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Issue #9535 describes how the export-list/import-list commands work differently on ospfd and ospf6d. In short: * On ospfd, "area A.B.C.D export-list" filters which internal routes an ABR exports to other areas. On ospf6d, instead, that command filters which inter-area routes an ABR exports to the configured area (which is quite counter-intuitive). In other words, both commands do the same but in opposite directions. * On ospfd, "area A.B.C.D import-list" filters which inter-area routes an ABR imports into the configured area. On ospf6d, that command filters which inter-area routes an interior router accepts. * On both daemons, "area A.B.C.D filter-list prefix NAME <in|out>" works exactly the same as import/export lists, but using prefix-lists instead of ACLs. The inconsistency on how those commands work is undesirable. This PR proposes to adapt the ospf6d commands to behave like they do in ospfd. These changes are obviously backward incompatible and this PR doesn't propose any mitigation strategy other than warning users about the changes in the next release notes. Since these ospf6d commands are undocumented and work in such a peculiar way, it's unlikely many users will be affected (if any at all). Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
174 lines
5.6 KiB
C
174 lines
5.6 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 OSPF_AREA_H
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#define OSPF_AREA_H
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#include "ospf6_top.h"
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#include "lib/json.h"
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struct ospf6_area {
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/* Reference to Top data structure */
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struct ospf6 *ospf6;
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/* Area-ID */
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in_addr_t area_id;
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#define OSPF6_AREA_FMT_UNSET 0
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#define OSPF6_AREA_FMT_DOTTEDQUAD 1
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#define OSPF6_AREA_FMT_DECIMAL 2
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/* Area-ID string */
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char name[16];
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/* flag */
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uint8_t flag;
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/* OSPF Option */
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uint8_t options[3];
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/* Summary routes to be originated (includes Configured Address Ranges)
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*/
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struct ospf6_route_table *range_table;
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struct ospf6_route_table *summary_prefix;
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struct ospf6_route_table *summary_router;
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/* Area type */
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int no_summary;
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/* Brouter traversal protection */
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int intra_brouter_calc;
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/* OSPF interface list */
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struct list *if_list;
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struct ospf6_lsdb *lsdb;
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struct ospf6_lsdb *lsdb_self;
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struct ospf6_lsdb *temp_router_lsa_lsdb;
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struct ospf6_route_table *spf_table;
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struct ospf6_route_table *route_table;
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uint32_t spf_calculation; /* SPF calculation count */
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struct thread *thread_router_lsa;
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struct thread *thread_intra_prefix_lsa;
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uint32_t router_lsa_size_limit;
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/* Area announce list */
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struct {
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char *name;
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struct access_list *list;
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} _export;
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#define EXPORT_NAME(A) (A)->_export.name
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#define EXPORT_LIST(A) (A)->_export.list
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/* Area acceptance list */
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struct {
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char *name;
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struct access_list *list;
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} import;
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#define IMPORT_NAME(A) (A)->import.name
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#define IMPORT_LIST(A) (A)->import.list
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/* Type 3 LSA Area prefix-list */
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struct {
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char *name;
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struct prefix_list *list;
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} plist_in;
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#define PREFIX_NAME_IN(A) (A)->plist_in.name
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#define PREFIX_LIST_IN(A) (A)->plist_in.list
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struct {
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char *name;
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struct prefix_list *list;
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} plist_out;
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#define PREFIX_NAME_OUT(A) (A)->plist_out.name
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#define PREFIX_LIST_OUT(A) (A)->plist_out.list
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/* Time stamps. */
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struct timeval ts_spf; /* SPF calculation time stamp. */
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uint32_t full_nbrs; /* Fully adjacent neighbors. */
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uint8_t intra_prefix_originate; /* Force intra_prefix lsa originate */
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uint8_t NSSATranslatorRole; /* NSSA configured role */
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#define OSPF6_NSSA_ROLE_NEVER 0
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#define OSPF6_NSSA_ROLE_CANDIDATE 1
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#define OSPF6_NSSA_ROLE_ALWAYS 2
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uint8_t NSSATranslatorState; /* NSSA operational role */
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#define OSPF6_NSSA_TRANSLATE_DISABLED 0
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#define OSPF6_NSSA_TRANSLATE_ENABLED 1
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};
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#define OSPF6_AREA_DEFAULT 0x00
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#define OSPF6_AREA_ENABLE 0x01
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#define OSPF6_AREA_ACTIVE 0x02
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#define OSPF6_AREA_TRANSIT 0x04 /* TransitCapability */
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#define OSPF6_AREA_STUB 0x08
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#define OSPF6_AREA_NSSA 0x10
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#define IS_AREA_ENABLED(oa) (CHECK_FLAG ((oa)->flag, OSPF6_AREA_ENABLE))
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#define IS_AREA_ACTIVE(oa) (CHECK_FLAG ((oa)->flag, OSPF6_AREA_ACTIVE))
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#define IS_AREA_TRANSIT(oa) (CHECK_FLAG ((oa)->flag, OSPF6_AREA_TRANSIT))
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#define IS_AREA_STUB(oa) (CHECK_FLAG ((oa)->flag, OSPF6_AREA_STUB))
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#define IS_AREA_NSSA(oa) (CHECK_FLAG((oa)->flag, OSPF6_AREA_NSSA))
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#define OSPF6_CMD_AREA_GET(str, oa, ospf6) \
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{ \
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uint32_t area_id; \
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int format, ret; \
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ret = str2area_id(str, &area_id, &format); \
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if (ret) { \
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vty_out(vty, "Malformed Area-ID: %s\n", str); \
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return CMD_WARNING; \
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} \
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oa = ospf6_area_lookup(area_id, ospf6); \
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if (oa == NULL) \
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oa = ospf6_area_create(area_id, ospf6, format); \
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}
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/* prototypes */
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extern int str2area_id(const char *str, uint32_t *area_id, int *area_id_fmt);
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extern void area_id2str(char *buf, int len, uint32_t area_id, int area_id_fmt);
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extern int ospf6_area_cmp(void *va, void *vb);
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extern struct ospf6_area *ospf6_area_create(uint32_t area_id,
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struct ospf6 *ospf6, int df);
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extern void ospf6_area_delete(struct ospf6_area *oa);
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extern struct ospf6_area *ospf6_area_lookup(uint32_t area_id,
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struct ospf6 *ospf6);
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extern struct ospf6_area *ospf6_area_lookup_by_area_id(uint32_t area_id);
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extern void ospf6_area_stub_unset(struct ospf6 *ospf6, struct ospf6_area *area);
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extern void ospf6_area_enable(struct ospf6_area *oa);
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extern void ospf6_area_disable(struct ospf6_area *oa);
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extern void ospf6_area_show(struct vty *vty, struct ospf6_area *oa,
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json_object *json_areas, bool use_json);
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extern void ospf6_plist_update(struct prefix_list *plist);
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extern void ospf6_filter_update(struct access_list *access);
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extern void ospf6_area_config_write(struct vty *vty, struct ospf6 *ospf6);
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extern void ospf6_area_init(void);
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struct ospf6_interface;
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extern void ospf6_area_interface_delete(struct ospf6_interface *oi);
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#endif /* OSPF_AREA_H */
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