Return to ospf_ism.h CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / quagga / ospfd

Annotation of embedaddon/quagga/ospfd/ospf_ism.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * OSPF version 2  Interface 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_ISM_H
        !            25: #define _ZEBRA_OSPF_ISM_H
        !            26: 
        !            27: /* OSPF Interface State Machine Status. */
        !            28: #define ISM_DependUpon                    0
        !            29: #define ISM_Down                          1
        !            30: #define ISM_Loopback                      2
        !            31: #define ISM_Waiting                       3
        !            32: #define ISM_PointToPoint                  4
        !            33: #define ISM_DROther                       5
        !            34: #define ISM_Backup                        6
        !            35: #define ISM_DR                            7
        !            36: #define OSPF_ISM_STATE_MAX               8
        !            37: 
        !            38: /* Because DR/DROther values are exhanged wrt RFC */
        !            39: #define ISM_SNMP(x) (((x) == ISM_DROther) ? ISM_DR : \
        !            40:                      ((x) == ISM_DR) ? ISM_DROther : (x))
        !            41: 
        !            42: /* OSPF Interface State Machine Event. */
        !            43: #define ISM_NoEvent                       0
        !            44: #define ISM_InterfaceUp                   1
        !            45: #define ISM_WaitTimer                     2
        !            46: #define ISM_BackupSeen                    3
        !            47: #define ISM_NeighborChange                4
        !            48: #define ISM_LoopInd                       5
        !            49: #define ISM_UnloopInd                     6
        !            50: #define ISM_InterfaceDown                 7
        !            51: #define OSPF_ISM_EVENT_MAX                8
        !            52: 
        !            53: #define OSPF_ISM_WRITE_ON(O)                                                  \
        !            54:       do                                                                      \
        !            55:         {                                                                     \
        !            56:           if (oi->on_write_q == 0)                                            \
        !            57:            {                                                                 \
        !            58:               listnode_add ((O)->oi_write_q, oi);                             \
        !            59:              oi->on_write_q = 1;                                             \
        !            60:            }                                                                 \
        !            61:          if ((O)->t_write == NULL)                                           \
        !            62:            (O)->t_write =                                                    \
        !            63:              thread_add_write (master, ospf_write, (O), (O)->fd);            \
        !            64:         } while (0)
        !            65:      
        !            66: /* Macro for OSPF ISM timer turn on. */
        !            67: #define OSPF_ISM_TIMER_ON(T,F,V) \
        !            68:   do { \
        !            69:     if (!(T)) \
        !            70:       (T) = thread_add_timer (master, (F), oi, (V)); \
        !            71:   } while (0)
        !            72: #define OSPF_ISM_TIMER_MSEC_ON(T,F,V) \
        !            73:   do { \
        !            74:     if (!(T)) \
        !            75:       (T) = thread_add_timer_msec (master, (F), oi, (V)); \
        !            76:   } while (0)
        !            77: 
        !            78: /* convenience macro to set hello timer correctly, according to
        !            79:  * whether fast-hello is set or not
        !            80:  */
        !            81: #define OSPF_HELLO_TIMER_ON(O) \
        !            82:   do { \
        !            83:     if (OSPF_IF_PARAM ((O), fast_hello)) \
        !            84:         OSPF_ISM_TIMER_MSEC_ON ((O)->t_hello, ospf_hello_timer, \
        !            85:                                 1000 / OSPF_IF_PARAM ((O), fast_hello)); \
        !            86:     else \
        !            87:         OSPF_ISM_TIMER_ON ((O)->t_hello, ospf_hello_timer, \
        !            88:                                 OSPF_IF_PARAM ((O), v_hello)); \
        !            89:   } while (0)
        !            90: 
        !            91: /* Macro for OSPF ISM timer turn off. */
        !            92: #define OSPF_ISM_TIMER_OFF(X) \
        !            93:   do { \
        !            94:     if (X) \
        !            95:       { \
        !            96:        thread_cancel (X); \
        !            97:        (X) = NULL; \
        !            98:       } \
        !            99:   } while (0)
        !           100: 
        !           101: /* Macro for OSPF schedule event. */
        !           102: #define OSPF_ISM_EVENT_SCHEDULE(I,E) \
        !           103:       thread_add_event (master, ospf_ism_event, (I), (E))
        !           104: 
        !           105: /* Macro for OSPF execute event. */
        !           106: #define OSPF_ISM_EVENT_EXECUTE(I,E) \
        !           107:       thread_execute (master, ospf_ism_event, (I), (E))
        !           108: 
        !           109: /* Prototypes. */
        !           110: extern int ospf_ism_event (struct thread *);
        !           111: extern void ism_change_status (struct ospf_interface *, int);
        !           112: extern int ospf_hello_timer (struct thread *thread);
        !           113: 
        !           114: #endif /* _ZEBRA_OSPF_ISM_H */