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1 | /* |
2 | * Copyright(c) 2007 Intel Corporation. All rights reserved. | |
3 | * | |
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. | |
7 | * | |
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 | |
11 | * more details. | |
12 | * | |
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. | |
16 | * | |
17 | * Maintained at www.Open-FCoE.org | |
18 | */ | |
19 | ||
20 | #ifndef _FC_FCOE_H_ | |
21 | #define _FC_FCOE_H_ | |
22 | ||
23 | /* | |
24 | * FCoE - Fibre Channel over Ethernet. | |
5d4a2e29 | 25 | * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf) |
f032c2f7 RL |
26 | */ |
27 | ||
f032c2f7 | 28 | /* |
5d4a2e29 | 29 | * Default FC_FCOE_OUI / FC-MAP value. |
f032c2f7 | 30 | */ |
5d4a2e29 | 31 | #define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE MAC */ |
f032c2f7 RL |
32 | |
33 | /* | |
5d4a2e29 | 34 | * Fabric Login (FLOGI) MAC for non-FIP use. Non-FIP use is deprecated. |
f032c2f7 | 35 | */ |
f032c2f7 | 36 | #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe } |
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37 | |
38 | #define FC_FCOE_VER 0 /* version */ | |
39 | ||
40 | /* | |
41 | * Ethernet Addresses based on FC S_ID and D_ID. | |
42 | * Generated by FC_FCOE_OUI | S_ID/D_ID | |
43 | */ | |
44 | #define FC_FCOE_ENCAPS_ID(n) (((u64) FC_FCOE_OUI << 24) | (n)) | |
45 | #define FC_FCOE_DECAPS_ID(n) ((n) >> 24) | |
46 | ||
47 | /* | |
48 | * FCoE frame header - 14 bytes | |
f032c2f7 RL |
49 | * This follows the VLAN header, which includes the ethertype. |
50 | */ | |
51 | struct fcoe_hdr { | |
52 | __u8 fcoe_ver; /* version field - upper 4 bits */ | |
53 | __u8 fcoe_resvd[12]; /* reserved - send zero and ignore */ | |
54 | __u8 fcoe_sof; /* start of frame per RFC 3643 */ | |
55 | }; | |
56 | ||
57 | #define FC_FCOE_DECAPS_VER(hp) ((hp)->fcoe_ver >> 4) | |
58 | #define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4) | |
59 | ||
60 | /* | |
61 | * FCoE CRC & EOF - 8 bytes. | |
62 | */ | |
63 | struct fcoe_crc_eof { | |
64 | __le32 fcoe_crc32; /* CRC for FC packet */ | |
65 | __u8 fcoe_eof; /* EOF from RFC 3643 */ | |
66 | __u8 fcoe_resvd[3]; /* reserved - send zero and ignore */ | |
67 | } __attribute__((packed)); | |
68 | ||
69 | /* | |
70 | * Minimum FCoE + FC header length | |
71 | * 14 bytes FCoE header + 24 byte FC header = 38 bytes | |
72 | */ | |
73 | #define FCOE_HEADER_LEN 38 | |
74 | ||
75 | /* | |
76 | * Minimum FCoE frame size | |
77 | * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes | |
78 | */ | |
79 | #define FCOE_MIN_FRAME 46 | |
80 | ||
b21a0c39 YZ |
81 | /* |
82 | * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10. | |
83 | */ | |
84 | struct fcoe_fc_els_lesb { | |
85 | __be32 lesb_link_fail; /* link failure count */ | |
86 | __be32 lesb_vlink_fail; /* virtual link failure count */ | |
87 | __be32 lesb_miss_fka; /* missing FIP keep-alive count */ | |
88 | __be32 lesb_symb_err; /* symbol error during carrier count */ | |
89 | __be32 lesb_err_block; /* errored block count */ | |
90 | __be32 lesb_fcs_error; /* frame check sequence error count */ | |
91 | }; | |
92 | ||
f032c2f7 RL |
93 | /* |
94 | * fc_fcoe_set_mac - Store OUI + DID into MAC address field. | |
95 | * @mac: mac address to be set | |
96 | * @did: fc dest id to use | |
97 | */ | |
98 | static inline void fc_fcoe_set_mac(u8 *mac, u8 *did) | |
99 | { | |
100 | mac[0] = (u8) (FC_FCOE_OUI >> 16); | |
101 | mac[1] = (u8) (FC_FCOE_OUI >> 8); | |
102 | mac[2] = (u8) FC_FCOE_OUI; | |
103 | mac[3] = did[0]; | |
104 | mac[4] = did[1]; | |
105 | mac[5] = did[2]; | |
106 | } | |
107 | ||
108 | #endif /* _FC_FCOE_H_ */ |