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2 * Copyright (C) 2001 Yasuhiro Ohara
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 /* for struct ospf6_prefix */
25 #include "ospf6_proto.h"
26 /* for struct ospf6_lsa */
27 #include "ospf6_lsa.h"
28 /* for struct ospf6_route */
29 #include "ospf6_route.h"
32 extern unsigned char conf_debug_ospf6_asbr
;
33 #define OSPF6_DEBUG_ASBR_ON() (conf_debug_ospf6_asbr = 1)
34 #define OSPF6_DEBUG_ASBR_OFF() (conf_debug_ospf6_asbr = 0)
35 #define IS_OSPF6_DEBUG_ASBR (conf_debug_ospf6_asbr)
37 struct ospf6_external_info
{
38 /* External route type */
41 /* Originating Link State ID */
44 struct in6_addr forwarding
;
52 /* OSPF6 ASBR Summarisation */
54 OSPF6_ROUTE_AGGR_NONE
= 0,
57 OSPF6_ROUTE_AGGR_MODIFY
58 } ospf6_aggr_action_t
;
60 #define OSPF6_EXTERNAL_AGGRT_NO_ADVERTISE 0x1
61 #define OSPF6_EXTERNAL_AGGRT_ORIGINATED 0x2
63 #define OSPF6_EXTERNAL_RT_COUNT(aggr) \
64 (((struct ospf6_external_aggr_rt *)aggr)->match_extnl_hash->count)
66 struct ospf6_external_aggr_rt
{
67 /* range address and masklen */
70 /* use bits for OSPF6_EXTERNAL_AGGRT_NO_ADVERTISE and
71 * OSPF6_EXTERNAL_AGGRT_ORIGINATED
75 /* To store external metric-type */
78 /* Route tag for summary address */
81 /* To store aggregated metric config */
84 /* To Store the LS ID when LSA is originated */
87 /* Action to be done after delay timer expiry */
90 /* OSPFv3 route generated by summary address. */
91 struct ospf6_route
*route
;
93 /* Hash table of matching external routes */
94 struct hash
*match_extnl_hash
;
98 #define OSPF6_AS_EXTERNAL_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */
99 struct ospf6_as_external_lsa
{
100 uint32_t bits_metric
;
102 struct ospf6_prefix prefix
;
103 /* followed by none or one forwarding address */
104 /* followed by none or one external route tag */
105 /* followed by none or one referenced LS-ID */
108 #define OSPF6_ASBR_BIT_T ntohl (0x01000000)
109 #define OSPF6_ASBR_BIT_F ntohl (0x02000000)
110 #define OSPF6_ASBR_BIT_E ntohl (0x04000000)
112 #define OSPF6_ASBR_METRIC(E) (ntohl ((E)->bits_metric & htonl (0x00ffffff)))
113 #define OSPF6_ASBR_METRIC_SET(E, C) \
115 (E)->bits_metric &= htonl(0xff000000); \
116 (E)->bits_metric |= htonl(0x00ffffff) & htonl(C); \
119 extern void ospf6_asbr_lsa_add(struct ospf6_lsa
*lsa
);
121 extern void ospf6_asbr_lsa_remove(struct ospf6_lsa
*lsa
,
122 struct ospf6_route
*asbr_entry
);
123 extern void ospf6_asbr_lsentry_add(struct ospf6_route
*asbr_entry
,
124 struct ospf6
*ospf6
);
125 extern void ospf6_asbr_lsentry_remove(struct ospf6_route
*asbr_entry
,
126 struct ospf6
*ospf6
);
128 extern int ospf6_asbr_is_asbr(struct ospf6
*o
);
129 extern void ospf6_asbr_redistribute_add(int type
, ifindex_t ifindex
,
130 struct prefix
*prefix
,
131 unsigned int nexthop_num
,
132 struct in6_addr
*nexthop
,
133 route_tag_t tag
, struct ospf6
*ospf6
);
134 extern void ospf6_asbr_redistribute_remove(int type
, ifindex_t ifindex
,
135 struct prefix
*prefix
,
136 struct ospf6
*ospf6
);
138 extern int ospf6_redistribute_config_write(struct vty
*vty
,
139 struct ospf6
*ospf6
);
141 extern void ospf6_asbr_init(void);
142 extern void ospf6_asbr_redistribute_disable(struct ospf6
*ospf6
);
143 extern void ospf6_asbr_redistribute_reset(struct ospf6
*ospf6
);
144 extern void ospf6_asbr_terminate(void);
145 extern void ospf6_asbr_send_externals_to_area(struct ospf6_area
*);
146 extern void ospf6_asbr_remove_externals_from_area(struct ospf6_area
*oa
);
148 extern int config_write_ospf6_debug_asbr(struct vty
*vty
);
149 extern int ospf6_distribute_config_write(struct vty
*vty
, struct ospf6
*ospf6
);
150 extern void install_element_ospf6_debug_asbr(void);
151 extern void ospf6_asbr_update_route_ecmp_path(struct ospf6_route
*old
,
152 struct ospf6_route
*route
,
153 struct ospf6
*ospf6
);
154 extern void ospf6_asbr_distribute_list_update(struct ospf6
*ospf6
,
155 struct ospf6_redist
*red
);
156 struct ospf6_redist
*ospf6_redist_lookup(struct ospf6
*ospf6
, int type
,
157 unsigned short instance
);
158 extern void ospf6_asbr_routemap_update(const char *mapname
);
159 extern struct ospf6_lsa
*
160 ospf6_as_external_lsa_originate(struct ospf6_route
*route
,
161 struct ospf6
*ospf6
);
162 extern void ospf6_asbr_status_update(struct ospf6
*ospf6
, int status
);
164 int ospf6_asbr_external_rt_advertise(struct ospf6
*ospf6
,
166 int ospf6_external_aggr_delay_timer_set(struct ospf6
*ospf6
,
167 unsigned int interval
);
168 int ospf6_asbr_external_rt_no_advertise(struct ospf6
*ospf6
,
171 struct ospf6_external_aggr_rt
*
172 ospf6_external_aggr_config_lookup(struct ospf6
*ospf6
, struct prefix
*p
);
174 int ospf6_external_aggr_config_set(struct ospf6
*ospf6
, struct prefix
*p
,
175 route_tag_t tag
, int metric
, int mtype
);
177 int ospf6_external_aggr_config_unset(struct ospf6
*ospf6
,
179 void ospf6_handle_external_lsa_origination(struct ospf6
*ospf6
,
180 struct ospf6_route
*rt
,
182 void ospf6_external_aggregator_free(struct ospf6_external_aggr_rt
*aggr
);
183 void ospf6_unset_all_aggr_flag(struct ospf6
*ospf6
);
184 void ospf6_fill_aggr_route_details(struct ospf6
*ospf6
,
185 struct ospf6_external_aggr_rt
*aggr
);
186 #endif /* OSPF6_ASBR_H */