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/zserv.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         /* Check this client need interface information. */
  40         if (!client->ifinfo)
  41                 return 0;
  42
  43         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  44
  45         zclient_create_header(s, cmd, vrf_id);
  46         if (ifp)
  47                 stream_putl(s, ifp->ifindex);
  48         else
  49                 stream_putl(s, 0);
  50
  51         /* BFD destination prefix information. */
  52         stream_putc(s, dp->family);
  53         blen = prefix_blen(dp);
  54         stream_put(s, &dp->u.prefix, blen);
  55         stream_putc(s, dp->prefixlen);
  56
  57         /* BFD status */
  58         stream_putl(s, status);
  59
  60         /* BFD source prefix information. */
  61         stream_putc(s, sp->family);
  62         blen = prefix_blen(sp);
  63         stream_put(s, &sp->u.prefix, blen);
  64         stream_putc(s, sp->prefixlen);
  65
  66         /* Write packet size. */
  67         stream_putw_at(s, 0, stream_get_endp(s));
  68
  69         client->if_bfd_cnt++;
  70         return zserv_send_message(client, s);
  71 }
  72
  73 void zebra_interface_bfd_update(struct interface *ifp, struct prefix *dp,
  74                                 struct prefix *sp, int status, vrf_id_t vrf_id)
  75 {
  76         struct listnode *node, *nnode;
  77         struct zserv *client;
  78
  79         for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) {
  80                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
  81                         continue;
  82
  83                 /* Notify to the protocol daemons. */
  84                 zsend_interface_bfd_update(ZEBRA_INTERFACE_BFD_DEST_UPDATE,
  85                                            client, ifp, dp, sp, status, vrf_id);
  86         }
  87 }
  88
  89 static int zsend_bfd_peer_replay(int cmd, struct zserv *client)
  90 {
  91         struct stream *s;
  92
  93         s = stream_new(ZEBRA_MAX_PACKET_SIZ);
  94
  95         zclient_create_header(s, cmd, VRF_DEFAULT);
  96
  97         /* Write packet size. */
  98         stream_putw_at(s, 0, stream_get_endp(s));
  99
 100         client->bfd_peer_replay_cnt++;
 101         return zserv_send_message(client, s);
 102 }
 103
 104 void zebra_bfd_peer_replay_req(void)
 105 {
 106         struct listnode *node, *nnode;
 107         struct zserv *client;
 108
 109         for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) {
 110                 if (!IS_BFD_ENABLED_PROTOCOL(client->proto))
 111                         continue;
 112
 113                 /* Notify to the protocol daemons. */
 114                 zsend_bfd_peer_replay(ZEBRA_BFD_DEST_REPLAY, client);
 115         }
 116 }