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84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/*
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* IS-IS Rout(e)ing protocol - isis_spf.h
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* IS-IS Shortest Path First algorithm
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*
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* Copyright (C) 2001,2002 Sampo Saaristo
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* Tampere University of Technology
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* Institute of Communications Engineering
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public Licenseas published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 _ZEBRA_ISIS_SPF_H
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#define _ZEBRA_ISIS_SPF_H
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#include "isisd/isis_lfa.h"
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struct isis_spftree;
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enum spf_type {
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SPF_TYPE_FORWARD = 1,
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SPF_TYPE_REVERSE,
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SPF_TYPE_TI_LFA,
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};
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struct isis_spf_adj {
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uint8_t id[ISIS_SYS_ID_LEN + 1];
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struct isis_adjacency *adj;
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uint32_t metric;
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struct isis_ext_subtlvs *subtlvs;
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struct isis_lsp *lsp;
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struct {
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uint8_t desig_is_id[ISIS_SYS_ID_LEN + 1];
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} lan;
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uint8_t flags;
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#define F_ISIS_SPF_ADJ_BROADCAST 0x01
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#define F_ISIS_SPF_ADJ_OLDMETRIC 0x02
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#define F_ISIS_SPF_ADJ_METRIC_INFINITY 0x04
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};
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struct isis_spftree *isis_spftree_new(struct isis_area *area,
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struct lspdb_head *lspdb,
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const uint8_t *sysid, int level,
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enum spf_tree_id tree_id,
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enum spf_type type, uint8_t flags);
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struct isis_vertex *isis_spf_prefix_sid_lookup(struct isis_spftree *spftree,
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struct isis_prefix_sid *psid);
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void isis_spf_invalidate_routes(struct isis_spftree *tree);
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void isis_spf_verify_routes(struct isis_area *area,
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struct isis_spftree **trees);
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void isis_spftree_del(struct isis_spftree *spftree);
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void spftree_area_init(struct isis_area *area);
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void spftree_area_del(struct isis_area *area);
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struct isis_lsp *isis_root_system_lsp(struct lspdb_head *lspdb,
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const uint8_t *sysid);
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#define isis_spf_schedule(area, level) \
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_isis_spf_schedule((area), (level), __func__, \
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__FILE__, __LINE__)
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int _isis_spf_schedule(struct isis_area *area, int level,
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const char *func, const char *file, int line);
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void isis_print_spftree(struct vty *vty, struct isis_spftree *spftree);
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void isis_print_routes(struct vty *vty, struct isis_spftree *spftree,
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bool prefix_sid, bool backup);
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void isis_spf_init(void);
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void isis_spf_print(struct isis_spftree *spftree, struct vty *vty);
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void isis_run_spf(struct isis_spftree *spftree);
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struct isis_spftree *isis_run_hopcount_spf(struct isis_area *area,
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uint8_t *sysid,
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struct isis_spftree *spftree);
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void isis_spf_timer_free(void *run);
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#endif /* _ZEBRA_ISIS_SPF_H */
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