isisd/isis_circuit.h

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_circuit.h
   3  *
   4  * Copyright (C) 2001,2002   Sampo Saaristo
   5  *                           Tampere University of Technology
   6  *                           Institute of Communications Engineering
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public Licenseas published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22
  23 #ifndef ISIS_CIRCUIT_H
  24 #define ISIS_CIRCUIT_H
  25
  26 #define CIRCUIT_MAX 255
  27
  28 struct password
  29 {
  30   struct password *next;
  31   int len;
  32   u_char *pass;
  33 };
  34
  35 struct metric
  36 {
  37   u_char metric_default;
  38   u_char metric_error;
  39   u_char metric_expense;
  40   u_char metric_delay;
  41 };
  42
  43 struct isis_bcast_info
  44 {
  45   u_char snpa[ETH_ALEN];        /* SNPA of this circuit */
  46   char run_dr_elect[2];         /* Should we run dr election ? */
  47   struct thread *t_run_dr[2];   /* DR election thread */
  48   struct thread *t_send_lan_hello[2];   /* send LAN IIHs in this thread */
  49   struct list *adjdb[2];        /* adjacency dbs */
  50   struct list *lan_neighs[2];   /* list of lx neigh snpa */
  51   char is_dr[2];                /* Are we level x DR ? */
  52   u_char l1_desig_is[ISIS_SYS_ID_LEN + 1];      /* level-1 DR */
  53   u_char l2_desig_is[ISIS_SYS_ID_LEN + 1];      /* level-2 DR */
  54   struct thread *t_refresh_pseudo_lsp[2];       /* refresh pseudo-node LSPs */
  55   int pad_hellos;               /* add padding to Hello PDUs ? */
  56   u_char priority[2];           /* l1/2 IS Priority */
  57 };
  58
  59 struct isis_p2p_info
  60 {
  61   struct isis_adjacency *neighbor;
  62   struct thread *t_send_p2p_hello;      /* send P2P IIHs in this thread  */
  63 };
  64
  65 struct isis_circuit
  66 {
  67   int state;
  68   u_char circuit_id;            /* l1/l2 p2p/bcast CircuitID */
  69   struct isis_area *area;       /* back pointer to the area */
  70   struct interface *interface;  /* interface info from z */
  71   int fd;                       /* IS-IS l1/2 socket */
  72   int sap_length;               /* SAP length for DLPI */
  73   struct nlpids nlpids;
  74   /*
  75    * Threads
  76    */
  77   struct thread *t_read;
  78   struct thread *t_send_csnp[2];
  79   struct thread *t_send_psnp[2];
  80   struct list *lsp_queue;       /* LSPs to be txed (both levels) */
  81   /* there is no real point in two streams, just for programming kicker */
  82   int (*rx) (struct isis_circuit * circuit, u_char * ssnpa);
  83   struct stream *rcv_stream;    /* Stream for receiving */
  84   int (*tx) (struct isis_circuit * circuit, int level);
  85   struct stream *snd_stream;    /* Stream for sending */
  86   int idx;                      /* idx in S[RM|SN] flags */
  87 #define CIRCUIT_T_BROADCAST  0
  88 #define CIRCUIT_T_P2P        1
  89 #define CIRCUIT_T_STATIC_IN  2
  90 #define CIRCUIT_T_STATIC_OUT 3
  91 #define CIRCUIT_T_DA         4
  92   int circ_type;                /* type of the physical interface */
  93   union
  94   {
  95     struct isis_bcast_info bc;
  96     struct isis_p2p_info p2p;
  97   } u;
  98   char ext_domain;              /* externalDomain   (boolean) */
  99   /*
 100    * Configurables
 101    */
 102   struct isis_passwd passwd;    /* Circuit rx/tx password */
 103   long lsp_interval;
 104   int manual_l2_only;           /* manualL2OnlyMode (boolean) */
 105   int circuit_is_type;          /* circuit is type == level of circuit
 106                                  * diffrenciated from circuit type (media) */
 107   u_int32_t hello_interval[2];  /* l1HelloInterval in msecs */
 108   u_int16_t hello_multiplier[2];        /* l1HelloMultiplier */
 109   u_int16_t csnp_interval[2];   /* level-1 csnp-interval in seconds */
 110   u_int16_t psnp_interval[2];   /* level-1 psnp-interval in seconds */
 111   struct metric metrics[2];     /* l1XxxMetric */
 112   u_int32_t te_metric[2];
 113   struct password *c_rx_passwds;        /* circuitReceivePasswords */
 114   struct password *c_tc_passwd; /* circuitTransmitPassword */
 115   int ip_router;                /* Route IP ? */
 116   struct list *ip_addrs;        /* our IP addresses */
 117 #ifdef HAVE_IPV6
 118   int ipv6_router;              /* Route IPv6 ? */
 119   struct list *ipv6_link;       /* our link local IPv6 addresses */
 120   struct list *ipv6_non_link;   /* our non-link local IPv6 addresses */
 121 #endif                          /* HAVE_IPV6 */
 122   /*
 123    * RFC 2973 IS-IS Mesh Groups
 124    */
 125 #define MESH_INACTIVE 0
 126 #define MESH_BLOCKED  1
 127 #define MESH_SET      2
 128   int mesh_enabled;             /* meshGroupEnabled */
 129   u_int16_t mesh_group;         /* meshGroup */
 130   u_int16_t upadjcount[2];
 131   /*
 132    * Counters as in 10589--11.2.5.9
 133    */
 134   u_int32_t adj_state_changes;  /* changesInAdjacencyState */
 135   u_int32_t init_failures;      /* intialisationFailures */
 136   u_int32_t ctrl_pdus_rxed;     /* controlPDUsReceived */
 137   u_int32_t ctrl_pdus_txed;     /* controlPDUsSent */
 138   u_int32_t desig_changes[2];   /* lanLxDesignatedIntermediateSystemChanges */
 139   u_int32_t rej_adjacencies;    /* rejectedAdjacencies */
 140 };
 141
 142 void isis_circuit_init (void);
 143 struct isis_circuit *isis_circuit_new (void);
 144 struct isis_circuit *circuit_lookup_by_ifp (struct interface *ifp,
 145                                             struct list *list);
 146 struct isis_circuit *circuit_scan_by_ifp (struct interface *ifp);
 147 void isis_circuit_del (struct isis_circuit *circuit);
 148 void isis_circuit_configure (struct isis_circuit *circuit,
 149                              struct isis_area *area);
 150 void isis_circuit_up (struct isis_circuit *circuit);
 151 void isis_circuit_deconfigure (struct isis_circuit *circuit,
 152                                struct isis_area *area);
 153
 154 int isis_circuit_destroy (struct isis_circuit *circuit);
 155 void isis_circuit_if_add (struct isis_circuit *circuit,
 156                           struct interface *ifp);
 157 void isis_circuit_if_del (struct isis_circuit *circuit);
 158 void circuit_update_nlpids (struct isis_circuit *circuit);
 159 void isis_circuit_update_params (struct isis_circuit *circuit,
 160                                  struct interface *ifp);
 161 void isis_circuit_add_addr (struct isis_circuit *circuit,
 162                             struct connected *conn);
 163 void isis_circuit_del_addr (struct isis_circuit *circuit,
 164                             struct connected *conn);
 165 #endif /* _ZEBRA_ISIS_CIRCUIT_H */