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; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "prefix.h"
  30 #include "ferr.h"
  31
  32 #include "isis_constants.h"
  33 #include "isis_common.h"
  34
  35 struct isis_lsp;
  36
  37 struct password {
  38         struct password *next;
  39         int len;
  40         uint8_t *pass;
  41 };
  42
  43 struct metric {
  44         uint8_t metric_default;
  45         uint8_t metric_error;
  46         uint8_t metric_expense;
  47         uint8_t metric_delay;
  48 };
  49
  50 struct isis_bcast_info {
  51         uint8_t snpa[ETH_ALEN];             /* SNPA of this circuit */
  52         char run_dr_elect[2];               /* Should we run dr election ? */
  53         struct thread *t_run_dr[2];      /* DR election thread */
  54         struct thread *t_send_lan_hello[2]; /* send LAN IIHs in this thread */
  55         struct list *adjdb[2];              /* adjacency dbs */
  56         struct list *lan_neighs[2];      /* list of lx neigh snpa */
  57         char is_dr[2];                      /* Are we level x DR ? */
  58         uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
  59         uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
  60         struct thread *t_refresh_pseudo_lsp[2];  /* refresh pseudo-node LSPs */
  61 };
  62
  63 struct isis_p2p_info {
  64         struct isis_adjacency *neighbor;
  65         struct thread *t_send_p2p_hello; /* send P2P IIHs in this thread  */
  66 };
  67
  68 struct isis_circuit {
  69         int state;
  70         uint8_t circuit_id;       /* l1/l2 bcast CircuitID */
  71         struct isis_area *area;      /* back pointer to the area */
  72         struct interface *interface; /* interface info from z */
  73         int fd;                      /* IS-IS l1/2 socket */
  74         int sap_length;              /* SAP length for DLPI */
  75         struct nlpids nlpids;
  76         /*
  77          * Threads
  78          */
  79         struct thread *t_read;
  80         struct thread *t_send_csnp[2];
  81         struct thread *t_send_psnp[2];
  82         struct thread *t_send_lsp;
  83         struct isis_tx_queue *tx_queue;
  84
  85         /* there is no real point in two streams, just for programming kicker */
  86         int (*rx)(struct isis_circuit *circuit, uint8_t *ssnpa);
  87         struct stream *rcv_stream; /* Stream for receiving */
  88         int (*tx)(struct isis_circuit *circuit, int level);
  89         struct stream *snd_stream; /* Stream for sending */
  90         int idx;                   /* idx in S[RM|SN] flags */
  91 #define CIRCUIT_T_UNKNOWN    0
  92 #define CIRCUIT_T_BROADCAST  1
  93 #define CIRCUIT_T_P2P        2
  94 #define CIRCUIT_T_LOOPBACK   3
  95         int circ_type;             /* type of the physical interface */
  96         int circ_type_config;      /* config type of the physical interface */
  97         union {
  98                 struct isis_bcast_info bc;
  99                 struct isis_p2p_info p2p;
 100         } u;
 101         uint8_t priority[2]; /* l1/2 IS configured priority */
 102         int pad_hellos;     /* add padding to Hello PDUs ? */
 103         char ext_domain;    /* externalDomain   (boolean) */
 104         int lsp_regenerate_pending[ISIS_LEVELS];
 105         /*
 106          * Configurables
 107          */
 108         struct isis_passwd passwd;     /* Circuit rx/tx password */
 109         int is_type;                   /* circuit is type == level of circuit
 110                                         * differentiated from circuit type (media) */
 111         uint32_t hello_interval[2];   /* hello-interval in seconds */
 112         uint16_t hello_multiplier[2]; /* hello-multiplier */
 113         uint16_t csnp_interval[2];    /* csnp-interval in seconds */
 114         uint16_t psnp_interval[2];    /* psnp-interval in seconds */
 115         uint8_t metric[2];
 116         uint32_t te_metric[2];
 117         struct mpls_te_circuit
 118                 *mtc;   /* Support for MPLS-TE parameters - see isis_te.[c,h] */
 119         int ip_router;  /* Route IP ? */
 120         int is_passive; /* Is Passive ? */
 121         struct list *mt_settings;   /* IS-IS MT Settings */
 122         struct list *ip_addrs;      /* our IP addresses */
 123         int ipv6_router;            /* Route IPv6 ? */
 124         struct list *ipv6_link;     /* our link local IPv6 addresses */
 125         struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
 126         uint16_t upadjcount[2];
 127 #define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
 128         uint8_t flags;
 129         bool disable_threeway_adj;
 130         /*
 131          * Counters as in 10589--11.2.5.9
 132          */
 133         uint32_t adj_state_changes; /* changesInAdjacencyState */
 134         uint32_t init_failures;     /* intialisationFailures */
 135         uint32_t ctrl_pdus_rxed;    /* controlPDUsReceived */
 136         uint32_t ctrl_pdus_txed;    /* controlPDUsSent */
 137         uint32_t
 138                 desig_changes[2]; /* lanLxDesignatedIntermediateSystemChanges */
 139         uint32_t rej_adjacencies; /* rejectedAdjacencies */
 140
 141         QOBJ_FIELDS
 142 };
 143 DECLARE_QOBJ_TYPE(isis_circuit)
 144
 145 void isis_circuit_init(void);
 146 struct isis_circuit *isis_circuit_new(void);
 147 void isis_circuit_del(struct isis_circuit *circuit);
 148 struct isis_circuit *circuit_lookup_by_ifp(struct interface *ifp,
 149                                            struct list *list);
 150 struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp);
 151 void isis_circuit_configure(struct isis_circuit *circuit,
 152                             struct isis_area *area);
 153 void isis_circuit_deconfigure(struct isis_circuit *circuit,
 154                               struct isis_area *area);
 155 void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp);
 156 void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp);
 157 void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp);
 158 void isis_circuit_if_unbind(struct isis_circuit *circuit,
 159                             struct interface *ifp);
 160 void isis_circuit_add_addr(struct isis_circuit *circuit,
 161                            struct connected *conn);
 162 void isis_circuit_del_addr(struct isis_circuit *circuit,
 163                            struct connected *conn);
 164 void isis_circuit_prepare(struct isis_circuit *circuit);
 165 int isis_circuit_up(struct isis_circuit *circuit);
 166 void isis_circuit_down(struct isis_circuit *);
 167 void circuit_update_nlpids(struct isis_circuit *circuit);
 168 void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty,
 169                             char detail);
 170 size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
 171 void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream);
 172
 173 struct isis_circuit *isis_circuit_create(struct isis_area *area,
 174                                          struct interface *ifp);
 175 void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router,
 176                          bool ipv6_router);
 177 ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive);
 178 void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type);
 179 ferr_r isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type);
 180
 181 ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level,
 182                                int metric);
 183
 184 ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit);
 185 ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit,
 186                                          const char *passwd);
 187 ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
 188                                         const char *passwd);
 189
 190 int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
 191                                 bool enabled);
 192
 193 #endif /* _ZEBRA_ISIS_CIRCUIT_H */