[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 draft-ietf-isis-te-metric-extensions-11
 *
 *      Copyright (C) 2014 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 GNU Zebra; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, 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 yet supported in this version */

/* 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)

/*
 * Following section defines subTLV (tag, length, value) structures,
 * used for Traffic Engineering.
 */
struct subtlv_header
{
  u_char	type;		/* sub_TLV_XXX type (see above) */
  u_char	length;		/* Value portion only, in byte */
};

#define SUBTLV_HDR_SIZE        2  /* (sizeof (struct sub_tlv_header)) */

#define SUBTLV_SIZE(stlvh) 	(SUBTLV_HDR_SIZE + (stlvh)->length)

#define SUBTLV_HDR_TOP(lsph) 	(struct subtlv_header *)((char *)(lsph) + ISIS_LSP_HEADER_SIZE)

#define SUBTLV_HDR_NEXT(stlvh) 	(struct subtlv_header *)((char *)(stlvh) + SUBTLV_SIZE(stlvh))

#define SUBTLV_TYPE(stlvh)     stlvh.header.type
#define SUBTLV_LEN(stlvh)      stlvh.header.length
#define SUBTLV_VAL(stlvh)      stlvh.value
#define SUBTLV_DATA(stlvh)     stlvh + SUBTLV_HDR_SIZE

#define SUBTLV_DEF_SIZE		4

/* Link Sub-TLV: Resource Class/Color - RFC 5305 */
#define TE_SUBTLV_ADMIN_GRP	3
struct te_subtlv_admin_grp
{
  struct subtlv_header header;		/* Value length is 4 octets. */
  u_int32_t		value;		/* Admin. group membership. */
} __attribute__((__packed__));

/* Link Local/Remote Identifiers - RFC 5307 */
#define TE_SUBTLV_LLRI		4
#define TE_SUBTLV_LLRI_SIZE	8
struct te_subtlv_llri
{
  struct subtlv_header header;		/* Value length is 8 octets. */
  u_int32_t		local;		/* Link Local Identifier */
  u_int32_t		remote;	/* Link Remote Identifier */
} __attribute__((__packed__));

/* Link Sub-TLV: Local Interface IP Address - RFC 5305 */
#define TE_SUBTLV_LOCAL_IPADDR	6
struct te_subtlv_local_ipaddr
{
  struct subtlv_header	header;		/* Value length is 4 x N octets. */
  struct in_addr	value;		/* Local IP address(es). */
} __attribute__((__packed__));

/* Link Sub-TLV: Neighbor Interface IP Address - RFC 5305 */
#define TE_SUBTLV_RMT_IPADDR	8
struct te_subtlv_rmt_ipaddr
{
  struct subtlv_header	header;		/* Value length is 4 x N octets. */
  struct in_addr	value;		/* Neighbor's IP address(es). */
} __attribute__((__packed__));

/* Link Sub-TLV: Maximum Bandwidth - RFC 5305 */
#define TE_SUBTLV_MAX_BW	9
struct te_subtlv_max_bw
{
  struct subtlv_header	header;		/* Value length is 4 octets. */
  float			value;		/* bytes/sec */
} __attribute__((__packed__));

/* Link Sub-TLV: Maximum Reservable Bandwidth - RFC 5305 */
#define TE_SUBTLV_MAX_RSV_BW	10
struct te_subtlv_max_rsv_bw
{
  struct subtlv_header	header;		/* Value length is 4 octets. */
  float			value;		/* bytes/sec */
} __attribute__((__packed__));

/* Link Sub-TLV: Unreserved Bandwidth - RFC 5305 */
#define TE_SUBTLV_UNRSV_BW	11
#define TE_SUBTLV_UNRSV_SIZE	32
struct te_subtlv_unrsv_bw
{
  struct subtlv_header	header;		/* Value length is 32 octets. */
  float			value[8];	/* One for each priority level. */
} __attribute__((__packed__));

/* Link Sub-TLV: Traffic Engineering Metric - RFC 5305 */
#define TE_SUBTLV_TE_METRIC	18
#define TE_SUBTLV_TE_METRIC_SIZE    3
struct te_subtlv_te_metric
{
  struct subtlv_header	header;		/* Value length is 4 octets. */
  u_char		value[3];	/* Link metric for TE purpose. */
} __attribute__((__packed__));

/* Remote AS Number sub-TLV - RFC5316 */
#define TE_SUBTLV_RAS		24
struct te_subtlv_ras
{
  struct subtlv_header header;		/* Value length is 4 octets. */
  u_int32_t	       value;        	/* Remote AS number */
} __attribute__((__packed__));

/* IPv4 Remote ASBR ID Sub-TLV - RFC5316 */
#define TE_SUBTLV_RIP		25
struct te_subtlv_rip
{
  struct subtlv_header header;		/* Value length is 4 octets. */
  struct in_addr       value;		/* Remote ASBR IP address */
} __attribute__((__packed__));


/* draft-ietf-isis-te-metric-extensions-11.txt */
/* Link Sub-TLV: Average Link Delay */
#define TE_SUBTLV_AV_DELAY	33
struct te_subtlv_av_delay
{
  struct subtlv_header header;  /* Value length is 4 bytes. */
  u_int32_t            value;   /* Average delay in micro-seconds only 24 bits => 0 ... 16777215
                                   with Anomalous Bit (A) as Upper most bit */
} __attribute__((__packed__));

/* Link Sub-TLV: Low/High Link Delay */
#define TE_SUBTLV_MM_DELAY      34
#define TE_SUBTLV_MM_DELAY_SIZE    8
struct te_subtlv_mm_delay
{
  struct subtlv_header header;  /* Value length is 8 bytes. */
  u_int32_t            low;     /* low delay in micro-seconds only 24 bits => 0 ... 16777215
                                   with Anomalous Bit (A) as Upper most bit */
  u_int32_t            high;    /* high delay in micro-seconds only 24 bits => 0 ... 16777215 */
} __attribute__((__packed__));

/* Link Sub-TLV: Link Delay Variation i.e. Jitter */
#define TE_SUBTLV_DELAY_VAR     35
struct te_subtlv_delay_var
{
  struct subtlv_header header;  /* Value length is 4 bytes. */
  u_int32_t            value;   /* interval in micro-seconds only 24 bits => 0 ... 16777215 */
} __attribute__((__packed__));

/* Link Sub-TLV: Routine Unidirectional Link Packet Loss */
#define TE_SUBTLV_PKT_LOSS	36
struct te_subtlv_pkt_loss
{
  struct subtlv_header header;  /* Value length is 4 bytes. */
  u_int32_t            value;   /* in percentage of total traffic only 24 bits (2^24 - 2)
                                   with Anomalous Bit (A) as Upper most bit */
} __attribute__((__packed__));

/* Link Sub-TLV: Unidirectional Residual Bandwidth */ /* Optional */
#define TE_SUBTLV_RES_BW	37
struct te_subtlv_res_bw
{
  struct subtlv_header header;  /* Value length is 4 bytes. */
  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
} __attribute__((__packed__));

/* Link Sub-TLV: Unidirectional Available Bandwidth */ /* Optional */
#define TE_SUBTLV_AVA_BW	38
struct te_subtlv_ava_bw
{
  struct subtlv_header header;  /* Value length is 4 octets. */
  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
} __attribute__((__packed__));

/* Link Sub-TLV: Unidirectional Utilized Bandwidth */ /* Optional */
#define TE_SUBTLV_USE_BW        39
struct te_subtlv_use_bw
{
  struct subtlv_header header;  /* Value length is 4 octets. */
  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
} __attribute__((__packed__));

#define TE_SUBTLV_MAX		40      /* Last SUBTLV + 1 */

/* 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_MPLS_TE(m)    (m.status == enable)
#define IS_CIRCUIT_TE(c) (c->status == enable)

/* Following structure are internal use only. */
struct isis_mpls_te
{
  /* Status of MPLS-TE: enable or disable */
  status_t status;

  /* L1, L1-L2, L2-Only */
  u_int8_t level;

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

  /* Circuit list on which TE are enable */
  struct list *cir_list;

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

extern struct isis_mpls_te isisMplsTE;

struct mpls_te_circuit
{

  /* Status of MPLS-TE on this interface */
  status_t status;

  /* Type of MPLS-TE circuit: STD_TE(RFC5305), INTER_AS(RFC5316), INTER_AS_EMU(RFC5316 emulated) */
  u_int8_t type;

  /* Total size of sub_tlvs */
  u_char length;

  /* Store subTLV in network byte order. */
  /* RFC5305 */
  struct te_subtlv_admin_grp admin_grp;
  /* RFC5307 */
  struct te_subtlv_llri llri;
  /* RFC5305 */
  struct te_subtlv_local_ipaddr local_ipaddr;
  struct te_subtlv_rmt_ipaddr rmt_ipaddr;
  struct te_subtlv_max_bw max_bw;
  struct te_subtlv_max_rsv_bw max_rsv_bw;
  struct te_subtlv_unrsv_bw unrsv_bw;
  struct te_subtlv_te_metric te_metric;
  /* RFC5316 */
  struct te_subtlv_ras ras;
  struct te_subtlv_rip rip;
  /* draft-ietf-isis-te-metric-extension */
  struct te_subtlv_av_delay av_delay;
  struct te_subtlv_mm_delay mm_delay;
  struct te_subtlv_delay_var delay_var;
  struct te_subtlv_pkt_loss pkt_loss;
  struct te_subtlv_res_bw res_bw;
  struct te_subtlv_ava_bw ava_bw;
  struct te_subtlv_use_bw use_bw;
};

/* Prototypes. */
void isis_mpls_te_init (void);
struct mpls_te_circuit *mpls_te_circuit_new(void);
void mpls_te_print_detail(struct vty *, struct te_is_neigh *);
void set_circuitparams_local_ipaddr (struct mpls_te_circuit *, struct in_addr);
void set_circuitparams_rmt_ipaddr (struct mpls_te_circuit *, struct in_addr);
u_char subtlvs_len (struct mpls_te_circuit *);
u_char add_te_subtlvs(u_char *, struct mpls_te_circuit *);
u_char build_te_subtlvs(u_char *, struct isis_circuit *);
void isis_link_params_update(struct isis_circuit *, struct interface *);
void isis_mpls_te_update(struct interface *);
void isis_mpls_te_config_write_router (struct vty *);

#endif /* _ZEBRA_ISIS_MPLS_TE_H */
Commit	Line	Data
f8c06e2c OD	1	/*
	2	* IS-IS Rout(e)ing protocol - isis_te.c
	3	*
	4	* This is an implementation of RFC5305, RFC 5307 and draft-ietf-isis-te-metric-extensions-11
	5	*
	6	* Copyright (C) 2014 Orange Labs
	7	* http://www.orange.com
	8	*
	9	* This file is part of GNU Zebra.
	10	*
	11	* GNU Zebra is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2, or (at your option) any
	14	* later version.
	15	*
	16	* GNU Zebra is distributed in the hope that it will be useful, but
	17	* WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with GNU Zebra; see the file COPYING. If not, write to the Free
	23	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	24	* 02111-1307, USA.
	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	*
	54	*/
	55
	56	/* NOTE: RFC5316 is not yet supported in this version */
	57
	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	/*
77	* Following section defines subTLV (tag, length, value) structures,
78	* used for Traffic Engineering.
79	*/
80	struct subtlv_header
81	{
82	u_char type; /* sub_TLV_XXX type (see above) */
83	u_char length; /* Value portion only, in byte */
84	};
85
86	#define SUBTLV_HDR_SIZE 2 /* (sizeof (struct sub_tlv_header)) */
87
88	#define SUBTLV_SIZE(stlvh) (SUBTLV_HDR_SIZE + (stlvh)->length)
89
90	#define SUBTLV_HDR_TOP(lsph) (struct subtlv_header )((char )(lsph) + ISIS_LSP_HEADER_SIZE)
91
92	#define SUBTLV_HDR_NEXT(stlvh) (struct subtlv_header )((char )(stlvh) + SUBTLV_SIZE(stlvh))
93
94	#define SUBTLV_TYPE(stlvh) stlvh.header.type
95	#define SUBTLV_LEN(stlvh) stlvh.header.length
96	#define SUBTLV_VAL(stlvh) stlvh.value
97	#define SUBTLV_DATA(stlvh) stlvh + SUBTLV_HDR_SIZE
98
99	#define SUBTLV_DEF_SIZE 4
100
101	/* Link Sub-TLV: Resource Class/Color - RFC 5305 */
102	#define TE_SUBTLV_ADMIN_GRP 3
103	struct te_subtlv_admin_grp
104	{
105	struct subtlv_header header; /* Value length is 4 octets. */
106	u_int32_t value; /* Admin. group membership. */
107	} __attribute__((__packed__));
108
109	/* Link Local/Remote Identifiers - RFC 5307 */
110	#define TE_SUBTLV_LLRI 4
111	#define TE_SUBTLV_LLRI_SIZE 8
112	struct te_subtlv_llri
113	{
114	struct subtlv_header header; /* Value length is 8 octets. */
115	u_int32_t local; /* Link Local Identifier */
116	u_int32_t remote; /* Link Remote Identifier */
117	} __attribute__((__packed__));
118
119	/* Link Sub-TLV: Local Interface IP Address - RFC 5305 */
120	#define TE_SUBTLV_LOCAL_IPADDR 6
121	struct te_subtlv_local_ipaddr
122	{
123	struct subtlv_header header; /* Value length is 4 x N octets. */
124	struct in_addr value; /* Local IP address(es). */
125	} __attribute__((__packed__));
126
127	/* Link Sub-TLV: Neighbor Interface IP Address - RFC 5305 */
128	#define TE_SUBTLV_RMT_IPADDR 8
129	struct te_subtlv_rmt_ipaddr
130	{
131	struct subtlv_header header; /* Value length is 4 x N octets. */
132	struct in_addr value; /* Neighbor's IP address(es). */
133	} __attribute__((__packed__));
134
135	/* Link Sub-TLV: Maximum Bandwidth - RFC 5305 */
136	#define TE_SUBTLV_MAX_BW 9
137	struct te_subtlv_max_bw
138	{
139	struct subtlv_header header; /* Value length is 4 octets. */
140	float value; /* bytes/sec */
141	} __attribute__((__packed__));
142
143	/* Link Sub-TLV: Maximum Reservable Bandwidth - RFC 5305 */
144	#define TE_SUBTLV_MAX_RSV_BW 10
145	struct te_subtlv_max_rsv_bw
146	{
147	struct subtlv_header header; /* Value length is 4 octets. */
148	float value; /* bytes/sec */
149	} __attribute__((__packed__));
150
151	/* Link Sub-TLV: Unreserved Bandwidth - RFC 5305 */
152	#define TE_SUBTLV_UNRSV_BW 11
153	#define TE_SUBTLV_UNRSV_SIZE 32
154	struct te_subtlv_unrsv_bw
155	{
156	struct subtlv_header header; /* Value length is 32 octets. */
157	float value[8]; /* One for each priority level. */
158	} __attribute__((__packed__));
159
160	/* Link Sub-TLV: Traffic Engineering Metric - RFC 5305 */
161	#define TE_SUBTLV_TE_METRIC 18
162	#define TE_SUBTLV_TE_METRIC_SIZE 3
163	struct te_subtlv_te_metric
164	{
165	struct subtlv_header header; /* Value length is 4 octets. */
166	u_char value[3]; /* Link metric for TE purpose. */
167	} __attribute__((__packed__));
168
169	/* Remote AS Number sub-TLV - RFC5316 */
170	#define TE_SUBTLV_RAS 24
171	struct te_subtlv_ras
172	{
173	struct subtlv_header header; /* Value length is 4 octets. */
174	u_int32_t value; /* Remote AS number */
175	} __attribute__((__packed__));
176
177	/* IPv4 Remote ASBR ID Sub-TLV - RFC5316 */
178	#define TE_SUBTLV_RIP 25
179	struct te_subtlv_rip
180	{
181	struct subtlv_header header; /* Value length is 4 octets. */
182	struct in_addr value; /* Remote ASBR IP address */
183	} __attribute__((__packed__));
184
185
186	/* draft-ietf-isis-te-metric-extensions-11.txt */
187	/* Link Sub-TLV: Average Link Delay */
188	#define TE_SUBTLV_AV_DELAY 33
189	struct te_subtlv_av_delay
190	{
191	struct subtlv_header header; /* Value length is 4 bytes. */
192	u_int32_t value; /* Average delay in micro-seconds only 24 bits => 0 ... 16777215
193	with Anomalous Bit (A) as Upper most bit */
194	} __attribute__((__packed__));
195
196	/* Link Sub-TLV: Low/High Link Delay */
197	#define TE_SUBTLV_MM_DELAY 34
198	#define TE_SUBTLV_MM_DELAY_SIZE 8
199	struct te_subtlv_mm_delay
200	{
201	struct subtlv_header header; /* Value length is 8 bytes. */
202	u_int32_t low; /* low delay in micro-seconds only 24 bits => 0 ... 16777215
203	with Anomalous Bit (A) as Upper most bit */
204	u_int32_t high; /* high delay in micro-seconds only 24 bits => 0 ... 16777215 */
205	} __attribute__((__packed__));
206
207	/* Link Sub-TLV: Link Delay Variation i.e. Jitter */
208	#define TE_SUBTLV_DELAY_VAR 35
209	struct te_subtlv_delay_var
210	{
211	struct subtlv_header header; /* Value length is 4 bytes. */
212	u_int32_t value; /* interval in micro-seconds only 24 bits => 0 ... 16777215 */
213	} __attribute__((__packed__));
214
215	/* Link Sub-TLV: Routine Unidirectional Link Packet Loss */
216	#define TE_SUBTLV_PKT_LOSS 36
217	struct te_subtlv_pkt_loss
218	{
219	struct subtlv_header header; /* Value length is 4 bytes. */
220	u_int32_t value; /* in percentage of total traffic only 24 bits (2^24 - 2)
221	with Anomalous Bit (A) as Upper most bit */
222	} __attribute__((__packed__));
223
224	/* Link Sub-TLV: Unidirectional Residual Bandwidth / / Optional */
225	#define TE_SUBTLV_RES_BW 37
226	struct te_subtlv_res_bw
227	{
228	struct subtlv_header header; /* Value length is 4 bytes. */
229	float value; /* bandwidth in IEEE floating point format with units in bytes per second */
230	} __attribute__((__packed__));
231
232	/* Link Sub-TLV: Unidirectional Available Bandwidth / / Optional */
233	#define TE_SUBTLV_AVA_BW 38
234	struct te_subtlv_ava_bw
235	{
236	struct subtlv_header header; /* Value length is 4 octets. */
237	float value; /* bandwidth in IEEE floating point format with units in bytes per second */
238	} __attribute__((__packed__));
239
240	/* Link Sub-TLV: Unidirectional Utilized Bandwidth / / Optional */
241	#define TE_SUBTLV_USE_BW 39
242	struct te_subtlv_use_bw
243	{
244	struct subtlv_header header; /* Value length is 4 octets. */
245	float value; /* bandwidth in IEEE floating point format with units in bytes per second */
246	} __attribute__((__packed__));
247
248	#define TE_SUBTLV_MAX 40 /* Last SUBTLV + 1 */
249
250	/* Following declaration concerns the MPLS-TE and LINk-TE management */
251	typedef enum _status_t { disable, enable, learn } status_t;
252
253	/* Mode for Inter-AS LSP / / TODO: Check how if LSP is flooded in RFC5316 */
254	typedef enum _interas_mode_t { off, region, as, emulate } interas_mode_t;
255
256	#define IS_MPLS_TE(m) (m.status == enable)
257	#define IS_CIRCUIT_TE(c) (c->status == enable)
258
259	/* Following structure are internal use only. */
260	struct isis_mpls_te
261	{
262	/* Status of MPLS-TE: enable or disable */
263	status_t status;
264
265	/* L1, L1-L2, L2-Only */
266	u_int8_t level;
267
268	/* RFC5316 */
269	interas_mode_t inter_as;
270	struct in_addr interas_areaid;
271
272	/* Circuit list on which TE are enable */
273	struct list *cir_list;
274
275	/* MPLS_TE router ID */
276	struct in_addr router_id;
277	};
278
279	extern struct isis_mpls_te isisMplsTE;
280
281	struct mpls_te_circuit
282	{
283
284	/* Status of MPLS-TE on this interface */
285	status_t status;
286
287	/* Type of MPLS-TE circuit: STD_TE(RFC5305), INTER_AS(RFC5316), INTER_AS_EMU(RFC5316 emulated) */
288	u_int8_t type;
289
290	/* Total size of sub_tlvs */
291	u_char length;
292
293	/* Store subTLV in network byte order. */
294	/* RFC5305 */
295	struct te_subtlv_admin_grp admin_grp;
296	/* RFC5307 */
297	struct te_subtlv_llri llri;
298	/* RFC5305 */
299	struct te_subtlv_local_ipaddr local_ipaddr;
300	struct te_subtlv_rmt_ipaddr rmt_ipaddr;
301	struct te_subtlv_max_bw max_bw;
302	struct te_subtlv_max_rsv_bw max_rsv_bw;
303	struct te_subtlv_unrsv_bw unrsv_bw;
304	struct te_subtlv_te_metric te_metric;
305	/* RFC5316 */
306	struct te_subtlv_ras ras;
307	struct te_subtlv_rip rip;
308	/* draft-ietf-isis-te-metric-extension */
309	struct te_subtlv_av_delay av_delay;
310	struct te_subtlv_mm_delay mm_delay;
311	struct te_subtlv_delay_var delay_var;
312	struct te_subtlv_pkt_loss pkt_loss;
313	struct te_subtlv_res_bw res_bw;
314	struct te_subtlv_ava_bw ava_bw;
315	struct te_subtlv_use_bw use_bw;
316	};
317
318	/* Prototypes. */
319	void isis_mpls_te_init (void);
320	struct mpls_te_circuit *mpls_te_circuit_new(void);
321	void mpls_te_print_detail(struct vty , struct te_is_neigh );
322	void set_circuitparams_local_ipaddr (struct mpls_te_circuit *, struct in_addr);
323	void set_circuitparams_rmt_ipaddr (struct mpls_te_circuit *, struct in_addr);
324	u_char subtlvs_len (struct mpls_te_circuit *);
325	u_char add_te_subtlvs(u_char , struct mpls_te_circuit );
326	u_char build_te_subtlvs(u_char , struct isis_circuit );
327	void isis_link_params_update(struct isis_circuit , struct interface );
328	void isis_mpls_te_update(struct interface *);
329	void isis_mpls_te_config_write_router (struct vty *);
330
331	#endif /* _ZEBRA_ISIS_MPLS_TE_H */