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quagga 1.0.20160315

    1: /*
    2:  * Common protocol data and data structures.
    3:  * Copyright (C) 2003 Yasuhiro Ohara
    4:  *
    5:  * This file is part of GNU Zebra.
    6:  *
    7:  * GNU Zebra is free software; you can redistribute it and/or modify it
    8:  * under the terms of the GNU General Public License as published by the
    9:  * Free Software Foundation; either version 2, or (at your option) any
   10:  * later version.
   11:  *
   12:  * GNU Zebra is distributed in the hope that it will be useful, but
   13:  * WITHOUT ANY WARRANTY; without even the implied warranty of
   14:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   15:  * General Public License for more details.
   16:  *
   17:  * You should have received a copy of the GNU General Public License
   18:  * along with GNU Zebra; see the file COPYING.  If not, write to the 
   19:  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
   20:  * Boston, MA 02111-1307, USA.  
   21:  */
   22: 
   23: #ifndef OSPF6_PROTO_H
   24: #define OSPF6_PROTO_H
   25: 
   26: /* OSPF protocol version */
   27: #define OSPFV3_VERSION           3
   28: 
   29: /* TOS field normaly null */
   30: #define DEFAULT_TOS_VALUE      0x0
   31: 
   32: #define ALLSPFROUTERS6 "ff02::5"
   33: #define ALLDROUTERS6   "ff02::6"
   34: 
   35: #define OSPF6_ROUTER_BIT_W     (1 << 3)
   36: #define OSPF6_ROUTER_BIT_V     (1 << 2)
   37: #define OSPF6_ROUTER_BIT_E     (1 << 1)
   38: #define OSPF6_ROUTER_BIT_B     (1 << 0)
   39: 
   40: /* OSPF options */
   41: /* present in HELLO, DD, LSA */
   42: #define OSPF6_OPT_SET(x,opt)   ((x)[2] |=  (opt))
   43: #define OSPF6_OPT_ISSET(x,opt) ((x)[2] &   (opt))
   44: #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
   45: #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
   46: 
   47: #define OSPF6_OPT_DC (1 << 5)   /* Demand Circuit handling Capability */
   48: #define OSPF6_OPT_R  (1 << 4)   /* Forwarding Capability (Any Protocol) */
   49: #define OSPF6_OPT_N  (1 << 3)   /* Handling Type-7 LSA Capability */
   50: #define OSPF6_OPT_MC (1 << 2)   /* Multicasting Capability */
   51: #define OSPF6_OPT_E  (1 << 1)   /* AS External Capability */
   52: #define OSPF6_OPT_V6 (1 << 0)   /* IPv6 forwarding Capability */
   53: 
   54: /* OSPF6 Prefix */
   55: #define OSPF6_PREFIX_MIN_SIZE                  4U /* .length == 0 */
   56: struct ospf6_prefix
   57: {
   58:   u_int8_t prefix_length;
   59:   u_int8_t prefix_options;
   60:   union {
   61:     u_int16_t _prefix_metric;
   62:     u_int16_t _prefix_referenced_lstype;
   63:   } u;
   64: #define prefix_metric        u._prefix_metric
   65: #define prefix_refer_lstype  u._prefix_referenced_lstype
   66:   /* followed by one address_prefix */
   67: };
   68: 
   69: #define OSPF6_PREFIX_OPTION_NU (1 << 0)  /* No Unicast */
   70: #define OSPF6_PREFIX_OPTION_LA (1 << 1)  /* Local Address */
   71: #define OSPF6_PREFIX_OPTION_MC (1 << 2)  /* MultiCast */
   72: #define OSPF6_PREFIX_OPTION_P  (1 << 3)  /* Propagate (NSSA) */
   73: 
   74: /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
   75: #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
   76: 
   77: /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
   78: #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
   79: 
   80: /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
   81: #define OSPF6_PREFIX_SIZE(x) \
   82:    (OSPF6_PREFIX_SPACE ((x)->prefix_length) + sizeof (struct ospf6_prefix))
   83: 
   84: /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
   85: #define OSPF6_PREFIX_NEXT(x) \
   86:    ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE (x)))
   87: 
   88: #define ospf6_prefix_in6_addr(in6, op)                         \
   89: do {                                                           \
   90:   memset (in6, 0, sizeof (struct in6_addr));                   \
   91:   memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix),  \
   92:           OSPF6_PREFIX_SPACE ((op)->prefix_length));           \
   93: } while (0)
   94: 
   95: extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
   96: extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
   97:                                            char *buf, int size);
   98: extern void ospf6_capability_printbuf (char capability, char *buf, int size);
   99: extern void ospf6_options_printbuf (u_char *options, char *buf, int size);
  100: 
  101: #endif /* OSPF6_PROTO_H */