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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 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #ifndef OSPF6_LSA_H | |
22 | #define OSPF6_LSA_H | |
23 | ||
508e53e2 | 24 | /* Debug option */ |
1e05838a | 25 | #define OSPF6_LSA_DEBUG 0x01 |
26 | #define OSPF6_LSA_DEBUG_ORIGINATE 0x02 | |
27 | #define OSPF6_LSA_DEBUG_EXAMIN 0x04 | |
28 | #define OSPF6_LSA_DEBUG_FLOOD 0x08 | |
29 | ||
d62a17ae | 30 | #define IS_OSPF6_DEBUG_LSA(name) \ |
31 | (ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) & OSPF6_LSA_DEBUG) | |
32 | #define IS_OSPF6_DEBUG_ORIGINATE(name) \ | |
33 | (ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) \ | |
34 | & OSPF6_LSA_DEBUG_ORIGINATE) | |
35 | #define IS_OSPF6_DEBUG_EXAMIN(name) \ | |
36 | (ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) \ | |
37 | & OSPF6_LSA_DEBUG_EXAMIN) | |
38 | #define IS_OSPF6_DEBUG_LSA_TYPE(type) \ | |
39 | (ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG) | |
40 | #define IS_OSPF6_DEBUG_ORIGINATE_TYPE(type) \ | |
41 | (ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_ORIGINATE) | |
42 | #define IS_OSPF6_DEBUG_EXAMIN_TYPE(type) \ | |
43 | (ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_EXAMIN) | |
44 | #define IS_OSPF6_DEBUG_FLOOD_TYPE(type) \ | |
45 | (ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_FLOOD) | |
718e3744 | 46 | |
47 | /* LSA definition */ | |
48 | ||
508e53e2 | 49 | #define OSPF6_MAX_LSASIZE 4096 |
718e3744 | 50 | |
51 | /* Type */ | |
508e53e2 | 52 | #define OSPF6_LSTYPE_UNKNOWN 0x0000 |
53 | #define OSPF6_LSTYPE_ROUTER 0x2001 | |
54 | #define OSPF6_LSTYPE_NETWORK 0x2002 | |
55 | #define OSPF6_LSTYPE_INTER_PREFIX 0x2003 | |
56 | #define OSPF6_LSTYPE_INTER_ROUTER 0x2004 | |
57 | #define OSPF6_LSTYPE_AS_EXTERNAL 0x4005 | |
58 | #define OSPF6_LSTYPE_GROUP_MEMBERSHIP 0x2006 | |
59 | #define OSPF6_LSTYPE_TYPE_7 0x2007 | |
60 | #define OSPF6_LSTYPE_LINK 0x0008 | |
61 | #define OSPF6_LSTYPE_INTRA_PREFIX 0x2009 | |
62 | #define OSPF6_LSTYPE_SIZE 0x000a | |
718e3744 | 63 | |
64 | /* Masks for LS Type : RFC 2740 A.4.2.1 "LS type" */ | |
65 | #define OSPF6_LSTYPE_UBIT_MASK 0x8000 | |
66 | #define OSPF6_LSTYPE_SCOPE_MASK 0x6000 | |
508e53e2 | 67 | #define OSPF6_LSTYPE_FCODE_MASK 0x1fff |
718e3744 | 68 | |
508e53e2 | 69 | /* LSA scope */ |
6452df09 | 70 | #define OSPF6_SCOPE_LINKLOCAL 0x0000 |
71 | #define OSPF6_SCOPE_AREA 0x2000 | |
72 | #define OSPF6_SCOPE_AS 0x4000 | |
73 | #define OSPF6_SCOPE_RESERVED 0x6000 | |
718e3744 | 74 | |
6452df09 | 75 | /* XXX U-bit handling should be treated here */ |
d62a17ae | 76 | #define OSPF6_LSA_SCOPE(type) (ntohs(type) & OSPF6_LSTYPE_SCOPE_MASK) |
718e3744 | 77 | |
78 | /* LSA Header */ | |
abc7ef44 | 79 | #define OSPF6_LSA_HEADER_SIZE 20U |
d62a17ae | 80 | struct ospf6_lsa_header { |
81 | u_int16_t age; /* LS age */ | |
82 | u_int16_t type; /* LS type */ | |
83 | u_int32_t id; /* Link State ID */ | |
84 | u_int32_t adv_router; /* Advertising Router */ | |
85 | u_int32_t seqnum; /* LS sequence number */ | |
86 | u_int16_t checksum; /* LS checksum */ | |
87 | u_int16_t length; /* LSA length */ | |
718e3744 | 88 | }; |
89 | ||
d62a17ae | 90 | #define OSPF6_LSA_HEADER_END(h) ((caddr_t)(h) + sizeof(struct ospf6_lsa_header)) |
91 | #define OSPF6_LSA_SIZE(h) (ntohs(((struct ospf6_lsa_header *)(h))->length)) | |
92 | #define OSPF6_LSA_END(h) \ | |
93 | ((caddr_t)(h) + ntohs(((struct ospf6_lsa_header *)(h))->length)) | |
94 | #define OSPF6_LSA_IS_TYPE(t, L) \ | |
95 | ((L)->header->type == htons(OSPF6_LSTYPE_##t) ? 1 : 0) | |
96 | #define OSPF6_LSA_IS_SAME(L1, L2) \ | |
97 | ((L1)->header->adv_router == (L2)->header->adv_router \ | |
98 | && (L1)->header->id == (L2)->header->id \ | |
99 | && (L1)->header->type == (L2)->header->type) | |
100 | #define OSPF6_LSA_IS_MATCH(t, i, a, L) \ | |
101 | ((L)->header->adv_router == (a) && (L)->header->id == (i) \ | |
102 | && (L)->header->type == (t)) | |
508e53e2 | 103 | #define OSPF6_LSA_IS_DIFFER(L1, L2) ospf6_lsa_is_differ (L1, L2) |
8551e6da | 104 | #define OSPF6_LSA_IS_MAXAGE(L) (ospf6_lsa_age_current (L) == OSPF_LSA_MAXAGE) |
508e53e2 | 105 | #define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2) |
3b220289 DD |
106 | #define OSPF6_LSA_IS_SEQWRAP(L) ((L)->header->seqnum == htonl(OSPF_MAX_SEQUENCE_NUMBER + 1)) |
107 | ||
d62a17ae | 108 | struct ospf6_lsa { |
109 | char name[64]; /* dump string */ | |
718e3744 | 110 | |
d62a17ae | 111 | struct route_node *rn; |
718e3744 | 112 | |
d62a17ae | 113 | unsigned char lock; /* reference counter */ |
114 | unsigned char flag; /* special meaning (e.g. floodback) */ | |
718e3744 | 115 | |
d62a17ae | 116 | struct timeval birth; /* tv_sec when LS age 0 */ |
117 | struct timeval originated; /* used by MinLSInterval check */ | |
118 | struct timeval received; /* used by MinLSArrival check */ | |
119 | struct timeval installed; | |
718e3744 | 120 | |
d62a17ae | 121 | struct thread *expire; |
122 | struct thread *refresh; /* For self-originated LSA */ | |
718e3744 | 123 | |
d62a17ae | 124 | int retrans_count; |
718e3744 | 125 | |
d62a17ae | 126 | struct ospf6_lsdb *lsdb; |
6452df09 | 127 | |
d62a17ae | 128 | /* lsa instance */ |
129 | struct ospf6_lsa_header *header; | |
718e3744 | 130 | }; |
131 | ||
6452df09 | 132 | #define OSPF6_LSA_HEADERONLY 0x01 |
133 | #define OSPF6_LSA_FLOODBACK 0x02 | |
134 | #define OSPF6_LSA_DUPLICATE 0x04 | |
135 | #define OSPF6_LSA_IMPLIEDACK 0x08 | |
ca1f4309 | 136 | #define OSPF6_LSA_UNAPPROVED 0x10 |
3b220289 | 137 | #define OSPF6_LSA_SEQWRAPPED 0x20 |
508e53e2 | 138 | |
d62a17ae | 139 | struct ospf6_lsa_handler { |
140 | u_int16_t type; /* host byte order */ | |
141 | const char *name; | |
142 | const char *short_name; | |
143 | int (*show)(struct vty *, struct ospf6_lsa *); | |
144 | char *(*get_prefix_str)(struct ospf6_lsa *, char *buf, int buflen, | |
145 | int pos); | |
146 | u_char debug; | |
508e53e2 | 147 | }; |
148 | ||
2680aa2b | 149 | extern struct ospf6_lsa_handler unknown_handler; |
d62a17ae | 150 | #define OSPF6_LSA_IS_KNOWN(type) \ |
151 | (ospf6_get_lsa_handler(type) != &unknown_handler ? 1 : 0) | |
2680aa2b | 152 | |
4dfd8aff DW |
153 | extern vector ospf6_lsa_handler_vector; |
154 | ||
508e53e2 | 155 | /* Macro for LSA Origination */ |
1e05838a | 156 | /* addr is (struct prefix *) */ |
d62a17ae | 157 | #define CONTINUE_IF_ADDRESS_LINKLOCAL(debug, addr) \ |
158 | if (IN6_IS_ADDR_LINKLOCAL(&(addr)->u.prefix6)) { \ | |
159 | char buf[PREFIX2STR_BUFFER]; \ | |
160 | prefix2str(addr, buf, sizeof(buf)); \ | |
161 | if (debug) \ | |
162 | zlog_debug("Filter out Linklocal: %s", buf); \ | |
163 | continue; \ | |
164 | } | |
165 | ||
166 | #define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug, addr) \ | |
167 | if (IN6_IS_ADDR_UNSPECIFIED(&(addr)->u.prefix6)) { \ | |
168 | char buf[PREFIX2STR_BUFFER]; \ | |
169 | prefix2str(addr, buf, sizeof(buf)); \ | |
170 | if (debug) \ | |
171 | zlog_debug("Filter out Unspecified: %s", buf); \ | |
172 | continue; \ | |
173 | } | |
174 | ||
175 | #define CONTINUE_IF_ADDRESS_LOOPBACK(debug, addr) \ | |
176 | if (IN6_IS_ADDR_LOOPBACK(&(addr)->u.prefix6)) { \ | |
177 | char buf[PREFIX2STR_BUFFER]; \ | |
178 | prefix2str(addr, buf, sizeof(buf)); \ | |
179 | if (debug) \ | |
180 | zlog_debug("Filter out Loopback: %s", buf); \ | |
181 | continue; \ | |
182 | } | |
183 | ||
184 | #define CONTINUE_IF_ADDRESS_V4COMPAT(debug, addr) \ | |
185 | if (IN6_IS_ADDR_V4COMPAT(&(addr)->u.prefix6)) { \ | |
186 | char buf[PREFIX2STR_BUFFER]; \ | |
187 | prefix2str(addr, buf, sizeof(buf)); \ | |
188 | if (debug) \ | |
189 | zlog_debug("Filter out V4Compat: %s", buf); \ | |
190 | continue; \ | |
191 | } | |
192 | ||
193 | #define CONTINUE_IF_ADDRESS_V4MAPPED(debug, addr) \ | |
194 | if (IN6_IS_ADDR_V4MAPPED(&(addr)->u.prefix6)) { \ | |
195 | char buf[PREFIX2STR_BUFFER]; \ | |
196 | prefix2str(addr, buf, sizeof(buf)); \ | |
197 | if (debug) \ | |
198 | zlog_debug("Filter out V4Mapped: %s", buf); \ | |
199 | continue; \ | |
200 | } | |
718e3744 | 201 | |
6b0655a2 | 202 | |
718e3744 | 203 | /* Function Prototypes */ |
d62a17ae | 204 | extern const char *ospf6_lstype_name(u_int16_t type); |
205 | extern const char *ospf6_lstype_short_name(u_int16_t type); | |
206 | extern u_char ospf6_lstype_debug(u_int16_t type); | |
207 | extern int ospf6_lsa_is_differ(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
208 | extern int ospf6_lsa_is_changed(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2); | |
209 | extern u_int16_t ospf6_lsa_age_current(struct ospf6_lsa *); | |
210 | extern void ospf6_lsa_age_update_to_send(struct ospf6_lsa *, u_int32_t); | |
211 | extern void ospf6_lsa_premature_aging(struct ospf6_lsa *); | |
212 | extern int ospf6_lsa_compare(struct ospf6_lsa *, struct ospf6_lsa *); | |
213 | ||
214 | extern char *ospf6_lsa_printbuf(struct ospf6_lsa *lsa, char *buf, int size); | |
215 | extern void ospf6_lsa_header_print_raw(struct ospf6_lsa_header *header); | |
216 | extern void ospf6_lsa_header_print(struct ospf6_lsa *lsa); | |
217 | extern void ospf6_lsa_show_summary_header(struct vty *vty); | |
218 | extern void ospf6_lsa_show_summary(struct vty *vty, struct ospf6_lsa *lsa); | |
219 | extern void ospf6_lsa_show_dump(struct vty *vty, struct ospf6_lsa *lsa); | |
220 | extern void ospf6_lsa_show_internal(struct vty *vty, struct ospf6_lsa *lsa); | |
221 | extern void ospf6_lsa_show(struct vty *vty, struct ospf6_lsa *lsa); | |
222 | ||
223 | extern struct ospf6_lsa *ospf6_lsa_create(struct ospf6_lsa_header *header); | |
224 | extern struct ospf6_lsa * | |
225 | ospf6_lsa_create_headeronly(struct ospf6_lsa_header *header); | |
226 | extern void ospf6_lsa_delete(struct ospf6_lsa *lsa); | |
227 | extern struct ospf6_lsa *ospf6_lsa_copy(struct ospf6_lsa *); | |
228 | ||
229 | extern void ospf6_lsa_lock(struct ospf6_lsa *); | |
230 | extern void ospf6_lsa_unlock(struct ospf6_lsa *); | |
231 | ||
232 | extern int ospf6_lsa_expire(struct thread *); | |
233 | extern int ospf6_lsa_refresh(struct thread *); | |
234 | ||
235 | extern unsigned short ospf6_lsa_checksum(struct ospf6_lsa_header *); | |
236 | extern int ospf6_lsa_checksum_valid(struct ospf6_lsa_header *); | |
237 | extern int ospf6_lsa_prohibited_duration(u_int16_t type, u_int32_t id, | |
238 | u_int32_t adv_router, void *scope); | |
239 | ||
240 | extern void ospf6_install_lsa_handler(struct ospf6_lsa_handler *handler); | |
241 | extern struct ospf6_lsa_handler *ospf6_get_lsa_handler(u_int16_t type); | |
242 | ||
243 | extern void ospf6_lsa_init(void); | |
244 | extern void ospf6_lsa_terminate(void); | |
245 | ||
246 | extern int config_write_ospf6_debug_lsa(struct vty *vty); | |
247 | extern void install_element_ospf6_debug_lsa(void); | |
718e3744 | 248 | |
249 | #endif /* OSPF6_LSA_H */ |