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