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247 lines
9.2 KiB
C
247 lines
9.2 KiB
C
/*
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* Copyright (C) 2003 Yasuhiro Ohara
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef OSPF6_LSA_H
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#define OSPF6_LSA_H
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/* Debug option */
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#define OSPF6_LSA_DEBUG 0x01
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#define OSPF6_LSA_DEBUG_ORIGINATE 0x02
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#define OSPF6_LSA_DEBUG_EXAMIN 0x04
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#define OSPF6_LSA_DEBUG_FLOOD 0x08
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#define IS_OSPF6_DEBUG_LSA(name) \
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(ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \
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OSPF6_LSA_DEBUG)
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#define IS_OSPF6_DEBUG_ORIGINATE(name) \
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(ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \
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OSPF6_LSA_DEBUG_ORIGINATE)
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#define IS_OSPF6_DEBUG_EXAMIN(name) \
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(ospf6_lstype_debug (htons (OSPF6_LSTYPE_ ## name)) & \
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OSPF6_LSA_DEBUG_EXAMIN)
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#define IS_OSPF6_DEBUG_LSA_TYPE(type) \
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(ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG)
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#define IS_OSPF6_DEBUG_ORIGINATE_TYPE(type) \
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(ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_ORIGINATE)
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#define IS_OSPF6_DEBUG_EXAMIN_TYPE(type) \
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(ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_EXAMIN)
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#define IS_OSPF6_DEBUG_FLOOD_TYPE(type) \
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(ospf6_lstype_debug (type) & OSPF6_LSA_DEBUG_FLOOD)
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/* LSA definition */
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#define OSPF6_MAX_LSASIZE 4096
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/* Type */
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#define OSPF6_LSTYPE_UNKNOWN 0x0000
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#define OSPF6_LSTYPE_ROUTER 0x2001
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#define OSPF6_LSTYPE_NETWORK 0x2002
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#define OSPF6_LSTYPE_INTER_PREFIX 0x2003
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#define OSPF6_LSTYPE_INTER_ROUTER 0x2004
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#define OSPF6_LSTYPE_AS_EXTERNAL 0x4005
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#define OSPF6_LSTYPE_GROUP_MEMBERSHIP 0x2006
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#define OSPF6_LSTYPE_TYPE_7 0x2007
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#define OSPF6_LSTYPE_LINK 0x0008
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#define OSPF6_LSTYPE_INTRA_PREFIX 0x2009
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#define OSPF6_LSTYPE_SIZE 0x000a
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/* Masks for LS Type : RFC 2740 A.4.2.1 "LS type" */
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#define OSPF6_LSTYPE_UBIT_MASK 0x8000
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#define OSPF6_LSTYPE_SCOPE_MASK 0x6000
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#define OSPF6_LSTYPE_FCODE_MASK 0x1fff
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/* LSA scope */
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#define OSPF6_SCOPE_LINKLOCAL 0x0000
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#define OSPF6_SCOPE_AREA 0x2000
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#define OSPF6_SCOPE_AS 0x4000
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#define OSPF6_SCOPE_RESERVED 0x6000
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/* XXX U-bit handling should be treated here */
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#define OSPF6_LSA_SCOPE(type) \
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(ntohs (type) & OSPF6_LSTYPE_SCOPE_MASK)
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/* LSA Header */
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struct ospf6_lsa_header
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{
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u_int16_t age; /* LS age */
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u_int16_t type; /* LS type */
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u_int32_t id; /* Link State ID */
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u_int32_t adv_router; /* Advertising Router */
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u_int32_t seqnum; /* LS sequence number */
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u_int16_t checksum; /* LS checksum */
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u_int16_t length; /* LSA length */
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};
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#define OSPF6_LSA_HEADER_END(h) \
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((caddr_t)(h) + sizeof (struct ospf6_lsa_header))
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#define OSPF6_LSA_SIZE(h) \
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(ntohs (((struct ospf6_lsa_header *) (h))->length))
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#define OSPF6_LSA_END(h) \
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((caddr_t)(h) + ntohs (((struct ospf6_lsa_header *) (h))->length))
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#define OSPF6_LSA_IS_TYPE(t, L) \
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((L)->header->type == htons (OSPF6_LSTYPE_ ## t) ? 1 : 0)
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#define OSPF6_LSA_IS_SAME(L1, L2) \
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((L1)->header->adv_router == (L2)->header->adv_router && \
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(L1)->header->id == (L2)->header->id && \
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(L1)->header->type == (L2)->header->type)
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#define OSPF6_LSA_IS_MATCH(t, i, a, L) \
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((L)->header->adv_router == (a) && (L)->header->id == (i) && \
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(L)->header->type == (t))
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#define OSPF6_LSA_IS_DIFFER(L1, L2) ospf6_lsa_is_differ (L1, L2)
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#define OSPF6_LSA_IS_MAXAGE(L) (ospf6_lsa_age_current (L) == MAXAGE)
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#define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2)
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struct ospf6_lsa
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{
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char name[64]; /* dump string */
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struct ospf6_lsa *prev;
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struct ospf6_lsa *next;
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unsigned char lock; /* reference counter */
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unsigned char flag; /* special meaning (e.g. floodback) */
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struct timeval birth; /* tv_sec when LS age 0 */
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struct timeval originated; /* used by MinLSInterval check */
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struct timeval received; /* used by MinLSArrival check */
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struct timeval installed;
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struct thread *expire;
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struct thread *refresh; /* For self-originated LSA */
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int retrans_count;
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struct ospf6_lsdb *lsdb;
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/* lsa instance */
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struct ospf6_lsa_header *header;
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};
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#define OSPF6_LSA_HEADERONLY 0x01
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#define OSPF6_LSA_FLOODBACK 0x02
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#define OSPF6_LSA_DUPLICATE 0x04
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#define OSPF6_LSA_IMPLIEDACK 0x08
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struct ospf6_lsa_handler
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{
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u_int16_t type; /* host byte order */
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char *name;
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int (*show) (struct vty *, struct ospf6_lsa *);
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u_char debug;
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};
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/* Macro for LSA Origination */
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/* addr is (struct prefix *) */
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#define CONTINUE_IF_ADDRESS_LINKLOCAL(debug,addr) \
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if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6)) \
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{ \
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char buf[64]; \
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prefix2str (addr, buf, sizeof (buf)); \
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if (debug) \
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zlog_info ("Filter out Linklocal: %s", buf); \
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continue; \
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}
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#define CONTINUE_IF_ADDRESS_UNSPECIFIED(debug,addr) \
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if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6)) \
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{ \
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char buf[64]; \
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prefix2str (addr, buf, sizeof (buf)); \
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if (debug) \
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zlog_info ("Filter out Unspecified: %s", buf); \
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continue; \
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}
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#define CONTINUE_IF_ADDRESS_LOOPBACK(debug,addr) \
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if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6)) \
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{ \
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char buf[64]; \
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prefix2str (addr, buf, sizeof (buf)); \
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if (debug) \
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zlog_info ("Filter out Loopback: %s", buf); \
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continue; \
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}
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#define CONTINUE_IF_ADDRESS_V4COMPAT(debug,addr) \
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if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6)) \
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{ \
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char buf[64]; \
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prefix2str (addr, buf, sizeof (buf)); \
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if (debug) \
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zlog_info ("Filter out V4Compat: %s", buf); \
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continue; \
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}
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#define CONTINUE_IF_ADDRESS_V4MAPPED(debug,addr) \
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if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6)) \
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{ \
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char buf[64]; \
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prefix2str (addr, buf, sizeof (buf)); \
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if (debug) \
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zlog_info ("Filter out V4Mapped: %s", buf); \
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continue; \
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}
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/* Function Prototypes */
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char *ospf6_lstype_name (u_int16_t type);
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u_char ospf6_lstype_debug (u_int16_t type);
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int ospf6_lsa_is_differ (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
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int ospf6_lsa_is_changed (struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2);
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u_int16_t ospf6_lsa_age_current (struct ospf6_lsa *);
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void ospf6_lsa_age_update_to_send (struct ospf6_lsa *, u_int32_t);
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void ospf6_lsa_premature_aging (struct ospf6_lsa *);
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int ospf6_lsa_compare (struct ospf6_lsa *, struct ospf6_lsa *);
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char *ospf6_lsa_printbuf (struct ospf6_lsa *lsa, char *buf, int size);
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void ospf6_lsa_header_print_raw (struct ospf6_lsa_header *header);
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void ospf6_lsa_header_print (struct ospf6_lsa *lsa);
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void ospf6_lsa_show_summary_header (struct vty *vty);
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void ospf6_lsa_show_summary (struct vty *vty, struct ospf6_lsa *lsa);
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void ospf6_lsa_show_dump (struct vty *vty, struct ospf6_lsa *lsa);
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void ospf6_lsa_show_internal (struct vty *vty, struct ospf6_lsa *lsa);
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void ospf6_lsa_show (struct vty *vty, struct ospf6_lsa *lsa);
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struct ospf6_lsa *ospf6_lsa_create (struct ospf6_lsa_header *header);
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struct ospf6_lsa *ospf6_lsa_create_headeronly (struct ospf6_lsa_header *header);
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void ospf6_lsa_delete (struct ospf6_lsa *lsa);
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struct ospf6_lsa *ospf6_lsa_copy (struct ospf6_lsa *);
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void ospf6_lsa_lock (struct ospf6_lsa *);
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void ospf6_lsa_unlock (struct ospf6_lsa *);
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int ospf6_lsa_expire (struct thread *);
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int ospf6_lsa_refresh (struct thread *);
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unsigned short ospf6_lsa_checksum (struct ospf6_lsa_header *);
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int ospf6_lsa_prohibited_duration (u_int16_t type, u_int32_t id,
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u_int32_t adv_router, void *scope);
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void ospf6_install_lsa_handler (struct ospf6_lsa_handler *handler);
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void ospf6_lsa_init ();
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void ospf6_lsa_cmd_init ();
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int config_write_ospf6_debug_lsa (struct vty *vty);
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void install_element_ospf6_debug_lsa ();
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#endif /* OSPF6_LSA_H */
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