Annotation of embedaddon/quagga/ospf6d/ospf6_lsa.h, revision 1.1
1.1 ! misho 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) == MAXAGE)
! 111: #define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2)
! 112:
! 113: struct ospf6_lsa
! 114: {
! 115: char name[64]; /* dump string */
! 116:
! 117: struct ospf6_lsa *prev;
! 118: struct ospf6_lsa *next;
! 119:
! 120: unsigned char lock; /* reference counter */
! 121: unsigned char flag; /* special meaning (e.g. floodback) */
! 122:
! 123: struct timeval birth; /* tv_sec when LS age 0 */
! 124: struct timeval originated; /* used by MinLSInterval check */
! 125: struct timeval received; /* used by MinLSArrival check */
! 126: struct timeval installed;
! 127:
! 128: struct thread *expire;
! 129: struct thread *refresh; /* For self-originated LSA */
! 130:
! 131: int retrans_count;
! 132:
! 133: struct ospf6_lsdb *lsdb;
! 134:
! 135: /* lsa instance */
! 136: struct ospf6_lsa_header *header;
! 137: };
! 138:
! 139: #define OSPF6_LSA_HEADERONLY 0x01
! 140: #define OSPF6_LSA_FLOODBACK 0x02
! 141: #define OSPF6_LSA_DUPLICATE 0x04
! 142: #define OSPF6_LSA_IMPLIEDACK 0x08
! 143:
! 144: struct ospf6_lsa_handler
! 145: {
! 146: u_int16_t type; /* host byte order */
! 147: const char *name;
! 148: int (*show) (struct vty *, struct ospf6_lsa *);
! 149: u_char debug;
! 150: };
! 151:
! 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:
! 156: /* Macro for LSA Origination */
! 157: /* addr is (struct prefix *) */
! 158: #define CONTINUE_IF_ADDRESS_LINKLOCAL(debug,addr) \
! 159: if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6)) \
! 160: { \
! 161: char buf[64]; \
! 162: prefix2str (addr, buf, sizeof (buf)); \
! 163: if (debug) \
! 164: zlog_debug ("Filter out Linklocal: %s", buf); \
! 165: continue; \
! 166: }
! 167:
! 168: #define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug,addr) \
! 169: if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6)) \
! 170: { \
! 171: char buf[64]; \
! 172: prefix2str (addr, buf, sizeof (buf)); \
! 173: if (debug) \
! 174: zlog_debug ("Filter out Unspecified: %s", buf);\
! 175: continue; \
! 176: }
! 177:
! 178: #define CONTINUE_IF_ADDRESS_LOOPBACK(debug,addr) \
! 179: if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6)) \
! 180: { \
! 181: char buf[64]; \
! 182: prefix2str (addr, buf, sizeof (buf)); \
! 183: if (debug) \
! 184: zlog_debug ("Filter out Loopback: %s", buf); \
! 185: continue; \
! 186: }
! 187:
! 188: #define CONTINUE_IF_ADDRESS_V4COMPAT(debug,addr) \
! 189: if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6)) \
! 190: { \
! 191: char buf[64]; \
! 192: prefix2str (addr, buf, sizeof (buf)); \
! 193: if (debug) \
! 194: zlog_debug ("Filter out V4Compat: %s", buf); \
! 195: continue; \
! 196: }
! 197:
! 198: #define CONTINUE_IF_ADDRESS_V4MAPPED(debug,addr) \
! 199: if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6)) \
! 200: { \
! 201: char buf[64]; \
! 202: prefix2str (addr, buf, sizeof (buf)); \
! 203: if (debug) \
! 204: zlog_debug ("Filter out V4Mapped: %s", buf); \
! 205: continue; \
! 206: }
! 207:
! 208:
! 209: /* Function Prototypes */
! 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);
! 247: extern void ospf6_lsa_terminate (void);
! 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);
! 252:
! 253: #endif /* OSPF6_LSA_H */
! 254:
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