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Diffstat (limited to 'isisd/isis_spf.h')
| -rw-r--r-- | isisd/isis_spf.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/isisd/isis_spf.h b/isisd/isis_spf.h new file mode 100644 index 0000000..815db7b --- /dev/null +++ b/isisd/isis_spf.h @@ -0,0 +1,86 @@ +/* + * IS-IS Rout(e)ing protocol - isis_spf.h + * IS-IS Shortest Path First algorithm + * + * Copyright (C) 2001,2002 Sampo Saaristo + * Tampere University of Technology + * Institute of Communications Engineering + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public Licenseas published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful,but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _ZEBRA_ISIS_SPF_H +#define _ZEBRA_ISIS_SPF_H + +#include "isisd/isis_lfa.h" + +struct isis_spftree; + +enum spf_type { + SPF_TYPE_FORWARD = 1, + SPF_TYPE_REVERSE, + SPF_TYPE_RLFA, + SPF_TYPE_TI_LFA, +}; + +struct isis_spf_adj { + uint8_t id[ISIS_SYS_ID_LEN + 1]; + struct isis_adjacency *adj; + uint32_t metric; + struct isis_ext_subtlvs *subtlvs; + struct isis_lsp *lsp; + struct { + uint8_t desig_is_id[ISIS_SYS_ID_LEN + 1]; + } lan; + uint8_t flags; +#define F_ISIS_SPF_ADJ_BROADCAST 0x01 +#define F_ISIS_SPF_ADJ_OLDMETRIC 0x02 +#define F_ISIS_SPF_ADJ_METRIC_INFINITY 0x04 +}; + +struct isis_spftree *isis_spftree_new(struct isis_area *area, + struct lspdb_head *lspdb, + const uint8_t *sysid, int level, + enum spf_tree_id tree_id, + enum spf_type type, uint8_t flags); +struct isis_vertex *isis_spf_prefix_sid_lookup(struct isis_spftree *spftree, + struct isis_prefix_sid *psid); +void isis_spf_invalidate_routes(struct isis_spftree *tree); +void isis_spf_verify_routes(struct isis_area *area, + struct isis_spftree **trees); +void isis_spftree_del(struct isis_spftree *spftree); +void spftree_area_init(struct isis_area *area); +void spftree_area_del(struct isis_area *area); +struct isis_lsp *isis_root_system_lsp(struct lspdb_head *lspdb, + const uint8_t *sysid); +#define isis_spf_schedule(area, level) \ + _isis_spf_schedule((area), (level), __func__, \ + __FILE__, __LINE__) +int _isis_spf_schedule(struct isis_area *area, int level, + const char *func, const char *file, int line); +void isis_print_spftree(struct vty *vty, struct isis_spftree *spftree); +void isis_print_routes(struct vty *vty, struct isis_spftree *spftree, + bool prefix_sid, bool backup); +void isis_spf_init(void); +void isis_spf_print(struct isis_spftree *spftree, struct vty *vty); +void isis_spf_print_json(struct isis_spftree *spftree, + struct json_object *json); +void isis_run_spf(struct isis_spftree *spftree); +struct isis_spftree *isis_run_hopcount_spf(struct isis_area *area, + uint8_t *sysid, + struct isis_spftree *spftree); + +void isis_spf_timer_free(void *run); +#endif /* _ZEBRA_ISIS_SPF_H */ |