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