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/*
* Copyright (C) 2003 Yasuhiro Ohara
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef OSPF6_NEIGHBOR_H
#define OSPF6_NEIGHBOR_H
#include "hook.h"
/* Forward declaration(s). */
struct ospf6_area;
/* Debug option */
extern unsigned char conf_debug_ospf6_neighbor;
#define OSPF6_DEBUG_NEIGHBOR_STATE 0x01
#define OSPF6_DEBUG_NEIGHBOR_EVENT 0x02
#define OSPF6_DEBUG_NEIGHBOR_ON(level) (conf_debug_ospf6_neighbor |= (level))
#define OSPF6_DEBUG_NEIGHBOR_OFF(level) (conf_debug_ospf6_neighbor &= ~(level))
#define IS_OSPF6_DEBUG_NEIGHBOR(level) \
(conf_debug_ospf6_neighbor & OSPF6_DEBUG_NEIGHBOR_##level)
struct ospf6_helper_info {
/* Grace interval received from
* Restarting Router.
*/
uint32_t recvd_grace_period;
/* Grace interval used for grace
* gracetimer.
*/
uint32_t actual_grace_period;
/* Grace timer,This Router acts as
* helper until this timer until
* this timer expires.
*/
struct thread *t_grace_timer;
/* Helper status */
uint32_t gr_helper_status;
/* Helper exit reason*/
uint32_t helper_exit_reason;
/* Planned/Unplanned restart*/
uint32_t gr_restart_reason;
/* Helper rejected reason */
uint32_t rejected_reason;
};
/* Neighbor structure */
struct ospf6_neighbor {
/* Neighbor Router ID String */
char name[36];
/* OSPFv3 Interface this neighbor belongs to */
struct ospf6_interface *ospf6_if;
/* Neighbor state */
uint8_t state;
/* timestamp of last changing state */
uint32_t state_change;
struct timeval last_changed;
/* last received hello */
struct timeval last_hello;
uint32_t hello_in;
/* Neighbor Router ID */
in_addr_t router_id;
/* Neighbor Interface ID */
ifindex_t ifindex;
/* Router Priority of this neighbor */
uint8_t priority;
in_addr_t drouter;
in_addr_t bdrouter;
in_addr_t prev_drouter;
in_addr_t prev_bdrouter;
/* Options field (Capability) */
char options[3];
/* IPaddr of I/F on neighbour's link */
struct in6_addr linklocal_addr;
/* For Database Exchange */
uint8_t dbdesc_bits;
uint32_t dbdesc_seqnum;
/* Last received Database Description packet */
struct ospf6_dbdesc dbdesc_last;
/* LS-list */
struct ospf6_lsdb *summary_list;
struct ospf6_lsdb *request_list;
struct ospf6_lsdb *retrans_list;
/* LSA list for message transmission */
struct ospf6_lsdb *dbdesc_list;
struct ospf6_lsdb *lsreq_list;
struct ospf6_lsdb *lsupdate_list;
struct ospf6_lsdb *lsack_list;
struct ospf6_lsa *last_ls_req;
/* Inactivity timer */
struct thread *inactivity_timer;
/* Timer to release the last dbdesc packet */
struct thread *last_dbdesc_release_timer;
/* Thread for sending message */
struct thread *thread_send_dbdesc;
struct thread *thread_send_lsreq;
struct thread *thread_send_lsupdate;
struct thread *thread_send_lsack;
struct thread *thread_exchange_done;
/* BFD information */
struct bfd_session_params *bfd_session;
/* ospf6 graceful restart HELPER info */
struct ospf6_helper_info gr_helper_info;
};
/* Neighbor state */
#define OSPF6_NEIGHBOR_DOWN 1
#define OSPF6_NEIGHBOR_ATTEMPT 2
#define OSPF6_NEIGHBOR_INIT 3
#define OSPF6_NEIGHBOR_TWOWAY 4
#define OSPF6_NEIGHBOR_EXSTART 5
#define OSPF6_NEIGHBOR_EXCHANGE 6
#define OSPF6_NEIGHBOR_LOADING 7
#define OSPF6_NEIGHBOR_FULL 8
/* Neighbor Events */
#define OSPF6_NEIGHBOR_EVENT_NO_EVENT 0
#define OSPF6_NEIGHBOR_EVENT_HELLO_RCVD 1
#define OSPF6_NEIGHBOR_EVENT_TWOWAY_RCVD 2
#define OSPF6_NEIGHBOR_EVENT_NEGOTIATION_DONE 3
#define OSPF6_NEIGHBOR_EVENT_EXCHANGE_DONE 4
#define OSPF6_NEIGHBOR_EVENT_LOADING_DONE 5
#define OSPF6_NEIGHBOR_EVENT_ADJ_OK 6
#define OSPF6_NEIGHBOR_EVENT_SEQNUMBER_MISMATCH 7
#define OSPF6_NEIGHBOR_EVENT_BAD_LSREQ 8
#define OSPF6_NEIGHBOR_EVENT_ONEWAY_RCVD 9
#define OSPF6_NEIGHBOR_EVENT_INACTIVITY_TIMER 10
#define OSPF6_NEIGHBOR_EVENT_MAX_EVENT 11
extern const char *const ospf6_neighbor_event_str[];
static inline const char *ospf6_neighbor_event_string(int event)
{
#define OSPF6_NEIGHBOR_UNKNOWN_EVENT_STRING "UnknownEvent"
if (event < OSPF6_NEIGHBOR_EVENT_MAX_EVENT)
return ospf6_neighbor_event_str[event];
return OSPF6_NEIGHBOR_UNKNOWN_EVENT_STRING;
}
extern const char *const ospf6_neighbor_state_str[];
/* Function Prototypes */
int ospf6_neighbor_cmp(void *va, void *vb);
void ospf6_neighbor_dbex_init(struct ospf6_neighbor *on);
struct ospf6_neighbor *ospf6_neighbor_lookup(uint32_t router_id,
struct ospf6_interface *oi);
struct ospf6_neighbor *ospf6_area_neighbor_lookup(struct ospf6_area *area,
uint32_t router_id);
struct ospf6_neighbor *ospf6_neighbor_create(uint32_t router_id,
struct ospf6_interface *oi);
void ospf6_neighbor_delete(struct ospf6_neighbor *on);
/* Neighbor event */
extern int hello_received(struct thread *thread);
extern int twoway_received(struct thread *thread);
extern int negotiation_done(struct thread *thread);
extern int exchange_done(struct thread *thread);
extern int loading_done(struct thread *thread);
extern int adj_ok(struct thread *thread);
extern int seqnumber_mismatch(struct thread *thread);
extern int bad_lsreq(struct thread *thread);
extern int oneway_received(struct thread *thread);
extern int inactivity_timer(struct thread *thread);
extern void ospf6_check_nbr_loading(struct ospf6_neighbor *on);
extern void ospf6_neighbor_init(void);
extern int config_write_ospf6_debug_neighbor(struct vty *vty);
extern void install_element_ospf6_debug_neighbor(void);
DECLARE_HOOK(ospf6_neighbor_change,
(struct ospf6_neighbor * on, int state, int next_state),
(on, state, next_state));
#endif /* OSPF6_NEIGHBOR_H */
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