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c43ed2e4
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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 *
896014f4
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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
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19 */
20
21#include <zebra.h>
22#include "prefix.h"
23#include "vty.h"
24#include "stream.h"
25#include "zebra/zserv.h"
88177fe3 26#include "zebra/zebra_ptm_redistribute.h"
4a1ab8e4 27#include "zebra/zebra_memory.h"
c43ed2e4 28
d62a17ae 29static 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)
c43ed2e4 33{
d62a17ae 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
7cf15b25 44 zclient_create_header(s, cmd, vrf_id);
d62a17ae 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);
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70}
71
d62a17ae 72void zebra_interface_bfd_update(struct interface *ifp, struct prefix *dp,
73 struct prefix *sp, int status, vrf_id_t vrf_id)
c43ed2e4 74{
d62a17ae 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 }
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90}
91
d62a17ae 92static int zsend_bfd_peer_replay(int cmd, struct zserv *client)
c43ed2e4 93{
d62a17ae 94 struct stream *s;
c43ed2e4 95
d62a17ae 96 s = client->obuf;
97 stream_reset(s);
c43ed2e4 98
7cf15b25 99 zclient_create_header(s, cmd, VRF_DEFAULT);
c43ed2e4 100
d62a17ae 101 /* Write packet size. */
102 stream_putw_at(s, 0, stream_get_endp(s));
c43ed2e4 103
d62a17ae 104 client->bfd_peer_replay_cnt++;
105 return zebra_server_send_message(client);
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106}
107
d62a17ae 108void zebra_bfd_peer_replay_req(void)
c43ed2e4 109{
d62a17ae 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 }
c43ed2e4 124}