2 * OSPF Interface functions.
3 * Copyright (C) 1999 Toshiaki Takada
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; either version 2, or (at your
10 * option) any later version.
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.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING. If not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #ifndef _ZEBRA_OSPF_INTERFACE_H
24 #define _ZEBRA_OSPF_INTERFACE_H
26 #include "ospfd/ospf_packet.h"
27 #include "ospfd/ospf_spf.h"
29 #define IF_OSPF_IF_INFO(I) ((struct ospf_if_info *)((I)->info))
30 #define IF_DEF_PARAMS(I) (IF_OSPF_IF_INFO (I)->def_params)
31 #define IF_OIFS(I) (IF_OSPF_IF_INFO (I)->oifs)
32 #define IF_OIFS_PARAMS(I) (IF_OSPF_IF_INFO (I)->params)
34 #define OSPF_IF_PARAM_CONFIGURED(S, P) ((S) && (S)->P##__config)
35 #define OSPF_IF_PARAM(O, P) \
36 (OSPF_IF_PARAM_CONFIGURED ((O)->params, P)?\
37 (O)->params->P:IF_DEF_PARAMS((O)->ifp)->P)
39 #define DECLARE_IF_PARAM(T, P) T P; u_char P##__config:1
40 #define UNSET_IF_PARAM(S, P) ((S)->P##__config) = 0
41 #define SET_IF_PARAM(S, P) ((S)->P##__config) = 1
45 DECLARE_IF_PARAM (u_int32_t
, transmit_delay
); /* Interface Transmisson Delay */
46 DECLARE_IF_PARAM (u_int32_t
, output_cost_cmd
);/* Command Interface Output Cost */
47 DECLARE_IF_PARAM (u_int32_t
, retransmit_interval
); /* Retransmission Interval */
48 DECLARE_IF_PARAM (u_char
, passive_interface
); /* OSPF Interface is passive: no sending or receiving (no need to join multicast groups) */
49 DECLARE_IF_PARAM (u_char
, priority
); /* OSPF Interface priority */
50 /* Enable OSPF on this interface with area if_area */
51 DECLARE_IF_PARAM (struct in_addr
, if_area
);
52 DECLARE_IF_PARAM (u_char
, type
); /* type of interface */
53 #define OSPF_IF_ACTIVE 0
54 #define OSPF_IF_PASSIVE 1
56 #define OSPF_IF_PASSIVE_STATUS(O) \
57 (OSPF_IF_PARAM_CONFIGURED((O)->params, passive_interface) ? \
58 (O)->params->passive_interface : \
59 (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS((O)->ifp), passive_interface) ? \
60 IF_DEF_PARAMS((O)->ifp)->passive_interface : \
61 (O)->ospf->passive_interface_default))
63 DECLARE_IF_PARAM (u_int32_t
, v_hello
); /* Hello Interval */
64 DECLARE_IF_PARAM (u_int32_t
, v_wait
); /* Router Dead Interval */
66 /* MTU mismatch check (see RFC2328, chap 10.6) */
67 DECLARE_IF_PARAM (u_char
, mtu_ignore
);
70 DECLARE_IF_PARAM (u_char
, fast_hello
);
72 /* Authentication data. */
73 u_char auth_simple
[OSPF_AUTH_SIMPLE_SIZE
+ 1]; /* Simple password. */
74 u_char auth_simple__config
:1;
76 DECLARE_IF_PARAM (struct list
*, auth_crypt
); /* List of Auth cryptographic data. */
77 DECLARE_IF_PARAM (int, auth_type
); /* OSPF authentication type */
79 /* Other, non-configuration state */
80 u_int32_t network_lsa_seqnum
; /* Network LSA seqnum */
82 /* BFD configuration */
83 struct bfd_info
*bfd_info
;
88 MEMBER_ALLROUTERS
= 0,
95 struct ospf_if_params
*def_params
;
96 struct route_table
*params
;
97 struct route_table
*oifs
;
98 unsigned int membership_counts
[MEMBER_MAX
]; /* multicast group refcnts */
101 struct ospf_interface
;
105 struct in_addr vl_peer
; /* Router-ID of the peer for VLs. */
106 struct in_addr vl_area_id
; /* Transit area for this VL. */
107 int format
; /* area ID format */
108 struct ospf_interface
*vl_oi
; /* Interface data structure for the VL. */
109 struct vertex_nexthop nexthop
; /* Nexthop router and oi to use */
110 struct in_addr peer_addr
; /* Address used to reach the peer. */
115 #define OSPF_VL_MAX_COUNT 256
116 #define OSPF_VL_MTU 1500
118 #define OSPF_VL_FLAG_APPROVED 0x01
123 u_char auth_key
[OSPF_AUTH_MD5_SIZE
+ 1];
126 /* OSPF interface structure. */
127 struct ospf_interface
129 /* This interface's parent ospf instance. */
133 struct ospf_area
*area
;
135 /* Position range in Router LSA */
136 uint16_t lsa_pos_beg
; /* inclusive, >= */
137 uint16_t lsa_pos_end
; /* exclusive, < */
139 /* Interface data from zebra. */
140 struct interface
*ifp
;
141 struct ospf_vl_data
*vl_data
; /* Data for Virtual Link */
143 /* Packet send buffer. */
144 struct ospf_fifo
*obuf
; /* Output queue */
146 /* OSPF Network Type. */
149 /* State of Interface State Machine. */
152 /* To which multicast groups do we currently belong? */
153 u_char multicast_memberships
;
154 #define OI_MEMBER_FLAG(M) (1 << (M))
155 #define OI_MEMBER_COUNT(O,M) (IF_OSPF_IF_INFO(oi->ifp)->membership_counts[(M)])
156 #define OI_MEMBER_CHECK(O,M) \
157 (CHECK_FLAG((O)->multicast_memberships, OI_MEMBER_FLAG(M)))
158 #define OI_MEMBER_JOINED(O,M) \
160 SET_FLAG ((O)->multicast_memberships, OI_MEMBER_FLAG(M)); \
161 IF_OSPF_IF_INFO((O)->ifp)->membership_counts[(M)]++; \
163 #define OI_MEMBER_LEFT(O,M) \
165 UNSET_FLAG ((O)->multicast_memberships, OI_MEMBER_FLAG(M)); \
166 IF_OSPF_IF_INFO((O)->ifp)->membership_counts[(M)]--; \
169 struct prefix
*address
; /* Interface prefix */
170 struct connected
*connected
; /* Pointer to connected */
172 /* Configured varables. */
173 struct ospf_if_params
*params
;
175 u_int32_t crypt_seqnum
; /* Cryptographic Sequence Number */
176 u_int32_t output_cost
; /* Acutual Interface Output Cost */
178 /* Neighbor information. */
179 struct route_table
*nbrs
; /* OSPF Neighbor List */
180 struct ospf_neighbor
*nbr_self
; /* Neighbor Self */
181 #define DR(I) ((I)->nbr_self->d_router)
182 #define BDR(I) ((I)->nbr_self->bd_router)
183 #define OPTIONS(I) ((I)->nbr_self->options)
184 #define PRIORITY(I) ((I)->nbr_self->priority)
186 /* List of configured NBMA neighbor. */
187 struct list
*nbr_nbma
;
189 /* self-originated LSAs. */
190 struct ospf_lsa
*network_lsa_self
; /* network-LSA. */
191 struct list
*opaque_lsa_self
; /* Type-9 Opaque-LSAs */
193 struct route_table
*ls_upd_queue
;
195 struct list
*ls_ack
; /* Link State Acknowledgment list. */
204 u_int32_t v_ls_ack
; /* Delayed Link State Acknowledgment */
207 struct thread
*t_hello
; /* timer */
208 struct thread
*t_wait
; /* timer */
209 struct thread
*t_ls_ack
; /* timer */
210 struct thread
*t_ls_ack_direct
; /* event */
211 struct thread
*t_ls_upd_event
; /* event */
212 struct thread
*t_opaque_lsa_self
; /* Type-9 Opaque-LSAs */
216 /* Statistics fields. */
217 u_int32_t hello_in
; /* Hello message input count. */
218 u_int32_t hello_out
; /* Hello message output count. */
219 u_int32_t db_desc_in
; /* database desc. message input count. */
220 u_int32_t db_desc_out
; /* database desc. message output count. */
221 u_int32_t ls_req_in
; /* LS request message input count. */
222 u_int32_t ls_req_out
; /* LS request message output count. */
223 u_int32_t ls_upd_in
; /* LS update message input count. */
224 u_int32_t ls_upd_out
; /* LS update message output count. */
225 u_int32_t ls_ack_in
; /* LS Ack message input count. */
226 u_int32_t ls_ack_out
; /* LS Ack message output count. */
227 u_int32_t discarded
; /* discarded input count by error. */
228 u_int32_t state_change
; /* Number of status change. */
234 extern char *ospf_if_name (struct ospf_interface
*);
235 extern struct ospf_interface
*ospf_if_new (struct ospf
*, struct interface
*,
237 extern void ospf_if_cleanup (struct ospf_interface
*);
238 extern void ospf_if_free (struct ospf_interface
*);
239 extern int ospf_if_up (struct ospf_interface
*);
240 extern int ospf_if_down (struct ospf_interface
*);
242 extern int ospf_if_is_up (struct ospf_interface
*);
243 extern struct ospf_interface
*ospf_if_exists (struct ospf_interface
*);
244 extern struct ospf_interface
*ospf_if_lookup_by_lsa_pos (struct ospf_area
*,
246 extern struct ospf_interface
*ospf_if_lookup_by_local_addr (struct ospf
*,
250 extern struct ospf_interface
*ospf_if_lookup_by_prefix (struct ospf
*,
251 struct prefix_ipv4
*);
252 extern struct ospf_interface
*ospf_if_table_lookup (struct interface
*,
254 extern struct ospf_interface
*ospf_if_addr_local (struct in_addr
);
255 extern struct ospf_interface
*ospf_if_lookup_recv_if (struct ospf
*,
258 extern struct ospf_interface
*ospf_if_is_configured (struct ospf
*,
261 extern struct ospf_if_params
*ospf_lookup_if_params (struct interface
*,
263 extern struct ospf_if_params
*ospf_get_if_params (struct interface
*,
265 extern void ospf_del_if_params (struct ospf_if_params
*);
266 extern void ospf_free_if_params (struct interface
*, struct in_addr
);
267 extern void ospf_if_update_params (struct interface
*, struct in_addr
);
269 extern int ospf_if_new_hook (struct interface
*);
270 extern void ospf_if_init (void);
271 extern void ospf_if_stream_set (struct ospf_interface
*);
272 extern void ospf_if_stream_unset (struct ospf_interface
*);
273 extern void ospf_if_reset_variables (struct ospf_interface
*);
274 extern int ospf_if_is_enable (struct ospf_interface
*);
275 extern int ospf_if_get_output_cost (struct ospf_interface
*);
276 extern void ospf_if_recalculate_output_cost (struct interface
*);
278 /* Simulate down/up on the interface. */
279 extern void ospf_if_reset (struct interface
*);
281 extern struct ospf_interface
*ospf_vl_new (struct ospf
*,
282 struct ospf_vl_data
*);
283 extern struct ospf_vl_data
*ospf_vl_data_new (struct ospf_area
*,
285 extern struct ospf_vl_data
*ospf_vl_lookup (struct ospf
*, struct ospf_area
*,
287 extern void ospf_vl_data_free (struct ospf_vl_data
*);
288 extern void ospf_vl_add (struct ospf
*, struct ospf_vl_data
*);
289 extern void ospf_vl_delete (struct ospf
*, struct ospf_vl_data
*);
290 extern void ospf_vl_up_check (struct ospf_area
*, struct in_addr
,
292 extern void ospf_vl_unapprove (struct ospf
*);
293 extern void ospf_vl_shut_unapproved (struct ospf
*);
294 extern int ospf_full_virtual_nbrs (struct ospf_area
*);
295 extern int ospf_vls_in_area (struct ospf_area
*);
297 extern struct crypt_key
*ospf_crypt_key_lookup (struct list
*, u_char
);
298 extern struct crypt_key
*ospf_crypt_key_new (void);
299 extern void ospf_crypt_key_add (struct list
*, struct crypt_key
*);
300 extern int ospf_crypt_key_delete (struct list
*, u_char
);
302 extern u_char
ospf_default_iftype (struct interface
*ifp
);
304 /* Set all multicast memberships appropriately based on the type and
305 state of the interface. */
306 extern void ospf_if_set_multicast (struct ospf_interface
*);
308 #endif /* _ZEBRA_OSPF_INTERFACE_H */