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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) | |
110 | #define OSPF6_LSA_IS_MAXAGE(L) (ospf6_lsa_age_current (L) == MAXAGE) | |
111 | #define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2) | |
718e3744 | 112 | |
113 | struct ospf6_lsa | |
114 | { | |
6452df09 | 115 | char name[64]; /* dump string */ |
718e3744 | 116 | |
6452df09 | 117 | struct ospf6_lsa *prev; |
118 | struct ospf6_lsa *next; | |
718e3744 | 119 | |
6452df09 | 120 | unsigned char lock; /* reference counter */ |
121 | unsigned char flag; /* special meaning (e.g. floodback) */ | |
718e3744 | 122 | |
6452df09 | 123 | struct timeval birth; /* tv_sec when LS age 0 */ |
6452df09 | 124 | struct timeval originated; /* used by MinLSInterval check */ |
ccb59b11 | 125 | struct timeval received; /* used by MinLSArrival check */ |
126 | struct timeval installed; | |
718e3744 | 127 | |
6452df09 | 128 | struct thread *expire; |
129 | struct thread *refresh; /* For self-originated LSA */ | |
718e3744 | 130 | |
6452df09 | 131 | int retrans_count; |
132 | ||
6452df09 | 133 | struct ospf6_lsdb *lsdb; |
718e3744 | 134 | |
508e53e2 | 135 | /* lsa instance */ |
136 | struct ospf6_lsa_header *header; | |
718e3744 | 137 | }; |
138 | ||
6452df09 | 139 | #define OSPF6_LSA_HEADERONLY 0x01 |
140 | #define OSPF6_LSA_FLOODBACK 0x02 | |
141 | #define OSPF6_LSA_DUPLICATE 0x04 | |
142 | #define OSPF6_LSA_IMPLIEDACK 0x08 | |
508e53e2 | 143 | |
6452df09 | 144 | struct ospf6_lsa_handler |
508e53e2 | 145 | { |
1e05838a | 146 | u_int16_t type; /* host byte order */ |
0c083ee9 | 147 | const char *name; |
508e53e2 | 148 | int (*show) (struct vty *, struct ospf6_lsa *); |
1e05838a | 149 | u_char debug; |
508e53e2 | 150 | }; |
151 | ||
2680aa2b | 152 | extern struct ospf6_lsa_handler unknown_handler; |
153 | #define OSPF6_LSA_IS_KNOWN(type) \ | |
154 | (ospf6_get_lsa_handler (type) != &unknown_handler ? 1 : 0) | |
155 | ||
508e53e2 | 156 | /* Macro for LSA Origination */ |
1e05838a | 157 | /* addr is (struct prefix *) */ |
158 | #define CONTINUE_IF_ADDRESS_LINKLOCAL(debug,addr) \ | |
508e53e2 | 159 | if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6)) \ |
160 | { \ | |
161 | char buf[64]; \ | |
162 | prefix2str (addr, buf, sizeof (buf)); \ | |
1e05838a | 163 | if (debug) \ |
d1db06fa | 164 | zlog_debug ("Filter out Linklocal: %s", buf); \ |
508e53e2 | 165 | continue; \ |
718e3744 | 166 | } |
167 | ||
1e05838a | 168 | #define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug,addr) \ |
508e53e2 | 169 | if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6)) \ |
170 | { \ | |
171 | char buf[64]; \ | |
172 | prefix2str (addr, buf, sizeof (buf)); \ | |
1e05838a | 173 | if (debug) \ |
d1db06fa | 174 | zlog_debug ("Filter out Unspecified: %s", buf);\ |
508e53e2 | 175 | continue; \ |
718e3744 | 176 | } |
508e53e2 | 177 | |
1e05838a | 178 | #define CONTINUE_IF_ADDRESS_LOOPBACK(debug,addr) \ |
508e53e2 | 179 | if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6)) \ |
180 | { \ | |
181 | char buf[64]; \ | |
182 | prefix2str (addr, buf, sizeof (buf)); \ | |
1e05838a | 183 | if (debug) \ |
d1db06fa | 184 | zlog_debug ("Filter out Loopback: %s", buf); \ |
508e53e2 | 185 | continue; \ |
718e3744 | 186 | } |
508e53e2 | 187 | |
1e05838a | 188 | #define CONTINUE_IF_ADDRESS_V4COMPAT(debug,addr) \ |
508e53e2 | 189 | if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6)) \ |
190 | { \ | |
191 | char buf[64]; \ | |
192 | prefix2str (addr, buf, sizeof (buf)); \ | |
1e05838a | 193 | if (debug) \ |
d1db06fa | 194 | zlog_debug ("Filter out V4Compat: %s", buf); \ |
508e53e2 | 195 | continue; \ |
718e3744 | 196 | } |
197 | ||
1e05838a | 198 | #define CONTINUE_IF_ADDRESS_V4MAPPED(debug,addr) \ |
508e53e2 | 199 | if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6)) \ |
200 | { \ | |
201 | char buf[64]; \ | |
202 | prefix2str (addr, buf, sizeof (buf)); \ | |
1e05838a | 203 | if (debug) \ |
d1db06fa | 204 | zlog_debug ("Filter out V4Mapped: %s", buf); \ |
508e53e2 | 205 | continue; \ |
206 | } | |
718e3744 | 207 | |
508e53e2 | 208 | \f |
718e3744 | 209 | /* Function Prototypes */ |
6ac29a51 PJ |
210 | extern const char *ospf6_lstype_name (u_int16_t type); |
211 | extern u_char ospf6_lstype_debug (u_int16_t type); | |
212 | extern int ospf6_lsa_is_differ (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
213 | extern int ospf6_lsa_is_changed (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
214 | extern u_int16_t ospf6_lsa_age_current (struct ospf6_lsa *); | |
215 | extern void ospf6_lsa_age_update_to_send (struct ospf6_lsa *, u_int32_t); | |
216 | extern void ospf6_lsa_premature_aging (struct ospf6_lsa *); | |
217 | extern int ospf6_lsa_compare (struct ospf6_lsa *, struct ospf6_lsa *); | |
218 | ||
219 | extern char *ospf6_lsa_printbuf (struct ospf6_lsa *lsa, char *buf, int size); | |
220 | extern void ospf6_lsa_header_print_raw (struct ospf6_lsa_header *header); | |
221 | extern void ospf6_lsa_header_print (struct ospf6_lsa *lsa); | |
222 | extern void ospf6_lsa_show_summary_header (struct vty *vty); | |
223 | extern void ospf6_lsa_show_summary (struct vty *vty, struct ospf6_lsa *lsa); | |
224 | extern void ospf6_lsa_show_dump (struct vty *vty, struct ospf6_lsa *lsa); | |
225 | extern void ospf6_lsa_show_internal (struct vty *vty, struct ospf6_lsa *lsa); | |
226 | extern void ospf6_lsa_show (struct vty *vty, struct ospf6_lsa *lsa); | |
227 | ||
228 | extern struct ospf6_lsa *ospf6_lsa_create (struct ospf6_lsa_header *header); | |
229 | extern struct ospf6_lsa *ospf6_lsa_create_headeronly (struct ospf6_lsa_header *header); | |
230 | extern void ospf6_lsa_delete (struct ospf6_lsa *lsa); | |
231 | extern struct ospf6_lsa *ospf6_lsa_copy (struct ospf6_lsa *); | |
232 | ||
233 | extern void ospf6_lsa_lock (struct ospf6_lsa *); | |
234 | extern void ospf6_lsa_unlock (struct ospf6_lsa *); | |
235 | ||
236 | extern int ospf6_lsa_expire (struct thread *); | |
237 | extern int ospf6_lsa_refresh (struct thread *); | |
238 | ||
239 | extern unsigned short ospf6_lsa_checksum (struct ospf6_lsa_header *); | |
240 | extern int ospf6_lsa_prohibited_duration (u_int16_t type, u_int32_t id, | |
241 | u_int32_t adv_router, void *scope); | |
242 | ||
243 | extern void ospf6_install_lsa_handler (struct ospf6_lsa_handler *handler); | |
244 | extern struct ospf6_lsa_handler *ospf6_get_lsa_handler (u_int16_t type); | |
245 | ||
246 | extern void ospf6_lsa_init (void); | |
ae2254aa | 247 | extern void ospf6_lsa_terminate (void); |
6ac29a51 PJ |
248 | extern void ospf6_lsa_cmd_init (void); |
249 | ||
250 | extern int config_write_ospf6_debug_lsa (struct vty *vty); | |
251 | extern void install_element_ospf6_debug_lsa (void); | |
718e3744 | 252 | |
253 | #endif /* OSPF6_LSA_H */ | |
254 |