proto/ospf/config.Y

   1 /*
   2  *      BIRD -- OSPF Configuration
   3  *
   4  *      (c) 1999--2004 Ondrej Filip <feela@network.cz>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 CF_HDR
  10
  11 #include "proto/ospf/ospf.h"
  12
  13 CF_DEFINES
  14
  15 #define OSPF_CFG ((struct ospf_config *) this_proto)
  16 #define OSPF_PATT ((struct ospf_iface_patt *) this_ipatt)
  17
  18 static struct ospf_area_config *this_area;
  19 static struct nbma_node *this_nbma;
  20 static list *this_nets;
  21 static struct area_net_config *this_pref;
  22 static struct ospf_stubnet_config *this_stubnet;
  23
  24 #ifdef OSPFv2
  25 static void
  26 ospf_iface_finish(void)
  27 {
  28   struct ospf_iface_patt *ip = OSPF_PATT;
  29
  30   if (ip->deadint == 0)
  31     ip->deadint = ip->deadc * ip->helloint;
  32
  33   ip->passwords = get_passwords();
  34
  35   if ((ip->autype == OSPF_AUTH_CRYPT) && (ip->helloint < 5))
  36     log(L_WARN "Hello or poll interval less that 5 makes cryptographic authenication prone to replay attacks");
  37
  38   if ((ip->autype == OSPF_AUTH_NONE) && (ip->passwords != NULL))
  39     log(L_WARN "Password option without authentication option does not make sense");
  40 }
  41 #endif
  42
  43 #ifdef OSPFv3
  44 static void
  45 ospf_iface_finish(void)
  46 {
  47   struct ospf_iface_patt *ip = OSPF_PATT;
  48
  49   if (ip->deadint == 0)
  50     ip->deadint = ip->deadc * ip->helloint;
  51
  52   if ((ip->autype != OSPF_AUTH_NONE) || (get_passwords() != NULL))
  53     cf_error("Authentication not supported in OSPFv3");
  54 }
  55 #endif
  56
  57 static void
  58 ospf_area_finish(void)
  59 {
  60   if ((this_area->areaid == 0) && (this_area->type != OPT_E))
  61     cf_error( "Backbone area cannot be stub/NSSA");
  62 }
  63
  64 static void
  65 ospf_proto_finish(void)
  66 {
  67   struct ospf_config *cf = OSPF_CFG;
  68
  69   if (EMPTY_LIST(cf->area_list))
  70     cf_error( "No configured areas in OSPF");
  71
  72   int areano = 0;
  73   int backbone = 0;
  74   struct ospf_area_config *ac;
  75   WALK_LIST(ac, cf->area_list)
  76   {
  77     areano++;
  78     if (ac->areaid == 0)
  79      backbone = 1;
  80   }
  81   cf->abr = areano > 1;
  82
  83   if (cf->abr && !backbone)
  84   {
  85     struct ospf_area_config *ac = cfg_allocz(sizeof(struct ospf_area_config));
  86     add_head(&cf->area_list, NODE ac);
  87     init_list(&ac->patt_list);
  88     init_list(&ac->net_list);
  89     init_list(&ac->enet_list);
  90     init_list(&ac->stubnet_list);
  91   }
  92
  93   if (!cf->abr && !EMPTY_LIST(cf->vlink_list))
  94     cf_error( "Vlinks cannot be used on single area router");
  95 }
  96
  97 CF_DECLS
  98
  99 CF_KEYWORDS(OSPF, AREA, OSPF_METRIC1, OSPF_METRIC2, OSPF_TAG, OSPF_ROUTER_ID)
 100 CF_KEYWORDS(NEIGHBORS, RFC1583COMPAT, STUB, TICK, COST, RETRANSMIT)
 101 CF_KEYWORDS(HELLO, TRANSMIT, PRIORITY, DEAD, TYPE, BROADCAST, BCAST)
 102 CF_KEYWORDS(NONBROADCAST, NBMA, POINTOPOINT, PTP, POINTOMULTIPOINT, PTMP)
 103 CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC)
 104 CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK)
 105 CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL)
 106 CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY)
 107
 108 %type <t> opttext
 109
 110 CF_GRAMMAR
 111
 112 CF_ADDTO(proto, ospf_proto '}' { ospf_proto_finish(); } )
 113
 114 ospf_proto_start: proto_start OSPF {
 115      this_proto = proto_config_new(&proto_ospf, sizeof(struct ospf_config));
 116      this_proto->preference = DEF_PREF_OSPF;
 117      init_list(&OSPF_CFG->area_list);
 118      init_list(&OSPF_CFG->vlink_list);
 119      OSPF_CFG->rfc1583 = DEFAULT_RFC1583;
 120      OSPF_CFG->tick = DEFAULT_OSPFTICK;
 121   }
 122  ;
 123
 124 ospf_proto:
 125    ospf_proto_start proto_name '{'
 126  | ospf_proto ospf_proto_item ';'
 127  ;
 128
 129 ospf_proto_item:
 130    proto_item
 131  | RFC1583COMPAT bool { OSPF_CFG->rfc1583 = $2; }
 132  | ECMP bool { OSPF_CFG->ecmp = $2 ? DEFAULT_ECMP_LIMIT : 0; }
 133  | ECMP bool LIMIT expr { OSPF_CFG->ecmp = $2 ? $4 : 0; if ($4 < 0) cf_error("ECMP limit cannot be negative"); }
 134  | TICK expr { OSPF_CFG->tick = $2; if($2<=0) cf_error("Tick must be greater than zero"); }
 135  | ospf_area
 136  ;
 137
 138 ospf_area_start: AREA idval {
 139   this_area = cfg_allocz(sizeof(struct ospf_area_config));
 140   add_tail(&OSPF_CFG->area_list, NODE this_area);
 141   this_area->areaid = $2;
 142   this_area->stub_cost = DEFAULT_STUB_COST;
 143   this_area->type = OPT_E;
 144   this_area->transint = DEFAULT_TRANSINT;
 145
 146   init_list(&this_area->patt_list);
 147   init_list(&this_area->net_list);
 148   init_list(&this_area->enet_list);
 149   init_list(&this_area->stubnet_list);
 150  }
 151  ;
 152
 153 ospf_area: ospf_area_start '{' ospf_area_opts '}' { ospf_area_finish(); }
 154  ;
 155
 156 ospf_area_opts:
 157    /* empty */
 158  | ospf_area_opts ospf_area_item ';'
 159  ;
 160
 161 ospf_area_item:
 162    STUB COST expr { this_area->stub_cost = $3 ; if($3<=0) cf_error("Stub cost must be greater than zero"); }
 163  | STUB bool { this_area->type = $2 ? 0 : OPT_E; /* We should remove the option */ }
 164  | NSSA { this_area->type = OPT_N; }
 165  | SUMMARY bool { this_area->summary = $2; }
 166  | TRANSLATOR bool { this_area->translator = $2; }
 167  | TRANSLATOR STABILITY expr { this_area->transint = $3; }
 168  | NETWORKS { this_nets = &this_area->net_list; } '{' pref_list '}'
 169  | EXTERNAL { this_nets = &this_area->enet_list; } '{' pref_list '}'
 170  | STUBNET ospf_stubnet
 171  | INTERFACE ospf_iface
 172  | ospf_vlink
 173  ;
 174
 175 ospf_stubnet:
 176    ospf_stubnet_start '{' ospf_stubnet_opts '}'
 177  | ospf_stubnet_start
 178  ;
 179
 180 ospf_stubnet_start:
 181    prefix {
 182      this_stubnet = cfg_allocz(sizeof(struct ospf_stubnet_config));
 183      add_tail(&this_area->stubnet_list, NODE this_stubnet);
 184      this_stubnet->px = $1;
 185      this_stubnet->cost = COST_D;
 186    }
 187  ;
 188
 189 ospf_stubnet_opts:
 190    /* empty */
 191  | ospf_stubnet_opts ospf_stubnet_item ';'
 192  ;
 193
 194 ospf_stubnet_item:
 195    HIDDEN bool { this_stubnet->hidden = $2; }
 196  | SUMMARY bool { this_stubnet->summary = $2; }
 197  | COST expr { this_stubnet->cost = $2; }
 198  ;
 199
 200 ospf_vlink:
 201    ospf_vlink_start '{' ospf_vlink_opts '}' { ospf_iface_finish(); }
 202  | ospf_vlink_start
 203  ;
 204
 205 ospf_vlink_opts:
 206    /* empty */
 207  | ospf_vlink_opts ospf_vlink_item ';'
 208  ;
 209
 210 ospf_vlink_item:
 211  | HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
 212  | RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=0) cf_error("Retransmit int must be greater than zero"); }
 213  | TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
 214  | WAIT expr { OSPF_PATT->waitint = $2 ; }
 215  | DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
 216  | DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
 217  | AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
 218  | AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
 219  | AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
 220  | password_list
 221  ;
 222
 223 ospf_vlink_start: VIRTUAL LINK idval
 224  {
 225   if (this_area->areaid == 0) cf_error("Virtual link cannot be in backbone");
 226   this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
 227   add_tail(&OSPF_CFG->vlink_list, NODE this_ipatt);
 228   init_list(&this_ipatt->ipn_list);
 229   OSPF_PATT->voa = this_area->areaid;
 230   OSPF_PATT->vid = $3;
 231   OSPF_PATT->helloint = HELLOINT_D;
 232   OSPF_PATT->rxmtint = RXMTINT_D;
 233   OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
 234   OSPF_PATT->waitint = WAIT_DMH*HELLOINT_D;
 235   OSPF_PATT->deadc = DEADC_D;
 236   OSPF_PATT->deadint = 0;
 237   OSPF_PATT->type = OSPF_IT_VLINK;
 238   init_list(&OSPF_PATT->nbma_list);
 239   OSPF_PATT->autype = OSPF_AUTH_NONE;
 240   reset_passwords();
 241  }
 242 ;
 243
 244 ospf_iface_item:
 245    COST expr { OSPF_PATT->cost = $2 ; if (($2<=0) || ($2>65535)) cf_error("Cost must be in range 1-65535"); }
 246  | HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
 247  | POLL expr { OSPF_PATT->pollint = $2 ; if ($2<=0) cf_error("Poll int must be greater than zero"); }
 248  | RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=0) cf_error("Retransmit int must be greater than zero"); }
 249  | WAIT expr { OSPF_PATT->waitint = $2 ; }
 250  | DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
 251  | DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
 252  | TYPE BROADCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
 253  | TYPE BCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
 254  | TYPE NONBROADCAST { OSPF_PATT->type = OSPF_IT_NBMA ; }
 255  | TYPE NBMA { OSPF_PATT->type = OSPF_IT_NBMA ; }
 256  | TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
 257  | TYPE PTP { OSPF_PATT->type = OSPF_IT_PTP ; }
 258  | TYPE POINTOMULTIPOINT { OSPF_PATT->type = OSPF_IT_PTMP ; }
 259  | TYPE PTMP { OSPF_PATT->type = OSPF_IT_PTMP ; }
 260  | TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
 261  | PRIORITY expr { OSPF_PATT->priority = $2 ; if (($2<0) || ($2>255)) cf_error("Priority must be in range 0-255"); }
 262  | STRICT NONBROADCAST bool { OSPF_PATT->strictnbma = $3 ; }
 263  | STUB bool { OSPF_PATT->stub = $2 ; }
 264  | CHECK LINK bool { OSPF_PATT->check_link = $3; }
 265  | ECMP WEIGHT expr { OSPF_PATT->ecmp_weight = $3 - 1; if (($3<1) || ($3>256)) cf_error("ECMP weight must be in range 1-256"); }
 266  | NEIGHBORS '{' ipa_list '}'
 267  | AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
 268  | AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
 269  | AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
 270  | RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; }
 271  | RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; }
 272  | RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if (($3 < OSPF_RXBUF_MINSIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); }
 273  | password_list
 274  ;
 275
 276 pref_list:
 277  /* empty */
 278  | pref_list pref_item
 279  ;
 280
 281 pref_item: pref_base pref_opt ';' ;
 282
 283 pref_base: prefix
 284  {
 285    this_pref = cfg_allocz(sizeof(struct area_net_config));
 286    add_tail(this_nets, NODE this_pref);
 287    this_pref->px.addr = $1.addr;
 288    this_pref->px.len = $1.len;
 289  }
 290 ;
 291
 292 pref_opt:
 293  /* empty */
 294  | HIDDEN { this_pref->hidden = 1; }
 295  | TAG expr { this_pref->tag = $2; }
 296  ;
 297
 298 ipa_list:
 299  /* empty */
 300  | ipa_list ipa_item
 301  ;
 302
 303 ipa_item:
 304     ipa_el
 305   | ipa_ne;
 306
 307 ipa_el: IPA ';'
 308  {
 309    this_nbma = cfg_allocz(sizeof(struct nbma_node));
 310    add_tail(&OSPF_PATT->nbma_list, NODE this_nbma);
 311    this_nbma->ip=$1;
 312    this_nbma->eligible=0;
 313  }
 314 ;
 315
 316 ipa_ne: IPA ELIGIBLE ';'
 317  {
 318    this_nbma = cfg_allocz(sizeof(struct nbma_node));
 319    add_tail(&OSPF_PATT->nbma_list, NODE this_nbma);
 320    this_nbma->ip=$1;
 321    this_nbma->eligible=1;
 322  }
 323 ;
 324
 325
 326 ospf_iface_start:
 327  {
 328   this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
 329   add_tail(&this_area->patt_list, NODE this_ipatt);
 330   init_list(&this_ipatt->ipn_list);
 331   OSPF_PATT->cost = COST_D;
 332   OSPF_PATT->helloint = HELLOINT_D;
 333   OSPF_PATT->pollint = POLLINT_D;
 334   OSPF_PATT->rxmtint = RXMTINT_D;
 335   OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
 336   OSPF_PATT->priority = PRIORITY_D;
 337   OSPF_PATT->waitint = WAIT_DMH*HELLOINT_D;
 338   OSPF_PATT->deadc = DEADC_D;
 339   OSPF_PATT->deadint = 0;
 340   OSPF_PATT->type = OSPF_IT_UNDEF;
 341   init_list(&OSPF_PATT->nbma_list);
 342   OSPF_PATT->autype = OSPF_AUTH_NONE;
 343   reset_passwords();
 344  }
 345 ;
 346
 347 ospf_iface_opts:
 348    /* empty */
 349  | ospf_iface_opts ospf_iface_item ';'
 350  ;
 351
 352 ospf_iface_opt_list:
 353    /* empty */
 354  | '{' ospf_iface_opts '}'
 355  ;
 356
 357 ospf_iface:
 358   ospf_iface_start iface_patt_list ospf_iface_opt_list { ospf_iface_finish(); }
 359  ;
 360
 361 opttext:
 362     TEXT
 363  | /* empty */ { $$ = NULL; }
 364  ;
 365
 366 CF_ADDTO(dynamic_attr, OSPF_METRIC1 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC1); })
 367 CF_ADDTO(dynamic_attr, OSPF_METRIC2 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC2); })
 368 CF_ADDTO(dynamic_attr, OSPF_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_TAG); })
 369 CF_ADDTO(dynamic_attr, OSPF_ROUTER_ID { $$ = f_new_dynamic_attr(EAF_TYPE_ROUTER_ID | EAF_TEMP, T_QUAD, EA_OSPF_ROUTER_ID); })
 370
 371 CF_CLI(SHOW OSPF, optsym, [<name>], [[Show information about OSPF protocol]])
 372 { ospf_sh(proto_get_named($3, &proto_ospf)); };
 373
 374 CF_CLI(SHOW OSPF NEIGHBORS, optsym opttext, [<name>] [\"<interface>\"], [[Show information about OSPF neighbors]])
 375 { ospf_sh_neigh(proto_get_named($4, &proto_ospf), $5); };
 376
 377 CF_CLI(SHOW OSPF INTERFACE, optsym opttext, [<name>] [\"<interface>\"], [[Show information about interface]])
 378 { ospf_sh_iface(proto_get_named($4, &proto_ospf), $5); };
 379
 380 CF_CLI_HELP(SHOW OSPF TOPOLOGY, [all] [<name>], [[Show information about OSPF network topology]])
 381
 382 CF_CLI(SHOW OSPF TOPOLOGY, optsym opttext, [<name>], [[Show information about reachable OSPF network topology]])
 383 { ospf_sh_state(proto_get_named($4, &proto_ospf), 0, 1); };
 384
 385 CF_CLI(SHOW OSPF TOPOLOGY ALL, optsym opttext, [<name>], [[Show information about all OSPF network topology]])
 386 { ospf_sh_state(proto_get_named($5, &proto_ospf), 0, 0); };
 387
 388 CF_CLI_HELP(SHOW OSPF STATE, [all] [<name>], [[Show information about OSPF network state]])
 389
 390 CF_CLI(SHOW OSPF STATE, optsym opttext, [<name>], [[Show information about reachable OSPF network state]])
 391 { ospf_sh_state(proto_get_named($4, &proto_ospf), 1, 1); };
 392
 393 CF_CLI(SHOW OSPF STATE ALL, optsym opttext, [<name>], [[Show information about all OSPF network state]])
 394 { ospf_sh_state(proto_get_named($5, &proto_ospf), 1, 0); };
 395
 396 CF_CLI(SHOW OSPF LSADB, optsym opttext, [<name>], [[Show content of OSPF LSA database]])
 397 { ospf_sh_lsadb(proto_get_named($4, &proto_ospf)); };
 398
 399 CF_CODE
 400
 401 CF_END