decnet.h

该软件根据网络数据生成NetFlow记录。NetFlow可用于网络规划、负载均衡、安全监控等

/*
 * Copyright (c) 1992, 1994, 1996
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Header: decnet.h,v 1.6 96/07/15 18:15:19 leres Exp $ (LBL)
 */

typedef unsigned char byte[1];		/* single byte field */
typedef unsigned char word[2];		/* 2 byte field */
typedef unsigned char longword[4];	/* 4 bytes field */

/*
 * Definitions for DECNET Phase IV protocol headers
 */
union etheraddress {
	unsigned char   dne_addr[6];		/* full ethernet address */
	struct {
		unsigned char dne_hiord[4];	/* DECnet HIORD prefix */
		unsigned char dne_nodeaddr[2];	/* DECnet node address */
	} dne_remote;
};

typedef union etheraddress etheraddr;	/* Ethernet address */

#define HIORD 0x000400aa		/* high 32-bits of address (swapped) */

#define AREAMASK	0176000		/* mask for area field */
#define	AREASHIFT	10		/* bit-offset for area field */
#define NODEMASK	01777		/* mask for node address field */

#define DN_MAXADDL	20		/* max size of DECnet address */
struct dn_naddr {
	unsigned short	a_len;		/* length of address */
	unsigned char a_addr[DN_MAXADDL]; /* address as bytes */
};

/*
 * Define long and short header formats.
 */
struct shorthdr
  {
    byte	sh_flags;		/* route flags */
    word	sh_dst;			/* destination node address */
    word	sh_src;			/* source node address */
    byte	sh_visits;		/* visit count */
  };

struct longhdr
  {
    byte	lg_flags;		/* route flags */
    byte	lg_darea;		/* destination area (reserved) */
    byte	lg_dsarea;		/* destination subarea (reserved) */
    etheraddr	lg_dst;			/* destination id */
    byte	lg_sarea;		/* source area (reserved) */
    byte	lg_ssarea;		/* source subarea (reserved) */
    etheraddr	lg_src;			/* source id */
    byte	lg_nextl2;		/* next level 2 router (reserved) */
    byte	lg_visits;		/* visit count */
    byte	lg_service;		/* service class (reserved) */
    byte	lg_pt;			/* protocol type (reserved) */
  };

union routehdr
  {
    struct shorthdr rh_short;		/* short route header */
    struct longhdr rh_long;		/* long route header */
  };

/*
 * Define the values of various fields in the protocol messages.
 *
 * 1. Data packet formats.
 */
#define RMF_MASK	7		/* mask for message type */
#define RMF_SHORT	2		/* short message format */
#define RMF_LONG	6		/* long message format */
#ifndef RMF_RQR
#define RMF_RQR		010		/* request return to sender */
#define RMF_RTS		020		/* returning to sender */
#define RMF_IE		040		/* intra-ethernet packet */
#endif /* RMR_RQR */
#define RMF_FVER	0100		/* future version flag */
#define RMF_PAD		0200		/* pad field */
#define RMF_PADMASK	0177		/* pad field mask */

#define VIS_MASK	077		/* visit field mask */

/*
 * 2. Control packet formats.
 */
#define RMF_CTLMASK	017		/* mask for message type */
#define RMF_CTLMSG	01		/* control message indicator */
#define RMF_INIT	01		/* initialization message */
#define RMF_VER		03		/* verification message */
#define RMF_TEST	05		/* hello and test message */
#define RMF_L1ROUT	07		/* level 1 routing message */
#define RMF_L2ROUT	011		/* level 2 routing message */
#define RMF_RHELLO	013		/* router hello message */
#define RMF_EHELLO	015		/* endnode hello message */

#define TI_L2ROUT	01		/* level 2 router */
#define TI_L1ROUT	02		/* level 1 router */
#define TI_ENDNODE	03		/* endnode */
#define TI_VERIF	04		/* verification required */
#define TI_BLOCK	010		/* blocking requested */

#define VE_VERS		2		/* version number (2) */
#define VE_ECO		0		/* ECO number */
#define VE_UECO		0		/* user ECO number (0) */

#define P3_VERS		1		/* phase III version number (1) */
#define P3_ECO		3		/* ECO number (3) */
#define P3_UECO		0		/* user ECO number (0) */

#define II_L2ROUT	01		/* level 2 router */
#define II_L1ROUT	02		/* level 1 router */
#define II_ENDNODE	03		/* endnode */
#define II_VERIF	04		/* verification required */
#define II_NOMCAST	040		/* no multicast traffic accepted */
#define II_BLOCK	0100		/* blocking requested */
#define II_TYPEMASK	03		/* mask for node type */

#define TESTDATA	0252		/* test data bytes */
#define TESTLEN		1		/* length of transmitted test data */

/*
 * Define control message formats.
 */
struct initmsgIII			/* phase III initialization message */
  {
    byte	inIII_flags;		/* route flags */
    word	inIII_src;		/* source node address */
    byte	inIII_info;		/* routing layer information */
    word	inIII_blksize;		/* maximum data link block size */
    byte	inIII_vers;		/* version number */
    byte	inIII_eco;		/* ECO number */
    byte	inIII_ueco;		/* user ECO number */
    byte	inIII_rsvd;		/* reserved image field */
  };

struct initmsg				/* initialization message */
  {
    byte	in_flags;		/* route flags */
    word	in_src;			/* source node address */
    byte	in_info;		/* routing layer information */
    word	in_blksize;		/* maximum data link block size */
    byte	in_vers;		/* version number */
    byte	in_eco;			/* ECO number */
    byte	in_ueco;		/* user ECO number */
    word	in_hello;		/* hello timer */
    byte	in_rsvd;		/* reserved image field */
  };

struct verifmsg				/* verification message */
  {
    byte	ve_flags;		/* route flags */
    word	ve_src;			/* source node address */
    byte	ve_fcnval;		/* function value image field */
  };

struct testmsg				/* hello and test message */
  {
    byte	te_flags;		/* route flags */
    word	te_src;			/* source node address */
    byte	te_data;		/* test data image field */
  };

struct l1rout				/* level 1 routing message */
  {
    byte	r1_flags;		/* route flags */
    word	r1_src;			/* source node address */
    byte	r1_rsvd;		/* reserved field */
  };

struct l2rout				/* level 2 routing message */
  {
    byte	r2_flags;		/* route flags */
    word	r2_src;			/* source node address */
    byte	r2_rsvd;		/* reserved field */
  };

struct rhellomsg			/* router hello message */
  {
    byte	rh_flags;		/* route flags */
    byte	rh_vers;		/* version number */
    byte	rh_eco;			/* ECO number */
    byte	rh_ueco;		/* user ECO number */
    etheraddr	rh_src;			/* source id */
    byte	rh_info;		/* routing layer information */
    word	rh_blksize;		/* maximum data link block size */
    byte	rh_priority;		/* router's priority */
    byte	rh_area;		/* reserved */
    word	rh_hello;		/* hello timer */
    byte	rh_mpd;			/* reserved */
  };

struct ehellomsg			/* endnode hello message */
  {
    byte	eh_flags;		/* route flags */
    byte	eh_vers;		/* version number */
    byte	eh_eco;			/* ECO number */
    byte	eh_ueco;		/* user ECO number */
    etheraddr	eh_src;			/* source id */
    byte	eh_info;		/* routing layer information */
    word	eh_blksize;		/* maximum data link block size */
    byte	eh_area;		/* area (reserved) */
    byte	eh_seed[8];		/* verification seed */
    etheraddr	eh_router;		/* designated router */
    word	eh_hello;		/* hello timer */
    byte	eh_mpd;			/* (reserved) */
    byte	eh_data;		/* test data image field */