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 along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22 #include "prefix.h"
  23 #include "vty.h"
  24 #include "stream.h"
  25 #include "zebra/zebra_router.h"
  26 #include "zebra/zapi_msg.h"
  27 #include "zebra/zebra_ptm.h"
  28 #include "zebra/zebra_ptm_redistribute.h"
  29 #include "zebra/zebra_memory.h"
  30
  31 static int zsend_interface_bfd_update(int cmd, struct zserv *client,
  32                                       struct interface *ifp, struct prefix *dp,
  33                                       struct prefix *sp, int status,
  34                                       vrf_id_t vrf_id)
  35 {
  36         int blen;
  37         struct stream *s;
  38
  39         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  40
  41         zclient_create_header(s, cmd, vrf_id);
  42         if (ifp)
  43                 stream_putl(s, ifp->ifindex);
  44         else
  45                 stream_putl(s, 0);
  46
  47         /* BFD destination prefix information. */
  48         stream_putc(s, dp->family);
  49         blen = prefix_blen(dp);
  50         stream_put(s, &dp->u.prefix, blen);
  51         stream_putc(s, dp->prefixlen);
  52
  53         /* BFD status */
  54         stream_putl(s, status);
  55
  56         /* BFD source prefix information. */
  57         stream_putc(s, sp->family);
  58         blen = prefix_blen(sp);
  59         stream_put(s, &sp->u.prefix, blen);
  60         stream_putc(s, sp->prefixlen);
  61
  62         /* Write packet size. */
  63         stream_putw_at(s, 0, stream_get_endp(s));
  64
  65         client->if_bfd_cnt++;
  66         return zserv_send_message(client, s);
  67 }
  68
  69 void zebra_interface_bfd_update(struct interface *ifp, struct prefix *dp,
  70                                 struct prefix *sp, int status, vrf_id_t vrf_id)
  71 {
  72         struct listnode *node, *nnode;
  73         struct zserv *client;
  74
  75         for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
  76                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
  77                         continue;
  78
  79                 /* Notify to the protocol daemons. */
  80                 zsend_interface_bfd_update(ZEBRA_INTERFACE_BFD_DEST_UPDATE,
  81                                            client, ifp, dp, sp, status, vrf_id);
  82         }
  83 }
  84
  85 static int zsend_bfd_peer_replay(int cmd, struct zserv *client)
  86 {
  87         struct stream *s;
  88
  89         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  90
  91         zclient_create_header(s, cmd, VRF_DEFAULT);
  92
  93         /* Write packet size. */
  94         stream_putw_at(s, 0, stream_get_endp(s));
  95
  96         client->bfd_peer_replay_cnt++;
  97         return zserv_send_message(client, s);
  98 }
  99
 100 void zebra_bfd_peer_replay_req(void)
 101 {
 102         struct listnode *node, *nnode;
 103         struct zserv *client;
 104
 105         for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
 106                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
 107                         continue;
 108
 109                 /* Notify to the protocol daemons. */
 110                 zsend_bfd_peer_replay(ZEBRA_BFD_DEST_REPLAY, client);
 111         }
 112 }