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Member "open-fcoe/usr/common/libfc/src/fc/fc_wwn_from_wwn.c" of archive open-fcoe.tar.gz:

/*
 * Copyright(c) 2007 Intel Corporation. All rights reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Maintained at www.Open-FCoE.org
 */
#include "net_types.h"
#include "sa_log.h"
#include "sa_assert.h"
#include "fc_types.h"

/*
 * Convert 48-bit IEEE OUI to 64-bit FC WWN.
 */
fc_wwn_t fc_wwn_from_wwn(fc_wwn_t wwn, u_int scheme, u_int port)
{
	u_int64_t mac;
	u_int64_t vend;

	switch (wwn >> 60) {	/* get OUI and vendor-specified field */
	case 0:
	case 1:
		mac = wwn & ((1ULL << 48) - 1);
		vend = port;
		break;
	case 2:
		ASSERT(port < 0x1000);
		mac = wwn & ((1ULL << 48) - 1);
		vend = ((wwn >> 48) + port) & 0xfff;
		break;
	default:
		ASSERT_NOTREACHED;
		mac = vend = 0;
		break;
	}
	wwn = fc_wwn_from_mac(mac, scheme, vend);
	return wwn;
}