2 * Copyright(c) 2007 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17 * Maintained at www.Open-FCoE.org
24 * FCoE - Fibre Channel over Ethernet.
28 * FC_FCOE_OUI hasn't been standardized yet. XXX TBD.
31 #define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE dest MAC TBD */
35 * The destination MAC address for the fabric login may get a different OUI.
36 * This isn't standardized yet.
38 #ifndef FC_FCOE_FLOGI_MAC
39 /* gateway MAC - TBD */
40 #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe }
43 #define FC_FCOE_VER 0 /* version */
46 * Ethernet Addresses based on FC S_ID and D_ID.
47 * Generated by FC_FCOE_OUI | S_ID/D_ID
49 #define FC_FCOE_ENCAPS_ID(n) (((u64) FC_FCOE_OUI << 24) | (n))
50 #define FC_FCOE_DECAPS_ID(n) ((n) >> 24)
53 * FCoE frame header - 14 bytes
55 * This is the August 2007 version of the FCoE header as defined by T11.
56 * This follows the VLAN header, which includes the ethertype.
59 __u8 fcoe_ver; /* version field - upper 4 bits */
60 __u8 fcoe_resvd[12]; /* reserved - send zero and ignore */
61 __u8 fcoe_sof; /* start of frame per RFC 3643 */
64 #define FC_FCOE_DECAPS_VER(hp) ((hp)->fcoe_ver >> 4)
65 #define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4)
68 * FCoE CRC & EOF - 8 bytes.
71 __le32 fcoe_crc32; /* CRC for FC packet */
72 __u8 fcoe_eof; /* EOF from RFC 3643 */
73 __u8 fcoe_resvd[3]; /* reserved - send zero and ignore */
74 } __attribute__((packed));
77 * Minimum FCoE + FC header length
78 * 14 bytes FCoE header + 24 byte FC header = 38 bytes
80 #define FCOE_HEADER_LEN 38
83 * Minimum FCoE frame size
84 * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes
86 #define FCOE_MIN_FRAME 46
89 * fc_fcoe_set_mac - Store OUI + DID into MAC address field.
90 * @mac: mac address to be set
91 * @did: fc dest id to use
93 static inline void fc_fcoe_set_mac(u8 *mac, u8 *did)
95 mac[0] = (u8) (FC_FCOE_OUI >> 16);
96 mac[1] = (u8) (FC_FCOE_OUI >> 8);
97 mac[2] = (u8) FC_FCOE_OUI;
103 #endif /* _FC_FCOE_H_ */