isisd/isis_csm.h

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_csm.h
   3  *                             IS-IS circuit state machine
   4  *
   5  * Copyright (C) 2001,2002   Sampo Saaristo
   6  *                           Tampere University of Technology
   7  *                           Institute of Communications Engineering
   8  *
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public Licenseas published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; see the file COPYING; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24 #ifndef _ZEBRA_ISIS_CSM_H
  25 #define _ZEBRA_ISIS_CSM_H
  26
  27 /*
  28  * Circuit states
  29  */
  30 enum isis_circuit_state {
  31         C_STATE_NA,
  32         C_STATE_INIT, /* Connected to interface */
  33         C_STATE_CONF, /* Configured for ISIS    */
  34         C_STATE_UP,   /* CONN | CONF            */
  35 };
  36
  37 /*
  38  * Circuit events
  39  */
  40 #define ISIS_ENABLE    1
  41 #define IF_UP_FROM_Z   2
  42 #define ISIS_DISABLE   3
  43 #define IF_DOWN_FROM_Z 4
  44
  45 struct isis_circuit *
  46 isis_csm_state_change(int event, struct isis_circuit *circuit, void *arg);
  47
  48 #endif /* _ZEBRA_ISIS_CSM_H */