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 DECLARE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp));
  36
  37 struct isis_lsp;
  38
  39 struct password {
  40         struct password *next;
  41         int len;
  42         uint8_t *pass;
  43 };
  44
  45 struct metric {
  46         uint8_t metric_default;
  47         uint8_t metric_error;
  48         uint8_t metric_expense;
  49         uint8_t metric_delay;
  50 };
  51
  52 struct isis_bcast_info {
  53         uint8_t snpa[ETH_ALEN];               /* SNPA of this circuit */
  54         char run_dr_elect[ISIS_LEVELS];       /* Should we run dr election ? */
  55         struct thread *t_run_dr[ISIS_LEVELS]; /* DR election thread */
  56         struct thread *t_send_lan_hello[ISIS_LEVELS]; /* send LAN IIHs in this
  57                                                          thread */
  58         struct list *adjdb[ISIS_LEVELS];              /* adjacency dbs */
  59         struct list *lan_neighs[ISIS_LEVELS];     /* list of lx neigh snpa */
  60         char is_dr[ISIS_LEVELS];                  /* Are we level x DR ? */
  61         uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
  62         uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
  63         struct thread *t_refresh_pseudo_lsp[ISIS_LEVELS]; /* refresh pseudo-node
  64                                                              LSPs */
  65 };
  66
  67 struct isis_p2p_info {
  68         struct isis_adjacency *neighbor;
  69         struct thread *t_send_p2p_hello; /* send P2P IIHs in this thread  */
  70 };
  71
  72 struct bfd_info;
  73
  74 struct isis_circuit_arg {
  75         int level;
  76         struct isis_circuit *circuit;
  77 };
  78
  79 struct isis_circuit {
  80         int state;
  81         uint8_t circuit_id;       /* l1/l2 bcast CircuitID */
  82         struct isis *isis;
  83         struct isis_area *area;      /* back pointer to the area */
  84         struct interface *interface; /* interface info from z */
  85         int fd;                      /* IS-IS l1/2 socket */
  86         int sap_length;              /* SAP length for DLPI */
  87         struct nlpids nlpids;
  88         /*
  89          * Threads
  90          */
  91         struct thread *t_read;
  92         struct thread *t_send_csnp[ISIS_LEVELS];
  93         struct thread *t_send_psnp[ISIS_LEVELS];
  94         struct isis_tx_queue *tx_queue;
  95         struct isis_circuit_arg
  96                 level_arg[ISIS_LEVELS]; /* used as argument for threads */
  97
  98         /* there is no real point in two streams, just for programming kicker */
  99         int (*rx)(struct isis_circuit *circuit, uint8_t *ssnpa);
 100         struct stream *rcv_stream; /* Stream for receiving */
 101         int (*tx)(struct isis_circuit *circuit, int level);
 102         struct stream *snd_stream; /* Stream for sending */
 103         int idx;                   /* idx in S[RM|SN] flags */
 104 #define CIRCUIT_T_UNKNOWN    0
 105 #define CIRCUIT_T_BROADCAST  1
 106 #define CIRCUIT_T_P2P        2
 107 #define CIRCUIT_T_LOOPBACK   3
 108         int circ_type;             /* type of the physical interface */
 109         int circ_type_config;      /* config type of the physical interface */
 110         union {
 111                 struct isis_bcast_info bc;
 112                 struct isis_p2p_info p2p;
 113         } u;
 114         uint8_t priority[ISIS_LEVELS]; /* l1/2 IS configured priority */
 115         int pad_hellos;     /* add padding to Hello PDUs ? */
 116         char ext_domain;    /* externalDomain   (boolean) */
 117         int lsp_regenerate_pending[ISIS_LEVELS];
 118         /*
 119          * Configurables
 120          */
 121         struct isis_passwd passwd;     /* Circuit rx/tx password */
 122         int is_type;                   /* circuit is type == level of circuit
 123                                         * differentiated from circuit type (media) */
 124         uint32_t hello_interval[ISIS_LEVELS];   /* hello-interval in seconds */
 125         uint16_t hello_multiplier[ISIS_LEVELS]; /* hello-multiplier */
 126         uint16_t csnp_interval[ISIS_LEVELS];    /* csnp-interval in seconds */
 127         uint16_t psnp_interval[ISIS_LEVELS];    /* psnp-interval in seconds */
 128         uint8_t metric[ISIS_LEVELS];
 129         uint32_t te_metric[ISIS_LEVELS];
 130         struct isis_ext_subtlvs *ext; /* Extended parameters (TE + Adj SID */
 131         int ip_router;  /* Route IP ? */
 132         int is_passive; /* Is Passive ? */
 133         struct list *mt_settings;   /* IS-IS MT Settings */
 134         struct list *ip_addrs;      /* our IP addresses */
 135         int ipv6_router;            /* Route IPv6 ? */
 136         struct list *ipv6_link;     /* our link local IPv6 addresses */
 137         struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
 138         uint16_t upadjcount[ISIS_LEVELS];
 139 #define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
 140         uint8_t flags;
 141         bool disable_threeway_adj;
 142         struct bfd_info *bfd_info;
 143         struct ldp_sync_info *ldp_sync_info;
 144         bool lfa_protection[ISIS_LEVELS];
 145         bool rlfa_protection[ISIS_LEVELS];
 146         uint32_t rlfa_max_metric[ISIS_LEVELS];
 147         struct hash *lfa_excluded_ifaces[ISIS_LEVELS];
 148         bool tilfa_protection[ISIS_LEVELS];
 149         bool tilfa_node_protection[ISIS_LEVELS];
 150         /*
 151          * Counters as in 10589--11.2.5.9
 152          */
 153         uint32_t adj_state_changes; /* changesInAdjacencyState */
 154         uint32_t init_failures;     /* intialisationFailures */
 155         uint32_t ctrl_pdus_rxed;    /* controlPDUsReceived */
 156         uint32_t ctrl_pdus_txed;    /* controlPDUsSent */
 157         uint32_t desig_changes[ISIS_LEVELS]; /* lanLxDesignatedIntermediateSystemChanges
 158                                               */
 159         uint32_t rej_adjacencies; /* rejectedAdjacencies */
 160         /*
 161          * Counters as in ietf-isis@2019-09-09.yang
 162          */
 163         uint32_t id_len_mismatches; /* id-len-mismatch */
 164         uint32_t max_area_addr_mismatches; /* max-area-addresses-mismatch */
 165         uint32_t auth_type_failures; /*authentication-type-fails */
 166         uint32_t auth_failures; /* authentication-fails */
 167
 168         QOBJ_FIELDS
 169 };
 170 DECLARE_QOBJ_TYPE(isis_circuit)
 171
 172 void isis_circuit_init(void);
 173 struct isis_circuit *isis_circuit_new(struct isis *isis);
 174 void isis_circuit_del(struct isis_circuit *circuit);
 175 struct isis_circuit *circuit_lookup_by_ifp(struct interface *ifp,
 176                                            struct list *list);
 177 struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp);
 178 void isis_circuit_configure(struct isis_circuit *circuit,
 179                             struct isis_area *area);
 180 void isis_circuit_deconfigure(struct isis_circuit *circuit,
 181                               struct isis_area *area);
 182 void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp);
 183 void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp);
 184 void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp);
 185 void isis_circuit_if_unbind(struct isis_circuit *circuit,
 186                             struct interface *ifp);
 187 void isis_circuit_add_addr(struct isis_circuit *circuit,
 188                            struct connected *conn);
 189 void isis_circuit_del_addr(struct isis_circuit *circuit,
 190                            struct connected *conn);
 191 void isis_circuit_prepare(struct isis_circuit *circuit);
 192 int isis_circuit_up(struct isis_circuit *circuit);
 193 void isis_circuit_down(struct isis_circuit *);
 194 void circuit_update_nlpids(struct isis_circuit *circuit);
 195 void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty,
 196                             char detail);
 197 size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
 198 void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream);
 199
 200 struct isis_circuit *isis_circuit_create(struct isis_area *area,
 201                                          struct interface *ifp);
 202 void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router,
 203                          bool ipv6_router);
 204 ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive);
 205 void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type);
 206 void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type);
 207
 208 ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level,
 209                                int metric);
 210
 211 ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit);
 212 ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit,
 213                                uint8_t passwd_type, const char *passwd);
 214 ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit,
 215                                          const char *passwd);
 216 ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
 217                                         const char *passwd);
 218
 219 int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
 220                                 bool enabled);
 221
 222 #ifdef FABRICD
 223 DECLARE_HOOK(isis_circuit_config_write,
 224             (struct isis_circuit *circuit, struct vty *vty),
 225             (circuit, vty))
 226 #endif
 227
 228 DECLARE_HOOK(isis_circuit_add_addr_hook, (struct isis_circuit *circuit),
 229              (circuit))
 230
 231 #endif /* _ZEBRA_ISIS_CIRCUIT_H */