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Annotation of embedaddon/quagga/isisd/isis_adjacency.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * IS-IS Rout(e)ing protocol - isis_adjacency.h   
        !             3:  *                             IS-IS adjacency handling
        !             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; if not, write to the Free Software Foundation, Inc., 
        !            22:  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
        !            23:  */
        !            24: 
        !            25: #ifndef _ZEBRA_ISIS_ADJACENCY_H
        !            26: #define _ZEBRA_ISIS_ADJACENCY_H
        !            27: 
        !            28: enum isis_adj_usage
        !            29: {
        !            30:   ISIS_ADJ_NONE,
        !            31:   ISIS_ADJ_LEVEL1,
        !            32:   ISIS_ADJ_LEVEL2,
        !            33:   ISIS_ADJ_LEVEL1AND2
        !            34: };
        !            35: 
        !            36: enum isis_system_type
        !            37: {
        !            38:   ISIS_SYSTYPE_UNKNOWN,
        !            39:   ISIS_SYSTYPE_ES,
        !            40:   ISIS_SYSTYPE_IS,
        !            41:   ISIS_SYSTYPE_L1_IS,
        !            42:   ISIS_SYSTYPE_L2_IS
        !            43: };
        !            44: 
        !            45: enum isis_adj_state
        !            46: {
        !            47:   ISIS_ADJ_INITIALIZING,
        !            48:   ISIS_ADJ_UP,
        !            49:   ISIS_ADJ_DOWN
        !            50: };
        !            51: 
        !            52: /*
        !            53:  * we use the following codes to give an indication _why_
        !            54:  * a specific adjacency is up or down
        !            55:  */
        !            56: enum isis_adj_updown_reason
        !            57: {
        !            58:   ISIS_ADJ_REASON_SEENSELF,
        !            59:   ISIS_ADJ_REASON_AREA_MISMATCH,
        !            60:   ISIS_ADJ_REASON_HOLDTIMER_EXPIRED,
        !            61:   ISIS_ADJ_REASON_AUTH_FAILED,
        !            62:   ISIS_ADJ_REASON_CHECKSUM_FAILED
        !            63: };
        !            64: 
        !            65: #define DIS_RECORDS 8  /* keep the last 8 DIS state changes on record */
        !            66: 
        !            67: struct isis_dis_record
        !            68: {
        !            69:   int dis;                     /* is our neighbor the DIS ? */
        !            70:   time_t last_dis_change;      /* timestamp for last dis change */
        !            71: };
        !            72: 
        !            73: struct isis_adjacency
        !            74: {
        !            75:   u_char snpa[ETH_ALEN];               /* NeighbourSNPAAddress */
        !            76:   u_char sysid[ISIS_SYS_ID_LEN];       /* neighbourSystemIdentifier */
        !            77:   u_char lanid[ISIS_SYS_ID_LEN + 1];   /* LAN id on bcast circuits */
        !            78:   int dischanges[ISIS_LEVELS];         /* how many DIS changes ? */
        !            79:   /* an array of N levels for M records */
        !            80:   struct isis_dis_record dis_record[DIS_RECORDS * ISIS_LEVELS];
        !            81:   enum isis_adj_state adj_state;       /* adjacencyState */
        !            82:   enum isis_adj_usage adj_usage;       /* adjacencyUsage */
        !            83:   struct list *area_addrs;             /* areaAdressesOfNeighbour */
        !            84:   struct nlpids nlpids;                        /* protocols spoken ... */
        !            85:   struct list *ipv4_addrs;
        !            86: #ifdef HAVE_IPV6
        !            87:   struct list *ipv6_addrs;
        !            88: #endif                         /* HAVE_IPV6 */
        !            89:   u_char prio[ISIS_LEVELS];    /* priorityOfNeighbour for DIS */
        !            90:   int circuit_t;               /* from hello PDU hdr */
        !            91:   int level;                   /* level (1 or 2) */
        !            92:   enum isis_system_type sys_type;      /* neighbourSystemType */
        !            93:   u_int16_t hold_time;         /* entryRemainingTime */
        !            94:   u_int32_t last_upd;
        !            95:   u_int32_t last_flap;         /* last time the adj flapped */
        !            96:   int flaps;                   /* number of adjacency flaps  */
        !            97:   struct thread *t_expire;     /* expire after hold_time  */
        !            98:   struct isis_circuit *circuit;        /* back pointer */
        !            99: };
        !           100: 
        !           101: struct isis_adjacency *isis_adj_lookup (u_char * sysid, struct list *adjdb);
        !           102: struct isis_adjacency *isis_adj_lookup_snpa (u_char * ssnpa,
        !           103:                                             struct list *adjdb);
        !           104: struct isis_adjacency *isis_new_adj (u_char * id, u_char * snpa, int level,
        !           105:                                     struct isis_circuit *circuit);
        !           106: void isis_delete_adj (struct isis_adjacency *adj, struct list *adjdb);
        !           107: void isis_adj_state_change (struct isis_adjacency *adj,
        !           108:                            enum isis_adj_state state, const char *reason);
        !           109: void isis_adj_print (struct isis_adjacency *adj);
        !           110: int isis_adj_expire (struct thread *thread);
        !           111: void isis_adj_print_vty (struct isis_adjacency *adj, struct vty *vty);
        !           112: void isis_adj_print_vty_detail (struct isis_adjacency *adj, struct vty *vty);
        !           113: void isis_adj_print_vty_extensive (struct isis_adjacency *adj,
        !           114:                                   struct vty *vty);
        !           115: void isis_adj_p2p_print_vty (struct isis_adjacency *adj, struct vty *vty);
        !           116: void isis_adj_p2p_print_vty_detail (struct isis_adjacency *adj,
        !           117:                                    struct vty *vty);
        !           118: void isis_adj_p2p_print_vty_extensive (struct isis_adjacency *adj,
        !           119:                                       struct vty *vty);
        !           120: 
        !           121: void isis_adj_build_neigh_list (struct list *adjdb, struct list *list);
        !           122: void isis_adj_build_up_list (struct list *adjdb, struct list *list);
        !           123: void isis_adjdb_iterate (struct list *adjdb,
        !           124:                         void (*func) (struct isis_adjacency *,
        !           125:                                       void *), void *arg);
        !           126: 
        !           127: #endif /* ISIS_ADJACENCY_H */