Annotation of embedaddon/quagga/ospfd/ospf_spf.h, revision 1.1
1.1 ! misho 1: /*
! 2: * OSPF calculation.
! 3: * Copyright (C) 1999 Kunihiro Ishiguro
! 4: *
! 5: * This file is part of GNU Zebra.
! 6: *
! 7: * GNU Zebra is free software; you can redistribute it and/or modify it
! 8: * under the terms of the GNU General Public License as published by the
! 9: * Free Software Foundation; either version 2, or (at your option) any
! 10: * later version.
! 11: *
! 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.
! 16: *
! 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 Free
! 19: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
! 20: * 02111-1307, USA.
! 21: */
! 22:
! 23: #ifndef _QUAGGA_OSPF_SPF_H
! 24: #define _QUAGGA_OSPF_SPF_H
! 25:
! 26: /* values for vertex->type */
! 27: #define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */
! 28: #define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */
! 29:
! 30: /* values for vertex->flags */
! 31: #define OSPF_VERTEX_PROCESSED 0x01
! 32:
! 33: /* The "root" is the node running the SPF calculation */
! 34:
! 35: /* A router or network in an area */
! 36: struct vertex
! 37: {
! 38: u_char flags;
! 39: u_char type; /* copied from LSA header */
! 40: struct in_addr id; /* copied from LSA header */
! 41: struct lsa_header *lsa; /* Router or Network LSA */
! 42: int *stat; /* Link to LSA status. */
! 43: u_int32_t distance; /* from root to this vertex */
! 44: struct list *parents; /* list of parents in SPF tree */
! 45: struct list *children; /* list of children in SPF tree*/
! 46: };
! 47:
! 48: /* A nexthop taken on the root node to get to this (parent) vertex */
! 49: struct vertex_nexthop
! 50: {
! 51: struct ospf_interface *oi; /* output intf on root node */
! 52: struct in_addr router; /* router address to send to */
! 53: };
! 54:
! 55: struct vertex_parent
! 56: {
! 57: struct vertex_nexthop *nexthop; /* link to nexthop info for this parent */
! 58: struct vertex *parent; /* parent vertex */
! 59: int backlink; /* index back to parent for router-lsa's */
! 60: };
! 61:
! 62: extern void ospf_spf_calculate_schedule (struct ospf *);
! 63: extern void ospf_rtrs_free (struct route_table *);
! 64:
! 65: /* void ospf_spf_calculate_timer_add (); */
! 66:
! 67: #endif /* _QUAGGA_OSPF_SPF_H */
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