ospfd/ospf_apiserver.h

   1 /*
   2  * Server side of OSPF API.
   3  * Copyright (C) 2001, 2002 Ralph Keller
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation; either version 2, or (at your
  10  * option) any 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 _OSPF_APISERVER_H
  24 #define _OSPF_APISERVER_H
  25
  26 /* MTYPE definition is not reflected to "memory.h". */
  27 #define MTYPE_OSPF_APISERVER MTYPE_TMP
  28 #define MTYPE_OSPF_APISERVER_MSGFILTER MTYPE_TMP
  29
  30 /* List of opaque types that application registered */
  31 struct registered_opaque_type
  32 {
  33   u_char lsa_type;
  34   u_char opaque_type;
  35 };
  36
  37
  38 /* Server instance for each accepted client connection. */
  39 struct ospf_apiserver
  40 {
  41   /* Socket connections for synchronous commands and asynchronous
  42      notifications */
  43   int fd_sync;                  /* synchronous requests */
  44   struct sockaddr_in peer_sync;
  45
  46   int fd_async;                 /* asynchronous notifications */
  47   struct sockaddr_in peer_async;
  48
  49   /* List of all opaque types that application registers to use. Using
  50      a single connection with the OSPF daemon, multiple
  51      <lsa,opaque_type> pairs can be registered. However, each
  52      combination can only be registered once by all applications. */
  53   struct list *opaque_types;            /* of type registered_opaque_type */
  54
  55   /* Temporary storage for LSA instances to be refreshed. */
  56   struct ospf_lsdb reserve;
  57
  58   /* filter for LSA update/delete notifies */
  59   struct lsa_filter_type *filter;
  60
  61   /* Fifo buffers for outgoing messages */
  62   struct msg_fifo *out_sync_fifo;
  63   struct msg_fifo *out_async_fifo;
  64
  65   /* Read and write threads */
  66   struct thread *t_sync_read;
  67 #ifdef USE_ASYNC_READ
  68   struct thread *t_async_read;
  69 #endif /* USE_ASYNC_READ */
  70   struct thread *t_sync_write;
  71   struct thread *t_async_write;
  72 };
  73
  74 enum event
  75 {
  76   OSPF_APISERVER_ACCEPT,
  77   OSPF_APISERVER_SYNC_READ,
  78 #ifdef USE_ASYNC_READ
  79   OSPF_APISERVER_ASYNC_READ,
  80 #endif /* USE_ASYNC_READ */
  81   OSPF_APISERVER_SYNC_WRITE,
  82   OSPF_APISERVER_ASYNC_WRITE
  83 };
  84
  85 /* -----------------------------------------------------------
  86  * Followings are functions to manage client connections.
  87  * -----------------------------------------------------------
  88  */
  89
  90 extern unsigned short ospf_apiserver_getport (void);
  91 extern int ospf_apiserver_init (void);
  92 extern void ospf_apiserver_term (void);
  93 extern struct ospf_apiserver *ospf_apiserver_new (int fd_sync, int fd_async);
  94 extern void ospf_apiserver_free (struct ospf_apiserver *apiserv);
  95 extern void ospf_apiserver_event (enum event event, int fd,
  96                            struct ospf_apiserver *apiserv);
  97 extern int ospf_apiserver_serv_sock_family (unsigned short port, int family);
  98 extern int ospf_apiserver_accept (struct thread *thread);
  99 extern int ospf_apiserver_read (struct thread *thread);
 100 extern int ospf_apiserver_sync_write (struct thread *thread);
 101 extern int ospf_apiserver_async_write (struct thread *thread);
 102 extern int ospf_apiserver_send_reply (struct ospf_apiserver *apiserv,
 103                                u_int32_t seqnr, u_char rc);
 104
 105 /* -----------------------------------------------------------
 106  * Followings are message handler functions
 107  * -----------------------------------------------------------
 108  */
 109
 110 extern int ospf_apiserver_lsa9_originator (void *arg);
 111 extern int ospf_apiserver_lsa10_originator (void *arg);
 112 extern int ospf_apiserver_lsa11_originator (void *arg);
 113
 114 extern void ospf_apiserver_clients_notify_all (struct msg *msg);
 115
 116 extern void ospf_apiserver_clients_notify_ready_type9 (struct ospf_interface *oi);
 117 extern void ospf_apiserver_clients_notify_ready_type10 (struct ospf_area *area);
 118 extern void ospf_apiserver_clients_notify_ready_type11 (struct ospf *top);
 119
 120 extern void ospf_apiserver_clients_notify_new_if (struct ospf_interface *oi);
 121 extern void ospf_apiserver_clients_notify_del_if (struct ospf_interface *oi);
 122 extern void ospf_apiserver_clients_notify_ism_change (struct ospf_interface *oi);
 123 extern void ospf_apiserver_clients_notify_nsm_change (struct ospf_neighbor *nbr);
 124
 125 extern int ospf_apiserver_is_ready_type9 (struct ospf_interface *oi);
 126 extern int ospf_apiserver_is_ready_type10 (struct ospf_area *area);
 127 extern int ospf_apiserver_is_ready_type11 (struct ospf *ospf);
 128
 129 extern void ospf_apiserver_notify_ready_type9 (struct ospf_apiserver *apiserv);
 130 extern void ospf_apiserver_notify_ready_type10 (struct ospf_apiserver *apiserv);
 131 extern void ospf_apiserver_notify_ready_type11 (struct ospf_apiserver *apiserv);
 132
 133 extern int ospf_apiserver_handle_msg (struct ospf_apiserver *apiserv,
 134                                struct msg *msg);
 135 extern int ospf_apiserver_handle_register_opaque_type (struct ospf_apiserver
 136                                                 *apiserv, struct msg *msg);
 137 extern int ospf_apiserver_handle_unregister_opaque_type (struct ospf_apiserver
 138                                                   *apiserv, struct msg *msg);
 139 extern int ospf_apiserver_handle_register_event (struct ospf_apiserver *apiserv,
 140                                           struct msg *msg);
 141 extern int ospf_apiserver_handle_originate_request (struct ospf_apiserver *apiserv,
 142                                              struct msg *msg);
 143 extern int ospf_apiserver_handle_delete_request (struct ospf_apiserver *apiserv,
 144                                           struct msg *msg);
 145 extern int ospf_apiserver_handle_sync_lsdb (struct ospf_apiserver *apiserv,
 146                                      struct msg *msg);
 147
 148
 149 /* -----------------------------------------------------------
 150  * Followings are functions for LSA origination/deletion
 151  * -----------------------------------------------------------
 152  */
 153
 154 extern int ospf_apiserver_register_opaque_type (struct ospf_apiserver *apiserver,
 155                                          u_char lsa_type, u_char opaque_type);
 156 extern int ospf_apiserver_unregister_opaque_type (struct ospf_apiserver *apiserver,
 157                                            u_char lsa_type,
 158                                            u_char opaque_type);
 159 extern struct ospf_lsa *ospf_apiserver_opaque_lsa_new (struct ospf_area *area,
 160                                                 struct ospf_interface *oi,
 161                                                 struct lsa_header *protolsa);
 162 extern struct ospf_interface *ospf_apiserver_if_lookup_by_addr (struct in_addr
 163                                                          address);
 164 extern struct ospf_interface *ospf_apiserver_if_lookup_by_ifp (struct interface
 165                                                         *ifp);
 166 extern int ospf_apiserver_originate1 (struct ospf_lsa *lsa);
 167 extern void ospf_apiserver_flood_opaque_lsa (struct ospf_lsa *lsa);
 168
 169
 170 /* -----------------------------------------------------------
 171  * Followings are callback functions to handle opaque types
 172  * -----------------------------------------------------------
 173  */
 174
 175 extern int ospf_apiserver_new_if (struct interface *ifp);
 176 extern int ospf_apiserver_del_if (struct interface *ifp);
 177 extern void ospf_apiserver_ism_change (struct ospf_interface *oi, int old_status);
 178 extern void ospf_apiserver_nsm_change (struct ospf_neighbor *nbr, int old_status);
 179 extern void ospf_apiserver_config_write_router (struct vty *vty);
 180 extern void ospf_apiserver_config_write_if (struct vty *vty, struct interface *ifp);
 181 extern void ospf_apiserver_show_info (struct vty *vty, struct ospf_lsa *lsa);
 182 extern int ospf_ospf_apiserver_lsa_originator (void *arg);
 183 extern void ospf_apiserver_lsa_refresher (struct ospf_lsa *lsa);
 184 extern void ospf_apiserver_flush_opaque_lsa (struct ospf_apiserver *apiserv,
 185                                       u_char lsa_type, u_char opaque_type);
 186
 187 /* -----------------------------------------------------------
 188  * Followings are hooks when LSAs are updated or deleted
 189  * -----------------------------------------------------------
 190  */
 191
 192
 193 /* Hooks that are invoked from ospf opaque module */
 194
 195 extern int ospf_apiserver_lsa_update (struct ospf_lsa *lsa);
 196 extern int ospf_apiserver_lsa_delete (struct ospf_lsa *lsa);
 197
 198 extern void ospf_apiserver_clients_lsa_change_notify (u_char msgtype,
 199                                                struct ospf_lsa *lsa);
 200
 201 #endif /* _OSPF_APISERVER_H */