zebra/zebra_ptm_redistribute.c

   1 /**
   2  * @copyright Copyright (C) 2015 Cumulus Networks, Inc.
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  18  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21
  22 #include <zebra.h>
  23 #include "prefix.h"
  24 #include "vty.h"
  25 #include "stream.h"
  26 #include "zebra/zserv.h"
  27 #include "zebra/zebra_ptm_redistribute.h"
  28
  29 /* master zebra server structure */
  30 extern struct zebra_t zebrad;
  31
  32 static int
  33 zsend_interface_bfd_update (int cmd, struct zserv *client,
  34                             struct interface *ifp, struct prefix *dp,
  35                             struct prefix *sp)
  36 {
  37   int blen;
  38   struct stream *s;
  39
  40   /* Check this client need interface information. */
  41   if (! client->ifinfo)
  42     return 0;
  43
  44   s = client->obuf;
  45   stream_reset (s);
  46
  47   zserv_create_header (s, cmd);
  48   if (ifp)
  49     stream_putl (s, ifp->ifindex);
  50   else
  51     stream_putl (s, 0);
  52
  53   /* BFD destination prefix information. */
  54   stream_putc (s, dp->family);
  55   blen = prefix_blen (dp);
  56   stream_put (s, &dp->u.prefix, blen);
  57   stream_putc (s, dp->prefixlen);
  58
  59   /* BFD source prefix information. */
  60   stream_putc (s, sp->family);
  61   blen = prefix_blen (sp);
  62   stream_put (s, &sp->u.prefix, blen);
  63   stream_putc (s, sp->prefixlen);
  64
  65   /* Write packet size. */
  66   stream_putw_at (s, 0, stream_get_endp (s));
  67
  68   client->if_bfd_cnt++;
  69   return zebra_server_send_message(client);
  70 }
  71
  72 void
  73 zebra_interface_bfd_update (struct interface *ifp, struct prefix *dp,
  74                             struct prefix *sp)
  75 {
  76   struct listnode *node, *nnode;
  77   struct zserv *client;
  78
  79   for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
  80     {
  81       /* Supporting for OSPF and BGP */
  82       if (client->proto != ZEBRA_ROUTE_OSPF && client->proto != ZEBRA_ROUTE_BGP
  83           && client->proto != ZEBRA_ROUTE_OSPF6)
  84         continue;
  85
  86       /* Notify to the protocol daemons. */
  87       zsend_interface_bfd_update (ZEBRA_INTERFACE_BFD_DEST_DOWN, client, ifp,
  88                                     dp, sp);
  89     }
  90 }
  91
  92 static int
  93 zsend_bfd_peer_replay (int cmd, struct zserv *client)
  94 {
  95   struct stream *s;
  96
  97   s = client->obuf;
  98   stream_reset (s);
  99
 100   zserv_create_header (s, cmd);
 101
 102   /* Write packet size. */
 103   stream_putw_at (s, 0, stream_get_endp (s));
 104
 105   client->bfd_peer_replay_cnt++;
 106   return zebra_server_send_message(client);
 107 }
 108
 109 void
 110 zebra_bfd_peer_replay_req (void)
 111 {
 112   struct listnode *node, *nnode;
 113   struct zserv *client;
 114
 115   for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
 116     {
 117       /* Supporting for BGP */
 118       if ((client->proto != ZEBRA_ROUTE_BGP) &&
 119           (client->proto != ZEBRA_ROUTE_OSPF) &&
 120           (client->proto != ZEBRA_ROUTE_OSPF6))
 121         continue;
 122
 123       /* Notify to the protocol daemons. */
 124       zsend_bfd_peer_replay (ZEBRA_BFD_DEST_REPLAY, client);
 125     }
 126 }