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718e3744 | 1 | /* |
2 | * OSPF AS Boundary Router functions. | |
3 | * Copyright (C) 1999, 2000 Kunihiro Ishiguro, Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #ifndef _ZEBRA_OSPF_ASBR_H | |
23 | #define _ZEBRA_OSPF_ASBR_H | |
24 | ||
d62a17ae | 25 | struct route_map_set_values { |
26 | int32_t metric; | |
27 | int32_t metric_type; | |
718e3744 | 28 | }; |
29 | ||
30 | /* Redistributed external information. */ | |
d62a17ae | 31 | struct external_info { |
32 | /* Type of source protocol. */ | |
d7c0a89a | 33 | uint8_t type; |
718e3744 | 34 | |
d7c0a89a | 35 | unsigned short instance; |
7c8ff89e | 36 | |
d62a17ae | 37 | /* Prefix. */ |
38 | struct prefix_ipv4 p; | |
718e3744 | 39 | |
d62a17ae | 40 | /* Interface index. */ |
41 | ifindex_t ifindex; | |
718e3744 | 42 | |
d62a17ae | 43 | /* Nexthop address. */ |
44 | struct in_addr nexthop; | |
718e3744 | 45 | |
d62a17ae | 46 | /* Additional Route tag. */ |
47 | route_tag_t tag; | |
718e3744 | 48 | |
04e94d39 | 49 | /* Actual tag received from zebra*/ |
50 | route_tag_t orig_tag; | |
51 | ||
d62a17ae | 52 | struct route_map_set_values route_map_set; |
cb2bc4cb | 53 | #define ROUTEMAP_METRIC(E) (E)->route_map_set.metric |
718e3744 | 54 | #define ROUTEMAP_METRIC_TYPE(E) (E)->route_map_set.metric_type |
cb2bc4cb | 55 | |
56 | /* Back pointer to summary address */ | |
57 | struct ospf_external_aggr_rt *aggr_route; | |
58 | ||
59 | /* To identify the routes to be originated | |
60 | * after a summary address deletion. | |
61 | */ | |
62 | bool to_be_processed; | |
63 | }; | |
64 | ||
65 | #define OSPF_EXTL_AGGR_DEFAULT_DELAY 5 | |
66 | ||
67 | #define OSPF_EXTERNAL_RT_COUNT(aggr) \ | |
68 | (((struct ospf_external_aggr_rt *)aggr)->match_extnl_hash->count) | |
69 | ||
70 | enum ospf_aggr_action_t { | |
71 | OSPF_ROUTE_AGGR_NONE = 0, | |
72 | OSPF_ROUTE_AGGR_ADD, | |
73 | OSPF_ROUTE_AGGR_DEL, | |
74 | OSPF_ROUTE_AGGR_MODIFY | |
75 | }; | |
76 | ||
77 | #define OSPF_SUCCESS 1 | |
78 | #define OSPF_FAILURE 0 | |
79 | #define OSPF_INVALID -1 | |
80 | ||
81 | #define OSPF_EXTERNAL_AGGRT_NO_ADVERTISE 0x1 | |
82 | #define OSPF_EXTERNAL_AGGRT_ORIGINATED 0x2 | |
83 | ||
84 | /* Data structures for external route aggregator */ | |
85 | struct ospf_external_aggr_rt { | |
86 | /* Prefix. */ | |
87 | struct prefix_ipv4 p; | |
88 | ||
89 | /* Bit 1 : Dont advertise. | |
90 | * Bit 2 : Originated as Type-5 | |
91 | */ | |
92 | uint8_t flags; | |
93 | ||
94 | /* Tag for summary route */ | |
95 | route_tag_t tag; | |
96 | ||
97 | /* Action to be done at the delay | |
98 | * timer expairy. | |
99 | */ | |
100 | enum ospf_aggr_action_t action; | |
101 | ||
102 | /* Hash Table of external routes */ | |
103 | struct hash *match_extnl_hash; | |
718e3744 | 104 | }; |
105 | ||
106 | #define OSPF_ASBR_CHECK_DELAY 30 | |
1c1c342d | 107 | #define OSPF_ASBR_NSSA_REDIST_UPDATE_DELAY 9 |
718e3744 | 108 | |
d62a17ae | 109 | extern void ospf_external_route_remove(struct ospf *, struct prefix_ipv4 *); |
d7c0a89a | 110 | extern struct external_info *ospf_external_info_new(uint8_t, unsigned short); |
d62a17ae | 111 | extern void ospf_reset_route_map_set_values(struct route_map_set_values *); |
112 | extern int ospf_route_map_set_compare(struct route_map_set_values *, | |
113 | struct route_map_set_values *); | |
d7c0a89a QY |
114 | extern struct external_info *ospf_external_info_add(struct ospf *, uint8_t, |
115 | unsigned short, | |
116 | struct prefix_ipv4, | |
d62a17ae | 117 | ifindex_t, struct in_addr, |
118 | route_tag_t); | |
d7c0a89a | 119 | extern void ospf_external_info_delete(struct ospf *, uint8_t, unsigned short, |
de1ac5fd | 120 | struct prefix_ipv4); |
d7c0a89a QY |
121 | extern struct external_info *ospf_external_info_lookup(struct ospf *, uint8_t, |
122 | unsigned short, | |
123 | struct prefix_ipv4 *); | |
d7c0a89a | 124 | extern void ospf_asbr_status_update(struct ospf *, uint8_t); |
1c1c342d | 125 | extern void ospf_schedule_asbr_nssa_redist_update(struct ospf *ospf); |
718e3744 | 126 | |
d7c0a89a | 127 | extern void ospf_redistribute_withdraw(struct ospf *, uint8_t, unsigned short); |
d62a17ae | 128 | extern void ospf_asbr_check(void); |
129 | extern void ospf_schedule_asbr_check(void); | |
130 | extern void ospf_asbr_route_install_lsa(struct ospf_lsa *); | |
131 | extern struct ospf_lsa *ospf_external_info_find_lsa(struct ospf *, | |
132 | struct prefix_ipv4 *p); | |
718e3744 | 133 | |
ad7222b7 | 134 | /* External Route Aggregator */ |
135 | extern void ospf_asbr_external_aggregator_init(struct ospf *instance); | |
ad7222b7 | 136 | extern void ospf_external_aggregator_free(struct ospf_external_aggr_rt *aggr); |
423e71c4 | 137 | extern bool is_valid_summary_addr(struct prefix_ipv4 *p); |
63f0e941 | 138 | extern struct ospf_external_aggr_rt * |
139 | ospf_external_aggr_match(struct ospf *ospf, struct prefix_ipv4 *p); | |
63f0e941 | 140 | extern void ospf_unlink_ei_from_aggr(struct ospf *ospf, |
141 | struct ospf_external_aggr_rt *aggr, | |
142 | struct external_info *ei); | |
63f0e941 | 143 | extern struct ospf_lsa * |
144 | ospf_originate_summary_lsa(struct ospf *ospf, | |
145 | struct ospf_external_aggr_rt *aggr, | |
146 | struct external_info *ei); | |
147 | extern int ospf_external_aggregator_timer_set(struct ospf *ospf, | |
148 | unsigned int interval); | |
149 | extern void ospf_external_aggrigator_free(struct ospf_external_aggr_rt *aggr); | |
150 | ||
151 | extern struct ospf_external_aggr_rt * | |
152 | ospf_extrenal_aggregator_lookup(struct ospf *ospf, struct prefix_ipv4 *p); | |
153 | ||
154 | void ospf_unset_all_aggr_flag(struct ospf *ospf); | |
423e71c4 | 155 | |
156 | extern int ospf_asbr_external_aggregator_set(struct ospf *ospf, | |
157 | struct prefix_ipv4 *p, | |
158 | route_tag_t tag); | |
159 | extern int ospf_asbr_external_aggregator_unset(struct ospf *ospf, | |
160 | struct prefix_ipv4 *p, | |
161 | route_tag_t tag); | |
162 | extern int ospf_asbr_external_rt_no_advertise(struct ospf *ospf, | |
163 | struct prefix_ipv4 *p); | |
164 | extern int ospf_asbr_external_rt_advertise(struct ospf *ospf, | |
165 | struct prefix_ipv4 *p); | |
718e3744 | 166 | #endif /* _ZEBRA_OSPF_ASBR_H */ |