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
27 #include "ospfd/ospf_packet.h"
28 #include "ospfd/ospf_spf.h"
30 #define IF_OSPF_IF_INFO(I) ((struct ospf_if_info *)((I)->info))
31 #define IF_DEF_PARAMS(I) (IF_OSPF_IF_INFO (I)->def_params)
32 #define IF_OIFS(I) (IF_OSPF_IF_INFO (I)->oifs)
33 #define IF_OIFS_PARAMS(I) (IF_OSPF_IF_INFO (I)->params)
35 #define OSPF_IF_PARAM_CONFIGURED(S, P) ((S) && (S)->P##__config)
36 #define OSPF_IF_PARAM(O, P) \
37 (OSPF_IF_PARAM_CONFIGURED ((O)->params, P)?\
38 (O)->params->P:IF_DEF_PARAMS((O)->ifp)->P)
40 #define DECLARE_IF_PARAM(T, P) T P; u_char P##__config:1
41 #define UNSET_IF_PARAM(S, P) ((S)->P##__config) = 0
42 #define SET_IF_PARAM(S, P) ((S)->P##__config) = 1
46 DECLARE_IF_PARAM (u_int32_t
, transmit_delay
); /* Interface Transmisson Delay */
47 DECLARE_IF_PARAM (u_int32_t
, output_cost_cmd
);/* Command Interface Output Cost */
48 DECLARE_IF_PARAM (u_int32_t
, retransmit_interval
); /* Retransmission Interval */
49 DECLARE_IF_PARAM (u_char
, passive_interface
); /* OSPF Interface is passive: no sending or receiving (no need to join multicast groups) */
50 DECLARE_IF_PARAM (u_char
, priority
); /* OSPF Interface priority */
51 /* Enable OSPF on this interface with area if_area */
52 DECLARE_IF_PARAM (struct in_addr
, if_area
);
53 DECLARE_IF_PARAM (u_char
, type
); /* type of interface */
54 #define OSPF_IF_ACTIVE 0
55 #define OSPF_IF_PASSIVE 1
57 #define OSPF_IF_PASSIVE_STATUS(O) \
58 (OSPF_IF_PARAM_CONFIGURED((O)->params, passive_interface) ? \
59 (O)->params->passive_interface : \
60 (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS((O)->ifp), passive_interface) ? \
61 IF_DEF_PARAMS((O)->ifp)->passive_interface : \
62 (O)->ospf->passive_interface_default))
64 DECLARE_IF_PARAM (u_int32_t
, v_hello
); /* Hello Interval */
65 DECLARE_IF_PARAM (u_int32_t
, v_wait
); /* Router Dead Interval */
67 /* MTU mismatch check (see RFC2328, chap 10.6) */
68 DECLARE_IF_PARAM (u_char
, mtu_ignore
);
71 DECLARE_IF_PARAM (u_char
, fast_hello
);
73 /* Authentication data. */
74 u_char auth_simple
[OSPF_AUTH_SIMPLE_SIZE
+ 1]; /* Simple password. */
75 u_char auth_simple__config
:1;
77 DECLARE_IF_PARAM (struct list
*, auth_crypt
); /* List of Auth cryptographic data. */
78 DECLARE_IF_PARAM (int, auth_type
); /* OSPF authentication type */
80 /* Other, non-configuration state */
81 u_int32_t network_lsa_seqnum
; /* Network LSA seqnum */
83 /* BFD configuration */
84 struct bfd_info
*bfd_info
;
89 MEMBER_ALLROUTERS
= 0,
96 struct ospf_if_params
*def_params
;
97 struct route_table
*params
;
98 struct route_table
*oifs
;
99 unsigned int membership_counts
[MEMBER_MAX
]; /* multicast group refcnts */
102 struct ospf_interface
;
106 struct in_addr vl_peer
; /* Router-ID of the peer for VLs. */
107 struct in_addr vl_area_id
; /* Transit area for this VL. */
108 int format
; /* area ID format */
109 struct ospf_interface
*vl_oi
; /* Interface data structure for the VL. */
110 struct vertex_nexthop nexthop
; /* Nexthop router and oi to use */
111 struct in_addr peer_addr
; /* Address used to reach the peer. */
116 #define OSPF_VL_MAX_COUNT 256
117 #define OSPF_VL_MTU 1500
119 #define OSPF_VL_FLAG_APPROVED 0x01
124 u_char auth_key
[OSPF_AUTH_MD5_SIZE
+ 1];
127 /* OSPF interface structure. */
128 struct ospf_interface
130 /* This interface's parent ospf instance. */
134 struct ospf_area
*area
;
136 /* Position range in Router LSA */
137 uint16_t lsa_pos_beg
; /* inclusive, >= */
138 uint16_t lsa_pos_end
; /* exclusive, < */
140 /* Interface data from zebra. */
141 struct interface
*ifp
;
142 struct ospf_vl_data
*vl_data
; /* Data for Virtual Link */
144 /* Packet send buffer. */
145 struct ospf_fifo
*obuf
; /* Output queue */
147 /* OSPF Network Type. */
150 /* State of Interface State Machine. */
153 /* To which multicast groups do we currently belong? */
154 u_char multicast_memberships
;
155 #define OI_MEMBER_FLAG(M) (1 << (M))
156 #define OI_MEMBER_COUNT(O,M) (IF_OSPF_IF_INFO(oi->ifp)->membership_counts[(M)])
157 #define OI_MEMBER_CHECK(O,M) \
158 (CHECK_FLAG((O)->multicast_memberships, OI_MEMBER_FLAG(M)))
159 #define OI_MEMBER_JOINED(O,M) \
161 SET_FLAG ((O)->multicast_memberships, OI_MEMBER_FLAG(M)); \
162 IF_OSPF_IF_INFO((O)->ifp)->membership_counts[(M)]++; \
164 #define OI_MEMBER_LEFT(O,M) \
166 UNSET_FLAG ((O)->multicast_memberships, OI_MEMBER_FLAG(M)); \
167 IF_OSPF_IF_INFO((O)->ifp)->membership_counts[(M)]--; \
170 struct prefix
*address
; /* Interface prefix */
171 struct connected
*connected
; /* Pointer to connected */
173 /* Configured varables. */
174 struct ospf_if_params
*params
;
176 u_int32_t crypt_seqnum
; /* Cryptographic Sequence Number */
177 u_int32_t output_cost
; /* Acutual Interface Output Cost */
179 /* Neighbor information. */
180 struct route_table
*nbrs
; /* OSPF Neighbor List */
181 struct ospf_neighbor
*nbr_self
; /* Neighbor Self */
182 #define DR(I) ((I)->nbr_self->d_router)
183 #define BDR(I) ((I)->nbr_self->bd_router)
184 #define OPTIONS(I) ((I)->nbr_self->options)
185 #define PRIORITY(I) ((I)->nbr_self->priority)
187 /* List of configured NBMA neighbor. */
188 struct list
*nbr_nbma
;
190 /* self-originated LSAs. */
191 struct ospf_lsa
*network_lsa_self
; /* network-LSA. */
192 struct list
*opaque_lsa_self
; /* Type-9 Opaque-LSAs */
194 struct route_table
*ls_upd_queue
;
196 struct list
*ls_ack
; /* Link State Acknowledgment list. */
205 u_int32_t v_ls_ack
; /* Delayed Link State Acknowledgment */
208 struct thread
*t_hello
; /* timer */
209 struct thread
*t_wait
; /* timer */
210 struct thread
*t_ls_ack
; /* timer */
211 struct thread
*t_ls_ack_direct
; /* event */
212 struct thread
*t_ls_upd_event
; /* event */
213 struct thread
*t_opaque_lsa_self
; /* Type-9 Opaque-LSAs */
217 /* Statistics fields. */
218 u_int32_t hello_in
; /* Hello message input count. */
219 u_int32_t hello_out
; /* Hello message output count. */
220 u_int32_t db_desc_in
; /* database desc. message input count. */
221 u_int32_t db_desc_out
; /* database desc. message output count. */
222 u_int32_t ls_req_in
; /* LS request message input count. */
223 u_int32_t ls_req_out
; /* LS request message output count. */
224 u_int32_t ls_upd_in
; /* LS update message input count. */
225 u_int32_t ls_upd_out
; /* LS update message output count. */
226 u_int32_t ls_ack_in
; /* LS Ack message input count. */
227 u_int32_t ls_ack_out
; /* LS Ack message output count. */
228 u_int32_t discarded
; /* discarded input count by error. */
229 u_int32_t state_change
; /* Number of status change. */
235 DECLARE_QOBJ_TYPE(ospf_interface
)
238 extern char *ospf_if_name (struct ospf_interface
*);
239 extern struct ospf_interface
*ospf_if_new (struct ospf
*, struct interface
*,
241 extern void ospf_if_cleanup (struct ospf_interface
*);
242 extern void ospf_if_free (struct ospf_interface
*);
243 extern int ospf_if_up (struct ospf_interface
*);
244 extern int ospf_if_down (struct ospf_interface
*);
246 extern int ospf_if_is_up (struct ospf_interface
*);
247 extern struct ospf_interface
*ospf_if_exists (struct ospf_interface
*);
248 extern struct ospf_interface
*ospf_if_lookup_by_lsa_pos (struct ospf_area
*,
250 extern struct ospf_interface
*ospf_if_lookup_by_local_addr (struct ospf
*,
254 extern struct ospf_interface
*ospf_if_lookup_by_prefix (struct ospf
*,
255 struct prefix_ipv4
*);
256 extern struct ospf_interface
*ospf_if_table_lookup (struct interface
*,
258 extern struct ospf_interface
*ospf_if_addr_local (struct in_addr
);
259 extern struct ospf_interface
*ospf_if_lookup_recv_if (struct ospf
*,
262 extern struct ospf_interface
*ospf_if_is_configured (struct ospf
*,
265 extern struct ospf_if_params
*ospf_lookup_if_params (struct interface
*,
267 extern struct ospf_if_params
*ospf_get_if_params (struct interface
*,
269 extern void ospf_del_if_params (struct ospf_if_params
*);
270 extern void ospf_free_if_params (struct interface
*, struct in_addr
);
271 extern void ospf_if_update_params (struct interface
*, struct in_addr
);
273 extern int ospf_if_new_hook (struct interface
*);
274 extern void ospf_if_init (void);
275 extern void ospf_if_stream_set (struct ospf_interface
*);
276 extern void ospf_if_stream_unset (struct ospf_interface
*);
277 extern void ospf_if_reset_variables (struct ospf_interface
*);
278 extern int ospf_if_is_enable (struct ospf_interface
*);
279 extern int ospf_if_get_output_cost (struct ospf_interface
*);
280 extern void ospf_if_recalculate_output_cost (struct interface
*);
282 /* Simulate down/up on the interface. */
283 extern void ospf_if_reset (struct interface
*);
285 extern struct ospf_interface
*ospf_vl_new (struct ospf
*,
286 struct ospf_vl_data
*);
287 extern struct ospf_vl_data
*ospf_vl_data_new (struct ospf_area
*,
289 extern struct ospf_vl_data
*ospf_vl_lookup (struct ospf
*, struct ospf_area
*,
291 extern void ospf_vl_data_free (struct ospf_vl_data
*);
292 extern void ospf_vl_add (struct ospf
*, struct ospf_vl_data
*);
293 extern void ospf_vl_delete (struct ospf
*, struct ospf_vl_data
*);
294 extern void ospf_vl_up_check (struct ospf_area
*, struct in_addr
,
296 extern void ospf_vl_unapprove (struct ospf
*);
297 extern void ospf_vl_shut_unapproved (struct ospf
*);
298 extern int ospf_full_virtual_nbrs (struct ospf_area
*);
299 extern int ospf_vls_in_area (struct ospf_area
*);
301 extern struct crypt_key
*ospf_crypt_key_lookup (struct list
*, u_char
);
302 extern struct crypt_key
*ospf_crypt_key_new (void);
303 extern void ospf_crypt_key_add (struct list
*, struct crypt_key
*);
304 extern int ospf_crypt_key_delete (struct list
*, u_char
);
306 extern u_char
ospf_default_iftype (struct interface
*ifp
);
308 /* Set all multicast memberships appropriately based on the type and
309 state of the interface. */
310 extern void ospf_if_set_multicast (struct ospf_interface
*);
312 #endif /* _ZEBRA_OSPF_INTERFACE_H */