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718e3744 | 1 | /* |
508e53e2 | 2 | * Copyright (C) 2003 Yasuhiro Ohara |
718e3744 | 3 | * |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the | |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | * Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #ifndef OSPF6_LSA_H | |
23 | #define OSPF6_LSA_H | |
24 | ||
508e53e2 | 25 | /* Debug option */ |
1e05838a | 26 | #define OSPF6_LSA_DEBUG 0x01 |
27 | #define OSPF6_LSA_DEBUG_ORIGINATE 0x02 | |
28 | #define OSPF6_LSA_DEBUG_EXAMIN 0x04 | |
29 | #define OSPF6_LSA_DEBUG_FLOOD 0x08 | |
30 | ||
31 | #define IS_OSPF6_DEBUG_LSA(name) \ | |
32 | (ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \ | |
33 | OSPF6_LSA_DEBUG) | |
34 | #define IS_OSPF6_DEBUG_ORIGINATE(name) \ | |
35 | (ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \ | |
36 | OSPF6_LSA_DEBUG_ORIGINATE) | |
37 | #define IS_OSPF6_DEBUG_EXAMIN(name) \ | |
38 | (ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \ | |
39 | OSPF6_LSA_DEBUG_EXAMIN) | |
40 | #define IS_OSPF6_DEBUG_LSA_TYPE(type) \ | |
41 | (ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG) | |
42 | #define IS_OSPF6_DEBUG_ORIGINATE_TYPE(type) \ | |
43 | (ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_ORIGINATE) | |
44 | #define IS_OSPF6_DEBUG_EXAMIN_TYPE(type) \ | |
45 | (ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_EXAMIN) | |
46 | #define IS_OSPF6_DEBUG_FLOOD_TYPE(type) \ | |
47 | (ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_FLOOD) | |
718e3744 | 48 | |
49 | /* LSA definition */ | |
50 | ||
508e53e2 | 51 | #define OSPF6_MAX_LSASIZE 4096 |
718e3744 | 52 | |
53 | /* Type */ | |
508e53e2 | 54 | #define OSPF6_LSTYPE_UNKNOWN 0x0000 |
55 | #define OSPF6_LSTYPE_ROUTER 0x2001 | |
56 | #define OSPF6_LSTYPE_NETWORK 0x2002 | |
57 | #define OSPF6_LSTYPE_INTER_PREFIX 0x2003 | |
58 | #define OSPF6_LSTYPE_INTER_ROUTER 0x2004 | |
59 | #define OSPF6_LSTYPE_AS_EXTERNAL 0x4005 | |
60 | #define OSPF6_LSTYPE_GROUP_MEMBERSHIP 0x2006 | |
61 | #define OSPF6_LSTYPE_TYPE_7 0x2007 | |
62 | #define OSPF6_LSTYPE_LINK 0x0008 | |
63 | #define OSPF6_LSTYPE_INTRA_PREFIX 0x2009 | |
64 | #define OSPF6_LSTYPE_SIZE 0x000a | |
718e3744 | 65 | |
66 | /* Masks for LS Type : RFC 2740 A.4.2.1 "LS type" */ | |
67 | #define OSPF6_LSTYPE_UBIT_MASK 0x8000 | |
68 | #define OSPF6_LSTYPE_SCOPE_MASK 0x6000 | |
508e53e2 | 69 | #define OSPF6_LSTYPE_FCODE_MASK 0x1fff |
718e3744 | 70 | |
508e53e2 | 71 | /* LSA scope */ |
6452df09 | 72 | #define OSPF6_SCOPE_LINKLOCAL 0x0000 |
73 | #define OSPF6_SCOPE_AREA 0x2000 | |
74 | #define OSPF6_SCOPE_AS 0x4000 | |
75 | #define OSPF6_SCOPE_RESERVED 0x6000 | |
718e3744 | 76 | |
6452df09 | 77 | /* XXX U-bit handling should be treated here */ |
508e53e2 | 78 | #define OSPF6_LSA_SCOPE(type) \ |
79 | (ntohs (type) & OSPF6_LSTYPE_SCOPE_MASK) | |
718e3744 | 80 | |
81 | /* LSA Header */ | |
abc7ef44 | 82 | #define OSPF6_LSA_HEADER_SIZE 20U |
718e3744 | 83 | struct ospf6_lsa_header |
718e3744 | 84 | { |
85 | u_int16_t age; /* LS age */ | |
86 | u_int16_t type; /* LS type */ | |
87 | u_int32_t id; /* Link State ID */ | |
88 | u_int32_t adv_router; /* Advertising Router */ | |
89 | u_int32_t seqnum; /* LS sequence number */ | |
90 | u_int16_t checksum; /* LS checksum */ | |
91 | u_int16_t length; /* LSA length */ | |
92 | }; | |
93 | ||
508e53e2 | 94 | #define OSPF6_LSA_HEADER_END(h) \ |
95 | ((caddr_t)(h) + sizeof (struct ospf6_lsa_header)) | |
96 | #define OSPF6_LSA_SIZE(h) \ | |
97 | (ntohs (((struct ospf6_lsa_header *) (h))->length)) | |
98 | #define OSPF6_LSA_END(h) \ | |
99 | ((caddr_t)(h) + ntohs (((struct ospf6_lsa_header *) (h))->length)) | |
100 | #define OSPF6_LSA_IS_TYPE(t, L) \ | |
101 | ((L)->header->type == htons (OSPF6_LSTYPE_ ## t) ? 1 : 0) | |
102 | #define OSPF6_LSA_IS_SAME(L1, L2) \ | |
103 | ((L1)->header->adv_router == (L2)->header->adv_router && \ | |
104 | (L1)->header->id == (L2)->header->id && \ | |
105 | (L1)->header->type == (L2)->header->type) | |
106 | #define OSPF6_LSA_IS_MATCH(t, i, a, L) \ | |
107 | ((L)->header->adv_router == (a) && (L)->header->id == (i) && \ | |
108 | (L)->header->type == (t)) | |
109 | #define OSPF6_LSA_IS_DIFFER(L1, L2) ospf6_lsa_is_differ (L1, L2) | |
8551e6da | 110 | #define OSPF6_LSA_IS_MAXAGE(L) (ospf6_lsa_age_current (L) == OSPF_LSA_MAXAGE) |
508e53e2 | 111 | #define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2) |
3b220289 DD |
112 | #define OSPF6_LSA_IS_SEQWRAP(L) ((L)->header->seqnum == htonl(OSPF_MAX_SEQUENCE_NUMBER + 1)) |
113 | ||
718e3744 | 114 | |
115 | struct ospf6_lsa | |
116 | { | |
6452df09 | 117 | char name[64]; /* dump string */ |
718e3744 | 118 | |
a765eb93 | 119 | struct route_node *rn; |
718e3744 | 120 | |
6452df09 | 121 | unsigned char lock; /* reference counter */ |
122 | unsigned char flag; /* special meaning (e.g. floodback) */ | |
718e3744 | 123 | |
6452df09 | 124 | struct timeval birth; /* tv_sec when LS age 0 */ |
6452df09 | 125 | struct timeval originated; /* used by MinLSInterval check */ |
ccb59b11 | 126 | struct timeval received; /* used by MinLSArrival check */ |
127 | struct timeval installed; | |
718e3744 | 128 | |
6452df09 | 129 | struct thread *expire; |
130 | struct thread *refresh; /* For self-originated LSA */ | |
718e3744 | 131 | |
6452df09 | 132 | int retrans_count; |
133 | ||
6452df09 | 134 | struct ospf6_lsdb *lsdb; |
718e3744 | 135 | |
508e53e2 | 136 | /* lsa instance */ |
137 | struct ospf6_lsa_header *header; | |
718e3744 | 138 | }; |
139 | ||
6452df09 | 140 | #define OSPF6_LSA_HEADERONLY 0x01 |
141 | #define OSPF6_LSA_FLOODBACK 0x02 | |
142 | #define OSPF6_LSA_DUPLICATE 0x04 | |
143 | #define OSPF6_LSA_IMPLIEDACK 0x08 | |
ca1f4309 | 144 | #define OSPF6_LSA_UNAPPROVED 0x10 |
3b220289 | 145 | #define OSPF6_LSA_SEQWRAPPED 0x20 |
508e53e2 | 146 | |
6452df09 | 147 | struct ospf6_lsa_handler |
508e53e2 | 148 | { |
1e05838a | 149 | u_int16_t type; /* host byte order */ |
0c083ee9 | 150 | const char *name; |
e68a6767 | 151 | const char *short_name; |
508e53e2 | 152 | int (*show) (struct vty *, struct ospf6_lsa *); |
e68a6767 | 153 | char *(*get_prefix_str) (struct ospf6_lsa *, char *buf, int buflen, int pos); |
1e05838a | 154 | u_char debug; |
508e53e2 | 155 | }; |
156 | ||
2680aa2b | 157 | extern struct ospf6_lsa_handler unknown_handler; |
158 | #define OSPF6_LSA_IS_KNOWN(type) \ | |
159 | (ospf6_get_lsa_handler (type) != &unknown_handler ? 1 : 0) | |
160 | ||
4dfd8aff DW |
161 | extern vector ospf6_lsa_handler_vector; |
162 | ||
508e53e2 | 163 | /* Macro for LSA Origination */ |
1e05838a | 164 | /* addr is (struct prefix *) */ |
165 | #define CONTINUE_IF_ADDRESS_LINKLOCAL(debug,addr) \ | |
508e53e2 | 166 | if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6)) \ |
167 | { \ | |
4690c7d7 | 168 | char buf[PREFIX2STR_BUFFER]; \ |
508e53e2 | 169 | prefix2str (addr, buf, sizeof (buf)); \ |
1e05838a | 170 | if (debug) \ |
d1db06fa | 171 | zlog_debug ("Filter out Linklocal: %s", buf); \ |
508e53e2 | 172 | continue; \ |
718e3744 | 173 | } |
174 | ||
1e05838a | 175 | #define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug,addr) \ |
508e53e2 | 176 | if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6)) \ |
177 | { \ | |
4690c7d7 | 178 | char buf[PREFIX2STR_BUFFER]; \ |
508e53e2 | 179 | prefix2str (addr, buf, sizeof (buf)); \ |
1e05838a | 180 | if (debug) \ |
d1db06fa | 181 | zlog_debug ("Filter out Unspecified: %s", buf);\ |
508e53e2 | 182 | continue; \ |
718e3744 | 183 | } |
508e53e2 | 184 | |
1e05838a | 185 | #define CONTINUE_IF_ADDRESS_LOOPBACK(debug,addr) \ |
508e53e2 | 186 | if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6)) \ |
187 | { \ | |
4690c7d7 | 188 | char buf[PREFIX2STR_BUFFER]; \ |
508e53e2 | 189 | prefix2str (addr, buf, sizeof (buf)); \ |
1e05838a | 190 | if (debug) \ |
d1db06fa | 191 | zlog_debug ("Filter out Loopback: %s", buf); \ |
508e53e2 | 192 | continue; \ |
718e3744 | 193 | } |
508e53e2 | 194 | |
1e05838a | 195 | #define CONTINUE_IF_ADDRESS_V4COMPAT(debug,addr) \ |
508e53e2 | 196 | if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6)) \ |
197 | { \ | |
4690c7d7 | 198 | char buf[PREFIX2STR_BUFFER]; \ |
508e53e2 | 199 | prefix2str (addr, buf, sizeof (buf)); \ |
1e05838a | 200 | if (debug) \ |
d1db06fa | 201 | zlog_debug ("Filter out V4Compat: %s", buf); \ |
508e53e2 | 202 | continue; \ |
718e3744 | 203 | } |
204 | ||
1e05838a | 205 | #define CONTINUE_IF_ADDRESS_V4MAPPED(debug,addr) \ |
508e53e2 | 206 | if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6)) \ |
207 | { \ | |
4690c7d7 | 208 | char buf[PREFIX2STR_BUFFER]; \ |
508e53e2 | 209 | prefix2str (addr, buf, sizeof (buf)); \ |
1e05838a | 210 | if (debug) \ |
d1db06fa | 211 | zlog_debug ("Filter out V4Mapped: %s", buf); \ |
508e53e2 | 212 | continue; \ |
213 | } | |
718e3744 | 214 | |
6b0655a2 | 215 | |
718e3744 | 216 | /* Function Prototypes */ |
6ac29a51 | 217 | extern const char *ospf6_lstype_name (u_int16_t type); |
e68a6767 | 218 | extern const char *ospf6_lstype_short_name (u_int16_t type); |
6ac29a51 PJ |
219 | extern u_char ospf6_lstype_debug (u_int16_t type); |
220 | extern int ospf6_lsa_is_differ (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
221 | extern int ospf6_lsa_is_changed (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
222 | extern u_int16_t ospf6_lsa_age_current (struct ospf6_lsa *); | |
223 | extern void ospf6_lsa_age_update_to_send (struct ospf6_lsa *, u_int32_t); | |
224 | extern void ospf6_lsa_premature_aging (struct ospf6_lsa *); | |
225 | extern int ospf6_lsa_compare (struct ospf6_lsa *, struct ospf6_lsa *); | |
226 | ||
227 | extern char *ospf6_lsa_printbuf (struct ospf6_lsa *lsa, char *buf, int size); | |
228 | extern void ospf6_lsa_header_print_raw (struct ospf6_lsa_header *header); | |
229 | extern void ospf6_lsa_header_print (struct ospf6_lsa *lsa); | |
230 | extern void ospf6_lsa_show_summary_header (struct vty *vty); | |
231 | extern void ospf6_lsa_show_summary (struct vty *vty, struct ospf6_lsa *lsa); | |
232 | extern void ospf6_lsa_show_dump (struct vty *vty, struct ospf6_lsa *lsa); | |
233 | extern void ospf6_lsa_show_internal (struct vty *vty, struct ospf6_lsa *lsa); | |
234 | extern void ospf6_lsa_show (struct vty *vty, struct ospf6_lsa *lsa); | |
235 | ||
236 | extern struct ospf6_lsa *ospf6_lsa_create (struct ospf6_lsa_header *header); | |
237 | extern struct ospf6_lsa *ospf6_lsa_create_headeronly (struct ospf6_lsa_header *header); | |
238 | extern void ospf6_lsa_delete (struct ospf6_lsa *lsa); | |
239 | extern struct ospf6_lsa *ospf6_lsa_copy (struct ospf6_lsa *); | |
240 | ||
241 | extern void ospf6_lsa_lock (struct ospf6_lsa *); | |
242 | extern void ospf6_lsa_unlock (struct ospf6_lsa *); | |
243 | ||
244 | extern int ospf6_lsa_expire (struct thread *); | |
245 | extern int ospf6_lsa_refresh (struct thread *); | |
246 | ||
247 | extern unsigned short ospf6_lsa_checksum (struct ospf6_lsa_header *); | |
d8a4e42b | 248 | extern int ospf6_lsa_checksum_valid (struct ospf6_lsa_header *); |
6ac29a51 PJ |
249 | extern int ospf6_lsa_prohibited_duration (u_int16_t type, u_int32_t id, |
250 | u_int32_t adv_router, void *scope); | |
251 | ||
252 | extern void ospf6_install_lsa_handler (struct ospf6_lsa_handler *handler); | |
253 | extern struct ospf6_lsa_handler *ospf6_get_lsa_handler (u_int16_t type); | |
254 | ||
255 | extern void ospf6_lsa_init (void); | |
ae2254aa | 256 | extern void ospf6_lsa_terminate (void); |
6ac29a51 PJ |
257 | |
258 | extern int config_write_ospf6_debug_lsa (struct vty *vty); | |
259 | extern void install_element_ospf6_debug_lsa (void); | |
718e3744 | 260 | |
261 | #endif /* OSPF6_LSA_H */ | |
262 |