projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| f032c2f7 RL |
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. | |
| 25 | */ | |
| 26 | ||
| 27 | /* | |
| 28 | * The FCoE ethertype eventually goes in net/if_ether.h. | |
| 29 | */ | |
| 30 | #ifndef ETH_P_FCOE | |
| 31 | #define ETH_P_FCOE 0x8906 /* FCOE ether type */ | |
| 32 | #endif | |
| 33 | ||
| f032c2f7 RL |
34 | /* |
| 35 | * FC_FCOE_OUI hasn't been standardized yet. XXX TBD. | |
| 36 | */ | |
| 37 | #ifndef FC_FCOE_OUI | |
| 38 | #define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE dest MAC TBD */ | |
| 39 | #endif | |
| 40 | ||
| 41 | /* | |
| 42 | * The destination MAC address for the fabric login may get a different OUI. | |
| 43 | * This isn't standardized yet. | |
| 44 | */ | |
| 45 | #ifndef FC_FCOE_FLOGI_MAC | |
| 46 | /* gateway MAC - TBD */ | |
| 47 | #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe } | |
| 48 | #endif | |
| 49 | ||
| 50 | #define FC_FCOE_VER 0 /* version */ | |
| 51 | ||
| 52 | /* | |
| 53 | * Ethernet Addresses based on FC S_ID and D_ID. | |
| 54 | * Generated by FC_FCOE_OUI | S_ID/D_ID | |
| 55 | */ | |
| 56 | #define FC_FCOE_ENCAPS_ID(n) (((u64) FC_FCOE_OUI << 24) | (n)) | |
| 57 | #define FC_FCOE_DECAPS_ID(n) ((n) >> 24) | |
| 58 | ||
| 59 | /* | |
| 60 | * FCoE frame header - 14 bytes | |
| 61 | * | |
| 62 | * This is the August 2007 version of the FCoE header as defined by T11. | |
| 63 | * This follows the VLAN header, which includes the ethertype. | |
| 64 | */ | |
| 65 | struct fcoe_hdr { | |
| 66 | __u8 fcoe_ver; /* version field - upper 4 bits */ | |
| 67 | __u8 fcoe_resvd[12]; /* reserved - send zero and ignore */ | |
| 68 | __u8 fcoe_sof; /* start of frame per RFC 3643 */ | |
| 69 | }; | |
| 70 | ||
| 71 | #define FC_FCOE_DECAPS_VER(hp) ((hp)->fcoe_ver >> 4) | |
| 72 | #define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4) | |
| 73 | ||
| 74 | /* | |
| 75 | * FCoE CRC & EOF - 8 bytes. | |
| 76 | */ | |
| 77 | struct fcoe_crc_eof { | |
| 78 | __le32 fcoe_crc32; /* CRC for FC packet */ | |
| 79 | __u8 fcoe_eof; /* EOF from RFC 3643 */ | |
| 80 | __u8 fcoe_resvd[3]; /* reserved - send zero and ignore */ | |
| 81 | } __attribute__((packed)); | |
| 82 | ||
| 83 | /* | |
| 84 | * Minimum FCoE + FC header length | |
| 85 | * 14 bytes FCoE header + 24 byte FC header = 38 bytes | |
| 86 | */ | |
| 87 | #define FCOE_HEADER_LEN 38 | |
| 88 | ||
| 89 | /* | |
| 90 | * Minimum FCoE frame size | |
| 91 | * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes | |
| 92 | */ | |
| 93 | #define FCOE_MIN_FRAME 46 | |
| 94 | ||
| 95 | /* | |
| 96 | * fc_fcoe_set_mac - Store OUI + DID into MAC address field. | |
| 97 | * @mac: mac address to be set | |
| 98 | * @did: fc dest id to use | |
| 99 | */ | |
| 100 | static inline void fc_fcoe_set_mac(u8 *mac, u8 *did) | |
| 101 | { | |
| 102 | mac[0] = (u8) (FC_FCOE_OUI >> 16); | |
| 103 | mac[1] = (u8) (FC_FCOE_OUI >> 8); | |
| 104 | mac[2] = (u8) FC_FCOE_OUI; | |
| 105 | mac[3] = did[0]; | |
| 106 | mac[4] = did[1]; | |
| 107 | mac[5] = did[2]; | |
| 108 | } | |
| 109 | ||
| 110 | #endif /* _FC_FCOE_H_ */ |