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 #include "vty.h"
  27 #include "if.h"
  28 #include "qobj.h"
  29
  30 #include "isis_constants.h"
  31 #include "isis_common.h"
  32
  33 #define CIRCUIT_MAX 255
  34
  35 struct password
  36 {
  37   struct password *next;
  38   int len;
  39   u_char *pass;
  40 };
  41
  42 struct metric
  43 {
  44   u_char metric_default;
  45   u_char metric_error;
  46   u_char metric_expense;
  47   u_char metric_delay;
  48 };
  49
  50 struct isis_bcast_info
  51 {
  52   u_char snpa[ETH_ALEN];        /* SNPA of this circuit */
  53   char run_dr_elect[2];         /* Should we run dr election ? */
  54   struct thread *t_run_dr[2];   /* DR election thread */
  55   struct thread *t_send_lan_hello[2];   /* send LAN IIHs in this thread */
  56   struct list *adjdb[2];        /* adjacency dbs */
  57   struct list *lan_neighs[2];   /* list of lx neigh snpa */
  58   char is_dr[2];                /* Are we level x DR ? */
  59   u_char l1_desig_is[ISIS_SYS_ID_LEN + 1];      /* level-1 DR */
  60   u_char l2_desig_is[ISIS_SYS_ID_LEN + 1];      /* level-2 DR */
  61   struct thread *t_refresh_pseudo_lsp[2];       /* refresh pseudo-node LSPs */
  62 };
  63
  64 struct isis_p2p_info
  65 {
  66   struct isis_adjacency *neighbor;
  67   struct thread *t_send_p2p_hello;      /* send P2P IIHs in this thread  */
  68 };
  69
  70 struct isis_circuit
  71 {
  72   int state;
  73   u_char circuit_id;            /* l1/l2 p2p/bcast CircuitID */
  74   struct isis_area *area;       /* back pointer to the area */
  75   struct interface *interface;  /* interface info from z */
  76   int fd;                       /* IS-IS l1/2 socket */
  77   int sap_length;               /* SAP length for DLPI */
  78   struct nlpids nlpids;
  79   /*
  80    * Threads
  81    */
  82   struct thread *t_read;
  83   struct thread *t_send_csnp[2];
  84   struct thread *t_send_psnp[2];
  85   struct list *lsp_queue;       /* LSPs to be txed (both levels) */
  86   time_t lsp_queue_last_cleared;/* timestamp used to enforce transmit interval;
  87                                  * for scalability, use one timestamp per
  88                                  * circuit, instead of one per lsp per circuit
  89                                  */
  90   /* there is no real point in two streams, just for programming kicker */
  91   int (*rx) (struct isis_circuit * circuit, u_char * ssnpa);
  92   struct stream *rcv_stream;    /* Stream for receiving */
  93   int (*tx) (struct isis_circuit * circuit, int level);
  94   struct stream *snd_stream;    /* Stream for sending */
  95   int idx;                      /* idx in S[RM|SN] flags */
  96 #define CIRCUIT_T_UNKNOWN    0
  97 #define CIRCUIT_T_BROADCAST  1
  98 #define CIRCUIT_T_P2P        2
  99 #define CIRCUIT_T_LOOPBACK   3
 100   int circ_type;                /* type of the physical interface */
 101   int circ_type_config;         /* config type of the physical interface */
 102   union
 103   {
 104     struct isis_bcast_info bc;
 105     struct isis_p2p_info p2p;
 106   } u;
 107   u_char priority[2];           /* l1/2 IS configured priority */
 108   int pad_hellos;               /* add padding to Hello PDUs ? */
 109   char ext_domain;              /* externalDomain   (boolean) */
 110   int lsp_regenerate_pending[ISIS_LEVELS];
 111   /*
 112    * Configurables
 113    */
 114   struct isis_passwd passwd;    /* Circuit rx/tx password */
 115   int is_type;                  /* circuit is type == level of circuit
 116                                  * differentiated from circuit type (media) */
 117   u_int32_t hello_interval[2];  /* l1HelloInterval in msecs */
 118   u_int16_t hello_multiplier[2];        /* l1HelloMultiplier */
 119   u_int16_t csnp_interval[2];   /* level-1 csnp-interval in seconds */
 120   u_int16_t psnp_interval[2];   /* level-1 psnp-interval in seconds */
 121   u_int8_t  metric[2];
 122   u_int32_t te_metric[2];
 123   struct mpls_te_circuit *mtc; /* Support for MPLS-TE parameters - see isis_te.[c,h] */
 124   int ip_router;                /* Route IP ? */
 125   int is_passive;               /* Is Passive ? */
 126   struct list *mt_settings;     /* IS-IS MT Settings */
 127   struct list *ip_addrs;        /* our IP addresses */
 128   int ipv6_router;              /* Route IPv6 ? */
 129   struct list *ipv6_link;       /* our link local IPv6 addresses */
 130   struct list *ipv6_non_link;   /* our non-link local IPv6 addresses */
 131   u_int16_t upadjcount[2];
 132 #define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
 133   u_char flags;
 134   /*
 135    * Counters as in 10589--11.2.5.9
 136    */
 137   u_int32_t adj_state_changes;  /* changesInAdjacencyState */
 138   u_int32_t init_failures;      /* intialisationFailures */
 139   u_int32_t ctrl_pdus_rxed;     /* controlPDUsReceived */
 140   u_int32_t ctrl_pdus_txed;     /* controlPDUsSent */
 141   u_int32_t desig_changes[2];   /* lanLxDesignatedIntermediateSystemChanges */
 142   u_int32_t rej_adjacencies;    /* rejectedAdjacencies */
 143
 144   QOBJ_FIELDS
 145 };
 146 DECLARE_QOBJ_TYPE(isis_circuit)
 147
 148 void isis_circuit_init (void);
 149 struct isis_circuit *isis_circuit_new (void);
 150 void isis_circuit_del (struct isis_circuit *circuit);
 151 struct isis_circuit *circuit_lookup_by_ifp (struct interface *ifp,
 152                                             struct list *list);
 153 struct isis_circuit *circuit_scan_by_ifp (struct interface *ifp);
 154 void isis_circuit_configure (struct isis_circuit *circuit,
 155                              struct isis_area *area);
 156 void isis_circuit_deconfigure (struct isis_circuit *circuit,
 157                                struct isis_area *area);
 158 void isis_circuit_if_add (struct isis_circuit *circuit,
 159                           struct interface *ifp);
 160 void isis_circuit_if_del (struct isis_circuit *circuit,
 161                           struct interface *ifp);
 162 void isis_circuit_if_bind (struct isis_circuit *circuit,
 163                            struct interface *ifp);
 164 void isis_circuit_if_unbind (struct isis_circuit *circuit,
 165                              struct interface *ifp);
 166 void isis_circuit_add_addr (struct isis_circuit *circuit,
 167                             struct connected *conn);
 168 void isis_circuit_del_addr (struct isis_circuit *circuit,
 169                             struct connected *conn);
 170 void isis_circuit_prepare (struct isis_circuit *circuit);
 171 int isis_circuit_up (struct isis_circuit *circuit);
 172 void isis_circuit_down (struct isis_circuit *);
 173 void circuit_update_nlpids (struct isis_circuit *circuit);
 174 void isis_circuit_print_vty (struct isis_circuit *circuit, struct vty *vty,
 175                              char detail);
 176 size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
 177 void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream);
 178
 179 struct isis_circuit *isis_circuit_create (struct isis_area *area, struct interface *ifp);
 180 void isis_circuit_af_set (struct isis_circuit *circuit, bool ip_router, bool ipv6_router);
 181 int  isis_circuit_passive_set (struct isis_circuit *circuit, bool passive);
 182 void isis_circuit_is_type_set (struct isis_circuit *circuit, int is_type);
 183 int  isis_circuit_circ_type_set (struct isis_circuit *circuit, int circ_type);
 184
 185 int  isis_circuit_metric_set (struct isis_circuit *circuit, int level, int metric);
 186
 187 int  isis_circuit_passwd_unset (struct isis_circuit *circuit);
 188 int  isis_circuit_passwd_cleartext_set (struct isis_circuit *circuit, const char *passwd);
 189 int  isis_circuit_passwd_hmac_md5_set (struct isis_circuit *circuit, const char *passwd);
 190
 191 int isis_circuit_mt_enabled_set (struct isis_circuit *circuit, uint16_t mtid, bool enabled);
 192
 193 #endif /* _ZEBRA_ISIS_CIRCUIT_H */