]>
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 | * ____________________________________________________________________________ | |
33 | * | |
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 | |
42 | * TE IS Reachability 22 n y n RFC3784 | |
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 | |
49 | * TE Router ID 134 n y n RFC3784 | |
50 | * Extended IP Reachability 135 n y n RFC3784 | |
51 | * Dynamic Hostname 137 n y n RFC2763 | |
52 | * Shared Risk Link Group 138 n y y draft-ietf-isis-gmpls-extensions | |
53 | * Restart TLV 211 y n n RFC3847 | |
54 | * MT IS Reachability 222 n y n draft-ietf-isis-wg-multi-topology | |
55 | * MT Supported 229 y y n draft-ietf-isis-wg-multi-topology | |
56 | * IPv6 Interface Address 232 y y n draft-ietf-isis_ipv6 | |
57 | * MT IP Reachability 235 n y n draft-ietf-isis-wg-multi-topology | |
58 | * IPv6 IP Reachability 236 n y n draft-ietf-isis_ipv6 | |
59 | * MT IPv6 IP Reachability 237 n y n draft-ietf-isis-wg-multi-topology | |
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 | * | |
64 | * | |
65 | * IS Reachability sub-TLVs we (should) support. | |
66 | * ____________________________________________________________________________ | |
67 | * Name Value Status | |
68 | * ____________________________________________________________________________ | |
69 | * Administartive group (color) 3 RFC3784 | |
70 | * Link Local/Remote Identifiers 4 draft-ietf-isis-gmpls-extensions | |
71 | * IPv4 interface address 6 RFC3784 | |
72 | * IPv4 neighbor address 8 RFC3784 | |
73 | * Maximum link bandwidth 9 RFC3784 | |
74 | * Reservable link bandwidth 10 RFC3784 | |
75 | * Unreserved bandwidth 11 RFC3784 | |
76 | * TE Default metric 18 RFC3784 | |
77 | * Link Protection Type 20 draft-ietf-isis-gmpls-extensions | |
78 | * Interface Switching Capability 21 draft-ietf-isis-gmpls-extensions | |
79 | * | |
80 | * | |
81 | * IP Reachability sub-TLVs we (should) support. | |
82 | * ____________________________________________________________________________ | |
83 | * Name Value Status | |
84 | * ____________________________________________________________________________ | |
85 | * 32bit administrative tag 1 draft-ietf-isis-admin-tags | |
86 | * 64bit administrative tag 2 draft-ietf-isis-admin-tags | |
87 | * Management prefix color 117 draft-ietf-isis-wg-multi-topology | |
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 |
112 | ||
113 | #define IS_NEIGHBOURS_LEN (ISIS_SYS_ID_LEN + 5) | |
114 | #define LAN_NEIGHBOURS_LEN 6 | |
f390d2c7 | 115 | #define LSP_ENTRIES_LEN (10 + ISIS_SYS_ID_LEN) /* FIXME: should be entry */ |
eb5d44eb | 116 | #define IPV4_REACH_LEN 12 |
117 | #define IPV6_REACH_LEN 22 | |
118 | ||
119 | /* struct for neighbor */ | |
f390d2c7 | 120 | struct is_neigh |
121 | { | |
122 | struct metric metrics; | |
123 | u_char neigh_id[ISIS_SYS_ID_LEN + 1]; | |
eb5d44eb | 124 | }; |
125 | ||
126 | /* struct for te is neighbor */ | |
f390d2c7 | 127 | struct te_is_neigh |
128 | { | |
129 | u_char neigh_id[ISIS_SYS_ID_LEN + 1]; | |
130 | u_char te_metric[3]; | |
131 | u_char sub_tlvs_length; | |
eb5d44eb | 132 | }; |
133 | ||
134 | /* struct for es neighbors */ | |
f390d2c7 | 135 | struct es_neigh |
136 | { | |
137 | struct metric metrics; | |
eb5d44eb | 138 | /* approximate position of first, we use the |
139 | * length ((uchar*)metric-1) to know all */ | |
f390d2c7 | 140 | u_char first_es_neigh[ISIS_SYS_ID_LEN]; |
141 | ||
eb5d44eb | 142 | }; |
143 | ||
f390d2c7 | 144 | struct partition_desig_level2_is |
145 | { | |
146 | struct list *isis_system_ids; | |
eb5d44eb | 147 | }; |
148 | ||
149 | /* struct for lan neighbors */ | |
f390d2c7 | 150 | struct lan_neigh |
151 | { | |
152 | u_char LAN_addr[6]; | |
eb5d44eb | 153 | }; |
154 | ||
238497fc PJ |
155 | #ifdef __SUNPRO_C |
156 | #pragma pack(1) | |
157 | #endif | |
158 | ||
eb5d44eb | 159 | /* struct for LSP entry */ |
f390d2c7 | 160 | struct lsp_entry |
161 | { | |
162 | u_int16_t rem_lifetime; | |
163 | u_char lsp_id[ISIS_SYS_ID_LEN + 2]; | |
164 | u_int32_t seq_num; | |
165 | u_int16_t checksum; | |
166 | } __attribute__ ((packed)); | |
eb5d44eb | 167 | |
238497fc PJ |
168 | #ifdef __SUNPRO_C |
169 | #pragma pack() | |
170 | #endif | |
171 | ||
eb5d44eb | 172 | /* struct for checksum */ |
f390d2c7 | 173 | struct checksum |
174 | { | |
eb5d44eb | 175 | u_int16_t checksum; |
176 | }; | |
177 | ||
178 | /* ipv4 reachability */ | |
f390d2c7 | 179 | struct ipv4_reachability |
180 | { | |
eb5d44eb | 181 | struct metric metrics; |
182 | struct in_addr prefix; | |
f390d2c7 | 183 | struct in_addr mask; |
eb5d44eb | 184 | }; |
185 | ||
186 | /* te router id */ | |
f390d2c7 | 187 | struct te_router_id |
188 | { | |
189 | struct in_addr id; | |
eb5d44eb | 190 | }; |
191 | ||
192 | /* te ipv4 reachability */ | |
f390d2c7 | 193 | struct te_ipv4_reachability |
194 | { | |
195 | u_int32_t te_metric; | |
196 | u_char control; | |
197 | u_char prefix_start; /* since this is variable length by nature it only */ | |
198 | }; /* points to an approximate location */ | |
eb5d44eb | 199 | |
200 | ||
201 | ||
f390d2c7 | 202 | struct idrp_info |
203 | { | |
eb5d44eb | 204 | u_char len; |
205 | u_char *value; | |
206 | }; | |
207 | ||
208 | #ifdef HAVE_IPV6 | |
f390d2c7 | 209 | struct ipv6_reachability |
210 | { | |
211 | u_int32_t metric; | |
212 | u_char control_info; | |
213 | u_char prefix_len; | |
214 | u_char prefix[16]; | |
eb5d44eb | 215 | }; |
216 | #endif /* HAVE_IPV6 */ | |
217 | ||
218 | /* bits in control_info */ | |
219 | #define CTRL_INFO_DIRECTION 0x80 | |
220 | #define DIRECTION_UP 0 | |
221 | #define DIRECTION_DOWN 1 | |
222 | #define CTRL_INFO_DISTRIBUTION 0x40 | |
223 | #define DISTRIBUTION_INTERNAL 0 | |
224 | #define DISTRIBUTION_EXTERNAL 1 | |
225 | #define CTRL_INFO_SUBTLVS 0x20 | |
226 | ||
227 | /* | |
228 | * Pointer to each tlv type, filled by parse_tlvs() | |
229 | */ | |
f390d2c7 | 230 | struct tlvs |
231 | { | |
232 | struct list *area_addrs; | |
233 | struct list *is_neighs; | |
234 | struct list *te_is_neighs; | |
235 | struct list *es_neighs; | |
236 | struct list *lsp_entries; | |
237 | struct list *prefix_neighs; | |
238 | struct list *lan_neighs; | |
239 | struct checksum *checksum; | |
240 | struct nlpids *nlpids; | |
241 | struct list *ipv4_addrs; | |
242 | struct list *ipv4_int_reachs; | |
243 | struct list *ipv4_ext_reachs; | |
244 | struct list *te_ipv4_reachs; | |
245 | struct hostname *hostname; | |
246 | struct te_router_id *router_id; | |
eb5d44eb | 247 | #ifdef HAVE_IPV6 |
f390d2c7 | 248 | struct list *ipv6_addrs; |
249 | struct list *ipv6_reachs; | |
eb5d44eb | 250 | #endif |
f390d2c7 | 251 | struct isis_passwd auth_info; |
eb5d44eb | 252 | }; |
253 | ||
254 | /* | |
255 | * Own definitions - used to bitmask found and expected | |
256 | */ | |
257 | ||
258 | #define TLVFLAG_AREA_ADDRS (1<<0) | |
259 | #define TLVFLAG_IS_NEIGHS (1<<1) | |
260 | #define TLVFLAG_ES_NEIGHS (1<<2) | |
261 | #define TLVFLAG_PARTITION_DESIG_LEVEL2_IS (1<<3) | |
262 | #define TLVFLAG_PREFIX_NEIGHS (1<<4) | |
263 | #define TLVFLAG_LAN_NEIGHS (1<<5) | |
264 | #define TLVFLAG_LSP_ENTRIES (1<<6) | |
265 | #define TLVFLAG_PADDING (1<<7) | |
266 | #define TLVFLAG_AUTH_INFO (1<<8) | |
267 | #define TLVFLAG_IPV4_INT_REACHABILITY (1<<9) | |
268 | #define TLVFLAG_NLPID (1<<10) | |
269 | #define TLVFLAG_IPV4_EXT_REACHABILITY (1<<11) | |
270 | #define TLVFLAG_IPV4_ADDR (1<<12) | |
271 | #define TLVFLAG_DYN_HOSTNAME (1<<13) | |
272 | #define TLVFLAG_IPV6_ADDR (1<<14) | |
273 | #define TLVFLAG_IPV6_REACHABILITY (1<<15) | |
274 | #define TLVFLAG_TE_IS_NEIGHS (1<<16) | |
275 | #define TLVFLAG_TE_IPV4_REACHABILITY (1<<17) | |
276 | #define TLVFLAG_3WAY_HELLO (1<<18) | |
277 | #define TLVFLAG_TE_ROUTER_ID (1<<19) | |
278 | #define TLVFLAG_CHECKSUM (1<<20) | |
00995cfc | 279 | #define TLVFLAG_GRACEFUL_RESTART (1<<21) |
eb5d44eb | 280 | |
f390d2c7 | 281 | void init_tlvs (struct tlvs *tlvs, uint32_t expected); |
282 | void free_tlvs (struct tlvs *tlvs); | |
283 | int parse_tlvs (char *areatag, u_char * stream, int size, | |
284 | u_int32_t * expected, u_int32_t * found, struct tlvs *tlvs); | |
285 | void free_tlv (void *val); | |
eb5d44eb | 286 | |
f390d2c7 | 287 | int tlv_add_area_addrs (struct list *area_addrs, struct stream *stream); |
288 | int tlv_add_is_neighs (struct list *is_neighs, struct stream *stream); | |
ea3be4c1 | 289 | int tlv_add_te_is_neighs (struct list *te_is_neighs, struct stream *stream); |
f390d2c7 | 290 | int tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream); |
291 | int tlv_add_nlpid (struct nlpids *nlpids, struct stream *stream); | |
292 | int tlv_add_checksum (struct checksum *checksum, struct stream *stream); | |
f7c43dcb | 293 | int tlv_add_authinfo (char auth_type, char authlen, u_char *auth_value, |
f390d2c7 | 294 | struct stream *stream); |
295 | int tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream); | |
81ad8f6a | 296 | int tlv_add_in_addr (struct in_addr *, struct stream *stream, u_char tag); |
f390d2c7 | 297 | int tlv_add_dynamic_hostname (struct hostname *hostname, |
eb5d44eb | 298 | struct stream *stream); |
f390d2c7 | 299 | int tlv_add_lsp_entries (struct list *lsps, struct stream *stream); |
300 | int tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream); | |
ea3be4c1 | 301 | int tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream); |
eb5d44eb | 302 | #ifdef HAVE_IPV6 |
f390d2c7 | 303 | int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream); |
304 | int tlv_add_ipv6_reachs (struct list *ipv6_reachs, struct stream *stream); | |
eb5d44eb | 305 | #endif /* HAVE_IPV6 */ |
306 | ||
f390d2c7 | 307 | int tlv_add_padding (struct stream *stream); |
eb5d44eb | 308 | |
309 | #endif /* _ZEBRA_ISIS_TLV_H */ |