104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
|
/*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _FC_FCOE_H_
|
||
|
|
#define _FC_FCOE_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FCoE - Fibre Channel over Ethernet.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FC_FCOE_OUI hasn't been standardized yet. XXX TBD.
|
||
|
|
*/
|
||
|
|
#ifndef FC_FCOE_OUI
|
||
|
|
#define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE dest MAC TBD */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The destination MAC address for the fabric login may get a different OUI.
|
||
|
|
* This isn't standardized yet.
|
||
|
|
*/
|
||
|
|
#ifndef FC_FCOE_FLOGI_MAC
|
||
|
|
/* gateway MAC - TBD */
|
||
|
|
#define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define FC_FCOE_VER 0 /* version */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Ethernet Addresses based on FC S_ID and D_ID.
|
||
|
|
* Generated by FC_FCOE_OUI | S_ID/D_ID
|
||
|
|
*/
|
||
|
|
#define FC_FCOE_ENCAPS_ID(n) (((u64) FC_FCOE_OUI << 24) | (n))
|
||
|
|
#define FC_FCOE_DECAPS_ID(n) ((n) >> 24)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FCoE frame header - 14 bytes
|
||
|
|
*
|
||
|
|
* This is the August 2007 version of the FCoE header as defined by T11.
|
||
|
|
* This follows the VLAN header, which includes the ethertype.
|
||
|
|
*/
|
||
|
|
struct fcoe_hdr {
|
||
|
|
__u8 fcoe_ver; /* version field - upper 4 bits */
|
||
|
|
__u8 fcoe_resvd[12]; /* reserved - send zero and ignore */
|
||
|
|
__u8 fcoe_sof; /* start of frame per RFC 3643 */
|
||
|
|
};
|
||
|
|
|
||
|
|
#define FC_FCOE_DECAPS_VER(hp) ((hp)->fcoe_ver >> 4)
|
||
|
|
#define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FCoE CRC & EOF - 8 bytes.
|
||
|
|
*/
|
||
|
|
struct fcoe_crc_eof {
|
||
|
|
__le32 fcoe_crc32; /* CRC for FC packet */
|
||
|
|
__u8 fcoe_eof; /* EOF from RFC 3643 */
|
||
|
|
__u8 fcoe_resvd[3]; /* reserved - send zero and ignore */
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Minimum FCoE + FC header length
|
||
|
|
* 14 bytes FCoE header + 24 byte FC header = 38 bytes
|
||
|
|
*/
|
||
|
|
#define FCOE_HEADER_LEN 38
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Minimum FCoE frame size
|
||
|
|
* 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes
|
||
|
|
*/
|
||
|
|
#define FCOE_MIN_FRAME 46
|
||
|
|
|
||
|
|
/*
|
||
|
|
* fc_fcoe_set_mac - Store OUI + DID into MAC address field.
|
||
|
|
* @mac: mac address to be set
|
||
|
|
* @did: fc dest id to use
|
||
|
|
*/
|
||
|
|
static inline void fc_fcoe_set_mac(u8 *mac, u8 *did)
|
||
|
|
{
|
||
|
|
mac[0] = (u8) (FC_FCOE_OUI >> 16);
|
||
|
|
mac[1] = (u8) (FC_FCOE_OUI >> 8);
|
||
|
|
mac[2] = (u8) FC_FCOE_OUI;
|
||
|
|
mac[3] = did[0];
|
||
|
|
mac[4] = did[1];
|
||
|
|
mac[5] = did[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _FC_FCOE_H_ */
|