libvirt/src/util/virrandom.h
Osier Yang 7c90026db9 npiv: Auto-generate WWN if it's not specified
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 for the 3-bytes vendor ID,
we uses the OUI according to underlying hypervisor type, (invoking
virConnectGetType to get the virt type). e.g. If virConnectGetType
returns "QEMU", we use Qumranet's OUI (00:1A:4A), if returns
ESX|VMWARE, we use VMWARE's OUI (00:05:69). Currently it only
supports qemu|xen|libxl|xenapi|hyperv|esx|vmware drivers. The last
36 bits are auto-generated.
2012-02-10 12:53:25 +08:00

33 lines
1.1 KiB
C

/*
* Copyright (C) 2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef __VIR_RANDOM_H__
# define __VIR_RANDOM_H__
# include "internal.h"
# include <stdint.h>
int virRandomInitialize(uint32_t seed) ATTRIBUTE_RETURN_CHECK;
uint64_t virRandomBits(int nbits);
int virRandomGenerateWWN(char **wwn, const char *virt_type);
#endif /* __VIR_RANDOM_H__ */