN comply with the new addressing schema of WWN:
<quote>
the first nibble is either hex 5 or 6 followed by a 3-byte vendor
identifier and 36 bits for a vendor-specified serial number.
</quote>
We choose hex 5 for the first nibble. And use Qumranet's OUI
(00:1A:4A) as the 3-byte vendor indentifier. The last 36 bits
are auto-generated.
---
src/conf/node_device_conf.c | 36 +++++++++++++++++++-----------------
src/libvirt_private.syms | 1 +
src/util/virrandom.c | 18 ++++++++++++++++++
src/util/virrandom.h | 1 +
4 files changed, 39 insertions(+), 17 deletions(-)
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index d9dc9ac..127a4ae 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -37,6 +37,7 @@
#include "buf.h"
#include "uuid.h"
#include "pci.h"
+#include "virrandom.h"
#define VIR_FROM_THIS VIR_FROM_NODEDEV
@@ -63,19 +64,12 @@ VIR_ENUM_IMPL(virNodeDevHBACap, VIR_NODE_DEV_CAP_HBA_LAST,
static int
virNodeDevCapsDefParseString(const char *xpath,
xmlXPathContextPtr ctxt,
- char **string,
- virNodeDeviceDefPtr def,
- const char *missing_error_fmt)
+ char **string)
{
char *s;
- s = virXPathString(xpath, ctxt);
- if (s == NULL) {
- virNodeDeviceReportError(VIR_ERR_INTERNAL_ERROR,
- missing_error_fmt,
- def->name);
+ if (!(s = virXPathString(xpath, ctxt)))
return -1;
- }
*string = s;
return 0;
@@ -763,18 +757,26 @@ virNodeDevCapScsiHostParseXML(xmlXPathContextPtr ctxt,
if (virNodeDevCapsDefParseString("string(./wwnn[1])",
ctxt,
- &data->scsi_host.wwnn,
- def,
- _("no WWNN supplied for
'%s'")) < 0) {
- goto out;
+ &data->scsi_host.wwnn) < 0) {
+ if (virRandomGenerateWWN(&data->scsi_host.wwnn) < 0) {
+ virNodeDeviceReportError(VIR_ERR_INTERNAL_ERROR,
+ _("no WWNN supplied for '%s',
and "
+ "auto-generation failed"),
+ def->name);
+ goto out;
+ }
}
if (virNodeDevCapsDefParseString("string(./wwpn[1])",
ctxt,
- &data->scsi_host.wwpn,
- def,
- _("no WWPN supplied for
'%s'")) < 0) {
- goto out;
+ &data->scsi_host.wwpn) < 0) {
+ if (virRandomGenerateWWN(&data->scsi_host.wwpn) < 0) {
+ virNodeDeviceReportError(VIR_ERR_INTERNAL_ERROR,
+ _("no WWPN supplied for '%s',
and "
+ "auto-generation failed"),
+ def->name);
+ goto out;
+ }
}
ctxt->node = orignode2;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index d6ad36c..421986b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1373,6 +1373,7 @@ virPidFileDeletePath;
# virrandom.h
virRandomBits;
+virRandomGenerateWWN;
virRandomInitialize;
diff --git a/src/util/virrandom.c b/src/util/virrandom.c
index ec0cf03..3116275 100644
--- a/src/util/virrandom.c
+++ b/src/util/virrandom.c
@@ -22,10 +22,15 @@
#include <config.h>
#include <stdlib.h>
+#include <inttypes.h>
#include "virrandom.h"
#include "threads.h"
#include "count-one-bits.h"
+#include "util.h"
+#include "virterror_internal.h"
+
+#define VIR_FROM_THIS VIR_FROM_NONE
static char randomState[128];
static struct random_data randomData;
@@ -79,3 +84,16 @@ uint64_t virRandomBits(int nbits)
virMutexUnlock(&randomLock);
return ret;
}
+
+#define QUMRANET_OUI "001a4a"
+
+int
+virRandomGenerateWWN(char **wwn) {
+ if (virAsprintf(wwn, "5" QUMRANET_OUI "%09" PRIx64,
+ virRandomBits(36)) < 0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/src/util/virrandom.h b/src/util/virrandom.h
index e180a2f..443451e 100644
--- a/src/util/virrandom.h
+++ b/src/util/virrandom.h
@@ -27,5 +27,6 @@
int virRandomInitialize(uint32_t seed) ATTRIBUTE_RETURN_CHECK;
uint64_t virRandomBits(int nbits);
+int virRandomGenerateWWN(char **wwn);
#endif /* __VIR_RANDOM_H__ */
--
1.7.7.3