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166 lines
4.8 KiB
C
166 lines
4.8 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 along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 "typesafe.h"
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#include "ospf6_top.h"
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#include "lib/json.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) (conf_debug_ospf6_spf |= (level))
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#define OSPF6_DEBUG_SPF_OFF(level) (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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PREDECL_SKIPLIST_NONUNIQ(vertex_pqueue);
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/* Transit Vertex */
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struct ospf6_vertex {
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/* type of this vertex */
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uint8_t type;
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/* Vertex Identifier */
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struct prefix vertex_id;
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struct vertex_pqueue_item pqi;
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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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uint32_t cost;
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/* Router hops to this node */
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uint8_t hops;
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/* capability bits */
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uint8_t capability;
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/* Optional capabilities */
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uint8_t 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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uint32_t link_id;
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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) ((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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#define OSPF6_SPF_FLAGS_CONFIG_CHANGE (1 << 8)
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#define OSPF6_SPF_FLAGS_ASBR_STATUS_CHANGE (1 << 9)
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static inline void 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 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 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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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 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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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(uint32_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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json_object *json_obj, bool use_json);
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extern void ospf6_spf_config_write(struct vty *vty, struct ospf6 *ospf6);
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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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extern struct ospf6_lsa *ospf6_create_single_router_lsa(struct ospf6_area *area,
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struct ospf6_lsdb *lsdb,
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uint32_t adv_router);
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extern void ospf6_remove_temp_router_lsa(struct ospf6_area *area);
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#endif /* OSPF6_SPF_H */
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