[mirror_frr.git] / isisd / isis_tlv.h

/*
 * IS-IS Rout(e)ing protocol - isis_tlv.h
 *                             IS-IS TLV related routines
 *
 * 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 _ZEBRA_ISIS_TLV_H
#define _ZEBRA_ISIS_TLV_H

/*
 * The list of TLVs we (should) support.
 * ____________________________________________________________________________
 * Name                   Value  IIH LSP SNP Status
 *                               LAN
 * ____________________________________________________________________________
 *
 * Area Addresses             1   y   y   n  ISO10589
 * IIS Neighbors              2   n   y   n  ISO10589
 * ES Neighbors               3   n   y   n  ISO10589
 * IIS Neighbors              6   y   n   n  ISO10589
 * Padding                    8   y   n   n  ISO10589
 * LSP Entries                9   n   n   y  ISO10589
 * Authentication            10   y   y   y  ISO10589, RFC3567
 * Checksum                  12   y   n   y  RFC3358
 * TE IS Reachability        22   n   y   n  RFC5305
 * IS Alias                  24   n   y   n  RFC3786
 * IP Int. Reachability     128   n   y   n  RFC1195
 * Protocols Supported      129   y   y   n  RFC1195
 * IP Ext. Reachability     130   n   y   n  RFC1195
 * IDRPI                    131   n   y   y  RFC1195
 * IP Interface Address     132   y   y   n  RFC1195
 * TE Router ID             134   n   y   n  RFC5305
 * Extended IP Reachability 135   n   y   n  RFC5305
 * Dynamic Hostname         137   n   y   n  RFC2763
 * Shared Risk Link Group   138   n   y   y  RFC5307
 * Restart TLV              211   y   n   n  RFC3847
 * MT IS Reachability       222   n   y   n  RFC5120
 * MT Supported             229   y   y   n  RFC5120
 * IPv6 Interface Address   232   y   y   n  RFC5308
 * MT IP Reachability       235   n   y   n  RFC5120
 * IPv6 IP Reachability     236   n   y   n  RFC5308
 * MT IPv6 IP Reachability  237   n   y   n  RFC5120
 * P2P Adjacency State      240   y   n   n  RFC3373
 * IIH Sequence Number      241   y   n   n  draft-shen-isis-iih-sequence
 * Router Capability        242   -   -   -  draft-ietf-isis-caps
 *
 *
 * IS Reachability sub-TLVs we (should) support.
 * ____________________________________________________________________________
 * 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
 *
 *
 * IP Reachability sub-TLVs we (should) support.
 * ____________________________________________________________________________
 * Name                           Value   Status
 * ____________________________________________________________________________
 * 32bit administrative tag           1   RFC5130
 * 64bit administrative tag           2   RFC5130
 * Management prefix color          117   RFC5120
 */

#define AREA_ADDRESSES            1
#define IS_NEIGHBOURS             2
#define ES_NEIGHBOURS             3
#define LAN_NEIGHBOURS            6
#define PADDING                   8
#define LSP_ENTRIES               9
#define AUTH_INFO                 10
#define CHECKSUM                  12
#define TE_IS_NEIGHBOURS          22
#define IS_ALIAS                  24
#define IPV4_INT_REACHABILITY     128
#define PROTOCOLS_SUPPORTED       129
#define IPV4_EXT_REACHABILITY     130
#define IDRP_INFO                 131
#define IPV4_ADDR                 132
#define TE_ROUTER_ID              134
#define TE_IPV4_REACHABILITY      135
#define DYNAMIC_HOSTNAME          137
#define GRACEFUL_RESTART          211
#define IPV6_ADDR                 232
#define IPV6_REACHABILITY         236
#define WAY3_HELLO                240

#define AUTH_INFO_HDRLEN          3

#define IS_NEIGHBOURS_LEN (ISIS_SYS_ID_LEN + 5)
#define LAN_NEIGHBOURS_LEN 6
#define LSP_ENTRIES_LEN (10 + ISIS_SYS_ID_LEN)	/* FIXME: should be entry */
#define IPV4_REACH_LEN 12
#define IPV6_REACH_LEN 22
#define TE_IPV4_REACH_LEN 9

/* struct for neighbor */
struct is_neigh
{
  struct metric metrics;
  u_char neigh_id[ISIS_SYS_ID_LEN + 1];
};

/* struct for te is neighbor */
struct te_is_neigh
{
  u_char neigh_id[ISIS_SYS_ID_LEN + 1];
  u_char te_metric[3];
  u_char sub_tlvs_length;
};

/* Decode and encode three-octet metric into host byte order integer */
#define GET_TE_METRIC(t) \
  (((unsigned)(t)->te_metric[0]<<16) | ((t)->te_metric[1]<<8) | \
   (t)->te_metric[2])
#define SET_TE_METRIC(t, m) \
  (((t)->te_metric[0] = (m) >> 16), \
   ((t)->te_metric[1] = (m) >> 8), \
   ((t)->te_metric[2] = (m)))

/* struct for es neighbors */
struct es_neigh
{
  struct metric metrics;
  /* approximate position of first, we use the
   * length ((uchar*)metric-1) to know all     */
  u_char first_es_neigh[ISIS_SYS_ID_LEN];

};

struct partition_desig_level2_is
{
  struct list *isis_system_ids;
};

/* struct for lan neighbors */
struct lan_neigh
{
  u_char LAN_addr[6];
};

#ifdef __SUNPRO_C
#pragma pack(1)
#endif

/* struct for LSP entry */
struct lsp_entry
{
  u_int16_t rem_lifetime;
  u_char lsp_id[ISIS_SYS_ID_LEN + 2];
  u_int32_t seq_num;
  u_int16_t checksum;
} __attribute__ ((packed));

#ifdef __SUNPRO_C
#pragma pack()
#endif

/* struct for checksum */
struct checksum
{
  u_int16_t checksum;
};

/* ipv4 reachability */
struct ipv4_reachability
{
  struct metric metrics;
  struct in_addr prefix;
  struct in_addr mask;
};

/* te router id */
struct te_router_id
{
  struct in_addr id;
};

/* te ipv4 reachability */
struct te_ipv4_reachability
{
  u_int32_t te_metric;
  u_char control;
  u_char prefix_start;		/* since this is variable length by nature it only */
};				/* points to an approximate location */


struct idrp_info
{
  u_char len;
  u_char *value;
};

#ifdef HAVE_IPV6
struct ipv6_reachability
{
  u_int32_t metric;
  u_char control_info;
  u_char prefix_len;
  u_char prefix[16];
};

/* bits in control_info */
#define CTRL_INFO_DIRECTION    0x80
#define DIRECTION_UP           0
#define DIRECTION_DOWN         1
#define CTRL_INFO_DISTRIBUTION 0x40
#define DISTRIBUTION_INTERNAL  0
#define DISTRIBUTION_EXTERNAL  1
#define CTRL_INFO_SUBTLVS      0x20
#endif /* HAVE_IPV6 */

/*
 * Pointer to each tlv type, filled by parse_tlvs()
 */
struct tlvs
{
  struct checksum *checksum;
  struct hostname *hostname;
  struct nlpids *nlpids;
  struct te_router_id *router_id;
  struct list *area_addrs;
  struct list *is_neighs;
  struct list *te_is_neighs;
  struct list *es_neighs;
  struct list *lsp_entries;
  struct list *prefix_neighs;
  struct list *lan_neighs;
  struct list *ipv4_addrs;
  struct list *ipv4_int_reachs;
  struct list *ipv4_ext_reachs;
  struct list *te_ipv4_reachs;
#ifdef HAVE_IPV6
  struct list *ipv6_addrs;
  struct list *ipv6_reachs;
#endif
  struct isis_passwd auth_info;
};

/*
 * Own definitions - used to bitmask found and expected
 */

#define TLVFLAG_AREA_ADDRS                (1<<0)
#define TLVFLAG_IS_NEIGHS                 (1<<1)
#define TLVFLAG_ES_NEIGHS                 (1<<2)
#define TLVFLAG_PARTITION_DESIG_LEVEL2_IS (1<<3)
#define TLVFLAG_PREFIX_NEIGHS             (1<<4)
#define TLVFLAG_LAN_NEIGHS                (1<<5)
#define TLVFLAG_LSP_ENTRIES               (1<<6)
#define TLVFLAG_PADDING                   (1<<7)
#define TLVFLAG_AUTH_INFO                 (1<<8)
#define TLVFLAG_IPV4_INT_REACHABILITY     (1<<9)
#define TLVFLAG_NLPID                     (1<<10)
#define TLVFLAG_IPV4_EXT_REACHABILITY     (1<<11)
#define TLVFLAG_IPV4_ADDR                 (1<<12)
#define TLVFLAG_DYN_HOSTNAME              (1<<13)
#define TLVFLAG_IPV6_ADDR                 (1<<14)
#define TLVFLAG_IPV6_REACHABILITY         (1<<15)
#define TLVFLAG_TE_IS_NEIGHS              (1<<16)
#define TLVFLAG_TE_IPV4_REACHABILITY      (1<<17)
#define TLVFLAG_3WAY_HELLO                (1<<18)
#define TLVFLAG_TE_ROUTER_ID              (1<<19)
#define TLVFLAG_CHECKSUM                  (1<<20)
#define TLVFLAG_GRACEFUL_RESTART          (1<<21)

void init_tlvs (struct tlvs *tlvs, uint32_t expected);
void free_tlvs (struct tlvs *tlvs);
int parse_tlvs (char *areatag, u_char * stream, int size,
		u_int32_t * expected, u_int32_t * found, struct tlvs *tlvs,
                u_int32_t * auth_tlv_offset);
int add_tlv (u_char, u_char, u_char *, struct stream *);
void free_tlv (void *val);

int tlv_add_area_addrs (struct list *area_addrs, struct stream *stream);
int tlv_add_is_neighs (struct list *is_neighs, struct stream *stream);
int tlv_add_te_is_neighs (struct list *te_is_neighs, struct stream *stream);
int tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream);
int tlv_add_nlpid (struct nlpids *nlpids, struct stream *stream);
int tlv_add_checksum (struct checksum *checksum, struct stream *stream);
int tlv_add_authinfo (u_char auth_type, u_char authlen, u_char *auth_value,
		      struct stream *stream);
int tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream);
int tlv_add_in_addr (struct in_addr *, struct stream *stream, u_char tag);
int tlv_add_dynamic_hostname (struct hostname *hostname,
			      struct stream *stream);
int tlv_add_lsp_entries (struct list *lsps, struct stream *stream);
int tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream);
int tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream);
#ifdef HAVE_IPV6
int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream);
int tlv_add_ipv6_reachs (struct list *ipv6_reachs, struct stream *stream);
#endif /* HAVE_IPV6 */

int tlv_add_padding (struct stream *stream);

#endif /* _ZEBRA_ISIS_TLV_H */
Commit	Line	Data
eb5d44eb	1	/*
	2	* IS-IS Rout(e)ing protocol - isis_tlv.h
	3	* IS-IS TLV related routines
	4	*
	5	* Copyright (C) 2001,2002 Sampo Saaristo
	6	* Tampere University of Technology
	7	* Institute of Communications Engineering
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public Licenseas published by the Free
	11	* Software Foundation; either version 2 of the License, or (at your option)
	12	* any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,but WITHOUT
	15	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	16	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	17	* more details.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write to the Free Software Foundation, Inc.,
	21	* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	22	*/
	23
	24	#ifndef _ZEBRA_ISIS_TLV_H
	25	#define _ZEBRA_ISIS_TLV_H
	26
	27	/*
72b9c956	28	* The list of TLVs we (should) support.
	29	* ____________________________________________________________________________
	30	* Name Value IIH LSP SNP Status
	31	* LAN
	32	* ____________________________________________________________________________
3f045a08	33	*
72b9c956	34	* Area Addresses 1 y y n ISO10589
	35	* IIS Neighbors 2 n y n ISO10589
	36	* ES Neighbors 3 n y n ISO10589
	37	* IIS Neighbors 6 y n n ISO10589
	38	* Padding 8 y n n ISO10589
	39	* LSP Entries 9 n n y ISO10589
	40	* Authentication 10 y y y ISO10589, RFC3567
	41	* Checksum 12 y n y RFC3358
3f045a08	42	* TE IS Reachability 22 n y n RFC5305
72b9c956	43	* IS Alias 24 n y n RFC3786
	44	* IP Int. Reachability 128 n y n RFC1195
	45	* Protocols Supported 129 y y n RFC1195
	46	* IP Ext. Reachability 130 n y n RFC1195
	47	* IDRPI 131 n y y RFC1195
	48	* IP Interface Address 132 y y n RFC1195
3f045a08 JB	49	* TE Router ID 134 n y n RFC5305
3f045a08 JB	50	* Extended IP Reachability 135 n y n RFC5305
72b9c956	51	* Dynamic Hostname 137 n y n RFC2763
3f045a08	52	* Shared Risk Link Group 138 n y y RFC5307
72b9c956	53	* Restart TLV 211 y n n RFC3847
3f045a08 JB	54	* MT IS Reachability 222 n y n RFC5120
	55	* MT Supported 229 y y n RFC5120
	56	* IPv6 Interface Address 232 y y n RFC5308
	57	* MT IP Reachability 235 n y n RFC5120
	58	* IPv6 IP Reachability 236 n y n RFC5308
	59	* MT IPv6 IP Reachability 237 n y n RFC5120
72b9c956	60	* P2P Adjacency State 240 y n n RFC3373
	61	* IIH Sequence Number 241 y n n draft-shen-isis-iih-sequence
	62	* Router Capability 242 - - - draft-ietf-isis-caps
	63	*
3f045a08	64	*
72b9c956	65	* IS Reachability sub-TLVs we (should) support.
	66	* ____________________________________________________________________________
	67	* Name Value Status
	68	* ____________________________________________________________________________
3f045a08 JB	69	* Administartive group (color) 3 RFC5305
	70	* Link Local/Remote Identifiers 4 RFC5307
	71	* IPv4 interface address 6 RFC5305
	72	* IPv4 neighbor address 8 RFC5305
	73	* Maximum link bandwidth 9 RFC5305
	74	* Reservable link bandwidth 10 RFC5305
	75	* Unreserved bandwidth 11 RFC5305
	76	* TE Default metric 18 RFC5305
	77	* Link Protection Type 20 RFC5307
	78	* Interface Switching Capability 21 RFC5307
	79	*
72b9c956	80	*
72b9c956	81	* IP Reachability sub-TLVs we (should) support.
	82	* ____________________________________________________________________________
	83	* Name Value Status
	84	* ____________________________________________________________________________
3f045a08 JB	85	* 32bit administrative tag 1 RFC5130
	86	* 64bit administrative tag 2 RFC5130
	87	* Management prefix color 117 RFC5120
eb5d44eb	88	*/
	89
	90	#define AREA_ADDRESSES 1
	91	#define IS_NEIGHBOURS 2
	92	#define ES_NEIGHBOURS 3
eb5d44eb	93	#define LAN_NEIGHBOURS 6
	94	#define PADDING 8
	95	#define LSP_ENTRIES 9
	96	#define AUTH_INFO 10
	97	#define CHECKSUM 12
	98	#define TE_IS_NEIGHBOURS 22
72b9c956	99	#define IS_ALIAS 24
eb5d44eb	100	#define IPV4_INT_REACHABILITY 128
eb5d44eb	101	#define PROTOCOLS_SUPPORTED 129
72b9c956	102	#define IPV4_EXT_REACHABILITY 130
eb5d44eb	103	#define IDRP_INFO 131
	104	#define IPV4_ADDR 132
	105	#define TE_ROUTER_ID 134
	106	#define TE_IPV4_REACHABILITY 135
	107	#define DYNAMIC_HOSTNAME 137
00995cfc	108	#define GRACEFUL_RESTART 211
eb5d44eb	109	#define IPV6_ADDR 232
72b9c956	110	#define IPV6_REACHABILITY 236
eb5d44eb	111	#define WAY3_HELLO 240
eb5d44eb	112
3f045a08 JB	113	#define AUTH_INFO_HDRLEN 3
3f045a08 JB	114
eb5d44eb	115	#define IS_NEIGHBOURS_LEN (ISIS_SYS_ID_LEN + 5)
eb5d44eb	116	#define LAN_NEIGHBOURS_LEN 6
f390d2c7	117	#define LSP_ENTRIES_LEN (10 + ISIS_SYS_ID_LEN) /* FIXME: should be entry */
eb5d44eb	118	#define IPV4_REACH_LEN 12
eb5d44eb	119	#define IPV6_REACH_LEN 22
3f045a08	120	#define TE_IPV4_REACH_LEN 9
eb5d44eb	121
eb5d44eb	122	/* struct for neighbor */
f390d2c7	123	struct is_neigh
	124	{
	125	struct metric metrics;
	126	u_char neigh_id[ISIS_SYS_ID_LEN + 1];
eb5d44eb	127	};
	128
	129	/* struct for te is neighbor */
f390d2c7	130	struct te_is_neigh
	131	{
	132	u_char neigh_id[ISIS_SYS_ID_LEN + 1];
	133	u_char te_metric[3];
	134	u_char sub_tlvs_length;
eb5d44eb	135	};
eb5d44eb	136
3f045a08 JB	137	/* Decode and encode three-octet metric into host byte order integer */
	138	#define GET_TE_METRIC(t) \
	139	(((unsigned)(t)->te_metric[0]<<16) \| ((t)->te_metric[1]<<8) \| \
	140	(t)->te_metric[2])
	141	#define SET_TE_METRIC(t, m) \
	142	(((t)->te_metric[0] = (m) >> 16), \
	143	((t)->te_metric[1] = (m) >> 8), \
	144	((t)->te_metric[2] = (m)))
	145
eb5d44eb	146	/* struct for es neighbors */
f390d2c7	147	struct es_neigh
	148	{
	149	struct metric metrics;
eb5d44eb	150	/* approximate position of first, we use the
eb5d44eb	151	* length ((uchar)metric-1) to know all /
f390d2c7	152	u_char first_es_neigh[ISIS_SYS_ID_LEN];
f390d2c7	153
eb5d44eb	154	};
eb5d44eb	155
f390d2c7	156	struct partition_desig_level2_is
	157	{
	158	struct list *isis_system_ids;
eb5d44eb	159	};
	160
	161	/* struct for lan neighbors */
f390d2c7	162	struct lan_neigh
	163	{
	164	u_char LAN_addr[6];
eb5d44eb	165	};
eb5d44eb	166
238497fc PJ	167	#ifdef __SUNPRO_C
	168	#pragma pack(1)
	169	#endif
	170
eb5d44eb	171	/* struct for LSP entry */
f390d2c7	172	struct lsp_entry
	173	{
	174	u_int16_t rem_lifetime;
	175	u_char lsp_id[ISIS_SYS_ID_LEN + 2];
	176	u_int32_t seq_num;
	177	u_int16_t checksum;
	178	} __attribute__ ((packed));
eb5d44eb	179
238497fc PJ	180	#ifdef __SUNPRO_C
	181	#pragma pack()
	182	#endif
	183
eb5d44eb	184	/* struct for checksum */
f390d2c7	185	struct checksum
f390d2c7	186	{
eb5d44eb	187	u_int16_t checksum;
	188	};
	189
	190	/* ipv4 reachability */
f390d2c7	191	struct ipv4_reachability
f390d2c7	192	{
eb5d44eb	193	struct metric metrics;
eb5d44eb	194	struct in_addr prefix;
f390d2c7	195	struct in_addr mask;
eb5d44eb	196	};
	197
	198	/* te router id */
f390d2c7	199	struct te_router_id
	200	{
	201	struct in_addr id;
eb5d44eb	202	};
	203
	204	/* te ipv4 reachability */
f390d2c7	205	struct te_ipv4_reachability
	206	{
	207	u_int32_t te_metric;
	208	u_char control;
	209	u_char prefix_start; /* since this is variable length by nature it only */
	210	}; /* points to an approximate location */
eb5d44eb	211
	212
	213
f390d2c7	214	struct idrp_info
f390d2c7	215	{
eb5d44eb	216	u_char len;
	217	u_char *value;
	218	};
	219
	220	#ifdef HAVE_IPV6
f390d2c7	221	struct ipv6_reachability
	222	{
	223	u_int32_t metric;
	224	u_char control_info;
	225	u_char prefix_len;
	226	u_char prefix[16];
eb5d44eb	227	};
eb5d44eb	228
	229	/* bits in control_info */
	230	#define CTRL_INFO_DIRECTION 0x80
	231	#define DIRECTION_UP 0
	232	#define DIRECTION_DOWN 1
	233	#define CTRL_INFO_DISTRIBUTION 0x40
	234	#define DISTRIBUTION_INTERNAL 0
	235	#define DISTRIBUTION_EXTERNAL 1
	236	#define CTRL_INFO_SUBTLVS 0x20
3f045a08	237	#endif /* HAVE_IPV6 */
eb5d44eb	238
	239	/*
	240	* Pointer to each tlv type, filled by parse_tlvs()
	241	*/
f390d2c7	242	struct tlvs
f390d2c7	243	{
3f045a08 JB	244	struct checksum *checksum;
	245	struct hostname *hostname;
	246	struct nlpids *nlpids;
	247	struct te_router_id *router_id;
f390d2c7	248	struct list *area_addrs;
	249	struct list *is_neighs;
	250	struct list *te_is_neighs;
	251	struct list *es_neighs;
	252	struct list *lsp_entries;
	253	struct list *prefix_neighs;
	254	struct list *lan_neighs;
f390d2c7	255	struct list *ipv4_addrs;
	256	struct list *ipv4_int_reachs;
	257	struct list *ipv4_ext_reachs;
	258	struct list *te_ipv4_reachs;
eb5d44eb	259	#ifdef HAVE_IPV6
f390d2c7	260	struct list *ipv6_addrs;
f390d2c7	261	struct list *ipv6_reachs;
eb5d44eb	262	#endif
f390d2c7	263	struct isis_passwd auth_info;
eb5d44eb	264	};
	265
	266	/*
	267	* Own definitions - used to bitmask found and expected
	268	*/
	269
	270	#define TLVFLAG_AREA_ADDRS (1<<0)
	271	#define TLVFLAG_IS_NEIGHS (1<<1)
	272	#define TLVFLAG_ES_NEIGHS (1<<2)
	273	#define TLVFLAG_PARTITION_DESIG_LEVEL2_IS (1<<3)
	274	#define TLVFLAG_PREFIX_NEIGHS (1<<4)
	275	#define TLVFLAG_LAN_NEIGHS (1<<5)
	276	#define TLVFLAG_LSP_ENTRIES (1<<6)
	277	#define TLVFLAG_PADDING (1<<7)
	278	#define TLVFLAG_AUTH_INFO (1<<8)
	279	#define TLVFLAG_IPV4_INT_REACHABILITY (1<<9)
	280	#define TLVFLAG_NLPID (1<<10)
	281	#define TLVFLAG_IPV4_EXT_REACHABILITY (1<<11)
	282	#define TLVFLAG_IPV4_ADDR (1<<12)
	283	#define TLVFLAG_DYN_HOSTNAME (1<<13)
	284	#define TLVFLAG_IPV6_ADDR (1<<14)
	285	#define TLVFLAG_IPV6_REACHABILITY (1<<15)
	286	#define TLVFLAG_TE_IS_NEIGHS (1<<16)
	287	#define TLVFLAG_TE_IPV4_REACHABILITY (1<<17)
	288	#define TLVFLAG_3WAY_HELLO (1<<18)
	289	#define TLVFLAG_TE_ROUTER_ID (1<<19)
	290	#define TLVFLAG_CHECKSUM (1<<20)
00995cfc	291	#define TLVFLAG_GRACEFUL_RESTART (1<<21)
eb5d44eb	292
f390d2c7	293	void init_tlvs (struct tlvs *tlvs, uint32_t expected);
	294	void free_tlvs (struct tlvs *tlvs);
	295	int parse_tlvs (char areatag, u_char stream, int size,
3f045a08 JB	296	u_int32_t * expected, u_int32_t * found, struct tlvs *tlvs,
	297	u_int32_t * auth_tlv_offset);
	298	int add_tlv (u_char, u_char, u_char , struct stream );
f390d2c7	299	void free_tlv (void *val);
eb5d44eb	300
f390d2c7	301	int tlv_add_area_addrs (struct list area_addrs, struct stream stream);
f390d2c7	302	int tlv_add_is_neighs (struct list is_neighs, struct stream stream);
ea3be4c1	303	int tlv_add_te_is_neighs (struct list te_is_neighs, struct stream stream);
f390d2c7	304	int tlv_add_lan_neighs (struct list lan_neighs, struct stream stream);
	305	int tlv_add_nlpid (struct nlpids nlpids, struct stream stream);
	306	int tlv_add_checksum (struct checksum checksum, struct stream stream);
3f045a08	307	int tlv_add_authinfo (u_char auth_type, u_char authlen, u_char *auth_value,
f390d2c7	308	struct stream *stream);
f390d2c7	309	int tlv_add_ip_addrs (struct list ip_addrs, struct stream stream);
81ad8f6a	310	int tlv_add_in_addr (struct in_addr , struct stream stream, u_char tag);
f390d2c7	311	int tlv_add_dynamic_hostname (struct hostname *hostname,
eb5d44eb	312	struct stream *stream);
f390d2c7	313	int tlv_add_lsp_entries (struct list lsps, struct stream stream);
f390d2c7	314	int tlv_add_ipv4_reachs (struct list ipv4_reachs, struct stream stream);
ea3be4c1	315	int tlv_add_te_ipv4_reachs (struct list te_ipv4_reachs, struct stream stream);
eb5d44eb	316	#ifdef HAVE_IPV6
f390d2c7	317	int tlv_add_ipv6_addrs (struct list ipv6_addrs, struct stream stream);
f390d2c7	318	int tlv_add_ipv6_reachs (struct list ipv6_reachs, struct stream stream);
eb5d44eb	319	#endif /* HAVE_IPV6 */
eb5d44eb	320
f390d2c7	321	int tlv_add_padding (struct stream *stream);
eb5d44eb	322
eb5d44eb	323	#endif /* _ZEBRA_ISIS_TLV_H */