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* IS-IS Rout(e)ing protocol - isis_tlv.h
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* IS-IS TLV related routines
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* Copyright (C) 2001,2002 Sampo Saaristo
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* Tampere University of Technology
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* Institute of Communications Engineering
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public Licenseas published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* This program is distributed in the hope that it will be useful,but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef _ZEBRA_ISIS_TLV_H
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#define _ZEBRA_ISIS_TLV_H
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* Structures found in TLV's.
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* this header is fully complient with
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* draft-ietf-isis-wg-tlv-codepoints-02.txt
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1. TLV Codepoints reserved
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____________________________________________________
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Name Value IIH LSP SNP Status
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____________________________________________________
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Area Addresses 1 y y n ISO 10589
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IIS Neighbors 2 n y n ISO 10589
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ES Neighbors 3 n y n ISO 10589
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Part. DIS 4 n y n ISO 10589
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Prefix Neighbors 5 n y n ISO 10589
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IIS Neighbors 6 y n n ISO 10589
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Padding 8 y n n ISO 10589
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LSP Entries 9 n n y ISO 10589
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Authentication 10 y y y ISO 10589
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Opt. Checksum 12 y n y IETF-draft
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LSPBufferSize 14 n y n ISO 10589 Rev 2 Draft
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TE IIS Neigh. 22 n y n IETF-draft
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DECnet Phase IV 42 y n n DEC (ancient)
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IP Int. Reach 128 n y n RFC 1195
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Prot. Supported 129 y y n RFC 1195
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IP Ext. Address 130 n y n RFC 1195
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IDRPI 131 n y y RFC 1195
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IP Intf. Address 132 y y n RFC 1195
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Illegal 133 n n n RFC 1195 (not used)
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Router ID 134 n y n IETF-draft
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TE IP. Reach 135 n y n IETF-draft
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Dynamic Name 137 n y n RFC 2763
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Nortel Proprietary 176 n y n
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Nortel Proprietary 177 n y n
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Restart TLV 211 y n n IETF-draft
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MT-ISN 222 n y n IETF-draft
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M-Topologies 229 y y n IETF-draft
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IPv6 Intf. Addr. 232 y y n IETF-draft
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MT IP. Reach 235 n y n IETF-draft
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IPv6 IP. Reach 236 n y n IETF-draft
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MT IPv6 IP. Reach 237 n y n IETF-draft
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P2P Adjacency State 240 y n n IETF-draft
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#define AREA_ADDRESSES 1
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#define IS_NEIGHBOURS 2
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#define ES_NEIGHBOURS 3
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#define PARTITION_DESIG_LEVEL2_IS 4
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#define PREFIX_NEIGHBOURS 5
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#define LAN_NEIGHBOURS 6
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#define TE_IS_NEIGHBOURS 22
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#define IPV4_INT_REACHABILITY 128
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#define IPV4_EXT_REACHABILITY 130
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#define PROTOCOLS_SUPPORTED 129
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#define TE_ROUTER_ID 134
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#define TE_IPV4_REACHABILITY 135
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#define DYNAMIC_HOSTNAME 137
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#define IPV6_REACHABILITY 236
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#define WAY3_HELLO 240
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#define IS_NEIGHBOURS_LEN (ISIS_SYS_ID_LEN + 5)
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#define LAN_NEIGHBOURS_LEN 6
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#define LSP_ENTRIES_LEN (10 + ISIS_SYS_ID_LEN) /* FIXME: should be entry */
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#define IPV4_REACH_LEN 12
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#define IPV6_REACH_LEN 22
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/* struct for neighbor */
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struct metric metrics;
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u_char neigh_id[ISIS_SYS_ID_LEN + 1];
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/* struct for te is neighbor */
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u_char neigh_id[ISIS_SYS_ID_LEN + 1];
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u_char sub_tlvs_length;
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/* struct for es neighbors */
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struct metric metrics;
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/* approximate position of first, we use the
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* length ((uchar*)metric-1) to know all */
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u_char first_es_neigh[ISIS_SYS_ID_LEN];
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struct partition_desig_level2_is{
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struct list *isis_system_ids;
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/* struct for lan neighbors */
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/* struct for LSP entry */
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u_int16_t rem_lifetime;
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u_char lsp_id[ISIS_SYS_ID_LEN + 2];
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} __attribute__((packed));
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/* struct for checksum */
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/* ipv4 reachability */
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struct ipv4_reachability {
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struct metric metrics;
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struct in_addr prefix;
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struct te_router_id {
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/* te ipv4 reachability */
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struct te_ipv4_reachability {
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u_char prefix_start; /* since this is variable length by nature it only */
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}; /* points to an approximate location */
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struct ipv6_reachability {
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#endif /* HAVE_IPV6 */
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/* bits in control_info */
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#define CTRL_INFO_DIRECTION 0x80
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#define DIRECTION_UP 0
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#define DIRECTION_DOWN 1
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#define CTRL_INFO_DISTRIBUTION 0x40
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#define DISTRIBUTION_INTERNAL 0
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#define DISTRIBUTION_EXTERNAL 1
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#define CTRL_INFO_SUBTLVS 0x20
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* Pointer to each tlv type, filled by parse_tlvs()
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struct list *area_addrs;
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struct list *is_neighs;
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struct list *te_is_neighs;
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struct list *es_neighs;
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struct list *lsp_entries;
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struct list *prefix_neighs;
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struct list *lan_neighs;
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struct checksum *checksum;
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struct nlpids *nlpids;
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struct list *ipv4_addrs;
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struct list *ipv4_int_reachs;
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struct list *ipv4_ext_reachs;
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struct list *te_ipv4_reachs;
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struct hostname *hostname;
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struct te_router_id *router_id;
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struct list *ipv6_addrs;
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struct list *ipv6_reachs;
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struct isis_passwd auth_info;
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* Own definitions - used to bitmask found and expected
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#define TLVFLAG_AREA_ADDRS (1<<0)
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#define TLVFLAG_IS_NEIGHS (1<<1)
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#define TLVFLAG_ES_NEIGHS (1<<2)
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#define TLVFLAG_PARTITION_DESIG_LEVEL2_IS (1<<3)
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#define TLVFLAG_PREFIX_NEIGHS (1<<4)
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#define TLVFLAG_LAN_NEIGHS (1<<5)
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#define TLVFLAG_LSP_ENTRIES (1<<6)
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#define TLVFLAG_PADDING (1<<7)
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#define TLVFLAG_AUTH_INFO (1<<8)
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#define TLVFLAG_IPV4_INT_REACHABILITY (1<<9)
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#define TLVFLAG_NLPID (1<<10)
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#define TLVFLAG_IPV4_EXT_REACHABILITY (1<<11)
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#define TLVFLAG_IPV4_ADDR (1<<12)
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#define TLVFLAG_DYN_HOSTNAME (1<<13)
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#define TLVFLAG_IPV6_ADDR (1<<14)
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#define TLVFLAG_IPV6_REACHABILITY (1<<15)
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#define TLVFLAG_TE_IS_NEIGHS (1<<16)
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#define TLVFLAG_TE_IPV4_REACHABILITY (1<<17)
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#define TLVFLAG_3WAY_HELLO (1<<18)
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#define TLVFLAG_TE_ROUTER_ID (1<<19)
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#define TLVFLAG_CHECKSUM (1<<20)
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void init_tlvs (struct tlvs *tlvs, uint32_t expected);
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void free_tlvs (struct tlvs *tlvs);
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int parse_tlvs (char *areatag, u_char *stream, int size, u_int32_t *expected,
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u_int32_t *found, struct tlvs *tlvs);
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void free_tlv (void *val);
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int tlv_add_area_addrs (struct list *area_addrs, struct stream *stream);
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int tlv_add_is_neighs (struct list *is_neighs, struct stream *stream);
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int tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream);
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int tlv_add_nlpid (struct nlpids *nlpids, struct stream *stream);
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int tlv_add_checksum (struct checksum *checksum,
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struct stream *stream);
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int tlv_add_authinfo (char auth_type, char authlen, char *auth_value,
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struct stream *stream);
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int tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream);
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int tlv_add_dynamic_hostname (struct hostname *hostname,struct stream *stream);
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int tlv_add_lsp_entries (struct list *lsps, struct stream *stream);
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int tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream);
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int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream);
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int tlv_add_ipv6_reachs (struct list *ipv6_reachs, struct stream *stream);
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#endif /* HAVE_IPV6 */
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int tlv_add_padding (struct stream *stream);
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#endif /* _ZEBRA_ISIS_TLV_H */
added
removed
isisd/isis_tlv.h
