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c3c0ac8395
OSPFv3: Add ABR support and make ECMP > 4. Signed-off-by: Dinesh G Dutt <ddutt at cumulusnetworks.com> Signed-off-by: Pradosh Mohapatra <pmohapat at cumulusnetworks.com>
165 lines
4.4 KiB
C
165 lines
4.4 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_SPF_H
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#define OSPF6_SPF_H
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#include "ospf6_top.h"
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/* Debug option */
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extern unsigned char conf_debug_ospf6_spf;
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#define OSPF6_DEBUG_SPF_PROCESS 0x01
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#define OSPF6_DEBUG_SPF_TIME 0x02
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#define OSPF6_DEBUG_SPF_DATABASE 0x04
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#define OSPF6_DEBUG_SPF_ON(level) \
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(conf_debug_ospf6_spf |= (level))
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#define OSPF6_DEBUG_SPF_OFF(level) \
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(conf_debug_ospf6_spf &= ~(level))
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#define IS_OSPF6_DEBUG_SPF(level) \
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(conf_debug_ospf6_spf & OSPF6_DEBUG_SPF_ ## level)
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/* Transit Vertex */
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struct ospf6_vertex
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{
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/* type of this vertex */
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u_int8_t type;
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/* Vertex Identifier */
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struct prefix vertex_id;
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/* Identifier String */
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char name[128];
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/* Associated Area */
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struct ospf6_area *area;
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/* Associated LSA */
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struct ospf6_lsa *lsa;
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/* Distance from Root (i.e. Cost) */
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u_int32_t cost;
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/* Router hops to this node */
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u_char hops;
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/* capability bits */
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u_char capability;
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/* Optional capabilities */
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u_char options[3];
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/* For tree display */
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struct ospf6_vertex *parent;
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struct list *child_list;
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/* nexthops to this node */
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struct list *nh_list;
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};
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#define OSPF6_VERTEX_TYPE_ROUTER 0x01
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#define OSPF6_VERTEX_TYPE_NETWORK 0x02
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#define VERTEX_IS_TYPE(t, v) \
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((v)->type == OSPF6_VERTEX_TYPE_ ## t ? 1 : 0)
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/* What triggered the SPF? */
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#define OSPF6_SPF_FLAGS_ROUTER_LSA_ADDED (1 << 0)
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#define OSPF6_SPF_FLAGS_ROUTER_LSA_REMOVED (1 << 1)
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#define OSPF6_SPF_FLAGS_NETWORK_LSA_ADDED (1 << 2)
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#define OSPF6_SPF_FLAGS_NETWORK_LSA_REMOVED (1 << 3)
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#define OSPF6_SPF_FLAGS_LINK_LSA_ADDED (1 << 4)
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#define OSPF6_SPF_FLAGS_LINK_LSA_REMOVED (1 << 5)
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#define OSPF6_SPF_FLAGS_ROUTER_LSA_ORIGINATED (1 << 6)
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#define OSPF6_SPF_FLAGS_NETWORK_LSA_ORIGINATED (1 << 7)
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static inline void
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ospf6_set_spf_reason (struct ospf6* ospf, unsigned int reason)
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{
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ospf->spf_reason |= reason;
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}
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static inline void
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ospf6_reset_spf_reason (struct ospf6 *ospf)
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{
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ospf->spf_reason = 0;
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}
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static inline unsigned int
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ospf6_lsadd_to_spf_reason (struct ospf6_lsa *lsa)
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{
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unsigned int reason = 0;
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switch (ntohs (lsa->header->type))
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{
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case OSPF6_LSTYPE_ROUTER:
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reason = OSPF6_SPF_FLAGS_ROUTER_LSA_ADDED;
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break;
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case OSPF6_LSTYPE_NETWORK:
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reason = OSPF6_SPF_FLAGS_NETWORK_LSA_ADDED;
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break;
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case OSPF6_LSTYPE_LINK:
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reason = OSPF6_SPF_FLAGS_LINK_LSA_ADDED;
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break;
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default:
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break;
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}
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return (reason);
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}
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static inline unsigned int
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ospf6_lsremove_to_spf_reason (struct ospf6_lsa *lsa)
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{
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unsigned int reason = 0;
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switch (ntohs (lsa->header->type))
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{
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case OSPF6_LSTYPE_ROUTER:
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reason = OSPF6_SPF_FLAGS_ROUTER_LSA_REMOVED;
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break;
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case OSPF6_LSTYPE_NETWORK:
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reason = OSPF6_SPF_FLAGS_NETWORK_LSA_REMOVED;
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break;
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case OSPF6_LSTYPE_LINK:
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reason = OSPF6_SPF_FLAGS_LINK_LSA_REMOVED;
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break;
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default:
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break;
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}
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return (reason);
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}
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extern void ospf6_spf_table_finish (struct ospf6_route_table *result_table);
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extern void ospf6_spf_calculation (u_int32_t router_id,
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struct ospf6_route_table *result_table,
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struct ospf6_area *oa);
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extern void ospf6_spf_schedule (struct ospf6 *ospf, unsigned int reason);
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extern void ospf6_spf_display_subtree (struct vty *vty, const char *prefix,
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int rest, struct ospf6_vertex *v);
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extern void ospf6_spf_config_write (struct vty *vty);
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extern int config_write_ospf6_debug_spf (struct vty *vty);
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extern void install_element_ospf6_debug_spf (void);
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extern void ospf6_spf_init (void);
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extern void ospf6_spf_reason_string (unsigned int reason, char *buf, int size);
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#endif /* OSPF6_SPF_H */
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