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Annotation of embedaddon/quagga/ospf6d/ospf6_proto.h, revision 1.1.1.1

1.1       misho       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: /* OSPF protocol number. */
                     30: #ifndef IPPROTO_OSPFIGP
                     31: #define IPPROTO_OSPFIGP         89
                     32: #endif
                     33: 
                     34: /* TOS field normaly null */
                     35: #define DEFAULT_TOS_VALUE      0x0
                     36: 
                     37: /* Architectural Constants */
                     38: #define LS_REFRESH_TIME                1800  /* 30 min */
                     39: #define MIN_LS_INTERVAL                   5
                     40: #define MIN_LS_ARRIVAL                    1
                     41: #define MAXAGE                         3600  /* 1 hour */
                     42: #define CHECK_AGE                       300  /* 5 min */
                     43: #define MAX_AGE_DIFF                    900  /* 15 min */
                     44: #define LS_INFINITY                0xffffff  /* 24-bit binary value */
                     45: #define INITIAL_SEQUENCE_NUMBER  0x80000001  /* signed 32-bit integer */
                     46: #define MAX_SEQUENCE_NUMBER      0x7fffffff  /* signed 32-bit integer */
                     47: 
                     48: #define ALLSPFROUTERS6 "ff02::5"
                     49: #define ALLDROUTERS6   "ff02::6"
                     50: 
                     51: /* Configurable Constants */
                     52: 
                     53: #define DEFAULT_HELLO_INTERVAL       10
                     54: #define DEFAULT_ROUTER_DEAD_INTERVAL 40
                     55: 
                     56: #define OSPF6_ROUTER_BIT_W     (1 << 3)
                     57: #define OSPF6_ROUTER_BIT_V     (1 << 2)
                     58: #define OSPF6_ROUTER_BIT_E     (1 << 1)
                     59: #define OSPF6_ROUTER_BIT_B     (1 << 0)
                     60: 
                     61: /* OSPF options */
                     62: /* present in HELLO, DD, LSA */
                     63: #define OSPF6_OPT_SET(x,opt)   ((x)[2] |=  (opt))
                     64: #define OSPF6_OPT_ISSET(x,opt) ((x)[2] &   (opt))
                     65: #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
                     66: #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
                     67: 
                     68: #define OSPF6_OPT_DC (1 << 5)   /* Demand Circuit handling Capability */
                     69: #define OSPF6_OPT_R  (1 << 4)   /* Forwarding Capability (Any Protocol) */
                     70: #define OSPF6_OPT_N  (1 << 3)   /* Handling Type-7 LSA Capability */
                     71: #define OSPF6_OPT_MC (1 << 2)   /* Multicasting Capability */
                     72: #define OSPF6_OPT_E  (1 << 1)   /* AS External Capability */
                     73: #define OSPF6_OPT_V6 (1 << 0)   /* IPv6 forwarding Capability */
                     74: 
                     75: /* OSPF6 Prefix */
                     76: #define OSPF6_PREFIX_MIN_SIZE                  4U /* .length == 0 */
                     77: struct ospf6_prefix
                     78: {
                     79:   u_int8_t prefix_length;
                     80:   u_int8_t prefix_options;
                     81:   union {
                     82:     u_int16_t _prefix_metric;
                     83:     u_int16_t _prefix_referenced_lstype;
                     84:   } u;
                     85: #define prefix_metric        u._prefix_metric
                     86: #define prefix_refer_lstype  u._prefix_referenced_lstype
                     87:   /* followed by one address_prefix */
                     88: };
                     89: 
                     90: #define OSPF6_PREFIX_OPTION_NU (1 << 0)  /* No Unicast */
                     91: #define OSPF6_PREFIX_OPTION_LA (1 << 1)  /* Local Address */
                     92: #define OSPF6_PREFIX_OPTION_MC (1 << 2)  /* MultiCast */
                     93: #define OSPF6_PREFIX_OPTION_P  (1 << 3)  /* Propagate (NSSA) */
                     94: 
                     95: /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
                     96: #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
                     97: 
                     98: /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
                     99: #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
                    100: 
                    101: /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
                    102: #define OSPF6_PREFIX_SIZE(x) \
                    103:    (OSPF6_PREFIX_SPACE ((x)->prefix_length) + sizeof (struct ospf6_prefix))
                    104: 
                    105: /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
                    106: #define OSPF6_PREFIX_NEXT(x) \
                    107:    ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE (x)))
                    108: 
                    109: #define ospf6_prefix_in6_addr(in6, op)                         \
                    110: do {                                                           \
                    111:   memset (in6, 0, sizeof (struct in6_addr));                   \
                    112:   memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix),  \
                    113:           OSPF6_PREFIX_SPACE ((op)->prefix_length));           \
                    114: } while (0)
                    115: 
                    116: extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
                    117: extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
                    118:                                            char *buf, int size);
                    119: extern void ospf6_capability_printbuf (char capability, char *buf, int size);
                    120: extern void ospf6_options_printbuf (u_char *options, char *buf, int size);
                    121: 
                    122: #endif /* OSPF6_PROTO_H */