ospfd/ospf_opaque.h

   1 /*
   2  * This is an implementation of rfc2370.
   3  * Copyright (C) 2001 KDD R&D Laboratories, Inc.
   4  * http://www.kddlabs.co.jp/
   5  *
   6  * This file is part of GNU Zebra.
   7  *
   8  * GNU Zebra is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * GNU Zebra is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  20  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  21  * 02111-1307, USA.
  22  */
  23
  24 #ifndef _ZEBRA_OSPF_OPAQUE_H
  25 #define _ZEBRA_OSPF_OPAQUE_H
  26
  27 #include "vty.h"
  28
  29 #define IS_OPAQUE_LSA(type) \
  30         ((type) == OSPF_OPAQUE_LINK_LSA  || \
  31          (type) == OSPF_OPAQUE_AREA_LSA  || \
  32          (type) == OSPF_OPAQUE_AS_LSA)
  33
  34 /*
  35  * Opaque LSA's link state ID is redefined as follows.
  36  *
  37  *        24       16        8        0
  38  * +--------+--------+--------+--------+
  39  * |tttttttt|........|........|........|
  40  * +--------+--------+--------+--------+
  41  * |<-Type->|<------- Opaque ID ------>|
  42  */
  43 #define LSID_OPAQUE_TYPE_MASK   0xff000000      /*  8 bits */
  44 #define LSID_OPAQUE_ID_MASK     0x00ffffff      /* 24 bits */
  45
  46 #define GET_OPAQUE_TYPE(lsid) \
  47         (((u_int32_t)(lsid) & LSID_OPAQUE_TYPE_MASK) >> 24)
  48
  49 #define GET_OPAQUE_ID(lsid) \
  50          ((u_int32_t)(lsid) & LSID_OPAQUE_ID_MASK)
  51
  52 #define SET_OPAQUE_LSID(type, id) \
  53         ((((type) << 24) & LSID_OPAQUE_TYPE_MASK) \
  54         | ((id)          & LSID_OPAQUE_ID_MASK))
  55
  56 /*
  57  * Opaque LSA types will be assigned by IANA.
  58  * <http://www.iana.org/assignments/ospf-opaque-types>
  59  */
  60 #define OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA             1
  61 #define OPAQUE_TYPE_SYCAMORE_OPTICAL_TOPOLOGY_DESC      2
  62 #define OPAQUE_TYPE_GRACE_LSA                           3
  63
  64 /* Followings types are proposed in internet-draft documents. */
  65 #define OPAQUE_TYPE_8021_QOSPF                          129
  66 #define OPAQUE_TYPE_SECONDARY_NEIGHBOR_DISCOVERY        224
  67 #define OPAQUE_TYPE_FLOODGATE                           225
  68
  69 /* Ugly hack to make use of an unallocated value for wildcard matching! */
  70 #define OPAQUE_TYPE_WILDCARD                            0
  71
  72 #define OPAQUE_TYPE_RANGE_UNASSIGNED(type) \
  73         (  4 <= (type) && (type) <= 127)
  74
  75 #define OPAQUE_TYPE_RANGE_RESERVED(type) \
  76         (127 <  (type) && (type) <= 255)
  77
  78 #define VALID_OPAQUE_INFO_LEN(lsahdr) \
  79         ((ntohs((lsahdr)->length) >= sizeof (struct lsa_header)) && \
  80         ((ntohs((lsahdr)->length) %  sizeof (u_int32_t)) == 0))
  81
  82 /* Prototypes. */
  83
  84 extern void ospf_opaque_init (void);
  85 extern void ospf_opaque_term (void);
  86 extern int ospf_opaque_type9_lsa_init (struct ospf_interface *oi);
  87 extern void ospf_opaque_type9_lsa_term (struct ospf_interface *oi);
  88 extern int ospf_opaque_type10_lsa_init (struct ospf_area *area);
  89 extern void ospf_opaque_type10_lsa_term (struct ospf_area *area);
  90 extern int ospf_opaque_type11_lsa_init (struct ospf *ospf);
  91 extern void ospf_opaque_type11_lsa_term (struct ospf *ospf);
  92
  93 extern int
  94 ospf_register_opaque_functab (
  95   u_char lsa_type,
  96   u_char opaque_type,
  97   int (* new_if_hook)(struct interface *ifp),
  98   int (* del_if_hook)(struct interface *ifp),
  99   void (* ism_change_hook)(struct ospf_interface *oi, int old_status),
 100   void (* nsm_change_hook)(struct ospf_neighbor *nbr, int old_status),
 101   void (* config_write_router)(struct vty *vty),
 102   void (* config_write_if    )(struct vty *vty, struct interface *ifp),
 103   void (* config_write_debug )(struct vty *vty),
 104   void (* show_opaque_info   )(struct vty *vty, struct ospf_lsa *lsa),
 105   int  (* lsa_originator)(void *arg),
 106   struct ospf_lsa *(* lsa_refresher )(struct ospf_lsa *lsa),
 107   int (* new_lsa_hook)(struct ospf_lsa *lsa),
 108   int (* del_lsa_hook)(struct ospf_lsa *lsa)
 109 );
 110 extern void ospf_delete_opaque_functab (u_char lsa_type, u_char opaque_type);
 111
 112 extern int ospf_opaque_new_if (struct interface *ifp);
 113 extern int ospf_opaque_del_if (struct interface *ifp);
 114 extern void ospf_opaque_ism_change (struct ospf_interface *oi,
 115                                     int old_status);
 116 extern void ospf_opaque_nsm_change (struct ospf_neighbor *nbr,
 117                                     int old_status);
 118 extern void ospf_opaque_config_write_router (struct vty *vty, struct ospf *);
 119 extern void ospf_opaque_config_write_if (struct vty *vty,
 120                                          struct interface *ifp);
 121 extern void ospf_opaque_config_write_debug (struct vty *vty);
 122 extern void show_opaque_info_detail (struct vty *vty, struct ospf_lsa *lsa);
 123 extern void ospf_opaque_lsa_dump (struct stream *s, u_int16_t length);
 124
 125 extern void ospf_opaque_lsa_originate_schedule (struct ospf_interface *oi,
 126                                                 int *init_delay);
 127 extern struct ospf_lsa *ospf_opaque_lsa_install (struct ospf_lsa *,
 128                                                  int rt_recalc);
 129 extern struct ospf_lsa *ospf_opaque_lsa_refresh (struct ospf_lsa *lsa);
 130
 131 extern void ospf_opaque_lsa_reoriginate_schedule (void *lsa_type_dependent,
 132                                                   u_char lsa_type,
 133                                                   u_char opaque_type);
 134 extern void ospf_opaque_lsa_refresh_schedule (struct ospf_lsa *lsa);
 135 extern void ospf_opaque_lsa_flush_schedule (struct ospf_lsa *lsa);
 136
 137 extern void ospf_opaque_self_originated_lsa_received (struct ospf_neighbor
 138                                                       *nbr,
 139                                                       struct ospf_lsa *lsa);
 140 extern void htonf (float *src, float *dst);
 141 extern void ntohf (float *src, float *dst);
 142 extern struct ospf *oi_to_top (struct ospf_interface *oi);
 143
 144 #endif /* _ZEBRA_OSPF_OPAQUE_H */