| 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
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| 4 | * operating system. INET is implemented using the BSD Socket |
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| 5 | * interface as the means of communication with the user level. |
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| 6 | * |
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| 7 | * Global definitions for Fibre Channel. |
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| 8 | * |
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| 9 | * Version: @(#)if_fc.h 0.0 11/20/98 |
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| 10 | * |
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| 11 | * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
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| 12 | * Donald Becker, <becker@super.org> |
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| 13 | * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> |
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| 14 | * Vineet Abraham, <vma@iol.unh.edu> |
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| 15 | * |
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| 16 | * This program is free software; you can redistribute it and/or |
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| 17 | * modify it under the terms of the GNU General Public License |
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| 18 | * as published by the Free Software Foundation; either version |
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| 19 | * 2 of the License, or (at your option) any later version. |
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| 20 | */ |
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| 21 | #ifndef _LINUX_IF_FC_H |
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| 22 | #define _LINUX_IF_FC_H |
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| 23 | |
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| 24 | #include <linux/types.h> |
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| 25 | |
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| 26 | #define FC_ALEN 6 /* Octets in one ethernet addr */ |
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| 27 | #define FC_HLEN (sizeof(struct fch_hdr)+sizeof(struct fcllc)) |
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| 28 | #define FC_ID_LEN 3 /* Octets in a Fibre Channel Address */ |
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| 29 | |
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| 30 | /* LLC and SNAP constants */ |
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| 31 | #define EXTENDED_SAP 0xAA |
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| 32 | #define UI_CMD 0x03 |
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| 33 | |
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| 34 | /* This is NOT the Fibre Channel frame header. The FC frame header is |
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| 35 | * constructed in the driver as the Tachyon needs certain fields in |
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| 36 | * certains positions. So, it can't be generalized here.*/ |
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| 37 | |
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| 38 | struct fch_hdr { |
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| 39 | __u8 daddr[FC_ALEN]; /* destination address */ |
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| 40 | __u8 saddr[FC_ALEN]; /* source address */ |
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| 41 | }; |
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| 42 | |
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| 43 | /* This is a Fibre Channel LLC structure */ |
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| 44 | struct fcllc { |
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| 45 | __u8 dsap; /* destination SAP */ |
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| 46 | __u8 ssap; /* source SAP */ |
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| 47 | __u8 llc; /* LLC control field */ |
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| 48 | __u8 protid[3]; /* protocol id */ |
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| 49 | __be16 ethertype; /* ether type field */ |
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| 50 | }; |
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| 51 | |
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| 52 | #endif /* _LINUX_IF_FC_H */ |
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| 53 | |
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