/* reset nbr_self */
void ospf_nbr_self_reset(struct ospf_interface *oi, struct in_addr router_id)
{
if (oi->nbr_self)
ospf_nbr_delete(oi->nbr_self);
oi->nbr_self = ospf_nbr_new(oi);
ospf_nbr_add_self(oi, router_id);
}
struct ospf_interface *
ospf_if_new (struct ospf *ospf, struct interface_FOO *ifp, struct prefix *p)
{
struct ospf_interface *oi;
if ((oi = ospf_if_table_lookup (ifp, p)) == NULL)
{
oi = XCALLOC (MTYPE_OSPF_IF, sizeof (struct ospf_interface));
memset (oi, 0, sizeof (struct ospf_interface));
}
else
return oi;
/* Set zebra interface pointer. */
oi->ifp = ifp;
oi->address = p;
ospf_add_to_if (ifp, oi);
listnode_add (ospf->oiflist, oi);
/* Clear self-originated network-LSA. */
oi->network_lsa_self = NULL;
/* Initialize neighbor list. */
oi->nbrs = route_table_init ();
/* Initialize static neighbor list. */
oi->nbr_nbma = list_new ();
/* Initialize Link State Acknowledgment list. */
oi->ls_ack = list_new ();
oi->ls_ack_direct.ls_ack = list_new ();
/* Set default values. */
ospf_if_reset_variables (oi);
/* Add pseudo neighbor. */
oi->nbr_self = ospf_nbr_new (oi);
oi->nbr_self->state = NSM_TwoWay;
oi->nbr_self->priority = OSPF_IF_PARAM (oi, priority);
oi->nbr_self->options = OSPF_OPTION_E;
oi->ls_upd_queue = route_table_init ();
oi->t_ls_upd_event = NULL;
oi->t_ls_ack_direct = NULL;
oi->crypt_seqnum = time (NULL);
#ifdef HAVE_OPAQUE_LSA
ospf_opaque_type9_lsa_init (oi);
#endif /* HAVE_OPAQUE_LSA */
oi->ospf = ospf;
return oi;
}
/* Restore an interface to its pre UP state
Used from ism_interface_down only */
void
ospf_if_cleanup (struct ospf_interface *oi)
{
struct route_node *rn;
struct listnode *node, *nnode;
struct ospf_neighbor *nbr;
struct ospf_nbr_nbma *nbr_nbma;
struct ospf_lsa *lsa;
/* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */
/* delete all static neighbors attached to this interface */
for (ALL_LIST_ELEMENTS (oi->nbr_nbma, node, nnode, nbr_nbma))
{
OSPF_POLL_TIMER_OFF (nbr_nbma->t_poll);
if (nbr_nbma->nbr)
{
nbr_nbma->nbr->nbr_nbma = NULL;
nbr_nbma->nbr = NULL;
}
nbr_nbma->oi = NULL;
listnode_delete (oi->nbr_nbma, nbr_nbma);
}
/* send Neighbor event KillNbr to all associated neighbors. */
for (rn = route_top (oi->nbrs); rn; rn = route_next (rn))
if ((nbr = rn->info) != NULL)
if (nbr != oi->nbr_self)
OSPF_NSM_EVENT_EXECUTE (nbr, NSM_KillNbr);
/* Cleanup Link State Acknowlegdment list. */
for (ALL_LIST_ELEMENTS (oi->ls_ack, node, nnode, lsa))
ospf_lsa_unlock (&lsa); /* oi->ls_ack */
list_delete_all_node (oi->ls_ack);
oi->crypt_seqnum = 0;
/* Empty link state update queue */
ospf_ls_upd_queue_empty (oi);
/* Reset pseudo neighbor. */
ospf_nbr_delete (oi->nbr_self);
oi->nbr_self = ospf_nbr_new (oi);
ospf_nbr_add_self (oi);
ospf_lsa_unlock (&oi->network_lsa_self);
oi->network_lsa_self = NULL;
OSPF_TIMER_OFF (oi->t_network_lsa_self);
#ifdef HAVE_GRACEFUL_RESTART
THREAD_TIMER_OFF(oi->t_opaque_lsa_refresh);
oi->v_opaque_lsa_count = 0 ;
#endif
}
struct ospf_interface *
ospf_if_new (struct ospf *ospf, struct interface *ifp, struct prefix *p)
{
struct ospf_interface *oi;
if ((oi = ospf_if_table_lookup (ifp, p)) == NULL)
{
oi = XCALLOC (MTYPE_OSPF_IF, sizeof (struct ospf_interface));
memset (oi, 0, sizeof (struct ospf_interface));
}
else
return oi;
/* Set zebra interface pointer. */
oi->ifp = ifp;
oi->address = p;
ospf_add_to_if (ifp, oi);
listnode_add (ospf->oiflist, oi);
/* Initialize neighbor list. */
oi->nbrs = route_table_init ();
/* Initialize static neighbor list. */
oi->nbr_nbma = list_new ();
/* Initialize Link State Acknowledgment list. */
oi->ls_ack = list_new ();
oi->ls_ack_direct.ls_ack = list_new ();
/* Set default values. */
ospf_if_reset_variables (oi);
/* Add pseudo neighbor. */
oi->nbr_self = ospf_nbr_new (oi);
oi->ls_upd_queue = route_table_init ();
oi->t_ls_upd_event = NULL;
oi->t_ls_ack_direct = NULL;
oi->crypt_seqnum = time (NULL);
ospf_opaque_type9_lsa_init (oi);
oi->ospf = ospf;
return oi;
}
static struct ospf_neighbor *
ospf_nbr_add (struct ospf_interface *oi, struct ospf_header *ospfh,
struct prefix *p)
{
struct ospf_neighbor *nbr;
nbr = ospf_nbr_new (oi);
nbr->state = NSM_Down;
nbr->src = p->u.prefix4;
memcpy (&nbr->address, p, sizeof (struct prefix));
nbr->nbr_nbma = NULL;
if (oi->type == OSPF_IFTYPE_NBMA)
{
struct ospf_nbr_nbma *nbr_nbma;
struct listnode *node;
for (ALL_LIST_ELEMENTS_RO (oi->nbr_nbma, node, nbr_nbma))
{
if (IPV4_ADDR_SAME(&nbr_nbma->addr, &nbr->src))
{
nbr_nbma->nbr = nbr;
nbr->nbr_nbma = nbr_nbma;
if (nbr_nbma->t_poll)
OSPF_POLL_TIMER_OFF (nbr_nbma->t_poll);
nbr->state_change = nbr_nbma->state_change + 1;
}
}
}
/* New nbr, save the crypto sequence number if necessary */
if (ntohs (ospfh->auth_type) == OSPF_AUTH_CRYPTOGRAPHIC)
nbr->crypt_seqnum = ospfh->u.crypt.crypt_seqnum;
if (IS_DEBUG_OSPF_EVENT)
zlog_debug ("NSM[%s:%s]: start", IF_NAME (nbr->oi),
inet_ntoa (nbr->router_id));
return nbr;
}
/* Add self to nbr list. */
void ospf_nbr_add_self(struct ospf_interface *oi, struct in_addr router_id)
{
struct prefix p;
struct route_node *rn;
if (!oi->nbr_self)
oi->nbr_self = ospf_nbr_new(oi);
/* Initial state */
oi->nbr_self->address = *oi->address;
oi->nbr_self->priority = OSPF_IF_PARAM(oi, priority);
oi->nbr_self->router_id = router_id;
oi->nbr_self->src = oi->address->u.prefix4;
oi->nbr_self->state = NSM_TwoWay;
switch (oi->area->external_routing) {
case OSPF_AREA_DEFAULT:
SET_FLAG(oi->nbr_self->options, OSPF_OPTION_E);
break;
case OSPF_AREA_STUB:
UNSET_FLAG(oi->nbr_self->options, OSPF_OPTION_E);
break;
case OSPF_AREA_NSSA:
UNSET_FLAG(oi->nbr_self->options, OSPF_OPTION_E);
SET_FLAG(oi->nbr_self->options, OSPF_OPTION_NP);
break;
}
/* Add nbr_self to nbrs table */
ospf_nbr_key(oi, oi->nbr_self, &p);
rn = route_node_get(oi->nbrs, &p);
if (rn->info) {
/* There is already pseudo neighbor. */
zlog_warn(
"router_id %s already present in neighbor table. node refcount %u",
inet_ntoa(router_id), rn->lock);
route_unlock_node(rn);
} else
rn->info = oi->nbr_self;
}
/* Restore an interface to its pre UP state
Used from ism_interface_down only */
void
ospf_if_cleanup (struct ospf_interface *oi)
{
struct route_node *rn;
struct listnode *node;
struct ospf_neighbor *nbr;
/* oi->nbrs and oi->nbr_nbma should be deletete on InterafceDown event */
/* delete all static neighbors attached to this interface */
for (node = listhead (oi->nbr_nbma); node; )
{
struct ospf_nbr_nbma *nbr_nbma = getdata (node);
nextnode (node);
OSPF_POLL_TIMER_OFF (nbr_nbma->t_poll);
if (nbr_nbma->nbr)
{
nbr_nbma->nbr->nbr_nbma = NULL;
nbr_nbma->nbr = NULL;
}
nbr_nbma->oi = NULL;
listnode_delete (oi->nbr_nbma, nbr_nbma);
}
/* send Neighbor event KillNbr to all associated neighbors. */
for (rn = route_top (oi->nbrs); rn; rn = route_next (rn))
if ((nbr = rn->info) != NULL)
if (nbr != oi->nbr_self)
OSPF_NSM_EVENT_EXECUTE (nbr, NSM_KillNbr);
/* Cleanup Link State Acknowlegdment list. */
for (node = listhead (oi->ls_ack); node; nextnode (node))
ospf_lsa_unlock (node->data);
list_delete_all_node (oi->ls_ack);
oi->crypt_seqnum = 0;
/* Empty link state update queue */
ospf_ls_upd_queue_empty (oi);
/* Handle pseudo neighbor. */
ospf_nbr_delete (oi->nbr_self);
oi->nbr_self = ospf_nbr_new (oi);
oi->nbr_self->state = NSM_TwoWay;
oi->nbr_self->priority = OSPF_IF_PARAM (oi, priority);
switch (oi->area->external_routing)
{
case OSPF_AREA_DEFAULT:
SET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
break;
case OSPF_AREA_STUB:
UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
break;
case OSPF_AREA_NSSA:
UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
SET_FLAG (oi->nbr_self->options, OSPF_OPTION_NP);
break;
}
ospf_lsa_unlock (oi->network_lsa_self);
oi->network_lsa_self = NULL;
OSPF_TIMER_OFF (oi->t_network_lsa_self);
}
struct ospf_interface *
ospf_if_new (struct ospf *ospf, struct interface *ifp, struct prefix *p)
{
struct ospf_interface *oi;
struct ifreq ifreq;
int liteid;
if ((oi = ospf_if_table_lookup (ifp, p)) == NULL)
{
oi = XCALLOC (MTYPE_OSPF_IF, sizeof (struct ospf_interface));
memset (oi, 0, sizeof (struct ospf_interface));
}
else
return oi;
/* Set zebra interface pointer. */
oi->ifp = ifp;
oi->address = p;
ospf_add_to_if (ifp, oi);
listnode_add (ospf->oiflist, oi);
/* Clear self-originated network-LSA. */
oi->network_lsa_self = NULL;
/* Initialize neighbor list. */
oi->nbrs = route_table_init ();
/* Initialize static neighbor list. */
oi->nbr_nbma = list_new ();
/* Initialize Link State Acknowledgment list. */
oi->ls_ack = list_new ();
oi->ls_ack_direct.ls_ack = list_new ();
/* Set default values. */
ospf_if_reset_variables (oi);
/* Add pseudo neighbor. */
oi->nbr_self = ospf_nbr_new (oi);
oi->ls_upd_queue = route_table_init ();
oi->t_ls_upd_event = NULL;
oi->t_ls_ack_direct = NULL;
oi->crypt_seqnum = time (NULL);
#ifdef HAVE_OPAQUE_LSA
ospf_opaque_type9_lsa_init (oi);
#ifdef HAVE_GRACEFUL_RESTART
oi->gr_helping_list= list_new();
oi->gr_lsa = NULL;
oi->t_opaque_lsa_refresh = NULL;
#endif
#endif /* HAVE_OPAQUE_LSA */
oi->ospf = ospf;
if((oi->packet_fd = ospf_sock_init(OSPF_IP_OTHER_PACKET))<0)
{
exit(1);
}
liteid = oi->ospf->litevrfid;
setsockopt (oi->packet_fd, SOL_SOCKET, SO_SET_LITEVRFID, (char *)
&liteid, sizeof (int));
strncpy ((char *)&ifreq.ifr_name,ifp->name,sizeof(ifreq.ifr_name));
setsockopt (oi->packet_fd, SOL_SOCKET, SO_BINDTODEVICE, &ifreq, sizeof (ifreq));
if(oi->t_packet_read == NULL)
oi->t_packet_read = thread_add_read (master, ospf_read_oisock, oi, oi->packet_fd);
return oi;
}
