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
  30 static int zsend_interface_bfd_update(int cmd, struct zserv *client,
  31                                       struct interface *ifp, struct prefix *dp,
  32                                       struct prefix *sp, int status,
  33                                       vrf_id_t vrf_id)
  34 {
  35         int blen;
  36         struct stream *s;
  37
  38         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  39
  40         zclient_create_header(s, cmd, vrf_id);
  41         if (ifp)
  42                 stream_putl(s, ifp->ifindex);
  43         else
  44                 stream_putl(s, 0);
  45
  46         /* BFD destination prefix information. */
  47         stream_putc(s, dp->family);
  48         blen = prefix_blen(dp);
  49         stream_put(s, &dp->u.prefix, blen);
  50         stream_putc(s, dp->prefixlen);
  51
  52         /* BFD status */
  53         stream_putl(s, status);
  54
  55         /* BFD source prefix information. */
  56         stream_putc(s, sp->family);
  57         blen = prefix_blen(sp);
  58         stream_put(s, &sp->u.prefix, blen);
  59         stream_putc(s, sp->prefixlen);
  60
  61         /* c-bit bullshit */
  62         stream_putc(s, 0);
  63
  64         /* Write packet size. */
  65         stream_putw_at(s, 0, stream_get_endp(s));
  66
  67         client->if_bfd_cnt++;
  68         return zserv_send_message(client, s);
  69 }
  70
  71 void zebra_interface_bfd_update(struct interface *ifp, struct prefix *dp,
  72                                 struct prefix *sp, int status, vrf_id_t vrf_id)
  73 {
  74         struct listnode *node, *nnode;
  75         struct zserv *client;
  76
  77         for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
  78                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
  79                         continue;
  80
  81                 /* Notify to the protocol daemons. */
  82                 zsend_interface_bfd_update(ZEBRA_INTERFACE_BFD_DEST_UPDATE,
  83                                            client, ifp, dp, sp, status, vrf_id);
  84         }
  85 }
  86
  87 static int zsend_bfd_peer_replay(int cmd, struct zserv *client)
  88 {
  89         struct stream *s;
  90
  91         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  92
  93         zclient_create_header(s, cmd, VRF_DEFAULT);
  94
  95         /* Write packet size. */
  96         stream_putw_at(s, 0, stream_get_endp(s));
  97
  98         client->bfd_peer_replay_cnt++;
  99         return zserv_send_message(client, s);
 100 }
 101
 102 void zebra_bfd_peer_replay_req(void)
 103 {
 104         struct listnode *node, *nnode;
 105         struct zserv *client;
 106
 107         for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
 108                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
 109                         continue;
 110
 111                 /* Notify to the protocol daemons. */
 112                 zsend_bfd_peer_replay(ZEBRA_BFD_DEST_REPLAY, client);
 113         }
 114 }