[mirror_frr.git] / isisd / isis_constants.h

/*
 * IS-IS Rout(e)ing protocol - isis_constants.h   
 *
 * Copyright (C) 2001,2002   Sampo Saaristo
 *                           Tampere University of Technology      
 *                           Institute of Communications Engineering
 *
 * This program is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU General Public Licenseas published by the Free 
 * Software Foundation; either version 2 of the License, or (at your option) 
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
 * more details.

 * You should have received a copy of the GNU General Public License along 
 * with this program; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef ISIS_CONSTANTS_H
#define ISIS_CONSTANTS_H

/*
 * Architectural constant values from p. 35 of ISO/IEC 10589
 */

#define MAX_LINK_METRIC               63
#define MAX_PATH_METRIC               1023
#define ISO_SAP                       0xFE
#define INTRADOMAIN_ROUTEING_SELECTOR 0
#define SEQUENCE_MODULUS              4294967296
#define RECEIVE_LSP_BUFFER_SIZE       1492

/*
 * implementation specific jitter values
 */

#define IIH_JITTER                    25	/* % */
#define MAX_AGE_JITTER                 5	/* % */
#define MAX_LSP_GEN_JITTER             5	/* % */
#define CSNP_JITTER                   10	/* % */
#define PSNP_JITTER                   10	/* % */

#define RANDOM_SPREAD           100000.0

/*
 * Default values
 * ISO - 10589
 * Section 7.3.21 - Parameters
 */
#define MAX_AGE                       1200
#define ZERO_AGE_LIFETIME             60
#define MAX_LSP_GEN_INTERVAL          900
#define MIN_LSP_GEN_INTERVAL          30
#define MIN_LSP_TRANS_INTERVAL        5
#define ISIS_MIN_LSP_LIFETIME         380
#define CSNP_INTERVAL                 10
#define PSNP_INTERVAL                 2
#define ISIS_MAX_PATH_SPLITS          3

#define ISIS_LEVELS                   2
#define ISIS_LEVEL1                   1
#define ISIS_LEVEL2                   2

#define HELLO_INTERVAL                10
#define HELLO_MINIMAL HELLO_INTERVAL
#define HELLO_MULTIPLIER              3
#define DEFAULT_PRIORITY              64
/* different vendors implement different values 5-10 on average */
#define LSP_GEN_INTERVAL_DEFAULT      10
#define LSP_INTERVAL                  33	/* msecs */
#define DEFAULT_CIRCUIT_METRICS 10
#define METRICS_UNSUPPORTED 0x80
#define PERIODIC_SPF_INTERVAL         60	/* at the top of my head */
#define MINIMUM_SPF_INTERVAL           5	/* .. same here          */

/*
 * NLPID values
 */
#define NLPID_IP   204
#define NLPID_IPV6 142
#define NLPID_SNAP 128
#define NLPID_CLNP 129
#define NLPID_ESIS 130

/*
 * Return values for functions
 */
#define ISIS_OK       0
#define ISIS_WARNING  1
#define ISIS_ERROR    2
#define ISIS_CRITICAL 3

/*
 * IS-IS Circuit Types
 */

#define IS_LEVEL_1       1
#define IS_LEVEL_2       2
#define IS_LEVEL_1_AND_2 3

#define SNPA_ADDRSTRLEN 18
#define ISIS_SYS_ID_LEN  6
#define SYSID_STRLEN    24

/*
 * LSP bit masks
 */
#define LSPBIT_P   0x80
#define LSPBIT_ATT 0x78
#define LSPBIT_OL  0x04
#define LSPBIT_IST 0x03

/*
 * LSP bit masking macros
 * taken from tcpdumps
 * print-isoclns.c
 */

#define ISIS_MASK_LSP_OL_BIT(x)            ((x)&0x4)
#define ISIS_MASK_LSP_IS_L1_BIT(x)         ((x)&0x1)
#define ISIS_MASK_LSP_IS_L2_BIT(x)         ((x)&0x2)
#define ISIS_MASK_LSP_PARTITION_BIT(x)     ((x)&0x80)
#define ISIS_MASK_LSP_ATT_BITS(x)          ((x)&0x78)
#define ISIS_MASK_LSP_ATT_ERROR_BIT(x)     ((x)&0x40)
#define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x)   ((x)&0x20)
#define ISIS_MASK_LSP_ATT_DELAY_BIT(x)     ((x)&0x10)
#define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x)   ((x)&0x8)

#define LLC_LEN 3

/* we need to be aware of the fact we are using ISO sized
 * packets, using isomtu = mtu - LLC_LEN
 */
#define ISO_MTU(C) \
          (C->circ_type==CIRCUIT_T_BROADCAST) ? \
          (C->interface->mtu - LLC_LEN) : (C->interface->mtu)

#ifndef ETH_ALEN
#define ETH_ALEN 6
#endif

#endif /* ISIS_CONSTANTS_H */
Commit	Line	Data
eb5d44eb	1	/*
	2	* IS-IS Rout(e)ing protocol - isis_constants.h
	3	*
	4	* Copyright (C) 2001,2002 Sampo Saaristo
	5	* Tampere University of Technology
	6	* Institute of Communications Engineering
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public Licenseas published by the Free
	10	* Software Foundation; either version 2 of the License, or (at your option)
	11	* any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,but WITHOUT
	14	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	16	* more details.
	17
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	21	*/
	22
	23	#ifndef ISIS_CONSTANTS_H
	24	#define ISIS_CONSTANTS_H
	25
	26	/*
	27	* Architectural constant values from p. 35 of ISO/IEC 10589
f390d2c7	28	*/
eb5d44eb	29
f390d2c7	30	#define MAX_LINK_METRIC 63
eb5d44eb	31	#define MAX_PATH_METRIC 1023
	32	#define ISO_SAP 0xFE
	33	#define INTRADOMAIN_ROUTEING_SELECTOR 0
	34	#define SEQUENCE_MODULUS 4294967296
	35	#define RECEIVE_LSP_BUFFER_SIZE 1492
	36
	37	/*
	38	* implementation specific jitter values
	39	*/
	40
f390d2c7	41	#define IIH_JITTER 25 /* % */
	42	#define MAX_AGE_JITTER 5 /* % */
	43	#define MAX_LSP_GEN_JITTER 5 /* % */
	44	#define CSNP_JITTER 10 /* % */
	45	#define PSNP_JITTER 10 /* % */
eb5d44eb	46
	47	#define RANDOM_SPREAD 100000.0
	48
	49	/*
	50	* Default values
	51	* ISO - 10589
	52	* Section 7.3.21 - Parameters
	53	*/
	54	#define MAX_AGE 1200
	55	#define ZERO_AGE_LIFETIME 60
	56	#define MAX_LSP_GEN_INTERVAL 900
	57	#define MIN_LSP_GEN_INTERVAL 30
	58	#define MIN_LSP_TRANS_INTERVAL 5
	59	#define ISIS_MIN_LSP_LIFETIME 380
	60	#define CSNP_INTERVAL 10
	61	#define PSNP_INTERVAL 2
	62	#define ISIS_MAX_PATH_SPLITS 3
	63
	64	#define ISIS_LEVELS 2
	65	#define ISIS_LEVEL1 1
	66	#define ISIS_LEVEL2 2
	67
00995cfc	68	#define HELLO_INTERVAL 10
eb5d44eb	69	#define HELLO_MINIMAL HELLO_INTERVAL
	70	#define HELLO_MULTIPLIER 3
	71	#define DEFAULT_PRIORITY 64
	72	/* different vendors implement different values 5-10 on average */
f390d2c7	73	#define LSP_GEN_INTERVAL_DEFAULT 10
f390d2c7	74	#define LSP_INTERVAL 33 /* msecs */
eb5d44eb	75	#define DEFAULT_CIRCUIT_METRICS 10
eb5d44eb	76	#define METRICS_UNSUPPORTED 0x80
f390d2c7	77	#define PERIODIC_SPF_INTERVAL 60 /* at the top of my head */
f390d2c7	78	#define MINIMUM_SPF_INTERVAL 5 /* .. same here */
eb5d44eb	79
	80	/*
	81	* NLPID values
	82	*/
	83	#define NLPID_IP 204
	84	#define NLPID_IPV6 142
2097cd8a	85	#define NLPID_SNAP 128
	86	#define NLPID_CLNP 129
	87	#define NLPID_ESIS 130
eb5d44eb	88
	89	/*
	90	* Return values for functions
	91	*/
	92	#define ISIS_OK 0
	93	#define ISIS_WARNING 1
	94	#define ISIS_ERROR 2
	95	#define ISIS_CRITICAL 3
	96
	97	/*
	98	* IS-IS Circuit Types
	99	*/
	100
	101	#define IS_LEVEL_1 1
	102	#define IS_LEVEL_2 2
	103	#define IS_LEVEL_1_AND_2 3
	104
	105	#define SNPA_ADDRSTRLEN 18
	106	#define ISIS_SYS_ID_LEN 6
	107	#define SYSID_STRLEN 24
	108
	109	/*
	110	* LSP bit masks
	111	*/
	112	#define LSPBIT_P 0x80
	113	#define LSPBIT_ATT 0x78
	114	#define LSPBIT_OL 0x04
	115	#define LSPBIT_IST 0x03
	116
	117	/*
	118	* LSP bit masking macros
	119	* taken from tcpdumps
	120	* print-isoclns.c
	121	*/
	122
	123	#define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
	124	#define ISIS_MASK_LSP_IS_L1_BIT(x) ((x)&0x1)
	125	#define ISIS_MASK_LSP_IS_L2_BIT(x) ((x)&0x2)
	126	#define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
	127	#define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
	128	#define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
	129	#define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
	130	#define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
	131	#define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
	132
	133	#define LLC_LEN 3
	134
	135	/* we need to be aware of the fact we are using ISO sized
	136	* packets, using isomtu = mtu - LLC_LEN
	137	*/
	138	#define ISO_MTU(C) \
	139	(C->circ_type==CIRCUIT_T_BROADCAST) ? \
	140	(C->interface->mtu - LLC_LEN) : (C->interface->mtu)
	141
	142	#ifndef ETH_ALEN
	143	#define ETH_ALEN 6
	144	#endif
	145
f390d2c7	146	#endif /* ISIS_CONSTANTS_H */