diff options
Diffstat (limited to 'ospf6d/ospf6_neighbor.h')
| -rw-r--r-- | ospf6d/ospf6_neighbor.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/ospf6d/ospf6_neighbor.h b/ospf6d/ospf6_neighbor.h new file mode 100644 index 0000000..226f4c1 --- /dev/null +++ b/ospf6d/ospf6_neighbor.h @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2003 Yasuhiro Ohara + */ + +#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 event *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 event *inactivity_timer; + + /* Timer to release the last dbdesc packet */ + struct event *last_dbdesc_release_timer; + + /* Thread for sending message */ + struct event *thread_send_dbdesc; + struct event *thread_send_lsreq; + struct event *thread_send_lsupdate; + struct event *thread_send_lsack; + struct event *thread_exchange_done; + struct event *thread_adj_ok; + struct event *event_loading_done; + + /* BFD information */ + struct bfd_session_params *bfd_session; + + /* ospf6 graceful restart HELPER info */ + struct ospf6_helper_info gr_helper_info; + + /* seqnum_h/l is used to compare sequence + * number in received packet Auth header + */ + uint32_t seqnum_h[OSPF6_MESSAGE_TYPE_MAX]; + uint32_t seqnum_l[OSPF6_MESSAGE_TYPE_MAX]; + bool auth_present; + bool lls_present; +}; + +/* 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 void hello_received(struct event *thread); +extern void twoway_received(struct event *thread); +extern void negotiation_done(struct event *thread); +extern void exchange_done(struct event *thread); +extern void loading_done(struct event *thread); +extern void adj_ok(struct event *thread); +extern void seqnumber_mismatch(struct event *thread); +extern void bad_lsreq(struct event *thread); +extern void oneway_received(struct event *thread); +extern void inactivity_timer(struct event *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 */ |