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d3f0d62101
* ospf_packet.c: (ospf_associate_packet_vl) cleanup, move
some of the checks up to ospf_read, return either a
virtual link oi, or NULL.
(ospf_read) Cleanup, make it responsible for checks. Remove
the nbr lookup - moved to ospf_neighbor. Adjust all nbr
lookups to use new wrappers exported by ospf_neighbor.
* ospf_neighbor.h: Add ospf_neigbour_get and ospf_nbr_lookup.
* ospf_neighbor.c: (ospf_neigbour_get) Index ospf_interface
neighbour table by router-id for virtual-link ospf_interfaces,
not by peer_addr (which breaks for asymmetric vlinks)
(ospf_nbr_lookup) add a wrapper for nbr lookups to deal with
above.
115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*
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* OSPF Neighbor functions.
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* Copyright (C) 1999, 2000 Toshiaki Takada
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2, or (at your
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* option) any later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef _ZEBRA_OSPF_NEIGHBOR_H
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#define _ZEBRA_OSPF_NEIGHBOR_H
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#include <ospfd/ospf_packet.h>
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/* Neighbor Data Structure */
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struct ospf_neighbor
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{
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/* This neighbor's parent ospf interface. */
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struct ospf_interface *oi;
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/* OSPF neighbor Information */
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u_char state; /* NSM status. */
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u_char dd_flags; /* DD bit flags. */
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u_int32_t dd_seqnum; /* DD Sequence Number. */
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/* Neighbor Information from Hello. */
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struct prefix address; /* Neighbor Interface Address. */
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struct in_addr src; /* Src address. */
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struct in_addr router_id; /* Router ID. */
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u_char options; /* Options. */
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int priority; /* Router Priority. */
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struct in_addr d_router; /* Designated Router. */
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struct in_addr bd_router; /* Backup Designated Router. */
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/* Last sent Database Description packet. */
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struct ospf_packet *last_send;
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/* Timestemp when last Database Description packet was sent */
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struct timeval last_send_ts;
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/* Last received Databse Description packet. */
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struct
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{
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u_char options;
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u_char flags;
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u_int32_t dd_seqnum;
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} last_recv;
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/* LSA data. */
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struct ospf_lsdb ls_rxmt;
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struct ospf_lsdb db_sum;
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struct ospf_lsdb ls_req;
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struct ospf_lsa *ls_req_last;
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u_int32_t crypt_seqnum; /* Cryptographic Sequence Number. */
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/* Timer values. */
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u_int32_t v_inactivity;
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u_int32_t v_db_desc;
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u_int32_t v_ls_req;
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u_int32_t v_ls_upd;
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/* Threads. */
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struct thread *t_inactivity;
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struct thread *t_db_desc;
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struct thread *t_ls_req;
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struct thread *t_ls_upd;
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struct thread *t_hello_reply;
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/* Statistics Field */
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u_int32_t state_change;
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struct ospf_nbr_nbma *nbr_nbma;
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};
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/* Macros. */
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#define NBR_IS_DR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->d_router)
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#define NBR_IS_BDR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->bd_router)
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/* Prototypes. */
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struct ospf_neighbor *ospf_nbr_new (struct ospf_interface *);
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void ospf_nbr_free (struct ospf_neighbor *);
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void ospf_nbr_delete (struct ospf_neighbor *);
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int ospf_nbr_bidirectional (struct in_addr *, struct in_addr *, int);
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void ospf_nbr_add_self (struct ospf_interface *);
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int ospf_nbr_count (struct ospf_interface *, int);
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#ifdef HAVE_OPAQUE_LSA
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int ospf_nbr_count_opaque_capable (struct ospf_interface *);
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#endif /* HAVE_OPAQUE_LSA */
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struct ospf_neighbor *ospf_nbr_get (struct ospf_interface *,
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struct ospf_header *,
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struct ip *,
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struct prefix *);
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struct ospf_neighbor *ospf_nbr_lookup (struct ospf_interface *, struct ip *,
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struct ospf_header *);
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struct ospf_neighbor *ospf_nbr_lookup_by_addr (struct route_table *,
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struct in_addr *);
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struct ospf_neighbor *ospf_nbr_lookup_by_routerid (struct route_table *,
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struct in_addr *);
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void ospf_renegotiate_optional_capabilities (struct ospf *top);
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#endif /* _ZEBRA_OSPF_NEIGHBOR_H */
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