Return to config.Y CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / bird / proto / static

bird 1.6.3

    1: /*
    2:  *	BIRD -- Static Protocol Configuration
    3:  *
    4:  *	(c) 1998--1999 Martin Mares <mj@ucw.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/static/static.h"
   12: 
   13: CF_DEFINES
   14: 
   15: #define STATIC_CFG ((struct static_config *) this_proto)
   16: static struct static_route *this_srt, *this_srt_nh, *last_srt_nh;
   17: static struct f_inst **this_srt_last_cmd;
   18: 
   19: static void
   20: static_route_finish(void)
   21: {
   22:   struct static_route *r;
   23: 
   24:   /* Update undefined use_bfd entries in multipath nexthops */
   25:   if (this_srt->dest == RTD_MULTIPATH)
   26:     for (r = this_srt->mp_next; r; r = r->mp_next)
   27:       if (r->use_bfd < 0)
   28:         r->use_bfd = this_srt->use_bfd;
   29: }
   30: 
   31: CF_DECLS
   32: 
   33: CF_KEYWORDS(STATIC, ROUTE, VIA, DROP, REJECT, PROHIBIT, PREFERENCE, CHECK, LINK)
   34: CF_KEYWORDS(MULTIPATH, WEIGHT, RECURSIVE, IGP, TABLE, BLACKHOLE, UNREACHABLE, BFD)
   35: 
   36: 
   37: CF_GRAMMAR
   38: 
   39: CF_ADDTO(proto, static_proto '}')
   40: 
   41: static_proto_start: proto_start STATIC {
   42:      this_proto = proto_config_new(&proto_static, $1);
   43:      static_init_config((struct static_config *) this_proto);
   44:   }
   45:  ;
   46: 
   47: static_proto:
   48:    static_proto_start proto_name '{'
   49:  | static_proto proto_item ';'
   50:  | static_proto CHECK LINK bool ';' { STATIC_CFG->check_link = $4; }
   51:  | static_proto IGP TABLE rtable ';' { STATIC_CFG->igp_table = $4; }
   52:  | static_proto stat_route stat_route_opt_list ';' { static_route_finish(); }
   53:  ;
   54: 
   55: stat_route0: ROUTE prefix {
   56:      this_srt = cfg_allocz(sizeof(struct static_route));
   57:      add_tail(&STATIC_CFG->other_routes, &this_srt->n);
   58:      this_srt->net = $2.addr;
   59:      this_srt->masklen = $2.len;
   60:      this_srt_last_cmd = &(this_srt->cmds);
   61:   }
   62:  ;
   63: 
   64: stat_multipath1:
   65:    VIA ipa ipa_scope {
   66:      last_srt_nh = this_srt_nh;
   67:      this_srt_nh = cfg_allocz(sizeof(struct static_route));
   68:      this_srt_nh->dest = RTD_NONE;
   69:      this_srt_nh->via = $2;
   70:      this_srt_nh->via_if = $3;
   71:      this_srt_nh->if_name = (void *) this_srt; /* really */
   72:      this_srt_nh->use_bfd = -1; /* undefined */
   73:    }
   74:  | stat_multipath1 WEIGHT expr {
   75:      this_srt_nh->masklen = $3 - 1; /* really */
   76:      if (($3<1) || ($3>256)) cf_error("Weight must be in range 1-256"); 
   77:    }
   78:  | stat_multipath1 BFD bool {
   79:      this_srt_nh->use_bfd = $3; cf_check_bfd($3);
   80:    }
   81:  ;
   82: 
   83: stat_multipath:
   84:    stat_multipath1 { this_srt->mp_next = this_srt_nh; }
   85:  | stat_multipath stat_multipath1 { last_srt_nh->mp_next = this_srt_nh; }
   86:  ;
   87: 
   88: stat_route:
   89:    stat_route0 VIA ipa ipa_scope {
   90:       this_srt->dest = RTD_ROUTER;
   91:       this_srt->via = $3;
   92:       this_srt->via_if = $4;
   93:    }
   94:  | stat_route0 VIA TEXT {
   95:       this_srt->dest = RTD_DEVICE;
   96:       this_srt->if_name = $3;
   97:       rem_node(&this_srt->n);
   98:       add_tail(&STATIC_CFG->iface_routes, &this_srt->n);
   99:    }
  100:  | stat_route0 MULTIPATH stat_multipath {
  101:       this_srt->dest = RTD_MULTIPATH;
  102:    }
  103:  | stat_route0 RECURSIVE ipa {
  104:       this_srt->dest = RTDX_RECURSIVE;
  105:       this_srt->via = $3;
  106:    }
  107: 
  108:  | stat_route0 DROP		{ this_srt->dest = RTD_BLACKHOLE; }
  109:  | stat_route0 REJECT		{ this_srt->dest = RTD_UNREACHABLE; }
  110:  | stat_route0 BLACKHOLE	{ this_srt->dest = RTD_BLACKHOLE; }
  111:  | stat_route0 UNREACHABLE	{ this_srt->dest = RTD_UNREACHABLE; }
  112:  | stat_route0 PROHIBIT		{ this_srt->dest = RTD_PROHIBIT; }
  113:  ;
  114: 
  115: stat_route_item:
  116:    cmd { *this_srt_last_cmd = $1; this_srt_last_cmd = &($1->next); }
  117:  | BFD bool ';' { this_srt->use_bfd = $2; cf_check_bfd($2); }
  118:  ;
  119: 
  120: stat_route_opts:
  121:    /* empty */
  122:  | stat_route_opts stat_route_item
  123:  ;
  124: 
  125: stat_route_opt_list:
  126:    /* empty */
  127:  | '{' stat_route_opts '}'
  128:  ;
  129: 
  130: 
  131: CF_CLI(SHOW STATIC, optsym, [<name>], [[Show details of static protocol]])
  132: { static_show(proto_get_named($3, &proto_static)); } ;
  133: 
  134: CF_CODE
  135: 
  136: CF_END