| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright(c) 2007 Intel Corporation. All rights reserved. |
| * |
| * Maintained at www.Open-FCoE.org |
| */ |
| |
| #ifndef _FC_FCOE_H_ |
| #define _FC_FCOE_H_ |
| |
| /* |
| * FCoE - Fibre Channel over Ethernet. |
| * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf) |
| */ |
| |
| /* |
| * Default FC_FCOE_OUI / FC-MAP value. |
| */ |
| #define FC_FCOE_OUI 0x0efc00 /* upper 24 bits of FCOE MAC */ |
| |
| /* |
| * Fabric Login (FLOGI) MAC for non-FIP use. Non-FIP use is deprecated. |
| */ |
| #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe } |
| |
| #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 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 |
| |
| /* |
| * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10. |
| */ |
| struct fcoe_fc_els_lesb { |
| __be32 lesb_link_fail; /* link failure count */ |
| __be32 lesb_vlink_fail; /* virtual link failure count */ |
| __be32 lesb_miss_fka; /* missing FIP keep-alive count */ |
| __be32 lesb_symb_err; /* symbol error during carrier count */ |
| __be32 lesb_err_block; /* errored block count */ |
| __be32 lesb_fcs_error; /* frame check sequence error count */ |
| }; |
| |
| /* |
| * 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_ */ |
