1/* 2 * OSPF version 2 Neighbor State Machine 3 * From RFC2328 [OSPF Version 2] 4 * Copyright (C) 1999 Toshiaki Takada 5 * 6 * This file is part of GNU Zebra. 7 * 8 * GNU Zebra is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2, or (at your option) any 11 * later version. 12 * 13 * GNU Zebra is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with GNU Zebra; see the file COPYING. If not, write to the Free 20 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 21 * 02111-1307, USA. 22 */ 23 24#ifndef _ZEBRA_OSPF_NSM_H 25#define _ZEBRA_OSPF_NSM_H 26 27/* OSPF Neighbor State Machine State. */ 28#define NSM_DependUpon 0 29#define NSM_Deleted 1 30#define NSM_Down 2 31#define NSM_Attempt 3 32#define NSM_Init 4 33#define NSM_TwoWay 5 34#define NSM_ExStart 6 35#define NSM_Exchange 7 36#define NSM_Loading 8 37#define NSM_Full 9 38#define OSPF_NSM_STATE_MAX 10 39 40/* OSPF Neighbor State Machine Event. */ 41#define NSM_NoEvent 0 42#define NSM_PacketReceived 1 /* HelloReceived in the protocol */ 43#define NSM_Start 2 44#define NSM_TwoWayReceived 3 45#define NSM_NegotiationDone 4 46#define NSM_ExchangeDone 5 47#define NSM_BadLSReq 6 48#define NSM_LoadingDone 7 49#define NSM_AdjOK 8 50#define NSM_SeqNumberMismatch 9 51#define NSM_OneWayReceived 10 52#define NSM_KillNbr 11 53#define NSM_InactivityTimer 12 54#define NSM_LLDown 13 55#define OSPF_NSM_EVENT_MAX 14 56 57/* Macro for OSPF NSM timer turn on. */ 58#define OSPF_NSM_TIMER_ON(T,F,V) \ 59 do { \ 60 if (!(T)) \ 61 (T) = thread_add_timer (master, (F), nbr, (V)); \ 62 } while (0) 63 64/* Macro for OSPF NSM timer turn off. */ 65#define OSPF_NSM_TIMER_OFF(X) \ 66 do { \ 67 if (X) \ 68 { \ 69 thread_cancel (X); \ 70 (X) = NULL; \ 71 } \ 72 } while (0) 73 74/* Macro for OSPF NSM schedule event. */ 75#define OSPF_NSM_EVENT_SCHEDULE(N,E) \ 76 thread_add_event (master, ospf_nsm_event, (N), (E)) 77 78/* Macro for OSPF NSM execute event. */ 79#define OSPF_NSM_EVENT_EXECUTE(N,E) \ 80 thread_execute (master, ospf_nsm_event, (N), (E)) 81 82/* Prototypes. */ 83extern int ospf_nsm_event (struct thread *); 84extern void ospf_check_nbr_loading (struct ospf_neighbor *); 85extern int ospf_db_summary_isempty (struct ospf_neighbor *); 86extern int ospf_db_summary_count (struct ospf_neighbor *); 87extern void ospf_db_summary_clear (struct ospf_neighbor *); 88 89#endif /* _ZEBRA_OSPF_NSM_H */ 90 91