1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2003 Yasuhiro Ohara
*/
#ifndef OSPF6_LSA_H
#define OSPF6_LSA_H
#include "ospf6_top.h"
#include "lib/json.h"
/* Debug option */
#define OSPF6_LSA_DEBUG 0x01
#define OSPF6_LSA_DEBUG_ORIGINATE 0x02
#define OSPF6_LSA_DEBUG_EXAMIN 0x04
#define OSPF6_LSA_DEBUG_FLOOD 0x08
#define OSPF6_LSA_DEBUG_ALL \
(OSPF6_LSA_DEBUG | OSPF6_LSA_DEBUG_ORIGINATE | OSPF6_LSA_DEBUG_EXAMIN \
| OSPF6_LSA_DEBUG_FLOOD)
#define OSPF6_LSA_DEBUG_AGGR 0x10
/* OSPF LSA Default metric values */
#define DEFAULT_DEFAULT_METRIC 20
#define DEFAULT_DEFAULT_ORIGINATE_METRIC 10
#define DEFAULT_DEFAULT_ALWAYS_METRIC 1
#define DEFAULT_METRIC_TYPE 2
#define IS_OSPF6_DEBUG_LSA(name) \
(ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) & OSPF6_LSA_DEBUG)
#define IS_OSPF6_DEBUG_ORIGINATE(name) \
(ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) \
& OSPF6_LSA_DEBUG_ORIGINATE)
#define IS_OSPF6_DEBUG_EXAMIN(name) \
(ospf6_lstype_debug(htons(OSPF6_LSTYPE_##name)) \
& OSPF6_LSA_DEBUG_EXAMIN)
#define IS_OSPF6_DEBUG_LSA_TYPE(type) \
(ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG)
#define IS_OSPF6_DEBUG_ORIGINATE_TYPE(type) \
(ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_ORIGINATE)
#define IS_OSPF6_DEBUG_EXAMIN_TYPE(type) \
(ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_EXAMIN)
#define IS_OSPF6_DEBUG_FLOOD_TYPE(type) \
(ospf6_lstype_debug(type) & OSPF6_LSA_DEBUG_FLOOD)
#define IS_OSPF6_DEBUG_AGGR \
(ospf6_lstype_debug(OSPF6_LSTYPE_AS_EXTERNAL) & OSPF6_LSA_DEBUG_AGGR) \
/* LSA definition */
#define OSPF6_MAX_LSASIZE 4096
/* Type */
#define OSPF6_LSTYPE_UNKNOWN 0x0000
#define OSPF6_LSTYPE_ROUTER 0x2001
#define OSPF6_LSTYPE_NETWORK 0x2002
#define OSPF6_LSTYPE_INTER_PREFIX 0x2003
#define OSPF6_LSTYPE_INTER_ROUTER 0x2004
#define OSPF6_LSTYPE_AS_EXTERNAL 0x4005
#define OSPF6_LSTYPE_GROUP_MEMBERSHIP 0x2006
#define OSPF6_LSTYPE_TYPE_7 0x2007
#define OSPF6_LSTYPE_LINK 0x0008
#define OSPF6_LSTYPE_INTRA_PREFIX 0x2009
#define OSPF6_LSTYPE_GRACE_LSA 0x000b
#define OSPF6_LSTYPE_SIZE 0x000c
/* Masks for LS Type : RFC 2740 A.4.2.1 "LS type" */
#define OSPF6_LSTYPE_UBIT_MASK 0x8000
#define OSPF6_LSTYPE_SCOPE_MASK 0x6000
#define OSPF6_LSTYPE_FCODE_MASK 0x1fff
/* LSA scope */
#define OSPF6_SCOPE_LINKLOCAL 0x0000
#define OSPF6_SCOPE_AREA 0x2000
#define OSPF6_SCOPE_AS 0x4000
#define OSPF6_SCOPE_RESERVED 0x6000
/* XXX U-bit handling should be treated here */
#define OSPF6_LSA_SCOPE(type) (ntohs(type) & OSPF6_LSTYPE_SCOPE_MASK)
/* LSA Header */
#define OSPF6_LSA_HEADER_SIZE 20U
struct ospf6_lsa_header {
uint16_t age; /* LS age */
uint16_t type; /* LS type */
in_addr_t id; /* Link State ID */
in_addr_t adv_router; /* Advertising Router */
uint32_t seqnum; /* LS sequence number */
uint16_t checksum; /* LS checksum */
uint16_t length; /* LSA length */
};
#define OSPF6_LSA_HEADER_END(h) ((caddr_t)(h) + sizeof(struct ospf6_lsa_header))
#define OSPF6_LSA_SIZE(h) (ntohs(((struct ospf6_lsa_header *)(h))->length))
#define OSPF6_LSA_END(h) \
((caddr_t)(h) + ntohs(((struct ospf6_lsa_header *)(h))->length))
#define OSPF6_LSA_IS_TYPE(t, L) \
((L)->header->type == htons(OSPF6_LSTYPE_##t) ? 1 : 0)
#define OSPF6_LSA_IS_SAME(L1, L2) \
((L1)->header->adv_router == (L2)->header->adv_router \
&& (L1)->header->id == (L2)->header->id \
&& (L1)->header->type == (L2)->header->type)
#define OSPF6_LSA_IS_MATCH(t, i, a, L) \
((L)->header->adv_router == (a) && (L)->header->id == (i) \
&& (L)->header->type == (t))
#define OSPF6_LSA_IS_DIFFER(L1, L2) ospf6_lsa_is_differ (L1, L2)
#define OSPF6_LSA_IS_MAXAGE(L) (ospf6_lsa_age_current (L) == OSPF_LSA_MAXAGE)
#define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2)
#define OSPF6_LSA_IS_SEQWRAP(L) ((L)->header->seqnum == htonl(OSPF_MAX_SEQUENCE_NUMBER + 1))
struct ospf6_lsa {
char name[64]; /* dump string */
struct route_node *rn;
unsigned char lock; /* reference counter */
unsigned char flag; /* special meaning (e.g. floodback) */
struct timeval birth; /* tv_sec when LS age 0 */
struct timeval originated; /* used by MinLSInterval check */
struct timeval received; /* used by MinLSArrival check */
struct timeval installed;
struct event *expire;
struct event *refresh; /* For self-originated LSA */
int retrans_count;
struct ospf6_lsdb *lsdb;
in_addr_t external_lsa_id;
/* lsa instance */
struct ospf6_lsa_header *header;
/*For topo chg detection in HELPER role*/
bool tobe_acknowledged;
};
#define OSPF6_LSA_HEADERONLY 0x01
#define OSPF6_LSA_FLOODBACK 0x02
#define OSPF6_LSA_DUPLICATE 0x04
#define OSPF6_LSA_IMPLIEDACK 0x08
#define OSPF6_LSA_UNAPPROVED 0x10
#define OSPF6_LSA_SEQWRAPPED 0x20
#define OSPF6_LSA_FLUSH 0x40
struct ospf6_lsa_handler {
uint16_t lh_type; /* host byte order */
const char *lh_name;
const char *lh_short_name;
int (*lh_show)(struct vty *, struct ospf6_lsa *, json_object *json_obj,
bool use_json);
char *(*lh_get_prefix_str)(struct ospf6_lsa *, char *buf, int buflen,
int pos);
uint8_t lh_debug;
};
#define OSPF6_LSA_IS_KNOWN(t) \
(ospf6_get_lsa_handler(t)->lh_type != OSPF6_LSTYPE_UNKNOWN ? 1 : 0)
/* Macro for LSA Origination */
/* addr is (struct prefix *) */
#define CONTINUE_IF_ADDRESS_LINKLOCAL(debug, addr) \
if (IN6_IS_ADDR_LINKLOCAL(&(addr)->u.prefix6)) { \
if (debug) \
zlog_debug("Filter out Linklocal: %pFX", addr); \
continue; \
}
#define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug, addr) \
if (IN6_IS_ADDR_UNSPECIFIED(&(addr)->u.prefix6)) { \
if (debug) \
zlog_debug("Filter out Unspecified: %pFX", addr); \
continue; \
}
#define CONTINUE_IF_ADDRESS_LOOPBACK(debug, addr) \
if (IN6_IS_ADDR_LOOPBACK(&(addr)->u.prefix6)) { \
if (debug) \
zlog_debug("Filter out Loopback: %pFX", addr); \
continue; \
}
#define CONTINUE_IF_ADDRESS_V4COMPAT(debug, addr) \
if (IN6_IS_ADDR_V4COMPAT(&(addr)->u.prefix6)) { \
if (debug) \
zlog_debug("Filter out V4Compat: %pFX", addr); \
continue; \
}
#define CONTINUE_IF_ADDRESS_V4MAPPED(debug, addr) \
if (IN6_IS_ADDR_V4MAPPED(&(addr)->u.prefix6)) { \
if (debug) \
zlog_debug("Filter out V4Mapped: %pFX", addr); \
continue; \
}
#define CHECK_LSA_TOPO_CHG_ELIGIBLE(type) \
((type == OSPF6_LSTYPE_ROUTER) \
|| (type == OSPF6_LSTYPE_NETWORK) \
|| (type == OSPF6_LSTYPE_INTER_PREFIX) \
|| (type == OSPF6_LSTYPE_INTER_ROUTER) \
|| (type == OSPF6_LSTYPE_AS_EXTERNAL) \
|| (type == OSPF6_LSTYPE_TYPE_7) \
|| (type == OSPF6_LSTYPE_INTRA_PREFIX))
/* Function Prototypes */
extern const char *ospf6_lstype_name(uint16_t type);
extern const char *ospf6_lstype_short_name(uint16_t type);
extern uint8_t ospf6_lstype_debug(uint16_t type);
extern int metric_type(struct ospf6 *ospf6, int type, uint8_t instance);
extern int metric_value(struct ospf6 *ospf6, int type, uint8_t instance);
extern int ospf6_lsa_is_differ(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
extern int ospf6_lsa_is_changed(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
extern uint16_t ospf6_lsa_age_current(struct ospf6_lsa *lsa);
extern void ospf6_lsa_age_update_to_send(struct ospf6_lsa *lsa,
uint32_t transdelay);
extern void ospf6_lsa_premature_aging(struct ospf6_lsa *lsa);
extern int ospf6_lsa_compare(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
extern char *ospf6_lsa_printbuf(struct ospf6_lsa *lsa, char *buf, int size);
extern void ospf6_lsa_header_print_raw(struct ospf6_lsa_header *header);
extern void ospf6_lsa_header_print(struct ospf6_lsa *lsa);
extern void ospf6_lsa_show_summary_header(struct vty *vty);
extern void ospf6_lsa_show_summary(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json, bool use_json);
extern void ospf6_lsa_show_dump(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json, bool use_json);
extern void ospf6_lsa_show_internal(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json, bool use_json);
extern void ospf6_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json, bool use_json);
extern struct ospf6_lsa *ospf6_lsa_alloc(size_t lsa_length);
extern struct ospf6_lsa *ospf6_lsa_create(struct ospf6_lsa_header *header);
extern struct ospf6_lsa *
ospf6_lsa_create_headeronly(struct ospf6_lsa_header *header);
extern void ospf6_lsa_delete(struct ospf6_lsa *lsa);
extern struct ospf6_lsa *ospf6_lsa_copy(struct ospf6_lsa *lsa);
extern struct ospf6_lsa *ospf6_lsa_lock(struct ospf6_lsa *lsa);
extern struct ospf6_lsa *ospf6_lsa_unlock(struct ospf6_lsa *lsa);
extern void ospf6_lsa_expire(struct event *thread);
extern void ospf6_lsa_refresh(struct event *thread);
extern unsigned short ospf6_lsa_checksum(struct ospf6_lsa_header *lsah);
extern int ospf6_lsa_checksum_valid(struct ospf6_lsa_header *lsah);
extern int ospf6_lsa_prohibited_duration(uint16_t type, uint32_t id,
uint32_t adv_router, void *scope);
extern void ospf6_install_lsa_handler(struct ospf6_lsa_handler *handler);
extern struct ospf6_lsa_handler *ospf6_get_lsa_handler(uint16_t type);
extern void ospf6_lsa_debug_set_all(bool val);
extern void ospf6_lsa_init(void);
extern void ospf6_lsa_terminate(void);
extern int config_write_ospf6_debug_lsa(struct vty *vty);
extern void install_element_ospf6_debug_lsa(void);
extern void ospf6_lsa_age_set(struct ospf6_lsa *lsa);
extern void ospf6_flush_self_originated_lsas_now(struct ospf6 *ospf6);
extern struct ospf6 *ospf6_get_by_lsdb(struct ospf6_lsa *lsa);
struct ospf6_lsa *ospf6_find_external_lsa(struct ospf6 *ospf6,
struct prefix *p);
#endif /* OSPF6_LSA_H */
|
