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 ac2c52e..3b3b322 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1100,6 +1100,7 @@ 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