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/zebra_ptm_redistribute.h"
  27 #include "zebra/zebra_memory.h"
  28
  29 static int zsend_interface_bfd_update(int cmd, struct zserv *client,
  30                                       struct interface *ifp, struct prefix *dp,
  31                                       struct prefix *sp, int status,
  32                                       vrf_id_t vrf_id)
  33 {
  34         int blen;
  35         struct stream *s;
  36
  37         /* Check this client need interface information. */
  38         if (!client->ifinfo)
  39                 return 0;
  40
  41         s = client->obuf;
  42         stream_reset(s);
  43
  44         zclient_create_header(s, cmd, vrf_id);
  45         if (ifp)
  46                 stream_putl(s, ifp->ifindex);
  47         else
  48                 stream_putl(s, 0);
  49
  50         /* BFD destination prefix information. */
  51         stream_putc(s, dp->family);
  52         blen = prefix_blen(dp);
  53         stream_put(s, &dp->u.prefix, blen);
  54         stream_putc(s, dp->prefixlen);
  55
  56         /* BFD status */
  57         stream_putl(s, status);
  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 zebra_interface_bfd_update(struct interface *ifp, struct prefix *dp,
  73                                 struct prefix *sp, int status, vrf_id_t vrf_id)
  74 {
  75         struct listnode *node, *nnode;
  76         struct zserv *client;
  77
  78         for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) {
  79                 /* Supporting for OSPF, BGP and PIM */
  80                 if (client->proto != ZEBRA_ROUTE_OSPF
  81                     && client->proto != ZEBRA_ROUTE_BGP
  82                     && client->proto != ZEBRA_ROUTE_OSPF6
  83                     && client->proto != ZEBRA_ROUTE_PIM)
  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         zclient_create_header(s, cmd, VRF_DEFAULT);
 100
 101         /* Write packet size. */
 102         stream_putw_at(s, 0, stream_get_endp(s));
 103
 104         client->bfd_peer_replay_cnt++;
 105         return zebra_server_send_message(client);
 106 }
 107
 108 void zebra_bfd_peer_replay_req(void)
 109 {
 110         struct listnode *node, *nnode;
 111         struct zserv *client;
 112
 113         for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) {
 114                 /* Supporting for BGP */
 115                 if ((client->proto != ZEBRA_ROUTE_BGP)
 116                     && (client->proto != ZEBRA_ROUTE_OSPF)
 117                     && (client->proto != ZEBRA_ROUTE_OSPF6)
 118                     && (client->proto != ZEBRA_ROUTE_PIM))
 119                         continue;
 120
 121                 /* Notify to the protocol daemons. */
 122                 zsend_bfd_peer_replay(ZEBRA_BFD_DEST_REPLAY, client);
 123         }
 124 }