| /* |
| * 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 |
| |
| /* |
| * Structures found in TLV's. |
| * this header is fully complient with |
| * RFC 3359 |
| 1. TLV Codepoints reserved |
| ____________________________________________________ |
| Name Value IIH LSP SNP Status |
| ____________________________________________________ |
| |
| Area Addresses 1 y y n ISO 10589 |
| IIS Neighbors 2 n y n ISO 10589 |
| ES Neighbors 3 n y n ISO 10589 |
| Part. DIS 4 n y n ISO 10589 |
| Prefix Neighbors 5 n y n ISO 10589 |
| IIS Neighbors 6 y n n ISO 10589 |
| Padding 8 y n n ISO 10589 |
| LSP Entries 9 n n y ISO 10589 |
| Authentication 10 y y y ISO 10589 |
| Opt. Checksum 12 y n y RFC 3358 |
| LSPBufferSize 14 n y n ISO 10589 Rev 2 Draft |
| TE IIS Neigh. 22 n y n RFC 3784 |
| IS Alias ID 24 n y n RFC 3786 |
| DECnet Phase IV 42 y n n DEC (ancient) |
| Lucent Proprietary 66 n y n |
| IP Int. Reach 128 n y n RFC 1195 |
| Prot. Supported 129 y y n RFC 1195 |
| IP Ext. Address 130 n y n RFC 1195 |
| IDRPI 131 n y y RFC 1195 |
| IP Intf. Address 132 y y n RFC 1195 |
| Illegal 133 n n n RFC 1195 (not used) |
| Router ID 134 n y n RFC 3784 |
| TE IP. Reach 135 n y n RFC 3784 |
| Dynamic Name 137 n y n RFC 2763 |
| Nortel Proprietary 176 n y n |
| Nortel Proprietary 177 n y n |
| Restart TLV 211 y n n RFC 3847 |
| MT-ISN 222 n y n IETF-draft |
| M-Topologies 229 y y n IETF-draft |
| IPv6 Intf. Addr. 232 y y n IETF-draft |
| MT IP. Reach 235 n y n IETF-draft |
| IPv6 IP. Reach 236 n y n IETF-draft |
| MT IPv6 IP. Reach 237 n y n IETF-draft |
| P2P Adjacency State 240 y n n RFC 3373 |
| |
| */ |
| |
| #define AREA_ADDRESSES 1 |
| #define IS_NEIGHBOURS 2 |
| #define ES_NEIGHBOURS 3 |
| #define PARTITION_DESIG_LEVEL2_IS 4 |
| #define PREFIX_NEIGHBOURS 5 |
| #define LAN_NEIGHBOURS 6 |
| #define PADDING 8 |
| #define LSP_ENTRIES 9 |
| #define AUTH_INFO 10 |
| #define CHECKSUM 12 |
| #define TE_IS_NEIGHBOURS 22 |
| #define IPV4_INT_REACHABILITY 128 |
| #define IPV4_EXT_REACHABILITY 130 |
| #define PROTOCOLS_SUPPORTED 129 |
| #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_REACHABILITY 236 |
| #define IPV6_ADDR 232 |
| #define WAY3_HELLO 240 |
| |
| #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 |
| |
| /* 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; |
| }; |
| |
| /* 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]; |
| }; |
| |
| /* 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)); |
| |
| /* 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]; |
| }; |
| #endif /* HAVE_IPV6 */ |
| |
| /* 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 |
| |
| /* |
| * Pointer to each tlv type, filled by parse_tlvs() |
| */ |
| struct tlvs |
| { |
| 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 checksum *checksum; |
| struct nlpids *nlpids; |
| struct list *ipv4_addrs; |
| struct list *ipv4_int_reachs; |
| struct list *ipv4_ext_reachs; |
| struct list *te_ipv4_reachs; |
| struct hostname *hostname; |
| struct te_router_id *router_id; |
| #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); |
| 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_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 (char auth_type, char authlen, char *auth_value, |
| struct stream *stream); |
| int tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream); |
| 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); |
| #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 */ |