92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Copyright(c) 2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Maintained at www.Open-FCoE.org
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*/
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <scsi/libfc.h>
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MODULE_AUTHOR("Open-FCoE.org");
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MODULE_DESCRIPTION("FCoE");
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MODULE_LICENSE("GPL v2");
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/**
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* fcoe_wwn_from_mac() - Converts 48-bit IEEE MAC address to 64-bit FC WWN.
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* @mac: mac address
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* @scheme: check port
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* @port: port indicator for converting
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*
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* Returns: u64 fc world wide name
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*/
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u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
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unsigned int scheme, unsigned int port)
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{
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u64 wwn;
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u64 host_mac;
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/* The MAC is in NO, so flip only the low 48 bits */
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host_mac = ((u64) mac[0] << 40) |
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((u64) mac[1] << 32) |
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((u64) mac[2] << 24) |
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((u64) mac[3] << 16) |
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((u64) mac[4] << 8) |
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(u64) mac[5];
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WARN_ON(host_mac >= (1ULL << 48));
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wwn = host_mac | ((u64) scheme << 60);
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switch (scheme) {
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case 1:
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WARN_ON(port != 0);
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break;
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case 2:
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WARN_ON(port >= 0xfff);
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wwn |= (u64) port << 48;
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break;
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default:
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WARN_ON(1);
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break;
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}
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return wwn;
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}
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EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
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/**
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* fcoe_libfc_config() - sets up libfc related properties for lport
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* @lp: ptr to the fc_lport
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* @tt: libfc function template
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*
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* Returns : 0 for success
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*/
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int fcoe_libfc_config(struct fc_lport *lp, struct libfc_function_template *tt)
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{
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/* Set the function pointers set by the LLDD */
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memcpy(&lp->tt, tt, sizeof(*tt));
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if (fc_fcp_init(lp))
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return -ENOMEM;
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fc_exch_init(lp);
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fc_elsct_init(lp);
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fc_lport_init(lp);
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fc_rport_init(lp);
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fc_disc_init(lp);
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return 0;
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}
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EXPORT_SYMBOL_GPL(fcoe_libfc_config);
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