embedaddon/quagga/isisd/isis_tlv.h - view

File: [ELWIX - Embedded LightWeight unIX -] / embedaddon / quagga / isisd / isis_tlv.h
Revision 1.1.1.3 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Wed Nov 2 10:09:10 2016 UTC (8 years ago) by misho
Branches: quagga, MAIN
CVS tags: v1_0_20160315, HEAD

quagga 1.0.20160315

/* * 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 MAX_TLV_LEN 255 #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 0x00 #define DIRECTION_DOWN 0x80 #define CTRL_INFO_DISTRIBUTION 0x40 #define DISTRIBUTION_INTERNAL 0x00 #define DISTRIBUTION_EXTERNAL 0x40 #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_int_reachs (struct list *ipv4_reachs, struct stream *stream); int tlv_add_ipv4_ext_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 */