5:52 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 | 35 ++++++++++++++++++-----------------
src/libvirt_private.syms | 1 +
src/util/util.c | 20 ++++++++++++++++++++
src/util/util.h | 1 +
4 files changed, 40 insertions(+), 17 deletions(-)
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index d9dc9ac..e7cc243 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -63,19 +63,12 @@ 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 +756,26 @@ 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 (virGenerateWWN(&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 (virGenerateWWN(&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 99a1099..463969d 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1101,6 +1101,7 @@ virFileWriteStr;
virFindFileInPath;
virFormatMacAddr;
virGenerateMacAddr;
+virGenerateWWN;
virGetGroupID;
virGetHostname;
virGetUserDirectory;
diff --git a/src/util/util.c b/src/util/util.c
index 6f46d53..e6f4559 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -1837,6 +1837,26 @@ void virGenerateMacAddr(const unsigned char *prefix,
addr[5] = virRandom(256);
}
+#define QUMRANET_OUI "001a4a"
+
+int virGenerateWWN(char **wwn) {
+ int suffix[5];
+
+ suffix[0] = virRandom(16);
+ suffix[1] = virRandom(256);
+ suffix[2] = virRandom(256);
+ suffix[3] = virRandom(256);
+ suffix[4] = virRandom(256);
+
+ if (virAsprintf(wwn, "%x%s%x%02x%02x%02x%02x", 0x5, QUMRANET_OUI,
+ suffix[0], suffix[1], suffix[2],
+ suffix[3], suffix[4]) < 0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ return 0;
+}
int virEnumFromString(const char *const*types,
unsigned int ntypes,
diff --git a/src/util/util.h b/src/util/util.h
index c9c785b..d7a0840 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -186,6 +186,7 @@ void virFormatMacAddr(const unsigned char *addr,
char *str);
void virGenerateMacAddr(const unsigned char *prefix,
unsigned char *addr);
+int virGenerateWWN(char **wwn);
int virDiskNameToIndex(const char* str);
char *virIndexToDiskName(int idx, const char *prefix);
--
1.7.7.3