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 #include "zebra/zebra_memory.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         /* Check this client need interface information. */
  39         if (!client->ifinfo)
  40                 return 0;
  41
  42         s = client->obuf;
  43         stream_reset(s);
  44
  45         zserv_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 zebra_server_send_message(client);
  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                 /* Supporting for OSPF and BGP */
  81                 if (client->proto != ZEBRA_ROUTE_OSPF
  82                     && 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_UPDATE,
  88                                            client, ifp, dp, sp, status, vrf_id);
  89         }
  90 }
  91
  92 static int zsend_bfd_peer_replay(int cmd, struct zserv *client)
  93 {
  94         struct stream *s;
  95
  96         s = client->obuf;
  97         stream_reset(s);
  98
  99         zserv_create_header(
 100                 s, cmd, VRF_DEFAULT); // Pending: adjust when multi-vrf bfd work
 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 zebra_bfd_peer_replay_req(void)
 110 {
 111         struct listnode *node, *nnode;
 112         struct zserv *client;
 113
 114         for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) {
 115                 /* Supporting for BGP */
 116                 if ((client->proto != ZEBRA_ROUTE_BGP)
 117                     && (client->proto != ZEBRA_ROUTE_OSPF)
 118                     && (client->proto != ZEBRA_ROUTE_OSPF6))
 119                         continue;
 120
 121                 /* Notify to the protocol daemons. */
 122                 zsend_bfd_peer_replay(ZEBRA_BFD_DEST_REPLAY, client);
 123         }
 124 }