[mirror_frr.git] / isisd / isis_te.h

/*
 * IS-IS Rout(e)ing protocol - isis_te.c
 *
 * This is an implementation of RFC5305, RFC 5307 and RFC 7810
 *
 * Author: Olivier Dugeon <olivier.dugeon@orange.com>
 *
 * Copyright (C) 2014 - 2019 Orange Labs http://www.orange.com
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra 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, or (at your option) any
 * later version.
 *
 * GNU Zebra 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; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef _ZEBRA_ISIS_MPLS_TE_H
#define _ZEBRA_ISIS_MPLS_TE_H

/*
 * Traffic Engineering information are transport through LSP:
 *  - Extended IS Reachability          TLV = 22
 *  - Traffic Engineering Router ID     TLV = 134
 *  - Extended IP Reachability          TLV = 135
 *  - Inter-AS Reachability Information TLV = 141
 *
 *  and support following sub-TLV:
 *
 * Name                           Value   Status
 * _________________________________________________
 * Administartive group (color)       3   RFC5305
 * Link Local/Remote Identifiers      4   RFC5307
 * IPv4 interface address             6   RFC5305
 * IPv4 neighbor address              8   RFC5305
 * Maximum link bandwidth             9   RFC5305
 * Reservable link bandwidth         10   RFC5305
 * Unreserved bandwidth              11   RFC5305
 * TE Default metric                 18   RFC5305
 * Link Protection Type              20   RFC5307
 * Interface Switching Capability    21   RFC5307
 * Remote AS number                  24   RFC5316
 * IPv4 Remote ASBR identifier       25   RFC5316
 *
 * NOTE: RFC5316 is not fully supported in this version
 * only subTLVs decoding is provided
 */

/* Following define the type of TE link regarding the various RFC */
#define STD_TE			0x01
#define GMPLS			0x02
#define INTER_AS 		0x04
#define FLOOD_L1		0x10
#define FLOOD_L2		0x20
#define FLOOD_AS                0x40
#define EMULATED		0x80

#define IS_STD_TE(x) 		(x & STD_TE)
#define IS_INTER_AS(x) 		(x & INTER_AS)
#define IS_EMULATED(x)		(x & EMULATED)
#define IS_FLOOD_L1(x)		(x & FLOOD_L1)
#define IS_FLOOD_L2(x)		(x & FLOOD_L2)
#define IS_FLOOD_AS(x)          (x & FLOOD_AS)
#define IS_INTER_AS_EMU(x) 	(x & INTER_AS & EMULATED)
#define IS_INTER_AS_AS(x)	(x & INTER_AS & FLOOD_AS)

/*
 * Note (since release 7.2), subTLVs definition, serialization
 * and de-serialization have mode to isis_tlvs.[c,h]
 */

/* Following declaration concerns the MPLS-TE and LINk-TE management */
typedef enum _status_t { disable, enable, learn } status_t;

/* Mode for Inter-AS LSP */ /* TODO: Check how if LSP is flooded in RFC5316 */
typedef enum _interas_mode_t { off, region, as, emulate } interas_mode_t;

#define IS_EXT_TE(e)    (e && e->status != 0			\
			   && e->status != EXT_ADJ_SID		\
			   && e->status != EXT_LAN_ADJ_SID)
#define IS_MPLS_TE(a)	(a && a->status == enable)

/* Per area MPLS-TE parameters */
struct mpls_te_area {
	/* Status of MPLS-TE: enable or disable */
	status_t status;

	/* L1, L1-L2, L2-Only */
	uint8_t level;

	/* RFC5316 */
	interas_mode_t inter_as;
	struct in_addr interas_areaid;

	/* MPLS_TE router ID */
	struct in_addr router_id;
};

/* Prototypes. */
void isis_mpls_te_init(void);
void isis_link_params_update(struct isis_circuit *, struct interface *);
int isis_mpls_te_update(struct interface *);

#endif /* _ZEBRA_ISIS_MPLS_TE_H */
Commit	Line	Data
f8c06e2c OD	1	/*
	2	* IS-IS Rout(e)ing protocol - isis_te.c
	3	*
68558b13	4	* This is an implementation of RFC5305, RFC 5307 and RFC 7810
f8c06e2c	5	*
1b3f47d0 OD	6	* Author: Olivier Dugeon <olivier.dugeon@orange.com>
	7	*
	8	* Copyright (C) 2014 - 2019 Orange Labs http://www.orange.com
f8c06e2c OD	9	*
	10	* This file is part of GNU Zebra.
	11	*
	12	* GNU Zebra is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the
	14	* Free Software Foundation; either version 2, or (at your option) any
	15	* later version.
	16	*
	17	* GNU Zebra is distributed in the hope that it will be useful, but
	18	* WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	20	* General Public License for more details.
	21	*
896014f4 DL	22	* You should have received a copy of the GNU General Public License along
	23	* with this program; see the file COPYING; if not, write to the Free Software
	24	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
f8c06e2c OD	25	*/
	26
	27	#ifndef _ZEBRA_ISIS_MPLS_TE_H
	28	#define _ZEBRA_ISIS_MPLS_TE_H
	29
	30	/*
	31	* Traffic Engineering information are transport through LSP:
	32	* - Extended IS Reachability TLV = 22
	33	* - Traffic Engineering Router ID TLV = 134
	34	* - Extended IP Reachability TLV = 135
	35	* - Inter-AS Reachability Information TLV = 141
	36	*
	37	* and support following sub-TLV:
	38	*
	39	* Name Value Status
	40	* _________________________________________________
	41	* Administartive group (color) 3 RFC5305
	42	* Link Local/Remote Identifiers 4 RFC5307
	43	* IPv4 interface address 6 RFC5305
	44	* IPv4 neighbor address 8 RFC5305
	45	* Maximum link bandwidth 9 RFC5305
	46	* Reservable link bandwidth 10 RFC5305
	47	* Unreserved bandwidth 11 RFC5305
	48	* TE Default metric 18 RFC5305
	49	* Link Protection Type 20 RFC5307
	50	* Interface Switching Capability 21 RFC5307
	51	* Remote AS number 24 RFC5316
	52	* IPv4 Remote ASBR identifier 25 RFC5316
	53	*
1b3f47d0 OD	54	* NOTE: RFC5316 is not fully supported in this version
1b3f47d0 OD	55	* only subTLVs decoding is provided
f8c06e2c OD	56	*/
f8c06e2c OD	57
f8c06e2c OD	58	/* Following define the type of TE link regarding the various RFC */
	59	#define STD_TE 0x01
	60	#define GMPLS 0x02
	61	#define INTER_AS 0x04
	62	#define FLOOD_L1 0x10
	63	#define FLOOD_L2 0x20
	64	#define FLOOD_AS 0x40
	65	#define EMULATED 0x80
	66
	67	#define IS_STD_TE(x) (x & STD_TE)
	68	#define IS_INTER_AS(x) (x & INTER_AS)
	69	#define IS_EMULATED(x) (x & EMULATED)
	70	#define IS_FLOOD_L1(x) (x & FLOOD_L1)
	71	#define IS_FLOOD_L2(x) (x & FLOOD_L2)
	72	#define IS_FLOOD_AS(x) (x & FLOOD_AS)
	73	#define IS_INTER_AS_EMU(x) (x & INTER_AS & EMULATED)
	74	#define IS_INTER_AS_AS(x) (x & INTER_AS & FLOOD_AS)
	75
	76	/*
1b3f47d0 OD	77	* Note (since release 7.2), subTLVs definition, serialization
1b3f47d0 OD	78	* and de-serialization have mode to isis_tlvs.[c,h]
f8c06e2c	79	*/
f8c06e2c OD	80
	81	/* Following declaration concerns the MPLS-TE and LINk-TE management */
	82	typedef enum _status_t { disable, enable, learn } status_t;
	83
	84	/* Mode for Inter-AS LSP / / TODO: Check how if LSP is flooded in RFC5316 */
	85	typedef enum _interas_mode_t { off, region, as, emulate } interas_mode_t;
	86
1b3f47d0 OD	87	#define IS_EXT_TE(e) (e && e->status != 0 \
	88	&& e->status != EXT_ADJ_SID \
	89	&& e->status != EXT_LAN_ADJ_SID)
	90	#define IS_MPLS_TE(a) (a && a->status == enable)
f8c06e2c	91
2e2a8b91 OD	92	/* Per area MPLS-TE parameters */
2e2a8b91 OD	93	struct mpls_te_area {
d62a17ae	94	/* Status of MPLS-TE: enable or disable */
d62a17ae	95	status_t status;
f8c06e2c	96
d62a17ae	97	/* L1, L1-L2, L2-Only */
d7c0a89a	98	uint8_t level;
f8c06e2c	99
d62a17ae	100	/* RFC5316 */
	101	interas_mode_t inter_as;
	102	struct in_addr interas_areaid;
f8c06e2c	103
d62a17ae	104	/* MPLS_TE router ID */
d62a17ae	105	struct in_addr router_id;
f8c06e2c OD	106	};
f8c06e2c OD	107
f8c06e2c	108	/* Prototypes. */
d62a17ae	109	void isis_mpls_te_init(void);
f8c06e2c	110	void isis_link_params_update(struct isis_circuit , struct interface );
1b3f47d0	111	int isis_mpls_te_update(struct interface *);
f8c06e2c OD	112
f8c06e2c OD	113	#endif /* _ZEBRA_ISIS_MPLS_TE_H */