1: /*
2: * Copyright (C) 2003 Yasuhiro Ohara
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:
25: /* Debug option */
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)
48:
49: /* LSA definition */
50:
51: #define OSPF6_MAX_LSASIZE 4096
52:
53: /* Type */
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
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
69: #define OSPF6_LSTYPE_FCODE_MASK 0x1fff
70:
71: /* LSA scope */
72: #define OSPF6_SCOPE_LINKLOCAL 0x0000
73: #define OSPF6_SCOPE_AREA 0x2000
74: #define OSPF6_SCOPE_AS 0x4000
75: #define OSPF6_SCOPE_RESERVED 0x6000
76:
77: /* XXX U-bit handling should be treated here */
78: #define OSPF6_LSA_SCOPE(type) \
79: (ntohs (type) & OSPF6_LSTYPE_SCOPE_MASK)
80:
81: /* LSA Header */
82: #define OSPF6_LSA_HEADER_SIZE 20U
83: struct ospf6_lsa_header
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:
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) == OSPF_LSA_MAXAGE)
111: #define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2)
112: #define OSPF6_LSA_IS_SEQWRAP(L) ((L)->header->seqnum == htonl(OSPF_MAX_SEQUENCE_NUMBER + 1))
113:
114:
115: struct ospf6_lsa
116: {
117: char name[64]; /* dump string */
118:
119: struct route_node *rn;
120:
121: unsigned char lock; /* reference counter */
122: unsigned char flag; /* special meaning (e.g. floodback) */
123:
124: struct timeval birth; /* tv_sec when LS age 0 */
125: struct timeval originated; /* used by MinLSInterval check */
126: struct timeval received; /* used by MinLSArrival check */
127: struct timeval installed;
128:
129: struct thread *expire;
130: struct thread *refresh; /* For self-originated LSA */
131:
132: int retrans_count;
133:
134: struct ospf6_lsdb *lsdb;
135:
136: /* lsa instance */
137: struct ospf6_lsa_header *header;
138: };
139:
140: #define OSPF6_LSA_HEADERONLY 0x01
141: #define OSPF6_LSA_FLOODBACK 0x02
142: #define OSPF6_LSA_DUPLICATE 0x04
143: #define OSPF6_LSA_IMPLIEDACK 0x08
144: #define OSPF6_LSA_SEQWRAPPED 0x20
145:
146: struct ospf6_lsa_handler
147: {
148: u_int16_t type; /* host byte order */
149: const char *name;
150: const char *short_name;
151: int (*show) (struct vty *, struct ospf6_lsa *);
152: char *(*get_prefix_str) (struct ospf6_lsa *, char *buf, int buflen, int pos);
153: u_char debug;
154: };
155:
156: extern struct ospf6_lsa_handler unknown_handler;
157: #define OSPF6_LSA_IS_KNOWN(type) \
158: (ospf6_get_lsa_handler (type) != &unknown_handler ? 1 : 0)
159:
160: /* Macro for LSA Origination */
161: /* addr is (struct prefix *) */
162: #define CONTINUE_IF_ADDRESS_LINKLOCAL(debug,addr) \
163: if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6)) \
164: { \
165: char buf[64]; \
166: prefix2str (addr, buf, sizeof (buf)); \
167: if (debug) \
168: zlog_debug ("Filter out Linklocal: %s", buf); \
169: continue; \
170: }
171:
172: #define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug,addr) \
173: if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6)) \
174: { \
175: char buf[64]; \
176: prefix2str (addr, buf, sizeof (buf)); \
177: if (debug) \
178: zlog_debug ("Filter out Unspecified: %s", buf);\
179: continue; \
180: }
181:
182: #define CONTINUE_IF_ADDRESS_LOOPBACK(debug,addr) \
183: if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6)) \
184: { \
185: char buf[64]; \
186: prefix2str (addr, buf, sizeof (buf)); \
187: if (debug) \
188: zlog_debug ("Filter out Loopback: %s", buf); \
189: continue; \
190: }
191:
192: #define CONTINUE_IF_ADDRESS_V4COMPAT(debug,addr) \
193: if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6)) \
194: { \
195: char buf[64]; \
196: prefix2str (addr, buf, sizeof (buf)); \
197: if (debug) \
198: zlog_debug ("Filter out V4Compat: %s", buf); \
199: continue; \
200: }
201:
202: #define CONTINUE_IF_ADDRESS_V4MAPPED(debug,addr) \
203: if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6)) \
204: { \
205: char buf[64]; \
206: prefix2str (addr, buf, sizeof (buf)); \
207: if (debug) \
208: zlog_debug ("Filter out V4Mapped: %s", buf); \
209: continue; \
210: }
211:
212:
213: /* Function Prototypes */
214: extern const char *ospf6_lstype_name (u_int16_t type);
215: extern const char *ospf6_lstype_short_name (u_int16_t type);
216: extern u_char ospf6_lstype_debug (u_int16_t type);
217: extern int ospf6_lsa_is_differ (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
218: extern int ospf6_lsa_is_changed (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
219: extern u_int16_t ospf6_lsa_age_current (struct ospf6_lsa *);
220: extern void ospf6_lsa_age_update_to_send (struct ospf6_lsa *, u_int32_t);
221: extern void ospf6_lsa_premature_aging (struct ospf6_lsa *);
222: extern int ospf6_lsa_compare (struct ospf6_lsa *, struct ospf6_lsa *);
223:
224: extern char *ospf6_lsa_printbuf (struct ospf6_lsa *lsa, char *buf, int size);
225: extern void ospf6_lsa_header_print_raw (struct ospf6_lsa_header *header);
226: extern void ospf6_lsa_header_print (struct ospf6_lsa *lsa);
227: extern void ospf6_lsa_show_summary_header (struct vty *vty);
228: extern void ospf6_lsa_show_summary (struct vty *vty, struct ospf6_lsa *lsa);
229: extern void ospf6_lsa_show_dump (struct vty *vty, struct ospf6_lsa *lsa);
230: extern void ospf6_lsa_show_internal (struct vty *vty, struct ospf6_lsa *lsa);
231: extern void ospf6_lsa_show (struct vty *vty, struct ospf6_lsa *lsa);
232:
233: extern struct ospf6_lsa *ospf6_lsa_create (struct ospf6_lsa_header *header);
234: extern struct ospf6_lsa *ospf6_lsa_create_headeronly (struct ospf6_lsa_header *header);
235: extern void ospf6_lsa_delete (struct ospf6_lsa *lsa);
236: extern struct ospf6_lsa *ospf6_lsa_copy (struct ospf6_lsa *);
237:
238: extern void ospf6_lsa_lock (struct ospf6_lsa *);
239: extern void ospf6_lsa_unlock (struct ospf6_lsa *);
240:
241: extern int ospf6_lsa_expire (struct thread *);
242: extern int ospf6_lsa_refresh (struct thread *);
243:
244: extern unsigned short ospf6_lsa_checksum (struct ospf6_lsa_header *);
245: extern int ospf6_lsa_checksum_valid (struct ospf6_lsa_header *);
246: extern int ospf6_lsa_prohibited_duration (u_int16_t type, u_int32_t id,
247: u_int32_t adv_router, void *scope);
248:
249: extern void ospf6_install_lsa_handler (struct ospf6_lsa_handler *handler);
250: extern struct ospf6_lsa_handler *ospf6_get_lsa_handler (u_int16_t type);
251:
252: extern void ospf6_lsa_init (void);
253: extern void ospf6_lsa_terminate (void);
254:
255: extern int config_write_ospf6_debug_lsa (struct vty *vty);
256: extern void install_element_ospf6_debug_lsa (void);
257:
258: #endif /* OSPF6_LSA_H */
259:
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