projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a61127c2 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| f032c2f7 RL |
2 | /* |
| 3 | * Copyright(c) 2007 Intel Corporation. All rights reserved. | |
| 4 | * | |
| f032c2f7 RL |
5 | * Maintained at www.Open-FCoE.org |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _FC_FCOE_H_ | |
| 9 | #define _FC_FCOE_H_ | |
| 10 | ||
| 11 | /* | |
| 12 | * FCoE - Fibre Channel over Ethernet. | |
| 5d4a2e29 | 13 | * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf) |
| f032c2f7 RL |
14 | */ |
| 15 | ||
| f032c2f7 | 16 | /* |
| 5d4a2e29 | 17 | * Default FC_FCOE_OUI / FC-MAP value. |
| f032c2f7 | 18 | */ |
| 5d4a2e29 | 19 | #define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE MAC */ |
| f032c2f7 RL |
20 | |
| 21 | /* | |
| 5d4a2e29 | 22 | * Fabric Login (FLOGI) MAC for non-FIP use. Non-FIP use is deprecated. |
| f032c2f7 | 23 | */ |
| f032c2f7 | 24 | #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe } |
| f032c2f7 RL |
25 | |
| 26 | #define FC_FCOE_VER 0 /* version */ | |
| 27 | ||
| 28 | /* | |
| 29 | * Ethernet Addresses based on FC S_ID and D_ID. | |
| 30 | * Generated by FC_FCOE_OUI | S_ID/D_ID | |
| 31 | */ | |
| 32 | #define FC_FCOE_ENCAPS_ID(n) (((u64) FC_FCOE_OUI << 24) | (n)) | |
| 33 | #define FC_FCOE_DECAPS_ID(n) ((n) >> 24) | |
| 34 | ||
| 35 | /* | |
| 36 | * FCoE frame header - 14 bytes | |
| f032c2f7 RL |
37 | * This follows the VLAN header, which includes the ethertype. |
| 38 | */ | |
| 39 | struct fcoe_hdr { | |
| 40 | __u8 fcoe_ver; /* version field - upper 4 bits */ | |
| 41 | __u8 fcoe_resvd[12]; /* reserved - send zero and ignore */ | |
| 42 | __u8 fcoe_sof; /* start of frame per RFC 3643 */ | |
| 43 | }; | |
| 44 | ||
| 45 | #define FC_FCOE_DECAPS_VER(hp) ((hp)->fcoe_ver >> 4) | |
| 46 | #define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4) | |
| 47 | ||
| 48 | /* | |
| 49 | * FCoE CRC & EOF - 8 bytes. | |
| 50 | */ | |
| 51 | struct fcoe_crc_eof { | |
| 52 | __le32 fcoe_crc32; /* CRC for FC packet */ | |
| 53 | __u8 fcoe_eof; /* EOF from RFC 3643 */ | |
| 54 | __u8 fcoe_resvd[3]; /* reserved - send zero and ignore */ | |
| 55 | } __attribute__((packed)); | |
| 56 | ||
| 57 | /* | |
| 58 | * Minimum FCoE + FC header length | |
| 59 | * 14 bytes FCoE header + 24 byte FC header = 38 bytes | |
| 60 | */ | |
| 61 | #define FCOE_HEADER_LEN 38 | |
| 62 | ||
| 63 | /* | |
| 64 | * Minimum FCoE frame size | |
| 65 | * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes | |
| 66 | */ | |
| 67 | #define FCOE_MIN_FRAME 46 | |
| 68 | ||
| b21a0c39 YZ |
69 | /* |
| 70 | * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10. | |
| 71 | */ | |
| 72 | struct fcoe_fc_els_lesb { | |
| 73 | __be32 lesb_link_fail; /* link failure count */ | |
| 74 | __be32 lesb_vlink_fail; /* virtual link failure count */ | |
| 75 | __be32 lesb_miss_fka; /* missing FIP keep-alive count */ | |
| 76 | __be32 lesb_symb_err; /* symbol error during carrier count */ | |
| 77 | __be32 lesb_err_block; /* errored block count */ | |
| 78 | __be32 lesb_fcs_error; /* frame check sequence error count */ | |
| 79 | }; | |
| 80 | ||
| f032c2f7 RL |
81 | /* |
| 82 | * fc_fcoe_set_mac - Store OUI + DID into MAC address field. | |
| 83 | * @mac: mac address to be set | |
| 84 | * @did: fc dest id to use | |
| 85 | */ | |
| 86 | static inline void fc_fcoe_set_mac(u8 *mac, u8 *did) | |
| 87 | { | |
| 88 | mac[0] = (u8) (FC_FCOE_OUI >> 16); | |
| 89 | mac[1] = (u8) (FC_FCOE_OUI >> 8); | |
| 90 | mac[2] = (u8) FC_FCOE_OUI; | |
| 91 | mac[3] = did[0]; | |
| 92 | mac[4] = did[1]; | |
| 93 | mac[5] = did[2]; | |
| 94 | } | |
| 95 | ||
| 96 | #endif /* _FC_FCOE_H_ */ |