Critics have remarked that those four worthies were truly peerless throughout the ages; yet the present falls short of the pastβthe ancients favored unadorned simplicity, whereas the moderns prefer refined elegance. Styles of substance and ornament rise and fall in succession, shifting with the changing mores of the times; such evolution is simply the natural order of things. The ideal lies in honoring antiquity without clashing with the present, and embracing modernity without succumbing to its flawsβembodying that perfect balance of substance and refinement that defines the true gentleman. There is surely no need to abandon a carved palace in favor of a cave dwelling, or to trade a jade carriage for a primitive cart with solid wooden wheels.
Current path: usr/include/linux/
β Cloned to:
β¬οΈ Go up: /usr/include
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* Global definitions for Fibre Channel.
*
* Version: @(#)if_fc.h 0.0 11/20/98
*
* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Donald Becker, <becker@super.org>
* Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
* Vineet Abraham, <vma@iol.unh.edu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_IF_FC_H
#define _LINUX_IF_FC_H
#include <linux/types.h>
#define FC_ALEN 6 /* Octets in one ethernet addr */
#define FC_HLEN (sizeof(struct fch_hdr)+sizeof(struct fcllc))
#define FC_ID_LEN 3 /* Octets in a Fibre Channel Address */
/* LLC and SNAP constants */
#define EXTENDED_SAP 0xAA
#define UI_CMD 0x03
/* This is NOT the Fibre Channel frame header. The FC frame header is
* constructed in the driver as the Tachyon needs certain fields in
* certains positions. So, it can't be generalized here.*/
struct fch_hdr {
__u8 daddr[FC_ALEN]; /* destination address */
__u8 saddr[FC_ALEN]; /* source address */
};
/* This is a Fibre Channel LLC structure */
struct fcllc {
__u8 dsap; /* destination SAP */
__u8 ssap; /* source SAP */
__u8 llc; /* LLC control field */
__u8 protid[3]; /* protocol id */
__be16 ethertype; /* ether type field */
};
#endif /* _LINUX_IF_FC_H */